aboutsummaryrefslogtreecommitdiffstats
path: root/erts
diff options
context:
space:
mode:
Diffstat (limited to 'erts')
-rw-r--r--erts/configure.in49
-rw-r--r--erts/doc/src/absform.xml923
-rw-r--r--erts/doc/src/driver_entry.xml9
-rw-r--r--erts/doc/src/erl.xml10
-rw-r--r--erts/doc/src/erl_driver.xml47
-rw-r--r--erts/doc/src/erl_prim_loader.xml42
-rw-r--r--erts/doc/src/erlang.xml94
-rw-r--r--erts/doc/src/init.xml5
-rw-r--r--erts/doc/src/notes.xml164
-rw-r--r--erts/emulator/Makefile.in14
-rw-r--r--erts/emulator/beam/atom.c3
-rw-r--r--erts/emulator/beam/atom.h1
-rw-r--r--erts/emulator/beam/atom.names6
-rw-r--r--erts/emulator/beam/beam_bif_load.c12
-rw-r--r--erts/emulator/beam/beam_emu.c24
-rw-r--r--erts/emulator/beam/beam_load.c47
-rw-r--r--erts/emulator/beam/bif.c30
-rw-r--r--erts/emulator/beam/bif.tab4
-rw-r--r--erts/emulator/beam/dist.c17
-rw-r--r--erts/emulator/beam/erl_alloc.c2
-rw-r--r--erts/emulator/beam/erl_bif_info.c37
-rw-r--r--erts/emulator/beam/erl_bif_port.c54
-rw-r--r--erts/emulator/beam/erl_driver.h9
-rw-r--r--erts/emulator/beam/erl_fun.c3
-rw-r--r--erts/emulator/beam/erl_gc.c266
-rw-r--r--erts/emulator/beam/erl_init.c22
-rw-r--r--erts/emulator/beam/erl_lock_check.c3
-rw-r--r--erts/emulator/beam/erl_map.c96
-rw-r--r--erts/emulator/beam/erl_map.h13
-rw-r--r--erts/emulator/beam/erl_message.c198
-rw-r--r--erts/emulator/beam/erl_message.h6
-rw-r--r--erts/emulator/beam/erl_node_tables.c15
-rw-r--r--erts/emulator/beam/erl_node_tables.h1
-rw-r--r--erts/emulator/beam/erl_port.h12
-rw-r--r--erts/emulator/beam/erl_process.c64
-rw-r--r--erts/emulator/beam/erl_process.h40
-rw-r--r--erts/emulator/beam/erl_process_dict.c66
-rw-r--r--erts/emulator/beam/erl_process_dict.h1
-rw-r--r--erts/emulator/beam/export.c3
-rw-r--r--erts/emulator/beam/global.h1
-rw-r--r--erts/emulator/beam/hash.c142
-rw-r--r--erts/emulator/beam/hash.h31
-rw-r--r--erts/emulator/beam/index.h4
-rw-r--r--erts/emulator/beam/io.c158
-rw-r--r--erts/emulator/beam/module.c3
-rw-r--r--erts/emulator/beam/ops.tab3
-rw-r--r--erts/emulator/beam/register.c3
-rw-r--r--erts/emulator/beam/sys.h10
-rw-r--r--erts/emulator/drivers/common/inet_drv.c9
-rw-r--r--erts/emulator/hipe/hipe_bif0.c12
-rw-r--r--erts/emulator/hipe/hipe_native_bif.c6
-rw-r--r--erts/emulator/hipe/hipe_x86_signal.c28
-rw-r--r--erts/emulator/sys/unix/erl_child_setup.c559
-rw-r--r--erts/emulator/sys/unix/erl_child_setup.h77
-rw-r--r--erts/emulator/sys/unix/erl_unix_sys.h28
-rw-r--r--erts/emulator/sys/unix/sys.c1937
-rw-r--r--erts/emulator/sys/unix/sys_drivers.c1862
-rw-r--r--erts/emulator/sys/unix/sys_uds.c155
-rw-r--r--erts/emulator/sys/unix/sys_uds.h57
-rw-r--r--erts/emulator/sys/win32/sys.c14
-rw-r--r--erts/emulator/test/Makefile1
-rw-r--r--erts/emulator/test/binary_SUITE.erl39
-rw-r--r--erts/emulator/test/bs_bincomp_SUITE.erl2
-rw-r--r--erts/emulator/test/decode_packet_SUITE.erl47
-rw-r--r--erts/emulator/test/driver_SUITE.erl41
-rw-r--r--erts/emulator/test/erts_debug_SUITE.erl45
-rw-r--r--erts/emulator/test/evil_SUITE.erl4
-rw-r--r--erts/emulator/test/hash_SUITE.erl10
-rw-r--r--erts/emulator/test/map_SUITE.erl90
-rw-r--r--erts/emulator/test/message_queue_data_SUITE.erl239
-rw-r--r--erts/emulator/test/nif_SUITE.erl19
-rw-r--r--erts/emulator/test/op_SUITE.erl23
-rw-r--r--erts/emulator/test/port_SUITE.erl141
-rw-r--r--erts/emulator/test/port_SUITE_data/port_test.c35
-rw-r--r--erts/emulator/test/port_bif_SUITE.erl9
-rw-r--r--erts/emulator/test/random_iolist.erl16
-rw-r--r--erts/emulator/test/save_calls_SUITE.erl4
-rw-r--r--erts/emulator/test/system_profile_SUITE.erl2
-rw-r--r--erts/emulator/test/time_SUITE.erl36
-rw-r--r--erts/emulator/test/trace_SUITE.erl4
-rw-r--r--erts/emulator/test/z_SUITE.erl38
-rw-r--r--erts/etc/common/ct_run.c25
-rw-r--r--erts/etc/common/dialyzer.c24
-rw-r--r--erts/etc/common/erlc.c22
-rw-r--r--erts/etc/common/erlexec.c2
-rw-r--r--erts/etc/common/escript.c25
-rw-r--r--erts/etc/common/typer.c26
-rw-r--r--erts/preloaded/ebin/erl_prim_loader.beambin56328 -> 51424 bytes
-rw-r--r--erts/preloaded/ebin/erlang.beambin101816 -> 102012 bytes
-rw-r--r--erts/preloaded/ebin/erts_internal.beambin5964 -> 6260 bytes
-rw-r--r--erts/preloaded/ebin/init.beambin48812 -> 44700 bytes
-rw-r--r--erts/preloaded/ebin/otp_ring0.beambin1468 -> 1452 bytes
-rw-r--r--erts/preloaded/ebin/prim_eval.beambin1340 -> 1324 bytes
-rw-r--r--erts/preloaded/ebin/prim_file.beambin44904 -> 44892 bytes
-rw-r--r--erts/preloaded/ebin/prim_inet.beambin72628 -> 72612 bytes
-rw-r--r--erts/preloaded/ebin/prim_zip.beambin23416 -> 23284 bytes
-rw-r--r--erts/preloaded/ebin/zlib.beambin14176 -> 14160 bytes
-rw-r--r--erts/preloaded/src/erl_prim_loader.erl321
-rw-r--r--erts/preloaded/src/erlang.erl27
-rw-r--r--erts/preloaded/src/erts_internal.erl29
-rw-r--r--erts/preloaded/src/init.erl397
-rw-r--r--erts/preloaded/src/prim_file.erl1
-rw-r--r--erts/test/ethread_SUITE.erl32
-rw-r--r--erts/test/run_erl_SUITE.erl18
104 files changed, 5524 insertions, 3781 deletions
diff --git a/erts/configure.in b/erts/configure.in
index 9ad1588b6c..20075b08c9 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -106,7 +106,6 @@ AC_CONFIG_HEADER($host/config.h:config.h.in include/internal/$host/ethread_heade
dnl ----------------------------------------------------------------------
dnl Optional features.
dnl ----------------------------------------------------------------------
-enable_child_waiter_thread=no
ENABLE_ALLOC_TYPE_VARS=
AC_SUBST(ENABLE_ALLOC_TYPE_VARS)
@@ -1303,11 +1302,7 @@ else
AC_MSG_RESULT(no)
fi
- disable_child_waiter_thread=no
case $host_os in
- solaris*)
- enable_child_waiter_thread=yes
- ;;
linux*)
AC_MSG_CHECKING([whether dlopen() needs to be called before first call to dlerror()])
if test "x$ETHR_THR_LIB_BASE_TYPE" != "xposix_nptl"; then
@@ -1317,16 +1312,6 @@ else
else
AC_MSG_RESULT(no)
fi
- if test "x$ETHR_THR_LIB_BASE_TYPE" != "xposix_nptl"; then
- # Child waiter thread cannot be enabled
- disable_child_waiter_thread=yes
- enable_child_waiter_thread=no
- fi
- ;;
- win32)
- # Child waiter thread cannot be enabled
- disable_child_waiter_thread=yes
- enable_child_waiter_thread=no
;;
*)
;;
@@ -1346,24 +1331,6 @@ else
esac
done
EMU_THR_DEFS=$new_emu_thr_defs
-
- AC_MSG_CHECKING(whether the child waiter thread should be enabled)
- if test $enable_child_waiter_thread = yes; then
- AC_DEFINE(ENABLE_CHILD_WAITER_THREAD,[1],
- [Define if you want to enable child waiter thread])
- AC_MSG_RESULT(yes)
- else
- case $ERTS_BUILD_SMP_EMU-$disable_child_waiter_thread in
- yes-no)
- AC_MSG_RESULT([yes on SMP build, but not on non-SMP build]);;
- *-yes)
- AC_DEFINE(DISABLE_CHILD_WAITER_THREAD,[1],
- [Define if you want to disable child waiter thread])
- AC_MSG_RESULT(no);;
- *)
- AC_MSG_RESULT(no);;
- esac
- fi
fi
AC_SUBST(EMU_THR_LIB_NAME)
@@ -1495,19 +1462,27 @@ dnl
# if -lsocket doesn't work by itself.
#--------------------------------------------------------------------
+tk_oldLibs=$LIBS
erl_checkBoth=0
+SOCKET_LIBS=""
AC_CHECK_FUNC(connect, erl_checkSocket=0, erl_checkSocket=1)
if test "$erl_checkSocket" = 1; then
- AC_CHECK_LIB(socket, main, LIBS="$LIBS -lsocket", erl_checkBoth=1)
+ AC_CHECK_LIB(socket, main, SOCKET_LIBS="-lsocket", erl_checkBoth=1)
fi
+
if test "$erl_checkBoth" = 1; then
- tk_oldLibs=$LIBS
LIBS="$LIBS -lsocket -lnsl"
- AC_CHECK_FUNC(accept, erl_checkNsl=0, [LIBS=$tk_oldLibs])
+ AC_CHECK_FUNC(accept, SOCKET_LIBS="-lsocket -lnsl")
fi
-AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, main, [LIBS="$LIBS -lnsl"]))
+
+LIBS="$tk_oldLibs $SOCKET_LIBS"
+AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, main, [SOCKET_LIBS="$SOCKET_LIBS -lnsl"]))
AC_CHECK_FUNC(gethostbyname_r,have_gethostbyname_r=yes)
+LIBS="$tk_oldLibs $SOCKET_LIBS"
+
+AC_SUBST(SOCKET_LIBS)
+
dnl
dnl These gethostbyname thingies use old style AC_DEFINE for BC with ancient
dnl autoconf...
diff --git a/erts/doc/src/absform.xml b/erts/doc/src/absform.xml
index 49fe784d06..1c0c3e1319 100644
--- a/erts/doc/src/absform.xml
+++ b/erts/doc/src/absform.xml
@@ -11,7 +11,7 @@
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
-
+
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
@@ -19,7 +19,7 @@
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-
+
</legalnotice>
<title>The Abstract Format</title>
@@ -35,24 +35,24 @@
<p></p>
<p>This document describes the standard representation of parse trees for Erlang
programs as Erlang terms. This representation is known as the <em>abstract format</em>.
- Functions dealing with such parse trees are <c><![CDATA[compile:forms/[1,2]]]></c>
+ Functions dealing with such parse trees are <c>compile:forms/[1,2]</c>
and functions in the modules
- <c><![CDATA[epp]]></c>,
- <c><![CDATA[erl_eval]]></c>,
- <c><![CDATA[erl_lint]]></c>,
- <c><![CDATA[erl_pp]]></c>,
- <c><![CDATA[erl_parse]]></c>,
+ <c>epp</c>,
+ <c>erl_eval</c>,
+ <c>erl_lint</c>,
+ <c>erl_pp</c>,
+ <c>erl_parse</c>,
and
- <c><![CDATA[io]]></c>.
+ <c>io</c>.
They are also used as input and output for parse transforms (see the module
- <c><![CDATA[compile]]></c>).</p>
- <p>We use the function <c><![CDATA[Rep]]></c> to denote the mapping from an Erlang source
- construct <c><![CDATA[C]]></c> to its abstract format representation <c><![CDATA[R]]></c>, and write
- <c><![CDATA[R = Rep(C)]]></c>.
+ <c>compile</c>).</p>
+ <p>We use the function <c>Rep</c> to denote the mapping from an Erlang source
+ construct <c>C</c> to its abstract format representation <c>R</c>, and write
+ <c>R = Rep(C)</c>.
</p>
- <p>The word <c><![CDATA[LINE]]></c> below represents an integer, and denotes the
+ <p>The word <c>LINE</c> below represents an integer, and denotes the
number of the line in the source file where the construction occurred.
- Several instances of <c><![CDATA[LINE]]></c> in the same construction may denote
+ Several instances of <c>LINE</c> in the same construction may denote
different lines.</p>
<p>Since operators are not terms in their own right, when operators are
mentioned below, the representation of an operator should be taken to
@@ -61,227 +61,111 @@
</p>
<section>
- <title>Module declarations and forms</title>
+ <title>Module Declarations and Forms</title>
<p>A module declaration consists of a sequence of forms that are either
function declarations or attributes.</p>
<list type="bulleted">
<item>If D is a module declaration consisting of the forms
- <c><![CDATA[F_1]]></c>, ..., <c><![CDATA[F_k]]></c>, then
- Rep(D) = <c><![CDATA[[Rep(F_1), ..., Rep(F_k)]]]></c>.</item>
- <item>If F is an attribute <c><![CDATA[-module(Mod)]]></c>, then
- Rep(F) = <c><![CDATA[{attribute,LINE,module,Mod}]]></c>.</item>
- <item>If F is an attribute <c><![CDATA[-behavior(Behavior)]]></c>, then
- Rep(F) = <c><![CDATA[{attribute,LINE,behavior,Behavior}]]></c>.</item>
- <item>If F is an attribute <c><![CDATA[-behaviour(Behaviour)]]></c>, then
- Rep(F) = <c><![CDATA[{attribute,LINE,behaviour,Behaviour}]]></c>.</item>
- <item>If F is an attribute <c><![CDATA[-export([Fun_1/A_1, ..., Fun_k/A_k])]]></c>, then
- Rep(F) = <c><![CDATA[{attribute,LINE,export,[{Fun_1,A_1}, ..., {Fun_k,A_k}]}]]></c>.</item>
- <item>If F is an attribute <c><![CDATA[-import(Mod,[Fun_1/A_1, ..., Fun_k/A_k])]]></c>, then
- Rep(F) = <c><![CDATA[{attribute,LINE,import,{Mod,[{Fun_1,A_1}, ..., {Fun_k,A_k}]}}]]></c>.</item>
- <item>If F is an attribute <c><![CDATA[-compile(Options)]]></c>, then
- Rep(F) = <c><![CDATA[{attribute,LINE,compile,Options}]]></c>.</item>
- <item>If F is an attribute <c><![CDATA[-file(File,Line)]]></c>, then
- Rep(F) = <c><![CDATA[{attribute,LINE,file,{File,Line}}]]></c>.</item>
- <item>If F is a record declaration <c><![CDATA[-record(Name,{V_1, ..., V_k})]]></c>, then
- Rep(F) =
- <c><![CDATA[{attribute,LINE,record,{Name,[Rep(V_1), ..., Rep(V_k)]}}]]></c>. For Rep(V), see below.</item>
- <item>If F is a type attribute (i.e. <c><![CDATA[opaque]]></c> or
- <c><![CDATA[type]]></c>)
- <c><![CDATA[-Attr Name(A_1, ..., A_k) :: T]]></c> where each
- <c><![CDATA[A_i]]></c> is a variable, then Rep(F) =
- <c><![CDATA[{attribute,LINE,Attr,{Name,Rep(T),[Rep(A_1), ..., Rep(A_k)]}}]]></c>.
- For Rep(T), see below.</item>
- <item>If F is a type spec (i.e. <c><![CDATA[callback]]></c> or
- <c><![CDATA[spec]]></c>)
- <c><![CDATA[-Attr F Tc_1; ...; Tc_k]]></c>,
- where each <c><![CDATA[Tc_i]]></c> is a fun type clause with an
- argument sequence of the same length <c><![CDATA[Arity]]></c>, then
- Rep(F) =
- <c><![CDATA[{Attr,LINE,{{F,Arity},[Rep(Tc_1), ..., Rep(Tc_k)]}}]]></c>.
- For Rep(Tc_i), see below.</item>
- <item>If F is a type spec (i.e. <c><![CDATA[callback]]></c> or
- <c><![CDATA[spec]]></c>)
- <c><![CDATA[-Attr Mod:F Tc_1; ...; Tc_k]]></c>,
- where each <c><![CDATA[Tc_i]]></c> is a fun type clause with an
- argument sequence of the same length <c><![CDATA[Arity]]></c>, then
- Rep(F) =
- <c><![CDATA[{Attr,LINE,{{Mod,F,Arity},[Rep(Tc_1), ..., Rep(Tc_k)]}}]]></c>.
- For Rep(Tc_i), see below.</item>
- <item>If F is a wild attribute <c><![CDATA[-A(T)]]></c>, then
- Rep(F) = <c><![CDATA[{attribute,LINE,A,T}]]></c>.
+ <c>F_1</c>, ..., <c>F_k</c>, then
+ Rep(D) = <c>[Rep(F_1), ..., Rep(F_k)]</c>.</item>
+ <item>If F is an attribute <c>-module(Mod)</c>, then
+ Rep(F) = <c>{attribute,LINE,module,Mod}</c>.</item>
+ <item>If F is an attribute <c>-behavior(Behavior)</c>, then
+ Rep(F) = <c>{attribute,LINE,behavior,Behavior}</c>.</item>
+ <item>If F is an attribute <c>-behaviour(Behaviour)</c>, then
+ Rep(F) = <c>{attribute,LINE,behaviour,Behaviour}</c>.</item>
+ <item>If F is an attribute <c>-export([Fun_1/A_1, ..., Fun_k/A_k])</c>, then
+ Rep(F) = <c>{attribute,LINE,export,[{Fun_1,A_1}, ..., {Fun_k,A_k}]}</c>.</item>
+ <item>If F is an attribute <c>-import(Mod,[Fun_1/A_1, ..., Fun_k/A_k])</c>, then
+ Rep(F) = <c>{attribute,LINE,import,{Mod,[{Fun_1,A_1}, ..., {Fun_k,A_k}]}}</c>.</item>
+ <item>If F is an attribute <c>-export_type([Type_1/A_1, ..., Type_k/A_k])</c>, then
+ Rep(F) = <c>{attribute,LINE,export_type,[{Type_1,A_1}, ..., {Type_k,A_k}]}</c>.</item>
+ <item>If F is an attribute <c>-compile(Options)</c>, then
+ Rep(F) = <c>{attribute,LINE,compile,Options}</c>.</item>
+ <item>If F is an attribute <c>-file(File,Line)</c>, then
+ Rep(F) = <c>{attribute,LINE,file,{File,Line}}</c>.</item>
+ <item>If F is a record declaration
+ <c>-record(Name,{V_1, ..., V_k})</c>, then Rep(F) =
+ <c>{attribute,LINE,record,{Name,[Rep(V_1), ..., Rep(V_k)]}}</c>.
+ For Rep(V), see below.</item>
+ <item>If F is a type declaration
+ <c>-Type Name(V_1, ..., V_k) :: T</c>, where
+ <c>Type</c> is either the atom <c>type</c> or the atom <c>opaque</c>,
+ each <c>V_i</c> is a variable, and <c>T</c> is a type, then Rep(F) =
+ <c>{attribute,LINE,Type,{Name,Rep(T),[Rep(V_1), ..., Rep(V_k)]}}</c>.
+ </item>
+ <item>If F is a function specification
+ <c>-Spec Name Ft_1; ...; Ft_k</c>,
+ where <c>Spec</c> is either the atom <c>spec</c> or the atom
+ <c>callback</c>, and each <c>Ft_i</c> is a possibly constrained
+ function type with an argument sequence of the same length
+ <c>Arity</c>, then Rep(F) =
+ <c>{attribute,Line,Spec,{{Name,Arity},[Rep(Ft_1), ..., Rep(Ft_k)]}}</c>.
+ </item>
+ <item>If F is a function specification
+ <c>-spec Mod:Name Ft_1; ...; Ft_k</c>,
+ where each <c>Ft_i</c> is a possibly constrained
+ function type with an argument sequence of the same length
+ <c>Arity</c>, then Rep(F) =
+ <c>{attribute,Line,spec,{{Mod,Name,Arity},[Rep(Ft_1), ..., Rep(Ft_k)]}}</c>.
+ </item>
+ <item>If F is a wild attribute <c>-A(T)</c>, then
+ Rep(F) = <c>{attribute,LINE,A,T}</c>.
<br></br></item>
- <item>If F is a function declaration <c><![CDATA[Name Fc_1 ; ... ; Name Fc_k]]></c>,
- where each <c><![CDATA[Fc_i]]></c> is a function clause with a
- pattern sequence of the same length <c><![CDATA[Arity]]></c>, then
- Rep(F) = <c><![CDATA[{function,LINE,Name,Arity,[Rep(Fc_1), ...,Rep(Fc_k)]}]]></c>.</item>
+ <item>If F is a function declaration
+ <c>Name Fc_1 ; ... ; Name Fc_k</c>,
+ where each <c>Fc_i</c> is a function clause with a
+ pattern sequence of the same length <c>Arity</c>, then
+ Rep(F) = <c>{function,LINE,Name,Arity,[Rep(Fc_1), ...,Rep(Fc_k)]}</c>.
+ </item>
</list>
<section>
- <title>Type clauses</title>
- <list type="bulleted">
- <item>If T is a fun type clause
- <c><![CDATA[(A_1, ..., A_n) -> Ret]]></c>, where each
- <c><![CDATA[A_i]]></c> and <c><![CDATA[Ret]]></c> are types, then
- Rep(T) =
- <c><![CDATA[{type,LINE,'fun',[{type,LINE,product,[Rep(A_1), ..., Rep(A_n)]},Rep(Ret)]}]]></c>.
- </item>
- <item>If T is a bounded fun type clause <c><![CDATA[Tc when Tg]]></c>,
- where <c><![CDATA[Tc]]></c> is an unbounded fun type clause and
- <c><![CDATA[Tg]]></c> is a type guard sequence, then Rep(T) =
- <c><![CDATA[{type,LINE,bounded_fun,[Rep(Tc),Rep(Tg)]}]]></c>.</item>
- </list>
- </section>
-
- <section>
- <title>Type guards</title>
- <list type="bulleted">
- <item>If G is a constraint <c><![CDATA[F(A_1, ..., A_k)]]></c>, where
- <c><![CDATA[F]]></c> is an atom and each <c><![CDATA[A_i]]></c> is a
- type, then Rep(G) =
- <c><![CDATA[{type,LINE,constraint,[Rep(F),[Rep(A_1), ..., Rep(A_k)]]}]]></c>.
- </item>
- <item>If G is a type definition <c><![CDATA[Name :: Type]]></c>,
- where <c><![CDATA[Name]]></c> is a variable and
- <c><![CDATA[Type]]></c> is a type, then Rep(G) =
- <c><![CDATA[{type,LINE,constraint,[{atom,LINE,is_subtype},[Rep(Name),Rep(Type)]]}]]></c>.</item>
- </list>
- </section>
-
- <section>
- <title>Types</title>
- <list type="bulleted">
- <item>If T is a type definition <c><![CDATA[Name :: Type]]></c>,
- where <c><![CDATA[Name]]></c> is a variable and
- <c><![CDATA[Type]]></c> is a type, then Rep(T) =
- <c><![CDATA[{ann_type,LINE,[Rep(Name),Rep(Type)]}]]></c>.</item>
- <item>If T is a type union <c><![CDATA[A_1 | ... | A_k]]></c>,
- where each <c><![CDATA[A_i]]></c> is a type, then Rep(T) =
- <c><![CDATA[{type,LINE,union,[Rep(A_1), ..., Rep(A_k)]}]]></c>.</item>
- <item>If T is a type range <c><![CDATA[L .. R]]></c>,
- where <c><![CDATA[L]]></c> and <c><![CDATA[R]]></c> are types, then
- Rep(T) = <c><![CDATA[{type,LINE,range,[Rep(L), Rep(R)]}]]></c>.</item>
- <item>If T is a binary operation <c><![CDATA[L Op R]]></c>,
- where <c><![CDATA[Op]]></c> is an arithmetic or bitwise binary operator
- and <c><![CDATA[L]]></c> and <c><![CDATA[R]]></c> are types, then
- Rep(T) = <c><![CDATA[{op,LINE,Op,Rep(L),Rep(R)}]]></c>.</item>
- <item>If T is <c><![CDATA[Op A]]></c>, where <c><![CDATA[Op]]></c> is an
- arithmetic or bitwise unary operator and <c><![CDATA[A]]></c> is a
- type, then Rep(T) = <c><![CDATA[{op,LINE,Op,Rep(A)}]]></c>.</item>
- <item>If T is a fun type <c><![CDATA[fun()]]></c>, then Rep(T) =
- <c><![CDATA[{type,LINE,'fun',[]}]]></c>.</item>
- <item>If T is a variable <c><![CDATA[V]]></c>, then Rep(T) =
- <c><![CDATA[{var,LINE,A}]]></c>, where <c><![CDATA[A]]></c> is an atom
- with a printname consisting of the same characters as
- <c><![CDATA[V]]></c>.</item>
- <item>If T is an atomic literal L and L is not a string literal, then
- Rep(T) = Rep(L).</item>
- <item>If T is a tuple or map type <c><![CDATA[F()]]></c> (i.e.
- <c><![CDATA[tuple]]></c> or <c><![CDATA[map]]></c>), then Rep(T) =
- <c><![CDATA[{type,LINE,F,any}]]></c>.</item>
- <item>If T is a type <c><![CDATA[F(A_1, ..., A_k)]]></c>, where each
- <c><![CDATA[A_i]]></c> is a type, then Rep(T) =
- <c><![CDATA[{user_type,LINE,F,[Rep(A_1), ..., Rep(A_k)]}]]></c>.</item>
- <item>If T is a remote type <c><![CDATA[M:F(A_1, ..., A_k)]]></c>, where
- each <c><![CDATA[A_i]]></c> is a type and <c><![CDATA[M]]></c> and
- <c><![CDATA[F]]></c>, then Rep(T) =
- <c><![CDATA[{remote_type,LINE,[Rep(M),Rep(F),[Rep(A_1), ..., Rep(A_k)]]}]]></c>.
- </item>
- <item>If T is the nil type <c><![CDATA[[]]]></c>, then Rep(T) =
- <c><![CDATA[{type,LINE,nil,[]}]]></c>.</item>
- <item>If T is a list type <c><![CDATA[[A]]]></c>, where
- <c><![CDATA[A]]></c> is a type, then Rep(T) =
- <c><![CDATA[{type,LINE,list,[Rep(A)]}]]></c>.</item>
- <item>If T is a non-empty list type <c><![CDATA[[A, ...]]]></c>, where
- <c><![CDATA[A]]></c> is a type, then Rep(T) =
- <c><![CDATA[{type,LINE,nonempty_list,[Rep(A)]}]]></c>.</item>
- <item>If T is a map type <c><![CDATA[#{P_1, ..., P_k}]]></c>, where each
- <c><![CDATA[P_i]]></c> is a map pair type, then Rep(T) =
- <c><![CDATA[{type,LINE,map,[Rep(P_1), ..., Rep(P_k)]}]]></c>.</item>
- <item>If T is a map pair type <c><![CDATA[K => V]]></c>, where
- <c><![CDATA[K]]></c> and <c><![CDATA[V]]></c> are types,
- then Rep(T) =
- <c><![CDATA[{type,LINE,map_field_assoc,[Rep(K),Rep(V)]}]]></c>.</item>
- <item>If T is a tuple type <c><![CDATA[{A_1, ..., A_k}]]></c>, where
- each <c><![CDATA[A_i]]></c> is a type, then Rep(T) =
- <c><![CDATA[{type,LINE,tuple,[Rep(A_1), ..., Rep(A_k)]}]]></c>.</item>
- <item>If T is a record type <c><![CDATA[#Name{}]]></c>, where
- <c><![CDATA[Name]]></c> is an atom, then Rep(T) =
- <c><![CDATA[{type,LINE,record,[Rep(Name)]}]]></c>.</item>
- <item>If T is a record type <c><![CDATA[#Name{F_1, ..., F_k}]]></c>,
- where <c><![CDATA[Name]]></c> is an atom, then Rep(T) =
- <c><![CDATA[{type,LINE,record,[Rep(Name),[Rep(F_1), ..., Rep(F_k)]]}]]></c>.
- </item>
- <item>If T is a record field type <c><![CDATA[Name :: Type]]></c>,
- where <c><![CDATA[Name]]></c> is an atom, then Rep(T) =
- <c><![CDATA[{type,LINE,field_type,[Rep(Name),Rep(Type)]}]]></c>.</item>
- <item>If T is a record field type <c><![CDATA[<<>>]]></c>, then Rep(T) =
- <c><![CDATA[{type,LINE,binary,[{integer,LINE,0},{integer,LINE,0}]}]]></c>.
- </item>
- <item>If T is a binary type <c><![CDATA[<< _ : B >>]]></c>, where
- <c><![CDATA[B]]></c> is a type, then Rep(T) =
- <c><![CDATA[{type,LINE,binary,[Rep(B),{integer,LINE,0}]}]]></c>.</item>
- <item>If T is a binary type <c><![CDATA[<< _ : _ * U >>]]></c>,
- where <c><![CDATA[U]]></c> is a type, then Rep(T) =
- <c><![CDATA[{type,LINE,binary,[{integer,LINE,0},Rep(U)]}]]></c>.</item>
- <item>If T is a binary type <c><![CDATA[<< _ : B , _ : _ * U >>]]></c>,
- where <c><![CDATA[B]]></c> and <c><![CDATA[U]]></c> is a type, then
- Rep(T) =
- <c><![CDATA[{type,LINE,binary,[Rep(B),Rep(U)]}]]></c>.</item>
-
- <item>If T is a fun type <c><![CDATA[fun((...) -> Ret)]]></c>, then
- Rep(T) = <c><![CDATA[{type,LINE,'fun',[{type,LINE,product,[]},Rep(Ret)]}]]></c>.
- </item>
- <item>If T is a fun type <c><![CDATA[fun(Tc)]]></c>, where
- <c><![CDATA[Tc]]></c> is an unbounded fun type clause,
- then Rep(T) = <c><![CDATA[Rep(Tc)]]></c>.</item>
- </list>
- </section>
-
- <section>
- <title>Record fields</title>
+ <title>Record Fields</title>
<p>Each field in a record declaration may have an optional
- explicit default initializer expression</p>
+ explicit default initializer expression, as well as an
+ optional type.</p>
<list type="bulleted">
- <item>If V is <c><![CDATA[A]]></c>, then
- Rep(V) = <c><![CDATA[{record_field,LINE,Rep(A)}]]></c>.</item>
- <item>If V is <c><![CDATA[A = E]]></c>, then
- Rep(V) = <c><![CDATA[{record_field,LINE,Rep(A),Rep(E)}]]></c>.</item>
- <item>If V is <c><![CDATA[A :: T]]></c>, where <c><![CDATA[A]]></c> is
- an atom and <c><![CDATA[T]]></c> is a type, then Rep(V) =
- <c><![CDATA[{typed_record_field,{record_field,LINE,Rep(A)},Rep(T)}]]></c>.
- </item>
- <item>If V is <c><![CDATA[A = E :: T]]></c>, where <c><![CDATA[A]]></c>
- is an atom, <c><![CDATA[E]]></c> is an expression and
- <c><![CDATA[T]]></c> is a type, then Rep(V) =
- <c><![CDATA[{typed_record_field,{record_field,LINE,Rep(A),Rep(E)},Rep(T)}]]></c>.
- </item>
+ <item>If V is <c>A</c>, then
+ Rep(V) = <c>{record_field,LINE,Rep(A)}</c>.</item>
+ <item>If V is <c>A = E</c>,
+ where <c>E</c> is an expression, then
+ Rep(V) = <c>{record_field,LINE,Rep(A),Rep(E)}</c>.</item>
+ <item>If V is <c>A :: T</c>, where <c>T</c> is a type, then Rep(V) =
+ <c>{typed_record_field,{record_field,LINE,Rep(A)},Rep(T)}</c>.
+ </item>
+ <item>If V is <c>A = E :: T</c>, where
+ <c>E</c> is an expression and <c>T</c> is a type, then Rep(V) =
+ <c>{typed_record_field,{record_field,LINE,Rep(A),Rep(E)},Rep(T)}</c>.
+ </item>
</list>
</section>
<section>
- <title>Representation of parse errors and end of file</title>
+ <title>Representation of Parse Errors and End-of-file</title>
<p>In addition to the representations of forms, the list that represents
- a module declaration (as returned by functions in <c><![CDATA[erl_parse]]></c> and
- <c><![CDATA[epp]]></c>) may contain tuples <c><![CDATA[{error,E}]]></c> and <c><![CDATA[{warning,W}]]></c>, denoting
- syntactically incorrect forms and warnings, and <c><![CDATA[{eof,LINE}]]></c>, denoting an end
- of stream encountered before a complete form had been parsed.</p>
+ a module declaration (as returned by functions in <c>erl_parse</c> and
+ <c>epp</c>) may contain tuples <c>{error,E}</c> and
+ <c>{warning,W}</c>, denoting syntactically incorrect forms and
+ warnings, and <c>{eof,LINE}</c>, denoting an end-of-stream
+ encountered before a complete form had been parsed.</p>
</section>
</section>
<section>
- <title>Atomic literals</title>
+ <title>Atomic Literals</title>
<p>There are five kinds of atomic literals, which are represented in the
same way in patterns, expressions and guards:</p>
<list type="bulleted">
<item>If L is an integer or character literal, then
- Rep(L) = <c><![CDATA[{integer,LINE,L}]]></c>.</item>
+ Rep(L) = <c>{integer,LINE,L}</c>.</item>
<item>If L is a float literal, then
- Rep(L) = <c><![CDATA[{float,LINE,L}]]></c>.</item>
+ Rep(L) = <c>{float,LINE,L}</c>.</item>
<item>If L is a string literal consisting of the characters
- <c><![CDATA[C_1]]></c>, ..., <c><![CDATA[C_k]]></c>, then
- Rep(L) = <c><![CDATA[{string,LINE,[C_1, ..., C_k]}]]></c>.</item>
+ <c>C_1</c>, ..., <c>C_k</c>, then
+ Rep(L) = <c>{string,LINE,[C_1, ..., C_k]}</c>.</item>
<item>If L is an atom literal, then
- Rep(L) = <c><![CDATA[{atom,LINE,L}]]></c>.</item>
+ Rep(L) = <c>{atom,LINE,L}</c>.</item>
</list>
<p>Note that negative integer and float literals do not occur as such; they are
parsed as an application of the unary negation operator.</p>
@@ -289,47 +173,47 @@
<section>
<title>Patterns</title>
- <p>If <c><![CDATA[Ps]]></c> is a sequence of patterns <c><![CDATA[P_1, ..., P_k]]></c>, then
- Rep(Ps) = <c><![CDATA[[Rep(P_1), ..., Rep(P_k)]]]></c>. Such sequences occur as the
+ <p>If <c>Ps</c> is a sequence of patterns <c>P_1, ..., P_k</c>, then
+ Rep(Ps) = <c>[Rep(P_1), ..., Rep(P_k)]</c>. Such sequences occur as the
list of arguments to a function or fun.</p>
<p>Individual patterns are represented as follows:</p>
<list type="bulleted">
<item>If P is an atomic literal L, then Rep(P) = Rep(L).</item>
- <item>If P is a compound pattern <c><![CDATA[P_1 = P_2]]></c>, then
- Rep(P) = <c><![CDATA[{match,LINE,Rep(P_1),Rep(P_2)}]]></c>.</item>
- <item>If P is a variable pattern <c><![CDATA[V]]></c>, then
- Rep(P) = <c><![CDATA[{var,LINE,A}]]></c>,
+ <item>If P is a compound pattern <c>P_1 = P_2</c>, then
+ Rep(P) = <c>{match,LINE,Rep(P_1),Rep(P_2)}</c>.</item>
+ <item>If P is a variable pattern <c>V</c>, then
+ Rep(P) = <c>{var,LINE,A}</c>,
where A is an atom with a printname consisting of the same characters as
- <c><![CDATA[V]]></c>.</item>
- <item>If P is a universal pattern <c><![CDATA[_]]></c>, then
- Rep(P) = <c><![CDATA[{var,LINE,'_'}]]></c>.</item>
- <item>If P is a tuple pattern <c><![CDATA[{P_1, ..., P_k}]]></c>, then
- Rep(P) = <c><![CDATA[{tuple,LINE,[Rep(P_1), ..., Rep(P_k)]}]]></c>.</item>
- <item>If P is a nil pattern <c><![CDATA[[]]]></c>, then
- Rep(P) = <c><![CDATA[{nil,LINE}]]></c>.</item>
- <item>If P is a cons pattern <c><![CDATA[[P_h | P_t]]]></c>, then
- Rep(P) = <c><![CDATA[{cons,LINE,Rep(P_h),Rep(P_t)}]]></c>.</item>
- <item>If E is a binary pattern <c><![CDATA[<<P_1:Size_1/TSL_1, ..., P_k:Size_k/TSL_k>>]]></c>, then
- Rep(E) = <c><![CDATA[{bin,LINE,[{bin_element,LINE,Rep(P_1),Rep(Size_1),Rep(TSL_1)}, ..., {bin_element,LINE,Rep(P_k),Rep(Size_k),Rep(TSL_k)}]}]]></c>.
+ <c>V</c>.</item>
+ <item>If P is a universal pattern <c>_</c>, then
+ Rep(P) = <c>{var,LINE,'_'}</c>.</item>
+ <item>If P is a tuple pattern <c>{P_1, ..., P_k}</c>, then
+ Rep(P) = <c>{tuple,LINE,[Rep(P_1), ..., Rep(P_k)]}</c>.</item>
+ <item>If P is a nil pattern <c>[]</c>, then
+ Rep(P) = <c>{nil,LINE}</c>.</item>
+ <item>If P is a cons pattern <c>[P_h | P_t]</c>, then
+ Rep(P) = <c>{cons,LINE,Rep(P_h),Rep(P_t)}</c>.</item>
+ <item>If E is a binary pattern <c>&lt;&lt;P_1:Size_1/TSL_1, ..., P_k:Size_k/TSL_k>></c>, then
+ Rep(E) = <c>{bin,LINE,[{bin_element,LINE,Rep(P_1),Rep(Size_1),Rep(TSL_1)}, ..., {bin_element,LINE,Rep(P_k),Rep(Size_k),Rep(TSL_k)}]}</c>.
For Rep(TSL), see below.
- An omitted <c><![CDATA[Size]]></c> is represented by <c><![CDATA[default]]></c>. An omitted <c><![CDATA[TSL]]></c>
- (type specifier list) is represented by <c><![CDATA[default]]></c>.</item>
- <item>If P is <c><![CDATA[P_1 Op P_2]]></c>, where <c><![CDATA[Op]]></c> is a binary operator (this
- is either an occurrence of <c><![CDATA[++]]></c> applied to a literal string or character
+ An omitted <c>Size</c> is represented by <c>default</c>. An omitted <c>TSL</c>
+ (type specifier list) is represented by <c>default</c>.</item>
+ <item>If P is <c>P_1 Op P_2</c>, where <c>Op</c> is a binary operator (this
+ is either an occurrence of <c>++</c> applied to a literal string or character
list, or an occurrence of an expression that can be evaluated to a number
at compile time),
- then Rep(P) = <c><![CDATA[{op,LINE,Op,Rep(P_1),Rep(P_2)}]]></c>.</item>
- <item>If P is <c><![CDATA[Op P_0]]></c>, where <c><![CDATA[Op]]></c> is a unary operator (this is an
+ then Rep(P) = <c>{op,LINE,Op,Rep(P_1),Rep(P_2)}</c>.</item>
+ <item>If P is <c>Op P_0</c>, where <c>Op</c> is a unary operator (this is an
occurrence of an expression that can be evaluated to a number at compile
- time), then Rep(P) = <c><![CDATA[{op,LINE,Op,Rep(P_0)}]]></c>.</item>
- <item>If P is a record pattern <c><![CDATA[#Name{Field_1=P_1, ..., Field_k=P_k}]]></c>,
+ time), then Rep(P) = <c>{op,LINE,Op,Rep(P_0)}</c>.</item>
+ <item>If P is a record pattern <c>#Name{Field_1=P_1, ..., Field_k=P_k}</c>,
then Rep(P) =
- <c><![CDATA[{record,LINE,Name, [{record_field,LINE,Rep(Field_1),Rep(P_1)}, ..., {record_field,LINE,Rep(Field_k),Rep(P_k)}]}]]></c>.</item>
- <item>If P is <c><![CDATA[#Name.Field]]></c>, then
- Rep(P) = <c><![CDATA[{record_index,LINE,Name,Rep(Field)}]]></c>.</item>
- <item>If P is <c><![CDATA[( P_0 )]]></c>, then
- Rep(P) = <c><![CDATA[Rep(P_0)]]></c>,
- i.e., patterns cannot be distinguished from their bodies.</item>
+ <c>{record,LINE,Name,[{record_field,LINE,Rep(Field_1),Rep(P_1)}, ..., {record_field,LINE,Rep(Field_k),Rep(P_k)}]}</c>.</item>
+ <item>If P is <c>#Name.Field</c>, then
+ Rep(P) = <c>{record_index,LINE,Name,Rep(Field)}</c>.</item>
+ <item>If P is <c>( P_0 )</c>, then
+ Rep(P) = <c>Rep(P_0)</c>,
+ that is, patterns cannot be distinguished from their bodies.</item>
</list>
<p>Note that every pattern has the same source form as some expression, and is
represented the same way as the corresponding expression.</p>
@@ -337,180 +221,167 @@
<section>
<title>Expressions</title>
- <p>A body B is a sequence of expressions <c><![CDATA[E_1, ..., E_k]]></c>, and
- Rep(B) = <c><![CDATA[[Rep(E_1), ..., Rep(E_k)]]]></c>.</p>
+ <p>A body B is a sequence of expressions <c>E_1, ..., E_k</c>, and
+ Rep(B) = <c>[Rep(E_1), ..., Rep(E_k)]</c>.</p>
<p>An expression E is one of the following alternatives:</p>
<list type="bulleted">
- <item>If P is an atomic literal <c><![CDATA[L]]></c>, then
- Rep(P) = Rep(L).</item>
- <item>If E is <c><![CDATA[P = E_0]]></c>, then
- Rep(E) = <c><![CDATA[{match,LINE,Rep(P),Rep(E_0)}]]></c>.</item>
- <item>If E is a variable <c><![CDATA[V]]></c>, then
- Rep(E) = <c><![CDATA[{var,LINE,A}]]></c>,
- where <c><![CDATA[A]]></c> is an atom with a printname consisting of the same
- characters as <c><![CDATA[V]]></c>.</item>
- <item>If E is a tuple skeleton <c><![CDATA[{E_1, ..., E_k}]]></c>, then
- Rep(E) = <c><![CDATA[{tuple,LINE,[Rep(E_1), ..., Rep(E_k)]}]]></c>.</item>
- <item>If E is <c><![CDATA[[]]]></c>, then
- Rep(E) = <c><![CDATA[{nil,LINE}]]></c>.</item>
- <item>If E is a cons skeleton <c><![CDATA[[E_h | E_t]]]></c>, then
- Rep(E) = <c><![CDATA[{cons,LINE,Rep(E_h),Rep(E_t)}]]></c>.</item>
- <item>If E is a binary constructor <c><![CDATA[<<V_1:Size_1/TSL_1, ..., V_k:Size_k/TSL_k>>]]></c>, then
- Rep(E) = <c><![CDATA[{bin,LINE,[{bin_element,LINE,Rep(V_1),Rep(Size_1),Rep(TSL_1)}, ..., {bin_element,LINE,Rep(V_k),Rep(Size_k),Rep(TSL_k)}]}]]></c>.
+ <item>If P is an atomic literal <c>L</c>, then Rep(P) = Rep(L).</item>
+ <item>If E is <c>P = E_0</c>, then
+ Rep(E) = <c>{match,LINE,Rep(P),Rep(E_0)}</c>.</item>
+ <item>If E is a variable <c>V</c>, then Rep(E) = <c>{var,LINE,A}</c>,
+ where <c>A</c> is an atom with a printname consisting of the same
+ characters as <c>V</c>.</item>
+ <item>If E is a tuple skeleton <c>{E_1, ..., E_k}</c>, then
+ Rep(E) = <c>{tuple,LINE,[Rep(E_1), ..., Rep(E_k)]}</c>.</item>
+ <item>If E is <c>[]</c>, then
+ Rep(E) = <c>{nil,LINE}</c>.</item>
+ <item>If E is a cons skeleton <c>[E_h | E_t]</c>, then
+ Rep(E) = <c>{cons,LINE,Rep(E_h),Rep(E_t)}</c>.</item>
+ <item>If E is a binary constructor <c>&lt;&lt;V_1:Size_1/TSL_1, ..., V_k:Size_k/TSL_k>></c>, then Rep(E) =
+ <c>{bin,LINE,[{bin_element,LINE,Rep(V_1),Rep(Size_1),Rep(TSL_1)}, ..., {bin_element,LINE,Rep(V_k),Rep(Size_k),Rep(TSL_k)}]}</c>.
For Rep(TSL), see below.
- An omitted <c><![CDATA[Size]]></c> is represented by <c><![CDATA[default]]></c>. An omitted <c><![CDATA[TSL]]></c>
- (type specifier list) is represented by <c><![CDATA[default]]></c>.</item>
- <item>If E is <c><![CDATA[E_1 Op E_2]]></c>, where <c><![CDATA[Op]]></c> is a binary operator,
- then Rep(E) = <c><![CDATA[{op,LINE,Op,Rep(E_1),Rep(E_2)}]]></c>.</item>
- <item>If E is <c><![CDATA[Op E_0]]></c>, where <c><![CDATA[Op]]></c> is a unary operator, then
- Rep(E) = <c><![CDATA[{op,LINE,Op,Rep(E_0)}]]></c>.</item>
- <item>If E is <c><![CDATA[#Name{Field_1=E_1, ..., Field_k=E_k}]]></c>, then
- Rep(E) =
- <c><![CDATA[{record,LINE,Name, [{record_field,LINE,Rep(Field_1),Rep(E_1)}, ..., {record_field,LINE,Rep(Field_k),Rep(E_k)}]}]]></c>.</item>
- <item>If E is <c><![CDATA[E_0#Name{Field_1=E_1, ..., Field_k=E_k}]]></c>, then
+ An omitted <c>Size</c> is represented by <c>default</c>. An omitted <c>TSL</c>
+ (type specifier list) is represented by <c>default</c>.</item>
+ <item>If E is <c>E_1 Op E_2</c>, where <c>Op</c> is a binary operator,
+ then Rep(E) = <c>{op,LINE,Op,Rep(E_1),Rep(E_2)}</c>.</item>
+ <item>If E is <c>Op E_0</c>, where <c>Op</c> is a unary operator, then
+ Rep(E) = <c>{op,LINE,Op,Rep(E_0)}</c>.</item>
+ <item>If E is <c>#Name{Field_1=E_1, ..., Field_k=E_k}</c>,
+ then Rep(E) =
+ <c>{record,LINE,Name,[{record_field,LINE,Rep(Field_1),Rep(E_1)}, ..., {record_field,LINE,Rep(Field_k),Rep(E_k)}]}</c>.</item>
+ <item>If E is <c>E_0#Name{Field_1=E_1, ..., Field_k=E_k}</c>, then
Rep(E) =
- <c><![CDATA[{record,LINE,Rep(E_0),Name, [{record_field,LINE,Rep(Field_1),Rep(E_1)}, ..., {record_field,LINE,Rep(Field_k),Rep(E_k)}]}]]></c>.</item>
- <item>If E is <c><![CDATA[#Name.Field]]></c>, then
- Rep(E) = <c><![CDATA[{record_index,LINE,Name,Rep(Field)}]]></c>.</item>
- <item>If E is <c><![CDATA[E_0#Name.Field]]></c>, then
- Rep(E) = <c><![CDATA[{record_field,LINE,Rep(E_0),Name,Rep(Field)}]]></c>.</item>
- <item>If E is <c><![CDATA[#{W_1, ..., W_k}]]></c> where each
- <c><![CDATA[W_i]]></c> is a map assoc or exact field, then Rep(E) =
- <c><![CDATA[{map,LINE,[Rep(W_1), ..., Rep(W_k)]}]]></c>. For Rep(W), see
+ <c>{record,LINE,Rep(E_0),Name,[{record_field,LINE,Rep(Field_1),Rep(E_1)}, ..., {record_field,LINE,Rep(Field_k),Rep(E_k)}]}</c>.</item>
+ <item>If E is <c>#Name.Field</c>, then
+ Rep(E) = <c>{record_index,LINE,Name,Rep(Field)}</c>.</item>
+ <item>If E is <c>E_0#Name.Field</c>, then
+ Rep(E) = <c>{record_field,LINE,Rep(E_0),Name,Rep(Field)}</c>.</item>
+ <item>If E is <c>#{W_1, ..., W_k}</c> where each
+ <c>W_i</c> is a map assoc or exact field, then Rep(E) =
+ <c>{map,LINE,[Rep(W_1), ..., Rep(W_k)]}</c>. For Rep(W), see
below.</item>
- <item>If E is <c><![CDATA[E_0#{W_1, ..., W_k}]]></c> where
- <c><![CDATA[W_i]]></c> is a map assoc or exact field, then Rep(E) =
- <c><![CDATA[{map,LINE,Rep(E_0),[Rep(W_1), ..., Rep(W_k)]}]]></c>. For
- Rep(W), see below.</item>
- <item>If E is <c><![CDATA[catch E_0]]></c>, then
- Rep(E) = <c><![CDATA[{'catch',LINE,Rep(E_0)}]]></c>.</item>
- <item>If E is <c><![CDATA[E_0(E_1, ..., E_k)]]></c>, then
- Rep(E) = <c><![CDATA[{call,LINE,Rep(E_0),[Rep(E_1), ..., Rep(E_k)]}]]></c>.</item>
- <item>If E is <c><![CDATA[E_m:E_0(E_1, ..., E_k)]]></c>, then
- Rep(E) =
- <c><![CDATA[{call,LINE,{remote,LINE,Rep(E_m),Rep(E_0)},[Rep(E_1), ..., Rep(E_k)]}]]></c>.</item>
- <item>If E is a list comprehension <c><![CDATA[[E_0 || W_1, ..., W_k]]]></c>,
- where each <c><![CDATA[W_i]]></c> is a generator or a filter, then
- Rep(E) = <c><![CDATA[{lc,LINE,Rep(E_0),[Rep(W_1), ..., Rep(W_k)]}]]></c>. For Rep(W), see
- below.</item>
- <item>If E is a binary comprehension <c><![CDATA[<<E_0 || W_1, ..., W_k>>]]></c>,
- where each <c><![CDATA[W_i]]></c> is a generator or a filter, then
- Rep(E) = <c><![CDATA[{bc,LINE,Rep(E_0),[Rep(W_1), ..., Rep(W_k)]}]]></c>. For Rep(W), see
+ <item>If E is <c>E_0#{W_1, ..., W_k}</c> where
+ <c>W_i</c> is a map assoc or exact field, then Rep(E) =
+ <c>{map,LINE,Rep(E_0),[Rep(W_1), ..., Rep(W_k)]}</c>.
+ For Rep(W), see below.</item>
+ <item>If E is <c>catch E_0</c>, then
+ Rep(E) = <c>{'catch',LINE,Rep(E_0)}</c>.</item>
+ <item>If E is <c>E_0(E_1, ..., E_k)</c>, then
+ Rep(E) = <c>{call,LINE,Rep(E_0),[Rep(E_1), ..., Rep(E_k)]}</c>.</item>
+ <item>If E is <c>E_m:E_0(E_1, ..., E_k)</c>, then Rep(E) =
+ <c>{call,LINE,{remote,LINE,Rep(E_m),Rep(E_0)},[Rep(E_1), ..., Rep(E_k)]}</c>.
+ </item>
+ <item>If E is a list comprehension <c>[E_0 || W_1, ..., W_k]</c>,
+ where each <c>W_i</c> is a generator or a filter, then Rep(E) =
+ <c>{lc,LINE,Rep(E_0),[Rep(W_1), ..., Rep(W_k)]}</c>. For Rep(W), see
below.</item>
- <item>If E is <c><![CDATA[begin B end]]></c>, where <c><![CDATA[B]]></c> is a body, then
- Rep(E) = <c><![CDATA[{block,LINE,Rep(B)}]]></c>.</item>
- <item>If E is <c><![CDATA[if Ic_1 ; ... ; Ic_k end]]></c>,
- where each <c><![CDATA[Ic_i]]></c> is an if clause then
- Rep(E) =
- <c><![CDATA[{'if',LINE,[Rep(Ic_1), ..., Rep(Ic_k)]}]]></c>.</item>
- <item>If E is <c><![CDATA[case E_0 of Cc_1 ; ... ; Cc_k end]]></c>,
- where <c><![CDATA[E_0]]></c> is an expression and each <c><![CDATA[Cc_i]]></c> is a
- case clause then
- Rep(E) =
- <c><![CDATA[{'case',LINE,Rep(E_0),[Rep(Cc_1), ..., Rep(Cc_k)]}]]></c>.</item>
- <item>If E is <c><![CDATA[try B catch Tc_1 ; ... ; Tc_k end]]></c>,
- where <c><![CDATA[B]]></c> is a body and each <c><![CDATA[Tc_i]]></c> is a catch clause then
- Rep(E) =
- <c><![CDATA[{'try',LINE,Rep(B),[],[Rep(Tc_1), ..., Rep(Tc_k)],[]}]]></c>.</item>
- <item>If E is <c><![CDATA[try B of Cc_1 ; ... ; Cc_k catch Tc_1 ; ... ; Tc_n end]]></c>,
- where <c><![CDATA[B]]></c> is a body,
- each <c><![CDATA[Cc_i]]></c> is a case clause and
- each <c><![CDATA[Tc_j]]></c> is a catch clause then
- Rep(E) =
- <c><![CDATA[{'try',LINE,Rep(B),[Rep(Cc_1), ..., Rep(Cc_k)],[Rep(Tc_1), ..., Rep(Tc_n)],[]}]]></c>.</item>
- <item>If E is <c><![CDATA[try B after A end]]></c>,
- where <c><![CDATA[B]]></c> and <c><![CDATA[A]]></c> are bodies then
- Rep(E) =
- <c><![CDATA[{'try',LINE,Rep(B),[],[],Rep(A)}]]></c>.</item>
- <item>If E is <c><![CDATA[try B of Cc_1 ; ... ; Cc_k after A end]]></c>,
- where <c><![CDATA[B]]></c> and <c><![CDATA[A]]></c> are a bodies and
- each <c><![CDATA[Cc_i]]></c> is a case clause then
- Rep(E) =
- <c><![CDATA[{'try',LINE,Rep(B),[Rep(Cc_1), ..., Rep(Cc_k)],[],Rep(A)}]]></c>.</item>
- <item>If E is <c><![CDATA[try B catch Tc_1 ; ... ; Tc_k after A end]]></c>,
- where <c><![CDATA[B]]></c> and <c><![CDATA[A]]></c> are bodies and
- each <c><![CDATA[Tc_i]]></c> is a catch clause then
- Rep(E) =
- <c><![CDATA[{'try',LINE,Rep(B),[],[Rep(Tc_1), ..., Rep(Tc_k)],Rep(A)}]]></c>.</item>
- <item>If E is <c><![CDATA[try B of Cc_1 ; ... ; Cc_k catch Tc_1 ; ... ; Tc_n after A end]]></c>,
- where <c><![CDATA[B]]></c> and <c><![CDATA[A]]></c> are a bodies,
- each <c><![CDATA[Cc_i]]></c> is a case clause and
- each <c><![CDATA[Tc_j]]></c> is a catch clause then
- Rep(E) =
- <c><![CDATA[{'try',LINE,Rep(B),[Rep(Cc_1), ..., Rep(Cc_k)],[Rep(Tc_1), ..., Rep(Tc_n)],Rep(A)}]]></c>.</item>
- <item>If E is <c><![CDATA[receive Cc_1 ; ... ; Cc_k end]]></c>,
- where each <c><![CDATA[Cc_i]]></c> is a case clause then
+ <item>If E is a binary comprehension
+ <c>&lt;&lt;E_0 || W_1, ..., W_k>></c>,
+ where each <c>W_i</c> is a generator or a filter, then
+ Rep(E) = <c>{bc,LINE,Rep(E_0),[Rep(W_1), ..., Rep(W_k)]}</c>.
+ For Rep(W), see below.</item>
+ <item>If E is <c>begin B end</c>, where <c>B</c> is a body, then
+ Rep(E) = <c>{block,LINE,Rep(B)}</c>.</item>
+ <item>If E is <c>if Ic_1 ; ... ; Ic_k end</c>,
+ where each <c>Ic_i</c> is an if clause then Rep(E) =
+ <c>{'if',LINE,[Rep(Ic_1), ..., Rep(Ic_k)]}</c>.</item>
+ <item>If E is <c>case E_0 of Cc_1 ; ... ; Cc_k end</c>,
+ where <c>E_0</c> is an expression and each <c>Cc_i</c> is a
+ case clause then Rep(E) =
+ <c>{'case',LINE,Rep(E_0),[Rep(Cc_1), ..., Rep(Cc_k)]}</c>.</item>
+ <item>If E is <c>try B catch Tc_1 ; ... ; Tc_k end</c>,
+ where <c>B</c> is a body and each <c>Tc_i</c> is a catch clause then
Rep(E) =
- <c><![CDATA[{'receive',LINE,[Rep(Cc_1), ..., Rep(Cc_k)]}]]></c>.</item>
- <item>If E is <c><![CDATA[receive Cc_1 ; ... ; Cc_k after E_0 -> B_t end]]></c>,
- where each <c><![CDATA[Cc_i]]></c> is a case clause,
- <c><![CDATA[E_0]]></c> is an expression and <c><![CDATA[B_t]]></c> is a body, then
+ <c>{'try',LINE,Rep(B),[],[Rep(Tc_1), ..., Rep(Tc_k)],[]}</c>.</item>
+ <item>If E is <c>try B of Cc_1 ; ... ; Cc_k catch Tc_1 ; ... ; Tc_n end</c>,
+ where <c>B</c> is a body,
+ each <c>Cc_i</c> is a case clause and
+ each <c>Tc_j</c> is a catch clause then Rep(E) =
+ <c>{'try',LINE,Rep(B),[Rep(Cc_1), ..., Rep(Cc_k)],[Rep(Tc_1), ..., Rep(Tc_n)],[]}</c>.</item>
+ <item>If E is <c>try B after A end</c>,
+ where <c>B</c> and <c>A</c> are bodies then Rep(E) =
+ <c>{'try',LINE,Rep(B),[],[],Rep(A)}</c>.</item>
+ <item>If E is <c>try B of Cc_1 ; ... ; Cc_k after A end</c>,
+ where <c>B</c> and <c>A</c> are a bodies and
+ each <c>Cc_i</c> is a case clause then Rep(E) =
+ <c>{'try',LINE,Rep(B),[Rep(Cc_1), ..., Rep(Cc_k)],[],Rep(A)}</c>.</item>
+ <item>If E is <c>try B catch Tc_1 ; ... ; Tc_k after A end</c>,
+ where <c>B</c> and <c>A</c> are bodies and
+ each <c>Tc_i</c> is a catch clause then Rep(E) =
+ <c>{'try',LINE,Rep(B),[],[Rep(Tc_1), ..., Rep(Tc_k)],Rep(A)}</c>.</item>
+ <item>If E is <c>try B of Cc_1 ; ... ; Cc_k catch Tc_1 ; ... ; Tc_n after A end</c>,
+ where <c>B</c> and <c>A</c> are a bodies,
+ each <c>Cc_i</c> is a case clause and
+ each <c>Tc_j</c> is a catch clause then
Rep(E) =
- <c><![CDATA[{'receive',LINE,[Rep(Cc_1), ..., Rep(Cc_k)],Rep(E_0),Rep(B_t)}]]></c>.</item>
- <item>If E is <c><![CDATA[fun Name / Arity]]></c>, then
- Rep(E) = <c><![CDATA[{'fun',LINE,{function,Name,Arity}}]]></c>.</item>
- <item>If E is <c><![CDATA[fun Module:Name/Arity]]></c>, then
- Rep(E) = <c><![CDATA[{'fun',LINE,{function,Rep(Module),Rep(Name),Rep(Arity)}}]]></c>.
- (Before the R15 release: Rep(E) = <c><![CDATA[{'fun',LINE,{function,Module,Name,Arity}}]]></c>.)</item>
- <item>If E is <c><![CDATA[fun Fc_1 ; ... ; Fc_k end]]></c>
- where each <c><![CDATA[Fc_i]]></c> is a function clause then Rep(E) =
- <c><![CDATA[{'fun',LINE,{clauses,[Rep(Fc_1), ..., Rep(Fc_k)]}}]]></c>.</item>
- <item>If E is <c><![CDATA[fun Name Fc_1 ; ... ; Name Fc_k end]]></c>
- where <c><![CDATA[Name]]></c> is a variable and each
- <c><![CDATA[Fc_i]]></c> is a function clause then Rep(E) =
- <c><![CDATA[{named_fun,LINE,Name,[Rep(Fc_1), ..., Rep(Fc_k)]}]]></c>.
+ <c>{'try',LINE,Rep(B),[Rep(Cc_1), ..., Rep(Cc_k)],[Rep(Tc_1), ..., Rep(Tc_n)],Rep(A)}</c>.</item>
+ <item>If E is <c>receive Cc_1 ; ... ; Cc_k end</c>,
+ where each <c>Cc_i</c> is a case clause then Rep(E) =
+ <c>{'receive',LINE,[Rep(Cc_1), ..., Rep(Cc_k)]}</c>.</item>
+ <item>If E is <c>receive Cc_1 ; ... ; Cc_k after E_0 -> B_t end</c>,
+ where each <c>Cc_i</c> is a case clause,
+ <c>E_0</c> is an expression and <c>B_t</c> is a body, then Rep(E) =
+ <c>{'receive',LINE,[Rep(Cc_1), ..., Rep(Cc_k)],Rep(E_0),Rep(B_t)}</c>.</item>
+ <item>If E is <c>fun Name / Arity</c>, then
+ Rep(E) = <c>{'fun',LINE,{function,Name,Arity}}</c>.</item>
+ <item>If E is <c>fun Module:Name/Arity</c>, then Rep(E) =
+ <c>{'fun',LINE,{function,Rep(Module),Rep(Name),Rep(Arity)}}</c>.
+ (Before the R15 release: Rep(E) =
+ <c>{'fun',LINE,{function,Module,Name,Arity}}</c>.)</item>
+ <item>If E is <c>fun Fc_1 ; ... ; Fc_k end</c>
+ where each <c>Fc_i</c> is a function clause then Rep(E) =
+ <c>{'fun',LINE,{clauses,[Rep(Fc_1), ..., Rep(Fc_k)]}}</c>.</item>
+ <item>If E is <c>fun Name Fc_1 ; ... ; Name Fc_k end</c>
+ where <c>Name</c> is a variable and each
+ <c>Fc_i</c> is a function clause then Rep(E) =
+ <c>{named_fun,LINE,Name,[Rep(Fc_1), ..., Rep(Fc_k)]}</c>.
</item>
- <item>If E is <c><![CDATA[query [E_0 || W_1, ..., W_k] end]]></c>,
- where each <c><![CDATA[W_i]]></c> is a generator or a filter, then
- Rep(E) = <c><![CDATA[{'query',LINE,{lc,LINE,Rep(E_0),[Rep(W_1), ..., Rep(W_k)]}}]]></c>.
- For Rep(W), see below.</item>
- <item>If E is <c><![CDATA[E_0.Field]]></c>, a Mnesia record access
- inside a query, then
- Rep(E) = <c><![CDATA[{record_field,LINE,Rep(E_0),Rep(Field)}]]></c>.</item>
- <item>If E is <c><![CDATA[( E_0 )]]></c>, then
- Rep(E) = <c><![CDATA[Rep(E_0)]]></c>,
- i.e., parenthesized expressions cannot be distinguished from their bodies.</item>
+ <item>If E is <c>( E_0 )</c>, then
+ Rep(E) = <c>Rep(E_0)</c>, that is, parenthesized
+ expressions cannot be distinguished from their bodies.</item>
</list>
<section>
- <title>Generators and filters</title>
- <p>When W is a generator or a filter (in the body of a list or binary comprehension), then:</p>
+ <title>Generators and Filters</title>
+ <p>When W is a generator or a filter (in the body of a list or
+ binary comprehension), then:</p>
<list type="bulleted">
- <item>If W is a generator <c><![CDATA[P <- E]]></c>, where <c><![CDATA[P]]></c> is a pattern and <c><![CDATA[E]]></c>
- is an expression, then
- Rep(W) = <c><![CDATA[{generate,LINE,Rep(P),Rep(E)}]]></c>.</item>
- <item>If W is a generator <c><![CDATA[P <= E]]></c>, where <c><![CDATA[P]]></c> is a pattern and <c><![CDATA[E]]></c>
- is an expression, then
- Rep(W) = <c><![CDATA[{b_generate,LINE,Rep(P),Rep(E)}]]></c>.</item>
- <item>If W is a filter <c><![CDATA[E]]></c>, which is an expression, then
- Rep(W) = <c><![CDATA[Rep(E)]]></c>.</item>
+ <item>If W is a generator <c>P &lt;- E</c>, where <c>P</c> is
+ a pattern and <c>E</c> is an expression, then
+ Rep(W) = <c>{generate,LINE,Rep(P),Rep(E)}</c>.</item>
+ <item>If W is a generator <c>P &lt;= E</c>, where <c>P</c> is
+ a pattern and <c>E</c> is an expression, then
+ Rep(W) = <c>{b_generate,LINE,Rep(P),Rep(E)}</c>.</item>
+ <item>If W is a filter <c>E</c>, which is an expression, then
+ Rep(W) = <c>Rep(E)</c>.</item>
</list>
</section>
<section>
- <title>Binary element type specifiers</title>
+ <title>Binary Element Type Specifiers</title>
<p>A type specifier list TSL for a binary element is a sequence of type
- specifiers <c><![CDATA[TS_1 - ... - TS_k]]></c>.
- Rep(TSL) = <c><![CDATA[[Rep(TS_1), ..., Rep(TS_k)]]]></c>.</p>
+ specifiers <c>TS_1 - ... - TS_k</c>.
+ Rep(TSL) = <c>[Rep(TS_1), ..., Rep(TS_k)]</c>.</p>
<p>When TS is a type specifier for a binary element, then:</p>
<list type="bulleted">
- <item>If TS is an atom <c><![CDATA[A]]></c>, Rep(TS) = <c><![CDATA[A]]></c>.</item>
- <item>If TS is a couple <c><![CDATA[A:Value]]></c> where <c><![CDATA[A]]></c> is an atom and <c><![CDATA[Value]]></c>
- is an integer, Rep(TS) = <c><![CDATA[{A, Value}]]></c>.</item>
+ <item>If TS is an atom <c>A</c>, then Rep(TS) = <c>A</c>.</item>
+ <item>If TS is a couple <c>A:Value</c> where <c>A</c> is an atom
+ and <c>Value</c> is an integer, then Rep(TS) =
+ <c>{A,Value}</c>.</item>
</list>
</section>
<section>
- <title>Map assoc and exact fields</title>
+ <title>Map Assoc and Exact Fields</title>
<p>When W is an assoc or exact field (in the body of a map), then:</p>
<list type="bulleted">
- <item>If W is an assoc field <c><![CDATA[K => V]]></c>, where
- <c><![CDATA[K]]></c> and <c><![CDATA[V]]></c> are both expressions,
- then Rep(W) = <c><![CDATA[{map_field_assoc,LINE,Rep(K),Rep(V)}]]></c>.
+ <item>If W is an assoc field <c>K => V</c>, where
+ <c>K</c> and <c>V</c> are both expressions,
+ then Rep(W) = <c>{map_field_assoc,LINE,Rep(K),Rep(V)}</c>.
</item>
- <item>If W is an exact field <c><![CDATA[K := V]]></c>, where
- <c><![CDATA[K]]></c> and <c><![CDATA[V]]></c> are both expressions,
- then Rep(W) = <c><![CDATA[{map_field_exact,LINE,Rep(K),Rep(V)}]]></c>.
+ <item>If W is an exact field <c>K := V</c>, where
+ <c>K</c> and <c>V</c> are both expressions,
+ then Rep(W) = <c>{map_field_exact,LINE,Rep(K),Rep(V)}</c>.
</item>
</list>
</section>
@@ -518,112 +389,220 @@
<section>
<title>Clauses</title>
- <p>There are function clauses, if clauses, case clauses
+ <p>There are function clauses, if clauses, case clauses
and catch clauses.</p>
- <p>A clause <c><![CDATA[C]]></c> is one of the following alternatives:</p>
+ <p>A clause <c>C</c> is one of the following alternatives:</p>
<list type="bulleted">
- <item>If C is a function clause <c><![CDATA[( Ps ) -> B]]></c>
- where <c><![CDATA[Ps]]></c> is a pattern sequence and <c><![CDATA[B]]></c> is a body, then
- Rep(C) = <c><![CDATA[{clause,LINE,Rep(Ps),[],Rep(B)}]]></c>.</item>
- <item>If C is a function clause <c><![CDATA[( Ps ) when Gs -> B]]></c>
- where <c><![CDATA[Ps]]></c> is a pattern sequence,
- <c><![CDATA[Gs]]></c> is a guard sequence and <c><![CDATA[B]]></c> is a body, then
- Rep(C) = <c><![CDATA[{clause,LINE,Rep(Ps),Rep(Gs),Rep(B)}]]></c>.</item>
- <item>If C is an if clause <c><![CDATA[Gs -> B]]></c>
- where <c><![CDATA[Gs]]></c> is a guard sequence and <c><![CDATA[B]]></c> is a body, then
- Rep(C) = <c><![CDATA[{clause,LINE,[],Rep(Gs),Rep(B)}]]></c>.</item>
- <item>If C is a case clause <c><![CDATA[P -> B]]></c>
- where <c><![CDATA[P]]></c> is a pattern and <c><![CDATA[B]]></c> is a body, then
- Rep(C) = <c><![CDATA[{clause,LINE,[Rep(P)],[],Rep(B)}]]></c>.</item>
- <item>If C is a case clause <c><![CDATA[P when Gs -> B]]></c>
- where <c><![CDATA[P]]></c> is a pattern,
- <c><![CDATA[Gs]]></c> is a guard sequence and <c><![CDATA[B]]></c> is a body, then
- Rep(C) = <c><![CDATA[{clause,LINE,[Rep(P)],Rep(Gs),Rep(B)}]]></c>.</item>
- <item>If C is a catch clause <c><![CDATA[P -> B]]></c>
- where <c><![CDATA[P]]></c> is a pattern and <c><![CDATA[B]]></c> is a body, then
- Rep(C) = <c><![CDATA[{clause,LINE,[Rep({throw,P,_})],[],Rep(B)}]]></c>.</item>
- <item>If C is a catch clause <c><![CDATA[X : P -> B]]></c>
- where <c><![CDATA[X]]></c> is an atomic literal or a variable pattern,
- <c><![CDATA[P]]></c> is a pattern and <c><![CDATA[B]]></c> is a body, then
- Rep(C) = <c><![CDATA[{clause,LINE,[Rep({X,P,_})],[],Rep(B)}]]></c>.</item>
- <item>If C is a catch clause <c><![CDATA[P when Gs -> B]]></c>
- where <c><![CDATA[P]]></c> is a pattern, <c><![CDATA[Gs]]></c> is a guard sequence
- and <c><![CDATA[B]]></c> is a body, then
- Rep(C) = <c><![CDATA[{clause,LINE,[Rep({throw,P,_})],Rep(Gs),Rep(B)}]]></c>.</item>
- <item>If C is a catch clause <c><![CDATA[X : P when Gs -> B]]></c>
- where <c><![CDATA[X]]></c> is an atomic literal or a variable pattern,
- <c><![CDATA[P]]></c> is a pattern, <c><![CDATA[Gs]]></c> is a guard sequence
- and <c><![CDATA[B]]></c> is a body, then
- Rep(C) = <c><![CDATA[{clause,LINE,[Rep({X,P,_})],Rep(Gs),Rep(B)}]]></c>.</item>
+ <item>If C is a function clause <c>( Ps ) -> B</c>
+ where <c>Ps</c> is a pattern sequence and <c>B</c> is a body, then
+ Rep(C) = <c>{clause,LINE,Rep(Ps),[],Rep(B)}</c>.</item>
+ <item>If C is a function clause <c>( Ps ) when Gs -> B</c>
+ where <c>Ps</c> is a pattern sequence,
+ <c>Gs</c> is a guard sequence and <c>B</c> is a body, then
+ Rep(C) = <c>{clause,LINE,Rep(Ps),Rep(Gs),Rep(B)}</c>.</item>
+ <item>If C is an if clause <c>Gs -> B</c>
+ where <c>Gs</c> is a guard sequence and <c>B</c> is a body, then
+ Rep(C) = <c>{clause,LINE,[],Rep(Gs),Rep(B)}</c>.</item>
+ <item>If C is a case clause <c>P -> B</c>
+ where <c>P</c> is a pattern and <c>B</c> is a body, then
+ Rep(C) = <c>{clause,LINE,[Rep(P)],[],Rep(B)}</c>.</item>
+ <item>If C is a case clause <c>P when Gs -> B</c>
+ where <c>P</c> is a pattern,
+ <c>Gs</c> is a guard sequence and <c>B</c> is a body, then
+ Rep(C) = <c>{clause,LINE,[Rep(P)],Rep(Gs),Rep(B)}</c>.</item>
+ <item>If C is a catch clause <c>P -> B</c>
+ where <c>P</c> is a pattern and <c>B</c> is a body, then
+ Rep(C) = <c>{clause,LINE,[Rep({throw,P,_})],[],Rep(B)}</c>.</item>
+ <item>If C is a catch clause <c>X : P -> B</c>
+ where <c>X</c> is an atomic literal or a variable pattern,
+ <c>P</c> is a pattern and <c>B</c> is a body, then
+ Rep(C) = <c>{clause,LINE,[Rep({X,P,_})],[],Rep(B)}</c>.</item>
+ <item>If C is a catch clause <c>P when Gs -> B</c>
+ where <c>P</c> is a pattern, <c>Gs</c> is a guard sequence
+ and <c>B</c> is a body, then
+ Rep(C) = <c>{clause,LINE,[Rep({throw,P,_})],Rep(Gs),Rep(B)}</c>.</item>
+ <item>If C is a catch clause <c>X : P when Gs -> B</c>
+ where <c>X</c> is an atomic literal or a variable pattern,
+ <c>P</c> is a pattern, <c>Gs</c> is a guard sequence
+ and <c>B</c> is a body, then
+ Rep(C) = <c>{clause,LINE,[Rep({X,P,_})],Rep(Gs),Rep(B)}</c>.</item>
</list>
</section>
<section>
<title>Guards</title>
- <p>A guard sequence Gs is a sequence of guards <c><![CDATA[G_1; ...; G_k]]></c>, and
- Rep(Gs) = <c><![CDATA[[Rep(G_1), ..., Rep(G_k)]]]></c>. If the guard sequence is
- empty, Rep(Gs) = <c><![CDATA[[]]]></c>.</p>
- <p>A guard G is a nonempty sequence of guard tests <c><![CDATA[Gt_1, ..., Gt_k]]></c>, and
- Rep(G) = <c><![CDATA[[Rep(Gt_1), ..., Rep(Gt_k)]]]></c>.</p>
- <p>A guard test <c><![CDATA[Gt]]></c> is one of the following alternatives:</p>
+ <p>A guard sequence Gs is a sequence of guards <c>G_1; ...; G_k</c>, and
+ Rep(Gs) = <c>[Rep(G_1), ..., Rep(G_k)]</c>. If the guard sequence is
+ empty, Rep(Gs) = <c>[]</c>.</p>
+ <p>A guard G is a nonempty sequence of guard tests
+ <c>Gt_1, ..., Gt_k</c>, and Rep(G) =
+ <c>[Rep(Gt_1), ..., Rep(Gt_k)]</c>.</p>
+ <p>A guard test <c>Gt</c> is one of the following alternatives:</p>
<list type="bulleted">
<item>If Gt is an atomic literal L, then Rep(Gt) = Rep(L).</item>
- <item>If Gt is a variable pattern <c><![CDATA[V]]></c>, then
- Rep(Gt) = <c><![CDATA[{var,LINE,A}]]></c>,
- where A is an atom with a printname consisting of the same characters as
- <c><![CDATA[V]]></c>.</item>
- <item>If Gt is a tuple skeleton <c><![CDATA[{Gt_1, ..., Gt_k}]]></c>, then
- Rep(Gt) = <c><![CDATA[{tuple,LINE,[Rep(Gt_1), ..., Rep(Gt_k)]}]]></c>.</item>
- <item>If Gt is <c><![CDATA[[]]]></c>, then
- Rep(Gt) = <c><![CDATA[{nil,LINE}]]></c>.</item>
- <item>If Gt is a cons skeleton <c><![CDATA[[Gt_h | Gt_t]]]></c>, then
- Rep(Gt) = <c><![CDATA[{cons,LINE,Rep(Gt_h),Rep(Gt_t)}]]></c>.</item>
- <item>If Gt is a binary constructor <c><![CDATA[<<Gt_1:Size_1/TSL_1, ..., Gt_k:Size_k/TSL_k>>]]></c>, then
- Rep(Gt) = <c><![CDATA[{bin,LINE,[{bin_element,LINE,Rep(Gt_1),Rep(Size_1),Rep(TSL_1)}, ..., {bin_element,LINE,Rep(Gt_k),Rep(Size_k),Rep(TSL_k)}]}]]></c>.
+ <item>If Gt is a variable pattern <c>V</c>, then
+ Rep(Gt) = <c>{var,LINE,A}</c>, where A is an atom with
+ a printname consisting of the same characters as <c>V</c>.</item>
+ <item>If Gt is a tuple skeleton <c>{Gt_1, ..., Gt_k}</c>, then
+ Rep(Gt) = <c>{tuple,LINE,[Rep(Gt_1), ..., Rep(Gt_k)]}</c>.</item>
+ <item>If Gt is <c>[]</c>, then Rep(Gt) = <c>{nil,LINE}</c>.</item>
+ <item>If Gt is a cons skeleton <c>[Gt_h | Gt_t]</c>, then
+ Rep(Gt) = <c>{cons,LINE,Rep(Gt_h),Rep(Gt_t)}</c>.</item>
+ <item>If Gt is a binary constructor
+ <c>&lt;&lt;Gt_1:Size_1/TSL_1, ..., Gt_k:Size_k/TSL_k>></c>, then
+ Rep(Gt) = <c>{bin,LINE,[{bin_element,LINE,Rep(Gt_1),Rep(Size_1),Rep(TSL_1)}, ..., {bin_element,LINE,Rep(Gt_k),Rep(Size_k),Rep(TSL_k)}]}</c>.
For Rep(TSL), see above.
- An omitted <c><![CDATA[Size]]></c> is represented by <c><![CDATA[default]]></c>. An omitted <c><![CDATA[TSL]]></c>
- (type specifier list) is represented by <c><![CDATA[default]]></c>.</item>
- <item>If Gt is <c><![CDATA[Gt_1 Op Gt_2]]></c>, where <c><![CDATA[Op]]></c>
- is a binary operator, then Rep(Gt) = <c><![CDATA[{op,LINE,Op,Rep(Gt_1),Rep(Gt_2)}]]></c>.</item>
- <item>If Gt is <c><![CDATA[Op Gt_0]]></c>, where <c><![CDATA[Op]]></c> is a unary operator, then
- Rep(Gt) = <c><![CDATA[{op,LINE,Op,Rep(Gt_0)}]]></c>.</item>
- <item>If Gt is <c><![CDATA[#Name{Field_1=Gt_1, ..., Field_k=Gt_k}]]></c>, then
+ An omitted <c>Size</c> is represented by <c>default</c>.
+ An omitted <c>TSL</c> (type specifier list) is represented
+ by <c>default</c>.</item>
+ <item>If Gt is <c>Gt_1 Op Gt_2</c>, where <c>Op</c>
+ is a binary operator, then Rep(Gt) =
+ <c>{op,LINE,Op,Rep(Gt_1),Rep(Gt_2)}</c>.</item>
+ <item>If Gt is <c>Op Gt_0</c>, where <c>Op</c> is a unary operator, then
+ Rep(Gt) = <c>{op,LINE,Op,Rep(Gt_0)}</c>.</item>
+ <item>If Gt is <c>#Name{Field_1=Gt_1, ..., Field_k=Gt_k}</c>, then
Rep(E) =
- <c><![CDATA[{record,LINE,Name, [{record_field,LINE,Rep(Field_1),Rep(Gt_1)}, ..., {record_field,LINE,Rep(Field_k),Rep(Gt_k)}]}]]></c>.</item>
- <item>If Gt is <c><![CDATA[#Name.Field]]></c>, then
- Rep(Gt) = <c><![CDATA[{record_index,LINE,Name,Rep(Field)}]]></c>.</item>
- <item>If Gt is <c><![CDATA[Gt_0#Name.Field]]></c>, then
- Rep(Gt) = <c><![CDATA[{record_field,LINE,Rep(Gt_0),Name,Rep(Field)}]]></c>.</item>
- <item>If Gt is <c><![CDATA[A(Gt_1, ..., Gt_k)]]></c>, where <c><![CDATA[A]]></c> is an atom, then
- Rep(Gt) = <c><![CDATA[{call,LINE,Rep(A),[Rep(Gt_1), ..., Rep(Gt_k)]}]]></c>.</item>
- <item>If Gt is <c><![CDATA[A_m:A(Gt_1, ..., Gt_k)]]></c>, where <c><![CDATA[A_m]]></c> is
- the atom <c><![CDATA[erlang]]></c> and <c><![CDATA[A]]></c> is an atom or an operator, then
- Rep(Gt) = <c><![CDATA[{call,LINE,{remote,LINE,Rep(A_m),Rep(A)},[Rep(Gt_1), ..., Rep(Gt_k)]}]]></c>.</item>
- <item>If Gt is <c><![CDATA[{A_m,A}(Gt_1, ..., Gt_k)]]></c>, where <c><![CDATA[A_m]]></c> is
- the atom <c><![CDATA[erlang]]></c> and <c><![CDATA[A]]></c> is an atom or an operator, then
- Rep(Gt) = <c><![CDATA[{call,LINE,Rep({A_m,A}),[Rep(Gt_1), ..., Rep(Gt_k)]}]]></c>.</item>
- <item>If Gt is <c><![CDATA[( Gt_0 )]]></c>, then
- Rep(Gt) = <c><![CDATA[Rep(Gt_0)]]></c>,
- i.e., parenthesized guard tests cannot be distinguished from their bodies.</item>
+ <c>{record,LINE,Name,[{record_field,LINE,Rep(Field_1),Rep(Gt_1)}, ..., {record_field,LINE,Rep(Field_k),Rep(Gt_k)}]}</c>.</item>
+ <item>If Gt is <c>#Name.Field</c>, then
+ Rep(Gt) = <c>{record_index,LINE,Name,Rep(Field)}</c>.</item>
+ <item>If Gt is <c>Gt_0#Name.Field</c>, then
+ Rep(Gt) = <c>{record_field,LINE,Rep(Gt_0),Name,Rep(Field)}</c>.</item>
+ <item>If Gt is <c>A(Gt_1, ..., Gt_k)</c>, where <c>A</c> is an atom, then
+ Rep(Gt) = <c>{call,LINE,Rep(A),[Rep(Gt_1), ..., Rep(Gt_k)]}</c>.</item>
+ <item>If Gt is <c>A_m:A(Gt_1, ..., Gt_k)</c>, where <c>A_m</c> is
+ the atom <c>erlang</c> and <c>A</c> is an atom or an operator, then
+ Rep(Gt) = <c>{call,LINE,{remote,LINE,Rep(A_m),Rep(A)},[Rep(Gt_1), ..., Rep(Gt_k)]}</c>.</item>
+ <item>If Gt is <c>{A_m,A}(Gt_1, ..., Gt_k)</c>, where <c>A_m</c> is
+ the atom <c>erlang</c> and <c>A</c> is an atom or an operator, then
+ Rep(Gt) = <c>{call,LINE,Rep({A_m,A}),[Rep(Gt_1), ..., Rep(Gt_k)]}</c>.
+ </item>
+ <item>If Gt is <c>( Gt_0 )</c>, then
+ Rep(Gt) = <c>Rep(Gt_0)</c>, that is, parenthesized
+ guard tests cannot be distinguished from their bodies.</item>
</list>
<p>Note that every guard test has the same source form as some expression,
and is represented the same way as the corresponding expression.</p>
</section>
<section>
- <title>The abstract format after preprocessing</title>
- <p>The compilation option <c><![CDATA[debug_info]]></c> can be given to the
- compiler to have the abstract code stored in
- the <c><![CDATA[abstract_code]]></c> chunk in the BEAM file
+ <title>Types</title>
+ <list type="bulleted">
+ <item>If T is an annotated type <c>Anno :: Type</c>,
+ where <c>Anno</c> is a variable and
+ <c>Type</c> is a type, then Rep(T) =
+ <c>{ann_type,LINE,[Rep(Anno),Rep(Type)]}</c>.</item>
+ <item>If T is an atom or integer literal L, then Rep(T) = Rep(L).
+ </item>
+ <item>If T is <c>L Op R</c>,
+ where <c>Op</c> is a binary operator and <c>L</c> and <c>R</c>
+ are types (this is an occurrence of an expression that can be
+ evaluated to an integer at compile time), then
+ Rep(T) = <c>{op,LINE,Op,Rep(L),Rep(R)}</c>.</item>
+ <item>If T is <c>Op A</c>, where <c>Op</c> is a
+ unary operator and <c>A</c> is a type (this is an occurrence of
+ an expression that can be evaluated to an integer at compile time),
+ then Rep(T) = <c>{op,LINE,Op,Rep(A)}</c>.</item>
+ <item>If T is a bitstring type <c>&lt;&lt;_:M,_:_*N>></c>,
+ where <c>M</c> and <c>N</c> are singleton integer types, then Rep(T) =
+ <c>{type,LINE,binary,[Rep(M),Rep(N)]}</c>.</item>
+ <item>If T is the empty list type <c>[]</c>, then Rep(T) =
+ <c>{type,Line,nil,[]}</c>.</item>
+ <item>If T is a fun type <c>fun()</c>, then Rep(T) =
+ <c>{type,LINE,'fun',[]}</c>.</item>
+ <item>If T is a fun type <c>fun((...) -> B)</c>,
+ where <c>B</c> is a type, then
+ Rep(T) = <c>{type,LINE,'fun',[{type,LINE,any},Rep(B)]}</c>.
+ </item>
+ <item>If T is a fun type <c>fun(Ft)</c>, where
+ <c>Ft</c> is a function type,
+ then Rep(T) = <c>Rep(Ft)</c>.</item>
+ <item>If T is an integer range type <c>L .. H</c>,
+ where <c>L</c> and <c>H</c> are singleton integer types, then
+ Rep(T) = <c>{type,LINE,range,[Rep(L),Rep(H)]}</c>.</item>
+ <item>If T is a map type <c>map()</c>, then Rep(T) =
+ <c>{type,LINE,map,any}</c>.</item>
+ <item>If T is a map type <c>#{P_1, ..., P_k}</c>, where each
+ <c>P_i</c> is a map pair type, then Rep(T) =
+ <c>{type,LINE,map,[Rep(P_1), ..., Rep(P_k)]}</c>.</item>
+ <item>If T is a map pair type <c>K => V</c>, where
+ <c>K</c> and <c>V</c> are types, then Rep(T) =
+ <c>{type,LINE,map_field_assoc,[Rep(K),Rep(V)]}</c>.</item>
+ <item>If T is a predefined (or built-in) type <c>N(A_1, ..., A_k)</c>,
+ where each <c>A_i</c> is a type, then Rep(T) =
+ <c>{type,LINE,N,[Rep(A_1), ..., Rep(A_k)]}</c>.</item>
+ <item>If T is a record type <c>#Name{F_1, ..., F_k}</c>,
+ where each <c>F_i</c> is a record field type, then Rep(T) =
+ <c>{type,LINE,record,[Rep(Name),Rep(F_1), ..., Rep(F_k)]}</c>.
+ </item>
+ <item>If T is a record field type <c>Name :: Type</c>,
+ where <c>Type</c> is a type, then Rep(T) =
+ <c>{type,LINE,field_type,[Rep(Name),Rep(Type)]}</c>.</item>
+ <item>If T is a remote type <c>M:N(A_1, ..., A_k)</c>, where
+ each <c>A_i</c> is a type, then Rep(T) =
+ <c>{remote_type,LINE,[Rep(M),Rep(N),[Rep(A_1), ..., Rep(A_k)]]}</c>.
+ </item>
+ <item>If T is a tuple type <c>tuple()</c>, then Rep(T) =
+ <c>{type,LINE,tuple,any}</c>.</item>
+ <item>If T is a tuple type <c>{A_1, ..., A_k}</c>, where
+ each <c>A_i</c> is a type, then Rep(T) =
+ <c>{type,LINE,tuple,[Rep(A_1), ..., Rep(A_k)]}</c>.</item>
+ <item>If T is a type union <c>T_1 | ... | T_k</c>,
+ where each <c>T_i</c> is a type, then Rep(T) =
+ <c>{type,LINE,union,[Rep(T_1), ..., Rep(T_k)]}</c>.</item>
+ <item>If T is a type variable <c>V</c>, then Rep(T) =
+ <c>{var,LINE,A}</c>, where <c>A</c> is an atom with a printname
+ consisting of the same characters as <c>V</c>. A type variable
+ is any variable except underscore (<c>_</c>).</item>
+ <item>If T is a user-defined type <c>N(A_1, ..., A_k)</c>,
+ where each <c>A_i</c> is a type, then Rep(T) =
+ <c>{user_type,LINE,N,[Rep(A_1), ..., Rep(A_k)]}</c>.</item>
+ <item>If T is <c>( T_0 )</c>, then Rep(T) = <c>Rep(T_0)</c>,
+ that is, parenthesized types cannot be distinguished from their
+ bodies.</item>
+ </list>
+
+ <section>
+ <title>Function Types</title>
+ <list type="bulleted">
+ <item>If Ft is a constrained function type <c>Ft_1 when Fc</c>,
+ where <c>Ft_1</c> is a function type and
+ <c>Fc</c> is a function constraint, then Rep(T) =
+ <c>{type,LINE,bounded_fun,[Rep(Ft_1),Rep(Fc)]}</c>.</item>
+ <item>If Ft is a function type <c>(A_1, ..., A_n) -> B</c>,
+ where each <c>A_i</c> and <c>B</c> are types, then
+ Rep(Ft) = <c>{type,LINE,'fun',[{type,LINE,product,[Rep(A_1),
+ ..., Rep(A_n)]},Rep(B)]}</c>.</item>
+ </list>
+ </section>
+
+ <section>
+ <title>Function Constraints</title>
+ <p>A function constraint Fc is a nonempty sequence of constraints
+ <c>C_1, ..., C_k</c>, and
+ Rep(Fc) = <c>[Rep(C_1), ..., Rep(C_k)]</c>.</p>
+ <list type="bulleted">
+ <item>If C is a constraint <c>is_subtype(V, T)</c> or <c>V :: T</c>,
+ where <c>V</c> is a type variable and <c>T</c> is a type, then
+ Rep(C) = <c>{type,LINE,constraint,[{atom,LINE,is_subtype},[Rep(V),Rep(T)]]}</c>.
+ </item>
+ </list>
+ </section>
+ </section>
+
+ <section>
+ <title>The Abstract Format After Preprocessing</title>
+ <p>The compilation option <c>debug_info</c> can be given to the
+ compiler to have the abstract code stored in
+ the <c>abstract_code</c> chunk in the BEAM file
(for debugging purposes).</p>
- <p>In OTP R9C and later, the <c><![CDATA[abstract_code]]></c> chunk will
+ <p>In OTP R9C and later, the <c>abstract_code</c> chunk will
contain</p>
- <p><c><![CDATA[{raw_abstract_v1,AbstractCode}]]></c></p>
- <p>where <c><![CDATA[AbstractCode]]></c> is the abstract code as described
+ <p><c>{raw_abstract_v1,AbstractCode}</c></p>
+ <p>where <c>AbstractCode</c> is the abstract code as described
in this document.</p>
<p>In releases of OTP prior to R9C, the abstract code after some more
processing was stored in the BEAM file. The first element of the
- tuple would be either <c><![CDATA[abstract_v1]]></c> (R7B) or <c><![CDATA[abstract_v2]]></c>
+ tuple would be either <c>abstract_v1</c> (R7B) or <c>abstract_v2</c>
(R8B).</p>
</section>
</chapter>
diff --git a/erts/doc/src/driver_entry.xml b/erts/doc/src/driver_entry.xml
index c802693977..ae7f264d0c 100644
--- a/erts/doc/src/driver_entry.xml
+++ b/erts/doc/src/driver_entry.xml
@@ -437,7 +437,14 @@ typedef struct erl_drv_entry {
<seealso marker="erl_driver#erl_drv_busy_msgq_limits">erl_drv_busy_msgq_limits()</seealso>
function.
</item>
- </taglist>
+ <tag><c>ERL_DRV_FLAG_USE_INIT_ACK</c></tag>
+ <item>When this flag is given the linked-in driver has to manually
+ acknowledge that the port has been successfully started using
+ <seealso marker="erl_driver#erl_drv_init_ack">erl_drv_init_ack()</seealso>.
+ This allows the implementor to make the erlang:open_port exit with
+ badarg after some initial asynchronous initialization has been done.
+ </item>
+ </taglist>
</item>
<tag>void *handle2</tag>
<item>
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index c4eb0e16ec..b6fa4c254c 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -1338,14 +1338,14 @@
<item>
<p>Default process flag settings.</p>
<taglist>
- <tag><marker id="+xohmq"><c>+xohmq true|false</c></marker></tag>
+ <tag><marker id="+xmqd"><c>+xmqd off_heap|on_heap|mixed</c></marker></tag>
<item><p>
Sets the default value for the process flag
- <c>off_heap_message_queue</c>. If <c>+xohmq</c> is not
- passed, <c>false</c> will be the default. For more information,
+ <c>message_queue_data</c>. If <c>+xmqd</c> is not
+ passed, <c>mixed</c> will be the default. For more information,
see the documentation of
- <seealso marker="erlang#process_flag_off_heap_message_queue"><c>process_flag(off_heap_message_queue,
- OHMQ)</c></seealso>.
+ <seealso marker="erlang#process_flag_message_queue_data"><c>process_flag(message_queue_data,
+ MQD)</c></seealso>.
</p></item>
</taglist>
</item>
diff --git a/erts/doc/src/erl_driver.xml b/erts/doc/src/erl_driver.xml
index e81d38cb80..cade732c56 100644
--- a/erts/doc/src/erl_driver.xml
+++ b/erts/doc/src/erl_driver.xml
@@ -2131,6 +2131,53 @@ ERL_DRV_MAP int sz
</func>
<func>
+ <name><ret>void</ret><nametext>erl_drv_init_ack(ErlDrvPort port, ErlDrvData res)</nametext></name>
+ <fsummary>Acknowledge the start of the port</fsummary>
+ <desc>
+ <marker id="erl_drv_init_ack"></marker>
+ <p>Arguments:</p>
+ <taglist>
+ <tag><c>port</c></tag>
+ <item>The port handle of the port (driver instance) creating
+ doing the acknowledgment.
+ </item>
+ <tag><c>res</c></tag>
+ <item>The result of the port initialization. This can be the same values
+ as the return value of <seealso marker="driver_entry#start">start</seealso>,
+ i.e any of the error codes or the ErlDrvData that is to be used for this
+ port.
+ </item>
+ </taglist>
+ <p>
+ When this function is called the initiating erlang:open_port call is
+ returned as if the <seealso marker="driver_entry#start">start</seealso>
+ function had just been called. It can only be used when the
+ <seealso marker="driver_entry#driver_flags">ERL_DRV_FLAG_USE_INIT_ACK</seealso>
+ flag has been set on the linked-in driver.
+ </p>
+ </desc>
+ </func>
+
+ <func>
+ <name><ret>void</ret><nametext>erl_drv_set_os_pid(ErlDrvPort port, ErlDrvSInt pid)</nametext></name>
+ <fsummary>Set the os_pid for the port</fsummary>
+ <desc>
+ <marker id="erl_drv_set_os_pid"></marker>
+ <p>Arguments:</p>
+ <taglist>
+ <tag><c>port</c></tag>
+ <item>The port handle of the port (driver instance) to set the pid on.
+ </item>
+ <tag><c>pid</c></tag>
+ <item>The pid to set.</item>
+ </taglist>
+ <p>
+ Set the os_pid seen when doing erlang:port_info/2 on this port.
+ </p>
+ </desc>
+ </func>
+
+ <func>
<name><ret>int</ret><nametext>erl_drv_thread_create(char *name,
ErlDrvTid *tid,
void * (*func)(void *),
diff --git a/erts/doc/src/erl_prim_loader.xml b/erts/doc/src/erl_prim_loader.xml
index db4f132609..8f66e07ae1 100644
--- a/erts/doc/src/erl_prim_loader.xml
+++ b/erts/doc/src/erl_prim_loader.xml
@@ -50,36 +50,9 @@
<c>-loader_debug</c> are also experimental</p></warning>
</description>
- <datatypes>
- <datatype>
- <name name="host"/>
- </datatype>
- </datatypes>
<funcs>
<func>
- <name name="start" arity="3"/>
- <fsummary>Start the Erlang low level loader</fsummary>
- <desc>
- <p>Starts the Erlang low level loader. This function is called
- by the <c>init</c> process (and module). The <c>init</c>
- process reads the command line flags <c>-id <anno>Id</anno></c>,
- <c>-loader <anno>Loader</anno></c>, and <c>-hosts <anno>Hosts</anno></c>. These are
- the arguments supplied to the <c>start/3</c> function.</p>
- <p>If <c>-loader</c> is not given, the default loader is
- <c>efile</c> which tells the system to read from the file
- system.</p>
- <p>If <c>-loader</c> is <c>inet</c>, the <c>-id <anno>Id</anno></c>,
- <c>-hosts <anno>Hosts</anno></c>, and <c>-setcookie Cookie</c> flags must
- also be supplied. <c><anno>Hosts</anno></c> identifies hosts which this
- node can contact in order to load modules. One Erlang
- runtime system with a <c>erl_boot_server</c> process must be
- started on each of hosts given in <c><anno>Hosts</anno></c> in order to
- answer the requests. See <seealso
- marker="kernel:erl_boot_server">erl_boot_server(3)</seealso>.</p>
- </desc>
- </func>
- <func>
<name name="get_file" arity="1"/>
<fsummary>Get a file</fsummary>
<desc>
@@ -87,8 +60,6 @@
<c><anno>Filename</anno></c> is either an absolute file name or just the name
of the file, for example <c>"lists.beam"</c>. If an internal
path is set to the loader, this path is used to find the file.
- If a user supplied loader is used, the path can be stripped
- off if it is obsolete, and the loader does not use a path.
<c><anno>FullName</anno></c> is the complete name of the fetched file.
<c><anno>Bin</anno></c> is the contents of the file as a binary.</p>
@@ -189,17 +160,12 @@
<p>Specifies which other Erlang nodes the <c>inet</c> loader
can use. This flag is mandatory if the <c>-loader inet</c>
flag is present. On each host, there must be on Erlang node
- with the <c>erl_boot_server</c> which handles the load
- requests. <c>Hosts</c> is a list of IP addresses (hostnames
+ with the <seealso
+ marker="kernel:erl_boot_server">erl_boot_server(3)</seealso>
+ which handles the load requests.
+ <c>Hosts</c> is a list of IP addresses (hostnames
are not acceptable).</p>
</item>
- <tag><c>-id Id</c></tag>
- <item>
- <p>Specifies the identity of the Erlang runtime system. If
- the system runs as a distributed node, <c>Id</c> must be
- identical to the name supplied with the <c>-sname</c> or
- <c>-name</c> distribution flags.</p>
- </item>
<tag><c>-setcookie Cookie</c></tag>
<item>
<p>Specifies the cookie of the Erlang runtime system. This flag
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index 2e82bb62a9..6ed03f3dfc 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -59,6 +59,12 @@
</datatype>
<datatype>
+ <name name="message_queue_data"></name>
+ <desc><p>See <seealso marker="#process_flag_message_queue_data"><c>erlang:process_flag(message_queue_data, MQD)</c></seealso>.</p>
+ </desc>
+ </datatype>
+
+ <datatype>
<name name="timestamp"></name>
<desc><p>See <seealso marker="#timestamp/0">erlang:timestamp/0</seealso>.</p>
</desc>
@@ -4280,39 +4286,52 @@ os_prompt% </pre>
<p>Returns the old value of the flag.</p>
</desc>
</func>
- <marker id="process_flag_off_heap_message_queue"/>
+ <marker id="process_flag_message_queue_data"/>
<func>
<name name="process_flag" arity="2" clause_i="5"/>
- <fsummary>Set process flag <c>off_heap_message_queue</c> for the calling process</fsummary>
+ <fsummary>Set process flag <c>message_queue_data</c> for the calling process</fsummary>
+ <type name="message_queue_data"/>
<desc>
<p>This flag determines how messages in the message queue
are stored. When the flag is:</p>
<taglist>
- <tag><c>true</c></tag>
+ <tag><c>off_heap</c></tag>
<item><p>
<em>All</em> messages in the message queue will be stored
outside of the process heap. This implies that <em>no</em>
messages in the message queue will be part of a garbage
collection of the process.
</p></item>
- <tag><c>false</c></tag>
+ <tag><c>on_heap</c></tag>
+ <item><p>
+ All messages in the message queue will eventually be
+ placed on heap. They may however temporarily be stored
+ off heap. This is how messages always have been stored
+ up until ERTS version 8.0.
+ </p></item>
+ <tag><c>mixed</c></tag>
<item><p>
Messages may be placed either on the heap or outside
of the heap.
</p></item>
</taglist>
<p>
+ The default <c>message_queue_data</c> process flag is determined
+ by the <seealso marker="erl#+xmqd"><c>+xmqd</c></seealso>
+ <c>erl</c> command line argument.
+ </p>
+ <p>
If the process potentially may get a hugh amount of messages,
- you are recommended to set the flag to <c>true</c>. This since
- a garbage collection with lots of messages placed on the heap
- may become extremly expensive. Performance of the actual
- message passing is however generally better when setting the
- flag to <c>false</c>.
+ you are recommended to set the flag to <c>off_heap</c>. This
+ since a garbage collection with lots of messages placed on
+ the heap may become extremly expensive and the process may
+ consume large amounts of memory. Performance of the
+ actual message passing is however generally better when not
+ using the <c>off_heap</c> flag.
</p>
<p>
- When changing this flag from <c>false</c> to <c>true</c>,
- all messages in the message queue are moved off heap. This
- work has been initiated but not completed when this function
+ When changing this flag messages will be moved. This work
+ has been initiated but not completed when this function
call returns.
</p>
<p>Returns the old value of the flag.</p>
@@ -4478,6 +4497,7 @@ os_prompt% </pre>
<type name="process_info_result_item"/>
<type name="priority_level"/>
<type name="stack_item"/>
+ <type name="message_queue_data" />
<desc>
<p>Returns a list containing <c><anno>InfoTuple</anno></c>s with
miscellaneous information about the process identified by
@@ -4530,6 +4550,7 @@ os_prompt% </pre>
<type name="process_info_result_item"/>
<type name="stack_item"/>
<type name="priority_level"/>
+ <type name="message_queue_data" />
<desc>
<p>Returns information about the process identified by
<c><anno>Pid</anno></c>, as specified by
@@ -4698,13 +4719,14 @@ os_prompt% </pre>
monitor by name, the list item is
<c>{process, {<anno>RegName</anno>, <anno>Node</anno>}}</c>.</p>
</item>
- <tag><c>{off_heap_message_queue, <anno>OHMQ</anno>}</c></tag>
+ <tag><c>{message_queue_data, <anno>MQD</anno>}</c></tag>
<item>
- <p>Returns the current state of the <c>off_heap_message_queue</c>
- process flag. <c><anno>OHMQ</anno></c> is either <c>true</c>, or
- <c>false</c>. For more information, see the documentation of
- <seealso marker="#process_flag_off_heap_message_queue"><c>process_flag(off_heap_message_queue,
- OHMQ)</c></seealso>.</p>
+ <p>Returns the current state of the <c>message_queue_data</c>
+ process flag. <c><anno>MQD</anno></c> is either <c>off_heap</c>,
+ <c>on_heap</c>, or <c>mixed</c>. For more information, see the
+ documentation of
+ <seealso marker="#process_flag_message_queue_data"><c>process_flag(message_queue_data,
+ MQD)</c></seealso>.</p>
</item>
<tag><c>{priority, <anno>Level</anno>}</c></tag>
<item>
@@ -5474,6 +5496,7 @@ true</pre>
<name name="spawn_opt" arity="2"/>
<fsummary>Creates a new process with a fun as entry point.</fsummary>
<type name="priority_level"/>
+ <type name="message_queue_data" />
<type name="spawn_opt_option" />
<desc>
<p>Returns the process identifier (pid) of a new process
@@ -5490,6 +5513,7 @@ true</pre>
<name name="spawn_opt" arity="3"/>
<fsummary>Creates a new process with a fun as entry point on a given node.</fsummary>
<type name="priority_level"/>
+ <type name="message_queue_data" />
<type name="spawn_opt_option" />
<desc>
<p>Returns the process identifier (pid) of a new process started
@@ -5505,6 +5529,7 @@ true</pre>
<name name="spawn_opt" arity="4"/>
<fsummary>Creates a new process with a function as entry point.</fsummary>
<type name="priority_level"/>
+ <type name="message_queue_data" />
<type name="spawn_opt_option" />
<desc>
<p>Works as
@@ -5607,17 +5632,17 @@ true</pre>
fine-tuning an application and to measure the execution
time with various <c><anno>VSize</anno></c> values.</p>
</item>
- <tag><c>{off_heap_message_queue, <anno>OHMQ</anno>}</c></tag>
+ <tag><c>{message_queue_data, <anno>MQD</anno>}</c></tag>
<item>
- <p>Sets the state of the <c>off_heap_message_queue</c> process
- flag. <c><anno>OHMQ</anno></c> should be either <c>true</c>, or
- <c>false</c>. The default <c>off_heap_message_queue</c> process
- flag is determined by the
- <seealso marker="erl#+xohmq"><c>+xohmq</c></seealso> <c>erl</c>
+ <p>Sets the state of the <c>message_queue_data</c> process
+ flag. <c><anno>MQD</anno></c> should be either <c>off_heap</c>,
+ <c>on_heap</c>, or <c>mixed</c>. The default
+ <c>message_queue_data</c> process flag is determined by the
+ <seealso marker="erl#+xmqd"><c>+xmqd</c></seealso> <c>erl</c>
command line argument. For more information, see the
documentation of
- <seealso marker="#process_flag_off_heap_message_queue"><c>process_flag(off_heap_message_queue,
- <anno>OHMQ</anno>)</c></seealso>.</p>
+ <seealso marker="#process_flag_message_queue_data"><c>process_flag(message_queue_data,
+ <anno>MQD</anno>)</c></seealso>.</p>
</item>
</taglist>
</desc>
@@ -5627,6 +5652,7 @@ true</pre>
<name name="spawn_opt" arity="5"/>
<fsummary>Creates a new process with a function as entry point on a given node.</fsummary>
<type name="priority_level"/>
+ <type name="message_queue_data" />
<type name="spawn_opt_option" />
<desc>
<p>Returns the process identifier (pid) of a new process started
@@ -7106,15 +7132,15 @@ ok
used by the runtime system. It is on the form
"&lt;major ver&gt;.&lt;minor ver&gt;".</p>
</item>
- <tag><marker id="system_info_off_heap_message_queue"><c>off_heap_message_queue</c></marker></tag>
+ <tag><marker id="system_info_message_queue_data"><c>message_queue_data</c></marker></tag>
<item>
- <p>Returns the default value of the <c>off_heap_message_queue</c>
- process flag which is either <c>true</c> or <c>false</c>. This
- default is set by the <c>erl</c> command line argument
- <seealso marker="erl#+xohmq"><c>+xohmq</c></seealso>. For more information on the
- <c>off_heap_message_queue</c> process flag, see documentation of
- <seealso marker="#process_flag_off_heap_message_queue"><c>process_flag(off_heap_message_queue,
- OHMQ)</c></seealso>.</p>
+ <p>Returns the default value of the <c>message_queue_data</c>
+ process flag which is either <c>off_heap</c>, <c>on_heap</c>, or <c>mixed</c>.
+ This default is set by the <c>erl</c> command line argument
+ <seealso marker="erl#+xmqd"><c>+xmqd</c></seealso>. For more information on the
+ <c>message_queue_data</c> process flag, see documentation of
+ <seealso marker="#process_flag_message_queue_data"><c>process_flag(message_queue_data,
+ MQD)</c></seealso>.</p>
</item>
<tag><marker id="system_info_otp_release"><c>otp_release</c></marker></tag>
<item>
diff --git a/erts/doc/src/init.xml b/erts/doc/src/init.xml
index fe26df61f7..2a33096d04 100644
--- a/erts/doc/src/init.xml
+++ b/erts/doc/src/init.xml
@@ -247,10 +247,7 @@
<c>Expr</c> during system initialization. If any of these
steps fail (syntax error, parse error or exception during
evaluation), Erlang stops with an error message. Here is an
- example that seeds the random number generator:</p>
- <pre>
-% <input>erl -eval '{X,Y,Z} = now(), random:seed(X,Y,Z).'</input></pre>
- <p>This example uses Erlang as a hexadecimal calculator:</p>
+ example that uses Erlang as a hexadecimal calculator:</p>
<pre>
% <input>erl -noshell -eval 'R = 16#1F+16#A0, io:format("~.16B~n", [R])' \\</input>
<input>-s erlang halt</input>
diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml
index f27e73b9d3..a726cc7b97 100644
--- a/erts/doc/src/notes.xml
+++ b/erts/doc/src/notes.xml
@@ -31,8 +31,134 @@
</header>
<p>This document describes the changes made to the ERTS application.</p>
-<section><title>Erts 7.1</title>
+<section><title>Erts 7.2.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Revert "Fix erroneous splitting of emulator path"</p>
+ <p>
+ Own Id: OTP-13202</p>
+ </item>
+ <item>
+ <p>
+ Fix HiPE enabled emulator for FreeBSD.</p>
+ <p>
+ Own Id: OTP-13204 Aux Id: pr926 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
+<section><title>Erts 7.2</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Small documentation fixes</p>
+ <p>
+ Own Id: OTP-13017</p>
+ </item>
+ <item>
+ <p>
+ Fix memory corruption bug caused by disabling
+ distribution and then re-enable distribution with a node
+ name that has previously been used by a remote node.</p>
+ <p>
+ Own Id: OTP-13076 Aux Id: seq12959 </p>
+ </item>
+ <item>
+ <p>
+ Renamed variables with name bool as Visual Studio 2015
+ now treats this is a keyword.</p>
+ <p>
+ Own Id: OTP-13079</p>
+ </item>
+ <item>
+ <p><c>erl_prim_loader</c> has not supported custom
+ loaders for several releases. In the documentation for
+ <c>erl_prim_loader</c>, all references to custom loaders
+ have now been removed.</p>
+ <p>
+ Own Id: OTP-13102</p>
+ </item>
+ <item>
+ <p>
+ Fixed compilation of erts together with libc versions
+ that do not define __uint32_t.</p>
+ <p>
+ Own Id: OTP-13105</p>
+ </item>
+ <item>
+ <p>
+ erl -make now returns non-zero exit codes on failure</p>
+ <p>
+ Own Id: OTP-13107</p>
+ </item>
+ <item>
+ <p>
+ Fix crash on init:restart in embedded mode caused by
+ on_load handler process not being relaunched leading to
+ load failure for modules such as crypto and asn1rt_nif
+ that need it to be present for correct NIF loading.</p>
+ <p>
+ Own Id: OTP-13115</p>
+ </item>
+ <item>
+ <p>
+ Fix maps decode in erlang:binary_to_term/1</p>
+ <p>Decoding a term with a large (HAMT) map in an small
+ (FLAT) map could cause a critical error if the external
+ format was not produced by beam.</p>
+ <p>
+ Own Id: OTP-13125</p>
+ </item>
+ <item>
+ <p>
+ Fix very rare bug in GC when big maps with a lot of hash
+ collisions from a remote node are waiting in inner
+ message queue.</p>
+ <p>
+ Own Id: OTP-13146</p>
+ </item>
+ <item>
+ <p>
+ Fixed a bug that could cause a crash dump to become
+ almost empty.</p>
+ <p>
+ Own Id: OTP-13150</p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p> Updated the xmllint target to just check the xml
+ files with real documentation content.<br/> Corrected
+ some errors and added some missing target in the DTD's.
+ </p>
+ <p>
+ Own Id: OTP-13026</p>
+ </item>
+ <item>
+ <p>
+ Add function enif_getenv to read OS environment variables
+ in a portable way from NIFs.</p>
+ <p>
+ Own Id: OTP-13147</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
+<section><title>Erts 7.1</title>
<section><title>Fixed Bugs and Malfunctions</title>
<list>
<item>
@@ -981,6 +1107,42 @@
</section>
+<section><title>Erts 6.4.1.5</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fixed a bug that could cause a crash dump to become
+ almost empty.</p>
+ <p>
+ Own Id: OTP-13150</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
+<section><title>Erts 6.4.1.4</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ The 'raw' socket option could not be used multiple times
+ in one call to any e.g gen_tcp function because only one
+ of the occurrences were used. This bug has been fixed,
+ and also a small bug concerning propagating error codes
+ from within inet:setopts/2.</p>
+ <p>
+ Own Id: OTP-11482 Aux Id: seq12872 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
+
<section><title>Erts 6.4.1</title>
<section><title>Fixed Bugs and Malfunctions</title>
diff --git a/erts/emulator/Makefile.in b/erts/emulator/Makefile.in
index c5080d5b5d..8cf435905b 100644
--- a/erts/emulator/Makefile.in
+++ b/erts/emulator/Makefile.in
@@ -317,7 +317,7 @@ else
CS_CFLAGS = $(CS_CFLAGS_)
endif
CS_LDFLAGS = $(LDFLAGS)
-CS_LIBS = -L../lib/internal/$(TARGET) -lerts_internal$(TYPEMARKER) @ERTS_INTERNAL_X_LIBS@
+CS_LIBS = -L../lib/internal/$(TARGET) -lerts_internal$(TYPEMARKER) @ERTS_INTERNAL_X_LIBS@ @SOCKET_LIBS@
LIBS += @TERMCAP_LIB@ -L../lib/internal/$(TARGET) @ERTS_INTERNAL_X_LIBS@
@@ -398,7 +398,7 @@ EMULATOR_EXECUTABLE = beam$(TF_MARKER).dll
else
EMULATOR_EXECUTABLE = beam$(TF_MARKER)
endif
-CS_EXECUTABLE = child_setup$(TYPEMARKER)
+CS_EXECUTABLE = erl_child_setup$(TYPEMARKER)
# ----------------------------------------------------------------------
@@ -690,11 +690,11 @@ $(OBJDIR)/%.o: drivers/$(ERLANG_OSTYPE)/%.c
# ----------------------------------------------------------------------
# Specials
#
-CS_SRC = sys/$(ERLANG_OSTYPE)/erl_child_setup.c
+CS_OBJ = $(OBJDIR)/erl_child_setup.o $(OBJDIR)/sys_uds.o $(OBJDIR)/hash.o
-$(BINDIR)/$(CS_EXECUTABLE): $(TTF_DIR)/GENERATED $(PRELOAD_SRC) $(CS_SRC) $(ERTS_LIB)
- $(ld_verbose)$(CS_PURIFY) $(CC) $(CS_LDFLAGS) -o $(BINDIR)/$(CS_EXECUTABLE) \
- $(CS_CFLAGS) $(COMMON_INCLUDES) $(CS_SRC) $(CS_LIBS)
+$(BINDIR)/$(CS_EXECUTABLE): $(TTF_DIR)/GENERATED $(PRELOAD_SRC) $(CS_OBJ) $(ERTS_LIB)
+ $(ld_verbose)$(CS_PURIFY) $(LD) $(CS_LDFLAGS) -o $(BINDIR)/$(CS_EXECUTABLE) \
+ $(CS_CFLAGS) $(COMMON_INCLUDES) $(CS_OBJ) $(CS_LIBS)
$(OBJDIR)/%.kp.o: sys/common/%.c
$(V_CC) -DERTS_KERNEL_POLL_VERSION $(subst -O2, $(GEN_OPT_FLGS), $(CFLAGS)) $(INCLUDES) -c $< -o $@
@@ -798,6 +798,8 @@ OS_OBJS = \
else
OS_OBJS = \
$(OBJDIR)/sys.o \
+ $(OBJDIR)/sys_drivers.o \
+ $(OBJDIR)/sys_uds.o \
$(OBJDIR)/driver_tab.o \
$(OBJDIR)/unix_efile.o \
$(OBJDIR)/gzio.o \
diff --git a/erts/emulator/beam/atom.c b/erts/emulator/beam/atom.c
index fe91134ef4..fd2adac676 100644
--- a/erts/emulator/beam/atom.c
+++ b/erts/emulator/beam/atom.c
@@ -435,6 +435,9 @@ init_atom_table(void)
f.cmp = (HCMP_FUN) atom_cmp;
f.alloc = (HALLOC_FUN) atom_alloc;
f.free = (HFREE_FUN) atom_free;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
atom_text_pos = NULL;
atom_text_end = NULL;
diff --git a/erts/emulator/beam/atom.h b/erts/emulator/beam/atom.h
index ead56c83d8..2c002ca92f 100644
--- a/erts/emulator/beam/atom.h
+++ b/erts/emulator/beam/atom.h
@@ -129,6 +129,7 @@ typedef enum {
(erts_is_atom_utf8_bytes((byte *) LSTR, sizeof(LSTR) - 1, (TERM)))
#define ERTS_DECL_AM(S) Eterm AM_ ## S = am_atom_put(#S, sizeof(#S) - 1)
#define ERTS_INIT_AM(S) AM_ ## S = am_atom_put(#S, sizeof(#S) - 1)
+#define ERTS_MAKE_AM(Str) am_atom_put(Str, sizeof(Str) - 1)
int atom_table_size(void); /* number of elements */
int atom_table_sz(void); /* table size in bytes, excluding stored objects */
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index ea04495574..13c2a0f8f9 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -209,6 +209,7 @@ atom dsend_continue_trap
atom dunlink
atom duplicate_bag
atom dupnames
+atom einval
atom elib_malloc
atom emulator
atom enable_trace
@@ -350,6 +351,7 @@ atom memory_internal
atom memory_types
atom message
atom message_binary
+atom message_queue_data
atom message_queue_len
atom messages
atom merge_trap
@@ -361,6 +363,7 @@ atom min_heap_size
atom min_bin_vheap_size
atom minor_version
atom Minus='-'
+atom mixed
atom module
atom module_info
atom monitored_by
@@ -423,11 +426,12 @@ atom notify
atom notsup
atom nouse_stdio
atom objects
-atom off_heap_message_queue
+atom off_heap
atom offset
atom ok
atom old_heap_block_size
atom old_heap_size
+atom on_heap
atom on_load
atom open
atom open_error
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 6b6c066211..c925a8c812 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -837,10 +837,10 @@ check_process_code(Process* rp, Module* modp, int allow_gc, int *redsp)
if (check_mod_funs(rp, &hfrag->off_heap, mod_start, mod_size))
return am_true;
/* Should not contain any constants... */
- ASSERT(!any_heap_ref_ptrs(&hfrag->mem[0],
- &hfrag->mem[hfrag->used_size],
- mod_start,
- mod_size));
+ ASSERT(!any_heap_refs(&hfrag->mem[0],
+ &hfrag->mem[hfrag->used_size],
+ mod_start,
+ mod_size));
}
}
@@ -881,7 +881,7 @@ check_process_code(Process* rp, Module* modp, int allow_gc, int *redsp)
hp = &hfrag->mem[0];
hp_end = &hfrag->mem[hfrag->used_size];
- if (any_heap_ref_ptrs(hp, hp_end, mod_start, lit_bsize))
+ if (any_heap_refs(hp, hp_end, mod_start, lit_bsize))
goto try_literal_gc;
}
@@ -902,7 +902,7 @@ check_process_code(Process* rp, Module* modp, int allow_gc, int *redsp)
hp = &hfrag->mem[0];
hp_end = &hfrag->mem[hfrag->used_size];
- ASSERT(!any_heap_ref_ptrs(hp, hp_end, mod_start, lit_bsize));
+ ASSERT(!any_heap_refs(hp, hp_end, mod_start, lit_bsize));
}
}
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index 1a4133bceb..4d7b00b032 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -1843,8 +1843,8 @@ void process_main(void)
* in the queue. This since messages with data outside
* the heap will be corrupted by a GC.
*/
- ASSERT(!(c_p->flags & F_DISABLE_GC));
- c_p->flags |= F_DISABLE_GC;
+ ASSERT(!(c_p->flags & F_DELAY_GC));
+ c_p->flags |= F_DELAY_GC;
loop_rec__:
PROCESS_MAIN_CHK_LOCKS(c_p);
@@ -1858,7 +1858,7 @@ void process_main(void)
if (ERTS_PROC_PENDING_EXIT(c_p)) {
erts_smp_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
SWAPOUT;
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
goto do_schedule; /* Will be rescheduled for exit */
}
ERTS_SMP_MSGQ_MV_INQ2PRIVQ(c_p);
@@ -1868,7 +1868,7 @@ void process_main(void)
else
#endif
{
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
SET_I((BeamInstr *) Arg(0));
Goto(*I); /* Jump to a wait or wait_timeout instruction */
}
@@ -1978,7 +1978,7 @@ void process_main(void)
CANCEL_TIMER(c_p);
erts_save_message_in_proc(c_p, msgp);
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
if (ERTS_IS_GC_DESIRED_INTERNAL(c_p, HTOP, E)) {
/*
@@ -2000,7 +2000,7 @@ void process_main(void)
*/
OpCase(loop_rec_end_f): {
- ASSERT(c_p->flags & F_DISABLE_GC);
+ ASSERT(c_p->flags & F_DELAY_GC);
SET_I((BeamInstr *) Arg(0));
SAVE_MESSAGE(c_p);
@@ -2009,7 +2009,7 @@ void process_main(void)
goto loop_rec__;
}
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
c_p->i = I;
SWAPOUT;
c_p->arity = 0;
@@ -3558,6 +3558,16 @@ do { \
StoreBifResult(1, result);
}
+ OpCase(i_get_hash_cId):
+ {
+ Eterm arg;
+ Eterm result;
+
+ GetArg1(0, arg);
+ result = erts_pd_hash_get_with_hx(c_p, Arg(1), arg);
+ StoreBifResult(2, result);
+ }
+
{
Eterm case_end_val;
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 5db971b6af..d367cce212 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -4284,6 +4284,53 @@ gen_get_map_element(LoaderState* stp, GenOpArg Fail, GenOpArg Src,
return op;
}
+static int
+hash_internal_genop_arg(LoaderState* stp, GenOpArg Key, Uint32* hx)
+{
+ switch (Key.type) {
+ case TAG_a:
+ *hx = atom_tab(atom_val(Key.val))->slot.bucket.hvalue;
+ return 1;
+ case TAG_i:
+ *hx = Key.val;
+ return 1;
+ case TAG_n:
+ *hx = make_internal_hash(NIL);
+ return 1;
+ case TAG_q:
+ *hx = make_internal_hash(stp->literals[Key.val].term);
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+
+static GenOp*
+gen_get(LoaderState* stp, GenOpArg Src, GenOpArg Dst)
+{
+ GenOp* op;
+ Uint32 hx = 0;
+
+ NEW_GENOP(stp, op);
+ op->next = NULL;
+ if (hash_internal_genop_arg(stp, Src, &hx)) {
+ op->arity = 3;
+ op->op = genop_i_get_hash_3;
+ op->a[0] = Src;
+ op->a[1].type = TAG_u;
+ op->a[1].val = (BeamInstr) hx;
+ op->a[2] = Dst;
+ } else {
+ op->arity = 2;
+ op->op = genop_i_get_2;
+ op->a[0] = Src;
+ op->a[1] = Dst;
+ }
+ return op;
+}
+
+
static GenOp*
gen_get_map_elements(LoaderState* stp, GenOpArg Fail, GenOpArg Src,
GenOpArg Size, GenOpArg* Rest)
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index 886b19fe6e..bb9165cd79 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -910,13 +910,22 @@ BIF_RETTYPE spawn_opt_1(BIF_ALIST_1)
so.priority = PRIORITY_LOW;
else
goto error;
- } else if (arg == am_off_heap_message_queue) {
- if (val == am_true)
- so.flags |= SPO_OFF_HEAP_MSGQ;
- else if (val == am_false)
+ } else if (arg == am_message_queue_data) {
+ switch (val) {
+ case am_mixed:
+ so.flags &= ~(SPO_OFF_HEAP_MSGQ|SPO_ON_HEAP_MSGQ);
+ break;
+ case am_on_heap:
so.flags &= ~SPO_OFF_HEAP_MSGQ;
- else
+ so.flags |= SPO_ON_HEAP_MSGQ;
+ break;
+ case am_off_heap:
+ so.flags &= ~SPO_ON_HEAP_MSGQ;
+ so.flags |= SPO_OFF_HEAP_MSGQ;
+ break;
+ default:
goto error;
+ }
} else if (arg == am_min_heap_size && is_small(val)) {
Sint min_heap_size = signed_val(val);
if (min_heap_size < 0) {
@@ -1695,15 +1704,10 @@ BIF_RETTYPE process_flag_2(BIF_ALIST_2)
}
BIF_RET(old_value);
}
- else if (BIF_ARG_1 == am_off_heap_message_queue) {
- int enable;
- if (BIF_ARG_2 == am_true)
- enable = 1;
- else if (BIF_ARG_2 == am_false)
- enable = 0;
- else
+ else if (BIF_ARG_1 == am_message_queue_data) {
+ old_value = erts_change_message_queue_management(BIF_P, BIF_ARG_2);
+ if (is_non_value(old_value))
goto error;
- old_value = erts_change_off_heap_message_queue_state(BIF_P, enable);
BIF_RET(old_value);
}
else if (BIF_ARG_1 == am_sensitive) {
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab
index c49a3ff313..0aee8681c6 100644
--- a/erts/emulator/beam/bif.tab
+++ b/erts/emulator/beam/bif.tab
@@ -115,7 +115,7 @@ bif erlang:time_offset/0
bif erlang:time_offset/1
bif erlang:timestamp/0
-bif erlang:open_port/2
+bif erts_internal:open_port/2
bif erlang:pid_to_list/1
bif erlang:ports/0
@@ -167,7 +167,7 @@ bif erts_internal:request_system_task/3
bif erts_internal:check_process_code/2
bif erts_internal:map_to_tuple_keys/1
-bif erts_internal:map_type/1
+bif erts_internal:term_type/1
bif erts_internal:map_hashmap_children/1
bif erts_internal:time_unit/0
diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index d5443476ec..e31ef29562 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -1136,7 +1136,6 @@ int erts_net_message(Port *prt,
Process* rp;
DeclareTmpHeapNoproc(ctl_default,DIST_CTL_DEFAULT_SIZE);
Eterm* ctl = ctl_default;
- ErlOffHeap off_heap;
ErtsHeapFactory factory;
Eterm* hp;
Sint type;
@@ -1151,9 +1150,6 @@ int erts_net_message(Port *prt,
#endif
UseTmpHeapNoproc(DIST_CTL_DEFAULT_SIZE);
- /* Thanks to Luke Gorrie */
- off_heap.first = NULL;
- off_heap.overhead = 0;
ERTS_SMP_CHK_NO_PROC_LOCKS;
@@ -1214,15 +1210,15 @@ int erts_net_message(Port *prt,
}
hp = ctl;
- erts_factory_static_init(&factory, ctl, ctl_len, &off_heap);
+ erts_factory_tmp_init(&factory, ctl, ctl_len, ERTS_ALC_T_DCTRL_BUF);
arg = erts_decode_dist_ext(&factory, &ede);
if (is_non_value(arg)) {
#ifdef ERTS_DIST_MSG_DBG
- erts_fprintf(stderr, "DIST MSG DEBUG: erts_dist_ext_size(CTL) failed:\n");
+ erts_fprintf(stderr, "DIST MSG DEBUG: erts_decode_dist_ext(CTL) failed:\n");
bw(buf, orig_len);
#endif
PURIFY_MSG("data error");
- goto data_error;
+ goto decode_error;
}
ctl_len = t - buf;
@@ -1702,7 +1698,7 @@ int erts_net_message(Port *prt,
goto invalid_message;
}
- erts_cleanup_offheap(&off_heap);
+ erts_factory_close(&factory);
if (ctl != ctl_default) {
erts_free(ERTS_ALC_T_DCTRL_BUF, (void *) ctl);
}
@@ -1715,12 +1711,13 @@ int erts_net_message(Port *prt,
erts_dsprintf(dsbufp, "Invalid distribution message: %.200T", arg);
erts_send_error_to_logger_nogl(dsbufp);
}
- data_error:
+decode_error:
PURIFY_MSG("data error");
- erts_cleanup_offheap(&off_heap);
+ erts_factory_close(&factory);
if (ctl != ctl_default) {
erts_free(ERTS_ALC_T_DCTRL_BUF, (void *) ctl);
}
+data_error:
UnUseTmpHeapNoproc(DIST_CTL_DEFAULT_SIZE);
erts_deliver_port_exit(prt, dep->cid, am_killed, 0);
ERTS_SMP_CHK_NO_PROC_LOCKS;
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index 99458b4268..5544712e8d 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -292,7 +292,7 @@ static void
set_default_literal_alloc_opts(struct au_init *ip)
{
SET_DEFAULT_ALLOC_OPTS(ip);
- ip->enable = AU_ALLOC_DEFAULT_ENABLE(1);
+ ip->enable = 1;
ip->thr_spec = 0;
ip->atype = BESTFIT;
ip->init.bf.ao = 1;
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 82c2aa4b9e..f952f937ce 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -592,7 +592,7 @@ static Eterm pi_args[] = {
am_min_bin_vheap_size,
am_current_location,
am_current_stacktrace,
- am_off_heap_message_queue
+ am_message_queue_data
};
#define ERTS_PI_ARGS ((int) (sizeof(pi_args)/sizeof(Eterm)))
@@ -640,7 +640,7 @@ pi_arg2ix(Eterm arg)
case am_min_bin_vheap_size: return 28;
case am_current_location: return 29;
case am_current_stacktrace: return 30;
- case am_off_heap_message_queue: return 31;
+ case am_message_queue_data: return 31;
default: return -1;
}
}
@@ -1499,8 +1499,22 @@ process_info_aux(Process *BIF_P,
break;
}
- case am_off_heap_message_queue:
- res = BIF_P->flags & F_OFF_HEAP_MSGQ ? am_true : am_false;
+ case am_message_queue_data:
+ switch (rp->flags & (F_OFF_HEAP_MSGQ|F_ON_HEAP_MSGQ)) {
+ case F_OFF_HEAP_MSGQ:
+ res = am_off_heap;
+ break;
+ case F_ON_HEAP_MSGQ:
+ res = am_on_heap;
+ break;
+ case 0:
+ res = am_mixed;
+ break;
+ default:
+ res = am_error;
+ ERTS_INTERNAL_ERROR("Inconsistent message queue management state");
+ break;
+ }
hp = HAlloc(BIF_P, 3);
break;
@@ -2665,9 +2679,18 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
BIF_RET(am_true);
}
#endif
- else if (BIF_ARG_1 == am_off_heap_message_queue) {
- BIF_RET(erts_default_spo_flags & SPO_OFF_HEAP_MSGQ
- ? am_true : am_false);
+ else if (BIF_ARG_1 == am_message_queue_data) {
+ switch (erts_default_spo_flags & (SPO_ON_HEAP_MSGQ|SPO_OFF_HEAP_MSGQ)) {
+ case SPO_OFF_HEAP_MSGQ:
+ BIF_RET(am_off_heap);
+ case SPO_ON_HEAP_MSGQ:
+ BIF_RET(am_on_heap);
+ case 0:
+ BIF_RET(am_mixed);
+ default:
+ ERTS_INTERNAL_ERROR("Inconsistent message queue management state");
+ BIF_RET(am_error);
+ }
}
else if (ERTS_IS_ATOM_STR("compile_info",BIF_ARG_1)) {
Uint sz;
diff --git a/erts/emulator/beam/erl_bif_port.c b/erts/emulator/beam/erl_bif_port.c
index e47d7bcbbb..839abd0424 100644
--- a/erts/emulator/beam/erl_bif_port.c
+++ b/erts/emulator/beam/erl_bif_port.c
@@ -41,6 +41,7 @@
#include "external.h"
#include "packet_parser.h"
#include "erl_bits.h"
+#include "erl_bif_unique.h"
#include "dtrace-wrapper.h"
static Port *open_port(Process* p, Eterm name, Eterm settings, int *err_typep, int *err_nump);
@@ -50,10 +51,10 @@ static void free_args(char **);
char *erts_default_arg0 = "default";
-BIF_RETTYPE open_port_2(BIF_ALIST_2)
+BIF_RETTYPE erts_internal_open_port_2(BIF_ALIST_2)
{
Port *port;
- Eterm port_id;
+ Eterm res;
char *str;
int err_type, err_num;
@@ -61,27 +62,58 @@ BIF_RETTYPE open_port_2(BIF_ALIST_2)
if (!port) {
if (err_type == -3) {
ASSERT(err_num == BADARG || err_num == SYSTEM_LIMIT);
- BIF_ERROR(BIF_P, err_num);
+ if (err_num == BADARG)
+ res = am_badarg;
+ else if (err_num == SYSTEM_LIMIT)
+ res = am_system_limit;
+ else
+ /* this is only here to silence gcc, it should not happen */
+ BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
} else if (err_type == -2) {
str = erl_errno_id(err_num);
+ res = erts_atom_put((byte *) str, strlen(str), ERTS_ATOM_ENC_LATIN1, 1);
} else {
- str = "einval";
+ res = am_einval;
}
- BIF_P->fvalue = erts_atom_put((byte *) str, strlen(str), ERTS_ATOM_ENC_LATIN1, 1);
- BIF_ERROR(BIF_P, EXC_ERROR);
- }
+ BIF_RET(res);
+ }
+
+ if (port->drv_ptr->flags & ERL_DRV_FLAG_USE_INIT_ACK) {
+ /* Copied from erl_port_task.c */
+ port->async_open_port = erts_alloc(ERTS_ALC_T_PRTSD,
+ sizeof(*port->async_open_port));
+ erts_make_ref_in_array(port->async_open_port->ref);
+ port->async_open_port->to = BIF_P->common.id;
+
+ erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCKS_MSG_RECEIVE | ERTS_PROC_LOCK_LINK);
+ if (ERTS_PROC_PENDING_EXIT(BIF_P)) {
+ /* need to exit caller instead */
+ erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCKS_MSG_RECEIVE | ERTS_PROC_LOCK_LINK);
+ KILL_CATCHES(BIF_P);
+ BIF_P->freason = EXC_EXIT;
+ erts_port_release(port);
+ BIF_RET(am_badarg);
+ }
+
+ ERTS_SMP_MSGQ_MV_INQ2PRIVQ(BIF_P);
+ BIF_P->msg.save = BIF_P->msg.last;
- erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK);
+ erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCKS_MSG_RECEIVE);
+
+ res = erts_proc_store_ref(BIF_P, port->async_open_port->ref);
+ } else {
+ res = port->common.id;
+ erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK);
+ }
- port_id = port->common.id;
erts_add_link(&ERTS_P_LINKS(port), LINK_PID, BIF_P->common.id);
- erts_add_link(&ERTS_P_LINKS(BIF_P), LINK_PID, port_id);
+ erts_add_link(&ERTS_P_LINKS(BIF_P), LINK_PID, port->common.id);
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
erts_port_release(port);
- BIF_RET(port_id);
+ BIF_RET(res);
}
static ERTS_INLINE Port *
diff --git a/erts/emulator/beam/erl_driver.h b/erts/emulator/beam/erl_driver.h
index 1093366e08..bda4d5d1c6 100644
--- a/erts/emulator/beam/erl_driver.h
+++ b/erts/emulator/beam/erl_driver.h
@@ -125,7 +125,7 @@ typedef struct {
#define ERL_DRV_EXTENDED_MARKER (0xfeeeeeed)
#define ERL_DRV_EXTENDED_MAJOR_VERSION 3
-#define ERL_DRV_EXTENDED_MINOR_VERSION 2
+#define ERL_DRV_EXTENDED_MINOR_VERSION 3
/*
* The emulator will refuse to load a driver with a major version
@@ -163,6 +163,7 @@ typedef struct {
#define ERL_DRV_FLAG_USE_PORT_LOCKING (1 << 0)
#define ERL_DRV_FLAG_SOFT_BUSY (1 << 1)
#define ERL_DRV_FLAG_NO_BUSY_MSGQ (1 << 2)
+#define ERL_DRV_FLAG_USE_INIT_ACK (1 << 3)
/*
* Integer types
@@ -690,6 +691,12 @@ EXTERN char *driver_dl_error(void);
EXTERN int erl_drv_putenv(const char *key, char *value);
EXTERN int erl_drv_getenv(const char *key, char *value, size_t *value_size);
+/* spawn start init ack */
+EXTERN void erl_drv_init_ack(ErlDrvPort ix, ErlDrvData res);
+
+/* set the pid seen in port_info */
+EXTERN void erl_drv_set_os_pid(ErlDrvPort ix, ErlDrvSInt pid);
+
#endif /* !ERL_DRIVER_TYPES_ONLY */
#ifdef WIN32_DYNAMIC_ERL_DRIVER
diff --git a/erts/emulator/beam/erl_fun.c b/erts/emulator/beam/erl_fun.c
index 4268e2d40a..cff476694c 100644
--- a/erts/emulator/beam/erl_fun.c
+++ b/erts/emulator/beam/erl_fun.c
@@ -66,6 +66,9 @@ erts_init_fun_table(void)
f.cmp = (HCMP_FUN) fun_cmp;
f.alloc = (HALLOC_FUN) fun_alloc;
f.free = (HFREE_FUN) fun_free;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
hash_init(ERTS_ALC_T_FUN_TABLE, &erts_fun_table, "fun_table", 16, f);
}
diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c
index c50756d56b..f1962e5cac 100644
--- a/erts/emulator/beam/erl_gc.c
+++ b/erts/emulator/beam/erl_gc.c
@@ -145,6 +145,7 @@ static void offset_rootset(Process *p, Sint offs, char* area, Uint area_size,
Eterm* objv, int nobj);
static void offset_off_heap(Process* p, Sint offs, char* area, Uint area_size);
static void offset_mqueue(Process *p, Sint offs, char* area, Uint area_size);
+static void move_msgq_to_heap(Process *p);
static void init_gc_info(ErtsGCInfo *gcip);
@@ -440,8 +441,15 @@ delay_garbage_collection(Process *p, ErlHeapFragment *live_hf_end, int need)
ERTS_HOLE_CHECK(p);
- if (p->live_hf_end == ERTS_INVALID_HFRAG_PTR)
+ if ((p->flags & F_DISABLE_GC)
+ && p->live_hf_end == ERTS_INVALID_HFRAG_PTR) {
+ /*
+ * A BIF yielded with disabled GC. Remember
+ * heap fragments created by the BIF until we
+ * do next GC.
+ */
p->live_hf_end = live_hf_end;
+ }
if (need == 0)
return 1;
@@ -513,6 +521,14 @@ young_gen_usage(Process *p)
Eterm *aheap;
hsz = p->mbuf_sz;
+
+ if (p->flags & F_ON_HEAP_MSGQ) {
+ ErtsMessage *mp;
+ for (mp = p->msg.first; mp; mp = mp->next)
+ if (mp->data.attached)
+ hsz += erts_msg_attached_data_size(mp);
+ }
+
aheap = p->abandoned_heap;
if (!aheap)
hsz += p->htop - p->heap;
@@ -564,10 +580,12 @@ garbage_collect(Process* p, ErlHeapFragment *live_hf_end,
DTRACE_CHARBUF(pidbuf, DTRACE_TERM_BUF_SIZE);
#endif
- if (p->flags & F_DISABLE_GC)
+ if (p->flags & (F_DISABLE_GC|F_DELAY_GC))
return delay_garbage_collection(p, live_hf_end, need);
- if (p->live_hf_end != ERTS_INVALID_HFRAG_PTR)
+ if (p->abandoned_heap)
+ live_hf_end = ERTS_INVALID_HFRAG_PTR;
+ else if (p->live_hf_end != ERTS_INVALID_HFRAG_PTR)
live_hf_end = p->live_hf_end;
esdp = erts_get_scheduler_data();
@@ -734,6 +752,12 @@ erts_garbage_collect_hibernate(Process* p)
p->arg_reg,
p->arity);
+ ERTS_HEAP_FREE(ERTS_ALC_T_HEAP,
+ (p->abandoned_heap
+ ? p->abandoned_heap
+ : p->heap),
+ p->heap_sz * sizeof(Eterm));
+
p->heap = heap;
p->high_water = htop;
p->htop = htop;
@@ -1025,10 +1049,13 @@ minor_collection(Process* p, ErlHeapFragment *live_hf_end,
do_minor(p, live_hf_end, (char *) mature, mature_size*sizeof(Eterm),
new_sz, objv, nobj);
+ if (p->flags & F_ON_HEAP_MSGQ)
+ move_msgq_to_heap(p);
+
new_mature = p->old_htop - prev_old_htop;
size_after = new_mature;
- size_after += HEAP_TOP(p) - HEAP_START(p);
+ size_after += HEAP_TOP(p) - HEAP_START(p) + p->mbuf_sz;
*recl += (size_before - size_after);
ErtsGcQuickSanityCheck(p);
@@ -1441,7 +1468,7 @@ major_collection(Process* p, ErlHeapFragment *live_hf_end,
(p->abandoned_heap
? p->abandoned_heap
: HEAP_START(p)),
- (HEAP_END(p) - HEAP_START(p)) * sizeof(Eterm));
+ p->heap_sz * sizeof(Eterm));
p->abandoned_heap = NULL;
p->flags &= ~F_ABANDONED_HEAP_USE;
HEAP_START(p) = n_heap;
@@ -1452,9 +1479,14 @@ major_collection(Process* p, ErlHeapFragment *live_hf_end,
HIGH_WATER(p) = HEAP_TOP(p);
+ remove_message_buffers(p);
+
+ if (p->flags & F_ON_HEAP_MSGQ)
+ move_msgq_to_heap(p);
+
ErtsGcQuickSanityCheck(p);
- size_after = HEAP_TOP(p) - HEAP_START(p);
+ size_after = HEAP_TOP(p) - HEAP_START(p) + p->mbuf_sz;
*recl += size_before - size_after;
adjusted = adjust_after_fullsweep(p, need, objv, nobj);
@@ -1462,8 +1494,6 @@ major_collection(Process* p, ErlHeapFragment *live_hf_end,
#ifdef HARDDEBUG
disallow_heap_frag_ref_in_heap(p);
#endif
- remove_message_buffers(p);
-
ErtsGcQuickSanityCheck(p);
return gc_cost(size_after, adjusted ? size_after : 0);
@@ -1991,6 +2021,173 @@ collect_live_heap_frags(Process* p, ErlHeapFragment *live_hf_end,
return n_htop;
}
+static ERTS_INLINE void
+copy_one_frag(Eterm** hpp, ErlOffHeap* off_heap,
+ ErlHeapFragment *bp, Eterm *refs, int nrefs)
+{
+ Uint sz;
+ int i;
+ Sint offs;
+ struct erl_off_heap_header* oh;
+ Eterm *fhp, *hp;
+
+ OH_OVERHEAD(off_heap, bp->off_heap.overhead);
+ sz = bp->used_size;
+
+ fhp = bp->mem;
+ hp = *hpp;
+ offs = hp - fhp;
+
+ oh = NULL;
+ while (sz--) {
+ Uint cpy_sz;
+ Eterm val = *fhp++;
+
+ switch (primary_tag(val)) {
+ case TAG_PRIMARY_IMMED1:
+ *hp++ = val;
+ break;
+ case TAG_PRIMARY_LIST:
+ case TAG_PRIMARY_BOXED:
+ *hp++ = offset_ptr(val, offs);
+ break;
+ case TAG_PRIMARY_HEADER:
+ *hp++ = val;
+ switch (val & _HEADER_SUBTAG_MASK) {
+ case ARITYVAL_SUBTAG:
+ break;
+ case REFC_BINARY_SUBTAG:
+ case FUN_SUBTAG:
+ case EXTERNAL_PID_SUBTAG:
+ case EXTERNAL_PORT_SUBTAG:
+ case EXTERNAL_REF_SUBTAG:
+ oh = (struct erl_off_heap_header*) (hp-1);
+ cpy_sz = thing_arityval(val);
+ goto cpy_words;
+ default:
+ cpy_sz = header_arity(val);
+
+ cpy_words:
+ ASSERT(sz >= cpy_sz);
+ sz -= cpy_sz;
+ while (cpy_sz >= 8) {
+ cpy_sz -= 8;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ *hp++ = *fhp++;
+ }
+ switch (cpy_sz) {
+ case 7: *hp++ = *fhp++;
+ case 6: *hp++ = *fhp++;
+ case 5: *hp++ = *fhp++;
+ case 4: *hp++ = *fhp++;
+ case 3: *hp++ = *fhp++;
+ case 2: *hp++ = *fhp++;
+ case 1: *hp++ = *fhp++;
+ default: break;
+ }
+ if (oh) {
+ /* Add to offheap list */
+ oh->next = off_heap->first;
+ off_heap->first = oh;
+ ASSERT(*hpp <= (Eterm*)oh);
+ ASSERT(hp > (Eterm*)oh);
+ oh = NULL;
+ }
+ break;
+ }
+ break;
+ }
+ }
+
+ ASSERT(bp->used_size == hp - *hpp);
+ *hpp = hp;
+
+ for (i = 0; i < nrefs; i++) {
+ if (is_not_immed(refs[i]))
+ refs[i] = offset_ptr(refs[i], offs);
+ }
+ bp->off_heap.first = NULL;
+}
+
+static void
+move_msgq_to_heap(Process *p)
+{
+ ErtsMessage **mpp = &p->msg.first;
+
+ while (*mpp) {
+ ErtsMessage *mp = *mpp;
+
+ if (mp->data.attached) {
+ ErlHeapFragment *bp;
+ ErtsHeapFactory factory;
+
+ erts_factory_proc_prealloc_init(&factory, p,
+ erts_msg_attached_data_size(mp));
+
+ if (is_non_value(ERL_MESSAGE_TERM(mp))) {
+ if (mp->data.dist_ext) {
+ ASSERT(mp->data.dist_ext->heap_size >= 0);
+ if (is_not_nil(ERL_MESSAGE_TOKEN(mp))) {
+ bp = erts_dist_ext_trailer(mp->data.dist_ext);
+ ERL_MESSAGE_TOKEN(mp) = copy_struct(ERL_MESSAGE_TOKEN(mp),
+ bp->used_size,
+ &factory.hp,
+ factory.off_heap);
+ erts_cleanup_offheap(&bp->off_heap);
+ }
+ ERL_MESSAGE_TERM(mp) = erts_decode_dist_ext(&factory,
+ mp->data.dist_ext);
+ erts_free_dist_ext_copy(mp->data.dist_ext);
+ mp->data.dist_ext = NULL;
+ }
+ }
+ else {
+
+ if (mp->data.attached == ERTS_MSG_COMBINED_HFRAG)
+ bp = &mp->hfrag;
+ else
+ bp = mp->data.heap_frag;
+
+ if (bp->next)
+ erts_move_multi_frags(&factory.hp, factory.off_heap, bp,
+ mp->m, ERL_MESSAGE_REF_ARRAY_SZ, 0);
+ else
+ copy_one_frag(&factory.hp, factory.off_heap, bp,
+ mp->m, ERL_MESSAGE_REF_ARRAY_SZ);
+
+ if (mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
+ mp->data.heap_frag = NULL;
+ free_message_buffer(bp);
+ }
+ else {
+ ErtsMessage *tmp = erts_alloc_message(0, NULL);
+ sys_memcpy((void *) tmp->m, (void *) mp->m,
+ sizeof(Eterm)*ERL_MESSAGE_REF_ARRAY_SZ);
+ tmp->next = mp->next;
+ if (p->msg.save == &mp->next)
+ p->msg.save = &tmp->next;
+ if (p->msg.last == &mp->next)
+ p->msg.last = &tmp->next;
+ *mpp = tmp;
+ mp->next = NULL;
+ erts_cleanup_messages(mp);
+ mp = tmp;
+ }
+ }
+
+ erts_factory_close(&factory);
+ }
+
+ mpp = &(*mpp)->next;
+ }
+}
+
static Uint
setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset)
{
@@ -2080,9 +2277,8 @@ setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset)
case F_OFF_HEAP_MSGQ_CHNG:
case 0: {
/*
- * Off heap message queue disabled, i.e. we may
- * have references from the message queue to the
- * heap...
+ * We do not have off heap message queue enabled, i.e. we
+ * need to add message queue to rootset...
*/
ErtsMessage *mp;
@@ -2583,33 +2779,37 @@ offset_mqueue(Process *p, Sint offs, char* area, Uint area_size)
{
ErtsMessage* mp = p->msg.first;
- while (mp != NULL) {
- Eterm mesg = ERL_MESSAGE_TERM(mp);
- if (is_value(mesg)) {
- switch (primary_tag(mesg)) {
- case TAG_PRIMARY_LIST:
- case TAG_PRIMARY_BOXED:
- if (ErtsInArea(ptr_val(mesg), area, area_size)) {
- ERL_MESSAGE_TERM(mp) = offset_ptr(mesg, offs);
+ if ((p->flags & (F_OFF_HEAP_MSGQ|F_OFF_HEAP_MSGQ_CHNG)) != F_OFF_HEAP_MSGQ) {
+
+ while (mp != NULL) {
+ Eterm mesg = ERL_MESSAGE_TERM(mp);
+ if (is_value(mesg)) {
+ switch (primary_tag(mesg)) {
+ case TAG_PRIMARY_LIST:
+ case TAG_PRIMARY_BOXED:
+ if (ErtsInArea(ptr_val(mesg), area, area_size)) {
+ ERL_MESSAGE_TERM(mp) = offset_ptr(mesg, offs);
+ }
+ break;
}
- break;
}
- }
- mesg = ERL_MESSAGE_TOKEN(mp);
- if (is_boxed(mesg) && ErtsInArea(ptr_val(mesg), area, area_size)) {
- ERL_MESSAGE_TOKEN(mp) = offset_ptr(mesg, offs);
- }
+ mesg = ERL_MESSAGE_TOKEN(mp);
+ if (is_boxed(mesg) && ErtsInArea(ptr_val(mesg), area, area_size)) {
+ ERL_MESSAGE_TOKEN(mp) = offset_ptr(mesg, offs);
+ }
#ifdef USE_VM_PROBES
- mesg = ERL_MESSAGE_DT_UTAG(mp);
- if (is_boxed(mesg) && ErtsInArea(ptr_val(mesg), area, area_size)) {
- ERL_MESSAGE_DT_UTAG(mp) = offset_ptr(mesg, offs);
- }
+ mesg = ERL_MESSAGE_DT_UTAG(mp);
+ if (is_boxed(mesg) && ErtsInArea(ptr_val(mesg), area, area_size)) {
+ ERL_MESSAGE_DT_UTAG(mp) = offset_ptr(mesg, offs);
+ }
#endif
- ASSERT((is_nil(ERL_MESSAGE_TOKEN(mp)) ||
- is_tuple(ERL_MESSAGE_TOKEN(mp)) ||
- is_atom(ERL_MESSAGE_TOKEN(mp))));
- mp = mp->next;
+ ASSERT((is_nil(ERL_MESSAGE_TOKEN(mp)) ||
+ is_tuple(ERL_MESSAGE_TOKEN(mp)) ||
+ is_atom(ERL_MESSAGE_TOKEN(mp))));
+ mp = mp->next;
+ }
+
}
}
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 296cfdabc3..e3390c2769 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -388,6 +388,7 @@ erl_init(int ncpu,
erts_mseg_late_init(); /* Must be after timer (erts_init_time()) and thread
initializations */
#endif
+ erl_sys_late_init();
#ifdef HIPE
hipe_mode_switch_init(); /* Must be after init_load/beam_catches/init */
#endif
@@ -630,7 +631,8 @@ void erts_usage(void)
erts_fprintf(stderr, "-W<i|w|e> set error logger warnings mapping,\n");
erts_fprintf(stderr, " see error_logger documentation for details\n");
- erts_fprintf(stderr, "-xohmq bool set default off_heap_message_queue flag for processes\n");
+ erts_fprintf(stderr, "-xmqd val set default message queue data flag for processes,\n");
+ erts_fprintf(stderr, " valid values are: off_heap | on_heap | mixed\n");
erts_fprintf(stderr, "-zdbbl size set the distribution buffer busy limit in kilobytes\n");
erts_fprintf(stderr, " valid range is [1-%d]\n", INT_MAX/1024);
erts_fprintf(stderr, "-zdntgc time set delayed node table gc in seconds\n");
@@ -2020,15 +2022,21 @@ erl_start(int argc, char **argv)
case 'x': {
char *sub_param = argv[i]+2;
- if (has_prefix("ohmq", sub_param)) {
- arg = get_arg(sub_param+4, argv[i+1], &i);
- if (sys_strcmp(arg, "true") == 0)
- erts_default_spo_flags |= SPO_OFF_HEAP_MSGQ;
- else if (sys_strcmp(arg, "false") == 0)
+ if (has_prefix("mqd", sub_param)) {
+ arg = get_arg(sub_param+3, argv[i+1], &i);
+ if (sys_strcmp(arg, "mixed") == 0)
+ erts_default_spo_flags &= ~(SPO_ON_HEAP_MSGQ|SPO_OFF_HEAP_MSGQ);
+ else if (sys_strcmp(arg, "on_heap") == 0) {
erts_default_spo_flags &= ~SPO_OFF_HEAP_MSGQ;
+ erts_default_spo_flags |= SPO_ON_HEAP_MSGQ;
+ }
+ else if (sys_strcmp(arg, "off_heap") == 0) {
+ erts_default_spo_flags &= ~SPO_ON_HEAP_MSGQ;
+ erts_default_spo_flags |= SPO_OFF_HEAP_MSGQ;
+ }
else {
erts_fprintf(stderr,
- "Invalid off_heap_message_queue flag: %s\n", arg);
+ "Invalid message_queue_data flag: %s\n", arg);
erts_usage();
}
} else {
diff --git a/erts/emulator/beam/erl_lock_check.c b/erts/emulator/beam/erl_lock_check.c
index 84bee976ff..f7b4bd8041 100644
--- a/erts/emulator/beam/erl_lock_check.c
+++ b/erts/emulator/beam/erl_lock_check.c
@@ -113,9 +113,6 @@ static erts_lc_lock_order_t erts_lock_order[] = {
{ "environ", NULL },
#endif
{ "efile_drv", "address" },
-#if defined(ENABLE_CHILD_WAITER_THREAD) || defined(ERTS_SMP)
- { "child_status", NULL },
-#endif
{ "drv_ev_state_grow", NULL, },
{ "drv_ev_state", "address" },
{ "safe_hash", "address" },
diff --git a/erts/emulator/beam/erl_map.c b/erts/emulator/beam/erl_map.c
index 29b3024644..d0ffb11e79 100644
--- a/erts/emulator/beam/erl_map.c
+++ b/erts/emulator/beam/erl_map.c
@@ -2698,32 +2698,88 @@ BIF_RETTYPE erts_internal_map_to_tuple_keys_1(BIF_ALIST_1) {
}
/*
- * erts_internal:map_type/1
+ * erts_internal:term_type/1
*
* Used in erts_debug:size/1
*/
-BIF_RETTYPE erts_internal_map_type_1(BIF_ALIST_1) {
- DECL_AM(hashmap);
- DECL_AM(hashmap_node);
- DECL_AM(flatmap);
- if (is_map(BIF_ARG_1)) {
- Eterm hdr = *(boxed_val(BIF_ARG_1));
- ASSERT(is_header(hdr));
- switch (hdr & _HEADER_MAP_SUBTAG_MASK) {
- case HAMT_SUBTAG_HEAD_FLATMAP:
- BIF_RET(AM_flatmap);
- case HAMT_SUBTAG_HEAD_ARRAY:
- case HAMT_SUBTAG_HEAD_BITMAP:
- BIF_RET(AM_hashmap);
- case HAMT_SUBTAG_NODE_BITMAP:
- BIF_RET(AM_hashmap_node);
- default:
- erl_exit(1, "bad header");
+BIF_RETTYPE erts_internal_term_type_1(BIF_ALIST_1) {
+ Eterm obj = BIF_ARG_1;
+ switch (primary_tag(obj)) {
+ case TAG_PRIMARY_LIST:
+ BIF_RET(ERTS_MAKE_AM("list"));
+ case TAG_PRIMARY_BOXED: {
+ Eterm hdr = *boxed_val(obj);
+ ASSERT(is_header(hdr));
+ switch (hdr & _TAG_HEADER_MASK) {
+ case ARITYVAL_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("tuple"));
+ case EXPORT_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("export"));
+ case FUN_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("fun"));
+ case MAP_SUBTAG:
+ switch (MAP_HEADER_TYPE(hdr)) {
+ case MAP_HEADER_TAG_FLATMAP_HEAD :
+ BIF_RET(ERTS_MAKE_AM("flatmap"));
+ case MAP_HEADER_TAG_HAMT_HEAD_BITMAP :
+ case MAP_HEADER_TAG_HAMT_HEAD_ARRAY :
+ BIF_RET(ERTS_MAKE_AM("hashmap"));
+ case MAP_HEADER_TAG_HAMT_NODE_BITMAP :
+ BIF_RET(ERTS_MAKE_AM("hashmap_node"));
+ default:
+ erl_exit(ERTS_ABORT_EXIT, "term_type: bad map header type %d\n", MAP_HEADER_TYPE(hdr));
+ }
+ case REFC_BINARY_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("refc_binary"));
+ case HEAP_BINARY_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("heap_binary"));
+ case SUB_BINARY_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("sub_binary"));
+ case BIN_MATCHSTATE_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("matchstate"));
+ case POS_BIG_SUBTAG:
+ case NEG_BIG_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("bignum"));
+ case REF_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("reference"));
+ case EXTERNAL_REF_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("external_reference"));
+ case EXTERNAL_PID_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("external_pid"));
+ case EXTERNAL_PORT_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("external_port"));
+ case FLOAT_SUBTAG:
+ BIF_RET(ERTS_MAKE_AM("hfloat"));
+ default:
+ erl_exit(ERTS_ABORT_EXIT, "term_type: Invalid tag (0x%X)\n", hdr);
+ }
}
+ case TAG_PRIMARY_IMMED1:
+ switch (obj & _TAG_IMMED1_MASK) {
+ case _TAG_IMMED1_SMALL:
+ BIF_RET(ERTS_MAKE_AM("fixnum"));
+ case _TAG_IMMED1_PID:
+ BIF_RET(ERTS_MAKE_AM("pid"));
+ case _TAG_IMMED1_PORT:
+ BIF_RET(ERTS_MAKE_AM("port"));
+ case _TAG_IMMED1_IMMED2:
+ switch (obj & _TAG_IMMED2_MASK) {
+ case _TAG_IMMED2_ATOM:
+ BIF_RET(ERTS_MAKE_AM("atom"));
+ case _TAG_IMMED2_CATCH:
+ BIF_RET(ERTS_MAKE_AM("catch"));
+ case _TAG_IMMED2_NIL:
+ BIF_RET(ERTS_MAKE_AM("nil"));
+ default:
+ erl_exit(ERTS_ABORT_EXIT, "term_type: Invalid tag (0x%X)\n", obj);
+ }
+ default:
+ erl_exit(ERTS_ABORT_EXIT, "term_type: Invalid tag (0x%X)\n", obj);
+ }
+ default:
+ erl_exit(ERTS_ABORT_EXIT, "term_type: Invalid tag (0x%X)\n", obj);
}
- BIF_P->fvalue = BIF_ARG_1;
- BIF_ERROR(BIF_P, BADMAP);
}
/*
diff --git a/erts/emulator/beam/erl_map.h b/erts/emulator/beam/erl_map.h
index be6f791a4e..052fa99f03 100644
--- a/erts/emulator/beam/erl_map.h
+++ b/erts/emulator/beam/erl_map.h
@@ -180,14 +180,17 @@ typedef struct hashmap_head_s {
[one cons cell + one list term in parent node] per key
[one header + one boxed term in parent node] per inner node
[one header + one size word] for root node
+ Observed average number of nodes per key is about 0.35.
*/
-#define HASHMAP_HEAP_SIZE(KEYS,NODES) ((KEYS)*3 + (NODES)*2)
+#define HASHMAP_WORDS_PER_KEY 3
+#define HASHMAP_WORDS_PER_NODE 2
#ifdef DEBUG
-# define HASHMAP_ESTIMATED_NODE_COUNT(KEYS) (KEYS)
+# define HASHMAP_ESTIMATED_TOT_NODE_SIZE(KEYS) \
+ (HASHMAP_WORDS_PER_NODE * (KEYS) * 3/10) /* slightly under estimated */
#else
-# define HASHMAP_ESTIMATED_NODE_COUNT(KEYS) (2*(KEYS)/5)
+# define HASHMAP_ESTIMATED_TOT_NODE_SIZE(KEYS) \
+ (HASHMAP_WORDS_PER_NODE * (KEYS) * 4/10) /* slightly over estimated */
#endif
#define HASHMAP_ESTIMATED_HEAP_SIZE(KEYS) \
- HASHMAP_HEAP_SIZE(KEYS,HASHMAP_ESTIMATED_NODE_COUNT(KEYS))
-
+ ((KEYS)*HASHMAP_WORDS_PER_KEY + HASHMAP_ESTIMATED_TOT_NODE_SIZE(KEYS))
#endif
diff --git a/erts/emulator/beam/erl_message.c b/erts/emulator/beam/erl_message.c
index d593108f8e..b3e74e3e6a 100644
--- a/erts/emulator/beam/erl_message.c
+++ b/erts/emulator/beam/erl_message.c
@@ -630,9 +630,24 @@ erts_try_alloc_message_on_heap(Process *pp,
#endif
else {
in_message_fragment:
-
- mp = erts_alloc_message(sz, hpp);
- *ohpp = sz == 0 ? NULL : &mp->hfrag.off_heap;
+ if (!((*psp) & ERTS_PSFLG_ON_HEAP_MSGQ)) {
+ mp = erts_alloc_message(sz, hpp);
+ *ohpp = sz == 0 ? NULL : &mp->hfrag.off_heap;
+ }
+ else {
+ mp = erts_alloc_message(0, NULL);
+ if (!sz) {
+ *hpp = NULL;
+ *ohpp = NULL;
+ }
+ else {
+ ErlHeapFragment *bp;
+ bp = new_message_buffer(sz);
+ *hpp = &bp->mem[0];
+ mp->data.heap_frag = bp;
+ *ohpp = &bp->off_heap;
+ }
+ }
*on_heap_p = 0;
}
@@ -1022,12 +1037,12 @@ erts_complete_off_heap_message_queue_change(Process *c_p)
ASSERT(erts_smp_atomic32_read_nob(&c_p->state) & ERTS_PSFLG_OFF_HEAP_MSGQ);
/*
- * This job was first initiated when the process changed
- * "off heap message queue" state from false to true. Since
- * then ERTS_PSFLG_OFF_HEAP_MSGQ has been set. However, the
- * state change might have been changed again (multiple times)
- * since then. Check users last requested state (the flag
- * F_OFF_HEAP_MSGQ), and make the state consistent with that.
+ * This job was first initiated when the process changed to off heap
+ * message queue management. Since then ERTS_PSFLG_OFF_HEAP_MSGQ
+ * has been set. However, the management state might have been changed
+ * again (multiple times) since then. Check users last requested state
+ * (the flags F_OFF_HEAP_MSGQ, and F_ON_HEAP_MSGQ), and make the state
+ * consistent with that.
*/
if (!(c_p->flags & F_OFF_HEAP_MSGQ))
@@ -1068,8 +1083,9 @@ change_off_heap_msgq(void *vcohmq)
}
Eterm
-erts_change_off_heap_message_queue_state(Process *c_p, int enable)
+erts_change_message_queue_management(Process *c_p, Eterm new_state)
{
+ Eterm res;
#ifdef DEBUG
if (c_p->flags & F_OFF_HEAP_MSGQ) {
@@ -1088,57 +1104,117 @@ erts_change_off_heap_message_queue_state(Process *c_p, int enable)
}
#endif
- if (c_p->flags & F_OFF_HEAP_MSGQ) {
- /* Off heap message queue is enabled */
+ switch (c_p->flags & (F_OFF_HEAP_MSGQ|F_ON_HEAP_MSGQ)) {
+
+ case F_OFF_HEAP_MSGQ:
+ res = am_off_heap;
- if (!enable) {
+ switch (new_state) {
+ case am_off_heap:
+ break;
+ case am_on_heap:
+ c_p->flags |= F_ON_HEAP_MSGQ;
+ erts_smp_atomic32_read_bor_nob(&c_p->state,
+ ERTS_PSFLG_ON_HEAP_MSGQ);
+ /* fall through */
+ case am_mixed:
c_p->flags &= ~F_OFF_HEAP_MSGQ;
/*
* We are not allowed to clear ERTS_PSFLG_OFF_HEAP_MSGQ
- * if a change is ongoing. It will be adjusted when the
- * change completes...
+ * if a off heap change is ongoing. It will be adjusted
+ * when the change completes...
*/
if (!(c_p->flags & F_OFF_HEAP_MSGQ_CHNG)) {
/* Safe to clear ERTS_PSFLG_OFF_HEAP_MSGQ... */
erts_smp_atomic32_read_band_nob(&c_p->state,
~ERTS_PSFLG_OFF_HEAP_MSGQ);
}
+ break;
+ default:
+ res = THE_NON_VALUE; /* badarg */
+ break;
+ }
+ break;
+
+ case F_ON_HEAP_MSGQ:
+ res = am_on_heap;
+
+ switch (new_state) {
+ case am_on_heap:
+ break;
+ case am_mixed:
+ c_p->flags &= ~F_ON_HEAP_MSGQ;
+ erts_smp_atomic32_read_band_nob(&c_p->state,
+ ~ERTS_PSFLG_ON_HEAP_MSGQ);
+ break;
+ case am_off_heap:
+ c_p->flags &= ~F_ON_HEAP_MSGQ;
+ erts_smp_atomic32_read_band_nob(&c_p->state,
+ ~ERTS_PSFLG_ON_HEAP_MSGQ);
+ goto change_to_off_heap;
+ default:
+ res = THE_NON_VALUE; /* badarg */
+ break;
+ }
+ break;
+
+ case 0:
+ res = am_mixed;
+
+ switch (new_state) {
+ case am_mixed:
+ break;
+ case am_on_heap:
+ c_p->flags |= F_ON_HEAP_MSGQ;
+ erts_smp_atomic32_read_bor_nob(&c_p->state,
+ ERTS_PSFLG_ON_HEAP_MSGQ);
+ break;
+ case am_off_heap:
+ goto change_to_off_heap;
+ default:
+ res = THE_NON_VALUE; /* badarg */
+ break;
}
+ break;
- return am_true; /* Old state */
+ default:
+ res = am_error;
+ ERTS_INTERNAL_ERROR("Inconsistent message queue management state");
+ break;
}
- /* Off heap message queue is disabled */
+ return res;
+
+change_to_off_heap:
- if (enable) {
- c_p->flags |= F_OFF_HEAP_MSGQ;
+ c_p->flags |= F_OFF_HEAP_MSGQ;
+
+ /*
+ * We do not have to schedule a change if
+ * we have an ongoing off heap change...
+ */
+ if (!(c_p->flags & F_OFF_HEAP_MSGQ_CHNG)) {
+ ErtsChangeOffHeapMessageQueue *cohmq;
/*
- * We do not have to schedule a change if
- * we have an ongoing change...
+ * Need to set ERTS_PSFLG_OFF_HEAP_MSGQ and wait
+ * thread progress before completing the change in
+ * order to ensure that all senders observe that
+ * messages should be passed off heap. When the
+ * change has completed, GC does not need to inspect
+ * the message queue at all.
*/
- if (!(c_p->flags & F_OFF_HEAP_MSGQ_CHNG)) {
- ErtsChangeOffHeapMessageQueue *cohmq;
- /*
- * Need to set ERTS_PSFLG_OFF_HEAP_MSGQ and wait
- * thread progress before completing the change in
- * order to ensure that all senders observe that
- * messages should be passed off heap. When the
- * change has completed, GC does not need to inspect
- * the message queue at all.
- */
- erts_smp_atomic32_read_bor_nob(&c_p->state,
- ERTS_PSFLG_OFF_HEAP_MSGQ);
- c_p->flags |= F_OFF_HEAP_MSGQ_CHNG;
- cohmq = erts_alloc(ERTS_ALC_T_MSGQ_CHNG,
- sizeof(ErtsChangeOffHeapMessageQueue));
- cohmq->pid = c_p->common.id;
- erts_schedule_thr_prgr_later_op(change_off_heap_msgq,
- (void *) cohmq,
- &cohmq->lop);
- }
+ erts_smp_atomic32_read_bor_nob(&c_p->state,
+ ERTS_PSFLG_OFF_HEAP_MSGQ);
+ c_p->flags |= F_OFF_HEAP_MSGQ_CHNG;
+ cohmq = erts_alloc(ERTS_ALC_T_MSGQ_CHNG,
+ sizeof(ErtsChangeOffHeapMessageQueue));
+ cohmq->pid = c_p->common.id;
+ erts_schedule_thr_prgr_later_op(change_off_heap_msgq,
+ (void *) cohmq,
+ &cohmq->lop);
}
- return am_false; /* Old state */
+ return res;
}
int
@@ -1501,6 +1577,9 @@ void erts_factory_selfcontained_message_init(ErtsHeapFactory* factory,
ASSERT(factory->hp >= factory->hp_start && factory->hp <= factory->hp_end);
}
+/* One static sized heap that must suffice.
+ No extra heap fragments will be allocated.
+*/
void erts_factory_static_init(ErtsHeapFactory* factory,
Eterm* hp,
Uint size,
@@ -1515,6 +1594,23 @@ void erts_factory_static_init(ErtsHeapFactory* factory,
factory->off_heap_saved.overhead = factory->off_heap->overhead;
}
+/* A temporary heap with default buffer allocated/freed by client.
+ * factory_close is same as factory_undo
+ */
+void erts_factory_tmp_init(ErtsHeapFactory* factory, Eterm* hp, Uint size,
+ Uint32 atype)
+{
+ factory->mode = FACTORY_TMP;
+ factory->hp_start = hp;
+ factory->hp = hp;
+ factory->hp_end = hp + size;
+ factory->heap_frags = NULL;
+ factory->off_heap_saved.first = NULL;
+ factory->off_heap_saved.overhead = 0;
+ factory->off_heap = &factory->off_heap_saved;
+ factory->alloc_type = atype;
+}
+
/* When we know the term is an immediate and need no heap.
*/
void erts_factory_dummy_init(ErtsHeapFactory* factory)
@@ -1565,6 +1661,7 @@ static void reserve_heap(ErtsHeapFactory* factory, Uint need, Uint xtra)
else {
/* Fall through */
case FACTORY_HEAP_FRAGS:
+ case FACTORY_TMP:
bp = factory->heap_frags;
}
@@ -1630,6 +1727,9 @@ void erts_factory_close(ErtsHeapFactory* factory)
bp->used_size = factory->hp - bp->mem;
}
break;
+ case FACTORY_TMP:
+ erts_factory_undo(factory);
+ break;
case FACTORY_STATIC: break;
case FACTORY_CLOSED: break;
default:
@@ -1756,8 +1856,20 @@ void erts_factory_undo(ErtsHeapFactory* factory)
factory->message->data.heap_frag = factory->heap_frags;
erts_cleanup_messages(factory->message);
break;
+ case FACTORY_TMP:
case FACTORY_HEAP_FRAGS:
- free_message_buffer(factory->heap_frags);
+ erts_cleanup_offheap(factory->off_heap);
+ factory->off_heap->first = NULL;
+
+ bp = factory->heap_frags;
+ while (bp != NULL) {
+ ErlHeapFragment* next_bp = bp->next;
+
+ ASSERT(bp->off_heap.first == NULL);
+ ERTS_HEAP_FREE(factory->alloc_type, (void *) bp,
+ ERTS_HEAP_FRAG_SIZE(bp->alloc_size));
+ bp = next_bp;
+ }
break;
case FACTORY_CLOSED: break;
diff --git a/erts/emulator/beam/erl_message.h b/erts/emulator/beam/erl_message.h
index 76387bc34c..60035d15ae 100644
--- a/erts/emulator/beam/erl_message.h
+++ b/erts/emulator/beam/erl_message.h
@@ -58,7 +58,8 @@ typedef struct {
FACTORY_HALLOC,
FACTORY_MESSAGE,
FACTORY_HEAP_FRAGS,
- FACTORY_STATIC
+ FACTORY_STATIC,
+ FACTORY_TMP
} mode;
Process* p;
Eterm* hp_start;
@@ -80,6 +81,7 @@ ErtsMessage *erts_factory_message_create(ErtsHeapFactory *, Process *,
ErtsProcLocks *, Uint sz);
void erts_factory_selfcontained_message_init(ErtsHeapFactory*, ErtsMessage *, Eterm *);
void erts_factory_static_init(ErtsHeapFactory*, Eterm* hp, Uint size, ErlOffHeap*);
+void erts_factory_tmp_init(ErtsHeapFactory*, Eterm* hp, Uint size, Uint32 atype);
void erts_factory_dummy_init(ErtsHeapFactory*);
Eterm* erts_produce_heap(ErtsHeapFactory*, Uint need, Uint xtra);
@@ -284,7 +286,7 @@ void erts_cleanup_offheap(ErlOffHeap *offheap);
void erts_save_message_in_proc(Process *p, ErtsMessage *msg);
Sint erts_move_messages_off_heap(Process *c_p);
Sint erts_complete_off_heap_message_queue_change(Process *c_p);
-Eterm erts_change_off_heap_message_queue_state(Process *c_p, int enable);
+Eterm erts_change_message_queue_management(Process *c_p, Eterm new_state);
int erts_decode_dist_message(Process *, ErtsProcLocks, ErtsMessage *, int);
diff --git a/erts/emulator/beam/erl_node_tables.c b/erts/emulator/beam/erl_node_tables.c
index 74e3e81d6f..13f14adbab 100644
--- a/erts/emulator/beam/erl_node_tables.c
+++ b/erts/emulator/beam/erl_node_tables.c
@@ -752,6 +752,10 @@ erts_set_this_node(Eterm sysname, Uint creation)
erts_this_dist_entry = erts_this_node->dist_entry;
erts_refc_inc(&erts_this_dist_entry->refc, 2);
+
+ erts_this_node_sysname = erts_this_node_sysname_BUFFER;
+ erts_snprintf(erts_this_node_sysname, sizeof(erts_this_node_sysname_BUFFER),
+ "%T", sysname);
}
Uint
@@ -783,10 +787,13 @@ void erts_init_node_tables(int dd_sec)
erts_smp_rwmtx_init_opt(&erts_node_table_rwmtx, &rwmtx_opt, "node_table");
erts_smp_rwmtx_init_opt(&erts_dist_table_rwmtx, &rwmtx_opt, "dist_table");
- f.hash = (H_FUN) dist_table_hash;
- f.cmp = (HCMP_FUN) dist_table_cmp;
- f.alloc = (HALLOC_FUN) dist_table_alloc;
- f.free = (HFREE_FUN) dist_table_free;
+ f.hash = (H_FUN) dist_table_hash;
+ f.cmp = (HCMP_FUN) dist_table_cmp;
+ f.alloc = (HALLOC_FUN) dist_table_alloc;
+ f.free = (HFREE_FUN) dist_table_free;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
hash_init(ERTS_ALC_T_DIST_TABLE, &erts_dist_table, "dist_table", 11, f);
f.hash = (H_FUN) node_table_hash;
diff --git a/erts/emulator/beam/erl_node_tables.h b/erts/emulator/beam/erl_node_tables.h
index 64278d2ea0..fb2f2a5407 100644
--- a/erts/emulator/beam/erl_node_tables.h
+++ b/erts/emulator/beam/erl_node_tables.h
@@ -41,6 +41,7 @@
#include "sys.h"
#include "hash.h"
+#include "erl_alloc.h"
#include "erl_process.h"
#include "erl_monitors.h"
#include "erl_smp.h"
diff --git a/erts/emulator/beam/erl_port.h b/erts/emulator/beam/erl_port.h
index acd68ef0ad..fa97707a87 100644
--- a/erts/emulator/beam/erl_port.h
+++ b/erts/emulator/beam/erl_port.h
@@ -187,6 +187,11 @@ struct _erl_drv_port {
ErtsPrtSD *psd; /* Port specific data */
int reds; /* Only used while executing driver callbacks */
+
+ struct {
+ Eterm to;
+ Uint32 ref[ERTS_MAX_REF_NUMBERS];
+ } *async_open_port; /* Reference used with async open port */
};
@@ -687,7 +692,7 @@ erts_drvport2port_state(ErlDrvPort drvport, erts_aint32_t *statep)
Port *prt = ERTS_ErlDrvPort2Port(drvport);
erts_aint32_t state;
ASSERT(prt);
- ERTS_LC_ASSERT(erts_lc_is_emu_thr());
+// ERTS_LC_ASSERT(erts_lc_is_emu_thr());
if (prt == ERTS_INVALID_ERL_DRV_PORT)
return ERTS_INVALID_ERL_DRV_PORT;
ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(prt)
@@ -944,4 +949,9 @@ ErtsPortOpResult erts_port_control(Process *, Port *, unsigned int, Eterm, Eterm
ErtsPortOpResult erts_port_call(Process *, Port *, unsigned int, Eterm, Eterm *);
ErtsPortOpResult erts_port_info(Process *, Port *, Eterm, Eterm *);
+/*
+ * Signals from ports to ports. Used by sys drivers.
+ */
+int erl_drv_port_control(Eterm, char, char*, ErlDrvSizeT);
+
#endif
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index a714068314..2c62685f8c 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -335,7 +335,6 @@ static ErtsAlignedSchedulerSleepInfo *aligned_dirty_io_sched_sleep_info;
static Uint last_reductions;
static Uint last_exact_reductions;
-Uint erts_default_process_flags;
Eterm erts_system_monitor;
Eterm erts_system_monitor_long_gc;
Uint erts_system_monitor_long_schedule;
@@ -499,9 +498,6 @@ dbg_chk_aux_work_val(erts_aint32_t value)
#if HAVE_ERTS_MSEG
valid |= ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK;
#endif
-#ifdef ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN
- valid |= ERTS_SSI_AUX_WORK_CHECK_CHILDREN;
-#endif
#ifdef ERTS_SSI_AUX_WORK_REAP_PORTS
valid |= ERTS_SSI_AUX_WORK_REAP_PORTS;
#endif
@@ -588,8 +584,6 @@ erts_pre_init_process(void)
= "MISC_THR_PRGR";
erts_aux_work_flag_descr[ERTS_SSI_AUX_WORK_MISC_IX]
= "MISC";
- erts_aux_work_flag_descr[ERTS_SSI_AUX_WORK_CHECK_CHILDREN_IX]
- = "CHECK_CHILDREN";
erts_aux_work_flag_descr[ERTS_SSI_AUX_WORK_SET_TMO_IX]
= "SET_TMO";
erts_aux_work_flag_descr[ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK_IX]
@@ -677,7 +671,6 @@ erts_init_process(int ncpu, int proc_tab_size, int legacy_proc_tab)
last_reductions = 0;
last_exact_reductions = 0;
- erts_default_process_flags = 0;
}
void
@@ -2097,34 +2090,6 @@ erts_debug_wait_completed(Process *c_p, int flags)
}
-#ifdef ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN
-void
-erts_smp_notify_check_children_needed(void)
-{
- int i;
- for (i = 0; i < erts_no_schedulers; i++)
- set_aux_work_flags_wakeup_nob(ERTS_SCHED_SLEEP_INFO_IX(i),
- ERTS_SSI_AUX_WORK_CHECK_CHILDREN);
-#ifdef ERTS_DIRTY_SCHEDULERS
- for (i = 0; i < erts_no_dirty_cpu_schedulers; i++)
- set_aux_work_flags_wakeup_nob(ERTS_DIRTY_CPU_SCHED_SLEEP_INFO_IX(i),
- ERTS_SSI_AUX_WORK_CHECK_CHILDREN);
- for (i = 0; i < erts_no_dirty_io_schedulers; i++)
- set_aux_work_flags_wakeup_nob(ERTS_DIRTY_IO_SCHED_SLEEP_INFO_IX(i),
- ERTS_SSI_AUX_WORK_CHECK_CHILDREN);
-#endif
-}
-
-static ERTS_INLINE erts_aint32_t
-handle_check_children(ErtsAuxWorkData *awdp, erts_aint32_t aux_work, int waiting)
-{
- unset_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_CHECK_CHILDREN);
- erts_check_children();
- return aux_work & ~ERTS_SSI_AUX_WORK_CHECK_CHILDREN;
-}
-
-#endif
-
static void
notify_reap_ports_relb(void)
{
@@ -2278,10 +2243,6 @@ handle_aux_work(ErtsAuxWorkData *awdp, erts_aint32_t orig_aux_work, int waiting)
HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_MISC,
handle_misc_aux_work);
-#ifdef ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN
- HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_CHECK_CHILDREN,
- handle_check_children);
-#endif
HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_SET_TMO,
handle_setup_aux_work_timer);
@@ -9259,6 +9220,8 @@ Process *schedule(Process *p, int calls)
} else {
sched_out_proc:
+ ASSERT(!(p->flags & F_DELAY_GC));
+
#ifdef ERTS_SMP
ERTS_SMP_CHK_HAVE_ONLY_MAIN_PROC_LOCK(p);
esdp = p->scheduler_data;
@@ -10732,7 +10695,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
Eterm args, /* Arguments for function (must be well-formed list). */
ErlSpawnOpts* so) /* Options for spawn. */
{
- Uint flags = erts_default_process_flags;
+ Uint flags = 0;
ErtsRunQueue *rq = NULL;
Process *p;
Sint arity; /* Number of arguments. */
@@ -10778,6 +10741,10 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
state |= ERTS_PSFLG_OFF_HEAP_MSGQ;
flags |= F_OFF_HEAP_MSGQ;
}
+ else if (so->flags & SPO_ON_HEAP_MSGQ) {
+ state |= ERTS_PSFLG_ON_HEAP_MSGQ;
+ flags |= F_ON_HEAP_MSGQ;
+ }
if (!rq)
rq = erts_get_runq_proc(parent);
@@ -11267,6 +11234,7 @@ erts_cleanup_empty_process(Process* p)
static void
delete_process(Process* p)
{
+ Eterm *heap;
VERBOSE(DEBUG_PROCESSES, ("Removing process: %T\n",p->common.id));
VERBOSE(DEBUG_SHCOPY, ("[pid=%T] delete process: %p %p %p %p\n", p->common.id,
HEAP_START(p), HEAP_END(p), OLD_HEAP(p), OLD_HEND(p)));
@@ -11293,16 +11261,17 @@ delete_process(Process* p)
* Release heaps. Clobber contents in DEBUG build.
*/
-
-#ifdef DEBUG
- sys_memset(p->heap, DEBUG_BAD_BYTE, p->heap_sz*sizeof(Eterm));
-#endif
-
#ifdef HIPE
hipe_delete_process(&p->hipe);
#endif
- ERTS_HEAP_FREE(ERTS_ALC_T_HEAP, (void*) p->heap, p->heap_sz*sizeof(Eterm));
+ heap = p->abandoned_heap ? p->abandoned_heap : p->heap;
+
+#ifdef DEBUG
+ sys_memset(heap, DEBUG_BAD_BYTE, p->heap_sz*sizeof(Eterm));
+#endif
+
+ ERTS_HEAP_FREE(ERTS_ALC_T_HEAP, (void*) heap, p->heap_sz*sizeof(Eterm));
if (p->old_heap != NULL) {
#ifdef DEBUG
@@ -11321,6 +11290,9 @@ delete_process(Process* p)
free_message_buffer(p->mbuf);
}
+ if (p->msg_frag)
+ erts_cleanup_messages(p->msg_frag);
+
erts_erase_dicts(p);
/* free all pending messages */
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index a72c5b8ad4..4bc879eacb 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -293,7 +293,6 @@ typedef enum {
ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN_IX,
ERTS_SSI_AUX_WORK_MISC_THR_PRGR_IX,
ERTS_SSI_AUX_WORK_MISC_IX,
- ERTS_SSI_AUX_WORK_CHECK_CHILDREN_IX,
ERTS_SSI_AUX_WORK_SET_TMO_IX,
ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK_IX,
ERTS_SSI_AUX_WORK_REAP_PORTS_IX,
@@ -326,8 +325,6 @@ typedef enum {
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MISC_THR_PRGR_IX)
#define ERTS_SSI_AUX_WORK_MISC \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MISC_IX)
-#define ERTS_SSI_AUX_WORK_CHECK_CHILDREN \
- (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_CHECK_CHILDREN_IX)
#define ERTS_SSI_AUX_WORK_SET_TMO \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_SET_TMO_IX)
#define ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK \
@@ -1141,14 +1138,15 @@ void erts_check_for_holes(Process* p);
#define ERTS_PSFLG_PROXY ERTS_PSFLG_BIT(16)
#define ERTS_PSFLG_DELAYED_SYS ERTS_PSFLG_BIT(17)
#define ERTS_PSFLG_OFF_HEAP_MSGQ ERTS_PSFLG_BIT(18)
+#define ERTS_PSFLG_ON_HEAP_MSGQ ERTS_PSFLG_BIT(19)
#ifdef ERTS_DIRTY_SCHEDULERS
-#define ERTS_PSFLG_DIRTY_CPU_PROC ERTS_PSFLG_BIT(19)
-#define ERTS_PSFLG_DIRTY_IO_PROC ERTS_PSFLG_BIT(20)
-#define ERTS_PSFLG_DIRTY_CPU_PROC_IN_Q ERTS_PSFLG_BIT(21)
-#define ERTS_PSFLG_DIRTY_IO_PROC_IN_Q ERTS_PSFLG_BIT(22)
-#define ERTS_PSFLG_MAX (ERTS_PSFLGS_ZERO_BIT_OFFSET + 23)
+#define ERTS_PSFLG_DIRTY_CPU_PROC ERTS_PSFLG_BIT(20)
+#define ERTS_PSFLG_DIRTY_IO_PROC ERTS_PSFLG_BIT(21)
+#define ERTS_PSFLG_DIRTY_CPU_PROC_IN_Q ERTS_PSFLG_BIT(22)
+#define ERTS_PSFLG_DIRTY_IO_PROC_IN_Q ERTS_PSFLG_BIT(23)
+#define ERTS_PSFLG_MAX (ERTS_PSFLGS_ZERO_BIT_OFFSET + 24)
#else
-#define ERTS_PSFLG_MAX (ERTS_PSFLGS_ZERO_BIT_OFFSET + 19)
+#define ERTS_PSFLG_MAX (ERTS_PSFLGS_ZERO_BIT_OFFSET + 20)
#endif
#define ERTS_PSFLGS_IN_PRQ_MASK (ERTS_PSFLG_IN_PRQ_MAX \
@@ -1197,6 +1195,7 @@ void erts_check_for_holes(Process* p);
#define SPO_MONITOR 4
#define SPO_SYSTEM_PROC 8
#define SPO_OFF_HEAP_MSGQ 16
+#define SPO_ON_HEAP_MSGQ 32
extern int erts_default_spo_flags;
@@ -1244,7 +1243,6 @@ Eterm* erts_heap_alloc(Process* p, Uint need, Uint xtra);
Eterm* erts_set_hole_marker(Eterm* ptr, Uint sz);
#endif
-extern Uint erts_default_process_flags;
extern erts_smp_rwmtx_t erts_cpu_bind_rwmtx;
/* If any of the erts_system_monitor_* variables are set (enabled),
** erts_system_monitor must be != NIL, to allow testing on just
@@ -1285,10 +1283,23 @@ extern struct erts_system_profile_flags_t erts_system_profile_flags;
#define F_HAVE_BLCKD_MSCHED (1 << 8) /* Process has blocked multi-scheduling */
#define F_P2PNR_RESCHED (1 << 9) /* Process has been rescheduled via erts_pid2proc_not_running() */
#define F_FORCE_GC (1 << 10) /* Force gc at process in-scheduling */
-#define F_DISABLE_GC (1 << 11) /* Disable GC */
+#define F_DISABLE_GC (1 << 11) /* Disable GC (see below) */
#define F_OFF_HEAP_MSGQ (1 << 12) /* Off heap msg queue */
-#define F_OFF_HEAP_MSGQ_CHNG (1 << 13) /* Off heap msg queue changing */
-#define F_ABANDONED_HEAP_USE (1 << 14) /* Have usage of abandoned heap */
+#define F_ON_HEAP_MSGQ (1 << 13) /* Off heap msg queue */
+#define F_OFF_HEAP_MSGQ_CHNG (1 << 14) /* Off heap msg queue changing */
+#define F_ABANDONED_HEAP_USE (1 << 15) /* Have usage of abandoned heap */
+#define F_DELAY_GC (1 << 16) /* Similar to disable GC (see below) */
+
+/*
+ * F_DISABLE_GC and F_DELAY_GC are similar. Both will prevent
+ * GC of the process, but it is important to use the right
+ * one:
+ * - F_DISABLE_GC should *only* be used by BIFs. This when
+ * the BIF needs to yield while preventig a GC.
+ * - F_DELAY_GC should only be used when GC is temporarily
+ * disabled while the process is scheduled. A process must
+ * not be scheduled out while F_DELAY_GC is set.
+ */
/* process trace_flags */
#define F_SENSITIVE (1 << 0)
@@ -1652,11 +1663,8 @@ Eterm erts_multi_scheduling_blockers(Process *);
void erts_start_schedulers(void);
void erts_alloc_notify_delayed_dealloc(int);
void erts_alloc_ensure_handle_delayed_dealloc_call(int);
-#ifdef ERTS_SMP
void erts_notify_canceled_timer(ErtsSchedulerData *, int);
#endif
-void erts_smp_notify_check_children_needed(void);
-#endif
#if ERTS_USE_ASYNC_READY_Q
void erts_notify_check_async_ready_queue(void *);
#endif
diff --git a/erts/emulator/beam/erl_process_dict.c b/erts/emulator/beam/erl_process_dict.c
index f82cad745a..da9ebd92ab 100644
--- a/erts/emulator/beam/erl_process_dict.c
+++ b/erts/emulator/beam/erl_process_dict.c
@@ -53,14 +53,17 @@
/* Hash utility macros */
#define HASH_RANGE(PDict) ((PDict)->homeSize + (PDict)->splitPosition)
-#define MAKE_HASH(Term) \
-((is_small(Term)) ? unsigned_val(Term) : \
- ((is_atom(Term)) ? \
- (atom_tab(atom_val(term))->slot.bucket.hvalue) : \
- make_hash2(Term)))
+#define MAKE_HASH(Term) \
+ ((is_small(Term)) ? unsigned_val(Term) : \
+ ((is_atom(Term)) ? \
+ (atom_tab(atom_val(Term))->slot.bucket.hvalue) : \
+ make_internal_hash(Term)))
#define PD_SZ2BYTES(Sz) (sizeof(ProcDict) + ((Sz) - 1)*sizeof(Eterm))
+#define pd_hash_value(Pdict, Key) \
+ pd_hash_value_to_ix(Pdict, MAKE_HASH((Key)))
+
/* Memory allocation macros */
#define PD_ALLOC(Sz) \
erts_alloc(ERTS_ALC_T_PROC_DICT, (Sz))
@@ -82,6 +85,7 @@
*/
static void pd_hash_erase(Process *p, Eterm id, Eterm *ret);
static void pd_hash_erase_all(Process *p);
+static Eterm pd_hash_get_with_hval(Process *p, Eterm bucket, Eterm id);
static Eterm pd_hash_get_keys(Process *p, Eterm value);
static Eterm pd_hash_get_all_keys(Process *p, ProcDict *pd);
static Eterm pd_hash_get_all(Process *p, ProcDict *pd);
@@ -93,7 +97,7 @@ static void grow(Process *p);
static void array_shrink(ProcDict **ppd, unsigned int need);
static Eterm array_put(ProcDict **ppdict, unsigned int ndx, Eterm term);
-static unsigned int pd_hash_value(ProcDict *pdict, Eterm term);
+static unsigned int pd_hash_value_to_ix(ProcDict *pdict, Uint32 hx);
static unsigned int next_array_size(unsigned int need);
/*
@@ -390,40 +394,55 @@ static void pd_hash_erase_all(Process *p)
}
}
+Eterm erts_pd_hash_get_with_hx(Process *p, Uint32 hx, Eterm id)
+{
+ unsigned int hval;
+ ProcDict *pd = p->dictionary;
+
+ if (pd == NULL)
+ return am_undefined;
+ hval = pd_hash_value_to_ix(pd, hx);
+ return pd_hash_get_with_hval(p, ARRAY_GET(pd, hval), id);
+}
+
Eterm erts_pd_hash_get(Process *p, Eterm id)
{
unsigned int hval;
- Eterm tmp;
ProcDict *pd = p->dictionary;
if (pd == NULL)
return am_undefined;
hval = pd_hash_value(pd, id);
- tmp = ARRAY_GET(pd, hval);
- if (is_boxed(tmp)) { /* Tuple */
- ASSERT(is_tuple(tmp));
- if (EQ(tuple_val(tmp)[1], id)) {
- return tuple_val(tmp)[2];
+ return pd_hash_get_with_hval(p, ARRAY_GET(pd, hval), id);
+}
+
+Eterm pd_hash_get_with_hval(Process *p, Eterm bucket, Eterm id)
+{
+ if (is_boxed(bucket)) { /* Tuple */
+ ASSERT(is_tuple(bucket));
+ if (EQ(tuple_val(bucket)[1], id)) {
+ return tuple_val(bucket)[2];
}
- } else if (is_list(tmp)) {
- for (; tmp != NIL && !EQ(tuple_val(TCAR(tmp))[1], id); tmp = TCDR(tmp)) {
+ } else if (is_list(bucket)) {
+ for (; bucket != NIL && !EQ(tuple_val(TCAR(bucket))[1], id); bucket = TCDR(bucket)) {
;
}
- if (tmp != NIL) {
- return tuple_val(TCAR(tmp))[2];
+ if (bucket != NIL) {
+ return tuple_val(TCAR(bucket))[2];
}
- } else if (is_not_nil(tmp)) {
+ } else if (is_not_nil(bucket)) {
#ifdef DEBUG
erts_fprintf(stderr,
"Process dictionary for process %T is broken, trying to "
"display term found in line %d:\n"
- "%T\n", p->common.id, __LINE__, tmp);
+ "%T\n", p->common.id, __LINE__, bucket);
#endif
erl_exit(1, "Damaged process dictionary found during get/1.");
}
return am_undefined;
}
+
#define PD_GET_TKEY(Dst,Src) \
do { \
ASSERT(is_tuple((Src))); \
@@ -932,17 +951,16 @@ static Eterm array_put(ProcDict **ppdict, unsigned int ndx, Eterm term)
** Basic utilities
*/
-static unsigned int pd_hash_value(ProcDict *pdict, Eterm term)
+static unsigned int pd_hash_value_to_ix(ProcDict *pdict, Uint32 hx)
{
- Uint hash, high;
-
- hash = MAKE_HASH(term);
- high = hash % (pdict->homeSize*2);
+ Uint high;
+ high = hx % (pdict->homeSize*2);
if (high >= HASH_RANGE(pdict))
- return hash % pdict->homeSize;
+ return hx % pdict->homeSize;
return high;
}
+
static unsigned int next_array_size(unsigned int need)
{
static unsigned int tab[] =
diff --git a/erts/emulator/beam/erl_process_dict.h b/erts/emulator/beam/erl_process_dict.h
index cc53800eb5..9aa21b7c38 100644
--- a/erts/emulator/beam/erl_process_dict.h
+++ b/erts/emulator/beam/erl_process_dict.h
@@ -39,5 +39,6 @@ void erts_deep_dictionary_dump(int to, void *to_arg,
Eterm erts_dictionary_copy(struct process *p, ProcDict *pd);
Eterm erts_pd_hash_get(struct process *p, Eterm id);
+Eterm erts_pd_hash_get_with_hx(Process *p, Uint32 hx, Eterm id);
#endif
diff --git a/erts/emulator/beam/export.c b/erts/emulator/beam/export.c
index 2420df36b5..581efe6eec 100644
--- a/erts/emulator/beam/export.c
+++ b/erts/emulator/beam/export.c
@@ -184,6 +184,9 @@ init_export_table(void)
f.cmp = (HCMP_FUN) export_cmp;
f.alloc = (HALLOC_FUN) export_alloc;
f.free = (HFREE_FUN) export_free;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
for (i=0; i<ERTS_NUM_CODE_IX; i++) {
erts_index_init(ERTS_ALC_T_EXPORT_TABLE, &export_tables[i], "export_list",
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index 98c275a20c..0bf5988244 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -1492,6 +1492,7 @@ extern void erts_match_prog_foreach_offheap(Binary *b,
extern erts_driver_t vanilla_driver;
extern erts_driver_t spawn_driver;
+extern erts_driver_t forker_driver;
extern erts_driver_t fd_driver;
int erts_beam_jump_table(void);
diff --git a/erts/emulator/beam/hash.c b/erts/emulator/beam/hash.c
index e0fde337f2..5a0b93f693 100644
--- a/erts/emulator/beam/hash.c
+++ b/erts/emulator/beam/hash.c
@@ -27,8 +27,6 @@
#endif
#include "sys.h"
-#include "erl_vm.h"
-#include "global.h"
#include "hash.h"
/*
@@ -66,6 +64,7 @@ void hash_get_info(HashInfo *hi, Hash *h)
int i;
int max_depth = 0;
int objects = 0;
+ int used = 0;
for (i = 0; i < size; i++) {
int depth = 0;
@@ -76,14 +75,18 @@ void hash_get_info(HashInfo *hi, Hash *h)
depth++;
b = b->next;
}
- if (depth > max_depth)
- max_depth = depth;
+ if (depth) {
+ used++;
+ if (depth > max_depth)
+ max_depth = depth;
+ }
}
+ ASSERT(objects == h->nobjs);
hi->name = h->name;
hi->size = h->size;
- hi->used = h->used;
- hi->objs = objects;
+ hi->used = used;
+ hi->objs = h->nobjs;
hi->depth = max_depth;
}
@@ -98,11 +101,11 @@ void hash_info(int to, void *arg, Hash* h)
hash_get_info(&hi, h);
- erts_print(to, arg, "=hash_table:%s\n", hi.name);
- erts_print(to, arg, "size: %d\n", hi.size);
- erts_print(to, arg, "used: %d\n", hi.used);
- erts_print(to, arg, "objs: %d\n", hi.objs);
- erts_print(to, arg, "depth: %d\n", hi.depth);
+ h->fun.meta_print(to, arg, "=hash_table:%s\n", hi.name);
+ h->fun.meta_print(to, arg, "size: %d\n", hi.size);
+ h->fun.meta_print(to, arg, "used: %d\n", hi.used);
+ h->fun.meta_print(to, arg, "objs: %d\n", hi.objs);
+ h->fun.meta_print(to, arg, "depth: %d\n", hi.depth);
}
@@ -119,47 +122,56 @@ hash_table_sz(Hash *h)
}
+static ERTS_INLINE void set_thresholds(Hash* h)
+{
+ h->grow_threshold = (8*h->size)/5; /* grow at 160% load */
+ if (h->size_ix > h->min_size_ix)
+ h->shrink_threshold = h->size / 5; /* shrink at 20% load */
+ else
+ h->shrink_threshold = -1; /* never shrink below inital size */
+}
+
/*
** init a pre allocated or static hash structure
** and allocate buckets.
*/
-Hash* hash_init(ErtsAlcType_t type, Hash* h, char* name, int size, HashFunctions fun)
+Hash* hash_init(int type, Hash* h, char* name, int size, HashFunctions fun)
{
int sz;
int ix = 0;
- h->type = type;
+ h->meta_alloc_type = type;
while (h_size_table[ix] != -1 && h_size_table[ix] < size)
ix++;
if (h_size_table[ix] == -1)
- erl_exit(1, "panic: too large hash table size (%d)\n", size);
+ return NULL;
size = h_size_table[ix];
sz = size*sizeof(HashBucket*);
- h->bucket = (HashBucket**) erts_alloc(h->type, sz);
+ h->bucket = (HashBucket**) fun.meta_alloc(h->meta_alloc_type, sz);
sys_memzero(h->bucket, sz);
h->is_allocated = 0;
h->name = name;
h->fun = fun;
h->size = size;
- h->size20percent = h->size/5;
- h->size80percent = (4*h->size)/5;
- h->ix = ix;
- h->used = 0;
+ h->size_ix = ix;
+ h->min_size_ix = ix;
+ h->nobjs = 0;
+ set_thresholds(h);
return h;
}
/*
** Create a new hash table
*/
-Hash* hash_new(ErtsAlcType_t type, char* name, int size, HashFunctions fun)
+Hash* hash_new(int type, char* name, int size, HashFunctions fun)
{
Hash* h;
- h = erts_alloc(type, sizeof(Hash));
+ h = fun.meta_alloc(type, sizeof(Hash));
h = hash_init(type, h, name, size, fun);
h->is_allocated = 1;
@@ -183,9 +195,9 @@ void hash_delete(Hash* h)
b = b_next;
}
}
- erts_free(h->type, h->bucket);
+ h->fun.meta_free(h->meta_alloc_type, h->bucket);
if (h->is_allocated)
- erts_free(h->type, (void*) h);
+ h->fun.meta_free(h->meta_alloc_type, (void*) h);
}
/*
@@ -199,39 +211,34 @@ static void rehash(Hash* h, int grow)
int i;
if (grow) {
- if ((h_size_table[h->ix+1]) == -1)
+ if ((h_size_table[h->size_ix+1]) == -1)
return;
- h->ix++;
+ h->size_ix++;
}
else {
- if (h->ix == 0)
+ if (h->size_ix == 0)
return;
- h->ix--;
+ h->size_ix--;
}
- h->size = h_size_table[h->ix];
- h->size20percent = h->size/5;
- h->size80percent = (4*h->size)/5;
+ h->size = h_size_table[h->size_ix];
sz = h->size*sizeof(HashBucket*);
- new_bucket = (HashBucket **) erts_alloc(h->type, sz);
+ new_bucket = (HashBucket **) h->fun.meta_alloc(h->meta_alloc_type, sz);
sys_memzero(new_bucket, sz);
- h->used = 0;
-
for (i = 0; i < old_size; i++) {
HashBucket* b = h->bucket[i];
while (b != (HashBucket*) 0) {
HashBucket* b_next = b->next;
int ix = b->hvalue % h->size;
- if (new_bucket[ix] == NULL)
- h->used++;
b->next = new_bucket[ix];
new_bucket[ix] = b;
b = b_next;
}
}
- erts_free(h->type, (void *) h->bucket);
+ h->fun.meta_free(h->meta_alloc_type, (void *) h->bucket);
h->bucket = new_bucket;
+ set_thresholds(h);
}
/*
@@ -268,68 +275,15 @@ void* hash_put(Hash* h, void* tmpl)
}
b = (HashBucket*) h->fun.alloc(tmpl);
- if (h->bucket[ix] == NULL)
- h->used++;
-
b->hvalue = hval;
b->next = h->bucket[ix];
h->bucket[ix] = b;
- if (h->used > h->size80percent) /* rehash at 80% */
+ if (++h->nobjs > h->grow_threshold)
rehash(h, 1);
return (void*) b;
}
-static void
-hash_insert_entry(Hash* h, HashBucket* entry)
-{
- HashValue hval = entry->hvalue;
- int ix = hval % h->size;
- HashBucket* b = h->bucket[ix];
-
- while (b != (HashBucket*) 0) {
- if ((b->hvalue == hval) && (h->fun.cmp((void*)entry, (void*)b) == 0)) {
- abort(); /* Should not happen */
- }
- b = b->next;
- }
-
- if (h->bucket[ix] == NULL)
- h->used++;
-
- entry->next = h->bucket[ix];
- h->bucket[ix] = entry;
-
- if (h->used > h->size80percent) /* rehash at 80% */
- rehash(h, 1);
-}
-
-
-/*
- * Move all entries in src into dst; empty src.
- * Entries in src must not exist in dst.
- */
-void
-erts_hash_merge(Hash* src, Hash* dst)
-{
- int limit = src->size;
- HashBucket** bucket = src->bucket;
- int i;
-
- src->used = 0;
- for (i = 0; i < limit; i++) {
- HashBucket* b = bucket[i];
- HashBucket* next;
-
- bucket[i] = NULL;
- while (b) {
- next = b->next;
- hash_insert_entry(dst, b);
- b = next;
- }
- }
-}
-
/*
** Erase hash entry return template if erased
** return 0 if not erased
@@ -348,9 +302,7 @@ void* hash_erase(Hash* h, void* tmpl)
else
h->bucket[ix] = b->next;
h->fun.free((void*)b);
- if (h->bucket[ix] == NULL)
- h->used--;
- if (h->used < h->size20percent) /* rehash at 20% */
+ if (--h->nobjs < h->shrink_threshold)
rehash(h, 0);
return tmpl;
}
@@ -381,9 +333,7 @@ hash_remove(Hash *h, void *tmpl)
prev->next = b->next;
else
h->bucket[ix] = b->next;
- if (h->bucket[ix] == NULL)
- h->used--;
- if (h->used < h->size20percent) /* rehash at 20% */
+ if (--h->nobjs < h->shrink_threshold)
rehash(h, 0);
return (void *) b;
}
diff --git a/erts/emulator/beam/hash.h b/erts/emulator/beam/hash.h
index 87fdb360e3..e94aaa0a84 100644
--- a/erts/emulator/beam/hash.h
+++ b/erts/emulator/beam/hash.h
@@ -29,14 +29,17 @@
#include "sys.h"
#endif
-#include "erl_alloc.h"
-
typedef unsigned long HashValue;
+typedef struct hash Hash;
typedef int (*HCMP_FUN)(void*, void*);
typedef HashValue (*H_FUN)(void*);
typedef void* (*HALLOC_FUN)(void*);
typedef void (*HFREE_FUN)(void*);
+/* Meta functions */
+typedef void* (*HMALLOC_FUN)(int,size_t);
+typedef void (*HMFREE_FUN)(int,void*);
+typedef int (*HMPRINT_FUN)(int,void*,char*, ...);
/*
** This bucket must be placed in top of
@@ -55,6 +58,9 @@ typedef struct hash_functions
HCMP_FUN cmp;
HALLOC_FUN alloc;
HFREE_FUN free;
+ HMALLOC_FUN meta_alloc;
+ HMFREE_FUN meta_free;
+ HMPRINT_FUN meta_print;
} HashFunctions;
typedef struct {
@@ -65,22 +71,23 @@ typedef struct {
int depth;
} HashInfo;
-typedef struct hash
+struct hash
{
HashFunctions fun; /* Function block */
int is_allocated; /* 0 iff hash structure is on stack or is static */
- ErtsAlcType_t type;
+ int meta_alloc_type; /* argument to pass to meta_alloc and meta_free */
char* name; /* Table name (static string, for debugging) */
int size; /* Number of slots */
- int size20percent; /* 20 percent of number of slots */
- int size80percent; /* 80 percent of number of slots */
- int ix; /* Size index in size table */
- int used; /* Number of slots used */
+ int shrink_threshold;
+ int grow_threshold;
+ int size_ix; /* Size index in size table */
+ int min_size_ix; /* Never shrink table smaller than this */
+ int nobjs; /* Number of objects in table */
HashBucket** bucket; /* Vector of bucket pointers (objects) */
-} Hash;
+};
-Hash* hash_new(ErtsAlcType_t, char*, int, HashFunctions);
-Hash* hash_init(ErtsAlcType_t, Hash*, char*, int, HashFunctions);
+Hash* hash_new(int, char*, int, HashFunctions);
+Hash* hash_init(int, Hash*, char*, int, HashFunctions);
void hash_delete(Hash*);
void hash_get_info(HashInfo*, Hash*);
@@ -93,6 +100,4 @@ void* hash_erase(Hash*, void*);
void* hash_remove(Hash*, void*);
void hash_foreach(Hash*, void (*func)(void *, void *), void *);
-void erts_hash_merge(Hash* src, Hash* dst);
-
#endif
diff --git a/erts/emulator/beam/index.h b/erts/emulator/beam/index.h
index 14fab41026..99b2bdfab0 100644
--- a/erts/emulator/beam/index.h
+++ b/erts/emulator/beam/index.h
@@ -30,6 +30,10 @@
#include "hash.h"
#endif
+#ifndef ERL_ALLOC_H__
+#include "erl_alloc.h"
+#endif
+
typedef struct index_slot
{
HashBucket bucket;
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 56a04f9b7f..93c591b124 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -54,6 +54,9 @@
extern ErlDrvEntry fd_driver_entry;
extern ErlDrvEntry vanilla_driver_entry;
extern ErlDrvEntry spawn_driver_entry;
+#ifndef __WIN32__
+extern ErlDrvEntry forker_driver_entry;
+#endif
extern ErlDrvEntry *driver_tab[]; /* table of static drivers, only used during initialization */
erts_driver_t *driver_list; /* List of all drivers, static and dynamic. */
@@ -71,6 +74,9 @@ const Port erts_invalid_port = {{ERTS_INVALID_PORT}};
erts_driver_t vanilla_driver;
erts_driver_t spawn_driver;
+#ifndef __WIN32__
+erts_driver_t forker_driver;
+#endif
erts_driver_t fd_driver;
int erts_port_synchronous_ops = 0;
@@ -84,6 +90,7 @@ static void deliver_result(Eterm sender, Eterm pid, Eterm res);
static int init_driver(erts_driver_t *, ErlDrvEntry *, DE_Handle *);
static void terminate_port(Port *p);
static void pdl_init(void);
+static int driver_failure_term(ErlDrvPort ix, Eterm term, int eof);
#ifdef ERTS_SMP
static void driver_monitor_lock_pdl(Port *p);
static void driver_monitor_unlock_pdl(Port *p);
@@ -305,12 +312,9 @@ static Port *create_port(char *name,
size_t port_size, busy_port_queue_size, size;
erts_aint32_t state = ERTS_PORT_SFLG_CONNECTED;
erts_aint32_t x_pts_flgs = 0;
-#ifdef DEBUG
- /* Make sure the debug flags survives until port is freed */
- state |= ERTS_PORT_SFLG_PORT_DEBUG;
-#endif
#ifdef ERTS_SMP
+ ErtsRunQueue *runq;
if (!driver_lock) {
/* Align size for mutex following port struct */
port_size = size = ERTS_ALC_DATA_ALIGN_SIZE(sizeof(Port));
@@ -320,6 +324,12 @@ static Port *create_port(char *name,
#endif
port_size = size = ERTS_ALC_DATA_ALIGN_SIZE(sizeof(Port));
+#ifdef DEBUG
+ /* Make sure the debug flags survives until port is freed */
+ state |= ERTS_PORT_SFLG_PORT_DEBUG;
+#endif
+
+
busy_port_queue_size
= ((driver->flags & ERL_DRV_FLAG_NO_BUSY_MSGQ)
? 0
@@ -355,8 +365,12 @@ static Port *create_port(char *name,
p += sizeof(erts_mtx_t);
state |= ERTS_PORT_SFLG_PORT_SPECIFIC_LOCK;
}
- erts_smp_atomic_set_nob(&prt->run_queue,
- (erts_aint_t) erts_get_runq_current(NULL));
+ if (erts_get_scheduler_data())
+ runq = erts_get_runq_current(NULL);
+ else
+ runq = ERTS_RUNQ_IX(0);
+ erts_smp_atomic_set_nob(&prt->run_queue, (erts_aint_t) runq);
+
prt->xports = NULL;
#else
erts_atomic32_init_nob(&prt->refc, 1);
@@ -383,6 +397,7 @@ static Port *create_port(char *name,
ERTS_PTMR_INIT(prt);
erts_port_task_handle_init(&prt->timeout_task);
prt->psd = NULL;
+ prt->async_open_port = NULL;
prt->drv_data = (SWord) 0;
prt->os_pid = -1;
@@ -464,6 +479,11 @@ erts_port_free(Port *prt)
erts_port_task_fini_sched(&prt->sched);
+ if (prt->async_open_port) {
+ erts_free(ERTS_ALC_T_PRTSD, prt->async_open_port);
+ prt->async_open_port = NULL;
+ }
+
#ifdef ERTS_SMP
ASSERT(prt->lock);
if (state & ERTS_PORT_SFLG_PORT_SPECIFIC_LOCK)
@@ -1525,6 +1545,26 @@ erts_schedule_proc2port_signal(Process *c_p,
return ERTS_PORT_OP_SCHEDULED;
}
+static int
+erts_schedule_port2port_signal(Eterm port_num, ErtsProc2PortSigData *sigdp,
+ int task_flags,
+ ErtsProc2PortSigCallback callback)
+{
+ Port *prt = erts_port_lookup_raw(port_num);
+
+ if (!prt)
+ return -1;
+
+ sigdp->caller = ERTS_INVALID_PID;
+
+ return erts_port_task_schedule(prt->common.id,
+ NULL,
+ ERTS_PORT_TASK_PROC_SIG,
+ sigdp,
+ callback,
+ task_flags);
+}
+
static ERTS_INLINE void
send_badsig(Port *prt) {
ErtsProcLocks rp_locks = ERTS_PROC_LOCKS_XSIG_SEND;
@@ -2360,6 +2400,11 @@ erts_port_exit(Process *c_p,
| ERTS_PORT_SIG_FLG_BROKEN_LINK
| ERTS_PORT_SIG_FLG_FORCE_SCHED)) == 0);
+#ifndef __WIN32__
+ if (prt->drv_ptr == &forker_driver)
+ return ERTS_PORT_OP_DROPPED;
+#endif
+
if (!(flags & ERTS_PORT_SIG_FLG_FORCE_SCHED)) {
ErtsTryImmDrvCallState try_call_state
= ERTS_INIT_TRY_IMM_DRV_CALL_STATE(c_p,
@@ -2724,6 +2769,72 @@ erts_port_link(Process *c_p, Port *prt, Eterm to, Eterm *refp)
port_sig_link);
}
+static void
+init_ack_send_reply(Port *port, Eterm resp)
+{
+
+ if (!is_internal_port(resp)) {
+ Process *rp = erts_proc_lookup_raw(port->async_open_port->to);
+ erts_smp_proc_lock(rp, ERTS_PROC_LOCK_LINK);
+ erts_remove_link(&ERTS_P_LINKS(port), port->async_open_port->to);
+ erts_remove_link(&ERTS_P_LINKS(rp), port->common.id);
+ erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
+ }
+ port_sched_op_reply(port->async_open_port->to,
+ port->async_open_port->ref,
+ resp);
+
+ erts_free(ERTS_ALC_T_PRTSD, port->async_open_port);
+ port->async_open_port = NULL;
+}
+
+void
+erl_drv_init_ack(ErlDrvPort ix, ErlDrvData res) {
+ Port *port = erts_drvport2port(ix);
+ SWord err_type = (SWord)res;
+ Eterm resp;
+
+ if (port == ERTS_INVALID_ERL_DRV_PORT && port->async_open_port)
+ return;
+
+ if (port->async_open_port) {
+ switch(err_type) {
+ case -3:
+ resp = am_badarg;
+ break;
+ case -2: {
+ char *str = erl_errno_id(errno);
+ resp = erts_atom_put((byte *) str, strlen(str),
+ ERTS_ATOM_ENC_LATIN1, 1);
+ break;
+ }
+ case -1:
+ resp = am_einval;
+ break;
+ default:
+ resp = port->common.id;
+ break;
+ }
+
+ init_ack_send_reply(port, resp);
+
+ if (err_type == -1 || err_type == -2 || err_type == -3)
+ driver_failure_term(ix, am_normal, 0);
+ port->drv_data = err_type;
+ }
+}
+
+void
+erl_drv_set_os_pid(ErlDrvPort ix, ErlDrvSInt pid) {
+ Port *port = erts_drvport2port(ix);
+
+ if (port == ERTS_INVALID_ERL_DRV_PORT)
+ return;
+
+ port->os_pid = (SWord)pid;
+
+}
+
void erts_init_io(int port_tab_size,
int port_tab_size_ignore_files,
int legacy_port_tab)
@@ -2786,6 +2897,9 @@ void erts_init_io(int port_tab_size,
init_driver(&fd_driver, &fd_driver_entry, NULL);
init_driver(&vanilla_driver, &vanilla_driver_entry, NULL);
init_driver(&spawn_driver, &spawn_driver_entry, NULL);
+#ifndef __WIN32__
+ init_driver(&forker_driver, &forker_driver_entry, NULL);
+#endif
erts_init_static_drivers();
for (dp = driver_tab; *dp != NULL; dp++)
erts_add_driver_entry(*dp, NULL, 1);
@@ -2847,6 +2961,9 @@ void erts_lcnt_enable_io_lock_count(int enable) {
lcnt_enable_drv_lock_count(&vanilla_driver, enable);
lcnt_enable_drv_lock_count(&spawn_driver, enable);
+#ifndef __WIN32__
+ lcnt_enable_drv_lock_count(&forker_driver, enable);
+#endif
lcnt_enable_drv_lock_count(&fd_driver, enable);
/* enable lock counting in all drivers */
for (dp = driver_list; dp; dp = dp->next) {
@@ -3885,7 +4002,7 @@ port_sig_control(Port *prt,
Uint hsz, rsz;
int control_flags;
- rp = erts_proc_lookup_raw(sigdp->caller);
+ rp = sigdp->caller == ERTS_INVALID_PID ? NULL : erts_proc_lookup_raw(sigdp->caller);
if (!rp)
goto done;
@@ -3921,7 +4038,8 @@ port_sig_control(Port *prt,
/* failure */
- port_sched_op_reply(sigdp->caller, sigdp->ref, am_badarg);
+ if (sigdp->caller != ERTS_INVALID_PID)
+ port_sched_op_reply(sigdp->caller, sigdp->ref, am_badarg);
done:
@@ -3931,6 +4049,23 @@ done:
return ERTS_PORT_REDS_CONTROL;
}
+/*
+ * This is an asynchronous control call. I.e. it will not return anything
+ * to the caller.
+ */
+int
+erl_drv_port_control(Eterm port_num, char cmd, char* buff, ErlDrvSizeT size)
+{
+ ErtsProc2PortSigData *sigdp = erts_port_task_alloc_p2p_sig_data();
+
+ sigdp->flags = ERTS_P2P_SIG_TYPE_CONTROL | ERTS_P2P_SIG_DATA_FLG_REPLY;
+ sigdp->u.control.binp = NULL;
+ sigdp->u.control.command = cmd;
+ sigdp->u.control.bufp = buff;
+ sigdp->u.control.size = size;
+
+ return erts_schedule_port2port_signal(port_num, sigdp, 0, port_sig_control);
+}
ErtsPortOpResult
erts_port_control(Process* c_p,
@@ -4702,6 +4837,10 @@ print_port_info(Port *p, int to, void *arg)
erts_print(to, arg, "Port is a file: %s\n",p->name);
} else if (p->drv_ptr == &spawn_driver) {
erts_print(to, arg, "Port controls external process: %s\n",p->name);
+#ifndef __WIN32__
+ } else if (p->drv_ptr == &forker_driver) {
+ erts_print(to, arg, "Port controls forker process: %s\n",p->name);
+#endif
} else {
erts_print(to, arg, "Port controls linked-in driver: %s\n",p->name);
}
@@ -6933,6 +7072,9 @@ driver_failure_term(ErlDrvPort ix, Eterm term, int eof)
if (prt == ERTS_INVALID_ERL_DRV_PORT)
return -1;
ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(prt));
+
+ if (prt->async_open_port)
+ init_ack_send_reply(prt, prt->common.id);
if (eof)
flush_linebuf_messages(prt, state);
if (state & ERTS_PORT_SFLG_CLOSING) {
diff --git a/erts/emulator/beam/module.c b/erts/emulator/beam/module.c
index f6794c012f..f5c7b177d3 100644
--- a/erts/emulator/beam/module.c
+++ b/erts/emulator/beam/module.c
@@ -103,6 +103,9 @@ void init_module_table(void)
f.cmp = (HCMP_FUN) module_cmp;
f.alloc = (HALLOC_FUN) module_alloc;
f.free = (HFREE_FUN) module_free;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
for (i = 0; i < ERTS_NUM_CODE_IX; i++) {
erts_index_init(ERTS_ALC_T_MODULE_TABLE, &module_tables[i], "module_code",
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab
index 46fefb88af..081c4108a0 100644
--- a/erts/emulator/beam/ops.tab
+++ b/erts/emulator/beam/ops.tab
@@ -1036,7 +1036,7 @@ call_bif e
bif0 u$bif:erlang:self/0 Dst=d => self Dst
bif0 u$bif:erlang:node/0 Dst=d => node Dst
-bif1 Fail Bif=u$bif:erlang:get/1 Src=s Dst=d => i_get Src Dst
+bif1 Fail Bif=u$bif:erlang:get/1 Src=s Dst=d => gen_get(Src, Dst)
bif2 Jump=j u$bif:erlang:element/2 S1=s S2=xy Dst=d => gen_element(Jump, S1, S2, Dst)
@@ -1045,6 +1045,7 @@ bif1 p Bif S1 Dst => bif1_body Bif S1 Dst
bif2 p Bif S1 S2 Dst => i_bif2_body Bif S1 S2 Dst
bif2 Fail Bif S1 S2 Dst => i_bif2 Fail Bif S1 S2 Dst
+i_get_hash c I d
i_get s d
%macro: self Self
diff --git a/erts/emulator/beam/register.c b/erts/emulator/beam/register.c
index 7ade8bca0f..fdb6cbc813 100644
--- a/erts/emulator/beam/register.c
+++ b/erts/emulator/beam/register.c
@@ -151,6 +151,9 @@ void init_register_table(void)
f.cmp = (HCMP_FUN) reg_cmp;
f.alloc = (HALLOC_FUN) reg_alloc;
f.free = (HFREE_FUN) reg_free;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
hash_init(ERTS_ALC_T_REG_TABLE, &process_reg, "process_reg",
PREG_HASH_SIZE, f);
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index 2170d416c8..53f8313daa 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -87,15 +87,6 @@
# define NO_FPE_SIGNALS
#endif
-#ifdef DISABLE_CHILD_WAITER_THREAD
-#undef ENABLE_CHILD_WAITER_THREAD
-#endif
-
-#if defined(ERTS_SMP) && !defined(DISABLE_CHILD_WAITER_THREAD)
-#undef ENABLE_CHILD_WAITER_THREAD
-#define ENABLE_CHILD_WAITER_THREAD 1
-#endif
-
#define ERTS_I64_LITERAL(X) X##LL
#define ErtsInArea(ptr,start,nbytes) \
@@ -746,6 +737,7 @@ void erts_sys_main_thread(void);
extern int erts_sys_prepare_crash_dump(int secs);
extern void erts_sys_pre_init(void);
extern void erl_sys_init(void);
+extern void erl_sys_late_init(void);
extern void erl_sys_args(int *argc, char **argv);
extern void erl_sys_schedule(int);
void sys_tty_reset(int);
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 1e3360c2b1..e3f5060117 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1997-2013. All Rights Reserved.
+ * Copyright Ericsson AB 1997-2015. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -5762,9 +5762,9 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
int arg_sz;
enum PacketParseType old_htype = desc->htype;
int old_active = desc->active;
- int propagate = 0; /* Set to 1 if failure to set this option
- should be propagated to erlang (not all
- errors can be propagated for BC reasons) */
+ int propagate; /* Set to 1 if failure to set this option
+ should be propagated to erlang (not all
+ errors can be propagated for BC reasons) */
int res;
#ifdef HAVE_SCTP
/* SCTP sockets are treated completely separately: */
@@ -5781,6 +5781,7 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
arg_ptr = (char*) &ival;
arg_sz = sizeof(ival);
proto = SOL_SOCKET;
+ propagate = 0;
switch(opt) {
case INET_LOPT_HEADER:
diff --git a/erts/emulator/hipe/hipe_bif0.c b/erts/emulator/hipe/hipe_bif0.c
index 00936b6b8a..6f495b8825 100644
--- a/erts/emulator/hipe/hipe_bif0.c
+++ b/erts/emulator/hipe/hipe_bif0.c
@@ -509,6 +509,9 @@ static void init_const_term_table(void)
f.cmp = (HCMP_FUN) const_term_cmp;
f.alloc = (HALLOC_FUN) const_term_alloc;
f.free = (HFREE_FUN) NULL;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
hash_init(ERTS_ALC_T_HIPE, &const_term_table, "const_term_table", 97, f);
}
@@ -717,6 +720,9 @@ static void init_nbif_table(void)
f.cmp = (HCMP_FUN) nbif_cmp;
f.alloc = (HALLOC_FUN) nbif_alloc;
f.free = NULL;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
hash_init(ERTS_ALC_T_NBIF_TABLE, &nbif_table, "nbif_table", 500, f);
@@ -810,6 +816,9 @@ static void init_primop_table(void)
f.cmp = (HCMP_FUN) primop_cmp;
f.alloc = (HALLOC_FUN) primop_alloc;
f.free = NULL;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
hash_init(ERTS_ALC_T_HIPE, &primop_table, "primop_table", 50, f);
@@ -1828,6 +1837,9 @@ static void init_modinfo_table(void)
f.cmp = (HCMP_FUN) modinfo_cmp;
f.alloc = (HALLOC_FUN) modinfo_alloc;
f.free = (HFREE_FUN) NULL;
+ f.meta_alloc = (HMALLOC_FUN) erts_alloc;
+ f.meta_free = (HMFREE_FUN) erts_free;
+ f.meta_print = (HMPRINT_FUN) erts_print;
hash_init(ERTS_ALC_T_HIPE, &modinfo_table, "modinfo_table", 11, f);
}
diff --git a/erts/emulator/hipe/hipe_native_bif.c b/erts/emulator/hipe/hipe_native_bif.c
index ad8fb685e5..1bfee94e9e 100644
--- a/erts/emulator/hipe/hipe_native_bif.c
+++ b/erts/emulator/hipe/hipe_native_bif.c
@@ -164,7 +164,7 @@ void hipe_select_msg(Process *p)
JOIN_MESSAGE(p);
CANCEL_TIMER(p); /* calls erts_cancel_proc_timer() */
erts_save_message_in_proc(p, msgp);
- p->flags &= ~F_DISABLE_GC;
+ p->flags &= ~F_DELAY_GC;
if (ERTS_IS_GC_DESIRED(p)) {
/*
* We want to GC soon but we leave a few
@@ -519,7 +519,7 @@ Eterm hipe_check_get_msg(Process *c_p)
{
ErtsMessage *msgp;
- c_p->flags |= F_DISABLE_GC;
+ c_p->flags |= F_DELAY_GC;
next_message:
@@ -541,7 +541,7 @@ Eterm hipe_check_get_msg(Process *c_p)
/* XXX: BEAM doesn't need this */
c_p->hipe_smp.have_receive_locks = 1;
#endif
- c_p->flags &= ~F_DISABLE_GC;
+ c_p->flags &= ~F_DELAY_GC;
return THE_NON_VALUE;
#ifdef ERTS_SMP
}
diff --git a/erts/emulator/hipe/hipe_x86_signal.c b/erts/emulator/hipe/hipe_x86_signal.c
index 69d4ea10c2..b7dae88417 100644
--- a/erts/emulator/hipe/hipe_x86_signal.c
+++ b/erts/emulator/hipe/hipe_x86_signal.c
@@ -234,7 +234,29 @@ static void do_init(void)
#define INIT() do { if (!init_done()) do_init(); } while (0)
#endif /* __sun__ */
-#if !(defined(__GLIBC__) || defined(__DARWIN__) || defined(__NetBSD__) || defined(__sun__))
+#if defined(__FreeBSD__)
+/*
+ * This is a copy of Darwin code for FreeBSD.
+ * CAVEAT: detailed semantics are not verified yet.
+ */
+#include <dlfcn.h>
+static int (*__next_sigaction)(int, const struct sigaction*, struct sigaction*);
+#define init_done() (__next_sigaction != 0)
+extern int _sigaction(int, const struct sigaction*, struct sigaction*);
+#define __SIGACTION _sigaction
+static void do_init(void)
+{
+ __next_sigaction = dlsym(RTLD_NEXT, "sigaction");
+ if (__next_sigaction != 0)
+ return;
+ perror("dlsym_freebsd");
+ abort();
+}
+#define _NSIG NSIG
+#define INIT() do { if (!init_done()) do_init(); } while (0)
+#endif /* __FreeBSD__ */
+
+#if !(defined(__GLIBC__) || defined(__DARWIN__) || defined(__NetBSD__) || defined(__FreeBSD__) || defined(__sun__))
/*
* Unknown libc -- assume musl. Note: musl deliberately does not provide a musl-specific
* feature test macro, so we cannot check for it.
@@ -259,7 +281,7 @@ static void do_init(void)
#define _NSIG NSIG
#endif
#define INIT() do { if (!init_done()) do_init(); } while (0)
-#endif /* !(__GLIBC__ || __DARWIN__ || __NetBSD__ || __sun__) */
+#endif /* !(__GLIBC__ || __DARWIN__ || __NetBSD__ || __FreeBSD__ || __sun__) */
#if !defined(__NetBSD__)
/*
@@ -299,7 +321,7 @@ int __SIGACTION(int signum, const struct sigaction *act, struct sigaction *oldac
/*
* This catches the application's own sigaction() calls.
*/
-#if !defined(__DARWIN__) && !defined(__NetBSD__)
+#if !defined(__DARWIN__) && !defined(__NetBSD__) && !defined(__FreeBSD__)
int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact)
{
return my_sigaction(signum, act, oldact);
diff --git a/erts/emulator/sys/unix/erl_child_setup.c b/erts/emulator/sys/unix/erl_child_setup.c
index a3c5c20641..4e61530cf1 100644
--- a/erts/emulator/sys/unix/erl_child_setup.c
+++ b/erts/emulator/sys/unix/erl_child_setup.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2002-2009. All Rights Reserved.
+ * Copyright Ericsson AB 2002-2015. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -19,109 +19,233 @@
*/
/*
- * After a vfork() (or fork()) the child exec()s to this program which
- * sets up the child and exec()s to the user program (see spawn_start()
- * in sys.c and ticket OTP-4389).
+ * This program is started at erts startup and all fork's that
+ * have to be done are done in here. This is done for a couple
+ * of reasons:
+ * - Allow usage of fork without a memory explosion.
+ * -- we do not want to use vfork, as it blocks the VM
+ * until the execv is done, and if the program that
+ * is to be executed is on an NFS that is unavailable,
+ * the execv can block for a very long time.
+ * -- we cannot do fork inside the VM as that would temporarily
+ * duplicate the memory usage of the VM per parallel exec.
+ *
+ * Some implementation notes:
+ * - A single Unix Domain Socket is setup in between the VM and
+ * this program. Over that UDS the file descriptors that should
+ * be used to talk to the child program are sent.
+ * The actual command to execute, together with options and the
+ * environment, is sent over the pipe represented by the
+ * file descriptors mentioned above. We don't send the
+ * command over the UDS as that would increase the likely hood
+ * that it's buffer would be full.
+ *
+ * - Since it is this program that execv's, it has to take care of
+ * all the SIGCHLD signals that the child programs generate. The
+ * signals are received and the pid+exit reason is sent as data
+ * on the UDS to the VM. The VM is then able to map the pid to the
+ * port of the child program that just exited and deliver the status
+ * code if requested.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
-#define NEED_CHILD_SETUP_DEFINES
-#include "sys.h"
-#include "erl_misc_utils.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/wait.h>
-#ifdef SIG_SIGSET /* Old SysV */
-void sys_sigrelease(int sig)
+#define WANT_NONBLOCKING
+
+#include "erl_driver.h"
+#include "sys_uds.h"
+#include "hash.h"
+#include "erl_child_setup.h"
+
+#define SET_CLOEXEC(fd) fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC)
+
+#if defined(__ANDROID__)
+#define SHELL "/system/bin/sh"
+#else
+#define SHELL "/bin/sh"
+#endif /* __ANDROID__ */
+
+//#define HARD_DEBUG
+#ifdef HARD_DEBUG
+#define DEBUG_PRINT(fmt, ...) fprintf(stderr, fmt "\r\n", ##__VA_ARGS__)
+#else
+#define DEBUG_PRINT(fmt, ...)
+#endif
+
+#define ABORT(fmt, ...) do { \
+ fprintf(stderr, "erl_child_setup: " fmt "\r\n", ##__VA_ARGS__); \
+ abort(); \
+ } while(0)
+
+#ifdef DEBUG
+void
+erl_assert_error(const char* expr, const char* func, const char* file, int line)
{
- sigrelse(sig);
+ fflush(stdout);
+ fprintf(stderr, "%s:%d:%s() Assertion failed: %s\n",
+ file, line, func, expr);
+ fflush(stderr);
+ abort();
}
-#else /* !SIG_SIGSET */
-#ifdef SIG_SIGNAL /* Old BSD */
-sys_sigrelease(int sig)
+#endif
+
+void sys_sigblock(int sig)
{
- sigsetmask(sigblock(0) & ~sigmask(sig));
+ sigset_t mask;
+
+ sigemptyset(&mask);
+ sigaddset(&mask, sig);
+ sigprocmask(SIG_BLOCK, &mask, (sigset_t *)NULL);
}
-#else /* !SIG_SIGNAL */ /* The True Way - POSIX!:-) */
+
void sys_sigrelease(int sig)
{
sigset_t mask;
-
sigemptyset(&mask);
sigaddset(&mask, sig);
sigprocmask(SIG_UNBLOCK, &mask, (sigset_t *)NULL);
}
-#endif /* !SIG_SIGNAL */
-#endif /* !SIG_SIGSET */
-
-#if defined(__ANDROID__)
-static int system_properties_fd(void);
-#endif /* __ANDROID__ */
-#if defined(__ANDROID__)
-#define SHELL "/system/bin/sh"
-#else
-#define SHELL "/bin/sh"
-#endif /* __ANDROID__ */
+static void add_os_pid_to_port_id_mapping(Eterm, pid_t);
+static Eterm get_port_id(pid_t);
+static int forker_hash_init(void);
+static int max_files = -1;
+static int sigchld_pipe[2];
-int
-main(int argc, char *argv[])
+static int
+start_new_child(int pipes[])
{
- int i, from, to;
- int erts_spawn_executable = 0;
+ int size, res, i, pos = 0;
+ char *buff, *o_buff;
+
+ char *cmd, *wd, **new_environ, **args = NULL;
+
+ Sint cnt, flags;
- /* OBSERVE!
- * Keep child setup after fork() (implemented in sys.c) up to date
- * if changes are made here.
- */
+ /* only child executes here */
- if (argc != CS_ARGV_NO_OF_ARGS) {
- if (argc < CS_ARGV_NO_OF_ARGS) {
- return 1;
- } else {
- erts_spawn_executable = 1;
- }
+ do {
+ res = read(pipes[0], (char*)&size, sizeof(size));
+ } while(res < 0 && (errno == EINTR || errno == ERRNO_BLOCK));
+
+ if (res <= 0) {
+ goto child_error;
}
- if (strcmp("false", argv[CS_ARGV_UNBIND_IX]) != 0)
- if (erts_unbind_from_cpu_str(argv[CS_ARGV_UNBIND_IX]) != 0)
- return 1;
+ buff = malloc(size);
+
+ DEBUG_PRINT("size = %d", size);
+
+ do {
+ if ((res = read(pipes[0], buff + pos, size - pos)) < 0) {
+ if (errno == ERRNO_BLOCK || errno == EINTR)
+ continue;
+ goto child_error;
+ }
+ if (res == 0) {
+ errno = EPIPE;
+ goto child_error;
+ }
+ pos += res;
+ } while(size - pos != 0);
+
+ o_buff = buff;
+
+ flags = get_int32(buff);
+ buff += sizeof(Sint32);
- for (i = 0; i < CS_ARGV_NO_OF_DUP2_OPS; i++) {
- if (argv[CS_ARGV_DUP2_OP_IX(i)][0] == '-'
- && argv[CS_ARGV_DUP2_OP_IX(i)][1] == '\0')
- break;
- if (sscanf(argv[CS_ARGV_DUP2_OP_IX(i)], "%d:%d", &from, &to) != 2)
- return 1;
- if (dup2(from, to) < 0)
- return 1;
+ DEBUG_PRINT("flags = %d", flags);
+
+ cmd = buff;
+ buff += strlen(buff) + 1;
+ if (*buff == '\0') {
+ wd = NULL;
+ } else {
+ wd = buff;
+ buff += strlen(buff) + 1;
}
+ buff++;
- if (sscanf(argv[CS_ARGV_FD_CR_IX], "%d:%d", &from, &to) != 2)
- return 1;
+ DEBUG_PRINT("wd = %s", wd);
-#if defined(HAVE_CLOSEFROM)
- closefrom(from);
-#elif defined(__ANDROID__)
- if (from <= to) {
- int spfd = system_properties_fd();
- for (i = from; i <= to; i++) {
- if (i != spfd) {
- (void) close(i);
- }
- }
+ cnt = get_int32(buff);
+ buff += sizeof(Sint32);
+ new_environ = malloc(sizeof(char*)*(cnt + 1));
+
+ DEBUG_PRINT("env_len = %ld", cnt);
+ for (i = 0; i < cnt; i++, buff++) {
+ new_environ[i] = buff;
+ while(*buff != '\0') buff++;
}
-#else /* !__ANDROID__ */
- for (i = from; i <= to; i++) {
- (void) close(i);
+ new_environ[cnt] = NULL;
+
+ if (o_buff + size != buff) {
+ /* This is a spawn executable call */
+ cnt = get_int32(buff);
+ buff += sizeof(Sint32);
+ args = malloc(sizeof(char*)*(cnt + 1));
+ for (i = 0; i < cnt; i++, buff++) {
+ args[i] = buff;
+ while(*buff != '\0') buff++;
+ }
+ args[cnt] = NULL;
}
-#endif /* HAVE_CLOSEFROM */
- if (!(argv[CS_ARGV_WD_IX][0] == '.' && argv[CS_ARGV_WD_IX][1] == '\0')
- && chdir(argv[CS_ARGV_WD_IX]) < 0)
- return 1;
+ if (o_buff + size != buff) {
+ errno = EINVAL;
+ goto child_error;
+ }
+
+ DEBUG_PRINT("read ack");
+ do {
+ ErtsSysForkerProto proto;
+ res = read(pipes[0], &proto, sizeof(proto));
+ if (res > 0) {
+ ASSERT(proto.action == ErtsSysForkerProtoAction_Ack);
+ ASSERT(res == sizeof(proto));
+ }
+ } while(res < 0 && (errno == EINTR || errno == ERRNO_BLOCK));
+ if (res < 1) {
+ errno = EPIPE;
+ goto child_error;
+ }
+
+ DEBUG_PRINT("Do that forking business: '%s'\n",cmd);
+
+ /* When the dup2'ing below is done, only
+ fd's 0, 1, 2 and maybe 3, 4 should survive the
+ exec. All other fds (i.e. the unix domain sockets
+ and stray pipe ends) should have CLOEXEC set on them
+ so they will be closed when the exec happens */
+ if (flags & FORKER_FLAG_USE_STDIO) {
+ /* stdin for process */
+ if (flags & FORKER_FLAG_DO_WRITE &&
+ dup2(pipes[0], 0) < 0)
+ goto child_error;
+ /* stdout for process */
+ if (flags & FORKER_FLAG_DO_READ &&
+ dup2(pipes[1], 1) < 0)
+ goto child_error;
+ }
+ else { /* XXX will fail if pipes[0] == 4 (unlikely..) */
+ if (flags & FORKER_FLAG_DO_READ && dup2(pipes[1], 4) < 0)
+ goto child_error;
+ if (flags & FORKER_FLAG_DO_WRITE && dup2(pipes[0], 3) < 0)
+ goto child_error;
+ }
+
+ if (dup2(pipes[2], 2) < 0)
+ goto child_error;
+
+ if (wd && chdir(wd) < 0)
+ goto child_error;
#if defined(USE_SETPGRP_NOARGS) /* SysV */
(void) setpgrp();
@@ -131,34 +255,301 @@ main(int argc, char *argv[])
(void) setsid();
#endif
+ close(pipes[0]);
+ close(pipes[1]);
+ close(pipes[2]);
+
sys_sigrelease(SIGCHLD);
- sys_sigrelease(SIGINT);
- sys_sigrelease(SIGUSR1);
-
- if (erts_spawn_executable) {
- if (argv[CS_ARGV_NO_OF_ARGS + 1] == NULL) {
- execl(argv[CS_ARGV_NO_OF_ARGS],argv[CS_ARGV_NO_OF_ARGS],
- (char *) NULL);
- } else {
- execv(argv[CS_ARGV_NO_OF_ARGS],&(argv[CS_ARGV_NO_OF_ARGS + 1]));
- }
+
+ if (args) {
+ /* spawn_executable */
+ execve(cmd, args, new_environ);
} else {
- execl(SHELL, "sh", "-c", argv[CS_ARGV_CMD_IX], (char *) NULL);
+ execle(SHELL, "sh", "-c", cmd, (char *) NULL, new_environ);
}
- return 1;
+child_error:
+ DEBUG_PRINT("exec error: %d\r\n",errno);
+ _exit(128 + errno);
+}
+
+
+/*
+ * [OTP-3906]
+ * Solaris signal management gets confused when threads are used and a
+ * lot of child processes dies. The confusion results in that SIGCHLD
+ * signals aren't delivered to the emulator which in turn results in
+ * a lot of defunct processes in the system.
+ *
+ * The problem seems to appear when a signal is frequently
+ * blocked/unblocked at the same time as the signal is frequently
+ * propagated. The child waiter thread is a workaround for this problem.
+ * The SIGCHLD signal is always blocked (in all threads), and the child
+ * waiter thread fetches the signal by a call to sigwait(). See
+ * child_waiter().
+ *
+ * This should be a non-issue since the fork:ing was moved outside of
+ * the emulator into erl_child_setup. I'm leaving the comment here
+ * for posterity. */
+
+static void handle_sigchld(int sig) {
+ int buff[2], res;
+
+ sys_sigblock(SIGCHLD);
+
+ while ((buff[0] = waitpid((pid_t)(-1), buff+1, WNOHANG)) > 0) {
+ do {
+ res = write(sigchld_pipe[1], buff, sizeof(buff));
+ } while (res < 0 && errno == EINTR);
+ if (res <= 0)
+ ABORT("Failed to write to sigchld_pipe (%d): %d (%d)", sigchld_pipe[1], res, errno);
+ DEBUG_PRINT("Reap child %d (%d)", buff[0], buff[1]);
+ }
+
+ sys_sigrelease(SIGCHLD);
}
#if defined(__ANDROID__)
static int system_properties_fd(void)
{
- int fd;
+ static int fd = -2;
char *env;
+ if (fd != -2) return fd;
env = getenv("ANDROID_PROPERTY_WORKSPACE");
if (!env) {
+ fd = -1;
return -1;
}
fd = atoi(env);
return fd;
}
#endif /* __ANDROID__ */
+
+int
+main(int argc, char *argv[])
+{
+ /* This fd should be open from beam */
+ int uds_fd = 3, max_fd = 3;
+#ifndef HAVE_CLOSEFROM
+ int i;
+#endif
+ struct sigaction sa;
+
+ if (argc < 1 || sscanf(argv[1],"%d",&max_files) != 1) {
+ ABORT("Invalid arguments to child_setup");
+ }
+
+/* We close all fds except the uds from beam.
+ All other fds from now on will have the
+ CLOEXEC flags set on them. This means that we
+ only have to close a very limited number of fds
+ after we fork before the exec. */
+#if defined(HAVE_CLOSEFROM)
+ closefrom(4);
+#else
+ for (i = 4; i < max_files; i++)
+#if defined(__ANDROID__)
+ if (i != system_properties_fd())
+#endif
+ (void) close(i);
+#endif
+
+ if (pipe(sigchld_pipe) < 0) {
+ ABORT("Failed to setup sigchld pipe (%d)", errno);
+ }
+
+ SET_CLOEXEC(sigchld_pipe[0]);
+ SET_CLOEXEC(sigchld_pipe[1]);
+
+ max_fd = max_fd < sigchld_pipe[0] ? sigchld_pipe[0] : max_fd;
+
+ sa.sa_handler = &handle_sigchld;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
+ if (sigaction(SIGCHLD, &sa, 0) == -1) {
+ perror(0);
+ exit(1);
+ }
+
+ forker_hash_init();
+
+ SET_CLOEXEC(uds_fd);
+
+ DEBUG_PRINT("Starting forker %d", max_files);
+
+ while (1) {
+ fd_set read_fds;
+ int res;
+ FD_ZERO(&read_fds);
+ FD_SET(uds_fd, &read_fds);
+ FD_SET(sigchld_pipe[0], &read_fds);
+ DEBUG_PRINT("child_setup selecting on %d, %d (%d)",
+ uds_fd, sigchld_pipe[0], max_fd);
+ res = select(max_fd+1, &read_fds, NULL, NULL, NULL);
+
+ if (res < 0) {
+ if (errno == EINTR) continue;
+ ABORT("Select failed: %d (%d)",res, errno);
+ }
+
+ if (FD_ISSET(uds_fd, &read_fds)) {
+ int pipes[3], res, os_pid;
+ ErtsSysForkerProto proto;
+ errno = 0;
+ if ((res = sys_uds_read(uds_fd, (char*)&proto, sizeof(proto),
+ pipes, 3, MSG_DONTWAIT)) < 0) {
+ if (errno == EINTR)
+ continue;
+ DEBUG_PRINT("erl_child_setup failed to read from uds: %d, %d", res, errno);
+ _exit(0);
+ }
+
+ if (res == 0) {
+ DEBUG_PRINT("uds was closed!");
+ _exit(0);
+ }
+ /* Since we use unix domain sockets and send the entire data in
+ one go we *should* get the entire payload at once. */
+ ASSERT(res == sizeof(proto));
+ ASSERT(proto.action == ErtsSysForkerProtoAction_Start);
+
+ sys_sigblock(SIGCHLD);
+
+ errno = 0;
+
+ os_pid = fork();
+ if (os_pid == 0)
+ start_new_child(pipes);
+
+ add_os_pid_to_port_id_mapping(proto.u.start.port_id, os_pid);
+
+ /* We write an ack here, but expect the reply on
+ the pipes[0] inside the fork */
+ proto.action = ErtsSysForkerProtoAction_Go;
+ proto.u.go.os_pid = os_pid;
+ proto.u.go.error_number = errno;
+ while (write(pipes[1], &proto, sizeof(proto)) < 0 && errno == EINTR)
+ ; /* remove gcc warning */
+
+#ifdef FORKER_PROTO_START_ACK
+ proto.action = ErtsSysForkerProtoAction_StartAck;
+ while (write(uds_fd, &proto, sizeof(proto)) < 0 && errno == EINTR)
+ ; /* remove gcc warning */
+#endif
+
+ sys_sigrelease(SIGCHLD);
+ close(pipes[0]);
+ close(pipes[1]);
+ close(pipes[2]);
+ }
+
+ if (FD_ISSET(sigchld_pipe[0], &read_fds)) {
+ int ibuff[2];
+ ErtsSysForkerProto proto;
+ res = read(sigchld_pipe[0], ibuff, sizeof(ibuff));
+ if (res <= 0) {
+ if (errno == EINTR)
+ continue;
+ ABORT("Failed to read from sigchld pipe: %d (%d)", res, errno);
+ }
+
+ proto.u.sigchld.port_id = get_port_id((pid_t)(ibuff[0]));
+
+ if (proto.u.sigchld.port_id == THE_NON_VALUE)
+ continue; /* exit status report not requested */
+
+ proto.action = ErtsSysForkerProtoAction_SigChld;
+ proto.u.sigchld.error_number = ibuff[1];
+ DEBUG_PRINT("send %s to %d", buff, uds_fd);
+ if (write(uds_fd, &proto, sizeof(proto)) < 0) {
+ if (errno == EINTR)
+ continue;
+ /* The uds was close, which most likely means that the VM
+ has exited. This will be detected when we try to read
+ from the uds_fd. */
+ DEBUG_PRINT("Failed to write to uds: %d (%d)", uds_fd, errno);
+ }
+ }
+ }
+ return 1;
+}
+
+typedef struct exit_status {
+ HashBucket hb;
+ pid_t os_pid;
+ Eterm port_id;
+} ErtsSysExitStatus;
+
+static Hash *forker_hash;
+
+static void add_os_pid_to_port_id_mapping(Eterm port_id, pid_t os_pid)
+{
+ if (port_id != THE_NON_VALUE) {
+ /* exit status report requested */
+ ErtsSysExitStatus es;
+ es.os_pid = os_pid;
+ es.port_id = port_id;
+ hash_put(forker_hash, &es);
+ }
+}
+
+static Eterm get_port_id(pid_t os_pid)
+{
+ ErtsSysExitStatus est, *es;
+ Eterm port_id;
+ est.os_pid = os_pid;
+ es = hash_remove(forker_hash, &est);
+ if (!es) return THE_NON_VALUE;
+ port_id = es->port_id;
+ free(es);
+ return port_id;
+}
+
+static int fcmp(void *a, void *b)
+{
+ ErtsSysExitStatus *sa = a;
+ ErtsSysExitStatus *sb = b;
+ return !(sa->os_pid == sb->os_pid);
+}
+
+static HashValue fhash(void *e)
+{
+ ErtsSysExitStatus *se = e;
+ Uint32 val = se->os_pid;
+ val = (val+0x7ed55d16) + (val<<12);
+ val = (val^0xc761c23c) ^ (val>>19);
+ val = (val+0x165667b1) + (val<<5);
+ val = (val+0xd3a2646c) ^ (val<<9);
+ val = (val+0xfd7046c5) + (val<<3);
+ val = (val^0xb55a4f09) ^ (val>>16);
+ return val;
+}
+
+static void *falloc(void *e)
+{
+ ErtsSysExitStatus *se = e;
+ ErtsSysExitStatus *ne = malloc(sizeof(ErtsSysExitStatus));
+ ne->os_pid = se->os_pid;
+ ne->port_id = se->port_id;
+ return ne;
+}
+
+static void *meta_alloc(int type, size_t size) { return malloc(size); }
+static void meta_free(int type, void *p) { free(p); }
+
+static int forker_hash_init(void)
+{
+ HashFunctions forker_hash_functions;
+ forker_hash_functions.hash = fhash;
+ forker_hash_functions.cmp = fcmp;
+ forker_hash_functions.alloc = falloc;
+ forker_hash_functions.free = free;
+ forker_hash_functions.meta_alloc = meta_alloc;
+ forker_hash_functions.meta_free = meta_free;
+ forker_hash_functions.meta_print = NULL;
+
+ forker_hash = hash_new(0, "forker_hash",
+ 16, forker_hash_functions);
+
+ return 1;
+}
diff --git a/erts/emulator/sys/unix/erl_child_setup.h b/erts/emulator/sys/unix/erl_child_setup.h
new file mode 100644
index 0000000000..a28b136bfc
--- /dev/null
+++ b/erts/emulator/sys/unix/erl_child_setup.h
@@ -0,0 +1,77 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2015-2015. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ *
+ * This file defines the interface inbetween erts and child_setup.
+ */
+
+#ifndef _ERL_UNIX_FORKER_H
+#define _ERL_UNIX_FORKER_H
+
+#include "sys.h"
+
+#ifdef __FreeBSD__
+/* The freebsd sendmsg man page explicitly states that
+ you should not close fds before they are known
+ to have reached the other side, so this Ack protects
+ against that. */
+#define FORKER_PROTO_START_ACK 1
+#endif
+
+#define FORKER_ARGV_NO_OF_ARGS 3
+#define FORKER_ARGV_PROGNAME_IX 0 /* Program name */
+#define FORKER_ARGV_MAX_FILES 1 /* max_files */
+
+#define FORKER_FLAG_USE_STDIO (1 << 0) /* dup the pipe to stdin/stderr */
+#define FORKER_FLAG_EXIT_STATUS (1 << 1) /* send the exit status to parent */
+#define FORKER_FLAG_DO_READ (1 << 2) /* dup write fd */
+#define FORKER_FLAG_DO_WRITE (1 << 3) /* dup read fd */
+
+#if SIZEOF_VOID_P == SIZEOF_LONG
+typedef unsigned long ErtsSysPortId;
+#elif SIZEOF_VOID_P == SIZEOF_INT
+typedef unsigned int ErtsSysPortId;
+#elif SIZEOF_VOID_P == SIZEOF_LONG_LONG
+typedef unsigned long long ErtsSysPortId;
+#endif
+
+typedef struct ErtsSysForkerProto_ {
+ enum {
+ ErtsSysForkerProtoAction_Start,
+ ErtsSysForkerProtoAction_StartAck,
+ ErtsSysForkerProtoAction_Go,
+ ErtsSysForkerProtoAction_SigChld,
+ ErtsSysForkerProtoAction_Ack
+ } action;
+ union {
+ struct {
+ ErtsSysPortId port_id;
+ int fds[3];
+ } start;
+ struct {
+ pid_t os_pid;
+ int error_number;
+ } go;
+ struct {
+ ErtsSysPortId port_id;
+ int error_number;
+ } sigchld;
+ } u;
+} ErtsSysForkerProto;
+
+#endif /* #ifndef _ERL_UNIX_FORKER_H */
diff --git a/erts/emulator/sys/unix/erl_unix_sys.h b/erts/emulator/sys/unix/erl_unix_sys.h
index 8d4e98bf3a..0352ee1b3c 100644
--- a/erts/emulator/sys/unix/erl_unix_sys.h
+++ b/erts/emulator/sys/unix/erl_unix_sys.h
@@ -30,9 +30,7 @@
#include <limits.h>
#include <stdlib.h>
#include <string.h>
-#ifndef QNX
#include <memory.h>
-#endif
#if defined(__sun__) && defined(__SVR4) && !defined(__EXTENSIONS__)
# define __EXTENSIONS__
@@ -92,11 +90,6 @@
#include <ieeefp.h>
#endif
-#ifdef QNX
-#include <process.h>
-#include <sys/qnx_glob.h>
-#endif
-
#include <pwd.h>
#ifndef HZ
@@ -136,13 +129,6 @@
# define ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT
#endif
-#ifndef ENABLE_CHILD_WAITER_THREAD
-# ifdef ERTS_SMP
-# define ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN
-void erts_check_children(void);
-# endif
-#endif
-
typedef void *GETENV_STATE;
/*
@@ -310,7 +296,6 @@ typedef void (*SIGFUNC)(int);
extern SIGFUNC sys_signal(int, SIGFUNC);
extern void sys_sigrelease(int);
extern void sys_sigblock(int);
-extern void sys_stop_cat(void);
/*
* Handling of floating point exceptions.
@@ -425,19 +410,6 @@ void erts_sys_unblock_fpe(int);
#define ERTS_FP_ERROR_THOROUGH(p, f, A) __ERTS_FP_ERROR_THOROUGH(&(p)->fp_exception, f, A)
-#ifdef NEED_CHILD_SETUP_DEFINES
-/* The child setup argv[] */
-#define CS_ARGV_PROGNAME_IX 0 /* Program name */
-#define CS_ARGV_UNBIND_IX 1 /* Unbind from cpu */
-#define CS_ARGV_WD_IX 2 /* Working directory */
-#define CS_ARGV_CMD_IX 3 /* Command */
-#define CS_ARGV_FD_CR_IX 4 /* Fd close range */
-#define CS_ARGV_DUP2_OP_IX(N) ((N) + 5) /* dup2 operations */
-
-#define CS_ARGV_NO_OF_DUP2_OPS 3 /* Number of dup2 ops */
-#define CS_ARGV_NO_OF_ARGS 8 /* Number of arguments */
-#endif /* #ifdef NEED_CHILD_SETUP_DEFINES */
-
/* Threads */
#ifdef USE_THREADS
extern int init_async(int);
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c
index 8d7da3e47e..2ad5f3b4d5 100644
--- a/erts/emulator/sys/unix/sys.c
+++ b/erts/emulator/sys/unix/sys.c
@@ -49,7 +49,6 @@
#include <sys/ioctl.h>
#endif
-#define NEED_CHILD_SETUP_DEFINES
#define ERTS_WANT_BREAK_HANDLING
#define ERTS_WANT_GOT_SIGUSR1
#define WANT_NONBLOCKING /* must define this to pull in defs from sys.h */
@@ -67,7 +66,7 @@
#include "erl_mseg.h"
extern char **environ;
-static erts_smp_rwmtx_t environ_rwmtx;
+erts_smp_rwmtx_t environ_rwmtx;
#define MAX_VSIZE 16 /* Max number of entries allowed in an I/O
* vector sock_sendv().
@@ -76,89 +75,12 @@ static erts_smp_rwmtx_t environ_rwmtx;
* Don't need global.h, but bif_table.h (included by bif.h),
* won't compile otherwise
*/
-#include "global.h"
+#include "global.h"
#include "bif.h"
-#include "erl_sys_driver.h"
#include "erl_check_io.h"
#include "erl_cpu_topology.h"
-#ifndef DISABLE_VFORK
-#define DISABLE_VFORK 0
-#endif
-
-#if defined IOV_MAX
-#define MAXIOV IOV_MAX
-#elif defined UIO_MAXIOV
-#define MAXIOV UIO_MAXIOV
-#else
-#define MAXIOV 16
-#endif
-
-#ifdef USE_THREADS
-# ifdef ENABLE_CHILD_WAITER_THREAD
-# define CHLDWTHR ENABLE_CHILD_WAITER_THREAD
-# else
-# define CHLDWTHR 0
-# endif
-# define FDBLOCK 1
-#else
-# define CHLDWTHR 0
-# define FDBLOCK 0
-#endif
-/*
- * [OTP-3906]
- * Solaris signal management gets confused when threads are used and a
- * lot of child processes dies. The confusion results in that SIGCHLD
- * signals aren't delivered to the emulator which in turn results in
- * a lot of defunct processes in the system.
- *
- * The problem seems to appear when a signal is frequently
- * blocked/unblocked at the same time as the signal is frequently
- * propagated. The child waiter thread is a workaround for this problem.
- * The SIGCHLD signal is always blocked (in all threads), and the child
- * waiter thread fetches the signal by a call to sigwait(). See
- * child_waiter().
- */
-
-typedef struct ErtsSysReportExit_ ErtsSysReportExit;
-struct ErtsSysReportExit_ {
- ErtsSysReportExit *next;
- Eterm port;
- int pid;
- int ifd;
- int ofd;
-#if CHLDWTHR && !defined(ERTS_SMP)
- int status;
-#endif
-};
-
-/* Used by the fd driver iff the fd could not be set to non-blocking */
-typedef struct ErtsSysBlocking_ {
- ErlDrvPDL pdl;
- int res;
- int err;
- unsigned int pkey;
-} ErtsSysBlocking;
-
-
-/* This data is shared by these drivers - initialized by spawn_init() */
-static struct driver_data {
- ErlDrvPort port_num;
- int ofd, packet_bytes;
- ErtsSysReportExit *report_exit;
- int pid;
- int alive;
- int status;
- int terminating;
- ErtsSysBlocking *blocking;
-} *driver_data; /* indexed by fd */
-
-static ErtsSysReportExit *report_exit_list;
-#if CHLDWTHR && !defined(ERTS_SMP)
-static ErtsSysReportExit *report_exit_transit_list;
-#endif
-
extern int driver_interrupt(int, int);
extern void do_break(void);
@@ -170,33 +92,6 @@ extern void erts_sys_init_float(void);
extern void erl_crash_dump(char* file, int line, char* fmt, ...);
-#define DIR_SEPARATOR_CHAR '/'
-
-#if defined(__ANDROID__)
-#define SHELL "/system/bin/sh"
-#else
-#define SHELL "/bin/sh"
-#endif /* __ANDROID__ */
-
-
-#if defined(DEBUG)
-#define ERL_BUILD_TYPE_MARKER ".debug"
-#elif defined(PURIFY)
-#define ERL_BUILD_TYPE_MARKER ".purify"
-#elif defined(QUANTIFY)
-#define ERL_BUILD_TYPE_MARKER ".quantify"
-#elif defined(PURECOV)
-#define ERL_BUILD_TYPE_MARKER ".purecov"
-#elif defined(VALGRIND)
-#define ERL_BUILD_TYPE_MARKER ".valgrind"
-#else /* opt */
-#define ERL_BUILD_TYPE_MARKER
-#endif
-
-#define CHILD_SETUP_PROG_NAME "child_setup" ERL_BUILD_TYPE_MARKER
-#if !DISABLE_VFORK
-static char *child_setup_prog;
-#endif
#ifdef DEBUG
static int debug_log = 0;
@@ -220,7 +115,7 @@ static volatile int have_prepared_crash_dump;
(have_prepared_crash_dump++)
#endif
-static erts_smp_atomic_t sys_misc_mem_sz;
+erts_smp_atomic_t sys_misc_mem_sz;
#if defined(ERTS_SMP)
static void smp_sig_notify(char c);
@@ -233,46 +128,6 @@ static int sig_suspend_fds[2] = {-1, -1};
jmp_buf erts_sys_sigsegv_jmp;
-#if CHLDWTHR || defined(ERTS_SMP)
-erts_mtx_t chld_stat_mtx;
-#endif
-#if CHLDWTHR
-static erts_tid_t child_waiter_tid;
-/* chld_stat_mtx is used to protect against concurrent accesses
- of the driver_data fields pid, alive, and status. */
-erts_cnd_t chld_stat_cnd;
-static long children_alive;
-#define CHLD_STAT_LOCK erts_mtx_lock(&chld_stat_mtx)
-#define CHLD_STAT_UNLOCK erts_mtx_unlock(&chld_stat_mtx)
-#define CHLD_STAT_WAIT erts_cnd_wait(&chld_stat_cnd, &chld_stat_mtx)
-#define CHLD_STAT_SIGNAL erts_cnd_signal(&chld_stat_cnd)
-#elif defined(ERTS_SMP) /* ------------------------------------------------- */
-#define CHLD_STAT_LOCK erts_mtx_lock(&chld_stat_mtx)
-#define CHLD_STAT_UNLOCK erts_mtx_unlock(&chld_stat_mtx)
-
-#else /* ------------------------------------------------------------------- */
-#define CHLD_STAT_LOCK
-#define CHLD_STAT_UNLOCK
-static volatile int children_died;
-#endif
-
-
-static struct fd_data {
- char pbuf[4]; /* hold partial packet bytes */
- int psz; /* size of pbuf */
- char *buf;
- char *cpos;
- int sz;
- int remain; /* for input on fd */
-} *fd_data; /* indexed by fd */
-
-/* static FUNCTION(int, write_fill, (int, char*, int)); unused? */
-static void note_child_death(int, int);
-
-#if CHLDWTHR
-static void* child_waiter(void *);
-#endif
-
static int crashdump_companion_cube_fd = -1;
/********************* General functions ****************************/
@@ -453,9 +308,10 @@ MALLOC_USE_HASH(1);
#ifdef USE_THREADS
#ifdef ERTS_THR_HAVE_SIG_FUNCS
+
/*
* Child thread inherits parents signal mask at creation. In order to
- * guarantee that the main thread will receive all SIGINT, SIGCHLD, and
+ * guarantee that the main thread will receive all SIGINT, and
* SIGUSR1 signals sent to the process, we block these signals in the
* parent thread when creating a new thread.
*/
@@ -551,14 +407,11 @@ erts_sys_pre_init(void)
#ifdef ERTS_THR_HAVE_SIG_FUNCS
sigemptyset(&thr_create_sigmask);
sigaddset(&thr_create_sigmask, SIGINT); /* block interrupt */
- sigaddset(&thr_create_sigmask, SIGCHLD); /* block child signals */
sigaddset(&thr_create_sigmask, SIGUSR1); /* block user defined signal */
#endif
erts_thr_init(&eid);
- report_exit_list = NULL;
-
#ifdef ERTS_ENABLE_LOCK_COUNT
erts_lcnt_init();
#endif
@@ -569,17 +422,6 @@ erts_sys_pre_init(void)
#ifdef USE_THREADS
-#if CHLDWTHR || defined(ERTS_SMP)
- erts_mtx_init(&chld_stat_mtx, "child_status");
-#endif
-#if CHLDWTHR
-#ifndef ERTS_SMP
- report_exit_transit_list = NULL;
-#endif
- erts_cnd_init(&chld_stat_cnd);
- children_alive = 0;
-#endif
-
#ifdef ERTS_SMP
erts_smp_atomic32_init_nob(&erts_break_requested, 0);
erts_smp_atomic32_init_nob(&erts_got_sigusr1, 0);
@@ -589,9 +431,6 @@ erts_sys_pre_init(void)
erts_got_sigusr1 = 0;
have_prepared_crash_dump = 0;
#endif
-#if !CHLDWTHR && !defined(ERTS_SMP)
- children_died = 0;
-#endif
#endif /* USE_THREADS */
@@ -628,39 +467,6 @@ erts_sys_pre_init(void)
void
erl_sys_init(void)
{
-#if !DISABLE_VFORK
- {
- int res;
- char bindir[MAXPATHLEN];
- size_t bindirsz = sizeof(bindir);
- Uint csp_path_sz;
-
- res = erts_sys_getenv_raw("BINDIR", bindir, &bindirsz);
- if (res != 0) {
- if (res < 0)
- erl_exit(-1,
- "Environment variable BINDIR is not set\n");
- if (res > 0)
- erl_exit(-1,
- "Value of environment variable BINDIR is too large\n");
- }
- if (bindir[0] != DIR_SEPARATOR_CHAR)
- erl_exit(-1,
- "Environment variable BINDIR does not contain an"
- " absolute path\n");
- csp_path_sz = (strlen(bindir)
- + 1 /* DIR_SEPARATOR_CHAR */
- + sizeof(CHILD_SETUP_PROG_NAME)
- + 1);
- child_setup_prog = erts_alloc(ERTS_ALC_T_CS_PROG_PATH, csp_path_sz);
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, csp_path_sz);
- erts_snprintf(child_setup_prog, csp_path_sz,
- "%s%c%s",
- bindir,
- DIR_SEPARATOR_CHAR,
- CHILD_SETUP_PROG_NAME);
- }
-#endif
#ifdef USE_SETLINEBUF
setlinebuf(stdout);
@@ -978,43 +784,6 @@ int sys_max_files(void)
return(max_files);
}
-static void block_signals(void)
-{
-#if !CHLDWTHR
- sys_sigblock(SIGCHLD);
-#endif
-#ifndef ERTS_SMP
- sys_sigblock(SIGINT);
-#ifndef ETHR_UNUSABLE_SIGUSRX
- sys_sigblock(SIGUSR1);
-#endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */
-#endif /* #ifndef ERTS_SMP */
-
-#if defined(ERTS_SMP) && !defined(ETHR_UNUSABLE_SIGUSRX)
- sys_sigblock(ERTS_SYS_SUSPEND_SIGNAL);
-#endif
-
-}
-
-static void unblock_signals(void)
-{
- /* Update erl_child_setup.c if changed */
-#if !CHLDWTHR
- sys_sigrelease(SIGCHLD);
-#endif
-#ifndef ERTS_SMP
- sys_sigrelease(SIGINT);
-#ifndef ETHR_UNUSABLE_SIGUSRX
- sys_sigrelease(SIGUSR1);
-#endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */
-#endif /* #ifndef ERTS_SMP */
-
-#if defined(ERTS_SMP) && !defined(ETHR_UNUSABLE_SIGUSRX)
- sys_sigrelease(ERTS_SYS_SUSPEND_SIGNAL);
-#endif
-
-}
-
/************************** OS info *******************************/
/* Used by erlang:info/1. */
@@ -1102,1502 +871,6 @@ void fini_getenv_state(GETENV_STATE *state)
erts_smp_rwmtx_runlock(&environ_rwmtx);
}
-
-/************************** Port I/O *******************************/
-
-
-
-/* I. Common stuff */
-
-/*
- * Decreasing the size of it below 16384 is not allowed.
- */
-
-/* II. The spawn/fd/vanilla drivers */
-
-#define ERTS_SYS_READ_BUF_SZ (64*1024)
-
-/* Driver interfaces */
-static ErlDrvData spawn_start(ErlDrvPort, char*, SysDriverOpts*);
-static ErlDrvData fd_start(ErlDrvPort, char*, SysDriverOpts*);
-#if FDBLOCK
-static void fd_async(void *);
-static void fd_ready_async(ErlDrvData drv_data, ErlDrvThreadData thread_data);
-#endif
-static ErlDrvSSizeT fd_control(ErlDrvData, unsigned int, char *, ErlDrvSizeT,
- char **, ErlDrvSizeT);
-static ErlDrvData vanilla_start(ErlDrvPort, char*, SysDriverOpts*);
-static int spawn_init(void);
-static void fd_stop(ErlDrvData);
-static void fd_flush(ErlDrvData);
-static void stop(ErlDrvData);
-static void ready_input(ErlDrvData, ErlDrvEvent);
-static void ready_output(ErlDrvData, ErlDrvEvent);
-static void output(ErlDrvData, char*, ErlDrvSizeT);
-static void outputv(ErlDrvData, ErlIOVec*);
-static void stop_select(ErlDrvEvent, void*);
-
-struct erl_drv_entry spawn_driver_entry = {
- spawn_init,
- spawn_start,
- stop,
- output,
- ready_input,
- ready_output,
- "spawn",
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- ERL_DRV_EXTENDED_MARKER,
- ERL_DRV_EXTENDED_MAJOR_VERSION,
- ERL_DRV_EXTENDED_MINOR_VERSION,
- ERL_DRV_FLAG_USE_PORT_LOCKING,
- NULL, NULL,
- stop_select
-};
-struct erl_drv_entry fd_driver_entry = {
- NULL,
- fd_start,
- fd_stop,
- output,
- ready_input,
- ready_output,
- "fd",
- NULL,
- NULL,
- fd_control,
- NULL,
- outputv,
-#if FDBLOCK
- fd_ready_async, /* ready_async */
-#else
- NULL,
-#endif
- fd_flush, /* flush */
- NULL, /* call */
- NULL, /* event */
- ERL_DRV_EXTENDED_MARKER,
- ERL_DRV_EXTENDED_MAJOR_VERSION,
- ERL_DRV_EXTENDED_MINOR_VERSION,
- 0, /* ERL_DRV_FLAGs */
- NULL, /* handle2 */
- NULL, /* process_exit */
- stop_select
-};
-struct erl_drv_entry vanilla_driver_entry = {
- NULL,
- vanilla_start,
- stop,
- output,
- ready_input,
- ready_output,
- "vanilla",
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL, /* flush */
- NULL, /* call */
- NULL, /* event */
- ERL_DRV_EXTENDED_MARKER,
- ERL_DRV_EXTENDED_MAJOR_VERSION,
- ERL_DRV_EXTENDED_MINOR_VERSION,
- 0, /* ERL_DRV_FLAGs */
- NULL, /* handle2 */
- NULL, /* process_exit */
- stop_select
-};
-
-/* Handle SIGCHLD signals. */
-#if (defined(SIG_SIGSET) || defined(SIG_SIGNAL))
-static RETSIGTYPE onchld(void)
-#else
-static RETSIGTYPE onchld(int signum)
-#endif
-{
-#if CHLDWTHR
- ASSERT(0); /* We should *never* catch a SIGCHLD signal */
-#elif defined(ERTS_SMP)
- smp_sig_notify('C');
-#else
- children_died = 1;
- ERTS_CHK_IO_AS_INTR(); /* Make sure we don't sleep in poll */
-#endif
-}
-
-static int set_blocking_data(struct driver_data *dd) {
-
- dd->blocking = erts_alloc(ERTS_ALC_T_SYS_BLOCKING, sizeof(ErtsSysBlocking));
-
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, sizeof(ErtsSysBlocking));
-
- dd->blocking->pdl = driver_pdl_create(dd->port_num);
- dd->blocking->res = 0;
- dd->blocking->err = 0;
- dd->blocking->pkey = driver_async_port_key(dd->port_num);
-
- return 1;
-}
-
-static int set_driver_data(ErlDrvPort port_num,
- int ifd,
- int ofd,
- int packet_bytes,
- int read_write,
- int exit_status,
- int pid,
- int is_blocking)
-{
- Port *prt;
- ErtsSysReportExit *report_exit;
-
- if (!exit_status)
- report_exit = NULL;
- else {
- report_exit = erts_alloc(ERTS_ALC_T_PRT_REP_EXIT,
- sizeof(ErtsSysReportExit));
- report_exit->next = report_exit_list;
- report_exit->port = erts_drvport2id(port_num);
- report_exit->pid = pid;
- report_exit->ifd = read_write & DO_READ ? ifd : -1;
- report_exit->ofd = read_write & DO_WRITE ? ofd : -1;
-#if CHLDWTHR && !defined(ERTS_SMP)
- report_exit->status = 0;
-#endif
- report_exit_list = report_exit;
- }
-
- prt = erts_drvport2port(port_num);
- if (prt != ERTS_INVALID_ERL_DRV_PORT)
- prt->os_pid = pid;
-
- if (read_write & DO_READ) {
- driver_data[ifd].packet_bytes = packet_bytes;
- driver_data[ifd].port_num = port_num;
- driver_data[ifd].report_exit = report_exit;
- driver_data[ifd].pid = pid;
- driver_data[ifd].alive = 1;
- driver_data[ifd].status = 0;
- driver_data[ifd].terminating = 0;
- driver_data[ifd].blocking = NULL;
- if (read_write & DO_WRITE) {
- driver_data[ifd].ofd = ofd;
- if (is_blocking && FDBLOCK)
- if (!set_blocking_data(driver_data+ifd))
- return -1;
- if (ifd != ofd)
- driver_data[ofd] = driver_data[ifd]; /* structure copy */
- } else { /* DO_READ only */
- driver_data[ifd].ofd = -1;
- }
- (void) driver_select(port_num, ifd, (ERL_DRV_READ|ERL_DRV_USE), 1);
- return(ifd);
- } else { /* DO_WRITE only */
- driver_data[ofd].packet_bytes = packet_bytes;
- driver_data[ofd].port_num = port_num;
- driver_data[ofd].report_exit = report_exit;
- driver_data[ofd].ofd = ofd;
- driver_data[ofd].pid = pid;
- driver_data[ofd].alive = 1;
- driver_data[ofd].status = 0;
- driver_data[ofd].terminating = 0;
- driver_data[ofd].blocking = NULL;
- if (is_blocking && FDBLOCK)
- if (!set_blocking_data(driver_data+ofd))
- return -1;
- return(ofd);
- }
-}
-
-static int spawn_init()
-{
- int i;
-#if CHLDWTHR
- erts_thr_opts_t thr_opts = ERTS_THR_OPTS_DEFAULT_INITER;
-
- thr_opts.detached = 0;
- thr_opts.suggested_stack_size = 0; /* Smallest possible */
- thr_opts.name = "child_waiter";
-#endif
-
- sys_signal(SIGPIPE, SIG_IGN); /* Ignore - we'll handle the write failure */
- driver_data = (struct driver_data *)
- erts_alloc(ERTS_ALC_T_DRV_TAB, max_files * sizeof(struct driver_data));
- erts_smp_atomic_add_nob(&sys_misc_mem_sz,
- max_files * sizeof(struct driver_data));
-
- for (i = 0; i < max_files; i++)
- driver_data[i].pid = -1;
-
-#if CHLDWTHR
- sys_sigblock(SIGCHLD);
-#endif
-
- sys_signal(SIGCHLD, onchld); /* Reap children */
-
-#if CHLDWTHR
- erts_thr_create(&child_waiter_tid, child_waiter, NULL, &thr_opts);
-#endif
-
- return 1;
-}
-
-static void close_pipes(int ifd[2], int ofd[2], int read_write)
-{
- if (read_write & DO_READ) {
- (void) close(ifd[0]);
- (void) close(ifd[1]);
- }
- if (read_write & DO_WRITE) {
- (void) close(ofd[0]);
- (void) close(ofd[1]);
- }
-}
-
-static void init_fd_data(int fd, ErlDrvPort port_num)
-{
- fd_data[fd].buf = NULL;
- fd_data[fd].cpos = NULL;
- fd_data[fd].remain = 0;
- fd_data[fd].sz = 0;
- fd_data[fd].psz = 0;
-}
-
-static char **build_unix_environment(char *block)
-{
- int i;
- int j;
- int len;
- char *cp;
- char **cpp;
- char** old_env;
-
- ERTS_SMP_LC_ASSERT(erts_smp_lc_rwmtx_is_rlocked(&environ_rwmtx));
-
- cp = block;
- len = 0;
- while (*cp != '\0') {
- cp += strlen(cp) + 1;
- len++;
- }
- old_env = environ;
- while (*old_env++ != NULL) {
- len++;
- }
-
- cpp = (char **) erts_alloc_fnf(ERTS_ALC_T_ENVIRONMENT,
- sizeof(char *) * (len+1));
- if (cpp == NULL) {
- return NULL;
- }
-
- cp = block;
- len = 0;
- while (*cp != '\0') {
- cpp[len] = cp;
- cp += strlen(cp) + 1;
- len++;
- }
-
- i = len;
- for (old_env = environ; *old_env; old_env++) {
- char* old = *old_env;
-
- for (j = 0; j < len; j++) {
- char *s, *t;
-
- s = cpp[j];
- t = old;
- while (*s == *t && *s != '=') {
- s++, t++;
- }
- if (*s == '=' && *t == '=') {
- break;
- }
- }
-
- if (j == len) { /* New version not found */
- cpp[len++] = old;
- }
- }
-
- for (j = 0; j < i; ) {
- size_t last = strlen(cpp[j])-1;
- if (cpp[j][last] == '=' && strchr(cpp[j], '=') == cpp[j]+last) {
- cpp[j] = cpp[--len];
- if (len < i) {
- i--;
- } else {
- j++;
- }
- }
- else {
- j++;
- }
- }
-
- cpp[len] = NULL;
- return cpp;
-}
-
-/*
- [arndt] In most Unix systems, including Solaris 2.5, 'fork' allocates memory
- in swap space for the child of a 'fork', whereas 'vfork' does not do this.
- The natural call to use here is therefore 'vfork'. Due to a bug in
- 'vfork' in Solaris 2.5 (apparently fixed in 2.6), using 'vfork'
- can be dangerous in what seems to be these circumstances:
- If the child code under a vfork sets the signal action to SIG_DFL
- (or SIG_IGN)
- for any signal which was previously set to a signal handler, the
- state of the parent is clobbered, so that the later arrival of
- such a signal yields a sigsegv in the parent. If the signal was
- not set to a signal handler, but ignored, all seems to work.
- If you change the forking code below, beware of this.
- */
-
-static ErlDrvData spawn_start(ErlDrvPort port_num, char* name, SysDriverOpts* opts)
-{
-#define CMD_LINE_PREFIX_STR "exec "
-#define CMD_LINE_PREFIX_STR_SZ (sizeof(CMD_LINE_PREFIX_STR) - 1)
-
- int ifd[2], ofd[2], len, pid, i;
- char **volatile new_environ; /* volatile since a vfork() then cannot
- cause 'new_environ' to be clobbered
- in the parent process. */
- int saved_errno;
- long res;
- char *cmd_line;
-#ifndef QNX
- int unbind;
-#endif
-#if !DISABLE_VFORK
- int no_vfork;
- size_t no_vfork_sz = sizeof(no_vfork);
-
- no_vfork = (erts_sys_getenv_raw("ERL_NO_VFORK",
- (char *) &no_vfork,
- &no_vfork_sz) >= 0);
-#endif
-
- switch (opts->read_write) {
- case DO_READ:
- if (pipe(ifd) < 0)
- return ERL_DRV_ERROR_ERRNO;
- if (ifd[0] >= max_files) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = EMFILE;
- return ERL_DRV_ERROR_ERRNO;
- }
- ofd[1] = -1; /* keep purify happy */
- break;
- case DO_WRITE:
- if (pipe(ofd) < 0) return ERL_DRV_ERROR_ERRNO;
- if (ofd[1] >= max_files) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = EMFILE;
- return ERL_DRV_ERROR_ERRNO;
- }
- ifd[0] = -1; /* keep purify happy */
- break;
- case DO_READ|DO_WRITE:
- if (pipe(ifd) < 0) return ERL_DRV_ERROR_ERRNO;
- errno = EMFILE; /* default for next two conditions */
- if (ifd[0] >= max_files || pipe(ofd) < 0) {
- close_pipes(ifd, ofd, DO_READ);
- return ERL_DRV_ERROR_ERRNO;
- }
- if (ofd[1] >= max_files) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = EMFILE;
- return ERL_DRV_ERROR_ERRNO;
- }
- break;
- default:
- ASSERT(0);
- return ERL_DRV_ERROR_GENERAL;
- }
-
- if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
- /* started with spawn_executable, not with spawn */
- len = strlen(name);
- cmd_line = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP, len + 1);
- if (!cmd_line) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = ENOMEM;
- return ERL_DRV_ERROR_ERRNO;
- }
- memcpy((void *) cmd_line,(void *) name, len);
- cmd_line[len] = '\0';
- if (access(cmd_line,X_OK) != 0) {
- int save_errno = errno;
- erts_free(ERTS_ALC_T_TMP, cmd_line);
- errno = save_errno;
- return ERL_DRV_ERROR_ERRNO;
- }
- } else {
- /* make the string suitable for giving to "sh" */
- len = strlen(name);
- cmd_line = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP,
- CMD_LINE_PREFIX_STR_SZ + len + 1);
- if (!cmd_line) {
- close_pipes(ifd, ofd, opts->read_write);
- errno = ENOMEM;
- return ERL_DRV_ERROR_ERRNO;
- }
- memcpy((void *) cmd_line,
- (void *) CMD_LINE_PREFIX_STR,
- CMD_LINE_PREFIX_STR_SZ);
- memcpy((void *) (cmd_line + CMD_LINE_PREFIX_STR_SZ), (void *) name, len);
- cmd_line[CMD_LINE_PREFIX_STR_SZ + len] = '\0';
- }
-
- erts_smp_rwmtx_rlock(&environ_rwmtx);
-
- if (opts->envir == NULL) {
- new_environ = environ;
- } else if ((new_environ = build_unix_environment(opts->envir)) == NULL) {
- erts_smp_rwmtx_runlock(&environ_rwmtx);
- erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
- errno = ENOMEM;
- return ERL_DRV_ERROR_ERRNO;
- }
-
-#ifndef QNX
- /* Block child from SIGINT and SIGUSR1. Must be before fork()
- to be safe. */
- block_signals();
-
- CHLD_STAT_LOCK;
-
- unbind = erts_sched_bind_atfork_prepare();
-
-#if !DISABLE_VFORK
- /* See fork/vfork discussion before this function. */
- if (no_vfork) {
-#endif
-
- DEBUGF(("Using fork\n"));
- pid = fork();
-
- if (pid == 0) {
- /* The child! Setup child... */
-
- if (erts_sched_bind_atfork_child(unbind) != 0)
- goto child_error;
-
- /* OBSERVE!
- * Keep child setup after vfork() (implemented below and in
- * erl_child_setup.c) up to date if changes are made here.
- */
-
- if (opts->use_stdio) {
- if (opts->read_write & DO_READ) {
- /* stdout for process */
- if (dup2(ifd[1], 1) < 0)
- goto child_error;
- if(opts->redir_stderr)
- /* stderr for process */
- if (dup2(ifd[1], 2) < 0)
- goto child_error;
- }
- if (opts->read_write & DO_WRITE)
- /* stdin for process */
- if (dup2(ofd[0], 0) < 0)
- goto child_error;
- }
- else { /* XXX will fail if ofd[0] == 4 (unlikely..) */
- if (opts->read_write & DO_READ)
- if (dup2(ifd[1], 4) < 0)
- goto child_error;
- if (opts->read_write & DO_WRITE)
- if (dup2(ofd[0], 3) < 0)
- goto child_error;
- }
-
-#if defined(HAVE_CLOSEFROM)
- closefrom(opts->use_stdio ? 3 : 5);
-#else
- for (i = opts->use_stdio ? 3 : 5; i < max_files; i++)
- (void) close(i);
-#endif
-
- if (opts->wd && chdir(opts->wd) < 0)
- goto child_error;
-
-#if defined(USE_SETPGRP_NOARGS) /* SysV */
- (void) setpgrp();
-#elif defined(USE_SETPGRP) /* BSD */
- (void) setpgrp(0, getpid());
-#else /* POSIX */
- (void) setsid();
-#endif
-
- unblock_signals();
-
- if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
- if (opts->argv == NULL) {
- execle(cmd_line,cmd_line,(char *) NULL, new_environ);
- } else {
- if (opts->argv[0] == erts_default_arg0) {
- opts->argv[0] = cmd_line;
- }
- execve(cmd_line, opts->argv, new_environ);
- if (opts->argv[0] == cmd_line) {
- opts->argv[0] = erts_default_arg0;
- }
- }
- } else {
- execle(SHELL, "sh", "-c", cmd_line, (char *) NULL, new_environ);
- }
- child_error:
- _exit(1);
- }
-#if !DISABLE_VFORK
- }
-#define ENOUGH_BYTES (44)
- else { /* Use vfork() */
- char **cs_argv= erts_alloc(ERTS_ALC_T_TMP,(CS_ARGV_NO_OF_ARGS + 1)*
- sizeof(char *));
- char fd_close_range[ENOUGH_BYTES]; /* 44 bytes are enough to */
- char dup2_op[CS_ARGV_NO_OF_DUP2_OPS][ENOUGH_BYTES]; /* hold any "%d:%d" string */
- /* on a 64-bit machine. */
-
- /* Setup argv[] for the child setup program (implemented in
- erl_child_setup.c) */
- i = 0;
- if (opts->use_stdio) {
- if (opts->read_write & DO_READ){
- /* stdout for process */
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ifd[1], 1);
- if(opts->redir_stderr)
- /* stderr for process */
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ifd[1], 2);
- }
- if (opts->read_write & DO_WRITE)
- /* stdin for process */
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ofd[0], 0);
- } else { /* XXX will fail if ofd[0] == 4 (unlikely..) */
- if (opts->read_write & DO_READ)
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ifd[1], 4);
- if (opts->read_write & DO_WRITE)
- erts_snprintf(&dup2_op[i++][0], ENOUGH_BYTES, "%d:%d", ofd[0], 3);
- }
- for (; i < CS_ARGV_NO_OF_DUP2_OPS; i++)
- strcpy(&dup2_op[i][0], "-");
- erts_snprintf(fd_close_range, ENOUGH_BYTES, "%d:%d", opts->use_stdio ? 3 : 5, max_files-1);
-
- cs_argv[CS_ARGV_PROGNAME_IX] = child_setup_prog;
- cs_argv[CS_ARGV_WD_IX] = opts->wd ? opts->wd : ".";
- cs_argv[CS_ARGV_UNBIND_IX] = erts_sched_bind_atvfork_child(unbind);
- cs_argv[CS_ARGV_FD_CR_IX] = fd_close_range;
- for (i = 0; i < CS_ARGV_NO_OF_DUP2_OPS; i++)
- cs_argv[CS_ARGV_DUP2_OP_IX(i)] = &dup2_op[i][0];
-
- if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
- int num = 0;
- int j = 0;
- if (opts->argv != NULL) {
- for(; opts->argv[num] != NULL; ++num)
- ;
- }
- cs_argv = erts_realloc(ERTS_ALC_T_TMP,cs_argv, (CS_ARGV_NO_OF_ARGS + 1 + num + 1) * sizeof(char *));
- cs_argv[CS_ARGV_CMD_IX] = "-";
- cs_argv[CS_ARGV_NO_OF_ARGS] = cmd_line;
- if (opts->argv != NULL) {
- for (;opts->argv[j] != NULL; ++j) {
- if (opts->argv[j] == erts_default_arg0) {
- cs_argv[CS_ARGV_NO_OF_ARGS + 1 + j] = cmd_line;
- } else {
- cs_argv[CS_ARGV_NO_OF_ARGS + 1 + j] = opts->argv[j];
- }
- }
- }
- cs_argv[CS_ARGV_NO_OF_ARGS + 1 + j] = NULL;
- } else {
- cs_argv[CS_ARGV_CMD_IX] = cmd_line; /* Command */
- cs_argv[CS_ARGV_NO_OF_ARGS] = NULL;
- }
- DEBUGF(("Using vfork\n"));
- pid = vfork();
-
- if (pid == 0) {
- /* The child! */
-
- /* Observe!
- * OTP-4389: The child setup program (implemented in
- * erl_child_setup.c) will perform the necessary setup of the
- * child before it execs to the user program. This because
- * vfork() only allow an *immediate* execve() or _exit() in the
- * child.
- */
- execve(child_setup_prog, cs_argv, new_environ);
- _exit(1);
- }
- erts_free(ERTS_ALC_T_TMP,cs_argv);
- }
-#undef ENOUGH_BYTES
-#endif
-
- erts_sched_bind_atfork_parent(unbind);
-
- if (pid == -1) {
- saved_errno = errno;
- CHLD_STAT_UNLOCK;
- erts_smp_rwmtx_runlock(&environ_rwmtx);
- erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
- unblock_signals();
- close_pipes(ifd, ofd, opts->read_write);
- errno = saved_errno;
- return ERL_DRV_ERROR_ERRNO;
- }
-#else /* QNX */
- if (opts->use_stdio) {
- if (opts->read_write & DO_READ)
- qnx_spawn_options.iov[1] = ifd[1]; /* stdout for process */
- if (opts->read_write & DO_WRITE)
- qnx_spawn_options.iov[0] = ofd[0]; /* stdin for process */
- }
- else {
- if (opts->read_write & DO_READ)
- qnx_spawn_options.iov[4] = ifd[1];
- if (opts->read_write & DO_WRITE)
- qnx_spawn_options.iov[3] = ofd[0];
- }
- /* Close fds on exec */
- for (i = 3; i < max_files; i++)
- fcntl(i, F_SETFD, 1);
-
- qnx_spawn_options.flags = _SPAWN_SETSID;
- if ((pid = spawnl(P_NOWAIT, SHELL, SHELL, "-c", cmd_line,
- (char *) 0)) < 0) {
- erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
- reset_qnx_spawn();
- erts_smp_rwmtx_runlock(&environ_rwmtx);
- close_pipes(ifd, ofd, opts->read_write);
- return ERL_DRV_ERROR_GENERAL;
- }
- reset_qnx_spawn();
-#endif /* QNX */
-
- erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
-
- if (new_environ != environ)
- erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
-
- if (opts->read_write & DO_READ)
- (void) close(ifd[1]);
- if (opts->read_write & DO_WRITE)
- (void) close(ofd[0]);
-
- if (opts->read_write & DO_READ) {
- SET_NONBLOCKING(ifd[0]);
- init_fd_data(ifd[0], port_num);
- }
- if (opts->read_write & DO_WRITE) {
- SET_NONBLOCKING(ofd[1]);
- init_fd_data(ofd[1], port_num);
- }
-
- res = set_driver_data(port_num, ifd[0], ofd[1], opts->packet_bytes,
- opts->read_write, opts->exit_status, pid, 0);
- /* Don't unblock SIGCHLD until now, since the call above must
- first complete putting away the info about our new subprocess. */
- unblock_signals();
-
-#if CHLDWTHR
- ASSERT(children_alive >= 0);
-
- if (!(children_alive++))
- CHLD_STAT_SIGNAL; /* Wake up child waiter thread if no children
- was alive before we fork()ed ... */
-#endif
- /* Don't unlock chld_stat_mtx until now of the same reason as above */
- CHLD_STAT_UNLOCK;
-
- erts_smp_rwmtx_runlock(&environ_rwmtx);
-
- return (ErlDrvData)res;
-#undef CMD_LINE_PREFIX_STR
-#undef CMD_LINE_PREFIX_STR_SZ
-}
-
-#ifdef QNX
-static reset_qnx_spawn()
-{
- int i;
-
- /* Reset qnx_spawn_options */
- qnx_spawn_options.flags = 0;
- qnx_spawn_options.iov[0] = 0xff;
- qnx_spawn_options.iov[1] = 0xff;
- qnx_spawn_options.iov[2] = 0xff;
- qnx_spawn_options.iov[3] = 0xff;
-}
-#endif
-
-#define FD_DEF_HEIGHT 24
-#define FD_DEF_WIDTH 80
-/* Control op */
-#define FD_CTRL_OP_GET_WINSIZE 100
-
-static int fd_get_window_size(int fd, Uint32 *width, Uint32 *height)
-{
-#ifdef TIOCGWINSZ
- struct winsize ws;
- if (ioctl(fd,TIOCGWINSZ,&ws) == 0) {
- *width = (Uint32) ws.ws_col;
- *height = (Uint32) ws.ws_row;
- return 0;
- }
-#endif
- return -1;
-}
-
-static ErlDrvSSizeT fd_control(ErlDrvData drv_data,
- unsigned int command,
- char *buf, ErlDrvSizeT len,
- char **rbuf, ErlDrvSizeT rlen)
-{
- int fd = (int)(long)drv_data;
- char resbuff[2*sizeof(Uint32)];
- switch (command) {
- case FD_CTRL_OP_GET_WINSIZE:
- {
- Uint32 w,h;
- if (fd_get_window_size(fd,&w,&h))
- return 0;
- memcpy(resbuff,&w,sizeof(Uint32));
- memcpy(resbuff+sizeof(Uint32),&h,sizeof(Uint32));
- }
- break;
- default:
- return 0;
- }
- if (rlen < 2*sizeof(Uint32)) {
- *rbuf = driver_alloc(2*sizeof(Uint32));
- }
- memcpy(*rbuf,resbuff,2*sizeof(Uint32));
- return 2*sizeof(Uint32);
-}
-
-static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
- SysDriverOpts* opts)
-{
- ErlDrvData res;
- int non_blocking = 0;
-
- if (((opts->read_write & DO_READ) && opts->ifd >= max_files) ||
- ((opts->read_write & DO_WRITE) && opts->ofd >= max_files))
- return ERL_DRV_ERROR_GENERAL;
-
- /*
- * Historical:
- *
- * "Note about nonblocking I/O.
- *
- * At least on Solaris, setting the write end of a TTY to nonblocking,
- * will set the input end to nonblocking as well (and vice-versa).
- * If erl is run in a pipeline like this: cat | erl
- * the input end of the TTY will be the standard input of cat.
- * And cat is not prepared to handle nonblocking I/O."
- *
- * Actually, the reason for this is not that the tty itself gets set
- * in non-blocking mode, but that the "input end" (cat's stdin) and
- * the "output end" (erlang's stdout) are typically the "same" file
- * descriptor, dup()'ed from a single fd by one of this process'
- * ancestors.
- *
- * The workaround for this problem used to be a rather bad kludge,
- * interposing an extra process ("internal cat") between erlang's
- * stdout and the original stdout, allowing erlang to set its stdout
- * in non-blocking mode without affecting the stdin of the preceding
- * process in the pipeline - and being a kludge, it caused all kinds
- * of weird problems.
- *
- * So, this is the current logic:
- *
- * The only reason to set non-blocking mode on the output fd at all is
- * if it's something that can cause a write() to block, of course,
- * i.e. primarily if it points to a tty, socket, pipe, or fifo.
- *
- * If we don't set non-blocking mode when we "should" have, and output
- * becomes blocked, the entire runtime system will be suspended - this
- * is normally bad of course, and can happen fairly "easily" - e.g. user
- * hits ^S on tty - but doesn't necessarily happen.
- *
- * If we do set non-blocking mode when we "shouldn't" have, the runtime
- * system will end up seeing EOF on the input fd (due to the preceding
- * process dying), which typically will cause the entire runtime system
- * to terminate immediately (due to whatever erlang process is seeing
- * the EOF taking it as a signal to halt the system). This is *very* bad.
- *
- * I.e. we should take a conservative approach, and only set non-
- * blocking mode when we a) need to, and b) are reasonably certain
- * that it won't be a problem. And as in the example above, the problem
- * occurs when input fd and output fd point to different "things".
- *
- * However, determining that they are not just the same "type" of
- * "thing", but actually the same instance of that type of thing, is
- * unreasonably complex in many/most cases.
- *
- * Also, with pipes, sockets, and fifos it's far from obvious that the
- * user *wants* non-blocking output: If you're running erlang inside
- * some complex pipeline, you're probably not running a real-time system
- * that must never stop, but rather *want* it to suspend if the output
- * channel is "full".
- *
- * So, the bottom line: We will only set the output fd non-blocking if
- * it points to a tty, and either a) the input fd also points to a tty,
- * or b) we can make sure that setting the output fd non-blocking
- * doesn't interfere with someone else's input, via a somewhat milder
- * kludge than the above.
- *
- * Also keep in mind that while this code is almost exclusively run as
- * a result of an erlang open_port({fd,0,1}, ...), that isn't the only
- * case - it can be called with any old pre-existing file descriptors,
- * the relations between which (if they're even two) we can only guess
- * at - still, we try our best...
- *
- * Added note OTP 18: Some systems seem to use stdout/stderr to log data
- * using unix pipes, so we cannot allow the system to block on a write.
- * Therefore we use an async thread to write the data to fd's that could
- * not be set to non-blocking. When no async threads are available we
- * fall back on the old behaviour.
- *
- * Also the guarantee about what is delivered to the OS has changed.
- * Pre 18 the fd driver did no flushing of data before terminating.
- * Now it does. This is because we want to be able to guarantee that things
- * such as escripts and friends really have outputted all data before
- * terminating. This could potentially block the termination of the system
- * for a very long time, but if the user wants to terminate fast she should
- * use erlang:halt with flush=false.
- */
-
- if (opts->read_write & DO_READ) {
- init_fd_data(opts->ifd, port_num);
- }
- if (opts->read_write & DO_WRITE) {
- init_fd_data(opts->ofd, port_num);
-
- /* If we don't have a read end, all bets are off - no non-blocking. */
- if (opts->read_write & DO_READ) {
-
- if (isatty(opts->ofd)) { /* output fd is a tty:-) */
-
- if (isatty(opts->ifd)) { /* input fd is also a tty */
-
- /* To really do this "right", we should also check that
- input and output fd point to the *same* tty - but
- this seems like overkill; ttyname() isn't for free,
- and this is a very common case - and it's hard to
- imagine a scenario where setting non-blocking mode
- here would cause problems - go ahead and do it. */
-
- non_blocking = 1;
- SET_NONBLOCKING(opts->ofd);
-
- } else { /* output fd is a tty, input fd isn't */
-
- /* This is a "problem case", but also common (see the
- example above) - i.e. it makes sense to try a bit
- harder before giving up on non-blocking mode: Try to
- re-open the tty that the output fd points to, and if
- successful replace the original one with the "new" fd
- obtained this way, and set *that* one in non-blocking
- mode. (Yes, this is a kludge.)
-
- However, re-opening the tty may fail in a couple of
- (unusual) cases:
-
- 1) The name of the tty (or an equivalent one, i.e.
- same major/minor number) can't be found, because
- it actually lives somewhere other than /dev (or
- wherever ttyname() looks for it), and isn't
- equivalent to any of those that do live in the
- "standard" place - this should be *very* unusual.
-
- 2) Permissions on the tty don't allow us to open it -
- it's perfectly possible to have an fd open to an
- object whose permissions wouldn't allow us to open
- it. This is not as unusual as it sounds, one case
- is if the user has su'ed to someone else (not
- root) - we have a read/write fd open to the tty
- (because it has been inherited all the way down
- here), but we have neither read nor write
- permission for the tty.
-
- In these cases, we finally give up, and don't set the
- output fd in non-blocking mode. */
-
- char *tty;
- int nfd;
-
- if ((tty = ttyname(opts->ofd)) != NULL &&
- (nfd = open(tty, O_WRONLY)) != -1) {
- dup2(nfd, opts->ofd);
- close(nfd);
- non_blocking = 1;
- SET_NONBLOCKING(opts->ofd);
- }
- }
- }
- }
- }
- CHLD_STAT_LOCK;
- res = (ErlDrvData)(long)set_driver_data(port_num, opts->ifd, opts->ofd,
- opts->packet_bytes,
- opts->read_write, 0, -1,
- !non_blocking);
- CHLD_STAT_UNLOCK;
- return res;
-}
-
-static void clear_fd_data(int fd)
-{
- if (fd_data[fd].sz > 0) {
- erts_free(ERTS_ALC_T_FD_ENTRY_BUF, (void *) fd_data[fd].buf);
- ASSERT(erts_smp_atomic_read_nob(&sys_misc_mem_sz) >= fd_data[fd].sz);
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, -1*fd_data[fd].sz);
- }
- fd_data[fd].buf = NULL;
- fd_data[fd].sz = 0;
- fd_data[fd].remain = 0;
- fd_data[fd].cpos = NULL;
- fd_data[fd].psz = 0;
-}
-
-static void nbio_stop_fd(ErlDrvPort prt, int fd)
-{
- driver_select(prt,fd,DO_READ|DO_WRITE,0);
- clear_fd_data(fd);
- SET_BLOCKING(fd);
-}
-
-static void fd_stop(ErlDrvData ev) /* Does not close the fds */
-{
- int ofd;
- int fd = (int)(long)ev;
- ErlDrvPort prt = driver_data[fd].port_num;
-
-#if FDBLOCK
- if (driver_data[fd].blocking) {
- erts_free(ERTS_ALC_T_SYS_BLOCKING,driver_data[fd].blocking);
- driver_data[fd].blocking = NULL;
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, -1*sizeof(ErtsSysBlocking));
- }
-#endif
-
- nbio_stop_fd(prt, fd);
- ofd = driver_data[fd].ofd;
- if (ofd != fd && ofd != -1)
- nbio_stop_fd(prt, ofd);
-}
-
-static void fd_flush(ErlDrvData fd)
-{
- if (!driver_data[(int)(long)fd].terminating)
- driver_data[(int)(long)fd].terminating = 1;
-}
-
-static ErlDrvData vanilla_start(ErlDrvPort port_num, char* name,
- SysDriverOpts* opts)
-{
- int flags, fd;
- ErlDrvData res;
-
- flags = (opts->read_write == DO_READ ? O_RDONLY :
- opts->read_write == DO_WRITE ? O_WRONLY|O_CREAT|O_TRUNC :
- O_RDWR|O_CREAT);
- if ((fd = open(name, flags, 0666)) < 0)
- return ERL_DRV_ERROR_GENERAL;
- if (fd >= max_files) {
- close(fd);
- return ERL_DRV_ERROR_GENERAL;
- }
- SET_NONBLOCKING(fd);
- init_fd_data(fd, port_num);
-
- CHLD_STAT_LOCK;
- res = (ErlDrvData)(long)set_driver_data(port_num, fd, fd,
- opts->packet_bytes,
- opts->read_write, 0, -1, 0);
- CHLD_STAT_UNLOCK;
- return res;
-}
-
-/* Note that driver_data[fd].ifd == fd if the port was opened for reading, */
-/* otherwise (i.e. write only) driver_data[fd].ofd = fd. */
-
-static void stop(ErlDrvData fd)
-{
- ErlDrvPort prt;
- int ofd;
-
- prt = driver_data[(int)(long)fd].port_num;
- nbio_stop_fd(prt, (int)(long)fd);
-
- ofd = driver_data[(int)(long)fd].ofd;
- if (ofd != (int)(long)fd && (int)(long)ofd != -1)
- nbio_stop_fd(prt, ofd);
- else
- ofd = -1;
-
- CHLD_STAT_LOCK;
-
- /* Mark as unused. */
- driver_data[(int)(long)fd].pid = -1;
-
- CHLD_STAT_UNLOCK;
-
- /* SMP note: Close has to be last thing done (open file descriptors work
- as locks on driver_data[] entries) */
- driver_select(prt, (int)(long)fd, ERL_DRV_USE, 0); /* close(fd); */
- if (ofd >= 0) {
- driver_select(prt, (int)(long)ofd, ERL_DRV_USE, 0); /* close(ofd); */
- }
-}
-
-/* used by fd_driver */
-static void outputv(ErlDrvData e, ErlIOVec* ev)
-{
- int fd = (int)(long)e;
- ErlDrvPort ix = driver_data[fd].port_num;
- int pb = driver_data[fd].packet_bytes;
- int ofd = driver_data[fd].ofd;
- ssize_t n;
- ErlDrvSizeT sz;
- char lb[4];
- char* lbp;
- ErlDrvSizeT len = ev->size;
-
- /* (len > ((unsigned long)-1 >> (4-pb)*8)) */
- /* if (pb >= 0 && (len & (((ErlDrvSizeT)1 << (pb*8))) - 1) != len) {*/
- if (((pb == 2) && (len > 0xffff)) || (pb == 1 && len > 0xff)) {
- driver_failure_posix(ix, EINVAL);
- return; /* -1; */
- }
- /* Handles 0 <= pb <= 4 only */
- put_int32((Uint32) len, lb);
- lbp = lb + (4-pb);
-
- ev->iov[0].iov_base = lbp;
- ev->iov[0].iov_len = pb;
- ev->size += pb;
-
- if (driver_data[fd].blocking && FDBLOCK)
- driver_pdl_lock(driver_data[fd].blocking->pdl);
-
- if ((sz = driver_sizeq(ix)) > 0) {
- driver_enqv(ix, ev, 0);
-
- if (driver_data[fd].blocking && FDBLOCK)
- driver_pdl_unlock(driver_data[fd].blocking->pdl);
-
- if (sz + ev->size >= (1 << 13))
- set_busy_port(ix, 1);
- }
- else if (!driver_data[fd].blocking || !FDBLOCK) {
- /* We try to write directly if the fd in non-blocking */
- int vsize = ev->vsize > MAX_VSIZE ? MAX_VSIZE : ev->vsize;
-
- n = writev(ofd, (const void *) (ev->iov), vsize);
- if (n == ev->size)
- return; /* 0;*/
- if (n < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
- driver_failure_posix(ix, errno);
- return; /* -1;*/
- }
- n = 0;
- }
- driver_enqv(ix, ev, n); /* n is the skip value */
- driver_select(ix, ofd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
- }
-#if FDBLOCK
- else {
- if (ev->size != 0) {
- driver_enqv(ix, ev, 0);
- driver_pdl_unlock(driver_data[fd].blocking->pdl);
- driver_async(ix, &driver_data[fd].blocking->pkey,
- fd_async, driver_data+fd, NULL);
- } else {
- driver_pdl_unlock(driver_data[fd].blocking->pdl);
- }
- }
-#endif
- /* return 0;*/
-}
-
-/* Used by spawn_driver and vanilla driver */
-static void output(ErlDrvData e, char* buf, ErlDrvSizeT len)
-{
- int fd = (int)(long)e;
- ErlDrvPort ix = driver_data[fd].port_num;
- int pb = driver_data[fd].packet_bytes;
- int ofd = driver_data[fd].ofd;
- ssize_t n;
- ErlDrvSizeT sz;
- char lb[4];
- char* lbp;
- struct iovec iv[2];
-
- /* (len > ((unsigned long)-1 >> (4-pb)*8)) */
- if (((pb == 2) && (len > 0xffff)) || (pb == 1 && len > 0xff)) {
- driver_failure_posix(ix, EINVAL);
- return; /* -1; */
- }
- put_int32(len, lb);
- lbp = lb + (4-pb);
-
- if ((sz = driver_sizeq(ix)) > 0) {
- driver_enq(ix, lbp, pb);
- driver_enq(ix, buf, len);
- if (sz + len + pb >= (1 << 13))
- set_busy_port(ix, 1);
- }
- else {
- iv[0].iov_base = lbp;
- iv[0].iov_len = pb; /* should work for pb=0 */
- iv[1].iov_base = buf;
- iv[1].iov_len = len;
- n = writev(ofd, iv, 2);
- if (n == pb+len)
- return; /* 0; */
- if (n < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
- driver_failure_posix(ix, errno);
- return; /* -1; */
- }
- n = 0;
- }
- if (n < pb) {
- driver_enq(ix, lbp+n, pb-n);
- driver_enq(ix, buf, len);
- }
- else {
- n -= pb;
- driver_enq(ix, buf+n, len-n);
- }
- driver_select(ix, ofd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
- }
- return; /* 0; */
-}
-
-static int port_inp_failure(ErlDrvPort port_num, int ready_fd, int res)
- /* Result: 0 (eof) or -1 (error) */
-{
- int err = errno;
-
- ASSERT(res <= 0);
- (void) driver_select(port_num, ready_fd, ERL_DRV_READ|ERL_DRV_WRITE, 0);
- clear_fd_data(ready_fd);
-
- if (driver_data[ready_fd].blocking && FDBLOCK) {
- driver_pdl_lock(driver_data[ready_fd].blocking->pdl);
- if (driver_sizeq(driver_data[ready_fd].port_num) > 0) {
- driver_pdl_unlock(driver_data[ready_fd].blocking->pdl);
- /* We have stuff in the output queue, so we just
- set the state to terminating and wait for fd_async_ready
- to terminate the port */
- if (res == 0)
- driver_data[ready_fd].terminating = 2;
- else
- driver_data[ready_fd].terminating = -err;
- return 0;
- }
- driver_pdl_unlock(driver_data[ready_fd].blocking->pdl);
- }
-
- if (res == 0) {
- if (driver_data[ready_fd].report_exit) {
- CHLD_STAT_LOCK;
-
- if (driver_data[ready_fd].alive) {
- /*
- * We have eof and want to report exit status, but the process
- * hasn't exited yet. When it does report_exit_status() will
- * driver_select() this fd which will make sure that we get
- * back here with driver_data[ready_fd].alive == 0 and
- * driver_data[ready_fd].status set.
- */
- CHLD_STAT_UNLOCK;
- return 0;
- }
- else {
- int status = driver_data[ready_fd].status;
- CHLD_STAT_UNLOCK;
-
- /* We need not be prepared for stopped/continued processes. */
- if (WIFSIGNALED(status))
- status = 128 + WTERMSIG(status);
- else
- status = WEXITSTATUS(status);
-
- driver_report_exit(driver_data[ready_fd].port_num, status);
- }
- }
- driver_failure_eof(port_num);
- } else {
- driver_failure_posix(port_num, err);
- }
- return 0;
-}
-
-/* fd is the drv_data that is returned from the */
-/* initial start routine */
-/* ready_fd is the descriptor that is ready to read */
-
-static void ready_input(ErlDrvData e, ErlDrvEvent ready_fd)
-{
- int fd = (int)(long)e;
- ErlDrvPort port_num;
- int packet_bytes;
- int res;
- Uint h;
-
- port_num = driver_data[fd].port_num;
- packet_bytes = driver_data[fd].packet_bytes;
-
-
- if (packet_bytes == 0) {
- byte *read_buf = (byte *) erts_alloc(ERTS_ALC_T_SYS_READ_BUF,
- ERTS_SYS_READ_BUF_SZ);
- res = read(ready_fd, read_buf, ERTS_SYS_READ_BUF_SZ);
- if (res < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK))
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res == 0)
- port_inp_failure(port_num, ready_fd, res);
- else
- driver_output(port_num, (char*) read_buf, res);
- erts_free(ERTS_ALC_T_SYS_READ_BUF, (void *) read_buf);
- }
- else if (fd_data[ready_fd].remain > 0) { /* We try to read the remainder */
- /* space is allocated in buf */
- res = read(ready_fd, fd_data[ready_fd].cpos,
- fd_data[ready_fd].remain);
- if (res < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK))
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res == 0) {
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res == fd_data[ready_fd].remain) { /* we're done */
- driver_output(port_num, fd_data[ready_fd].buf,
- fd_data[ready_fd].sz);
- clear_fd_data(ready_fd);
- }
- else { /* if (res < fd_data[ready_fd].remain) */
- fd_data[ready_fd].cpos += res;
- fd_data[ready_fd].remain -= res;
- }
- }
- else if (fd_data[ready_fd].remain == 0) { /* clean fd */
- byte *read_buf = (byte *) erts_alloc(ERTS_ALC_T_SYS_READ_BUF,
- ERTS_SYS_READ_BUF_SZ);
- /* We make one read attempt and see what happens */
- res = read(ready_fd, read_buf, ERTS_SYS_READ_BUF_SZ);
- if (res < 0) {
- if ((errno != EINTR) && (errno != ERRNO_BLOCK))
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res == 0) { /* eof */
- port_inp_failure(port_num, ready_fd, res);
- }
- else if (res < packet_bytes - fd_data[ready_fd].psz) {
- memcpy(fd_data[ready_fd].pbuf+fd_data[ready_fd].psz,
- read_buf, res);
- fd_data[ready_fd].psz += res;
- }
- else { /* if (res >= packet_bytes) */
- unsigned char* cpos = read_buf;
- int bytes_left = res;
-
- while (1) {
- int psz = fd_data[ready_fd].psz;
- char* pbp = fd_data[ready_fd].pbuf + psz;
-
- while(bytes_left && (psz < packet_bytes)) {
- *pbp++ = *cpos++;
- bytes_left--;
- psz++;
- }
-
- if (psz < packet_bytes) {
- fd_data[ready_fd].psz = psz;
- break;
- }
- fd_data[ready_fd].psz = 0;
-
- switch (packet_bytes) {
- case 1: h = get_int8(fd_data[ready_fd].pbuf); break;
- case 2: h = get_int16(fd_data[ready_fd].pbuf); break;
- case 4: h = get_int32(fd_data[ready_fd].pbuf); break;
- default: ASSERT(0); return; /* -1; */
- }
-
- if (h <= (bytes_left)) {
- driver_output(port_num, (char*) cpos, h);
- cpos += h;
- bytes_left -= h;
- continue;
- }
- else { /* The last message we got was split */
- char *buf = erts_alloc_fnf(ERTS_ALC_T_FD_ENTRY_BUF, h);
- if (!buf) {
- errno = ENOMEM;
- port_inp_failure(port_num, ready_fd, -1);
- }
- else {
- erts_smp_atomic_add_nob(&sys_misc_mem_sz, h);
- sys_memcpy(buf, cpos, bytes_left);
- fd_data[ready_fd].buf = buf;
- fd_data[ready_fd].sz = h;
- fd_data[ready_fd].remain = h - bytes_left;
- fd_data[ready_fd].cpos = buf + bytes_left;
- }
- break;
- }
- }
- }
- erts_free(ERTS_ALC_T_SYS_READ_BUF, (void *) read_buf);
- }
-}
-
-
-/* fd is the drv_data that is returned from the */
-/* initial start routine */
-/* ready_fd is the descriptor that is ready to read */
-
-static void ready_output(ErlDrvData e, ErlDrvEvent ready_fd)
-{
- int fd = (int)(long)e;
- ErlDrvPort ix = driver_data[fd].port_num;
- int n;
- struct iovec* iv;
- int vsize;
-
-
- if ((iv = (struct iovec*) driver_peekq(ix, &vsize)) == NULL) {
- driver_select(ix, ready_fd, ERL_DRV_WRITE, 0);
- if (driver_data[fd].terminating)
- driver_failure_atom(driver_data[fd].port_num,"normal");
- return; /* 0; */
- }
- vsize = vsize > MAX_VSIZE ? MAX_VSIZE : vsize;
- if ((n = writev(ready_fd, iv, vsize)) > 0) {
- if (driver_deq(ix, n) == 0)
- set_busy_port(ix, 0);
- }
- else if (n < 0) {
- if (errno == ERRNO_BLOCK || errno == EINTR)
- return; /* 0; */
- else {
- int res = errno;
- driver_select(ix, ready_fd, ERL_DRV_WRITE, 0);
- driver_failure_posix(ix, res);
- return; /* -1; */
- }
- }
- return; /* 0; */
-}
-
-static void stop_select(ErlDrvEvent fd, void* _)
-{
- close((int)fd);
-}
-
-#if FDBLOCK
-
-static void
-fd_async(void *async_data)
-{
- int res;
- struct driver_data *dd = (struct driver_data*)async_data;
- SysIOVec *iov0;
- SysIOVec *iov;
- int iovlen;
- int err = 0;
- /* much of this code is stolen from efile_drv:invoke_writev */
- driver_pdl_lock(dd->blocking->pdl);
- iov0 = driver_peekq(dd->port_num, &iovlen);
- iovlen = iovlen < MAXIOV ? iovlen : MAXIOV;
- iov = erts_alloc_fnf(ERTS_ALC_T_SYS_WRITE_BUF,
- sizeof(SysIOVec)*iovlen);
- if (!iov) {
- res = -1;
- err = ENOMEM;
- driver_pdl_unlock(dd->blocking->pdl);
- } else {
- memcpy(iov,iov0,iovlen*sizeof(SysIOVec));
- driver_pdl_unlock(dd->blocking->pdl);
-
- do {
- res = writev(dd->ofd, iov, iovlen);
- } while (res < 0 && errno == EINTR);
- if (res < 0)
- err = errno;
-
- erts_free(ERTS_ALC_T_SYS_WRITE_BUF, iov);
- }
- dd->blocking->res = res;
- dd->blocking->err = err;
-}
-
-void fd_ready_async(ErlDrvData drv_data,
- ErlDrvThreadData thread_data) {
- struct driver_data *dd = (struct driver_data *)thread_data;
- ErlDrvPort port_num = dd->port_num;
-
- ASSERT(dd->blocking);
- ASSERT(dd == (driver_data + (int)(long)drv_data));
-
- if (dd->blocking->res > 0) {
- driver_pdl_lock(dd->blocking->pdl);
- if (driver_deq(port_num, dd->blocking->res) == 0) {
- driver_pdl_unlock(dd->blocking->pdl);
- set_busy_port(port_num, 0);
- if (dd->terminating) {
- /* The port is has been ordered to terminate
- from either fd_flush or port_inp_failure */
- if (dd->terminating == 1)
- driver_failure_atom(port_num, "normal");
- else if (dd->terminating == 2)
- driver_failure_eof(port_num);
- else if (dd->terminating < 0)
- driver_failure_posix(port_num, -dd->terminating);
- return; /* -1; */
- }
- } else {
- driver_pdl_unlock(dd->blocking->pdl);
- /* still data left to write in queue */
- driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL);
- return /* 0; */;
- }
- } else if (dd->blocking->res < 0) {
- if (dd->blocking->err == ERRNO_BLOCK) {
- set_busy_port(port_num, 1);
- /* still data left to write in queue */
- driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL);
- } else
- driver_failure_posix(port_num, dd->blocking->err);
- return; /* -1; */
- }
- return; /* 0; */
-}
-
-#endif
-
void erts_do_break_handling(void)
{
struct termios temp_mode;
@@ -2738,10 +1011,6 @@ erts_sys_unsetenv(char *key)
void
sys_init_io(void)
{
- fd_data = (struct fd_data *)
- erts_alloc(ERTS_ALC_T_FD_TAB, max_files * sizeof(struct fd_data));
- erts_smp_atomic_add_nob(&sys_misc_mem_sz,
- max_files * sizeof(struct fd_data));
}
#if (0) /* unused? */
@@ -2935,179 +1204,6 @@ erl_debug(char* fmt, ...)
#endif /* DEBUG */
-static ERTS_INLINE void
-report_exit_status(ErtsSysReportExit *rep, int status)
-{
- Port *pp;
-#ifdef ERTS_SMP
- CHLD_STAT_UNLOCK;
- pp = erts_thr_id2port_sflgs(rep->port,
- ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP);
- CHLD_STAT_LOCK;
-#else
- pp = erts_id2port_sflgs(rep->port,
- NULL,
- 0,
- ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP);
-#endif
- if (pp) {
- if (rep->ifd >= 0) {
- driver_data[rep->ifd].alive = 0;
- driver_data[rep->ifd].status = status;
- (void) driver_select(ERTS_Port2ErlDrvPort(pp),
- rep->ifd,
- (ERL_DRV_READ|ERL_DRV_USE),
- 1);
- }
- if (rep->ofd >= 0) {
- driver_data[rep->ofd].alive = 0;
- driver_data[rep->ofd].status = status;
- (void) driver_select(ERTS_Port2ErlDrvPort(pp),
- rep->ofd,
- (ERL_DRV_WRITE|ERL_DRV_USE),
- 1);
- }
-#ifdef ERTS_SMP
- erts_thr_port_release(pp);
-#else
- erts_port_release(pp);
-#endif
- }
- erts_free(ERTS_ALC_T_PRT_REP_EXIT, rep);
-}
-
-#if !CHLDWTHR /* ---------------------------------------------------------- */
-
-#define ERTS_REPORT_EXIT_STATUS report_exit_status
-
-static int check_children(void)
-{
- int res = 0;
- int pid;
- int status;
-
-#ifndef ERTS_SMP
- if (children_died)
-#endif
- {
- sys_sigblock(SIGCHLD);
- CHLD_STAT_LOCK;
- while ((pid = waitpid(-1, &status, WNOHANG)) > 0)
- note_child_death(pid, status);
-#ifndef ERTS_SMP
- children_died = 0;
-#endif
- CHLD_STAT_UNLOCK;
- sys_sigrelease(SIGCHLD);
- res = 1;
- }
- return res;
-}
-
-#ifdef ERTS_SMP
-
-void
-erts_check_children(void)
-{
- (void) check_children();
-}
-
-#endif
-
-#elif CHLDWTHR && defined(ERTS_SMP) /* ------------------------------------- */
-
-#define ERTS_REPORT_EXIT_STATUS report_exit_status
-
-#define check_children() (0)
-
-
-#else /* CHLDWTHR && !defined(ERTS_SMP) ------------------------------------ */
-
-#define ERTS_REPORT_EXIT_STATUS initiate_report_exit_status
-
-static ERTS_INLINE void
-initiate_report_exit_status(ErtsSysReportExit *rep, int status)
-{
- rep->next = report_exit_transit_list;
- rep->status = status;
- report_exit_transit_list = rep;
- erts_sys_schedule_interrupt(1);
-}
-
-static int check_children(void)
-{
- int res;
- ErtsSysReportExit *rep;
- CHLD_STAT_LOCK;
- rep = report_exit_transit_list;
- res = rep != NULL;
- while (rep) {
- ErtsSysReportExit *curr_rep = rep;
- rep = rep->next;
- report_exit_status(curr_rep, curr_rep->status);
- }
- report_exit_transit_list = NULL;
- CHLD_STAT_UNLOCK;
- return res;
-}
-
-#endif /* ------------------------------------------------------------------ */
-
-static void note_child_death(int pid, int status)
-{
- ErtsSysReportExit **repp = &report_exit_list;
- ErtsSysReportExit *rep = report_exit_list;
-
- while (rep) {
- if (pid == rep->pid) {
- *repp = rep->next;
- ERTS_REPORT_EXIT_STATUS(rep, status);
- break;
- }
- repp = &rep->next;
- rep = rep->next;
- }
-}
-
-#if CHLDWTHR
-
-static void *
-child_waiter(void *unused)
-{
- int pid;
- int status;
-
-#ifdef ERTS_ENABLE_LOCK_CHECK
- erts_lc_set_thread_name("child waiter");
-#endif
-
- while(1) {
-#ifdef DEBUG
- int waitpid_errno;
-#endif
- pid = waitpid(-1, &status, 0);
-#ifdef DEBUG
- waitpid_errno = errno;
-#endif
- CHLD_STAT_LOCK;
- if (pid < 0) {
- ASSERT(waitpid_errno == ECHILD);
- }
- else {
- children_alive--;
- ASSERT(children_alive >= 0);
- note_child_death(pid, status);
- }
- while (!children_alive)
- CHLD_STAT_WAIT; /* Wait for children to wait on... :) */
- CHLD_STAT_UNLOCK;
- }
-
- return NULL;
-}
-
-#endif
-
/*
* Called from schedule() when it runs out of runnable processes,
* or when Erlang code has performed INPUT_REDUCTIONS reduction
@@ -3116,13 +1212,8 @@ child_waiter(void *unused)
void
erl_sys_schedule(int runnable)
{
-#ifdef ERTS_SMP
ERTS_CHK_IO(!runnable);
-#else
- ERTS_CHK_IO(runnable ? 0 : !check_children());
-#endif
ERTS_SMP_LC_ASSERT(!erts_thr_progress_is_blocking());
- (void) check_children();
}
@@ -3150,10 +1241,6 @@ smp_sig_notify(char c)
static void *
signal_dispatcher_thread_func(void *unused)
{
-#if !CHLDWTHR
- int initialized = 0;
- int notify_check_children = 0;
-#endif
#ifdef ERTS_ENABLE_LOCK_CHECK
erts_lc_set_thread_name("signal_dispatcher");
#endif
@@ -3191,19 +1278,7 @@ signal_dispatcher_thread_func(void *unused)
*/
switch (buf[i]) {
case 0: /* Emulator initialized */
-#if !CHLDWTHR
- initialized = 1;
- if (!notify_check_children)
-#endif
- break;
-#if !CHLDWTHR
- case 'C': /* SIGCHLD */
- if (initialized)
- erts_smp_notify_check_children_needed();
- else
- notify_check_children = 1;
- break;
-#endif
+ break;
case 'I': /* SIGINT */
break_requested();
break;
diff --git a/erts/emulator/sys/unix/sys_drivers.c b/erts/emulator/sys/unix/sys_drivers.c
new file mode 100644
index 0000000000..2a7cd91265
--- /dev/null
+++ b/erts/emulator/sys/unix/sys_drivers.c
@@ -0,0 +1,1862 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 1996-2014. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifdef ISC32
+#define _POSIX_SOURCE
+#define _XOPEN_SOURCE
+#endif
+
+#include <sys/times.h> /* ! */
+#include <time.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <sys/uio.h>
+#include <termios.h>
+#include <ctype.h>
+#include <sys/utsname.h>
+#include <sys/select.h>
+#include <arpa/inet.h>
+
+#ifdef ISC32
+#include <sys/bsdtypes.h>
+#endif
+
+#include <termios.h>
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#define WANT_NONBLOCKING /* must define this to pull in defs from sys.h */
+#include "sys.h"
+
+#ifdef USE_THREADS
+#include "erl_threads.h"
+#endif
+
+extern char **environ;
+extern erts_smp_rwmtx_t environ_rwmtx;
+
+extern erts_smp_atomic_t sys_misc_mem_sz;
+
+static Eterm forker_port;
+
+#define MAX_VSIZE 16 /* Max number of entries allowed in an I/O
+ * vector sock_sendv().
+ */
+/*
+ * Don't need global.h, but erl_cpu_topology.h won't compile otherwise
+ */
+#include "global.h"
+#include "erl_cpu_topology.h"
+
+#include "erl_sys_driver.h"
+#include "sys_uds.h"
+
+#include "erl_child_setup.h"
+
+#if defined IOV_MAX
+#define MAXIOV IOV_MAX
+#elif defined UIO_MAXIOV
+#define MAXIOV UIO_MAXIOV
+#else
+#define MAXIOV 16
+#endif
+
+#ifdef USE_THREADS
+# define FDBLOCK 1
+#else
+# define FDBLOCK 0
+#endif
+
+/* Used by the fd driver iff the fd could not be set to non-blocking */
+typedef struct ErtsSysBlocking_ {
+ ErlDrvPDL pdl;
+ int res;
+ int err;
+ unsigned int pkey;
+} ErtsSysBlocking;
+
+typedef struct fd_data {
+ int fd;
+ char pbuf[4]; /* hold partial packet bytes */
+ int psz; /* size of pbuf */
+ char *buf;
+ char *cpos;
+ int sz;
+ int remain; /* for input on fd */
+} ErtsSysFdData;
+
+typedef struct driver_data {
+ ErlDrvPort port_num;
+ ErtsSysFdData *ofd;
+ ErtsSysFdData *ifd;
+ int packet_bytes;
+ int pid;
+ int alive;
+ int status;
+ int terminating;
+ ErtsSysBlocking *blocking;
+} ErtsSysDriverData;
+
+#define DIR_SEPARATOR_CHAR '/'
+
+#if defined(__ANDROID__)
+#define SHELL "/system/bin/sh"
+#else
+#define SHELL "/bin/sh"
+#endif /* __ANDROID__ */
+
+#if defined(DEBUG)
+#define ERL_BUILD_TYPE_MARKER ".debug"
+#elif defined(PURIFY)
+#define ERL_BUILD_TYPE_MARKER ".purify"
+#elif defined(QUANTIFY)
+#define ERL_BUILD_TYPE_MARKER ".quantify"
+#elif defined(PURECOV)
+#define ERL_BUILD_TYPE_MARKER ".purecov"
+#elif defined(VALGRIND)
+#define ERL_BUILD_TYPE_MARKER ".valgrind"
+#else /* opt */
+#define ERL_BUILD_TYPE_MARKER
+#endif
+
+#ifdef DEBUG
+#define close(fd) do { int res = close(fd); ASSERT(res > -1); } while(0)
+#endif
+
+#define CHILD_SETUP_PROG_NAME "erl_child_setup" ERL_BUILD_TYPE_MARKER
+
+// #define HARD_DEBUG
+#ifdef HARD_DEBUG
+#define driver_select(port_num, fd, flags, onoff) \
+ do { \
+ if (((flags) & ERL_DRV_READ) && onoff) \
+ fprintf(stderr,"%010d %p: read select %d\r\n", __LINE__, port_num, (int)fd); \
+ if (((flags) & ERL_DRV_WRITE) && onoff) \
+ fprintf(stderr,"%010d %p: writ select %d\r\n", __LINE__, port_num, (int)fd); \
+ if (((flags) & ERL_DRV_READ) && !onoff) \
+ fprintf(stderr,"%010d %p: read unsele %d\r\n", __LINE__, port_num, (int)fd); \
+ if (((flags) & ERL_DRV_WRITE) && !onoff) \
+ fprintf(stderr,"%010d %p: writ unsele %d\r\n", __LINE__, port_num, (int)fd); \
+ driver_select_nkp(port_num, fd, flags, onoff); \
+ } while(0)
+#endif
+
+/*
+ * Decreasing the size of it below 16384 is not allowed.
+ */
+
+#define ERTS_SYS_READ_BUF_SZ (64*1024)
+
+/* I. Initialization */
+
+void
+erl_sys_late_init(void)
+{
+ SysDriverOpts opts;
+#ifdef ERTS_SMP
+ Port *port;
+#endif
+
+ sys_signal(SIGPIPE, SIG_IGN); /* Ignore - we'll handle the write failure */
+
+ opts.packet_bytes = 0;
+ opts.use_stdio = 1;
+ opts.redir_stderr = 0;
+ opts.read_write = 0;
+ opts.hide_window = 0;
+ opts.wd = NULL;
+ opts.envir = NULL;
+ opts.exit_status = 0;
+ opts.overlapped_io = 0;
+ opts.spawn_type = ERTS_SPAWN_ANY;
+ opts.argv = NULL;
+ opts.parallelism = erts_port_parallelism;
+
+#ifdef ERTS_SMP
+ port =
+#endif
+ erts_open_driver(&forker_driver, make_internal_pid(0), "forker", &opts, NULL, NULL);
+#ifdef ERTS_SMP
+ erts_mtx_unlock(port->lock);
+#endif
+}
+
+/* II. Prototypes */
+
+/* II.I Spawn prototypes */
+static ErlDrvData spawn_start(ErlDrvPort, char*, SysDriverOpts*);
+static ErlDrvSSizeT spawn_control(ErlDrvData, unsigned int, char *,
+ ErlDrvSizeT, char **, ErlDrvSizeT);
+
+/* II.II Vanilla prototypes */
+static ErlDrvData vanilla_start(ErlDrvPort, char*, SysDriverOpts*);
+
+
+/* II.III FD prototypes */
+static ErlDrvData fd_start(ErlDrvPort, char*, SysDriverOpts*);
+#if FDBLOCK
+static void fd_async(void *);
+static void fd_ready_async(ErlDrvData drv_data, ErlDrvThreadData thread_data);
+#endif
+static ErlDrvSSizeT fd_control(ErlDrvData, unsigned int, char *, ErlDrvSizeT,
+ char **, ErlDrvSizeT);
+static void fd_stop(ErlDrvData);
+static void fd_flush(ErlDrvData);
+
+/* II.IV Common prototypes */
+static void stop(ErlDrvData);
+static void ready_input(ErlDrvData, ErlDrvEvent);
+static void ready_output(ErlDrvData, ErlDrvEvent);
+static void output(ErlDrvData, char*, ErlDrvSizeT);
+static void outputv(ErlDrvData, ErlIOVec*);
+static void stop_select(ErlDrvEvent, void*);
+
+/* II.V Forker prototypes */
+static ErlDrvData forker_start(ErlDrvPort, char*, SysDriverOpts*);
+static void forker_stop(ErlDrvData);
+static void forker_ready_input(ErlDrvData, ErlDrvEvent);
+static void forker_ready_output(ErlDrvData, ErlDrvEvent);
+static ErlDrvSSizeT forker_control(ErlDrvData, unsigned int, char *,
+ ErlDrvSizeT, char **, ErlDrvSizeT);
+
+/* III Driver entries */
+
+/* III.I The spawn driver */
+struct erl_drv_entry spawn_driver_entry = {
+ NULL,
+ spawn_start,
+ stop,
+ output,
+ ready_input,
+ ready_output,
+ "spawn",
+ NULL,
+ NULL,
+ spawn_control,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ ERL_DRV_EXTENDED_MARKER,
+ ERL_DRV_EXTENDED_MAJOR_VERSION,
+ ERL_DRV_EXTENDED_MINOR_VERSION,
+ ERL_DRV_FLAG_USE_PORT_LOCKING | ERL_DRV_FLAG_USE_INIT_ACK,
+ NULL, NULL,
+ stop_select
+};
+
+/* III.II The fd driver */
+struct erl_drv_entry fd_driver_entry = {
+ NULL,
+ fd_start,
+ fd_stop,
+ output,
+ ready_input,
+ ready_output,
+ "fd",
+ NULL,
+ NULL,
+ fd_control,
+ NULL,
+ outputv,
+#if FDBLOCK
+ fd_ready_async, /* ready_async */
+#else
+ NULL,
+#endif
+ fd_flush, /* flush */
+ NULL, /* call */
+ NULL, /* event */
+ ERL_DRV_EXTENDED_MARKER,
+ ERL_DRV_EXTENDED_MAJOR_VERSION,
+ ERL_DRV_EXTENDED_MINOR_VERSION,
+ 0, /* ERL_DRV_FLAGs */
+ NULL, /* handle2 */
+ NULL, /* process_exit */
+ stop_select
+};
+
+/* III.III The vanilla driver */
+struct erl_drv_entry vanilla_driver_entry = {
+ NULL,
+ vanilla_start,
+ stop,
+ output,
+ ready_input,
+ ready_output,
+ "vanilla",
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL, /* flush */
+ NULL, /* call */
+ NULL, /* event */
+ ERL_DRV_EXTENDED_MARKER,
+ ERL_DRV_EXTENDED_MAJOR_VERSION,
+ ERL_DRV_EXTENDED_MINOR_VERSION,
+ 0, /* ERL_DRV_FLAGs */
+ NULL, /* handle2 */
+ NULL, /* process_exit */
+ stop_select
+};
+
+/* III.III The forker driver */
+struct erl_drv_entry forker_driver_entry = {
+ NULL,
+ forker_start,
+ forker_stop,
+ NULL,
+ forker_ready_input,
+ forker_ready_output,
+ "spawn_forker",
+ NULL,
+ NULL,
+ forker_control,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ ERL_DRV_EXTENDED_MARKER,
+ ERL_DRV_EXTENDED_MAJOR_VERSION,
+ ERL_DRV_EXTENDED_MINOR_VERSION,
+ 0,
+ NULL, NULL,
+ stop_select
+};
+
+/* Untility functions */
+
+static int set_blocking_data(ErtsSysDriverData *dd) {
+
+ dd->blocking = erts_alloc(ERTS_ALC_T_SYS_BLOCKING, sizeof(ErtsSysBlocking));
+
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, sizeof(ErtsSysBlocking));
+
+ dd->blocking->pdl = driver_pdl_create(dd->port_num);
+ dd->blocking->res = 0;
+ dd->blocking->err = 0;
+ dd->blocking->pkey = driver_async_port_key(dd->port_num);
+
+ return 1;
+}
+
+static void init_fd_data(ErtsSysFdData *fd_data, int fd)
+{
+ fd_data->fd = fd;
+ fd_data->buf = NULL;
+ fd_data->cpos = NULL;
+ fd_data->remain = 0;
+ fd_data->sz = 0;
+ fd_data->psz = 0;
+}
+
+static ErtsSysDriverData *
+create_driver_data(ErlDrvPort port_num,
+ int ifd,
+ int ofd,
+ int packet_bytes,
+ int read_write,
+ int exit_status,
+ int pid,
+ int is_blocking)
+{
+ Port *prt;
+ ErtsSysDriverData *driver_data;
+ char *data;
+ int size = sizeof(ErtsSysDriverData);
+
+ if (read_write & DO_READ)
+ size += sizeof(ErtsSysFdData);
+
+ if ((read_write & DO_WRITE) &&
+ ((ifd != ofd || ofd == -1) || !(read_write & DO_READ)))
+ size += sizeof(ErtsSysFdData);
+
+ data = erts_alloc(ERTS_ALC_T_DRV_TAB,size);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, size);
+
+ driver_data = (ErtsSysDriverData*)data;
+ data += sizeof(*driver_data);
+
+ prt = erts_drvport2port(port_num);
+ if (prt != ERTS_INVALID_ERL_DRV_PORT)
+ prt->os_pid = pid;
+
+ driver_data->packet_bytes = packet_bytes;
+ driver_data->port_num = port_num;
+ driver_data->pid = pid;
+ driver_data->alive = exit_status ? 1 : 0;
+ driver_data->status = 0;
+ driver_data->terminating = 0;
+ driver_data->blocking = NULL;
+
+ if (read_write & DO_READ) {
+ driver_data->ifd = (ErtsSysFdData*)data;
+ data += sizeof(*driver_data->ifd);
+ init_fd_data(driver_data->ifd, ifd);
+ driver_select(port_num, ifd, (ERL_DRV_READ|ERL_DRV_USE), 1);
+ } else {
+ driver_data->ifd = NULL;
+ }
+
+ if (read_write & DO_WRITE) {
+ if (ofd != -1 && ifd == ofd && read_write & DO_READ) {
+ /* This is for when ifd and ofd are the same fd */
+ driver_data->ofd = driver_data->ifd;
+ } else {
+ driver_data->ofd = (ErtsSysFdData*)data;
+ data += sizeof(*driver_data->ofd);
+ init_fd_data(driver_data->ofd, ofd);
+ }
+ if (is_blocking && FDBLOCK)
+ if (!set_blocking_data(driver_data)) {
+ erts_free(ERTS_ALC_T_DRV_TAB, driver_data);
+ return NULL;
+ }
+ } else {
+ driver_data->ofd = NULL;
+ }
+
+ return driver_data;
+}
+
+/* Spawn driver */
+
+static void close_pipes(int ifd[2], int ofd[2])
+{
+ close(ifd[0]);
+ close(ifd[1]);
+ close(ofd[0]);
+ close(ofd[1]);
+}
+
+static char **build_unix_environment(char *block)
+{
+ int i;
+ int j;
+ int len;
+ char *cp;
+ char **cpp;
+ char** old_env;
+
+ ERTS_SMP_LC_ASSERT(erts_smp_lc_rwmtx_is_rlocked(&environ_rwmtx));
+
+ cp = block;
+ len = 0;
+ while (*cp != '\0') {
+ cp += strlen(cp) + 1;
+ len++;
+ }
+ old_env = environ;
+ while (*old_env++ != NULL) {
+ len++;
+ }
+
+ cpp = (char **) erts_alloc_fnf(ERTS_ALC_T_ENVIRONMENT,
+ sizeof(char *) * (len+1));
+ if (cpp == NULL) {
+ return NULL;
+ }
+
+ cp = block;
+ len = 0;
+ while (*cp != '\0') {
+ cpp[len] = cp;
+ cp += strlen(cp) + 1;
+ len++;
+ }
+
+ i = len;
+ for (old_env = environ; *old_env; old_env++) {
+ char* old = *old_env;
+
+ for (j = 0; j < len; j++) {
+ char *s, *t;
+
+ /* check if cpp[j] equals old
+ before the = sign,
+ i.e.
+ "TMPDIR=/tmp/" */
+ s = cpp[j];
+ t = old;
+ while (*s == *t && *s != '=') {
+ s++, t++;
+ }
+ if (*s == '=' && *t == '=') {
+ break;
+ }
+ }
+
+ if (j == len) { /* New version not found */
+ cpp[len++] = old;
+ }
+ }
+
+ for (j = 0; j < i; ) {
+ size_t last = strlen(cpp[j])-1;
+ if (cpp[j][last] == '=' && strchr(cpp[j], '=') == cpp[j]+last) {
+ cpp[j] = cpp[--len];
+ if (len < i) {
+ i--;
+ } else {
+ j++;
+ }
+ }
+ else {
+ j++;
+ }
+ }
+
+ cpp[len] = NULL;
+ return cpp;
+}
+
+static ErlDrvData spawn_start(ErlDrvPort port_num, char* name,
+ SysDriverOpts* opts)
+{
+#define CMD_LINE_PREFIX_STR "exec "
+#define CMD_LINE_PREFIX_STR_SZ (sizeof(CMD_LINE_PREFIX_STR) - 1)
+
+ int len;
+ char **new_environ;
+ ErtsSysDriverData *dd;
+ char *cmd_line;
+ char wd_buff[MAXPATHLEN+1];
+ char *wd;
+ int ifd[2], ofd[2], stderrfd;
+
+ if (pipe(ifd) < 0) return ERL_DRV_ERROR_ERRNO;
+ errno = EMFILE; /* default for next three conditions */
+ if (ifd[0] >= sys_max_files() || pipe(ofd) < 0) {
+ close(ifd[0]);
+ close(ifd[1]);
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ if (ofd[1] >= sys_max_files()) {
+ close_pipes(ifd, ofd);
+ errno = EMFILE;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+
+ SET_NONBLOCKING(ifd[0]);
+ SET_NONBLOCKING(ofd[1]);
+
+ stderrfd = opts->redir_stderr ? ifd[1] : dup(2);
+
+ if (stderrfd >= sys_max_files() || stderrfd < 0) {
+ close_pipes(ifd, ofd);
+ if (stderrfd > -1)
+ close(stderrfd);
+ return ERL_DRV_ERROR_ERRNO;
+ }
+
+ if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
+ /* started with spawn_executable, not with spawn */
+ len = strlen(name);
+ cmd_line = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP, len + 1);
+ if (!cmd_line) {
+ close_pipes(ifd, ofd);
+ errno = ENOMEM;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ memcpy((void *) cmd_line,(void *) name, len);
+ cmd_line[len] = '\0';
+ len = len + 1;
+ if (access(cmd_line,X_OK) != 0) {
+ int save_errno = errno;
+ erts_free(ERTS_ALC_T_TMP, cmd_line);
+ close_pipes(ifd, ofd);
+ errno = save_errno;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ } else {
+ /* make the string suitable for giving to "sh" */
+ len = strlen(name);
+ cmd_line = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP,
+ CMD_LINE_PREFIX_STR_SZ + len + 1);
+ if (!cmd_line) {
+ close_pipes(ifd, ofd);
+ errno = ENOMEM;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ memcpy((void *) cmd_line,
+ (void *) CMD_LINE_PREFIX_STR,
+ CMD_LINE_PREFIX_STR_SZ);
+ memcpy((void *) (cmd_line + CMD_LINE_PREFIX_STR_SZ), (void *) name, len);
+ cmd_line[CMD_LINE_PREFIX_STR_SZ + len] = '\0';
+ len = CMD_LINE_PREFIX_STR_SZ + len + 1;
+ }
+
+ erts_smp_rwmtx_rlock(&environ_rwmtx);
+
+ if (opts->envir == NULL) {
+ new_environ = environ;
+ } else if ((new_environ = build_unix_environment(opts->envir)) == NULL) {
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+ close_pipes(ifd, ofd);
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+ errno = ENOMEM;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+
+ if (opts->wd == NULL) {
+ if ((wd = getcwd(wd_buff, MAXPATHLEN+1)) == NULL) {
+ /* on some OSs this call opens a fd in the
+ background which means that this can
+ return EMFILE */
+ int err = errno;
+ close_pipes(ifd, ofd);
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+ if (new_environ != environ)
+ erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+ errno = err;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ } else {
+ wd = opts->wd;
+ }
+
+ {
+ struct iovec *io_vector;
+ int iov_len = 5;
+ char nullbuff[] = "\0";
+ int j, i = 0, res;
+ Sint32 buffsz = 0, env_len = 0, argv_len = 0,
+ flags = (opts->use_stdio ? FORKER_FLAG_USE_STDIO : 0)
+ | (opts->exit_status ? FORKER_FLAG_EXIT_STATUS : 0)
+ | (opts->read_write & DO_READ ? FORKER_FLAG_DO_READ : 0)
+ | (opts->read_write & DO_WRITE ? FORKER_FLAG_DO_WRITE : 0);
+
+ /* count number of elements in environment */
+ while(new_environ[env_len] != NULL)
+ env_len++;
+ iov_len += 1 + env_len; /* num envs including size int */
+
+ /* count number of element in argument list */
+ if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
+ if (opts->argv != NULL) {
+ while(opts->argv[argv_len] != NULL)
+ argv_len++;
+ } else {
+ argv_len++;
+ }
+ iov_len += 1 + argv_len; /* num argvs including size int */
+ }
+
+ io_vector = erts_alloc_fnf(ERTS_ALC_T_TMP, sizeof(struct iovec) * iov_len);
+
+ if (!io_vector) {
+ close_pipes(ifd, ofd);
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+ if (new_environ != environ)
+ erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
+ errno = ENOMEM;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+
+ io_vector[i].iov_base = (void*)&buffsz;
+ io_vector[i++].iov_len = sizeof(buffsz);
+
+ io_vector[i].iov_base = (void*)&flags;
+ flags = htonl(flags);
+ io_vector[i++].iov_len = sizeof(flags);
+ buffsz += sizeof(flags);
+
+ io_vector[i].iov_base = cmd_line;
+ io_vector[i++].iov_len = len;
+ buffsz += len;
+
+ io_vector[i].iov_base = wd;
+ io_vector[i].iov_len = strlen(io_vector[i].iov_base) + 1;
+ buffsz += io_vector[i++].iov_len;
+
+ io_vector[i].iov_base = nullbuff;
+ io_vector[i++].iov_len = 1;
+ buffsz += io_vector[i-1].iov_len;
+
+ io_vector[i].iov_base = (void*)&env_len;
+ env_len = htonl(env_len);
+ io_vector[i++].iov_len = sizeof(env_len);
+ buffsz += io_vector[i-1].iov_len;
+
+ for (j = 0; new_environ[j] != NULL; j++) {
+ io_vector[i].iov_base = new_environ[j];
+ io_vector[i++].iov_len = strlen(new_environ[j]) + 1;
+ buffsz += io_vector[i-1].iov_len;
+ }
+
+ /* only append arguments if this was a spawn_executable */
+ if (opts->spawn_type == ERTS_SPAWN_EXECUTABLE) {
+
+ io_vector[i].iov_base = (void*)&argv_len;
+ argv_len = htonl(argv_len);
+ io_vector[i++].iov_len = sizeof(argv_len);
+ buffsz += io_vector[i-1].iov_len;
+
+ if (opts->argv) {
+ /* If there are arguments we copy in the references to
+ them into the iov */
+ for (j = 0; opts->argv[j]; j++) {
+ if (opts->argv[j] == erts_default_arg0)
+ io_vector[i].iov_base = cmd_line;
+ else
+ io_vector[i].iov_base = opts->argv[j];
+ io_vector[i].iov_len = strlen(io_vector[i].iov_base) + 1;
+ buffsz += io_vector[i++].iov_len;
+ }
+ } else {
+ io_vector[i].iov_base = cmd_line;
+ io_vector[i].iov_len = strlen(io_vector[i].iov_base) + 1;
+ buffsz += io_vector[i++].iov_len;
+ }
+ }
+
+ /* we send the request to do the fork */
+ if ((res = writev(ofd[1], io_vector, iov_len > MAXIOV ? MAXIOV : iov_len)) < 0) {
+ if (errno == ERRNO_BLOCK) {
+ res = 0;
+ } else {
+ int err = errno;
+ close_pipes(ifd, ofd);
+ erts_free(ERTS_ALC_T_TMP, io_vector);
+ if (new_environ != environ)
+ erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+ errno = err;
+ return ERL_DRV_ERROR_ERRNO;
+ }
+ }
+
+ if (res < buffsz) {
+ /* we only wrote part of the command payload. Enqueue the rest. */
+ for (i = 0; i < iov_len; i++) {
+ driver_enq(port_num, io_vector[i].iov_base, io_vector[i].iov_len);
+ }
+ driver_deq(port_num, res);
+ driver_select(port_num, ofd[1], ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ }
+
+ erts_free(ERTS_ALC_T_TMP, io_vector);
+ }
+
+ erts_free(ERTS_ALC_T_TMP, (void *) cmd_line);
+
+ if (new_environ != environ)
+ erts_free(ERTS_ALC_T_ENVIRONMENT, (void *) new_environ);
+
+ erts_smp_rwmtx_runlock(&environ_rwmtx);
+
+ dd = create_driver_data(port_num, ifd[0], ofd[1], opts->packet_bytes,
+ DO_WRITE | DO_READ, opts->exit_status,
+ 0, 0);
+
+ {
+ /* send ofd[0] + ifd[1] + stderrfd to forker port */
+ ErtsSysForkerProto *proto =
+ erts_alloc(ERTS_ALC_T_DRV_CTRL_DATA,
+ sizeof(ErtsSysForkerProto));
+ memset(proto, 0, sizeof(ErtsSysForkerProto));
+ proto->action = ErtsSysForkerProtoAction_Start;
+ proto->u.start.fds[0] = ofd[0];
+ proto->u.start.fds[1] = ifd[1];
+ proto->u.start.fds[2] = stderrfd;
+ proto->u.start.port_id = opts->exit_status ? erts_drvport2id(port_num) : THE_NON_VALUE;
+ if (erl_drv_port_control(forker_port, 'S', (char*)proto, sizeof(*proto))) {
+ /* The forker port has been killed, we close both fd's which will
+ make open_port throw an epipe error */
+ close(ofd[0]);
+ close(ifd[1]);
+ }
+ }
+
+ /* we set these fds to negative to mark if
+ they should be closed after the handshake */
+ if (!(opts->read_write & DO_READ))
+ dd->ifd->fd *= -1;
+
+ if (!(opts->read_write & DO_WRITE))
+ dd->ofd->fd *= -1;
+
+ return (ErlDrvData)dd;
+#undef CMD_LINE_PREFIX_STR
+#undef CMD_LINE_PREFIX_STR_SZ
+}
+
+static ErlDrvSSizeT spawn_control(ErlDrvData e, unsigned int cmd, char *buf,
+ ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErtsSysForkerProto *proto = (ErtsSysForkerProto *)buf;
+
+ ASSERT(len == sizeof(*proto));
+ ASSERT(proto->action == ErtsSysForkerProtoAction_SigChld);
+
+ dd->status = proto->u.sigchld.error_number;
+ dd->alive = -1;
+
+ if (dd->ifd)
+ driver_select(dd->port_num, abs(dd->ifd->fd), ERL_DRV_READ | ERL_DRV_USE, 1);
+
+ if (dd->ofd)
+ driver_select(dd->port_num, abs(dd->ofd->fd), ERL_DRV_WRITE | ERL_DRV_USE, 1);
+
+ return 0;
+}
+
+#define FD_DEF_HEIGHT 24
+#define FD_DEF_WIDTH 80
+/* Control op */
+#define FD_CTRL_OP_GET_WINSIZE 100
+
+static int fd_get_window_size(int fd, Uint32 *width, Uint32 *height)
+{
+#ifdef TIOCGWINSZ
+ struct winsize ws;
+ if (ioctl(fd,TIOCGWINSZ,&ws) == 0) {
+ *width = (Uint32) ws.ws_col;
+ *height = (Uint32) ws.ws_row;
+ return 0;
+ }
+#endif
+ return -1;
+}
+
+static ErlDrvSSizeT fd_control(ErlDrvData drv_data,
+ unsigned int command,
+ char *buf, ErlDrvSizeT len,
+ char **rbuf, ErlDrvSizeT rlen)
+{
+ int fd = (int)(long)drv_data;
+ char resbuff[2*sizeof(Uint32)];
+ switch (command) {
+ case FD_CTRL_OP_GET_WINSIZE:
+ {
+ Uint32 w,h;
+ if (fd_get_window_size(fd,&w,&h))
+ return 0;
+ memcpy(resbuff,&w,sizeof(Uint32));
+ memcpy(resbuff+sizeof(Uint32),&h,sizeof(Uint32));
+ }
+ break;
+ default:
+ return 0;
+ }
+ if (rlen < 2*sizeof(Uint32)) {
+ *rbuf = driver_alloc(2*sizeof(Uint32));
+ }
+ memcpy(*rbuf,resbuff,2*sizeof(Uint32));
+ return 2*sizeof(Uint32);
+}
+
+static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
+ SysDriverOpts* opts)
+{
+ int non_blocking = 0;
+
+ if (((opts->read_write & DO_READ) && opts->ifd >= sys_max_files()) ||
+ ((opts->read_write & DO_WRITE) && opts->ofd >= sys_max_files()))
+ return ERL_DRV_ERROR_GENERAL;
+
+ /*
+ * Historical:
+ *
+ * "Note about nonblocking I/O.
+ *
+ * At least on Solaris, setting the write end of a TTY to nonblocking,
+ * will set the input end to nonblocking as well (and vice-versa).
+ * If erl is run in a pipeline like this: cat | erl
+ * the input end of the TTY will be the standard input of cat.
+ * And cat is not prepared to handle nonblocking I/O."
+ *
+ * Actually, the reason for this is not that the tty itself gets set
+ * in non-blocking mode, but that the "input end" (cat's stdin) and
+ * the "output end" (erlang's stdout) are typically the "same" file
+ * descriptor, dup()'ed from a single fd by one of this process'
+ * ancestors.
+ *
+ * The workaround for this problem used to be a rather bad kludge,
+ * interposing an extra process ("internal cat") between erlang's
+ * stdout and the original stdout, allowing erlang to set its stdout
+ * in non-blocking mode without affecting the stdin of the preceding
+ * process in the pipeline - and being a kludge, it caused all kinds
+ * of weird problems.
+ *
+ * So, this is the current logic:
+ *
+ * The only reason to set non-blocking mode on the output fd at all is
+ * if it's something that can cause a write() to block, of course,
+ * i.e. primarily if it points to a tty, socket, pipe, or fifo.
+ *
+ * If we don't set non-blocking mode when we "should" have, and output
+ * becomes blocked, the entire runtime system will be suspended - this
+ * is normally bad of course, and can happen fairly "easily" - e.g. user
+ * hits ^S on tty - but doesn't necessarily happen.
+ *
+ * If we do set non-blocking mode when we "shouldn't" have, the runtime
+ * system will end up seeing EOF on the input fd (due to the preceding
+ * process dying), which typically will cause the entire runtime system
+ * to terminate immediately (due to whatever erlang process is seeing
+ * the EOF taking it as a signal to halt the system). This is *very* bad.
+ *
+ * I.e. we should take a conservative approach, and only set non-
+ * blocking mode when we a) need to, and b) are reasonably certain
+ * that it won't be a problem. And as in the example above, the problem
+ * occurs when input fd and output fd point to different "things".
+ *
+ * However, determining that they are not just the same "type" of
+ * "thing", but actually the same instance of that type of thing, is
+ * unreasonably complex in many/most cases.
+ *
+ * Also, with pipes, sockets, and fifos it's far from obvious that the
+ * user *wants* non-blocking output: If you're running erlang inside
+ * some complex pipeline, you're probably not running a real-time system
+ * that must never stop, but rather *want* it to suspend if the output
+ * channel is "full".
+ *
+ * So, the bottom line: We will only set the output fd non-blocking if
+ * it points to a tty, and either a) the input fd also points to a tty,
+ * or b) we can make sure that setting the output fd non-blocking
+ * doesn't interfere with someone else's input, via a somewhat milder
+ * kludge than the above.
+ *
+ * Also keep in mind that while this code is almost exclusively run as
+ * a result of an erlang open_port({fd,0,1}, ...), that isn't the only
+ * case - it can be called with any old pre-existing file descriptors,
+ * the relations between which (if they're even two) we can only guess
+ * at - still, we try our best...
+ *
+ * Added note OTP 18: Some systems seem to use stdout/stderr to log data
+ * using unix pipes, so we cannot allow the system to block on a write.
+ * Therefore we use an async thread to write the data to fd's that could
+ * not be set to non-blocking. When no async threads are available we
+ * fall back on the old behaviour.
+ *
+ * Also the guarantee about what is delivered to the OS has changed.
+ * Pre 18 the fd driver did no flushing of data before terminating.
+ * Now it does. This is because we want to be able to guarantee that things
+ * such as escripts and friends really have outputted all data before
+ * terminating. This could potentially block the termination of the system
+ * for a very long time, but if the user wants to terminate fast she should
+ * use erlang:halt with flush=false.
+ */
+
+ /* Try to figure out if we can use non-blocking writes */
+ if (opts->read_write & DO_WRITE) {
+
+ /* If we don't have a read end, all bets are off - no non-blocking. */
+ if (opts->read_write & DO_READ) {
+
+ if (isatty(opts->ofd)) { /* output fd is a tty:-) */
+
+ if (isatty(opts->ifd)) { /* input fd is also a tty */
+
+ /* To really do this "right", we should also check that
+ input and output fd point to the *same* tty - but
+ this seems like overkill; ttyname() isn't for free,
+ and this is a very common case - and it's hard to
+ imagine a scenario where setting non-blocking mode
+ here would cause problems - go ahead and do it. */
+
+ non_blocking = 1;
+ SET_NONBLOCKING(opts->ofd);
+
+ } else { /* output fd is a tty, input fd isn't */
+
+ /* This is a "problem case", but also common (see the
+ example above) - i.e. it makes sense to try a bit
+ harder before giving up on non-blocking mode: Try to
+ re-open the tty that the output fd points to, and if
+ successful replace the original one with the "new" fd
+ obtained this way, and set *that* one in non-blocking
+ mode. (Yes, this is a kludge.)
+
+ However, re-opening the tty may fail in a couple of
+ (unusual) cases:
+
+ 1) The name of the tty (or an equivalent one, i.e.
+ same major/minor number) can't be found, because
+ it actually lives somewhere other than /dev (or
+ wherever ttyname() looks for it), and isn't
+ equivalent to any of those that do live in the
+ "standard" place - this should be *very* unusual.
+
+ 2) Permissions on the tty don't allow us to open it -
+ it's perfectly possible to have an fd open to an
+ object whose permissions wouldn't allow us to open
+ it. This is not as unusual as it sounds, one case
+ is if the user has su'ed to someone else (not
+ root) - we have a read/write fd open to the tty
+ (because it has been inherited all the way down
+ here), but we have neither read nor write
+ permission for the tty.
+
+ In these cases, we finally give up, and don't set the
+ output fd in non-blocking mode. */
+
+ char *tty;
+ int nfd;
+
+ if ((tty = ttyname(opts->ofd)) != NULL &&
+ (nfd = open(tty, O_WRONLY)) != -1) {
+ dup2(nfd, opts->ofd);
+ close(nfd);
+ non_blocking = 1;
+ SET_NONBLOCKING(opts->ofd);
+ }
+ }
+ }
+ }
+ }
+ return (ErlDrvData)create_driver_data(port_num, opts->ifd, opts->ofd,
+ opts->packet_bytes,
+ opts->read_write, 0, -1,
+ !non_blocking);
+}
+
+static void clear_fd_data(ErtsSysFdData *fdd)
+{
+ if (fdd->sz > 0) {
+ erts_free(ERTS_ALC_T_FD_ENTRY_BUF, (void *) fdd->buf);
+ ASSERT(erts_smp_atomic_read_nob(&sys_misc_mem_sz) >= fdd->sz);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, -1*fdd->sz);
+ }
+ fdd->buf = NULL;
+ fdd->sz = 0;
+ fdd->remain = 0;
+ fdd->cpos = NULL;
+ fdd->psz = 0;
+}
+
+static void nbio_stop_fd(ErlDrvPort prt, ErtsSysFdData *fdd)
+{
+ driver_select(prt, abs(fdd->fd), DO_READ|DO_WRITE, 0);
+ clear_fd_data(fdd);
+ SET_BLOCKING(abs(fdd->fd));
+
+}
+
+static void fd_stop(ErlDrvData ev) /* Does not close the fds */
+{
+ ErtsSysDriverData* dd = (ErtsSysDriverData*)ev;
+ ErlDrvPort prt = dd->port_num;
+ int sz = sizeof(ErtsSysDriverData);
+
+#if FDBLOCK
+ if (dd->blocking) {
+ erts_free(ERTS_ALC_T_SYS_BLOCKING, dd->blocking);
+ dd->blocking = NULL;
+ sz += sizeof(ErtsSysBlocking);
+ }
+#endif
+
+ if (dd->ifd) {
+ sz += sizeof(ErtsSysFdData);
+ nbio_stop_fd(prt, dd->ifd);
+ }
+ if (dd->ofd && dd->ofd != dd->ifd) {
+ sz += sizeof(ErtsSysFdData);
+ nbio_stop_fd(prt, dd->ofd);
+ }
+
+ erts_free(ERTS_ALC_T_DRV_TAB, dd);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, -sz);
+}
+
+static void fd_flush(ErlDrvData ev)
+{
+ ErtsSysDriverData* dd = (ErtsSysDriverData*)ev;
+ if (!dd->terminating)
+ dd->terminating = 1;
+}
+
+static ErlDrvData vanilla_start(ErlDrvPort port_num, char* name,
+ SysDriverOpts* opts)
+{
+ int flags, fd;
+ ErlDrvData res;
+
+ flags = (opts->read_write == DO_READ ? O_RDONLY :
+ opts->read_write == DO_WRITE ? O_WRONLY|O_CREAT|O_TRUNC :
+ O_RDWR|O_CREAT);
+ if ((fd = open(name, flags, 0666)) < 0)
+ return ERL_DRV_ERROR_GENERAL;
+ if (fd >= sys_max_files()) {
+ close(fd);
+ return ERL_DRV_ERROR_GENERAL;
+ }
+ SET_NONBLOCKING(fd);
+
+ res = (ErlDrvData)(long)create_driver_data(port_num, fd, fd,
+ opts->packet_bytes,
+ opts->read_write, 0, -1, 0);
+ return res;
+}
+
+/* Note that driver_data[fd].ifd == fd if the port was opened for reading, */
+/* otherwise (i.e. write only) driver_data[fd].ofd = fd. */
+
+static void stop(ErlDrvData ev)
+{
+ ErtsSysDriverData* dd = (ErtsSysDriverData*)ev;
+ ErlDrvPort prt = dd->port_num;
+
+ if (dd->ifd) {
+ nbio_stop_fd(prt, dd->ifd);
+ driver_select(prt, abs(dd->ifd->fd), ERL_DRV_USE, 0); /* close(ifd); */
+ }
+
+ if (dd->ofd && dd->ofd != dd->ifd) {
+ nbio_stop_fd(prt, dd->ofd);
+ driver_select(prt, abs(dd->ofd->fd), ERL_DRV_USE, 0); /* close(ofd); */
+ }
+
+ erts_free(ERTS_ALC_T_DRV_TAB, dd);
+}
+
+/* used by fd_driver */
+static void outputv(ErlDrvData e, ErlIOVec* ev)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErlDrvPort ix = dd->port_num;
+ int pb = dd->packet_bytes;
+ int ofd = dd->ofd ? dd->ofd->fd : -1;
+ ssize_t n;
+ ErlDrvSizeT sz;
+ char lb[4];
+ char* lbp;
+ ErlDrvSizeT len = ev->size;
+
+ /* (len > ((unsigned long)-1 >> (4-pb)*8)) */
+ /* if (pb >= 0 && (len & (((ErlDrvSizeT)1 << (pb*8))) - 1) != len) {*/
+ if (((pb == 2) && (len > 0xffff)) || (pb == 1 && len > 0xff)) {
+ driver_failure_posix(ix, EINVAL);
+ return; /* -1; */
+ }
+ /* Handles 0 <= pb <= 4 only */
+ put_int32((Uint32) len, lb);
+ lbp = lb + (4-pb);
+
+ ev->iov[0].iov_base = lbp;
+ ev->iov[0].iov_len = pb;
+ ev->size += pb;
+
+ if (dd->blocking && FDBLOCK)
+ driver_pdl_lock(dd->blocking->pdl);
+
+ if ((sz = driver_sizeq(ix)) > 0) {
+ driver_enqv(ix, ev, 0);
+
+ if (dd->blocking && FDBLOCK)
+ driver_pdl_unlock(dd->blocking->pdl);
+
+ if (sz + ev->size >= (1 << 13))
+ set_busy_port(ix, 1);
+ }
+ else if (!dd->blocking || !FDBLOCK) {
+ /* We try to write directly if the fd in non-blocking */
+ int vsize = ev->vsize > MAX_VSIZE ? MAX_VSIZE : ev->vsize;
+
+ n = writev(ofd, (const void *) (ev->iov), vsize);
+ if (n == ev->size)
+ return; /* 0;*/
+ if (n < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
+ driver_failure_posix(ix, errno);
+ return; /* -1;*/
+ }
+ n = 0;
+ }
+ driver_enqv(ix, ev, n); /* n is the skip value */
+ driver_select(ix, ofd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ }
+#if FDBLOCK
+ else {
+ if (ev->size != 0) {
+ driver_enqv(ix, ev, 0);
+ driver_pdl_unlock(dd->blocking->pdl);
+ driver_async(ix, &dd->blocking->pkey,
+ fd_async, dd, NULL);
+ } else {
+ driver_pdl_unlock(dd->blocking->pdl);
+ }
+ }
+#endif
+ /* return 0;*/
+}
+
+/* Used by spawn_driver and vanilla driver */
+static void output(ErlDrvData e, char* buf, ErlDrvSizeT len)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErlDrvPort ix = dd->port_num;
+ int pb = dd->packet_bytes;
+ int ofd = dd->ofd ? dd->ofd->fd : -1;
+ ssize_t n;
+ ErlDrvSizeT sz;
+ char lb[4];
+ char* lbp;
+ struct iovec iv[2];
+
+ /* (len > ((unsigned long)-1 >> (4-pb)*8)) */
+ if (((pb == 2) && (len > 0xffff))
+ || (pb == 1 && len > 0xff)
+ || dd->pid == 0 /* Attempt at output before port is ready */) {
+ driver_failure_posix(ix, EINVAL);
+ return; /* -1; */
+ }
+ put_int32(len, lb);
+ lbp = lb + (4-pb);
+
+ if ((sz = driver_sizeq(ix)) > 0) {
+ driver_enq(ix, lbp, pb);
+ driver_enq(ix, buf, len);
+ if (sz + len + pb >= (1 << 13))
+ set_busy_port(ix, 1);
+ }
+ else {
+ iv[0].iov_base = lbp;
+ iv[0].iov_len = pb; /* should work for pb=0 */
+ iv[1].iov_base = buf;
+ iv[1].iov_len = len;
+ n = writev(ofd, iv, 2);
+ if (n == pb+len)
+ return; /* 0; */
+ if (n < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK)) {
+ driver_failure_posix(ix, errno);
+ return; /* -1; */
+ }
+ n = 0;
+ }
+ if (n < pb) {
+ driver_enq(ix, lbp+n, pb-n);
+ driver_enq(ix, buf, len);
+ }
+ else {
+ n -= pb;
+ driver_enq(ix, buf+n, len-n);
+ }
+ driver_select(ix, ofd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ }
+ return; /* 0; */
+}
+
+static int port_inp_failure(ErtsSysDriverData *dd, int res)
+ /* Result: 0 (eof) or -1 (error) */
+{
+ int err = errno;
+
+ ASSERT(res <= 0);
+ if (dd->ifd) {
+ driver_select(dd->port_num, dd->ifd->fd, ERL_DRV_READ|ERL_DRV_WRITE, 0);
+ clear_fd_data(dd->ifd);
+ }
+
+ if (dd->blocking && FDBLOCK) {
+ driver_pdl_lock(dd->blocking->pdl);
+ if (driver_sizeq(dd->port_num) > 0) {
+ driver_pdl_unlock(dd->blocking->pdl);
+ /* We have stuff in the output queue, so we just
+ set the state to terminating and wait for fd_async_ready
+ to terminate the port */
+ if (res == 0)
+ dd->terminating = 2;
+ else
+ dd->terminating = -err;
+ return 0;
+ }
+ driver_pdl_unlock(dd->blocking->pdl);
+ }
+
+ if (res == 0) {
+ if (dd->alive == 1) {
+ /*
+ * We have eof and want to report exit status, but the process
+ * hasn't exited yet. When it does ready_input will
+ * driver_select() this fd which will make sure that we get
+ * back here with dd->alive == -1 and dd->status set.
+ */
+ return 0;
+ }
+ else if (dd->alive == -1) {
+ int status = dd->status;
+
+ /* We need not be prepared for stopped/continued processes. */
+ if (WIFSIGNALED(status))
+ status = 128 + WTERMSIG(status);
+ else
+ status = WEXITSTATUS(status);
+ driver_report_exit(dd->port_num, status);
+ }
+ driver_failure_eof(dd->port_num);
+ } else if (dd->ifd) {
+ erl_drv_init_ack(dd->port_num, ERL_DRV_ERROR_ERRNO);
+ } else {
+ driver_failure_posix(dd->port_num, err);
+ }
+ return 0;
+}
+
+/* fd is the drv_data that is returned from the */
+/* initial start routine */
+/* ready_fd is the descriptor that is ready to read */
+
+static void ready_input(ErlDrvData e, ErlDrvEvent ready_fd)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErlDrvPort port_num;
+ int packet_bytes;
+ int res;
+ Uint h;
+
+ port_num = dd->port_num;
+ packet_bytes = dd->packet_bytes;
+
+ ASSERT(abs(dd->ifd->fd) == ready_fd);
+
+ if (dd->pid == 0) {
+ /* the pid is sent from erl_child_setup. spawn driver only. */
+ ErtsSysForkerProto proto;
+ int res;
+
+ if((res = read(ready_fd, &proto, sizeof(proto))) <= 0) {
+ /* hmm, child setup seems to have closed the pipe too early...
+ we close the port as there is not much else we can do */
+ if (res < 0 && errno == ERRNO_BLOCK)
+ return;
+ driver_select(port_num, ready_fd, ERL_DRV_READ, 0);
+ if (res == 0)
+ errno = EPIPE;
+ port_inp_failure(dd, -1);
+ return;
+ }
+
+ ASSERT(proto.action == ErtsSysForkerProtoAction_Go);
+ dd->pid = proto.u.go.os_pid;
+
+ if (dd->pid == -1) {
+ /* Setup failed! The only reason why this should happen is if
+ the fork fails. */
+ errno = proto.u.go.error_number;
+ port_inp_failure(dd, -1);
+ return;
+ }
+
+ proto.action = ErtsSysForkerProtoAction_Ack;
+
+ if (driver_sizeq(port_num) > 0) {
+ driver_enq(port_num, (char*)&proto, sizeof(proto));
+ } else {
+ if (write(abs(dd->ofd->fd), &proto, sizeof(proto)) < 0)
+ if (errno == ERRNO_BLOCK || errno == EINTR)
+ driver_enq(port_num, (char*)&proto, sizeof(proto));
+ /* do nothing on failure here. If the ofd is broken, then
+ the ifd will probably also be broken and trigger
+ a port_inp_failure */
+ }
+
+ if (dd->ifd->fd < 0) {
+ driver_select(port_num, abs(dd->ifd->fd), ERL_DRV_READ|ERL_DRV_USE, 0);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, -sizeof(ErtsSysFdData));
+ dd->ifd = NULL;
+ }
+
+ if (dd->ofd->fd < 0 || driver_sizeq(port_num) > 0)
+ /* we select in order to close fd or write to queue,
+ child setup will close this fd if fd < 0 */
+ driver_select(port_num, abs(dd->ofd->fd), ERL_DRV_WRITE|ERL_DRV_USE, 1);
+
+ erl_drv_set_os_pid(port_num, dd->pid);
+ erl_drv_init_ack(port_num, e);
+ return;
+ }
+
+ if (packet_bytes == 0) {
+ byte *read_buf = (byte *) erts_alloc(ERTS_ALC_T_SYS_READ_BUF,
+ ERTS_SYS_READ_BUF_SZ);
+ res = read(ready_fd, read_buf, ERTS_SYS_READ_BUF_SZ);
+ if (res < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK))
+ port_inp_failure(dd, res);
+ }
+ else if (res == 0)
+ port_inp_failure(dd, res);
+ else
+ driver_output(port_num, (char*) read_buf, res);
+ erts_free(ERTS_ALC_T_SYS_READ_BUF, (void *) read_buf);
+ }
+ else if (dd->ifd->remain > 0) { /* We try to read the remainder */
+ /* space is allocated in buf */
+ res = read(ready_fd, dd->ifd->cpos,
+ dd->ifd->remain);
+ if (res < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK))
+ port_inp_failure(dd, res);
+ }
+ else if (res == 0) {
+ port_inp_failure(dd, res);
+ }
+ else if (res == dd->ifd->remain) { /* we're done */
+ driver_output(port_num, dd->ifd->buf,
+ dd->ifd->sz);
+ clear_fd_data(dd->ifd);
+ }
+ else { /* if (res < dd->ifd->remain) */
+ dd->ifd->cpos += res;
+ dd->ifd->remain -= res;
+ }
+ }
+ else if (dd->ifd->remain == 0) { /* clean fd */
+ byte *read_buf = (byte *) erts_alloc(ERTS_ALC_T_SYS_READ_BUF,
+ ERTS_SYS_READ_BUF_SZ);
+ /* We make one read attempt and see what happens */
+ res = read(ready_fd, read_buf, ERTS_SYS_READ_BUF_SZ);
+ if (res < 0) {
+ if ((errno != EINTR) && (errno != ERRNO_BLOCK))
+ port_inp_failure(dd, res);
+ }
+ else if (res == 0) { /* eof */
+ port_inp_failure(dd, res);
+ }
+ else if (res < packet_bytes - dd->ifd->psz) {
+ memcpy(dd->ifd->pbuf+dd->ifd->psz,
+ read_buf, res);
+ dd->ifd->psz += res;
+ }
+ else { /* if (res >= packet_bytes) */
+ unsigned char* cpos = read_buf;
+ int bytes_left = res;
+
+ while (1) {
+ int psz = dd->ifd->psz;
+ char* pbp = dd->ifd->pbuf + psz;
+
+ while(bytes_left && (psz < packet_bytes)) {
+ *pbp++ = *cpos++;
+ bytes_left--;
+ psz++;
+ }
+
+ if (psz < packet_bytes) {
+ dd->ifd->psz = psz;
+ break;
+ }
+ dd->ifd->psz = 0;
+
+ switch (packet_bytes) {
+ case 1: h = get_int8(dd->ifd->pbuf); break;
+ case 2: h = get_int16(dd->ifd->pbuf); break;
+ case 4: h = get_int32(dd->ifd->pbuf); break;
+ default: ASSERT(0); return; /* -1; */
+ }
+
+ if (h <= (bytes_left)) {
+ driver_output(port_num, (char*) cpos, h);
+ cpos += h;
+ bytes_left -= h;
+ continue;
+ }
+ else { /* The last message we got was split */
+ char *buf = erts_alloc_fnf(ERTS_ALC_T_FD_ENTRY_BUF, h);
+ if (!buf) {
+ errno = ENOMEM;
+ port_inp_failure(dd, -1);
+ }
+ else {
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, h);
+ sys_memcpy(buf, cpos, bytes_left);
+ dd->ifd->buf = buf;
+ dd->ifd->sz = h;
+ dd->ifd->remain = h - bytes_left;
+ dd->ifd->cpos = buf + bytes_left;
+ }
+ break;
+ }
+ }
+ }
+ erts_free(ERTS_ALC_T_SYS_READ_BUF, (void *) read_buf);
+ }
+}
+
+
+/* fd is the drv_data that is returned from the */
+/* initial start routine */
+/* ready_fd is the descriptor that is ready to read */
+
+static void ready_output(ErlDrvData e, ErlDrvEvent ready_fd)
+{
+ ErtsSysDriverData *dd = (ErtsSysDriverData*)e;
+ ErlDrvPort ix = dd->port_num;
+ int n;
+ struct iovec* iv;
+ int vsize;
+
+ if ((iv = (struct iovec*) driver_peekq(ix, &vsize)) == NULL) {
+ driver_select(ix, ready_fd, ERL_DRV_WRITE, 0);
+ if (dd->pid > 0 && dd->ofd->fd < 0) {
+ /* The port was opened with 'in' option, which means we
+ should close the output fd as soon as the command has
+ been sent. */
+ driver_select(ix, ready_fd, ERL_DRV_WRITE|ERL_DRV_USE, 0);
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, -sizeof(ErtsSysFdData));
+ dd->ofd = NULL;
+ }
+ if (dd->terminating)
+ driver_failure_atom(dd->port_num,"normal");
+ return; /* 0; */
+ }
+ vsize = vsize > MAX_VSIZE ? MAX_VSIZE : vsize;
+ if ((n = writev(ready_fd, iv, vsize)) > 0) {
+ if (driver_deq(ix, n) == 0)
+ set_busy_port(ix, 0);
+ }
+ else if (n < 0) {
+ if (errno == ERRNO_BLOCK || errno == EINTR)
+ return; /* 0; */
+ else {
+ int res = errno;
+ driver_select(ix, ready_fd, ERL_DRV_WRITE, 0);
+ driver_failure_posix(ix, res);
+ return; /* -1; */
+ }
+ }
+ return; /* 0; */
+}
+
+static void stop_select(ErlDrvEvent fd, void* _)
+{
+ close((int)fd);
+}
+
+#if FDBLOCK
+
+static void
+fd_async(void *async_data)
+{
+ int res;
+ ErtsSysDriverData *dd = (ErtsSysDriverData *)async_data;
+ SysIOVec *iov0;
+ SysIOVec *iov;
+ int iovlen;
+ int err = 0;
+ /* much of this code is stolen from efile_drv:invoke_writev */
+ driver_pdl_lock(dd->blocking->pdl);
+ iov0 = driver_peekq(dd->port_num, &iovlen);
+ iovlen = iovlen < MAXIOV ? iovlen : MAXIOV;
+ iov = erts_alloc_fnf(ERTS_ALC_T_SYS_WRITE_BUF,
+ sizeof(SysIOVec)*iovlen);
+ if (!iov) {
+ res = -1;
+ err = ENOMEM;
+ driver_pdl_unlock(dd->blocking->pdl);
+ } else {
+ memcpy(iov,iov0,iovlen*sizeof(SysIOVec));
+ driver_pdl_unlock(dd->blocking->pdl);
+
+ do {
+ res = writev(dd->ofd->fd, iov, iovlen);
+ } while (res < 0 && errno == EINTR);
+ if (res < 0)
+ err = errno;
+ err = errno;
+
+ erts_free(ERTS_ALC_T_SYS_WRITE_BUF, iov);
+ }
+ dd->blocking->res = res;
+ dd->blocking->err = err;
+}
+
+void fd_ready_async(ErlDrvData drv_data,
+ ErlDrvThreadData thread_data) {
+ ErtsSysDriverData *dd = (ErtsSysDriverData *)thread_data;
+ ErlDrvPort port_num = dd->port_num;
+
+ ASSERT(dd->blocking);
+
+ if (dd->blocking->res > 0) {
+ driver_pdl_lock(dd->blocking->pdl);
+ if (driver_deq(port_num, dd->blocking->res) == 0) {
+ driver_pdl_unlock(dd->blocking->pdl);
+ set_busy_port(port_num, 0);
+ if (dd->terminating) {
+ /* The port is has been ordered to terminate
+ from either fd_flush or port_inp_failure */
+ if (dd->terminating == 1)
+ driver_failure_atom(port_num, "normal");
+ else if (dd->terminating == 2)
+ driver_failure_eof(port_num);
+ else if (dd->terminating < 0)
+ driver_failure_posix(port_num, -dd->terminating);
+ return; /* -1; */
+ }
+ } else {
+ driver_pdl_unlock(dd->blocking->pdl);
+ /* still data left to write in queue */
+ driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL);
+ return /* 0; */;
+ }
+ } else if (dd->blocking->res < 0) {
+ if (dd->blocking->err == ERRNO_BLOCK) {
+ set_busy_port(port_num, 1);
+ /* still data left to write in queue */
+ driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL);
+ } else
+ driver_failure_posix(port_num, dd->blocking->err);
+ return; /* -1; */
+ }
+ return; /* 0; */
+}
+
+#endif
+
+/* Forker driver */
+
+static int forker_fd;
+
+static ErlDrvData forker_start(ErlDrvPort port_num, char* name,
+ SysDriverOpts* opts)
+{
+
+ int i;
+ int fds[2];
+ int res, unbind;
+ char bindir[MAXPATHLEN];
+ size_t bindirsz = sizeof(bindir);
+ Uint csp_path_sz;
+ char *child_setup_prog;
+
+ forker_port = erts_drvport2id(port_num);
+
+ res = erts_sys_getenv_raw("BINDIR", bindir, &bindirsz);
+ if (res != 0) {
+ if (res < 0)
+ erl_exit(-1,
+ "Environment variable BINDIR is not set\n");
+ if (res > 0)
+ erl_exit(-1,
+ "Value of environment variable BINDIR is too large\n");
+ }
+ if (bindir[0] != DIR_SEPARATOR_CHAR)
+ erl_exit(-1,
+ "Environment variable BINDIR does not contain an"
+ " absolute path\n");
+ csp_path_sz = (strlen(bindir)
+ + 1 /* DIR_SEPARATOR_CHAR */
+ + sizeof(CHILD_SETUP_PROG_NAME)
+ + 1);
+ child_setup_prog = erts_alloc(ERTS_ALC_T_CS_PROG_PATH, csp_path_sz);
+ erts_snprintf(child_setup_prog, csp_path_sz,
+ "%s%c%s",
+ bindir,
+ DIR_SEPARATOR_CHAR,
+ CHILD_SETUP_PROG_NAME);
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) < 0) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "Could not open unix domain socket in spawn_init: %d\n",
+ errno);
+ }
+
+ forker_fd = fds[0];
+
+ unbind = erts_sched_bind_atfork_prepare();
+
+ i = fork();
+
+ if (i == 0) {
+ /* The child */
+ char *cs_argv[FORKER_ARGV_NO_OF_ARGS] =
+ {CHILD_SETUP_PROG_NAME, NULL, NULL};
+ char buff[128];
+
+ erts_sched_bind_atfork_child(unbind);
+
+ snprintf(buff, 128, "%d", sys_max_files());
+ cs_argv[FORKER_ARGV_MAX_FILES] = buff;
+
+ /* We preallocate fd 3 for the uds fd */
+ if (fds[1] != 3) {
+ dup2(fds[1], 3);
+ }
+
+#if defined(USE_SETPGRP_NOARGS) /* SysV */
+ (void) setpgrp();
+#elif defined(USE_SETPGRP) /* BSD */
+ (void) setpgrp(0, getpid());
+#else /* POSIX */
+ (void) setsid();
+#endif
+
+ execv(child_setup_prog, cs_argv);
+ _exit(1);
+ }
+
+ erts_sched_bind_atfork_parent(unbind);
+
+ erts_free(ERTS_ALC_T_CS_PROG_PATH, child_setup_prog);
+
+ close(fds[1]);
+
+ SET_NONBLOCKING(forker_fd);
+
+ driver_select(port_num, forker_fd, ERL_DRV_READ|ERL_DRV_USE, 1);
+
+ return (ErlDrvData)port_num;
+}
+
+static void forker_stop(ErlDrvData e)
+{
+ /* we probably should do something here,
+ the port has been closed by the user. */
+}
+
+static void forker_ready_input(ErlDrvData e, ErlDrvEvent fd)
+{
+ int res;
+ ErtsSysForkerProto *proto;
+
+ proto = erts_alloc(ERTS_ALC_T_DRV_CTRL_DATA, sizeof(*proto));
+
+ if ((res = read(fd, proto, sizeof(*proto))) < 0) {
+ if (errno == ERRNO_BLOCK)
+ return;
+ erl_exit(ERTS_DUMP_EXIT, "Failed to read from erl_child_setup: %d\n", errno);
+ }
+
+ if (res == 0)
+ erl_exit(ERTS_DUMP_EXIT, "erl_child_setup closed\n");
+
+ ASSERT(res == sizeof(*proto));
+
+#ifdef FORKER_PROTO_START_ACK
+ if (proto->action == ErtsSysForkerProtoAction_StartAck) {
+ /* Ideally we would like to not have to ack each Start
+ command being sent over the uds, but it would seem
+ that some operating systems (only observed on FreeBSD)
+ throw away data on the uds when the socket becomes full,
+ so we have to.
+ */
+ ErlDrvPort port_num = (ErlDrvPort)e;
+ int vlen;
+ SysIOVec *iov = driver_peekq(port_num, &vlen);
+ ErtsSysForkerProto *proto = (ErtsSysForkerProto *)iov[0].iov_base;
+
+ close(proto->u.start.fds[0]);
+ close(proto->u.start.fds[1]);
+ if (proto->u.start.fds[1] != proto->u.start.fds[2])
+ close(proto->u.start.fds[2]);
+
+ driver_deq(port_num, sizeof(*proto));
+
+ if (driver_sizeq(port_num) > 0)
+ driver_select(port_num, forker_fd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ } else
+#endif
+ {
+ ASSERT(proto->action == ErtsSysForkerProtoAction_SigChld);
+
+ /* ideally this would be a port_command call, but as command is
+ already used by the spawn_driver, we use control instead.
+ Note that when using erl_drv_port_control it is an asynchronous
+ control. */
+ erl_drv_port_control(proto->u.sigchld.port_id, 'S',
+ (char*)proto, sizeof(*proto));
+ }
+
+}
+
+static void forker_ready_output(ErlDrvData e, ErlDrvEvent fd)
+{
+ ErlDrvPort port_num = (ErlDrvPort)e;
+
+#ifndef FORKER_PROTO_START_ACK
+ while (driver_sizeq(port_num) > 0) {
+#endif
+ int vlen;
+ SysIOVec *iov = driver_peekq(port_num, &vlen);
+ ErtsSysForkerProto *proto = (ErtsSysForkerProto *)iov[0].iov_base;
+ ASSERT(iov[0].iov_len >= (sizeof(*proto)));
+ if (sys_uds_write(forker_fd, (char*)proto, sizeof(*proto),
+ proto->u.start.fds, 3, 0) < 0) {
+ if (errno == ERRNO_BLOCK)
+ return;
+ erl_exit(ERTS_DUMP_EXIT, "Failed to write to erl_child_setup: %d\n", errno);
+ }
+#ifndef FORKER_PROTO_START_ACK
+ close(proto->u.start.fds[0]);
+ close(proto->u.start.fds[1]);
+ if (proto->u.start.fds[1] != proto->u.start.fds[2])
+ close(proto->u.start.fds[2]);
+ driver_deq(port_num, sizeof(*proto));
+ }
+#endif
+
+ driver_select(port_num, forker_fd, ERL_DRV_WRITE, 0);
+}
+
+static ErlDrvSSizeT forker_control(ErlDrvData e, unsigned int cmd, char *buf,
+ ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen)
+{
+ ErtsSysForkerProto *proto = (ErtsSysForkerProto *)buf;
+ ErlDrvPort port_num = (ErlDrvPort)e;
+ int res;
+
+ driver_enq(port_num, buf, len);
+ if (driver_sizeq(port_num) > sizeof(*proto)) {
+ return 0;
+ }
+
+ if ((res = sys_uds_write(forker_fd, (char*)proto, sizeof(*proto),
+ proto->u.start.fds, 3, 0)) < 0) {
+ if (errno == ERRNO_BLOCK) {
+ driver_select(port_num, forker_fd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
+ return 0;
+ }
+ erl_exit(ERTS_DUMP_EXIT, "Failed to write to erl_child_setup: %d\n", errno);
+ }
+
+#ifndef FORKER_PROTO_START_ACK
+ ASSERT(res == sizeof(*proto));
+ close(proto->u.start.fds[0]);
+ close(proto->u.start.fds[1]);
+ if (proto->u.start.fds[1] != proto->u.start.fds[2])
+ close(proto->u.start.fds[2]);
+ driver_deq(port_num, sizeof(*proto));
+#endif
+
+ return 0;
+}
diff --git a/erts/emulator/sys/unix/sys_uds.c b/erts/emulator/sys/unix/sys_uds.c
new file mode 100644
index 0000000000..015d0346a1
--- /dev/null
+++ b/erts/emulator/sys/unix/sys_uds.c
@@ -0,0 +1,155 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2002-2009. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "sys_uds.h"
+
+int
+sys_uds_readv(int fd, struct iovec *iov, size_t iov_len,
+ int *fds, int fd_count, int flags) {
+ struct msghdr msg;
+ struct cmsghdr *cmsg = NULL;
+ char ancillary_buff[256] = {0};
+ int res, i = 0;
+
+ /* setup a place to fill in message contents */
+ memset(&msg, 0, sizeof(struct msghdr));
+ msg.msg_iov = iov;
+ msg.msg_iovlen = iov_len;
+
+ /* provide space for the ancillary data */
+ msg.msg_control = ancillary_buff;
+ msg.msg_controllen = sizeof(ancillary_buff);
+
+ if((res = recvmsg(fd, &msg, flags)) < 0) {
+#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
+ /* When some OS X versions run out of fd's
+ they give EMSGSIZE instead of EMFILE.
+ We remap this as we want the correct
+ error to appear for the user */
+ if (errno == EMSGSIZE)
+ errno = EMFILE;
+#endif
+ return res;
+ }
+
+ if((msg.msg_flags & MSG_CTRUNC) == MSG_CTRUNC)
+ {
+ /* We assume that we have given enough space for any header
+ that are sent to us. So the only remaining reason to get
+ this flag set is if the caller has run out of file descriptors.
+ */
+ errno = EMFILE;
+ return -1;
+ }
+
+ for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg) ) {
+ if ((cmsg->cmsg_level == SOL_SOCKET) &&
+ (cmsg->cmsg_type == SCM_RIGHTS)) {
+ int *cmsg_data = (int *)CMSG_DATA(cmsg);
+ while ((char*)cmsg_data < (char*)cmsg + cmsg->cmsg_len) {
+ if (i < fd_count) {
+ fds[i++] = *cmsg_data++;
+ } else {
+ /* for some strange reason, we have received more FD's
+ than we wanted... close them if we are not running
+ debug. */
+ if(i >= fd_count) abort();
+ close(*cmsg_data++);
+ }
+ }
+ }
+ }
+
+ return res;
+}
+
+int
+sys_uds_read(int fd, char *buff, size_t len,
+ int *fds, int fd_count, int flags) {
+ struct iovec iov;
+ iov.iov_base = buff;
+ iov.iov_len = len;
+ return sys_uds_readv(fd, &iov, 1, fds, fd_count, flags);
+}
+
+
+int
+sys_uds_writev(int fd, struct iovec *iov, size_t iov_len,
+ int *fds, int fd_count, int flags) {
+
+ struct msghdr msg;
+ struct cmsghdr *cmsg = NULL;
+ int res, i;
+
+ /* initialize socket message */
+ memset(&msg, 0, sizeof(struct msghdr));
+
+ /* We flatten the iov if it is too long */
+ if (iov_len > MAXIOV) {
+ int size = 0;
+ char *buff;
+ for (i = 0; i < iov_len; i++)
+ size += iov[i].iov_len;
+ buff = malloc(size);
+
+ for (i = 0; i < iov_len; i++) {
+ memcpy(buff, iov[i].iov_base, iov[i].iov_len);
+ buff += iov[i].iov_len;
+ }
+
+ iov[0].iov_base = buff - size;
+ iov[0].iov_len = size;
+ msg.msg_iov = iov;
+ msg.msg_iovlen = 1;
+ } else {
+ msg.msg_iov = iov;
+ msg.msg_iovlen = iov_len;
+ }
+
+ /* initialize the ancillary data */
+ msg.msg_control = calloc(1, CMSG_SPACE(sizeof(int) * fd_count));
+ msg.msg_controllen = CMSG_SPACE(sizeof(int) * fd_count);
+
+ /* copy the fd array into the ancillary data */
+ cmsg = CMSG_FIRSTHDR(&msg);
+ if(!cmsg) abort();
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(int) * fd_count);
+ memcpy(CMSG_DATA(cmsg), fds, sizeof(int) * fd_count);
+
+ res = sendmsg(fd, &msg, flags);
+
+ if (iov_len > MAXIOV)
+ free(iov[0].iov_base);
+
+ free(msg.msg_control);
+
+ return res;
+}
+
+int
+sys_uds_write(int fd, char *buff, size_t len,
+ int *fds, int fd_count, int flags) {
+ struct iovec iov;
+ iov.iov_base = buff;
+ iov.iov_len = len;
+ return sys_uds_writev(fd, &iov, 1, fds, fd_count, flags);
+}
diff --git a/erts/emulator/sys/unix/sys_uds.h b/erts/emulator/sys/unix/sys_uds.h
new file mode 100644
index 0000000000..844a2804d8
--- /dev/null
+++ b/erts/emulator/sys/unix/sys_uds.h
@@ -0,0 +1,57 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2002-2009. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef _ERL_UNIX_UDS_H
+#define _ERL_UNIX_UDS_H
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#if defined(__sun__) && !defined(_XOPEN_SOURCE)
+#define _XOPEN_SOURCE 500
+#endif
+
+#include <limits.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+
+#if defined IOV_MAX
+#define MAXIOV IOV_MAX
+#elif defined UIO_MAXIOV
+#define MAXIOV UIO_MAXIOV
+#else
+#define MAXIOV 16
+#endif
+
+#include "sys.h"
+
+int sys_uds_readv(int fd, struct iovec *iov, size_t iov_len,
+ int *fds, int fd_count, int flags);
+int sys_uds_read(int fd, char *buff, size_t len,
+ int *fds, int fd_count, int flags);
+int sys_uds_writev(int fd, struct iovec *iov, size_t iov_len,
+ int *fds, int fd_count, int flags);
+int sys_uds_write(int fd, char *buff, size_t len,
+ int *fds, int fd_count, int flags);
+
+#endif /* #ifndef _ERL_UNIX_UDS_H */
diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c
index fce76db28f..76ce25916a 100644
--- a/erts/emulator/sys/win32/sys.c
+++ b/erts/emulator/sys/win32/sys.c
@@ -1334,10 +1334,8 @@ spawn_start(ErlDrvPort port_num, char* utf8_name, SysDriverOpts* opts)
retval = set_driver_data(dp, hFromChild, hToChild, opts->read_write,
opts->exit_status);
if (retval != ERL_DRV_ERROR_GENERAL && retval != ERL_DRV_ERROR_ERRNO) {
- Port *prt = erts_drvport2port(port_num);
- /* We assume that this cannot generate a negative number */
- ASSERT(prt != ERTS_INVALID_ERL_DRV_PORT);
- prt->os_pid = (SWord) pid;
+ /* We assume that this cannot generate a negative number */
+ erl_drv_set_os_pid(port_num, pid);
}
}
@@ -1528,8 +1526,8 @@ create_child_process
* Parse out the program name from the command line (it can be quoted and
* contain spaces).
*/
- newcmdline = (wchar_t *) erts_alloc(ERTS_ALC_T_TMP, 2048*sizeof(wchar_t));
cmdlength = parse_command(origcmd);
+ newcmdline = (wchar_t *) erts_alloc(ERTS_ALC_T_TMP, (MAX_PATH+wcslen(origcmd)-cmdlength)*sizeof(wchar_t));
thecommand = (wchar_t *) erts_alloc(ERTS_ALC_T_TMP, (cmdlength+1)*sizeof(wchar_t));
wcsncpy(thecommand, origcmd, cmdlength);
thecommand[cmdlength] = L'\0';
@@ -3273,6 +3271,12 @@ void erl_sys_init(void)
}
void
+erl_sys_late_init(void)
+{
+ /* do nothing */
+}
+
+void
erts_sys_schedule_interrupt(int set)
{
erts_check_io_interrupt(set);
diff --git a/erts/emulator/test/Makefile b/erts/emulator/test/Makefile
index 77614d455c..8cc47937b7 100644
--- a/erts/emulator/test/Makefile
+++ b/erts/emulator/test/Makefile
@@ -79,6 +79,7 @@ MODULES= \
node_container_SUITE \
nofrag_SUITE \
num_bif_SUITE \
+ message_queue_data_SUITE \
op_SUITE \
port_SUITE \
port_bif_SUITE \
diff --git a/erts/emulator/test/binary_SUITE.erl b/erts/emulator/test/binary_SUITE.erl
index 96ba2f64d4..f8f71efecc 100644
--- a/erts/emulator/test/binary_SUITE.erl
+++ b/erts/emulator/test/binary_SUITE.erl
@@ -521,30 +521,29 @@ external_size_1(Term, Size0, Limit) when Size0 < Limit ->
external_size_1(_, _, _) -> ok.
t_iolist_size(Config) when is_list(Config) ->
- ?line Seed = {erlang:monotonic_time(),
- erlang:time_offset(),
- erlang:unique_integer([positive])},
- ?line io:format("Seed: ~p", [Seed]),
- ?line random:seed(Seed),
- ?line Base = <<0:(1 bsl 20)/unit:8>>,
- ?line Powers = [1 bsl N || N <- lists:seq(2, 37)],
- ?line Sizes0 = [[N - random:uniform(N div 2),
- lists:seq(N-2, N+2),
- N+N div 2,
- N + random:uniform(N div 2)] ||
- N <- Powers],
+ _ = rand:uniform(), %Seed generator
+ io:format("Seed: ~p", [rand:export_seed()]),
+
+ Base = <<0:(1 bsl 20)/unit:8>>,
+ Powers = [1 bsl N || N <- lists:seq(2, 37)],
+ Sizes0 = [[N - rand:uniform(N div 2),
+ lists:seq(N-2, N+2),
+ N+N div 2,
+ N + rand:uniform(N div 2)] ||
+ N <- Powers],
+
%% Test sizes around 1^32 more thoroughly.
FourGigs = 1 bsl 32,
- ?line Sizes1 = [FourGigs+N || N <- lists:seq(-8, 40)] ++ Sizes0,
- ?line Sizes2 = lists:flatten(Sizes1),
- ?line Sizes = lists:usort(Sizes2),
+ Sizes1 = [FourGigs+N || N <- lists:seq(-8, 40)] ++ Sizes0,
+ Sizes2 = lists:flatten(Sizes1),
+ Sizes = lists:usort(Sizes2),
io:format("~p sizes:", [length(Sizes)]),
io:format("~p\n", [Sizes]),
- ?line [Sz = iolist_size(build_iolist(Sz, Base)) || Sz <- Sizes],
+ _ = [Sz = iolist_size(build_iolist(Sz, Base)) || Sz <- Sizes],
ok.
build_iolist(N, Base) when N < 16 ->
- case random:uniform(3) of
+ case rand:uniform(3) of
1 ->
<<Bin:N/binary,_/binary>> = Base,
Bin;
@@ -552,7 +551,7 @@ build_iolist(N, Base) when N < 16 ->
lists:seq(1, N)
end;
build_iolist(N, Base) when N =< byte_size(Base) ->
- case random:uniform(3) of
+ case rand:uniform(3) of
1 ->
<<Bin:N/binary,_/binary>> = Base,
Bin;
@@ -570,7 +569,7 @@ build_iolist(N, Base) when N =< byte_size(Base) ->
end
end;
build_iolist(N0, Base) ->
- Small = random:uniform(15),
+ Small = rand:uniform(15),
Seq = lists:seq(1, Small),
N = N0 - Small,
case N rem 2 of
@@ -1604,7 +1603,7 @@ bit_sized_binary(Bin0) ->
unaligned_sub_bin(Bin, 0) -> Bin;
unaligned_sub_bin(Bin0, Offs) ->
- F = random:uniform(256),
+ F = rand:uniform(256),
Roffs = 8-Offs,
Bin1 = <<F:Offs,Bin0/binary,F:Roffs>>,
Sz = size(Bin0),
diff --git a/erts/emulator/test/bs_bincomp_SUITE.erl b/erts/emulator/test/bs_bincomp_SUITE.erl
index dcd13c19df..8836fe40ae 100644
--- a/erts/emulator/test/bs_bincomp_SUITE.erl
+++ b/erts/emulator/test/bs_bincomp_SUITE.erl
@@ -131,7 +131,7 @@ tracing(Config) when is_list(Config) ->
random_binary() ->
Seq = [1,2,3,4,5,6,7,8,9,10],
- << <<($a + random:uniform($z - $a)):8>> || _ <- Seq >>.
+ << <<($a + rand:uniform($z - $a)):8>> || _ <- Seq >>.
random_binaries(N) when N > 0 ->
random_binary(),
diff --git a/erts/emulator/test/decode_packet_SUITE.erl b/erts/emulator/test/decode_packet_SUITE.erl
index 6a5ca20ac3..65ae94d0dc 100644
--- a/erts/emulator/test/decode_packet_SUITE.erl
+++ b/erts/emulator/test/decode_packet_SUITE.erl
@@ -53,11 +53,8 @@ end_per_group(_GroupName, Config) ->
init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) ->
- Seed = {S1,S2,S3} = {erlang:monotonic_time(),
- erlang:time_offset(),
- erlang:unique_integer()},
- random:seed(S1,S2,S3),
- io:format("*** SEED: ~p ***\n", [Seed]),
+ rand:seed(exsplus),
+ io:format("*** SEED: ~p ***\n", [rand:export_seed()]),
Dog=?t:timetrap(?t:minutes(1)),
[{watchdog, Dog}|Config].
@@ -136,7 +133,7 @@ pack(Type,Body,Rest,BitOffs) ->
{Packet,Unpacked} = pack(Type,Body),
%% Make Bin a sub-bin with an arbitrary bitoffset within Orig
- Prefix = random:uniform(1 bsl BitOffs) - 1,
+ Prefix = rand:uniform(1 bsl BitOffs) - 1,
Orig = <<Prefix:BitOffs,Packet/binary,Rest/bits>>,
<<_:BitOffs,Bin/bits>> = Orig,
{Bin,Unpacked,Orig}.
@@ -151,13 +148,13 @@ pack(4,Bin) ->
Psz = byte_size(Bin),
{<<Psz:32,Bin/binary>>, Bin};
pack(asn1,Bin) ->
- Ident = case random:uniform(3) of
+ Ident = case rand:uniform(3) of
1 -> <<17>>;
2 -> <<16#1f,16#81,17>>;
3 -> <<16#1f,16#81,16#80,16#80,17>>
end,
Psz = byte_size(Bin),
- Length = case random:uniform(4) of
+ Length = case rand:uniform(4) of
1 when Psz < 128 ->
<<Psz:8>>;
R when R=<2 andalso Psz < 16#10000 ->
@@ -177,42 +174,42 @@ pack(sunrm,Bin) ->
{Res,Res};
pack(cdr,Bin) ->
GIOP = <<"GIOP">>,
- Major = random:uniform(256) - 1,
- Minor = random:uniform(256) - 1,
- MType = random:uniform(256) - 1,
+ Major = rand:uniform(256) - 1,
+ Minor = rand:uniform(256) - 1,
+ MType = rand:uniform(256) - 1,
Psz = byte_size(Bin),
- Res = case random:uniform(2) of
+ Res = case rand:uniform(2) of
1 -> <<GIOP/binary,Major:8,Minor:8,0:8,MType:8,Psz:32/big,Bin/binary>>;
2 -> <<GIOP/binary,Major:8,Minor:8,1:8,MType:8,Psz:32/little,Bin/binary>>
end,
{Res,Res};
pack(fcgi,Bin) ->
Ver = 1,
- Type = random:uniform(256) - 1,
- Id = random:uniform(65536) - 1,
- PaddSz = random:uniform(16) - 1,
+ Type = rand:uniform(256) - 1,
+ Id = rand:uniform(65536) - 1,
+ PaddSz = rand:uniform(16) - 1,
Psz = byte_size(Bin),
- Reserv = random:uniform(256) - 1,
+ Reserv = rand:uniform(256) - 1,
Padd = case PaddSz of
0 -> <<>>;
- _ -> list_to_binary([random:uniform(256)-1
+ _ -> list_to_binary([rand:uniform(256)-1
|| _<- lists:seq(1,PaddSz)])
end,
Res = <<Ver:8,Type:8,Id:16,Psz:16/big,PaddSz:8,Reserv:8,Bin/binary>>,
{<<Res/binary,Padd/binary>>, Res};
pack(tpkt,Bin) ->
Ver = 3,
- Reserv = random:uniform(256) - 1,
+ Reserv = rand:uniform(256) - 1,
Size = byte_size(Bin) + 4,
Res = <<Ver:8,Reserv:8,Size:16,Bin/binary>>,
{Res, Res};
pack(ssl_tls,Bin) ->
- Content = case (random:uniform(256) - 1) of
+ Content = case (rand:uniform(256) - 1) of
C when C<128 -> C;
_ -> v2hello
end,
- Major = random:uniform(256) - 1,
- Minor = random:uniform(256) - 1,
+ Major = rand:uniform(256) - 1,
+ Minor = rand:uniform(256) - 1,
pack_ssl(Content,Major,Minor,Bin).
pack_ssl(Content, Major, Minor, Body) ->
@@ -371,10 +368,10 @@ http_do({Bin,[{_Line,PL,PB}|Tail]}, Type) ->
?line {ok, PB, Rest} = decode_pkt(http_with_bin(Type),Bin),
%% Same tests again but as SubBin
- PreLen = random:uniform(64),
- Prefix = random:uniform(1 bsl PreLen) - 1,
- SufLen = random:uniform(64),
- Suffix = random:uniform(1 bsl SufLen) - 1,
+ PreLen = rand:uniform(64),
+ Prefix = rand:uniform(1 bsl PreLen) - 1,
+ SufLen = rand:uniform(64),
+ Suffix = rand:uniform(1 bsl SufLen) - 1,
Orig = <<Prefix:PreLen, Bin/bits, Suffix:SufLen>>,
BinLen = bit_size(Bin),
<<_:PreLen, SubBin:BinLen/bits, _/bits>> = Orig, % Make SubBin
diff --git a/erts/emulator/test/driver_SUITE.erl b/erts/emulator/test/driver_SUITE.erl
index b72d6cbe52..ce55fe3c52 100644
--- a/erts/emulator/test/driver_SUITE.erl
+++ b/erts/emulator/test/driver_SUITE.erl
@@ -224,7 +224,7 @@ outputv_errors_1(Term) ->
port_close(Port).
build_iolist(N, Base) when N < 16 ->
- case random:uniform(3) of
+ case rand:uniform(3) of
1 ->
<<Bin:N/binary,_/binary>> = Base,
Bin;
@@ -232,7 +232,7 @@ build_iolist(N, Base) when N < 16 ->
lists:seq(1, N)
end;
build_iolist(N, Base) when N =< byte_size(Base) ->
- case random:uniform(3) of
+ case rand:uniform(3) of
1 ->
<<Bin:N/binary,_/binary>> = Base,
Bin;
@@ -250,7 +250,7 @@ build_iolist(N, Base) when N =< byte_size(Base) ->
end
end;
build_iolist(N0, Base) ->
- Small = random:uniform(15),
+ Small = rand:uniform(15),
Seq = lists:seq(1, Small),
N = N0 - Small,
case N rem 2 of
@@ -2395,13 +2395,35 @@ z_test(Config) when is_list(Config) ->
check_io_debug() ->
get_stable_check_io_info(),
- {NoErrorFds, NoUsedFds, NoDrvSelStructs, NoDrvEvStructs}
+ {NoErrorFds, NoUsedFds, NoDrvSelStructs, NoDrvEvStructs} = CheckIoDebug
= erts_debug:get_internal_state(check_io_debug),
+ HasGetHost = has_gethost(),
+ ct:log("check_io_debug: ~p~n"
+ "HasGetHost: ~p",[CheckIoDebug, HasGetHost]),
0 = NoErrorFds,
- NoUsedFds = NoDrvSelStructs,
+ if
+ NoUsedFds == NoDrvSelStructs ->
+ ok;
+ HasGetHost andalso (NoUsedFds == (NoDrvSelStructs - 1)) ->
+ %% If the inet_gethost port is alive, we may have
+ %% one extra used fd that is not selected on
+ ok
+ end,
0 = NoDrvEvStructs,
ok.
+has_gethost() ->
+ has_gethost(erlang:ports()).
+has_gethost([P|T]) ->
+ case erlang:port_info(P, name) of
+ {name,"inet_gethost"++_} ->
+ true;
+ _ ->
+ has_gethost(T)
+ end;
+has_gethost([]) ->
+ false.
+
%flush_msgs() ->
% receive
% M ->
@@ -2502,14 +2524,7 @@ random_char() ->
uniform(256) - 1.
uniform(N) ->
- case get(random_seed) of
- undefined ->
- {X, Y, Z} = time(),
- random:seed(X, Y, Z);
- _ ->
- ok
- end,
- random:uniform(N).
+ rand:uniform(N).
erl_millisecs() ->
erl_millisecs(erlang:monotonic_time()).
diff --git a/erts/emulator/test/erts_debug_SUITE.erl b/erts/emulator/test/erts_debug_SUITE.erl
index 35677f9953..bbba829501 100644
--- a/erts/emulator/test/erts_debug_SUITE.erl
+++ b/erts/emulator/test/erts_debug_SUITE.erl
@@ -24,13 +24,13 @@
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
init_per_testcase/2,end_per_testcase/2,
- test_size/1,flat_size_big/1,df/1,
+ test_size/1,flat_size_big/1,df/1,term_type/1,
instructions/1]).
suite() -> [{ct_hooks,[ts_install_cth]}].
all() ->
- [test_size, flat_size_big, df, instructions].
+ [test_size, flat_size_big, df, instructions, term_type].
groups() ->
[].
@@ -138,6 +138,47 @@ flat_size_big_1(Term, Size0, Limit) when Size0 < Limit ->
end;
flat_size_big_1(_, _, _) -> ok.
+
+term_type(Config) when is_list(Config) ->
+ Ts = [{fixnum, 1},
+ {fixnum, -1},
+ {bignum, 1 bsl 300},
+ {bignum, -(1 bsl 300)},
+ {hfloat, 0.0},
+ {hfloat, 0.0/-1},
+ {hfloat, 1.0/(1 bsl 302)},
+ {hfloat, 1.0*(1 bsl 302)},
+ {hfloat, -1.0/(1 bsl 302)},
+ {hfloat, -1.0*(1 bsl 302)},
+ {hfloat, 3.1416},
+ {hfloat, 1.0e18},
+ {hfloat, -3.1416},
+ {hfloat, -1.0e18},
+
+ {heap_binary, <<1,2,3>>},
+ {refc_binary, <<0:(8*80)>>},
+ {sub_binary, <<5:7>>},
+
+ {flatmap, #{ a => 1}},
+ {hashmap, maps:from_list([{I,I}||I <- lists:seq(1,76)])},
+
+ {list, [1,2,3]},
+ {nil, []},
+ {tuple, {1,2,3}},
+ {tuple, {}},
+
+ {export, fun lists:sort/1},
+ {'fun', fun() -> ok end},
+ {pid, self()},
+ {atom, atom}],
+ lists:foreach(fun({E,Val}) ->
+ R = erts_internal:term_type(Val),
+ io:format("expecting term type ~w, got ~w (~p)~n", [E,R,Val]),
+ E = R
+ end, Ts),
+ ok.
+
+
df(Config) when is_list(Config) ->
P0 = pps(),
PrivDir = ?config(priv_dir, Config),
diff --git a/erts/emulator/test/evil_SUITE.erl b/erts/emulator/test/evil_SUITE.erl
index 484d2a8bf5..d28e4d9596 100644
--- a/erts/emulator/test/evil_SUITE.erl
+++ b/erts/emulator/test/evil_SUITE.erl
@@ -382,10 +382,10 @@ my_appender_1(N, T0) ->
my_appender_1(N-1, T).
seed() ->
- random:seed(3172, 9815, 20129).
+ rand:seed(exsplus, {3172,9815,20129}).
rnd_term() ->
- U0 = random:uniform(),
+ U0 = rand:uniform(),
B = <<U0/float>>,
{U0,U0 * 2.5 + 3.14,[U0*2.3,B]}.
diff --git a/erts/emulator/test/hash_SUITE.erl b/erts/emulator/test/hash_SUITE.erl
index 2ea49467b8..1b2acf48e1 100644
--- a/erts/emulator/test/hash_SUITE.erl
+++ b/erts/emulator/test/hash_SUITE.erl
@@ -223,11 +223,10 @@ basic_test() ->
range_test() ->
- random:seed(),
F = fun(From,From,_FF) ->
ok;
(From,To,FF) ->
- R = random:uniform(16#FFFFFFFFFFFFFFFF),
+ R = rand:uniform(16#FFFFFFFFFFFFFFFF),
X = erlang:phash(R, From),
Y = erlang:phash(R, 16#100000000) - 1,
Z = (Y rem From) + 1,
@@ -265,14 +264,13 @@ spread_test(N) ->
cmp_test(N) ->
- % No need to save seed, the error indicates what number caused it.
- random:seed(),
do_cmp_hashes(N,8).
+
do_cmp_hashes(0,_) ->
ok;
do_cmp_hashes(N,Steps) ->
- R0 = random:uniform(1 bsl Steps - 1) + random:uniform(16#FFFFFFFF),
- R = case random:uniform(2) of
+ R0 = rand:uniform(1 bsl Steps - 1) + rand:uniform(16#FFFFFFFF),
+ R = case rand:uniform(2) of
1 ->
R0;
_ ->
diff --git a/erts/emulator/test/map_SUITE.erl b/erts/emulator/test/map_SUITE.erl
index 6890c42b7a..5e9814be60 100644
--- a/erts/emulator/test/map_SUITE.erl
+++ b/erts/emulator/test/map_SUITE.erl
@@ -1511,11 +1511,8 @@ t_map_equal(Config) when is_list(Config) ->
t_map_compare(Config) when is_list(Config) ->
- Seed = {erlang:monotonic_time(),
- erlang:time_offset(),
- erlang:unique_integer()},
- io:format("seed = ~p\n", [Seed]),
- random:seed(Seed),
+ rand:seed(exsplus),
+ io:format("seed = ~p\n", [rand:export_seed()]),
repeat(100, fun(_) -> float_int_compare() end, []),
repeat(100, fun(_) -> recursive_compare() end, []),
ok.
@@ -1533,7 +1530,7 @@ float_int_compare() ->
numeric_keys(N) ->
lists:foldl(fun(_,Acc) ->
- Int = random:uniform(N*4) - N*2,
+ Int = rand:uniform(N*4) - N*2,
Float = float(Int),
[Int, Float, Float * 0.99, Float * 1.01 | Acc]
end,
@@ -1564,7 +1561,7 @@ do_compare([Gen1, Gen2]) ->
%% Change one key from int to float (or vice versa) and check compare
ML1 = maps:to_list(M1),
- {K1,V1} = lists:nth(random:uniform(length(ML1)), ML1),
+ {K1,V1} = lists:nth(rand:uniform(length(ML1)), ML1),
case K1 of
I when is_integer(I) ->
case maps:find(float(I),M1) of
@@ -1655,9 +1652,9 @@ cmp_others(T1, T2, _) ->
map_gen(Pairs, Size) ->
{_,L} = lists:foldl(fun(_, {Keys, Acc}) ->
- KI = random:uniform(size(Keys)),
+ KI = rand:uniform(size(Keys)),
K = element(KI,Keys),
- KV = element(random:uniform(size(K)), K),
+ KV = element(rand:uniform(size(K)), K),
{erlang:delete_element(KI,Keys), [KV | Acc]}
end,
{Pairs, []},
@@ -1697,15 +1694,15 @@ term_gen_recursive(Leafs, Flags, Depth) ->
MaxDepth = 10,
Rnd = case {Flags, Depth} of
{_, MaxDepth} -> % Only leafs
- random:uniform(size(Leafs)) + 3;
+ rand:uniform(size(Leafs)) + 3;
{0, 0} -> % Only containers
- random:uniform(3);
+ rand:uniform(3);
{0,_} -> % Anything
- random:uniform(size(Leafs)+3)
+ rand:uniform(size(Leafs)+3)
end,
case Rnd of
1 -> % Make map
- Size = random:uniform(size(Leafs)),
+ Size = rand:uniform(size(Leafs)),
lists:foldl(fun(_, {Acc1,Acc2}) ->
{K1,K2} = term_gen_recursive(Leafs, Flags,
Depth+1),
@@ -1720,7 +1717,7 @@ term_gen_recursive(Leafs, Flags, Depth) ->
{Cdr1,Cdr2} = term_gen_recursive(Leafs, Flags, Depth+1),
{[Car1 | Cdr1], [Car2 | Cdr2]};
3 -> % Make tuple
- Size = random:uniform(size(Leafs)),
+ Size = rand:uniform(size(Leafs)),
L = lists:map(fun(_) -> term_gen_recursive(Leafs, Flags, Depth+1) end,
lists:seq(1,Size)),
{L1, L2} = lists:unzip(L),
@@ -1729,7 +1726,7 @@ term_gen_recursive(Leafs, Flags, Depth) ->
N -> % Make leaf
case element(N-3, Leafs) of
I when is_integer(I) ->
- case random:uniform(4) of
+ case rand:uniform(4) of
1 -> {I, float(I)};
2 -> {float(I), I};
_ -> {I,I}
@@ -2598,7 +2595,7 @@ hashmap_balance(KeyFun) ->
F = fun(I, {M0,Max0}) ->
Key = KeyFun(I),
M1 = M0#{Key => Key},
- Max1 = case erts_internal:map_type(M1) of
+ Max1 = case erts_internal:term_type(M1) of
hashmap ->
Nodes = hashmap_nodes(M1),
Avg = maps:size(M1) * 0.4,
@@ -2999,21 +2996,38 @@ id(I) -> I.
t_gc_rare_map_overflow(Config) ->
Pa = filename:dirname(code:which(?MODULE)),
{ok, Node} = test_server:start_node(gc_rare_map_overflow, slave, [{args, "-pa \""++Pa++"\""}]),
- Echo = spawn_link(Node, fun Loop() -> receive {From,Msg} -> From ! Msg
- end,
- Loop()
- end),
- FatMap = fatmap(34),
- false = (flatmap =:= erts_internal:map_type(FatMap)),
-
- t_gc_rare_map_overflow_do(Echo, FatMap, fun() -> erlang:garbage_collect() end),
-
- % Repeat test for minor gc:
- minor_collect(), % need this to make the next gc really be a minor
- t_gc_rare_map_overflow_do(Echo, FatMap, fun() -> true = minor_collect() end),
-
- unlink(Echo),
- test_server:stop_node(Node).
+ erts_debug:set_internal_state(available_internal_state, true),
+ try
+ Echo = spawn_link(Node, fun Loop() -> receive {From,Msg} -> From ! Msg
+ end,
+ Loop()
+ end),
+ FatMap = fatmap(34),
+ false = (flatmap =:= erts_internal:term_type(FatMap)),
+
+ t_gc_rare_map_overflow_do(Echo, FatMap, fun() -> erlang:garbage_collect() end),
+
+ %% Repeat test for minor gc:
+ t_gc_rare_map_overflow_do(Echo, FatMap, fun() -> minor_collect() end),
+
+ unlink(Echo),
+
+ %% Test fatmap in exit signal
+ Exiter = spawn_link(Node, fun Loop() -> receive {From,Msg} ->
+ "not_a_map" = Msg % badmatch!
+ end,
+ Loop()
+ end),
+ process_flag(trap_exit, true),
+ Exiter ! {self(), FatMap},
+ {'EXIT', Exiter, {{badmatch,FatMap}, _}} = receive M -> M end,
+ ok
+
+ after
+ process_flag(trap_exit, false),
+ erts_debug:set_internal_state(available_internal_state, false),
+ test_server:stop_node(Node)
+ end.
t_gc_rare_map_overflow_do(Echo, FatMap, GcFun) ->
Master = self(),
@@ -3033,15 +3047,11 @@ t_gc_rare_map_overflow_do(Echo, FatMap, GcFun) ->
ok.
minor_collect() ->
- minor_collect(minor_gcs()).
-
-minor_collect(Before) ->
+ Before = minor_gcs(),
+ erts_debug:set_internal_state(force_gc, self()),
+ erlang:yield(),
After = minor_gcs(),
- case After of
- _ when After > Before -> true;
- _ when After =:= Before -> minor_collect(Before);
- 0 -> false
- end.
+ io:format("minor_gcs: ~p -> ~p\n", [Before, After]).
minor_gcs() ->
{garbage_collection, Info} = process_info(self(), garbage_collection),
@@ -3051,7 +3061,7 @@ minor_gcs() ->
%% Generate a map with N (or N+1) keys that has an abnormal heap demand.
%% Done by finding keys that collide in the first 32-bit hash.
fatmap(N) ->
- erts_debug:set_internal_state(available_internal_state, true),
+ %%erts_debug:set_internal_state(available_internal_state, true),
Table = ets:new(void, [bag, private]),
Seed0 = rand:seed_s(exsplus, {4711, 3141592, 2718281}),
diff --git a/erts/emulator/test/message_queue_data_SUITE.erl b/erts/emulator/test/message_queue_data_SUITE.erl
new file mode 100644
index 0000000000..11481409aa
--- /dev/null
+++ b/erts/emulator/test/message_queue_data_SUITE.erl
@@ -0,0 +1,239 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2014. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(message_queue_data_SUITE).
+
+-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
+ init_per_group/2,end_per_group/2,
+ init_per_testcase/2,end_per_testcase/2]).
+-export([basic/1, process_info_messages/1]).
+
+-export([basic_test/1]).
+
+-include_lib("test_server/include/test_server.hrl").
+
+init_per_testcase(Case, Config) ->
+ ?line Dog=test_server:timetrap(test_server:minutes(2)),
+ [{watchdog, Dog}, {testcase, Case}|Config].
+
+end_per_testcase(_, Config) ->
+ Dog=?config(watchdog, Config),
+ test_server:timetrap_cancel(Dog),
+ ok.
+
+suite() -> [{ct_hooks,[ts_install_cth]}].
+
+all() ->
+ [basic, process_info_messages].
+
+groups() ->
+ [].
+
+init_per_suite(Config) ->
+%% erts_debug:set_internal_state(available_internal_state, true),
+ Config.
+
+end_per_suite(_Config) ->
+%% erts_debug:set_internal_state(available_internal_state, false),
+ ok.
+
+init_per_group(_GroupName, Config) ->
+ Config.
+
+end_per_group(_GroupName, Config) ->
+ Config.
+
+%%
+%%
+%% Test cases
+%%
+%%
+
+basic(Config) when is_list(Config) ->
+
+ basic_test(erlang:system_info(message_queue_data)),
+
+ {ok, Node1} = start_node(Config, "+xmqd off_heap"),
+ ok = rpc:call(Node1, ?MODULE, basic_test, [off_heap]),
+ stop_node(Node1),
+
+ {ok, Node2} = start_node(Config, "+xmqd on_heap"),
+ ok = rpc:call(Node2, ?MODULE, basic_test, [on_heap]),
+ stop_node(Node2),
+
+ {ok, Node3} = start_node(Config, "+xmqd mixed"),
+ ok = rpc:call(Node3, ?MODULE, basic_test, [mixed]),
+ stop_node(Node3),
+
+ ok.
+
+is_valid_mqd_value(off_heap) ->
+ true;
+is_valid_mqd_value(on_heap) ->
+ true;
+is_valid_mqd_value(mixed) ->
+ true;
+is_valid_mqd_value(_) ->
+ false.
+
+
+basic_test(Default) ->
+
+ Default = erlang:system_info(message_queue_data),
+ true = is_valid_mqd_value(Default),
+
+ {message_queue_data, Default} = process_info(self(), message_queue_data),
+ Default = process_flag(message_queue_data, off_heap),
+ {message_queue_data, off_heap} = process_info(self(), message_queue_data),
+ off_heap = process_flag(message_queue_data, on_heap),
+ {message_queue_data, on_heap} = process_info(self(), message_queue_data),
+ on_heap = process_flag(message_queue_data, mixed),
+ {message_queue_data, mixed} = process_info(self(), message_queue_data),
+ mixed = process_flag(message_queue_data, Default),
+ {'EXIT', _} = (catch process_flag(message_queue_data, blupp)),
+
+ P1 = spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link]),
+ {message_queue_data, Default} = process_info(P1, message_queue_data),
+ unlink(P1),
+ exit(P1, bye),
+
+ P2 = spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link, {message_queue_data, off_heap}]),
+ {message_queue_data, off_heap} = process_info(P2, message_queue_data),
+ unlink(P2),
+ exit(P2, bye),
+
+ P3 = spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link, {message_queue_data, on_heap}]),
+ {message_queue_data, on_heap} = process_info(P3, message_queue_data),
+ unlink(P3),
+ exit(P3, bye),
+
+ P4 = spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link, {message_queue_data, mixed}]),
+ {message_queue_data, mixed} = process_info(P4, message_queue_data),
+ unlink(P4),
+ exit(P4, bye),
+
+ {'EXIT', _} = (catch spawn_opt(fun () -> receive after infinity -> ok end end,
+ [link, {message_queue_data, blapp}])),
+
+ ok.
+
+process_info_messages(Config) when is_list(Config) ->
+ Tester = self(),
+ P1 = spawn_opt(fun () ->
+ receive after 500 -> ok end,
+ mixed = process_flag(message_queue_data, off_heap),
+ Tester ! first,
+ receive after 500 -> ok end,
+ off_heap = process_flag(message_queue_data, on_heap),
+ Tester ! second,
+ receive after 500 -> ok end,
+ on_heap = process_flag(message_queue_data, mixed),
+ Tester ! third,
+ receive after 500 -> ok end,
+ mixed = process_flag(message_queue_data, off_heap),
+ Tester ! fourth,
+
+ receive after infinity -> ok end
+ end,
+ [link, {message_queue_data, mixed}]),
+
+ P1 ! "A",
+ receive first -> ok end,
+ P1 ! "B",
+ receive second -> ok end,
+ P1 ! "C",
+ receive third -> ok end,
+ P1 ! "D",
+ receive fourth -> ok end,
+ P1 ! "E",
+
+ {messages, ["A", "B", "C", "D", "E"]} = process_info(P1, messages),
+
+ P2 = spawn_opt(fun () ->
+ receive after 500 -> ok end,
+ mixed = process_flag(message_queue_data, off_heap),
+ Tester ! first,
+ receive after 500 -> ok end,
+ off_heap = process_flag(message_queue_data, on_heap),
+ Tester ! second,
+ receive after 500 -> ok end,
+ on_heap = process_flag(message_queue_data, mixed),
+ Tester ! third,
+ receive after 500 -> ok end,
+ mixed = process_flag(message_queue_data, off_heap),
+ Tester ! fourth,
+ receive after 500 -> ok end,
+
+ Tester ! process_info(self(), messages),
+
+ receive M1 -> M1 = "A" end,
+ receive M2 -> M2 = "B" end,
+ receive M3 -> M3 = "C" end,
+ receive M4 -> M4 = "D" end,
+ receive M5 -> M5 = "E" end,
+
+ Tester ! self()
+ end,
+ [link, {message_queue_data, mixed}]),
+
+ P2 ! "A",
+ receive first -> ok end,
+ P2 ! "B",
+ receive second -> ok end,
+ P2 ! "C",
+ receive third -> ok end,
+ P2 ! "D",
+ receive fourth -> ok end,
+ P2 ! "E",
+
+ receive
+ Msg ->
+ {messages, ["A", "B", "C", "D", "E"]} = Msg
+ end,
+
+ receive P2 -> ok end,
+
+ ok.
+
+%%
+%%
+%% helpers
+%%
+%%
+
+start_node(Config) ->
+ start_node(Config, []).
+start_node(Config, Opts) when is_list(Config), is_list(Opts) ->
+ Pa = filename:dirname(code:which(?MODULE)),
+ Name = list_to_atom(atom_to_list(?MODULE)
+ ++ "-"
+ ++ atom_to_list(?config(testcase, Config))
+ ++ "-"
+ ++ integer_to_list(erlang:system_time(seconds))
+ ++ "-"
+ ++ integer_to_list(erlang:unique_integer([positive]))),
+ ?t:start_node(Name, slave, [{args, Opts++" -pa "++Pa}]).
+
+stop_node(Node) ->
+ ?t:stop_node(Node).
diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl
index af2b955184..56b36d2626 100644
--- a/erts/emulator/test/nif_SUITE.erl
+++ b/erts/emulator/test/nif_SUITE.erl
@@ -1192,11 +1192,8 @@ send3(Config) when is_list(Config) ->
%% Let a number of processes send random message blobs between each other
%% using enif_send. Kill and spawn new ones randomly to keep a ~constant
%% number of workers running.
- Seed = {erlang:monotonic_time(),
- erlang:time_offset(),
- erlang:unique_integer()},
- io:format("seed: ~p\n",[Seed]),
- random:seed(Seed),
+ rand:seed(exsplus),
+ io:format("seed: ~p\n",[rand:export_seed()]),
ets:new(nif_SUITE,[named_table,public]),
?line true = ets:insert(nif_SUITE,{send3,0,0,0,0}),
timer:send_after(10000, timeout), % Run for 10 seconds
@@ -1229,7 +1226,7 @@ send3_controller(SpawnCnt0, Mons0, Pids0, Tick) ->
after Tick ->
Max = 20,
N = length(Pids0),
- PidN = random:uniform(Max),
+ PidN = rand:uniform(Max),
%%io:format("N=~p PidN=~p Pids0=~p\n", [N,PidN,Pids0]),
case PidN > N of
true ->
@@ -1293,7 +1290,7 @@ send3_proc(Pids0, Counters={Rcv,SndOk,SndFail}, State0) ->
end.
send3_proc_send(Pids, {Rcv,SndOk,SndFail}, State0) ->
- To = lists:nth(random:uniform(length(Pids)),Pids),
+ To = lists:nth(rand:uniform(length(Pids)),Pids),
Blob = send3_make_blob(),
State1 = send3_new_state(State0,Blob),
case send3_send(To, Blob) of
@@ -1305,12 +1302,12 @@ send3_proc_send(Pids, {Rcv,SndOk,SndFail}, State0) ->
send3_make_blob() ->
- case random:uniform(20)-1 of
+ case rand:uniform(20)-1 of
0 -> {term,[]};
N ->
MsgEnv = alloc_msgenv(),
repeat(N bsr 1,
- fun(_) -> grow_blob(MsgEnv,other_term(),random:uniform(1 bsl 20))
+ fun(_) -> grow_blob(MsgEnv,other_term(),rand:uniform(1 bsl 20))
end, void),
case (N band 1) of
0 -> {term,copy_blob(MsgEnv)};
@@ -1320,7 +1317,7 @@ send3_make_blob() ->
send3_send(Pid, Msg) ->
%% 90% enif_send and 10% normal bang
- case random:uniform(10) of
+ case rand:uniform(10) of
1 -> send3_send_bang(Pid,Msg);
_ -> send3_send_nif(Pid,Msg)
end.
@@ -1341,7 +1338,7 @@ send3_send_bang(Pid, {msgenv,MsgEnv}) ->
true.
send3_new_state(State, Blob) ->
- case random:uniform(5+2) of
+ case rand:uniform(5+2) of
N when N =< 5-> setelement(N, State, Blob);
_ -> State % Don't store blob
end.
diff --git a/erts/emulator/test/op_SUITE.erl b/erts/emulator/test/op_SUITE.erl
index 6eda78a57b..65a5a4c505 100644
--- a/erts/emulator/test/op_SUITE.erl
+++ b/erts/emulator/test/op_SUITE.erl
@@ -97,10 +97,11 @@ relop_simple(Config) when is_list(Config) ->
lists:foreach(fun({A,B}) -> relop_simple_do(A,B) end,
Combos),
- repeat(fun() -> Size = random:uniform(100),
- Rnd1 = make_rand_term(Size),
- {Rnd2,0} = clone_and_mutate(Rnd1, random:uniform(Size)),
- relop_simple_do(Rnd1,Rnd2)
+ repeat(fun() ->
+ Size = rand:uniform(100),
+ Rnd1 = make_rand_term(Size),
+ {Rnd2,0} = clone_and_mutate(Rnd1, rand:uniform(Size)),
+ relop_simple_do(Rnd1,Rnd2)
end,
1000),
ok.
@@ -158,7 +159,7 @@ cmp_emu(A,B) ->
make_rand_term(1) ->
make_rand_term_single();
make_rand_term(Arity) ->
- case random:uniform(3) of
+ case rand:uniform(3) of
1 ->
make_rand_list(Arity);
2 ->
@@ -169,17 +170,17 @@ make_rand_term(Arity) ->
end.
make_rand_term_single() ->
- Range = 1 bsl random:uniform(200),
- case random:uniform(12) of
+ Range = 1 bsl rand:uniform(200),
+ case rand:uniform(12) of
1 -> random;
2 -> uniform;
- 3 -> random:uniform(Range) - (Range div 2);
- 4 -> Range * (random:uniform() - 0.5);
+ 3 -> rand:uniform(Range) - (Range div 2);
+ 4 -> Range * (rand:uniform() - 0.5);
5 -> 0;
6 -> 0.0;
7 -> make_ref();
8 -> self();
- 9 -> term_to_binary(random:uniform(Range));
+ 9 -> term_to_binary(rand:uniform(Range));
10 -> fun(X) -> X*Range end;
11 -> fun(X) -> X/Range end;
12 -> []
@@ -188,7 +189,7 @@ make_rand_term_single() ->
make_rand_term_rand_size(1) ->
{make_rand_term(1), 0};
make_rand_term_rand_size(MaxArity) ->
- Arity = random:uniform(MaxArity-1),
+ Arity = rand:uniform(MaxArity-1),
{make_rand_term(Arity), MaxArity-Arity}.
make_rand_list(0) -> [];
diff --git a/erts/emulator/test/port_SUITE.erl b/erts/emulator/test/port_SUITE.erl
index 3d0509a28c..ff75ee86d6 100644
--- a/erts/emulator/test/port_SUITE.erl
+++ b/erts/emulator/test/port_SUITE.erl
@@ -82,10 +82,11 @@
mul_basic/1, mul_slow_writes/1,
dying_port/1, port_program_with_path/1,
open_input_file_port/1, open_output_file_port/1,
+ count_fds/1,
iter_max_ports/1, eof/1, input_only/1, output_only/1,
name1/1,
t_binary/1, parallell/1, t_exit/1,
- env/1, bad_env/1, cd/1, exit_status/1,
+ env/1, huge_env/1, bad_env/1, cd/1, exit_status/1,
tps_16_bytes/1, tps_1K/1, line/1, stderr_to_stdout/1,
otp_3906/1, otp_4389/1, win_massive/1, win_massive_client/1,
mix_up_ports/1, otp_5112/1, otp_5119/1, otp_6224/1,
@@ -111,8 +112,8 @@ all() ->
bad_packet, bad_port_messages, {group, options},
{group, multiple_packets}, parallell, dying_port,
port_program_with_path, open_input_file_port,
- open_output_file_port, name1, env, bad_env, cd,
- exit_status, iter_max_ports, t_exit, {group, tps}, line,
+ open_output_file_port, name1, env, huge_env, bad_env, cd,
+ exit_status, iter_max_ports, count_fds, t_exit, {group, tps}, line,
stderr_to_stdout, otp_3906, otp_4389, win_massive,
mix_up_ports, otp_5112, otp_5119,
exit_status_multi_scheduling_block, ports, spawn_driver,
@@ -385,27 +386,33 @@ input_only(Config) when is_list(Config) ->
output_only(Config) when is_list(Config) ->
Dog = test_server:timetrap(test_server:seconds(100)),
Dir = ?config(priv_dir, Config),
+
+ %% First we test that the port program gets the data
Filename = filename:join(Dir, "output_only_stream"),
- output_and_verify(Config, Filename, "-h0",
- random_packet(35777, "echo")),
+ Data = random_packet(35777, "echo"),
+ output_and_verify(Config, ["-h0 -o", Filename], Data),
+ Wait_time = 500,
+ test_server:sleep(Wait_time),
+ {ok, Written} = file:read_file(Filename),
+ Data = binary_to_list(Written),
+
+ %% Then we test that any writes to stdout from
+ %% the port program is not sent to erlang
+ output_and_verify(Config, ["-h0"], Data),
+
test_server:timetrap_cancel(Dog),
ok.
-output_and_verify(Config, Filename, Options, Data) ->
+output_and_verify(Config, Options, Data) ->
PortTest = port_test(Config),
- Command = lists:concat([PortTest, " ",
- Options, " -o", Filename]),
+ Command = lists:concat([PortTest, " " | Options]),
Port = open_port({spawn, Command}, [out]),
Port ! {self(), {command, Data}},
Port ! {self(), close},
receive
- {Port, closed} -> ok
- end,
- Wait_time = 500,
- test_server:sleep(Wait_time),
- {ok, Written} = file:read_file(Filename),
- Data = binary_to_list(Written),
- ok.
+ {Port, closed} -> ok;
+ Msg -> ct:fail({received_unexpected_message, Msg})
+ end.
%% Test that receiving several packages written in the same
%% write operation works.
@@ -610,6 +617,38 @@ open_output_file_port(Config) when is_list(Config) ->
test_server:timetrap_cancel(Dog),
ok.
+%% Tests that all appropriate fd's have been closed in the port program
+count_fds(suite) -> [];
+count_fds(Config) when is_list(Config) ->
+ case os:type() of
+ {unix, _} ->
+ PrivDir = proplists:get_value(priv_dir, Config),
+ Filename = filename:join(PrivDir, "my_fd_counter"),
+
+ RunTest = fun(PortOpts) ->
+ PortTest = port_test(Config),
+ Command = lists:concat([PortTest, " -n -f -o", Filename]),
+ Port = open_port({spawn, Command}, PortOpts),
+ Port ! {self(), close},
+ receive
+ {Port, closed} -> ok
+ end,
+ test_server:sleep(500),
+ {ok, Written} = file:read_file(Filename),
+ Written
+ end,
+ <<4:32/native>> = RunTest([out, nouse_stdio]),
+ <<4:32/native>> = RunTest([in, nouse_stdio]),
+ <<5:32/native>> = RunTest([in, out, nouse_stdio]),
+ <<3:32/native>> = RunTest([out, use_stdio]),
+ <<3:32/native>> = RunTest([in, use_stdio]),
+ <<3:32/native>> = RunTest([in, out, use_stdio]),
+ <<3:32/native>> = RunTest([in, out, use_stdio, stderr_to_stdout]),
+ <<3:32/native>> = RunTest([out, use_stdio, stderr_to_stdout]);
+ _ ->
+ {skip, "Skipped on windows"}
+ end.
+
%%
%% Open as many ports as possible. Do this several times and check
%% that we get the same number of ports every time.
@@ -680,7 +719,16 @@ close_ports([]) ->
ok.
open_ports(Name, Settings) ->
- test_server:sleep(5),
+ case os:type() of
+ {unix, freebsd} ->
+ %% FreeBsd has issues with sendmsg/recvmsg in fork
+ %% implementation and we therefor have to spawn
+ %% slower to make sure that we always hit the same
+ %% make roof.
+ test_server:sleep(10);
+ _ ->
+ test_server:sleep(5)
+ end,
case catch open_port(Name, Settings) of
P when is_port(P) ->
[P| open_ports(Name, Settings)];
@@ -923,6 +971,40 @@ try_bad_env(Env) ->
error:badarg -> ok
end.
+%% Test that we can handle a very very large environment gracefully.
+huge_env(Config) when is_list(Config) ->
+ Vars = case os:type() of
+ {win32,_} -> 500;
+ _ ->
+ %% We create a huge environment,
+ %% 20000 variables is about 25MB
+ %% which seems to be the limit on Linux.
+ 20000
+ end,
+ Env = [{[$a + I div (25*25*25*25) rem 25,
+ $a + I div (25*25*25) rem 25,
+ $a + I div (25*25) rem 25,
+ $a+I div 25 rem 25, $a+I rem 25],
+ lists:duplicate(100,$a+I rem 25)}
+ || I <- lists:seq(1,Vars)],
+ try erlang:open_port({spawn,"ls"},[exit_status, {env, Env}]) of
+ P ->
+ receive
+ {P, {exit_status,N}} = M ->
+ %% We test that the exit status is an integer, this means
+ %% that the child program has started. If we get an atom
+ %% something went wrong in the driver which is not ok.
+ ct:log("Got ~p",[M]),
+ true = is_integer(N)
+ end
+ catch E:R ->
+ %% Have to catch the error here, as printing the stackdump
+ %% in the ct log is way to heavy for some test machines.
+ ct:fail("Open port failed ~p:~p",[E,R])
+ end.
+
+
+
%% 'cd' option
%% (Can perhaps be made smaller by calling the other utility functions
%% in this module.)
@@ -1228,13 +1310,15 @@ otp_4389(Config) when is_list(Config) ->
{P,{exit_status,_}} ->
TCR ! {self(),ok};
{'EXIT',_,{R2,_}} when R2 == emfile;
- R2 == eagain ->
+ R2 == eagain;
+ R2 == enomem ->
TCR ! {self(),ok};
Err2 ->
TCR ! {self(),{msg,Err2}}
end;
{'EXIT',{R1,_}} when R1 == emfile;
- R1 == eagain ->
+ R1 == eagain;
+ R1 == enomem ->
TCR ! {self(),ok};
Err1 ->
TCR ! {self(), {open_port,Err1}}
@@ -1840,10 +1924,12 @@ exit_status_msb_test(Config, SleepSecs) when is_list(Config) ->
{Prt,
erlang:system_info(scheduler_id)};
{'EXIT', {Err, _}} when Err == eagain;
- Err == emfile ->
+ Err == emfile;
+ Err == enomem ->
noop;
{'EXIT', Err} when Err == eagain;
- Err == emfile ->
+ Err == emfile;
+ Err == enomem ->
noop;
Error ->
?t:fail(Error)
@@ -2183,15 +2269,14 @@ random_char(Chars) ->
lists:nth(uniform(length(Chars)), Chars).
uniform(N) ->
- case get(random_seed) of
- undefined ->
- {X, Y, Z} = Seed = time(),
- io:format("Random seed = ~p\n",[Seed]),
- random:seed(X, Y, Z);
+ case rand:export_seed() of
+ undefined ->
+ rand:seed(exsplus),
+ io:format("Random seed = ~p\n", [rand:export_seed()]);
_ ->
ok
end,
- random:uniform(N).
+ rand:uniform(N).
fun_spawn(Fun) ->
fun_spawn(Fun, []).
@@ -2331,7 +2416,7 @@ close_deaf_port(Config) when is_list(Config) ->
close_deaf_port_1(200, _) ->
ok;
close_deaf_port_1(N, Cmd) ->
- Timeout = integer_to_list(random:uniform(5*1000)),
+ Timeout = integer_to_list(rand:uniform(5*1000)),
try open_port({spawn_executable,Cmd},[{args,[Timeout]}]) of
Port ->
erlang:port_command(Port,"Hello, can you hear me!?!?"),
@@ -2372,7 +2457,7 @@ port_setget_data(Config) when is_list(Config) ->
ok.
port_setget_data_hammer(Port, HeapData, IsSet0, N) ->
- Rand = random:uniform(3),
+ Rand = rand:uniform(3),
IsSet1 = try case Rand of
1 -> true = erlang:port_set_data(Port, atom), true;
2 -> true = erlang:port_set_data(Port, HeapData), true;
diff --git a/erts/emulator/test/port_SUITE_data/port_test.c b/erts/emulator/test/port_SUITE_data/port_test.c
index 7abefab2e3..cc3ebdf0f8 100644
--- a/erts/emulator/test/port_SUITE_data/port_test.c
+++ b/erts/emulator/test/port_SUITE_data/port_test.c
@@ -13,6 +13,7 @@
#ifndef __WIN32__
#include <unistd.h>
+#include <limits.h>
#include <sys/time.h>
@@ -48,6 +49,7 @@ typedef struct {
* after reading the header for a packet
* before reading the rest.
*/
+ int fd_count; /* Count the number of open fds */
int break_mode; /* If set, this program will close standard
* input, which should case broken pipe
* error in the writer.
@@ -107,7 +109,7 @@ MAIN(argc, argv)
int argc;
char *argv[];
{
- int ret;
+ int ret, fd_count;
if((port_data = (PORT_TEST_DATA *) malloc(sizeof(PORT_TEST_DATA))) == NULL) {
fprintf(stderr, "Couldn't malloc for port_data");
exit(1);
@@ -115,6 +117,7 @@ char *argv[];
port_data->header_size = 0;
port_data->io_buf_size = 0;
port_data->delay_mode = 0;
+ port_data->fd_count = 0;
port_data->break_mode = 0;
port_data->quit_mode = 0;
port_data->slow_writes = 0;
@@ -144,6 +147,9 @@ char *argv[];
case 'e':
port_data->fd_to_erl = 2;
break;
+ case 'f':
+ port_data->fd_count = 1;
+ break;
case 'h': /* Header size for packets. */
switch (argv[1][2]) {
case '0': port_data->header_size = 0; break;
@@ -189,18 +195,31 @@ char *argv[];
/* XXX Add error printout here */
}
+ if (port_data->fd_count) {
+#ifdef __WIN32__
+ DWORD handles;
+ GetProcessHandleCount(GetCurrentProcess(), &handles);
+ fd_count = handles;
+#else
+ int i;
+ for (i = 0, fd_count = 0; i < 1024; i++)
+ if (fcntl(i, F_GETFD) >= 0) {
+ fd_count++;
+ }
+#endif
+ }
+
+ if (port_data->output_file)
+ replace_stdout(port_data->output_file);
+
+ if (port_data->fd_count)
+ reply(&fd_count, sizeof(fd_count));
+
if (port_data->no_packet_loop){
free(port_data);
exit(0);
}
- /*
- * If an output file was given, let it replace standard output.
- */
-
- if (port_data->output_file)
- replace_stdout(port_data->output_file);
-
ret = packet_loop();
if(port_data->io_buf_size > 0)
free(port_data->io_buf);
diff --git a/erts/emulator/test/port_bif_SUITE.erl b/erts/emulator/test/port_bif_SUITE.erl
index b65a22a528..981899b167 100644
--- a/erts/emulator/test/port_bif_SUITE.erl
+++ b/erts/emulator/test/port_bif_SUITE.erl
@@ -485,14 +485,7 @@ random_char(Chars) ->
lists:nth(uniform(length(Chars)), Chars).
uniform(N) ->
- case get(random_seed) of
- undefined ->
- {X, Y, Z} = time(),
- random:seed(X, Y, Z);
- _ ->
- ok
- end,
- random:uniform(N).
+ rand:uniform(N).
unaligned_sub_bin(Bin0) ->
Bin1 = <<0:3,Bin0/binary,31:5>>,
diff --git a/erts/emulator/test/random_iolist.erl b/erts/emulator/test/random_iolist.erl
index 9a0f034e72..6da7da04de 100644
--- a/erts/emulator/test/random_iolist.erl
+++ b/erts/emulator/test/random_iolist.erl
@@ -36,7 +36,7 @@ run2(Iter,Fun1,Fun2) ->
compare2(Iter,Fun1,Fun2).
random_byte() ->
- random:uniform(256) - 1.
+ rand:uniform(256) - 1.
random_list(0,Acc) ->
Acc;
@@ -45,7 +45,7 @@ random_list(N,Acc) ->
random_binary(N) ->
B = list_to_binary(random_list(N,[])),
- case {random:uniform(2),size(B)} of
+ case {rand:uniform(2),size(B)} of
{2,M} when M > 1 ->
S = M-1,
<<_:3,C:S/binary,_:5>> = B,
@@ -57,7 +57,7 @@ random_list(N) ->
random_list(N,[]).
front() ->
- case random:uniform(10) of
+ case rand:uniform(10) of
10 ->
false;
_ ->
@@ -65,7 +65,7 @@ front() ->
end.
any_type() ->
- case random:uniform(10) of
+ case rand:uniform(10) of
1 ->
list;
2 ->
@@ -77,7 +77,7 @@ any_type() ->
end.
tail_type() ->
- case random:uniform(5) of
+ case rand:uniform(5) of
1 ->
list;
2 ->
@@ -90,9 +90,9 @@ random_length(N) ->
UpperLimit = 255,
case N of
M when M > UpperLimit ->
- random:uniform(UpperLimit+1) - 1;
+ rand:uniform(UpperLimit+1) - 1;
_ ->
- random:uniform(N+1) - 1
+ rand:uniform(N+1) - 1
end.
random_iolist(0,Acc) ->
@@ -139,7 +139,7 @@ random_iolist(N) ->
standard_seed() ->
- random:seed(1201,855653,380975).
+ rand:seed(exsplus, {1201,855653,380975}).
do_comp(List,F1,F2) ->
X = F1(List),
diff --git a/erts/emulator/test/save_calls_SUITE.erl b/erts/emulator/test/save_calls_SUITE.erl
index 544d841f16..810bc07eed 100644
--- a/erts/emulator/test/save_calls_SUITE.erl
+++ b/erts/emulator/test/save_calls_SUITE.erl
@@ -189,7 +189,7 @@ is_local_function(_) ->
% Number crunching for reds test.
carmichaels_below(N) ->
- random:seed(3172,9814,20125),
+ rand:seed(exsplus, {3172,9814,20125}),
carmichaels_below(1,N).
carmichaels_below(N,N2) when N >= N2 ->
@@ -219,7 +219,7 @@ expmod(Base,Exp,Mod) ->
(Base * expmod(Base,Exp - 1,Mod)) rem Mod.
uniform(N) ->
- random:uniform(N-1).
+ rand:uniform(N-1).
fermat(N) ->
R = uniform(N),
diff --git a/erts/emulator/test/system_profile_SUITE.erl b/erts/emulator/test/system_profile_SUITE.erl
index e4b6511d1f..0a0784337f 100644
--- a/erts/emulator/test/system_profile_SUITE.erl
+++ b/erts/emulator/test/system_profile_SUITE.erl
@@ -448,7 +448,7 @@ run_load(N, Pids) ->
run_load(N - 1, [Pid | Pids]).
list_load() ->
- ok = case math:sin(random:uniform(32451)) of
+ ok = case math:sin(rand:uniform(32451)) of
A when is_float(A) -> ok;
_ -> ok
end,
diff --git a/erts/emulator/test/time_SUITE.erl b/erts/emulator/test/time_SUITE.erl
index 33076c7461..3bd28a6d20 100644
--- a/erts/emulator/test/time_SUITE.erl
+++ b/erts/emulator/test/time_SUITE.erl
@@ -69,7 +69,7 @@
init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) ->
[{testcase, Func}|Config].
-end_per_testcase(_Func, Config) ->
+end_per_testcase(_Func, _Config) ->
ok.
suite() -> [{ct_hooks,[ts_install_cth]}].
@@ -742,25 +742,21 @@ chk_strc(Res0, Res1) ->
ok.
chk_random_values(FR, TR) ->
-% case (FR rem TR == 0) orelse (TR rem FR == 0) of
-% true ->
- io:format("rand values ~p -> ~p~n", [FR, TR]),
- random:seed(268438039, 268440479, 268439161),
- Values = lists:map(fun (_) -> random:uniform(1 bsl 65) - (1 bsl 64) end,
- lists:seq(1, 100000)),
- CheckFun = fun (V) ->
- CV = erlang:convert_time_unit(V, FR, TR),
- case {(FR*CV) div TR =< V,
- (FR*(CV+1)) div TR >= V} of
- {true, true} ->
- ok;
- Failure ->
- ?t:fail({Failure, CV, V, FR, TR})
- end
- end,
- lists:foreach(CheckFun, Values).%;
-% false -> ok
-% end.
+ io:format("rand values ~p -> ~p~n", [FR, TR]),
+ rand:seed(exsplus, {268438039,268440479,268439161}),
+ Values = lists:map(fun (_) -> rand:uniform(1 bsl 65) - (1 bsl 64) end,
+ lists:seq(1, 100000)),
+ CheckFun = fun (V) ->
+ CV = erlang:convert_time_unit(V, FR, TR),
+ case {(FR*CV) div TR =< V,
+ (FR*(CV+1)) div TR >= V} of
+ {true, true} ->
+ ok;
+ Failure ->
+ ?t:fail({Failure, CV, V, FR, TR})
+ end
+ end,
+ lists:foreach(CheckFun, Values).
chk_values_per_value(_FromRes, _ToRes,
diff --git a/erts/emulator/test/trace_SUITE.erl b/erts/emulator/test/trace_SUITE.erl
index 6eae182e45..00b90e3c3d 100644
--- a/erts/emulator/test/trace_SUITE.erl
+++ b/erts/emulator/test/trace_SUITE.erl
@@ -933,7 +933,7 @@ suspend_exit(suite) ->
[];
suspend_exit(Config) when is_list(Config) ->
?line Dog = test_server:timetrap(test_server:minutes(2)),
- ?line random:seed(4711,17,4711),
+ rand:seed(exsplus, {4711,17,4711}),
?line do_suspend_exit(5000),
?line test_server:timetrap_cancel(Dog),
?line ok.
@@ -941,7 +941,7 @@ suspend_exit(Config) when is_list(Config) ->
do_suspend_exit(0) ->
?line ok;
do_suspend_exit(N) ->
- ?line Work = random:uniform(50),
+ Work = rand:uniform(50),
?line Parent = self(),
?line {Suspendee, Mon2}
= spawn_monitor(fun () ->
diff --git a/erts/emulator/test/z_SUITE.erl b/erts/emulator/test/z_SUITE.erl
index f4d9030255..abc353fb01 100644
--- a/erts/emulator/test/z_SUITE.erl
+++ b/erts/emulator/test/z_SUITE.erl
@@ -249,6 +249,7 @@ pollset_size(Config) when is_list(Config) ->
?line io:format("Initial: ~p~nFinal: ~p~n", [InitChkIo, FinChkIo]),
?line InitPollsetSize = lists:keysearch(total_poll_set_size, 1, InitChkIo),
?line FinPollsetSize = lists:keysearch(total_poll_set_size, 1, FinChkIo),
+ HasGethost = case has_gethost() of true -> 1; _ -> 0 end,
?line case InitPollsetSize =:= FinPollsetSize of
true ->
case InitPollsetSize of
@@ -269,7 +270,7 @@ pollset_size(Config) when is_list(Config) ->
= InitPollsetSize,
?line {value, {total_poll_set_size, FinSize}}
= FinPollsetSize,
- ?line true = FinSize < InitSize,
+ ?line true = FinSize < (InitSize + HasGethost),
?line true = 2 =< FinSize,
?line {comment,
"Start pollset size: "
@@ -289,16 +290,39 @@ check_io_debug(Config) when is_list(Config) ->
end.
check_io_debug_test() ->
- ?line erlang:display(get_check_io_info()),
- ?line erts_debug:set_internal_state(available_internal_state, true),
- ?line {NoErrorFds, NoUsedFds, NoDrvSelStructs, NoDrvEvStructs}
+ erlang:display(get_check_io_info()),
+ erts_debug:set_internal_state(available_internal_state, true),
+ {NoErrorFds, NoUsedFds, NoDrvSelStructs, NoDrvEvStructs} = CheckIoDebug
= erts_debug:get_internal_state(check_io_debug),
- ?line erts_debug:set_internal_state(available_internal_state, false),
- ?line 0 = NoErrorFds,
- ?line NoUsedFds = NoDrvSelStructs,
+ erts_debug:set_internal_state(available_internal_state, false),
+ HasGetHost = has_gethost(),
+ ct:log("check_io_debug: ~p~n"
+ "HasGetHost: ~p",[CheckIoDebug, HasGetHost]),
+ 0 = NoErrorFds,
+ if
+ NoUsedFds == NoDrvSelStructs ->
+ ok;
+ HasGetHost andalso (NoUsedFds == (NoDrvSelStructs - 1)) ->
+ %% If the inet_gethost port is alive, we may have
+ %% one extra used fd that is not selected on.
+ %% This happens when the initial setup of the
+ %% port returns an EAGAIN
+ ok
+ end,
?line 0 = NoDrvEvStructs,
?line ok.
+has_gethost() ->
+ has_gethost(erlang:ports()).
+has_gethost([P|T]) ->
+ case erlang:port_info(P, name) of
+ {name,"inet_gethost"++_} ->
+ true;
+ _ ->
+ has_gethost(T)
+ end;
+has_gethost([]) ->
+ false.
%%
diff --git a/erts/etc/common/ct_run.c b/erts/etc/common/ct_run.c
index 11cec26264..548514ee6c 100644
--- a/erts/etc/common/ct_run.c
+++ b/erts/etc/common/ct_run.c
@@ -83,6 +83,7 @@ static int eargc; /* Number of arguments in eargv. */
static void error(char* format, ...);
static char* emalloc(size_t size);
static char* strsave(char* string);
+static void push_words(char* src);
static int run_erlang(char* name, char** argv);
static char* get_default_emulator(char* progname);
#ifdef __WIN32__
@@ -151,8 +152,6 @@ int main(int argc, char** argv)
argv0 = argv;
emulator = get_default_emulator(argv[0]);
- if (strlen(emulator) >= MAXPATHLEN)
- error("Emulator path length is too large");
/*
* Allocate the argv vector to be used for arguments to Erlang.
@@ -164,7 +163,7 @@ int main(int argc, char** argv)
eargv_base = (char **) emalloc(eargv_size*sizeof(char*));
eargv = eargv_base;
eargc = 0;
- PUSH(strsave(emulator));
+ push_words(emulator);
eargc_base = eargc;
eargv = eargv + eargv_size/2;
eargc = 0;
@@ -295,6 +294,26 @@ int main(int argc, char** argv)
return run_erlang(eargv[0], eargv);
}
+static void
+push_words(char* src)
+{
+ char sbuf[MAXPATHLEN];
+ char* dst;
+
+ dst = sbuf;
+ while ((*dst++ = *src++) != '\0') {
+ if (isspace((int)*src)) {
+ *dst = '\0';
+ PUSH(strsave(sbuf));
+ dst = sbuf;
+ do {
+ src++;
+ } while (isspace((int)*src));
+ }
+ }
+ if (sbuf[0])
+ PUSH(strsave(sbuf));
+}
#ifdef __WIN32__
wchar_t *make_commandline(char **argv)
{
diff --git a/erts/etc/common/dialyzer.c b/erts/etc/common/dialyzer.c
index cac1464bf6..c45626606c 100644
--- a/erts/etc/common/dialyzer.c
+++ b/erts/etc/common/dialyzer.c
@@ -65,6 +65,7 @@ static int eargc; /* Number of arguments in eargv. */
static void error(char* format, ...);
static char* emalloc(size_t size);
static char* strsave(char* string);
+static void push_words(char* src);
static int run_erlang(char* name, char** argv);
static char* get_default_emulator(char* progname);
#ifdef __WIN32__
@@ -188,7 +189,7 @@ int main(int argc, char** argv)
eargv_base = (char **) emalloc(eargv_size*sizeof(char*));
eargv = eargv_base;
eargc = 0;
- PUSH(strsave(emulator));
+ push_words(emulator);
eargc_base = eargc;
eargv = eargv + eargv_size/2;
eargc = 0;
@@ -268,6 +269,27 @@ int main(int argc, char** argv)
return run_erlang(eargv[0], eargv);
}
+static void
+push_words(char* src)
+{
+ char sbuf[MAXPATHLEN];
+ char* dst;
+
+ dst = sbuf;
+ while ((*dst++ = *src++) != '\0') {
+ if (isspace((int)*src)) {
+ *dst = '\0';
+ PUSH(strsave(sbuf));
+ dst = sbuf;
+ do {
+ src++;
+ } while (isspace((int)*src));
+ }
+ }
+ if (sbuf[0])
+ PUSH(strsave(sbuf));
+}
+
#ifdef __WIN32__
wchar_t *make_commandline(char **argv)
{
diff --git a/erts/etc/common/erlc.c b/erts/etc/common/erlc.c
index 049afc526a..f9d909e01c 100644
--- a/erts/etc/common/erlc.c
+++ b/erts/etc/common/erlc.c
@@ -200,7 +200,7 @@ int main(int argc, char** argv)
eargv_base = (char **) emalloc(eargv_size*sizeof(char*));
eargv = eargv_base;
eargc = 0;
- PUSH(strsave(emulator));
+ push_words(emulator);
eargc_base = eargc;
eargv = eargv + eargv_size/2;
eargc = 0;
@@ -330,6 +330,26 @@ process_opt(int* pArgc, char*** pArgv, int offset)
return argv[1];
}
+static void
+push_words(char* src)
+{
+ char sbuf[MAXPATHLEN];
+ char* dst;
+
+ dst = sbuf;
+ while ((*dst++ = *src++) != '\0') {
+ if (isspace((int)*src)) {
+ *dst = '\0';
+ PUSH(strsave(sbuf));
+ dst = sbuf;
+ do {
+ src++;
+ } while (isspace((int)*src));
+ }
+ }
+ if (sbuf[0])
+ PUSH(strsave(sbuf));
+}
#ifdef __WIN32__
wchar_t *make_commandline(char **argv)
{
diff --git a/erts/etc/common/erlexec.c b/erts/etc/common/erlexec.c
index 7b0fe46a01..f21671e837 100644
--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -158,7 +158,7 @@ static char *plusr_val_switches[] = {
/* +x arguments with values */
static char *plusx_val_switches[] = {
- "ohmq",
+ "mqd",
NULL
};
diff --git a/erts/etc/common/escript.c b/erts/etc/common/escript.c
index a5c6d0d40b..7fd02ed436 100644
--- a/erts/etc/common/escript.c
+++ b/erts/etc/common/escript.c
@@ -74,6 +74,7 @@ static void error(char* format, ...);
static char* emalloc(size_t size);
static void efree(void *p);
static char* strsave(char* string);
+static void push_words(char* src);
static int run_erlang(char* name, char** argv);
static char* get_default_emulator(char* progname);
#ifdef __WIN32__
@@ -431,7 +432,7 @@ main(int argc, char** argv)
emulator = get_default_emulator(argv[0]);
}
- if (strlen(emulator) >= MAXPATHLEN)
+ if (strlen(emulator) >= PMAX)
error("Value of environment variable ESCRIPT_EMULATOR is too large");
/*
@@ -444,7 +445,7 @@ main(int argc, char** argv)
eargv_base = (char **) emalloc(eargv_size*sizeof(char*));
eargv = eargv_base;
eargc = 0;
- PUSH(strsave(emulator));
+ push_words(emulator);
eargc_base = eargc;
eargv = eargv + eargv_size/2;
eargc = 0;
@@ -553,6 +554,26 @@ main(int argc, char** argv)
return run_erlang(eargv[0], eargv);
}
+static void
+push_words(char* src)
+{
+ char sbuf[PMAX];
+ char* dst;
+
+ dst = sbuf;
+ while ((*dst++ = *src++) != '\0') {
+ if (isspace((int)*src)) {
+ *dst = '\0';
+ PUSH(strsave(sbuf));
+ dst = sbuf;
+ do {
+ src++;
+ } while (isspace((int)*src));
+ }
+ }
+ if (sbuf[0])
+ PUSH(strsave(sbuf));
+}
#ifdef __WIN32__
wchar_t *make_commandline(char **argv)
{
diff --git a/erts/etc/common/typer.c b/erts/etc/common/typer.c
index 7ff8aa76e2..0aa0996808 100644
--- a/erts/etc/common/typer.c
+++ b/erts/etc/common/typer.c
@@ -65,6 +65,7 @@ static int eargc; /* Number of arguments in eargv. */
static void error(char* format, ...);
static char* emalloc(size_t size);
static char* strsave(char* string);
+static void push_words(char* src);
static int run_erlang(char* name, char** argv);
static char* get_default_emulator(char* progname);
#ifdef __WIN32__
@@ -128,9 +129,6 @@ main(int argc, char** argv)
emulator = get_default_emulator(argv[0]);
- if (strlen(emulator) >= MAXPATHLEN)
- error("Emulator path length is too large");
-
/*
* Allocate the argv vector to be used for arguments to Erlang.
* Arrange for starting to pushing information in the middle of
@@ -141,7 +139,7 @@ main(int argc, char** argv)
eargv_base = (char **) emalloc(eargv_size*sizeof(char*));
eargv = eargv_base;
eargc = 0;
- PUSH(strsave(emulator));
+ push_words(emulator);
eargc_base = eargc;
eargv = eargv + eargv_size/2;
eargc = 0;
@@ -194,6 +192,26 @@ main(int argc, char** argv)
return run_erlang(eargv[0], eargv);
}
+static void
+push_words(char* src)
+{
+ char sbuf[MAXPATHLEN];
+ char* dst;
+
+ dst = sbuf;
+ while ((*dst++ = *src++) != '\0') {
+ if (isspace((int)*src)) {
+ *dst = '\0';
+ PUSH(strsave(sbuf));
+ dst = sbuf;
+ do {
+ src++;
+ } while (isspace((int)*src));
+ }
+ }
+ if (sbuf[0])
+ PUSH(strsave(sbuf));
+}
#ifdef __WIN32__
wchar_t *make_commandline(char **argv)
{
diff --git a/erts/preloaded/ebin/erl_prim_loader.beam b/erts/preloaded/ebin/erl_prim_loader.beam
index df12c6f8e0..6ee26b7575 100644
--- a/erts/preloaded/ebin/erl_prim_loader.beam
+++ b/erts/preloaded/ebin/erl_prim_loader.beam
Binary files differ
diff --git a/erts/preloaded/ebin/erlang.beam b/erts/preloaded/ebin/erlang.beam
index 4f35928db2..77f25653a3 100644
--- a/erts/preloaded/ebin/erlang.beam
+++ b/erts/preloaded/ebin/erlang.beam
Binary files differ
diff --git a/erts/preloaded/ebin/erts_internal.beam b/erts/preloaded/ebin/erts_internal.beam
index dc8c711e1a..4e1cb7f8a0 100644
--- a/erts/preloaded/ebin/erts_internal.beam
+++ b/erts/preloaded/ebin/erts_internal.beam
Binary files differ
diff --git a/erts/preloaded/ebin/init.beam b/erts/preloaded/ebin/init.beam
index 73dfb3d351..a44b022931 100644
--- a/erts/preloaded/ebin/init.beam
+++ b/erts/preloaded/ebin/init.beam
Binary files differ
diff --git a/erts/preloaded/ebin/otp_ring0.beam b/erts/preloaded/ebin/otp_ring0.beam
index 33c112f4de..328520844d 100644
--- a/erts/preloaded/ebin/otp_ring0.beam
+++ b/erts/preloaded/ebin/otp_ring0.beam
Binary files differ
diff --git a/erts/preloaded/ebin/prim_eval.beam b/erts/preloaded/ebin/prim_eval.beam
index ebca6e7eea..8d6c1927fd 100644
--- a/erts/preloaded/ebin/prim_eval.beam
+++ b/erts/preloaded/ebin/prim_eval.beam
Binary files differ
diff --git a/erts/preloaded/ebin/prim_file.beam b/erts/preloaded/ebin/prim_file.beam
index e8817d183e..1221c513db 100644
--- a/erts/preloaded/ebin/prim_file.beam
+++ b/erts/preloaded/ebin/prim_file.beam
Binary files differ
diff --git a/erts/preloaded/ebin/prim_inet.beam b/erts/preloaded/ebin/prim_inet.beam
index 357bcd3d9a..fa617f1f51 100644
--- a/erts/preloaded/ebin/prim_inet.beam
+++ b/erts/preloaded/ebin/prim_inet.beam
Binary files differ
diff --git a/erts/preloaded/ebin/prim_zip.beam b/erts/preloaded/ebin/prim_zip.beam
index 969239be98..83e1e49974 100644
--- a/erts/preloaded/ebin/prim_zip.beam
+++ b/erts/preloaded/ebin/prim_zip.beam
Binary files differ
diff --git a/erts/preloaded/ebin/zlib.beam b/erts/preloaded/ebin/zlib.beam
index 281f668f8c..8f654e3abf 100644
--- a/erts/preloaded/ebin/zlib.beam
+++ b/erts/preloaded/ebin/zlib.beam
Binary files differ
diff --git a/erts/preloaded/src/erl_prim_loader.erl b/erts/preloaded/src/erl_prim_loader.erl
index 9f6cba33bd..5f88029585 100644
--- a/erts/preloaded/src/erl_prim_loader.erl
+++ b/erts/preloaded/src/erl_prim_loader.erl
@@ -42,7 +42,7 @@
-include("inet_boot.hrl").
%% Public
--export([start/3, set_path/1, get_path/0, get_file/1, get_files/2,
+-export([start/0, set_path/1, get_path/0, get_file/1,
list_dir/1, read_file_info/1, read_link_info/1, get_cwd/0, get_cwd/1]).
%% Used by erl_boot_server
@@ -64,12 +64,10 @@
-record(state,
{loader :: 'efile' | 'inet',
hosts = [] :: [host()], % hosts list (to boot from)
- id, % not used any more?
data :: 'noport' | port(), % data port etc
- timeout :: timeout(), % idle timeout
+ timeout :: timeout(), % idle timeout
%% Number of timeouts before archives are released
n_timeouts :: non_neg_integer(),
- multi_get = false :: boolean(),
prim_state :: prim_state()}). % state for efile code loader
-define(IDLE_TIMEOUT, 60000). %% tear inet connection after 1 minutes
@@ -103,26 +101,13 @@ debug(#prim_state{debug = Deb}, Term) ->
%%% Interface Functions.
%%% --------------------------------------------------------
--spec start(Id, Loader, Hosts) ->
+-spec start() ->
{'ok', Pid} | {'error', What} when
- Id :: term(),
- Loader :: atom() | string(),
- Hosts :: Host | [Host],
- Host :: host(),
Pid :: pid(),
What :: term().
-start(Id, Pgm, Hosts) when is_atom(Hosts) ->
- start(Id, Pgm, [Hosts]);
-start(Id, Pgm0, Hosts) ->
- Pgm = if
- is_atom(Pgm0) ->
- atom_to_list(Pgm0);
- true ->
- Pgm0
- end,
+start() ->
Self = self(),
- Pid = spawn_link(fun() -> start_it(Pgm, Id, Self, Hosts) end),
- register(erl_prim_loader, Pid),
+ Pid = spawn_link(fun() -> start_it(Self) end),
receive
{Pid,ok} ->
{ok,Pid};
@@ -130,26 +115,40 @@ start(Id, Pgm0, Hosts) ->
{error,Reason}
end.
-%% Hosts must be a list of form ['1.2.3.4' ...]
-start_it("inet", Id, Pid, Hosts) ->
+start_it(Parent) ->
process_flag(trap_exit, true),
- ?dbg(inet, {Id,Pid,Hosts}),
+ register(erl_prim_loader, self()),
+ Loader = case init:get_argument(loader) of
+ {ok,[[Loader0]]} ->
+ Loader0;
+ error ->
+ "efile"
+ end,
+ case Loader of
+ "efile" -> start_efile(Parent);
+ "inet" -> start_inet(Parent)
+ end.
+
+%% Hosts must be a list of form ['1.2.3.4' ...]
+start_inet(Parent) ->
+ Hosts = case init:get_argument(hosts) of
+ {ok,[Hosts0]} -> Hosts0;
+ _ -> []
+ end,
AL = ipv4_list(Hosts),
?dbg(addresses, AL),
{ok,Tcp} = find_master(AL),
- init_ack(Pid),
+ init_ack(Parent),
PS = prim_init(),
State = #state {loader = inet,
hosts = AL,
- id = Id,
data = Tcp,
timeout = ?IDLE_TIMEOUT,
n_timeouts = ?N_TIMEOUTS,
prim_state = PS},
- loop(State, Pid, []);
+ loop(State, Parent, []).
-start_it("efile", Id, Pid, _Hosts) ->
- process_flag(trap_exit, true),
+start_efile(Parent) ->
{ok, Port} = prim_file:start(),
%% Check that we started in a valid directory.
case prim_file:get_cwd(Port) of
@@ -160,20 +159,14 @@ start_it("efile", Id, Pid, _Hosts) ->
erlang:display(Report),
exit({error, invalid_current_directory});
_ ->
- init_ack(Pid)
+ init_ack(Parent)
end,
- MultiGet = case erlang:system_info(thread_pool_size) of
- 0 -> false;
- _ -> true
- end,
PS = prim_init(),
State = #state {loader = efile,
- id = Id,
data = Port,
timeout = infinity,
- multi_get = MultiGet,
prim_state = PS},
- loop(State, Pid, []).
+ loop(State, Parent, []).
init_ack(Pid) ->
Pid ! {self(),ok},
@@ -198,20 +191,6 @@ get_file(File) when is_atom(File) ->
get_file(File) ->
check_file_result(get_file, File, request({get_file,File})).
--spec get_files([{atom(), string()}],
- fun((atom(),binary(),string()) -> 'ok' | {'error', atom()})) ->
- 'ok' | {'error', atom()}.
-get_files(ModFiles, Fun) ->
- case request({get_files,{ModFiles,Fun}}) of
- E = {error,_M} ->
- E;
- {error,Reason,M} ->
- check_file_result(get_files, M, {error,Reason}),
- {error,M};
- ok ->
- ok
- end.
-
-spec list_dir(Dir) -> {'ok', Filenames} | 'error' when
Dir :: string(),
Filenames :: [Filename :: string()].
@@ -310,76 +289,59 @@ check_file_result(_, _, Other) ->
%%% The main loop.
%%% --------------------------------------------------------
-loop(State, Parent, Paths) ->
+loop(St0, Parent, Paths) ->
receive
+ {Pid,{set_path,NewPaths}} when is_pid(Pid) ->
+ Pid ! {self(),ok},
+ loop(St0, Parent, to_strs(NewPaths));
{Pid,Req} when is_pid(Pid) ->
- %% erlang:display(Req),
- {Resp,State2,Paths2} =
- case Req of
- {set_path,NewPaths} ->
- {ok,State,to_strs(NewPaths)};
- {get_path,_} ->
- {{ok,Paths},State,Paths};
- {get_file,File} ->
- {Res,State1} = handle_get_file(State, Paths, File),
- {Res,State1,Paths};
- {get_files,{ModFiles,Fun}} ->
- {Res,State1} = handle_get_files(State, ModFiles, Paths, Fun),
- {Res,State1,Paths};
- {list_dir,Dir} ->
- {Res,State1} = handle_list_dir(State, Dir),
- {Res,State1,Paths};
- {read_file_info,File} ->
- {Res,State1} = handle_read_file_info(State, File),
- {Res,State1,Paths};
- {read_link_info,File} ->
- {Res,State1} = handle_read_link_info(State, File),
- {Res,State1,Paths};
- {get_cwd,[]} ->
- {Res,State1} = handle_get_cwd(State, []),
- {Res,State1,Paths};
- {get_cwd,[_]=Args} ->
- {Res,State1} = handle_get_cwd(State, Args),
- {Res,State1,Paths};
- {set_primary_archive,File,ArchiveBin,FileInfo,ParserFun} ->
- {Res,State1} =
- handle_set_primary_archive(State, File,
- ArchiveBin, FileInfo,
- ParserFun),
- {Res,State1,Paths};
- release_archives ->
- {Res,State1} = handle_release_archives(State),
- {Res,State1,Paths};
- _Other ->
- {ignore,State,Paths}
- end,
- if Resp =:= ignore -> ok;
- true -> Pid ! {self(),Resp}, ok
- end,
- if
- is_record(State2, state) ->
- loop(State2, Parent, Paths2);
- true ->
- exit({bad_state, Req, State2})
+ case handle_request(Req, Paths, St0) of
+ ignore ->
+ ok;
+ {Resp,#state{}=St1} ->
+ Pid ! {self(),Resp},
+ loop(St1, Parent, Paths);
+ {_,State2,_} ->
+ exit({bad_state,Req,State2})
end;
{'EXIT',Parent,W} ->
- _State1 = handle_stop(State),
+ _ = handle_stop(St0),
exit(W);
{'EXIT',P,W} ->
- State1 = handle_exit(State, P, W),
- loop(State1, Parent, Paths);
+ St1 = handle_exit(St0, P, W),
+ loop(St1, Parent, Paths);
_Message ->
- loop(State, Parent, Paths)
- after State#state.timeout ->
- State1 = handle_timeout(State, Parent),
- loop(State1, Parent, Paths)
+ loop(St0, Parent, Paths)
+ after St0#state.timeout ->
+ St1 = handle_timeout(St0, Parent),
+ loop(St1, Parent, Paths)
+ end.
+
+handle_request(Req, Paths, St0) ->
+ case Req of
+ {get_path,_} ->
+ {{ok,Paths},St0};
+ {get_file,File} ->
+ handle_get_file(St0, Paths, File);
+ {list_dir,Dir} ->
+ handle_list_dir(St0, Dir);
+ {read_file_info,File} ->
+ handle_read_file_info(St0, File);
+ {read_link_info,File} ->
+ handle_read_link_info(St0, File);
+ {get_cwd,[]} ->
+ handle_get_cwd(St0, []);
+ {get_cwd,[_]=Args} ->
+ handle_get_cwd(St0, Args);
+ {set_primary_archive,File,ArchiveBin,FileInfo,ParserFun} ->
+ handle_set_primary_archive(St0, File, ArchiveBin,
+ FileInfo, ParserFun);
+ release_archives ->
+ handle_release_archives(St0);
+ _ ->
+ ignore
end.
-handle_get_files(State = #state{multi_get = true}, ModFiles, Paths, Fun) ->
- ?SAFE2(efile_multi_get_file_from_port(State, ModFiles, Paths, Fun), State);
-handle_get_files(State, _ModFiles, _Paths, _Fun) -> % no multi get
- {{error,no_multi_get},State}.
-
handle_get_file(State = #state{loader = efile}, Paths, File) ->
?SAFE2(efile_get_file_from_port(State, File, Paths), State);
handle_get_file(State = #state{loader = inet}, Paths, File) ->
@@ -430,53 +392,6 @@ handle_timeout(State = #state{loader = inet}, Parent) ->
%%% Functions which handle efile as prim_loader (default).
%%% --------------------------------------------------------
-%%% Reading many files in parallel is an optimization.
-%%% See also comment in init.erl.
-
-%% -> {ok,State} | {{error,Module},State} | {{error,Reason,Module},State}
-efile_multi_get_file_from_port(State, ModFiles, Paths, Fun) ->
- Ref = make_ref(),
- %% More than 200 processes is no gain.
- Max = erlang:min(200, erlang:system_info(thread_pool_size)),
- efile_multi_get_file_from_port2(ModFiles, 0, Max, State, Paths, Fun, Ref, ok).
-
-efile_multi_get_file_from_port2([MF | MFs], Out, Max, State, Paths, Fun, Ref, Ret) when Out < Max ->
- Self = self(),
- _Pid = spawn(fun() -> efile_par_get_file(Ref, State, MF, Paths, Self, Fun) end),
- efile_multi_get_file_from_port2(MFs, Out+1, Max, State, Paths, Fun, Ref, Ret);
-efile_multi_get_file_from_port2(MFs, Out, Max, _State, Paths, Fun, Ref, Ret) when Out > 0 ->
- receive
- {Ref, ok, State1} ->
- efile_multi_get_file_from_port2(MFs, Out-1, Max, State1, Paths, Fun, Ref, Ret);
- {Ref, {error,_Mod} = Error, State1} ->
- efile_multi_get_file_from_port2(MFs, Out-1, Max, State1, Paths, Fun, Ref, Error);
- {Ref, MF, {error,emfile,State1}} ->
- %% Max can take negative values. Out cannot.
- efile_multi_get_file_from_port2([MF | MFs], Out-1, Max-1, State1, Paths, Fun, Ref, Ret);
- {Ref, {M,_F}, {error,Error,State1}} ->
- efile_multi_get_file_from_port2(MFs, Out-1, 0, State1, Paths, Fun, Ref, {error,Error,M})
- end;
-efile_multi_get_file_from_port2(_MFs, 0, _Max, State, _Paths, _Fun, _Ref, Ret) ->
- {Ret,State}.
-
-efile_par_get_file(Ref, State, {Mod,File} = MF, Paths, Pid, Fun) ->
- %% One port for each file read in "parallel":
- case prim_file:start() of
- {ok, Port} ->
- Port0 = State#state.data,
- State1 = State#state{data = Port},
- R = case efile_get_file_from_port(State1, File, Paths) of
- {{error,Reason},State2} ->
- {Ref,MF,{error,Reason,State2}};
- {{ok,BinFile,Full},State2} ->
- %% Fun(...) -> ok | {error,Mod}
- {Ref,Fun(Mod, BinFile, Full),State2#state{data=Port0}}
- end,
- prim_file:close(Port),
- Pid ! R;
- {error, Error} ->
- Pid ! {Ref,MF,{error,Error,State}}
- end.
%% -> {{ok,BinFile,File},State} | {{error,Reason},State}
efile_get_file_from_port(State, File, Paths) ->
@@ -1287,70 +1202,62 @@ path_join([Path],Acc) ->
path_join([Path|Paths],Acc) ->
path_join(Paths,"/" ++ reverse(Path) ++ Acc).
-name_split(ArchiveFile, File0) ->
- File = absname(File0),
- do_name_split(ArchiveFile, File).
-
-do_name_split(undefined, File) ->
+name_split(undefined, File) ->
%% Ignore primary archive
- case string_split(File, init:archive_extension(), []) of
+ RevExt = reverse(init:archive_extension()),
+ case archive_split(File, RevExt, []) of
no_split ->
- %% Plain file
{file, File};
- {split, _RevArchiveBase, RevArchiveFile, []} ->
- %% Top dir in archive
- ArchiveFile = reverse(RevArchiveFile),
- {archive, ArchiveFile, []};
- {split, _RevArchiveBase, RevArchiveFile, [$/ | FileInArchive]} ->
- %% File in archive
- ArchiveFile = reverse(RevArchiveFile),
- {archive, ArchiveFile, FileInArchive};
- {split, _RevArchiveBase, _RevArchiveFile, _FileInArchive} ->
- %% False match. Assume plain file
- {file, File}
+ Archive ->
+ Archive
end;
-do_name_split(ArchiveFile, File) ->
+name_split(ArchiveFile, File0) ->
%% Look first in primary archive
- case string_match(real_path(File), ArchiveFile, []) of
+ File = absname(File0),
+ case string_match(real_path(File), ArchiveFile) of
no_match ->
%% Archive or plain file
- do_name_split(undefined, File);
- {match, _RevPrimArchiveFile, FileInArchive} ->
+ name_split(undefined, File);
+ {match, FileInArchive} ->
%% Primary archive
{archive, ArchiveFile, FileInArchive}
end.
-string_match([Char | File], [Char | Archive], RevTop) ->
- string_match(File, Archive, [Char | RevTop]);
-string_match([] = File, [], RevTop) ->
- {match, RevTop, File};
-string_match([$/ | File], [], RevTop) ->
- {match, RevTop, File};
-string_match(_File, _Archive, _RevTop) ->
+string_match([Char | File], [Char | Archive]) ->
+ string_match(File, Archive);
+string_match([] = File, []) ->
+ {match, File};
+string_match([$/ | File], []) ->
+ {match, File};
+string_match(_File, _Archive) ->
no_match.
-string_split([Char | File], [Char | Ext] = FullExt, RevTop) ->
- RevTop2 = [Char | RevTop],
- string_split2(File, Ext, RevTop, RevTop2, File, FullExt, RevTop2);
-string_split([Char | File], Ext, RevTop) ->
- string_split(File, Ext, [Char | RevTop]);
-string_split([], _Ext, _RevTop) ->
- no_split.
-
-string_split2([Char | File], [Char | Ext], RevBase, RevTop, SaveFile, SaveExt, SaveTop) ->
- string_split2(File, Ext, RevBase, [Char | RevTop], SaveFile, SaveExt, SaveTop);
-string_split2(File, [], RevBase, RevTop, _SaveFile, _SaveExt, _SaveTop) ->
- {split, RevBase, RevTop, File};
-string_split2(_, _Ext, _RevBase, _RevTop, SaveFile, SaveExt, SaveTop) ->
- string_split(SaveFile, SaveExt, SaveTop).
+archive_split("/"++File, RevExt, Acc) ->
+ case is_prefix(RevExt, Acc) of
+ false ->
+ archive_split(File, RevExt, [$/|Acc]);
+ true ->
+ ArchiveFile = absname(reverse(Acc)),
+ {archive, ArchiveFile, File}
+ end;
+archive_split([H|T], RevExt, Acc) ->
+ archive_split(T, RevExt, [H|Acc]);
+archive_split([], RevExt, Acc) ->
+ case is_prefix(RevExt, Acc) of
+ false ->
+ no_split;
+ true ->
+ ArchiveFile = absname(reverse(Acc)),
+ {archive, ArchiveFile, []}
+ end.
+
+is_prefix([H|T1], [H|T2]) -> is_prefix(T1, T2);
+is_prefix([_|_], _) -> false;
+is_prefix([], _ ) -> true.
%% Parse list of ipv4 addresses
ipv4_list([H | T]) ->
- IPV = if is_atom(H) -> ipv4_address(atom_to_list(H));
- is_list(H) -> ipv4_address(H);
- true -> {error,einal}
- end,
- case IPV of
+ case ipv4_address(H) of
{ok,IP} -> [IP | ipv4_list(T)];
_ -> ipv4_list(T)
end;
@@ -1415,8 +1322,6 @@ absname_vr([Drive, $\: | NameRest], _) ->
%% Assumes normalized name
pathtype(Name) when is_list(Name) ->
case erlang:system_info(os_type) of
- {ose, _} ->
- unix_pathtype(Name);
{unix, _} ->
unix_pathtype(Name);
{win32, _} ->
diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl
index 0d5176019f..9517acd78e 100644
--- a/erts/preloaded/src/erlang.erl
+++ b/erts/preloaded/src/erlang.erl
@@ -2034,12 +2034,21 @@ nodes(_Arg) ->
| eof
| {parallelism, Boolean :: boolean()}
| hide.
-open_port(_PortName,_PortSettings) ->
- erlang:nif_error(undefined).
+open_port(PortName, PortSettings) ->
+ case case erts_internal:open_port(PortName, PortSettings) of
+ Ref when erlang:is_reference(Ref) -> receive {Ref, Res} -> Res end;
+ Res -> Res
+ end of
+ Port when erlang:is_port(Port) -> Port;
+ Error -> erlang:error(Error, [PortName, PortSettings])
+ end.
-type priority_level() ::
low | normal | high | max.
+-type message_queue_data() ::
+ off_heap | on_heap | mixed.
+
-spec process_flag(trap_exit, Boolean) -> OldBoolean when
Boolean :: boolean(),
OldBoolean :: boolean();
@@ -2052,9 +2061,9 @@ open_port(_PortName,_PortSettings) ->
(min_bin_vheap_size, MinBinVHeapSize) -> OldMinBinVHeapSize when
MinBinVHeapSize :: non_neg_integer(),
OldMinBinVHeapSize :: non_neg_integer();
- (off_heap_message_queue, OHMQ) -> OldOHMQ when
- OHMQ :: boolean(),
- OldOHMQ :: boolean();
+ (message_queue_data, MQD) -> OldMQD when
+ MQD :: message_queue_data(),
+ OldMQD :: message_queue_data();
(priority, Level) -> OldLevel when
Level :: priority_level(),
OldLevel :: priority_level();
@@ -2093,7 +2102,7 @@ process_flag(_Flag, _Value) ->
min_bin_vheap_size |
monitored_by |
monitors |
- off_heap_message_queue |
+ message_queue_data |
priority |
reductions |
registered_name |
@@ -2135,7 +2144,7 @@ process_flag(_Flag, _Value) ->
{monitors,
Monitors :: [{process, Pid :: pid() |
{RegName :: atom(), Node :: node()}}]} |
- {off_heap_message_queue, OHMQ :: boolean()} |
+ {message_queue_data, MQD :: message_queue_data()} |
{priority, Level :: priority_level()} |
{reductions, Number :: non_neg_integer()} |
{registered_name, Atom :: atom()} |
@@ -2438,7 +2447,7 @@ tuple_to_list(_Tuple) ->
(multi_scheduling) -> disabled | blocked | enabled;
(multi_scheduling_blockers) -> [Pid :: pid()];
(nif_version) -> string();
- (off_heap_message_queue) -> boolean();
+ (message_queue_data) -> message_queue_data();
(otp_release) -> string();
(os_monotonic_time_source) -> [{atom(),term()}];
(os_system_time_source) -> [{atom(),term()}];
@@ -2574,7 +2583,7 @@ spawn_monitor(M, F, A) ->
| {fullsweep_after, Number :: non_neg_integer()}
| {min_heap_size, Size :: non_neg_integer()}
| {min_bin_vheap_size, VSize :: non_neg_integer()}
- | {off_heap_message_queue, OHMQ :: boolean()}.
+ | {message_queue_data, MQD :: message_queue_data()}.
-spec spawn_opt(Fun, Options) -> pid() | {pid(), reference()} when
Fun :: function(),
diff --git a/erts/preloaded/src/erts_internal.erl b/erts/preloaded/src/erts_internal.erl
index 7ed4efea4b..426749264f 100644
--- a/erts/preloaded/src/erts_internal.erl
+++ b/erts/preloaded/src/erts_internal.erl
@@ -31,8 +31,8 @@
-export([await_port_send_result/3]).
-export([cmp_term/2]).
--export([map_to_tuple_keys/1, map_type/1, map_hashmap_children/1]).
--export([port_command/3, port_connect/2, port_close/1,
+-export([map_to_tuple_keys/1, term_type/1, map_hashmap_children/1]).
+-export([open_port/2, port_command/3, port_connect/2, port_close/1,
port_control/3, port_call/3, port_info/1, port_info/2]).
-export([request_system_task/3]).
@@ -88,6 +88,13 @@ gather_io_bytes(Ref, No, InAcc, OutAcc) ->
%% Statically linked port NIFs
%%
+-spec erts_internal:open_port(PortName, PortSettings) -> Result when
+ PortName :: tuple(),
+ PortSettings :: term(),
+ Result :: port() | reference() | atom().
+open_port(_PortName, _PortSettings) ->
+ erlang:nif_error(undefined).
+
-spec erts_internal:port_command(Port, Data, OptionList) -> Result when
Port :: port() | atom(),
Data :: iodata(),
@@ -215,12 +222,18 @@ cmp_term(_A,_B) ->
map_to_tuple_keys(_M) ->
erlang:nif_error(undefined).
-%% return the internal map type
--spec map_type(M) -> Type when
- M :: map(),
- Type :: 'flatmap' | 'hashmap' | 'hashmap_node'.
-
-map_type(_M) ->
+%% return the internal term type
+-spec term_type(T) -> Type when
+ T :: term(),
+ Type :: 'flatmap' | 'hashmap' | 'hashmap_node'
+ | 'fixnum' | 'bignum' | 'hfloat'
+ | 'list' | 'tuple' | 'export' | 'fun'
+ | 'refc_binary' | 'heap_binary' | 'sub_binary'
+ | 'reference' | 'external_reference'
+ | 'pid' | 'external_pid' | 'port' | 'external_port'
+ | 'atom' | 'catch' | 'nil'.
+
+term_type(_T) ->
erlang:nif_error(undefined).
%% return the internal hashmap sub-nodes from
diff --git a/erts/preloaded/src/init.erl b/erts/preloaded/src/init.erl
index 0ad5824ad1..383c4a1ec6 100644
--- a/erts/preloaded/src/init.erl
+++ b/erts/preloaded/src/init.erl
@@ -23,7 +23,6 @@
%% a local file or distributed from another erlang node.
%%
%% Flags:
-%% -id Identity : identity of the system.
%% -boot File : Absolute file name of the boot script.
%% -boot_var Var Value
%% : $Var in the boot script is expanded to
@@ -75,6 +74,19 @@
subscribed = []}).
-type state() :: #state{}.
+%% Data for eval_script/2.
+-record(es,
+ {init,
+ debug,
+ path,
+ pa,
+ pz,
+ path_choice,
+ prim_load,
+ load_mode,
+ vars
+ }).
+
-define(ON_LOAD_HANDLER, init__boot__on_load_handler).
debug(false, _) -> ok;
@@ -169,8 +181,7 @@ boot(BootArgs) ->
process_flag(trap_exit, true),
{Start0,Flags,Args} = parse_boot_args(BootArgs),
Start = map(fun prepare_run_args/1, Start0),
- Flags0 = flags_to_atoms_again(Flags),
- boot(Start,Flags0,Args).
+ boot(Start, Flags, Args).
prepare_run_args({eval, [Expr]}) ->
{eval,Expr};
@@ -202,16 +213,6 @@ map(_F, []) ->
map(F, [X|Rest]) ->
[F(X) | map(F, Rest)].
-flags_to_atoms_again([]) ->
- [];
-flags_to_atoms_again([{F0,L0}|Rest]) ->
- L = L0,
- F = b2a(F0),
- [{F,L}|flags_to_atoms_again(Rest)];
-flags_to_atoms_again([{F0}|Rest]) ->
- F = b2a(F0),
- [{F}|flags_to_atoms_again(Rest)].
-
-spec code_path_choice() -> 'relaxed' | 'strict'.
code_path_choice() ->
case get_argument(code_path_choice) of
@@ -337,7 +338,7 @@ boot_loop(BootPid, State) ->
end.
ensure_loaded(Module, Loaded) ->
- File = concat([Module,objfile_extension()]),
+ File = atom_to_list(Module) ++ objfile_extension(),
case catch load_mod(Module,File) of
{ok, FullName} ->
{{module, Module}, [{Module, FullName}|Loaded]};
@@ -451,9 +452,9 @@ do_handle_msg(Msg,State) ->
%%% -------------------------------------------------
make_permanent(Boot,Config,Flags0,State) ->
- case set_flag('-boot',Boot,Flags0) of
+ case set_flag(boot, Boot, Flags0) of
{ok,Flags1} ->
- case set_flag('-config',Config,Flags1) of
+ case set_flag(config, Config, Flags1) of
{ok,Flags} ->
{ok,State#state{flags = Flags}};
Error ->
@@ -691,17 +692,15 @@ sleep(T) -> receive after T -> ok end.
%%% The loader shall run for ever!
%%% -------------------------------------------------
-start_prim_loader(Init,Id,Pgm,Nodes,Path,{Pa,Pz}) ->
- case erl_prim_loader:start(Id,Pgm,Nodes) of
- {ok,Pid} when Path =:= false ->
- InitPath = append(Pa,["."|Pz]),
- erl_prim_loader:set_path(InitPath),
- add_to_kernel(Init,Pid),
- Pid;
+start_prim_loader(Init, Path0, {Pa,Pz}) ->
+ Path = case Path0 of
+ false -> Pa ++ ["."|Pz];
+ _ -> Path0
+ end,
+ case erl_prim_loader:start() of
{ok,Pid} ->
erl_prim_loader:set_path(Path),
- add_to_kernel(Init,Pid),
- Pid;
+ add_to_kernel(Init, Pid);
{error,Reason} ->
erlang:display({"cannot start loader",Reason}),
exit(Reason)
@@ -715,13 +714,6 @@ add_to_kernel(Init,Pid) ->
ok
end.
-prim_load_flags(Flags) ->
- PortPgm = get_flag('-loader',Flags,<<"efile">>),
- Hosts = get_flag_list('-hosts', Flags, []),
- Id = get_flag('-id',Flags,none),
- Path = get_flag_list('-path',Flags,false),
- {PortPgm, Hosts, Id, Path}.
-
%%% -------------------------------------------------
%%% The boot process fetches a boot script and loads
%%% all modules specified and starts spec. processes.
@@ -734,24 +726,23 @@ do_boot(Flags,Start) ->
do_boot(Init,Flags,Start) ->
process_flag(trap_exit,true),
- {Pgm0,Nodes,Id,Path} = prim_load_flags(Flags),
- Root = b2s(get_flag('-root',Flags)),
- PathFls = path_flags(Flags),
- Pgm = b2s(Pgm0),
- _Pid = start_prim_loader(Init,b2a(Id),Pgm,bs2as(Nodes),
- bs2ss(Path),PathFls),
+ Root = get_root(Flags),
+ Path = get_flag_list(path, Flags, false),
+ {Pa,Pz} = PathFls = path_flags(Flags),
+ start_prim_loader(Init, bs2ss(Path), PathFls),
BootFile = bootfile(Flags,Root),
BootList = get_boot(BootFile,Root),
- LoadMode = b2a(get_flag('-mode',Flags,false)),
- Deb = b2a(get_flag('-init_debug',Flags,false)),
+ LoadMode = b2a(get_flag(mode, Flags, false)),
+ Deb = b2a(get_flag(init_debug, Flags, false)),
catch ?ON_LOAD_HANDLER ! {init_debug_flag,Deb},
- BootVars = get_flag_args('-boot_var',Flags),
- ParallelLoad =
- (Pgm =:= "efile") and (erlang:system_info(thread_pool_size) > 0),
+ BootVars = get_boot_vars(Root, Flags),
PathChoice = code_path_choice(),
- eval_script(BootList,Init,PathFls,{Root,BootVars},Path,
- {true,LoadMode,ParallelLoad},Deb,PathChoice),
+ Es = #es{init=Init,debug=Deb,path=Path,pa=Pa,pz=Pz,
+ path_choice=PathChoice,
+ prim_load=true,load_mode=LoadMode,
+ vars=BootVars},
+ eval_script(BootList, Es),
%% To help identifying Purify windows that pop up,
%% print the node name into the Purify log.
@@ -759,21 +750,43 @@ do_boot(Init,Flags,Start) ->
start_em(Start).
+get_root(Flags) ->
+ case get_argument(root, Flags) of
+ {ok,[[Root]]} ->
+ Root;
+ _ ->
+ exit(no_or_multiple_root_variables)
+ end.
+
+get_boot_vars(Root, Flags) ->
+ BootVars = get_boot_vars_1(#{}, Flags),
+ RootKey = <<"ROOT">>,
+ BootVars#{RootKey=>Root}.
+
+get_boot_vars_1(Vars, [{boot_var,[Key,Value]}|T]) ->
+ get_boot_vars_1(Vars#{Key=>Value}, T);
+get_boot_vars_1(_, [{boot_var,_}|_]) ->
+ exit(invalid_boot_var_argument);
+get_boot_vars_1(Vars, [_|T]) ->
+ get_boot_vars_1(Vars, T);
+get_boot_vars_1(Vars, []) ->
+ Vars.
+
bootfile(Flags,Root) ->
- b2s(get_flag('-boot',Flags,concat([Root,"/bin/start"]))).
+ b2s(get_flag(boot, Flags, Root++"/bin/start")).
path_flags(Flags) ->
- Pa = append(reverse(get_flag_args('-pa',Flags))),
- Pz = append(get_flag_args('-pz',Flags)),
+ Pa = append(reverse(get_flag_args(pa, Flags))),
+ Pz = append(get_flag_args(pz, Flags)),
{bs2ss(Pa),bs2ss(Pz)}.
get_boot(BootFile0,Root) ->
- BootFile = concat([BootFile0,".boot"]),
+ BootFile = BootFile0 ++ ".boot",
case get_boot(BootFile) of
{ok, CmdList} ->
CmdList;
not_found -> %% Check for default.
- BootF = concat([Root,"/bin/",BootFile]),
+ BootF = Root ++ "/bin/" ++ BootFile,
case get_boot(BootF) of
{ok, CmdList} ->
CmdList;
@@ -807,93 +820,67 @@ get_boot(BootFile) ->
%% boot process hangs (we want to ensure syncronicity).
%%
-eval_script([{progress,Info}|CfgL],Init,PathFs,Vars,P,Ph,Deb,PathChoice) ->
- debug(Deb,{progress,Info}),
+eval_script([{progress,Info}=Progress|T], #es{debug=Deb}=Es) ->
+ debug(Deb, Progress),
init ! {self(),progress,Info},
- eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice);
-eval_script([{preLoaded,_}|CfgL],Init,PathFs,Vars,P,Ph,Deb,PathChoice) ->
- eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice);
-eval_script([{path,Path}|CfgL],Init,{Pa,Pz},Vars,false,Ph,Deb,PathChoice) ->
+ eval_script(T, Es);
+eval_script([{preLoaded,_}|T], #es{}=Es) ->
+ eval_script(T, Es);
+eval_script([{path,Path}|T], #es{path=false,pa=Pa,pz=Pz,
+ path_choice=PathChoice,
+ vars=Vars}=Es) ->
RealPath0 = make_path(Pa, Pz, Path, Vars),
RealPath = patch_path(RealPath0, PathChoice),
erl_prim_loader:set_path(RealPath),
- eval_script(CfgL,Init,{Pa,Pz},Vars,false,Ph,Deb,PathChoice);
-eval_script([{path,_}|CfgL],Init,PathFs,Vars,P,Ph,Deb,PathChoice) ->
+ eval_script(T, Es);
+eval_script([{path,_}|T], #es{}=Es) ->
%% Ignore, use the command line -path flag.
- eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice);
-eval_script([{kernel_load_completed}|CfgL],Init,PathFs,Vars,P,{_,embedded,Par},Deb,PathChoice) ->
- eval_script(CfgL,Init,PathFs,Vars,P,{true,embedded,Par},Deb,PathChoice);
-eval_script([{kernel_load_completed}|CfgL],Init,PathFs,Vars,P,{_,E,Par},Deb,PathChoice) ->
- eval_script(CfgL,Init,PathFs,Vars,P,{false,E,Par},Deb,PathChoice);
-eval_script([{primLoad,Mods}|CfgL],Init,PathFs,Vars,P,{true,E,Par},Deb,PathChoice)
+ eval_script(T, Es);
+eval_script([{kernel_load_completed}|T], #es{load_mode=Mode}=Es0) ->
+ Es = case Mode of
+ embedded -> Es0;
+ _ -> Es0#es{prim_load=false}
+ end,
+ eval_script(T, Es);
+eval_script([{primLoad,[Mod]}|T], #es{prim_load=true}=Es) ->
+ %% Common special case (loading of error_handler). Nothing
+ %% to gain by parallel loading.
+ File = atom_to_list(Mod) ++ objfile_extension(),
+ {ok,Full} = load_mod(Mod, File),
+ init ! {self(),loaded,{Mod,Full}}, % Tell init about loaded module
+ eval_script(T, Es);
+eval_script([{primLoad,Mods}|T], #es{init=Init,prim_load=PrimLoad}=Es)
when is_list(Mods) ->
- if
- Par =:= true ->
- par_load_modules(Mods,Init);
+ case PrimLoad of
true ->
- load_modules(Mods)
+ load_modules(Mods, Init);
+ false ->
+ %% Do not load now, code_server does that dynamically!
+ ok
end,
- eval_script(CfgL,Init,PathFs,Vars,P,{true,E,Par},Deb,PathChoice);
-eval_script([{primLoad,_Mods}|CfgL],Init,PathFs,Vars,P,{false,E,Par},Deb,PathChoice) ->
- %% Do not load now, code_server does that dynamically!
- eval_script(CfgL,Init,PathFs,Vars,P,{false,E,Par},Deb,PathChoice);
-eval_script([{kernelProcess,Server,{Mod,Fun,Args}}|CfgL],Init,
- PathFs,Vars,P,Ph,Deb,PathChoice) ->
- debug(Deb,{start,Server}),
- start_in_kernel(Server,Mod,Fun,Args,Init),
- eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice);
-eval_script([{apply,{Mod,Fun,Args}}|CfgL],Init,PathFs,Vars,P,Ph,Deb,PathChoice) ->
- debug(Deb,{apply,{Mod,Fun,Args}}),
- apply(Mod,Fun,Args),
- eval_script(CfgL,Init,PathFs,Vars,P,Ph,Deb,PathChoice);
-eval_script([],_,_,_,_,_,_,_) ->
+ eval_script(T, Es);
+eval_script([{kernelProcess,Server,{Mod,Fun,Args}}|T],
+ #es{init=Init,debug=Deb}=Es) ->
+ debug(Deb, {start,Server}),
+ start_in_kernel(Server, Mod, Fun, Args, Init),
+ eval_script(T, Es);
+eval_script([{apply,{Mod,Fun,Args}}=Apply|T], #es{debug=Deb}=Es) ->
+ debug(Deb, Apply),
+ apply(Mod, Fun, Args),
+ eval_script(T, Es);
+eval_script([], #es{}) ->
ok;
-eval_script(What,_,_,_,_,_,_,_) ->
+eval_script(What, #es{}) ->
exit({'unexpected command in bootfile',What}).
-load_modules([Mod|Mods]) ->
- File = concat([Mod,objfile_extension()]),
+load_modules([Mod|Mods], Init) ->
+ File = atom_to_list(Mod) ++ objfile_extension(),
{ok,Full} = load_mod(Mod,File),
- init ! {self(),loaded,{Mod,Full}}, %% Tell init about loaded module
- load_modules(Mods);
-load_modules([]) ->
+ Init ! {self(),loaded,{Mod,Full}}, %Tell init about loaded module
+ load_modules(Mods, Init);
+load_modules([], _) ->
ok.
-%%% An optimization: erl_prim_loader gets the chance of loading many
-%%% files in parallel, using threads. This will reduce the seek times,
-%%% and loaded code can be processed while other threads are waiting
-%%% for the disk. The optimization is not tried unless the loader is
-%%% "efile" and there is a non-empty pool of threads.
-%%%
-%%% Many threads are needed to get a good result, so it would be
-%%% beneficial to load several applications in parallel. However,
-%%% measurements show that the file system handles one directory at a
-%%% time, regardless if parallel threads are created for files on
-%%% several directories (a guess: writing the meta information when
-%%% the file was last read ('mtime'), forces the file system to sync
-%%% between directories).
-
-par_load_modules(Mods,Init) ->
- Ext = objfile_extension(),
- ModFiles = [{Mod,concat([Mod,Ext])} || Mod <- Mods,
- not erlang:module_loaded(Mod)],
- Self = self(),
- Fun = fun(Mod, BinCode, FullName) ->
- case catch load_mod_code(Mod, BinCode, FullName) of
- {ok, _} ->
- Init ! {Self,loaded,{Mod,FullName}},
- ok;
- _EXIT ->
- {error, Mod}
- end
- end,
- case erl_prim_loader:get_files(ModFiles, Fun) of
- ok ->
- ok;
- {error,Mod} ->
- exit({'cannot load',Mod,get_files})
- end.
-
make_path(Pa, Pz, Path, Vars) ->
append([Pa,append([fix_path(Path,Vars),Pz])]).
@@ -908,34 +895,25 @@ fix_path([Path|Ps], Vars) ->
fix_path(_, _) ->
[].
-add_var("$ROOT/" ++ Path, {Root,_}) ->
- concat([Root, "/", Path]);
-add_var([$$|Path0], {_,VarList}) ->
- {Var,Path} = extract_var(Path0,[]),
- Value = b2s(get_var_value(list_to_binary(Var),VarList)),
- concat([Value, "/", Path]);
-add_var(Path, _) ->
+add_var("$"++Path0, Vars) ->
+ {Var,Path} = extract_var(Path0, []),
+ Key = list_to_binary(Var),
+ case Vars of
+ #{Key:=Value0} ->
+ Value = b2s(Value0),
+ Value ++ "/" ++ Path;
+ _ ->
+ Error0 = "cannot expand $" ++ Var ++ " in bootfile",
+ Error = list_to_atom(Error0),
+ exit(Error)
+ end;
+add_var(Path, _) ->
Path.
extract_var([$/|Path],Var) -> {reverse(Var),Path};
extract_var([H|T],Var) -> extract_var(T,[H|Var]);
extract_var([],Var) -> {reverse(Var),[]}.
-%% get_var_value(Var, [Vars]) where Vars == [atom()]
-get_var_value(Var,[Vars|VarList]) ->
- case get_var_val(Var,Vars) of
- {ok, Value} ->
- Value;
- _ ->
- get_var_value(Var,VarList)
- end;
-get_var_value(Var,[]) ->
- exit(list_to_atom(concat(["cannot expand \$", Var, " in bootfile"]))).
-
-get_var_val(Var,[Var,Value|_]) -> {ok, Value};
-get_var_val(Var,[_,_|Vars]) -> get_var_val(Var,Vars);
-get_var_val(_,_) -> false.
-
patch_path(Dirs, strict) ->
Dirs;
patch_path(Dirs, relaxed) ->
@@ -1049,18 +1027,10 @@ start_it({eval,Bin}) ->
{value, _Value, _Bs} = erl_eval:exprs(Expr, erl_eval:new_bindings()),
ok;
start_it([_|_]=MFA) ->
- Ref = make_ref(),
- case catch {Ref,case MFA of
- [M] -> M:start();
- [M,F] -> M:F();
- [M,F|Args] -> M:F(Args) % Args is a list
- end} of
- {Ref,R} ->
- R;
- {'EXIT',Reason} ->
- exit(Reason);
- Other ->
- throw(Other)
+ case MFA of
+ [M] -> M:start();
+ [M,F] -> M:F();
+ [M,F|Args] -> M:F(Args) % Args is a list
end.
%%
@@ -1102,7 +1072,7 @@ load_mod_code(Mod, BinCode, FullName) ->
%% --------------------------------------------------------
shutdown_timer(Flags) ->
- case get_flag('-shutdown_time',Flags,infinity) of
+ case get_flag(shutdown_time, Flags, infinity) of
infinity ->
self();
Time ->
@@ -1152,14 +1122,10 @@ parse_boot_args([B|Bs], Ss, Fs, As) ->
eval_arg ->
{Expr,Rest} = get_args(Bs, []),
parse_boot_args(Rest, [{eval, Expr}|Ss], Fs, As);
- flag ->
+ {flag,A} ->
{F,Rest} = get_args(Bs, []),
- Fl = case F of
- [] -> [B];
- FF -> [B,FF]
- end,
- parse_boot_args(Rest, Ss,
- [list_to_tuple(Fl)|Fs], As);
+ Fl = {A,F},
+ parse_boot_args(Rest, Ss, [Fl|Fs], As);
arg ->
parse_boot_args(Bs, Ss, Fs, [B|As]);
end_args ->
@@ -1173,12 +1139,8 @@ check(<<"-s">>) -> start_arg;
check(<<"-run">>) -> start_arg2;
check(<<"-eval">>) -> eval_arg;
check(<<"--">>) -> end_args;
-check(X) when is_binary(X) ->
- case binary_to_list(X) of
- [$-|_Rest] -> flag;
- _Chars -> arg %Even empty atoms
- end;
-check(_X) -> arg. %This should never occur
+check(<<"-",Flag/binary>>) -> {flag,b2a(Flag)};
+check(_) -> arg.
get_args([B|Bs], As) ->
case check(B) of
@@ -1187,7 +1149,7 @@ get_args([B|Bs], As) ->
start_arg2 -> {reverse(As), [B|Bs]};
eval_arg -> {reverse(As), [B|Bs]};
end_args -> {reverse(As), Bs};
- flag -> {reverse(As), [B|Bs]};
+ {flag,_} -> {reverse(As), [B|Bs]};
arg ->
get_args(Bs, [B|As])
end;
@@ -1199,44 +1161,28 @@ get_args([], As) -> {reverse(As),[]}.
%% atom() if a single arg was given.
%% list(atom()) if several args were given.
%%
-get_flag(F,Flags,Default) ->
- case catch get_flag(F,Flags) of
- {'EXIT',_} ->
- Default;
- Value ->
- Value
- end.
-
-get_flag(F,Flags) ->
- case search(F,Flags) of
- {value,{F,[V]}} ->
+get_flag(F, Flags, Default) ->
+ case lists:keyfind(F, 1, Flags) of
+ {F,[]} ->
+ true;
+ {F,[V]} ->
V;
- {value,{F,V}} ->
+ {F,V} ->
V;
- {value,{F}} -> % Flag given!
- true;
_ ->
- exit(list_to_atom(concat(["no ",F," flag"])))
+ Default
end.
%%
%% Internal get_flag function, with default value.
%% Return: list(atom())
%%
-get_flag_list(F,Flags,Default) ->
- case catch get_flag_list(F,Flags) of
- {'EXIT',_} ->
- Default;
- Value ->
- Value
- end.
-
-get_flag_list(F,Flags) ->
- case search(F,Flags) of
- {value,{F,V}} ->
+get_flag_list(F, Flags, Default) ->
+ case lists:keyfind(F, 1, Flags) of
+ {F,[_|_]=V} ->
V;
_ ->
- exit(list_to_atom(concat(["no ",F," flag"])))
+ Default
end.
%%
@@ -1246,21 +1192,15 @@ get_flag_list(F,Flags) ->
%%
get_flag_args(F,Flags) -> get_flag_args(F,Flags,[]).
-get_flag_args(F,[{F,V}|Flags],Acc) when is_list(V) ->
- get_flag_args(F,Flags,[V|Acc]);
get_flag_args(F,[{F,V}|Flags],Acc) ->
- get_flag_args(F,Flags,[[V]|Acc]);
+ get_flag_args(F,Flags,[V|Acc]);
get_flag_args(F,[_|Flags],Acc) ->
get_flag_args(F,Flags,Acc);
get_flag_args(_,[],Acc) ->
reverse(Acc).
get_arguments([{F,V}|Flags]) ->
- [$-|Fl] = atom_to_list(F),
- [{list_to_atom(Fl),to_strings(V)}|get_arguments(Flags)];
-get_arguments([{F}|Flags]) ->
- [$-|Fl] = atom_to_list(F),
- [{list_to_atom(Fl),[]}|get_arguments(Flags)];
+ [{F,to_strings(V)}|get_arguments(Flags)];
get_arguments([]) ->
[].
@@ -1268,44 +1208,26 @@ to_strings([H|T]) when is_atom(H) -> [atom_to_list(H)|to_strings(T)];
to_strings([H|T]) when is_binary(H) -> [b2s(H)|to_strings(T)];
to_strings([]) -> [].
-get_argument(Arg,Flags) ->
- Args = get_arguments(Flags),
- case get_argument1(Arg,Args) of
- [] ->
- error;
- Value ->
- {ok,Value}
+get_argument(Arg, Flags) ->
+ case get_argument1(Arg, Flags) of
+ [] -> error;
+ Value -> {ok,Value}
end.
-get_argument1(Arg,[{Arg,V}|Args]) ->
- [V|get_argument1(Arg,Args)];
-get_argument1(Arg,[_|Args]) ->
- get_argument1(Arg,Args);
-get_argument1(_,[]) ->
+get_argument1(Arg, [{Arg,V}|Args]) ->
+ [to_strings(V)|get_argument1(Arg, Args)];
+get_argument1(Arg, [_|Args]) ->
+ get_argument1(Arg, Args);
+get_argument1(_, []) ->
[].
set_argument([{Flag,_}|Flags],Flag,Value) ->
[{Flag,[Value]}|Flags];
-set_argument([{Flag}|Flags],Flag,Value) ->
- [{Flag,[Value]}|Flags];
set_argument([Item|Flags],Flag,Value) ->
[Item|set_argument(Flags,Flag,Value)];
set_argument([],Flag,Value) ->
[{Flag,[Value]}].
-concat([A|T]) when is_atom(A) ->
- atom_to_list(A) ++ concat(T);
-concat([C|T]) when is_integer(C), 0 =< C, C =< 255 ->
- [C|concat(T)];
-concat([Bin|T]) when is_binary(Bin) ->
- binary_to_list(Bin) ++ concat(T);
-concat([S|T]) ->
- S ++ concat(T);
-concat([]) ->
- [].
-
-append(L, Z) -> L ++ Z.
-
append([E]) -> E;
append([H|T]) ->
H ++ append(T);
@@ -1320,13 +1242,6 @@ reverse([A, B]) ->
reverse([A, B | L]) ->
lists:reverse(L, [B, A]). % BIF
-search(Key, [H|_T]) when is_tuple(H), element(1, H) =:= Key ->
- {value, H};
-search(Key, [_|T]) ->
- search(Key, T);
-search(_Key, []) ->
- false.
-
-spec objfile_extension() -> nonempty_string().
objfile_extension() ->
".beam".
diff --git a/erts/preloaded/src/prim_file.erl b/erts/preloaded/src/prim_file.erl
index c87b2645ec..2eb1b1d408 100644
--- a/erts/preloaded/src/prim_file.erl
+++ b/erts/preloaded/src/prim_file.erl
@@ -1276,6 +1276,7 @@ lseek_position(_) ->
%% Translates the response from the driver into
%% {ok, Result} or {error, Reason}.
+-dialyzer({no_improper_lists, translate_response/2}).
translate_response(?FILE_RESP_OK, []) ->
ok;
translate_response(?FILE_RESP_ERROR, List) when is_list(List) ->
diff --git a/erts/test/ethread_SUITE.erl b/erts/test/ethread_SUITE.erl
index 4a40dbb11e..388af66b23 100644
--- a/erts/test/ethread_SUITE.erl
+++ b/erts/test/ethread_SUITE.erl
@@ -123,38 +123,6 @@ try_lock_mutex(suite) ->
try_lock_mutex(Config) ->
run_case(Config, "try_lock_mutex", "").
-%% Remove dead code?
-
-% wd_dispatch(P) ->
-% receive
-% bye ->
-% ?line true = port_command(P, "-1 "),
-% ?line bye;
-% L when is_list(L) ->
-% ?line true = port_command(P, L),
-% ?line wd_dispatch(P)
-% end.
-%
-% watchdog(Port) ->
-% ?line process_flag(priority, max),
-% ?line receive after 500 -> ok end,
-%
-% ?line random:seed(),
-% ?line true = port_command(Port, "0 "),
-% ?line lists:foreach(fun (T) ->
-% erlang:send_after(T,
-% self(),
-% integer_to_list(T)
-% ++ " ")
-% end,
-% lists:usort(lists:map(fun (_) ->
-% random:uniform(4500)+500
-% end,
-% lists:duplicate(50,0)))),
-% ?line erlang:send_after(5100, self(), bye),
-%
-% wd_dispatch(Port).
-
cond_wait(doc) ->
["Tests ethr_cond_wait with ethr_cond_signal and ethr_cond_broadcast."];
cond_wait(suite) ->
diff --git a/erts/test/run_erl_SUITE.erl b/erts/test/run_erl_SUITE.erl
index 328477d870..6759d41a2b 100644
--- a/erts/test/run_erl_SUITE.erl
+++ b/erts/test/run_erl_SUITE.erl
@@ -141,12 +141,10 @@ heavier_1(Config) ->
?line ToErl = open_port({spawn,"to_erl "++Pipe}, []),
io:format("ToErl = ~p\n", [ToErl]),
- X = 1,
- Y = 555,
- Z = 42,
- ?line random:seed(X, Y, Z),
- SeedCmd = lists:flatten(io_lib:format("random:seed(~p, ~p, ~p). \r\n",
- [X,Y,Z])),
+ Seed = {1,555,42},
+ rand:seed(exsplus, Seed),
+ SeedCmd = lists:flatten(io_lib:format("rand:seed(exsplus, ~p). \r\n",
+ [Seed])),
?line io:format("~p\n", [SeedCmd]),
?line erlang:port_command(ToErl, SeedCmd),
@@ -157,9 +155,9 @@ heavier_1(Config) ->
"F = fun(F,0) -> ok; "++
"(F,N) -> " ++
"io:format(\"\\\"~s\\\"~n\","++
- "[[35|[random:uniform(25)+65 || " ++
+ "[[35|[rand:uniform(25)+65 || " ++
"_ <- lists:seq(1, "++
- "random:uniform("++
+ "rand:uniform("++
integer_to_list(MaxLen)++
"))]]]), "++
"F(F,N-1) "++
@@ -189,8 +187,8 @@ receive_all(Iter, ToErl, MaxLen) ->
receive_all_1(0, _, _, _) -> ok;
receive_all_1(Iter, Line, ToErl, MaxLen) ->
- NumChars = random:uniform(MaxLen),
- Pattern = [random:uniform(25)+65 || _ <- lists:seq(1, NumChars)],
+ NumChars = rand:uniform(MaxLen),
+ Pattern = [rand:uniform(25)+65 || _ <- lists:seq(1, NumChars)],
receive_all_2(Iter, {NumChars,Pattern}, Line, ToErl, MaxLen).