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-rw-r--r--erts/aclocal.m41531
1 files changed, 1153 insertions, 378 deletions
diff --git a/erts/aclocal.m4 b/erts/aclocal.m4
index 25f40944e7..013bfe5652 100644
--- a/erts/aclocal.m4
+++ b/erts/aclocal.m4
@@ -1,18 +1,19 @@
dnl
dnl %CopyrightBegin%
dnl
-dnl Copyright Ericsson AB 1998-2013. All Rights Reserved.
+dnl Copyright Ericsson AB 1998-2016. All Rights Reserved.
dnl
-dnl The contents of this file are subject to the Erlang Public License,
-dnl Version 1.1, (the "License"); you may not use this file except in
-dnl compliance with the License. You should have received a copy of the
-dnl Erlang Public License along with this software. If not, it can be
-dnl retrieved online at http://www.erlang.org/.
+dnl Licensed under the Apache License, Version 2.0 (the "License");
+dnl you may not use this file except in compliance with the License.
+dnl You may obtain a copy of the License at
dnl
-dnl Software distributed under the License is distributed on an "AS IS"
-dnl basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-dnl the License for the specific language governing rights and limitations
-dnl under the License.
+dnl http://www.apache.org/licenses/LICENSE-2.0
+dnl
+dnl Unless required by applicable law or agreed to in writing, software
+dnl distributed under the License is distributed on an "AS IS" BASIS,
+dnl WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+dnl See the License for the specific language governing permissions and
+dnl limitations under the License.
dnl
dnl %CopyrightEnd%
dnl
@@ -60,7 +61,6 @@ AC_ARG_VAR(erl_xcomp_isysroot, [Absolute cross system root include path (only us
dnl Cross compilation variables
AC_ARG_VAR(erl_xcomp_bigendian, [big endian system: yes|no (only used when cross compiling)])
AC_ARG_VAR(erl_xcomp_double_middle_endian, [double-middle-endian system: yes|no (only used when cross compiling)])
-AC_ARG_VAR(erl_xcomp_linux_clock_gettime_correction, [clock_gettime() can be used for time correction: yes|no (only used when cross compiling)])
AC_ARG_VAR(erl_xcomp_linux_nptl, [have Native POSIX Thread Library: yes|no (only used when cross compiling)])
AC_ARG_VAR(erl_xcomp_linux_usable_sigusrx, [SIGUSR1 and SIGUSR2 can be used: yes|no (only used when cross compiling)])
AC_ARG_VAR(erl_xcomp_linux_usable_sigaltstack, [have working sigaltstack(): yes|no (only used when cross compiling)])
@@ -127,18 +127,18 @@ MIXED_MSYS=no
AC_MSG_CHECKING(for mixed cygwin or msys and native VC++ environment)
if test "X$host" = "Xwin32" -a "x$GCC" != "xyes"; then
- if test -x /usr/bin/cygpath; then
- CFLAGS="-O2"
- MIXED_CYGWIN=yes
- AC_MSG_RESULT([Cygwin and VC])
- MIXED_CYGWIN_VC=yes
- CPPFLAGS="$CPPFLAGS -DERTS_MIXED_CYGWIN_VC"
- elif test -x /usr/bin/msysinfo; then
- CFLAGS="-O2"
+ if test -x /usr/bin/msys-?.0.dll; then
+ CFLAGS="$CFLAGS -O2"
MIXED_MSYS=yes
AC_MSG_RESULT([MSYS and VC])
MIXED_MSYS_VC=yes
CPPFLAGS="$CPPFLAGS -DERTS_MIXED_MSYS_VC"
+ elif test -x /usr/bin/cygpath; then
+ CFLAGS="$CFLAGS -O2"
+ MIXED_CYGWIN=yes
+ AC_MSG_RESULT([Cygwin and VC])
+ MIXED_CYGWIN_VC=yes
+ CPPFLAGS="$CPPFLAGS -DERTS_MIXED_CYGWIN_VC"
else
AC_MSG_RESULT([undeterminable])
AC_MSG_ERROR(Seems to be mixed windows but not with cygwin, cannot handle this!)
@@ -162,7 +162,7 @@ if test "x$MIXED_MSYS" != "xyes"; then
AC_MSG_CHECKING(for mixed cygwin and native MinGW environment)
if test "X$host" = "Xwin32" -a "x$GCC" = x"yes"; then
if test -x /usr/bin/cygpath; then
- CFLAGS="-O2"
+ CFLAGS="$CFLAGS -O2"
MIXED_CYGWIN=yes
AC_MSG_RESULT([yes])
MIXED_CYGWIN_MINGW=yes
@@ -231,31 +231,31 @@ lbl1:
return 1;
lbl2:
return 2;
-],ac_cv_prog_emu_cc=$CC,ac_cv_prog_emu_cc=no)
+],ac_cv_prog_emu_cc="$CC",ac_cv_prog_emu_cc=no)
-if test $ac_cv_prog_emu_cc = no; then
+if test "$ac_cv_prog_emu_cc" = no; then
for ac_progname in emu_cc.sh gcc-4.2 gcc; do
IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS=":"
ac_dummy="$PATH"
for ac_dir in $ac_dummy; do
test -z "$ac_dir" && ac_dir=.
- if test -f $ac_dir/$ac_progname; then
- ac_cv_prog_emu_cc=$ac_dir/$ac_progname
+ if test -f "$ac_dir/$ac_progname"; then
+ ac_cv_prog_emu_cc="$ac_dir/$ac_progname"
break
fi
done
IFS="$ac_save_ifs"
- if test $ac_cv_prog_emu_cc != no; then
+ if test "$ac_cv_prog_emu_cc" != no; then
break
fi
done
fi
-if test $ac_cv_prog_emu_cc != no; then
- save_CC=$CC
+if test "$ac_cv_prog_emu_cc" != no; then
+ save_CC="$CC"
save_CFLAGS=$CFLAGS
save_CPPFLAGS=$CPPFLAGS
- CC=$ac_cv_prog_emu_cc
+ CC="$ac_cv_prog_emu_cc"
CFLAGS=""
CPPFLAGS=""
AC_TRY_COMPILE([],[
@@ -276,17 +276,17 @@ if test $ac_cv_prog_emu_cc != no; then
return 1;
lbl2:
return 2;
- ],ac_cv_prog_emu_cc=$CC,ac_cv_prog_emu_cc=no)
+ ],ac_cv_prog_emu_cc="$CC",ac_cv_prog_emu_cc=no)
CC=$save_CC
CFLAGS=$save_CFLAGS
CPPFLAGS=$save_CPPFLAGS
fi
])
-if test $ac_cv_prog_emu_cc = no; then
+if test "$ac_cv_prog_emu_cc" = no; then
AC_DEFINE(NO_JUMP_TABLE,[],[Defined if no found C compiler can handle jump tables])
- EMU_CC=$CC
+ EMU_CC="$CC"
else
- EMU_CC=$ac_cv_prog_emu_cc
+ EMU_CC="$ac_cv_prog_emu_cc"
fi
AC_SUBST(EMU_CC)
])
@@ -540,7 +540,7 @@ dnl
AC_DEFUN(LM_SYS_MULTICAST,
[AC_CACHE_CHECK([for multicast support], ac_cv_sys_multicast_support,
-[AC_EGREP_CPP(yes,
+[AC_EGREP_CPP(^yes$,
[#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
@@ -705,6 +705,250 @@ esac
])# AC_C_DOUBLE_MIDDLE_ENDIAN
+AC_DEFUN(ERL_MONOTONIC_CLOCK,
+[
+ if test "$3" = "yes"; then
+ default_resolution_clock_gettime_monotonic="CLOCK_HIGHRES CLOCK_BOOTTIME CLOCK_MONOTONIC"
+ low_resolution_clock_gettime_monotonic="CLOCK_MONOTONIC_COARSE CLOCK_MONOTONIC_FAST"
+ high_resolution_clock_gettime_monotonic="CLOCK_MONOTONIC_PRECISE"
+ else
+ default_resolution_clock_gettime_monotonic="CLOCK_HIGHRES CLOCK_UPTIME CLOCK_MONOTONIC"
+ low_resolution_clock_gettime_monotonic="CLOCK_MONOTONIC_COARSE CLOCK_UPTIME_FAST"
+ high_resolution_clock_gettime_monotonic="CLOCK_UPTIME_PRECISE"
+ fi
+
+ case "$1" in
+ high_resolution)
+ check_msg="high resolution "
+ prefer_resolution_clock_gettime_monotonic="$high_resolution_clock_gettime_monotonic"
+ ;;
+ low_resolution)
+ check_msg="low resolution "
+ prefer_resolution_clock_gettime_monotonic="$low_resolution_clock_gettime_monotonic"
+ ;;
+ custom_resolution)
+ check_msg="custom resolution "
+ prefer_resolution_clock_gettime_monotonic="$2"
+ ;;
+ *)
+ check_msg="custom "
+ prefer_resolution_clock_gettime_monotonic="$2"
+ ;;
+ esac
+
+ AC_CACHE_CHECK([for clock_gettime(CLOCK_MONOTONIC_RAW, _)], erl_cv_clock_gettime_monotonic_raw,
+ [
+ AC_TRY_COMPILE([
+#include <time.h>
+ ],
+ [
+ struct timespec ts;
+ long long result;
+ clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
+ result = ((long long) ts.tv_sec) * 1000000000LL +
+ ((long long) ts.tv_nsec);
+ ],
+ erl_cv_clock_gettime_monotonic_raw=yes,
+ erl_cv_clock_gettime_monotonic_raw=no)
+ ])
+
+ AC_CACHE_CHECK([for clock_gettime() with ${check_msg}monotonic clock type], erl_cv_clock_gettime_monotonic_$1,
+ [
+ for clock_type in $prefer_resolution_clock_gettime_monotonic $default_resolution_clock_gettime_monotonic $high_resolution_clock_gettime_monotonic $low_resolution_clock_gettime_monotonic; do
+ AC_TRY_COMPILE([
+#include <time.h>
+ ],
+ [
+ struct timespec ts;
+ long long result;
+ clock_gettime($clock_type,&ts);
+ result = ((long long) ts.tv_sec) * 1000000000LL +
+ ((long long) ts.tv_nsec);
+ ],
+ erl_cv_clock_gettime_monotonic_$1=$clock_type,
+ erl_cv_clock_gettime_monotonic_$1=no)
+ test $erl_cv_clock_gettime_monotonic_$1 = no || break
+ done
+ ])
+
+ AC_CHECK_FUNCS([clock_getres clock_get_attributes gethrtime])
+
+ AC_CACHE_CHECK([for mach clock_get_time() with monotonic clock type], erl_cv_mach_clock_get_time_monotonic,
+ [
+ AC_TRY_COMPILE([
+#include <mach/clock.h>
+#include <mach/mach.h>
+ ],
+ [
+ kern_return_t res;
+ clock_serv_t clk_srv;
+ mach_timespec_t time_spec;
+
+ host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &clk_srv);
+ res = clock_get_time(clk_srv, &time_spec);
+ mach_port_deallocate(mach_task_self(), clk_srv);
+ ],
+ erl_cv_mach_clock_get_time_monotonic=yes,
+ erl_cv_mach_clock_get_time_monotonic=no)
+ ])
+
+ erl_corrected_monotonic_clock=no
+ case $erl_cv_clock_gettime_monotonic_$1-$ac_cv_func_gethrtime-$erl_cv_mach_clock_get_time_monotonic-$host_os in
+ *-*-*-win32)
+ erl_monotonic_clock_func=WindowsAPI
+ ;;
+ CLOCK_*-*-*-linux*)
+ case $erl_cv_clock_gettime_monotonic_$1-$erl_cv_clock_gettime_monotonic_raw in
+ CLOCK_BOOTTIME-yes|CLOCK_MONOTONIC-yes)
+ erl_corrected_monotonic_clock=yes
+ ;;
+ *)
+ # We don't trust CLOCK_MONOTONIC to be NTP
+ # adjusted on linux systems that do not have
+ # CLOCK_MONOTONIC_RAW (although it seems to
+ # be...)
+ ;;
+ esac
+ erl_monotonic_clock_func=clock_gettime
+ ;;
+ no-no-no-linux*)
+ erl_monotonic_clock_func=times
+ ;;
+ CLOCK_*-*-*-*)
+ erl_monotonic_clock_func=clock_gettime
+ ;;
+ no-yes-*-*)
+ erl_monotonic_clock_func=gethrtime
+ ;;
+ no-no-yes-*)
+ erl_monotonic_clock_func=mach_clock_get_time
+ ;;
+ no-no-no-*)
+ erl_monotonic_clock_func=none
+ ;;
+ esac
+
+ erl_monotonic_clock_low_resolution=no
+ erl_monotonic_clock_lib=
+ erl_monotonic_clock_id=
+ case $erl_monotonic_clock_func in
+ clock_gettime)
+ erl_monotonic_clock_id=$erl_cv_clock_gettime_monotonic_$1
+ for low_res_id in $low_resolution_clock_gettime_monotonic; do
+ if test $erl_monotonic_clock_id = $low_res_id; then
+ erl_monotonic_clock_low_resolution=yes
+ break
+ fi
+ done
+ AC_CHECK_LIB(rt, clock_gettime, [erl_monotonic_clock_lib="-lrt"])
+ ;;
+ mach_clock_get_time)
+ erl_monotonic_clock_id=SYSTEM_CLOCK
+ ;;
+ times)
+ erl_monotonic_clock_low_resolution=yes
+ ;;
+ *)
+ ;;
+ esac
+
+])
+
+AC_DEFUN(ERL_WALL_CLOCK,
+[
+ default_resolution_clock_gettime_wall="CLOCK_REALTIME"
+ low_resolution_clock_gettime_wall="CLOCK_REALTIME_COARSE CLOCK_REALTIME_FAST"
+ high_resolution_clock_gettime_wall="CLOCK_REALTIME_PRECISE"
+
+ case "$1" in
+ high_resolution)
+ check_msg="high resolution "
+ prefer_resolution_clock_gettime_wall="$high_resolution_clock_gettime_wall"
+ ;;
+ low_resolution)
+ check_msg="low resolution "
+ prefer_resolution_clock_gettime_wall="$low_resolution_clock_gettime_wall"
+ ;;
+ custom_resolution)
+ check_msg="custom resolution "
+ prefer_resolution_clock_gettime_wall="$2"
+ ;;
+ *)
+ check_msg=""
+ prefer_resolution_clock_gettime_wall=
+ ;;
+ esac
+
+ AC_CACHE_CHECK([for clock_gettime() with ${check_msg}wall clock type], erl_cv_clock_gettime_wall_$1,
+ [
+ for clock_type in $prefer_resolution_clock_gettime_wall $default_resolution_clock_gettime_wall $high_resolution_clock_gettime_wall $low_resolution_clock_gettime_wall; do
+ AC_TRY_COMPILE([
+#include <time.h>
+ ],
+ [
+ struct timespec ts;
+ long long result;
+ clock_gettime($clock_type,&ts);
+ result = ((long long) ts.tv_sec) * 1000000000LL +
+ ((long long) ts.tv_nsec);
+ ],
+ erl_cv_clock_gettime_wall_$1=$clock_type,
+ erl_cv_clock_gettime_wall_$1=no)
+ test $erl_cv_clock_gettime_wall_$1 = no || break
+ done
+ ])
+
+ AC_CHECK_FUNCS([clock_getres clock_get_attributes gettimeofday])
+
+ AC_CACHE_CHECK([for mach clock_get_time() with wall clock type], erl_cv_mach_clock_get_time_wall,
+ [
+ AC_TRY_COMPILE([
+#include <mach/clock.h>
+#include <mach/mach.h>
+ ],
+ [
+ kern_return_t res;
+ clock_serv_t clk_srv;
+ mach_timespec_t time_spec;
+
+ host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &clk_srv);
+ res = clock_get_time(clk_srv, &time_spec);
+ mach_port_deallocate(mach_task_self(), clk_srv);
+ ],
+ erl_cv_mach_clock_get_time_wall=yes,
+ erl_cv_mach_clock_get_time_wall=no)
+ ])
+
+ erl_wall_clock_low_resolution=no
+ erl_wall_clock_id=
+ case $1-$erl_cv_clock_gettime_wall_$1-$erl_cv_mach_clock_get_time_wall-$ac_cv_func_gettimeofday-$host_os in
+ *-*-*-*-win32)
+ erl_wall_clock_func=WindowsAPI
+ erl_wall_clock_low_resolution=yes
+ ;;
+ high_resolution-no-yes-*-*)
+ erl_wall_clock_func=mach_clock_get_time
+ erl_wall_clock_id=CALENDAR_CLOCK
+ ;;
+ *-CLOCK_*-*-*-*)
+ erl_wall_clock_func=clock_gettime
+ erl_wall_clock_id=$erl_cv_clock_gettime_wall_$1
+ for low_res_id in $low_resolution_clock_gettime_wall; do
+ if test $erl_wall_clock_id = $low_res_id; then
+ erl_wall_clock_low_resolution=yes
+ break
+ fi
+ done
+ ;;
+ *-no-*-yes-*)
+ erl_wall_clock_func=gettimeofday
+ ;;
+ *)
+ erl_wall_clock_func=none
+ ;;
+ esac
+])
+
dnl ----------------------------------------------------------------------
dnl
dnl LM_CHECK_THR_LIB
@@ -883,24 +1127,226 @@ AC_SUBST(ERTS_INTERNAL_X_LIBS)
])
-AC_DEFUN(ETHR_CHK_SYNC_OP,
+AC_DEFUN(ETHR_CHK_GCC_ATOMIC_OP__,
[
- AC_MSG_CHECKING([for $3-bit $1()])
- case "$2" in
- "1") sync_call="$1(&var);";;
- "2") sync_call="$1(&var, ($4) 0);";;
- "3") sync_call="$1(&var, ($4) 0, ($4) 0);";;
+ # $1 - atomic_op
+
+ for atomic_bit_size in 32 64 128; do
+ case $atomic_bit_size in
+ 32) gcc_atomic_type="$gcc_atomic_type32";;
+ 64) gcc_atomic_type="$gcc_atomic_type64";;
+ 128) gcc_atomic_type="$gcc_atomic_type128";;
+ esac
+ gcc_atomic_lockfree="int x[[(2*__atomic_always_lock_free(sizeof($gcc_atomic_type), 0))-1]]"
+ case $1 in
+ __sync_add_and_fetch | __sync_fetch_and_and | __sync_fetch_and_or)
+ atomic_call="volatile $gcc_atomic_type var; $gcc_atomic_type res = $1(&var, ($gcc_atomic_type) 0);"
+ ;;
+ __sync_val_compare_and_swap)
+ atomic_call="volatile $gcc_atomic_type var; $gcc_atomic_type res = $1(&var, ($gcc_atomic_type) 0, ($gcc_atomic_type) 0);"
+ ;;
+ __atomic_store_n)
+ atomic_call="$gcc_atomic_lockfree; volatile $gcc_atomic_type var; $1(&var, ($gcc_atomic_type) 0, __ATOMIC_RELAXED); $1(&var, ($gcc_atomic_type) 0, __ATOMIC_RELEASE);"
+ ;;
+ __atomic_load_n)
+ atomic_call="$gcc_atomic_lockfree; volatile $gcc_atomic_type var; $gcc_atomic_type res = $1(&var, __ATOMIC_RELAXED); res = $1(&var, __ATOMIC_ACQUIRE);"
+ ;;
+ __atomic_add_fetch| __atomic_fetch_and | __atomic_fetch_or)
+ atomic_call="$gcc_atomic_lockfree; volatile $gcc_atomic_type var; $gcc_atomic_type res = $1(&var, ($gcc_atomic_type) 0, __ATOMIC_RELAXED); res = $1(&var, ($gcc_atomic_type) 0, __ATOMIC_ACQUIRE); res = $1(&var, ($gcc_atomic_type) 0, __ATOMIC_RELEASE);"
+ ;;
+ __atomic_compare_exchange_n)
+ atomic_call="$gcc_atomic_lockfree; volatile $gcc_atomic_type var; $gcc_atomic_type val; int res = $1(&var, &val, ($gcc_atomic_type) 0, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED); res = $1(&var, &val, ($gcc_atomic_type) 0, 0, __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);"
+ ;;
+ *)
+ AC_MSG_ERROR([Internal error: missing implementation for $1])
+ ;;
+ esac
+ eval atomic${atomic_bit_size}_call=\"$atomic_call\"
+ done
+
+ AC_CACHE_CHECK([for 32-bit $1()], ethr_cv_32bit_$1,
+ [
+ ethr_cv_32bit_$1=no
+ AC_TRY_LINK([], [$atomic32_call], [ethr_cv_32bit_$1=yes])
+ ])
+ AC_CACHE_CHECK([for 64-bit $1()], ethr_cv_64bit_$1,
+ [
+ ethr_cv_64bit_$1=no
+ AC_TRY_LINK([], [$atomic64_call], [ethr_cv_64bit_$1=yes])
+ ])
+ AC_CACHE_CHECK([for 128-bit $1()], ethr_cv_128bit_$1,
+ [
+ ethr_cv_128bit_$1=no
+ AC_TRY_LINK([], [$atomic128_call], [ethr_cv_128bit_$1=yes])
+ ])
+
+ case $ethr_cv_128bit_$1-$ethr_cv_64bit_$1-$ethr_cv_32bit_$1 in
+ no-no-no)
+ have_atomic_ops=0;;
+ no-no-yes)
+ have_atomic_ops=4;;
+ no-yes-no)
+ have_atomic_ops=8;;
+ no-yes-yes)
+ have_atomic_ops=12;;
+ yes-no-no)
+ have_atomic_ops=16;;
+ yes-no-yes)
+ have_atomic_ops=20;;
+ yes-yes-no)
+ have_atomic_ops=24;;
+ yes-yes-yes)
+ have_atomic_ops=28;;
+ esac
+ AC_DEFINE_UNQUOTED([ETHR_HAVE_$1], [$have_atomic_ops], [Define as a bitmask corresponding to the word sizes that $1() can handle on your system])
+])
+
+AC_DEFUN(ETHR_CHK_IF_NOOP,
+[
+ ethr_test_filename="chk_if_$1$3_noop_config1test.$$"
+ cat > "${ethr_test_filename}.c" <<EOF
+int
+my_test(void)
+{
+ $1$2;
+ return 0;
+}
+EOF
+ $CC -O3 $ETHR_DEFS -c "${ethr_test_filename}.c" -o "${ethr_test_filename}1.o"
+ cat > "${ethr_test_filename}.c" <<EOF
+int
+my_test(void)
+{
+ ;
+ return 0;
+}
+EOF
+ $CC -O3 $ETHR_DEFS -c "${ethr_test_filename}.c" -o "${ethr_test_filename}2.o"
+ if diff "${ethr_test_filename}1.o" "${ethr_test_filename}2.o" >/dev/null 2>&1; then
+ ethr_$1$3_noop=yes
+ else
+ ethr_$1$3_noop=no
+ fi
+ rm -f "${ethr_test_filename}.c" "${ethr_test_filename}1.o" "${ethr_test_filename}2.o"
+])
+
+AC_DEFUN(ETHR_CHK_GCC_ATOMIC_OPS,
+[
+ AC_CHECK_SIZEOF(short)
+ AC_CHECK_SIZEOF(int)
+ AC_CHECK_SIZEOF(long)
+ AC_CHECK_SIZEOF(long long)
+ AC_CHECK_SIZEOF(__int128_t)
+
+ if test "$ac_cv_sizeof_short" = "4"; then
+ gcc_atomic_type32="short"
+ elif test "$ac_cv_sizeof_int" = "4"; then
+ gcc_atomic_type32="int"
+ elif test "$ac_cv_sizeof_long" = "4"; then
+ gcc_atomic_type32="long"
+ else
+ AC_MSG_ERROR([No 32-bit type found])
+ fi
+
+ if test "$ac_cv_sizeof_int" = "8"; then
+ gcc_atomic_type64="int"
+ elif test "$ac_cv_sizeof_long" = "8"; then
+ gcc_atomic_type64="long"
+ elif test "$ac_cv_sizeof_long_long" = "8"; then
+ gcc_atomic_type64="long long"
+ else
+ AC_MSG_ERROR([No 64-bit type found])
+ fi
+
+ if test "$ac_cv_sizeof___int128_t" = "16"; then
+ gcc_atomic_type128="__int128_t"
+ else
+ gcc_atomic_type128="#error "
+ fi
+ AC_CACHE_CHECK([for a working __sync_synchronize()], ethr_cv___sync_synchronize,
+ [
+ ethr_cv___sync_synchronize=no
+ AC_TRY_LINK([],
+ [ __sync_synchronize(); ],
+ [ethr_cv___sync_synchronize=yes])
+ if test $ethr_cv___sync_synchronize = yes; then
+ #
+ # Old gcc versions on at least x86 have a buggy
+ # __sync_synchronize() which does not emit a
+ # memory barrier. We try to detect this by
+ # compiling to assembly with and without
+ # __sync_synchronize() and compare the results.
+ #
+ ETHR_CHK_IF_NOOP(__sync_synchronize, [()], [])
+ if test $ethr___sync_synchronize_noop = yes; then
+ # Got a buggy implementation of
+ # __sync_synchronize...
+ ethr_cv___sync_synchronize="no; buggy implementation"
+ fi
+ fi
+ ])
+
+ if test "$ethr_cv___sync_synchronize" = "yes"; then
+ have_sync_synchronize_value="~0"
+ else
+ have_sync_synchronize_value="0"
+ fi
+ AC_DEFINE_UNQUOTED([ETHR_HAVE___sync_synchronize], [$have_sync_synchronize_value], [Define as a bitmask corresponding to the word sizes that __sync_synchronize() can handle on your system])
+
+ ETHR_CHK_GCC_ATOMIC_OP__(__sync_add_and_fetch)
+ ETHR_CHK_GCC_ATOMIC_OP__(__sync_fetch_and_and)
+ ETHR_CHK_GCC_ATOMIC_OP__(__sync_fetch_and_or)
+ ETHR_CHK_GCC_ATOMIC_OP__(__sync_val_compare_and_swap)
+
+ ETHR_CHK_GCC_ATOMIC_OP__(__atomic_store_n)
+ ETHR_CHK_GCC_ATOMIC_OP__(__atomic_load_n)
+ ETHR_CHK_GCC_ATOMIC_OP__(__atomic_add_fetch)
+ ETHR_CHK_GCC_ATOMIC_OP__(__atomic_fetch_and)
+ ETHR_CHK_GCC_ATOMIC_OP__(__atomic_fetch_or)
+ ETHR_CHK_GCC_ATOMIC_OP__(__atomic_compare_exchange_n)
+
+ ethr_have_gcc_native_atomics=no
+ ethr_arm_dbm_instr_val=0
+ case "$GCC-$host_cpu" in
+ yes-arm*)
+ AC_CACHE_CHECK([for ARM DMB instruction], ethr_cv_arm_dbm_instr,
+ [
+ ethr_cv_arm_dbm_instr=no
+ AC_TRY_LINK([],
+ [
+ __asm__ __volatile__("dmb sy" : : : "memory");
+ __asm__ __volatile__("dmb st" : : : "memory");
+ ],
+ [ethr_cv_arm_dbm_instr=yes])
+ ])
+ if test $ethr_cv_arm_dbm_instr = yes; then
+ ethr_arm_dbm_instr_val=1
+ test $ethr_cv_64bit___atomic_compare_exchange_n = yes &&
+ ethr_have_gcc_native_atomics=yes
+ fi;;
+ *)
+ ;;
esac
- have_sync_op=no
- AC_TRY_LINK([],
- [
- $4 res;
- volatile $4 var;
- res = $sync_call
- ],
- [have_sync_op=yes])
- test $have_sync_op = yes && $5
- AC_MSG_RESULT([$have_sync_op])
+ AC_DEFINE_UNQUOTED([ETHR_HAVE_GCC_ASM_ARM_DMB_INSTRUCTION], [$ethr_arm_dbm_instr_val], [Define as a boolean indicating whether you have a gcc compatible compiler capable of generating the ARM DMB instruction, and are compiling for an ARM processor with ARM DMB instruction support, or not])
+ test $ethr_cv_32bit___sync_val_compare_and_swap = yes &&
+ ethr_have_gcc_native_atomics=yes
+ test $ethr_cv_64bit___sync_val_compare_and_swap = yes &&
+ ethr_have_gcc_native_atomics=yes
+ if test "$ethr_cv___sync_synchronize" = "yes"; then
+ test $ethr_cv_64bit___atomic_compare_exchange_n = yes &&
+ ethr_have_gcc_native_atomics=yes
+ test $ethr_cv_32bit___atomic_compare_exchange_n = yes &&
+ ethr_have_gcc_native_atomics=yes
+ fi
+ ethr_have_gcc_atomic_builtins=0
+ if test $ethr_have_gcc_native_atomics = yes; then
+ ethr_native_atomic_implementation=gcc_sync
+ test $ethr_cv_32bit___atomic_compare_exchange_n = yes && ethr_have_gcc_atomic_builtins=1
+ test $ethr_cv_64bit___atomic_compare_exchange_n = yes && ethr_have_gcc_atomic_builtins=1
+ test $ethr_have_gcc_atomic_builtins = 1 && ethr_native_atomic_implementation=gcc_atomic_sync
+ fi
+ AC_DEFINE_UNQUOTED([ETHR_HAVE_GCC___ATOMIC_BUILTINS], [$ethr_have_gcc_atomic_builtins], [Define as a boolean indicating whether you have a gcc __atomic builtins or not])
+ test $ethr_have_gcc_native_atomics = yes && ethr_have_native_atomics=yes
])
AC_DEFUN(ETHR_CHK_INTERLOCKED,
@@ -954,15 +1400,80 @@ dnl
AC_DEFUN(ERL_FIND_ETHR_LIB,
[
+AC_ARG_ENABLE(native-ethr-impls,
+ AS_HELP_STRING([--disable-native-ethr-impls],
+ [disable native ethread implementations]),
+[ case "$enableval" in
+ no) disable_native_ethr_impls=yes ;;
+ *) disable_native_ethr_impls=no ;;
+ esac ], disable_native_ethr_impls=no)
+
+test "X$disable_native_ethr_impls" = "Xyes" &&
+ AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
+
+AC_ARG_ENABLE(x86-out-of-order,
+ AS_HELP_STRING([--enable-x86-out-of-order],
+ [enable x86/x84_64 out of order support (default disabled)]))
+
+AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
+ AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
+ [prefer gcc native ethread implementations]),
+[ case "$enableval" in
+ yes) enable_prefer_gcc_native_ethr_impls=yes ;;
+ *) enable_prefer_gcc_native_ethr_impls=no ;;
+ esac ], enable_prefer_gcc_native_ethr_impls=no)
+
+test $enable_prefer_gcc_native_ethr_impls = yes &&
+ AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
+
+AC_ARG_ENABLE(trust-gcc-atomic-builtins-memory-barriers,
+ AS_HELP_STRING([--enable-trust-gcc-atomic-builtins-memory-barriers],
+ [trust gcc atomic builtins memory barriers]),
+[ case "$enableval" in
+ yes) trust_gcc_atomic_builtins_mbs=1 ;;
+ *) trust_gcc_atomic_builtins_mbs=0 ;;
+ esac ], trust_gcc_atomic_builtins_mbs=0)
+
+AC_DEFINE_UNQUOTED(ETHR_TRUST_GCC_ATOMIC_BUILTINS_MEMORY_BARRIERS, [$trust_gcc_atomic_builtins_mbs], [Define as a boolean indicating whether you trust gcc's __atomic_* builtins memory barrier implementations, or not])
+
+AC_ARG_WITH(libatomic_ops,
+ AS_HELP_STRING([--with-libatomic_ops=PATH],
+ [specify and prefer usage of libatomic_ops in the ethread library]))
+
+AC_ARG_WITH(with_sparc_memory_order,
+ AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
+ [specify sparc memory order (defaults to RMO)]))
+
LM_CHECK_THR_LIB
ERL_INTERNAL_LIBS
+ERL_MONOTONIC_CLOCK(try_find_pthread_compatible, CLOCK_HIGHRES CLOCK_MONOTONIC, no)
+
+case $erl_monotonic_clock_func in
+ clock_gettime)
+ AC_DEFINE(ETHR_HAVE_CLOCK_GETTIME_MONOTONIC, [1], [Define if you have a clock_gettime() with a monotonic clock])
+ ;;
+ mach_clock_get_time)
+ AC_DEFINE(ETHR_HAVE_MACH_CLOCK_GET_TIME, [1], [Define if you have a mach clock_get_time() with a monotonic clock])
+ ;;
+ gethrtime)
+ AC_DEFINE(ETHR_HAVE_GETHRTIME, [1], [Define if you have a monotonic gethrtime()])
+ ;;
+ *)
+ ;;
+esac
+
+if test "x$erl_monotonic_clock_id" != "x"; then
+ AC_DEFINE_UNQUOTED(ETHR_MONOTONIC_CLOCK_ID, [$erl_monotonic_clock_id], [Define to the monotonic clock id to use])
+fi
+
+ethr_native_atomic_implementation=none
ethr_have_native_atomics=no
ethr_have_native_spinlock=no
ETHR_THR_LIB_BASE="$THR_LIB_NAME"
ETHR_THR_LIB_BASE_TYPE="$THR_LIB_TYPE"
ETHR_DEFS="$THR_DEFS"
-ETHR_X_LIBS="$THR_LIBS $ERTS_INTERNAL_X_LIBS"
+ETHR_X_LIBS="$THR_LIBS $ERTS_INTERNAL_X_LIBS $erl_monotonic_clock_lib"
ETHR_LIBS=
ETHR_LIB_NAME=
@@ -1003,46 +1514,53 @@ case "$THR_LIB_NAME" in
AC_DEFINE(ETHR_WIN32_THREADS, 1, [Define if you have win32 threads])
- ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
- ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
- ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
- ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
- ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
- ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
- ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
- ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
- ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
- test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
-
- ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
-
- test "$ethr_have_native_atomics" = "yes" && ethr_have_native_spinlock=yes
+ if test "X$disable_native_ethr_impls" = "Xyes"; then
+ have_interlocked_op=no
+ ethr_have_native_atomics=no
+ else
+ ETHR_CHK_INTERLOCKED([_InterlockedDecrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT, 1, [Define if you have _InterlockedDecrement()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedDecrement_rel], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT_REL, 1, [Define if you have _InterlockedDecrement_rel()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedIncrement], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT, 1, [Define if you have _InterlockedIncrement()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedIncrement_acq], [1], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT_ACQ, 1, [Define if you have _InterlockedIncrement_acq()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD, 1, [Define if you have _InterlockedExchangeAdd()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd_acq], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD_ACQ, 1, [Define if you have _InterlockedExchangeAdd_acq()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedAnd], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND, 1, [Define if you have _InterlockedAnd()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedOr], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR, 1, [Define if you have _InterlockedOr()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedExchange], [2], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE, 1, [Define if you have _InterlockedExchange()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE, 1, [Define if you have _InterlockedCompareExchange()]))
+ test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+ ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_acq], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_ACQ, 1, [Define if you have _InterlockedCompareExchange_acq()]))
+ test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+ ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange_rel], [3], [long], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE_REL, 1, [Define if you have _InterlockedCompareExchange_rel()]))
+ test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+ ETHR_CHK_INTERLOCKED([_InterlockedDecrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64, 1, [Define if you have _InterlockedDecrement64()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedDecrement64_rel], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDDECREMENT64_REL, 1, [Define if you have _InterlockedDecrement64_rel()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedIncrement64], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64, 1, [Define if you have _InterlockedIncrement64()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedIncrement64_acq], [1], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDINCREMENT64_ACQ, 1, [Define if you have _InterlockedIncrement64_acq()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64, 1, [Define if you have _InterlockedExchangeAdd64()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedExchangeAdd64_acq], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGEADD64_ACQ, 1, [Define if you have _InterlockedExchangeAdd64_acq()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedAnd64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDAND64, 1, [Define if you have _InterlockedAnd64()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedOr64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDOR64, 1, [Define if you have _InterlockedOr64()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedExchange64], [2], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDEXCHANGE64, 1, [Define if you have _InterlockedExchange64()]))
+ ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64, 1, [Define if you have _InterlockedCompareExchange64()]))
+ test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+ ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_acq], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_ACQ, 1, [Define if you have _InterlockedCompareExchange64_acq()]))
+ test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+ ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange64_rel], [3], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE64_REL, 1, [Define if you have _InterlockedCompareExchange64_rel()]))
+ test "$have_interlocked_op" = "yes" && ethr_have_native_atomics=yes
+
+ ETHR_CHK_INTERLOCKED([_InterlockedCompareExchange128], [4], [__int64], AC_DEFINE_UNQUOTED(ETHR_HAVE__INTERLOCKEDCOMPAREEXCHANGE128, 1, [Define if you have _InterlockedCompareExchange128()]))
+ fi
+ if test "$ethr_have_native_atomics" = "yes"; then
+ ethr_native_atomic_implementation=windows
+ ethr_have_native_spinlock=yes
+ fi
;;
pthread)
ETHR_THR_LIB_BASE_DIR=pthread
- AC_DEFINE(ETHR_PTHREADS, 1, [Define if you have pthreads])
+ AC_DEFINE(ETHR_PTHREADS, 1, [Define if you have pthreads])
case $host_os in
openbsd*)
# The default stack size is insufficient for our needs
@@ -1113,7 +1631,6 @@ case "$THR_LIB_NAME" in
dnl
dnl Check for headers
dnl
-
AC_CHECK_HEADER(pthread.h, \
AC_DEFINE(ETHR_HAVE_PTHREAD_H, 1, \
[Define if you have the <pthread.h> header file.]))
@@ -1146,7 +1663,6 @@ case "$THR_LIB_NAME" in
dnl
dnl Check for functions
dnl
-
AC_CHECK_FUNC(pthread_spin_lock, \
[ethr_have_native_spinlock=yes \
AC_DEFINE(ETHR_HAVE_PTHREAD_SPIN_LOCK, 1, \
@@ -1253,6 +1769,50 @@ case "$THR_LIB_NAME" in
AC_DEFINE(ETHR_HAVE_PTHREAD_ATTR_SETGUARDSIZE, 1, \
[Define if you have the pthread_attr_setguardsize function.]))
+ if test "x$erl_monotonic_clock_id" != "x"; then
+ AC_MSG_CHECKING(whether pthread_cond_timedwait() can use the monotonic clock $erl_monotonic_clock_id for timeout)
+ pthread_cond_timedwait_monotonic=no
+ AC_TRY_LINK([
+ #if defined(ETHR_NEED_NPTL_PTHREAD_H)
+ # include <nptl/pthread.h>
+ #elif defined(ETHR_HAVE_MIT_PTHREAD_H)
+ # include <pthread/mit/pthread.h>
+ #elif defined(ETHR_HAVE_PTHREAD_H)
+ # include <pthread.h>
+ #endif
+ #ifdef ETHR_TIME_WITH_SYS_TIME
+ # include <time.h>
+ # include <sys/time.h>
+ #else
+ # ifdef ETHR_HAVE_SYS_TIME_H
+ # include <sys/time.h>
+ # else
+ # include <time.h>
+ # endif
+ #endif
+ #if defined(ETHR_HAVE_MACH_CLOCK_GET_TIME)
+ # include <mach/clock.h>
+ # include <mach/mach.h>
+ #endif
+ ],
+ [
+ int res;
+ pthread_condattr_t attr;
+ pthread_cond_t cond;
+ struct timespec cond_timeout;
+ pthread_mutex_t mutex;
+ res = pthread_condattr_init(&attr);
+ res = pthread_condattr_setclock(&attr, ETHR_MONOTONIC_CLOCK_ID);
+ res = pthread_cond_init(&cond, &attr);
+ res = pthread_cond_timedwait(&cond, &mutex, &cond_timeout);
+ ],
+ [pthread_cond_timedwait_monotonic=yes])
+ AC_MSG_RESULT([$pthread_cond_timedwait_monotonic])
+ if test $pthread_cond_timedwait_monotonic = yes; then
+ AC_DEFINE(ETHR_HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC, [1], [Define if pthread_cond_timedwait() can be used with a monotonic clock])
+ fi
+ fi
+
linux_futex=no
AC_MSG_CHECKING([for Linux futexes])
AC_TRY_LINK([
@@ -1273,123 +1833,161 @@ case "$THR_LIB_NAME" in
AC_MSG_RESULT([$linux_futex])
test $linux_futex = yes && AC_DEFINE(ETHR_HAVE_LINUX_FUTEX, 1, [Define if you have a linux futex implementation.])
- AC_CHECK_SIZEOF(int)
- AC_CHECK_SIZEOF(long)
- AC_CHECK_SIZEOF(long long)
- AC_CHECK_SIZEOF(__int128_t)
-
- if test "$ac_cv_sizeof_int" = "4"; then
- int32="int"
- elif test "$ac_cv_sizeof_long" = "4"; then
- int32="long"
- elif test "$ac_cv_sizeof_long_long" = "4"; then
- int32="long long"
- else
- AC_MSG_ERROR([No 32-bit type found])
- fi
+ pthread_setname=no
+ AC_MSG_CHECKING([for pthread_setname_np])
+ old_CFLAGS=$CFLAGS
+ CFLAGS="$CFLAGS -Werror"
+ AC_TRY_LINK([#define __USE_GNU
+ #include <pthread.h>],
+ [pthread_setname_np(pthread_self(), "name");],
+ pthread_setname=linux)
+ AC_TRY_LINK([#define __USE_GNU
+ #include <pthread.h>],
+ [pthread_set_name_np(pthread_self(), "name");],
+ pthread_setname=bsd)
+ AC_TRY_LINK([#define _DARWIN_C_SOURCE
+ #include <pthread.h>],
+ [pthread_setname_np("name");],
+ pthread_setname=darwin)
+ AC_MSG_RESULT([$pthread_setname])
+ case $pthread_setname in
+ linux) AC_DEFINE(ETHR_HAVE_PTHREAD_SETNAME_NP_2, 1,
+ [Define if you have linux style pthread_setname_np]);;
+ bsd) AC_DEFINE(ETHR_HAVE_PTHREAD_SET_NAME_NP_2, 1,
+ [Define if you have bsd style pthread_set_name_np]);;
+ darwin) AC_DEFINE(ETHR_HAVE_PTHREAD_SETNAME_NP_1, 1,
+ [Define if you have darwin style pthread_setname_np]);;
+ *) ;;
+ esac
- if test "$ac_cv_sizeof_int" = "8"; then
- int64="int"
- elif test "$ac_cv_sizeof_long" = "8"; then
- int64="long"
- elif test "$ac_cv_sizeof_long_long" = "8"; then
- int64="long long"
- else
- AC_MSG_ERROR([No 64-bit type found])
- fi
+ pthread_getname=no
+ AC_MSG_CHECKING([for pthread_getname_np])
+ AC_TRY_LINK([#define __USE_GNU
+ #define _DARWIN_C_SOURCE
+ #include <pthread.h>],
+ [char buff[256]; pthread_getname_np(pthread_self(), buff, 256);],
+ pthread_getname=linux)
+ AC_TRY_LINK([#define __USE_GNU
+ #define _DARWIN_C_SOURCE
+ #include <pthread.h>],
+ [char buff[256]; pthread_getname_np(pthread_self(), buff);],
+ pthread_getname=ibm)
+ AC_MSG_RESULT([$pthread_getname])
+ case $pthread_getname in
+ linux) AC_DEFINE(ETHR_HAVE_PTHREAD_GETNAME_NP_3, 1,
+ [Define if you have linux style pthread_getname_np]);;
+ ibm) AC_DEFINE(ETHR_HAVE_PTHREAD_GETNAME_NP_2, 1,
+ [Define if you have ibm style pthread_getname_np]);;
+ *) ;;
+ esac
+ CFLAGS=$old_CFLAGS
- int128=no
- if test "$ac_cv_sizeof___int128_t" = "16"; then
- int128="__int128_t"
- fi
+ if test "X$disable_native_ethr_impls" = "Xyes"; then
+ ethr_have_native_atomics=no
+ else
- ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP32, 1, [Define if you have __sync_val_compare_and_swap() for 32-bit integers]))
- test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH32, 1, [Define if you have __sync_add_and_fetch() for 32-bit integers]))
- ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND32, 1, [Define if you have __sync_fetch_and_and() for 32-bit integers]))
- ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [32], [$int32], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR32, 1, [Define if you have __sync_fetch_and_or() for 32-bit integers]))
+ ETHR_CHK_GCC_ATOMIC_OPS([])
+
+ AC_MSG_CHECKING([for a usable libatomic_ops implementation])
+ case "x$with_libatomic_ops" in
+ xno | xyes | x)
+ libatomic_ops_include=
+ ;;
+ *)
+ if test -d "${with_libatomic_ops}/include"; then
+ libatomic_ops_include="-I$with_libatomic_ops/include"
+ CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
+ else
+ AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
+ fi;;
+ esac
+ ethr_have_libatomic_ops=no
+ AC_TRY_LINK([#include "atomic_ops.h"],
+ [
+ volatile AO_t x;
+ AO_t y;
+ int z;
+
+ AO_nop_full();
+#if defined(AO_HAVE_store)
+ AO_store(&x, (AO_t) 0);
+#elif defined(AO_HAVE_store_release)
+ AO_store_release(&x, (AO_t) 0);
+#else
+#error No store
+#endif
+#if defined(AO_HAVE_load)
+ z = AO_load(&x);
+#elif defined(AO_HAVE_load_acquire)
+ z = AO_load_acquire(&x);
+#else
+#error No load
+#endif
+#if defined(AO_HAVE_compare_and_swap_full)
+ z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
+#elif defined(AO_HAVE_compare_and_swap_release)
+ z = AO_compare_and_swap_release(&x, (AO_t) 0, (AO_t) 1);
+#elif defined(AO_HAVE_compare_and_swap_acquire)
+ z = AO_compare_and_swap_acquire(&x, (AO_t) 0, (AO_t) 1);
+#elif defined(AO_HAVE_compare_and_swap)
+ z = AO_compare_and_swap(&x, (AO_t) 0, (AO_t) 1);
+#else
+#error No compare_and_swap
+#endif
+ ],
+ [ethr_have_native_atomics=yes
+ ethr_native_atomic_implementation=libatomic_ops
+ ethr_have_libatomic_ops=yes])
+ AC_MSG_RESULT([$ethr_have_libatomic_ops])
+ if test $ethr_have_libatomic_ops = yes; then
+ AC_CHECK_SIZEOF(AO_t, ,
+ [
+ #include <stdio.h>
+ #include "atomic_ops.h"
+ ])
+ AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
+
+ AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
+ if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+ AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
+ fi
+ ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
+ elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
+ AC_MSG_ERROR([No usable libatomic_ops implementation found])
+ fi
- ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP64, 1, [Define if you have __sync_val_compare_and_swap() for 64-bit integers]))
- test "$have_sync_op" = "yes" && ethr_have_native_atomics=yes
- ETHR_CHK_SYNC_OP([__sync_add_and_fetch], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_ADD_AND_FETCH64, 1, [Define if you have __sync_add_and_fetch() for 64-bit integers]))
- ETHR_CHK_SYNC_OP([__sync_fetch_and_and], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_AND64, 1, [Define if you have __sync_fetch_and_and() for 64-bit integers]))
- ETHR_CHK_SYNC_OP([__sync_fetch_and_or], [2], [64], [$int64], AC_DEFINE(ETHR_HAVE___SYNC_FETCH_AND_OR64, 1, [Define if you have __sync_fetch_and_or() for 64-bit integers]))
+ case "$host_cpu" in
+ sparc | sun4u | sparc64 | sun4v)
+ case "$with_sparc_memory_order" in
+ "TSO")
+ AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
+ "PSO")
+ AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
+ "RMO"|"")
+ AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
+ *)
+ AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
+ esac
+ ethr_native_atomic_implementation=ethread
+ ethr_have_native_atomics=yes;;
+ i86pc | i*86 | x86_64 | amd64)
+ if test "$enable_x86_out_of_order" = "yes"; then
+ AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
+ fi
+ ethr_native_atomic_implementation=ethread
+ ethr_have_native_atomics=yes;;
+ macppc | ppc | powerpc | "Power Macintosh")
+ ethr_native_atomic_implementation=ethread
+ ethr_have_native_atomics=yes;;
+ tile)
+ ethr_native_atomic_implementation=ethread
+ ethr_have_native_atomics=yes;;
+ *)
+ ;;
+ esac
- if test $int128 != no; then
- ETHR_CHK_SYNC_OP([__sync_val_compare_and_swap], [3], [128], [$int128], AC_DEFINE(ETHR_HAVE___SYNC_VAL_COMPARE_AND_SWAP128, 1, [Define if you have __sync_val_compare_and_swap() for 128-bit integers]))
fi
- AC_MSG_CHECKING([for a usable libatomic_ops implementation])
- case "x$with_libatomic_ops" in
- xno | xyes | x)
- libatomic_ops_include=
- ;;
- *)
- if test -d "${with_libatomic_ops}/include"; then
- libatomic_ops_include="-I$with_libatomic_ops/include"
- CPPFLAGS="$CPPFLAGS $libatomic_ops_include"
- else
- AC_MSG_ERROR([libatomic_ops include directory $with_libatomic_ops/include not found])
- fi;;
- esac
- ethr_have_libatomic_ops=no
- AC_TRY_LINK([#include "atomic_ops.h"],
- [
- volatile AO_t x;
- AO_t y;
- int z;
-
- AO_nop_full();
- AO_store(&x, (AO_t) 0);
- z = AO_load(&x);
- z = AO_compare_and_swap_full(&x, (AO_t) 0, (AO_t) 1);
- ],
- [ethr_have_native_atomics=yes
- ethr_have_libatomic_ops=yes])
- AC_MSG_RESULT([$ethr_have_libatomic_ops])
- if test $ethr_have_libatomic_ops = yes; then
- AC_CHECK_SIZEOF(AO_t, ,
- [
- #include <stdio.h>
- #include "atomic_ops.h"
- ])
- AC_DEFINE_UNQUOTED(ETHR_SIZEOF_AO_T, $ac_cv_sizeof_AO_t, [Define to the size of AO_t if libatomic_ops is used])
-
- AC_DEFINE(ETHR_HAVE_LIBATOMIC_OPS, 1, [Define if you have libatomic_ops atomic operations])
- if test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
- AC_DEFINE(ETHR_PREFER_LIBATOMIC_OPS_NATIVE_IMPLS, 1, [Define if you prefer libatomic_ops native ethread implementations])
- fi
- ETHR_DEFS="$ETHR_DEFS $libatomic_ops_include"
- elif test "x$with_libatomic_ops" != "xno" && test "x$with_libatomic_ops" != "x"; then
- AC_MSG_ERROR([No usable libatomic_ops implementation found])
- fi
-
- case "$host_cpu" in
- sparc | sun4u | sparc64 | sun4v)
- case "$with_sparc_memory_order" in
- "TSO")
- AC_DEFINE(ETHR_SPARC_TSO, 1, [Define if only run in Sparc TSO mode]);;
- "PSO")
- AC_DEFINE(ETHR_SPARC_PSO, 1, [Define if only run in Sparc PSO, or TSO mode]);;
- "RMO"|"")
- AC_DEFINE(ETHR_SPARC_RMO, 1, [Define if run in Sparc RMO, PSO, or TSO mode]);;
- *)
- AC_MSG_ERROR([Unsupported Sparc memory order: $with_sparc_memory_order]);;
- esac
- ethr_have_native_atomics=yes;;
- i86pc | i*86 | x86_64 | amd64)
- if test "$enable_x86_out_of_order" = "yes"; then
- AC_DEFINE(ETHR_X86_OUT_OF_ORDER, 1, [Define if x86/x86_64 out of order instructions should be synchronized])
- fi
- ethr_have_native_atomics=yes;;
- macppc | ppc | "Power Macintosh")
- ethr_have_native_atomics=yes;;
- tile)
- ethr_have_native_atomics=yes;;
- *)
- ;;
- esac
-
test ethr_have_native_atomics = "yes" && ethr_have_native_spinlock=yes
dnl Restore LIBS
@@ -1451,40 +2049,6 @@ esac
AC_C_DOUBLE_MIDDLE_ENDIAN
-AC_ARG_ENABLE(native-ethr-impls,
- AS_HELP_STRING([--disable-native-ethr-impls],
- [disable native ethread implementations]),
-[ case "$enableval" in
- no) disable_native_ethr_impls=yes ;;
- *) disable_native_ethr_impls=no ;;
- esac ], disable_native_ethr_impls=no)
-
-AC_ARG_ENABLE(x86-out-of-order,
- AS_HELP_STRING([--enable-x86-out-of-order],
- [enable x86/x84_64 out of order support (default disabled)]))
-
-test "X$disable_native_ethr_impls" = "Xyes" &&
- AC_DEFINE(ETHR_DISABLE_NATIVE_IMPLS, 1, [Define if you want to disable native ethread implementations])
-
-AC_ARG_ENABLE(prefer-gcc-native-ethr-impls,
- AS_HELP_STRING([--enable-prefer-gcc-native-ethr-impls],
- [prefer gcc native ethread implementations]),
-[ case "$enableval" in
- yes) enable_prefer_gcc_native_ethr_impls=yes ;;
- *) enable_prefer_gcc_native_ethr_impls=no ;;
- esac ], enable_prefer_gcc_native_ethr_impls=no)
-
-test $enable_prefer_gcc_native_ethr_impls = yes &&
- AC_DEFINE(ETHR_PREFER_GCC_NATIVE_IMPLS, 1, [Define if you prefer gcc native ethread implementations])
-
-AC_ARG_WITH(libatomic_ops,
- AS_HELP_STRING([--with-libatomic_ops=PATH],
- [specify and prefer usage of libatomic_ops in the ethread library]))
-
-AC_ARG_WITH(with_sparc_memory_order,
- AS_HELP_STRING([--with-sparc-memory-order=TSO|PSO|RMO],
- [specify sparc memory order (defaults to RMO)]))
-
ETHR_X86_SSE2_ASM=no
case "$GCC-$ac_cv_sizeof_void_p-$host_cpu" in
yes-4-i86pc | yes-4-i*86 | yes-4-x86_64 | yes-4-amd64)
@@ -1511,63 +2075,159 @@ esac
case "$GCC-$host_cpu" in
yes-i86pc | yes-i*86 | yes-x86_64 | yes-amd64)
+
+ if test $ac_cv_sizeof_void_p = 4; then
+ dw_cmpxchg="cmpxchg8b"
+ else
+ dw_cmpxchg="cmpxchg16b"
+ fi
+
gcc_dw_cmpxchg_asm=no
- AC_MSG_CHECKING([for gcc double word cmpxchg asm support])
- AC_TRY_COMPILE([],
+ gcc_pic_dw_cmpxchg_asm=no
+ gcc_cflags_pic=no
+ gcc_cmpxchg8b_pic_no_clobber_ebx=no
+ gcc_cmpxchg8b_pic_no_clobber_ebx_register_shortage=no
+
+ save_CFLAGS="$CFLAGS"
+
+ # Check if it works out of the box using passed CFLAGS
+ # and with -fPIC added to CFLAGS if the passed CFLAGS
+ # doesn't trigger position independent code
+ pic_cmpxchg=unknown
+ while true; do
+
+ case $pic_cmpxchg in
+ yes) pic_text="pic ";;
+ *) pic_text="";;
+ esac
+
+ AC_MSG_CHECKING([for gcc $pic_text$dw_cmpxchg plain asm support])
+
+ plain_cmpxchg=no
+ AC_TRY_COMPILE([],
[
char xchgd;
long new[2], xchg[2], *p;
__asm__ __volatile__(
-#if ETHR_SIZEOF_PTR == 4 && defined(__PIC__) && __PIC__
- "pushl %%ebx\n\t"
- "movl %8, %%ebx\n\t"
-#endif
#if ETHR_SIZEOF_PTR == 4
"lock; cmpxchg8b %0\n\t"
#else
"lock; cmpxchg16b %0\n\t"
#endif
"setz %3\n\t"
-#if ETHR_SIZEOF_PTR == 4 && defined(__PIC__) && __PIC__
- "popl %%ebx\n\t"
-#endif
- : "=m"(*p), "=d"(xchg[1]), "=a"(xchg[0]), "=c"(xchgd)
- : "m"(*p), "1"(xchg[1]), "2"(xchg[0]), "3"(new[1]),
-#if ETHR_SIZEOF_PTR == 4 && defined(__PIC__) && __PIC__
- "r"(new[0])
-#else
- "b"(new[0])
-#endif
+ : "=m"(*p), "=d"(xchg[1]), "=a"(xchg[0]), "=q"(xchgd)
+ : "m"(*p), "1"(xchg[1]), "2"(xchg[0]), "c"(new[1]), "b"(new[0])
: "cc", "memory");
+ ],
+ [plain_cmpxchg=yes])
+
+ AC_MSG_RESULT([$plain_cmpxchg])
+
+ if test $pic_cmpxchg = yes; then
+ gcc_pic_dw_cmpxchg_asm=$plain_cmpxchg
+ break
+ fi
+
+ gcc_dw_cmpxchg_asm=$plain_cmpxchg
+ # If not already compiling to position independent
+ # code add -fPIC to CFLAGS and do it again. This
+ # since we want also want to know how to compile
+ # to position independent code since this might
+ # cause problems with the use of the EBX register
+ # as input to the asm on 32-bit x86 and old gcc
+ # compilers (gcc vsn < 5).
+
+ AC_TRY_COMPILE([],
+ [
+#if !defined(__PIC__) || !__PIC__
+# error no pic
+#endif
],
- [gcc_dw_cmpxchg_asm=yes])
- if test $gcc_dw_cmpxchg_asm = no && test $ac_cv_sizeof_void_p = 4; then
+ [pic_cmpxchg=yes
+ gcc_cflags_pic=yes],
+ [pic_cmpxchg=no])
+
+ if test $pic_cmpxchg = yes; then
+ gcc_pic_dw_cmpxchg_asm=$gcc_dw_cmpxchg_asm
+ break
+ fi
+
+ CFLAGS="$save_CFLAGS -fPIC"
+ pic_cmpxchg=yes
+
+ done
+
+ if test $gcc_pic_dw_cmpxchg_asm = no && test $ac_cv_sizeof_void_p = 4; then
+
+ AC_MSG_CHECKING([for gcc pic cmpxchg8b asm support with EBX workaround])
+
+ # Check if we can work around it by managing the ebx
+ # register explicitly in the asm...
+
AC_TRY_COMPILE([],
+ [
+ char xchgd;
+ long new[2], xchg[2], *p;
+ __asm__ __volatile__(
+ "pushl %%ebx\n\t"
+ "movl %8, %%ebx\n\t"
+ "lock; cmpxchg8b %0\n\t"
+ "setz %3\n\t"
+ "popl %%ebx\n\t"
+ : "=m"(*p), "=d"(xchg[1]), "=a"(xchg[0]), "=q"(xchgd)
+ : "m"(*p), "1"(xchg[1]), "2"(xchg[0]), "c"(new[1]), "r"(new[0])
+ : "cc", "memory");
+ ],
+ [gcc_pic_dw_cmpxchg_asm=yes
+ gcc_cmpxchg8b_pic_no_clobber_ebx=yes])
+
+ AC_MSG_RESULT([$gcc_pic_dw_cmpxchg_asm])
+
+ if test $gcc_pic_dw_cmpxchg_asm = no; then
+
+ AC_MSG_CHECKING([for gcc pic cmpxchg8b asm support with EBX and register shortage workarounds])
+ # If no optimization is enabled we sometimes get a
+ # register shortage. Check if we can work around
+ # this...
+
+ AC_TRY_COMPILE([],
[
char xchgd;
long new[2], xchg[2], *p;
-#if !defined(__PIC__) || !__PIC__
-# error nope
-#endif
__asm__ __volatile__(
- "pushl %%ebx\n\t"
- "movl (%7), %%ebx\n\t"
- "movl 4(%7), %%ecx\n\t"
- "lock; cmpxchg8b %0\n\t"
- "setz %3\n\t"
- "popl %%ebx\n\t"
- : "=m"(*p), "=d"(xchg[1]), "=a"(xchg[0]), "=c"(xchgd)
- : "m"(*p), "1"(xchg[1]), "2"(xchg[0]), "3"(new)
+ "pushl %%ebx\n\t"
+ "movl (%7), %%ebx\n\t"
+ "movl 4(%7), %%ecx\n\t"
+ "lock; cmpxchg8b %0\n\t"
+ "setz %3\n\t"
+ "popl %%ebx\n\t"
+ : "=m"(*p), "=d"(xchg[1]), "=a"(xchg[0]), "=c"(xchgd)
+ : "m"(*p), "1"(xchg[1]), "2"(xchg[0]), "r"(new)
: "cc", "memory");
],
- [gcc_dw_cmpxchg_asm=yes])
- if test "$gcc_dw_cmpxchg_asm" = "yes"; then
- AC_DEFINE(ETHR_CMPXCHG8B_REGISTER_SHORTAGE, 1, [Define if you get a register shortage with cmpxchg8b and position independent code])
+ [gcc_pic_dw_cmpxchg_asm=yes
+ gcc_cmpxchg8b_pic_no_clobber_ebx=yes
+ gcc_cmpxchg8b_pic_no_clobber_ebx_register_shortage=yes])
+
+ AC_MSG_RESULT([$gcc_pic_dw_cmpxchg_asm])
fi
+
+ if test $gcc_cflags_pic = yes; then
+ gcc_dw_cmpxchg_asm=$gcc_pic_dw_cmpxchg_asm
+ fi
+
+ fi
+
+ CFLAGS="$save_CFLAGS"
+
+ if test "$gcc_cmpxchg8b_pic_no_clobber_ebx" = "yes"; then
+ AC_DEFINE(ETHR_CMPXCHG8B_PIC_NO_CLOBBER_EBX, 1, [Define if gcc wont let you clobber ebx with cmpxchg8b and position independent code])
+ fi
+ if test "$gcc_cmpxchg8b_pic_no_clobber_ebx_register_shortage" = "yes"; then
+ AC_DEFINE(ETHR_CMPXCHG8B_REGISTER_SHORTAGE, 1, [Define if you get a register shortage with cmpxchg8b and position independent code])
fi
- AC_MSG_RESULT([$gcc_dw_cmpxchg_asm])
if test "$gcc_dw_cmpxchg_asm" = "yes"; then
AC_DEFINE(ETHR_GCC_HAVE_DW_CMPXCHG_ASM_SUPPORT, 1, [Define if you use a gcc that supports the double word cmpxchg instruction])
fi;;
@@ -1589,109 +2249,233 @@ AC_SUBST(ETHR_X86_SSE2_ASM)
])
-
dnl ----------------------------------------------------------------------
dnl
dnl ERL_TIME_CORRECTION
dnl
-dnl In the presence of a high resolution realtime timer Erlang can adapt
-dnl its view of time relative to this timer. On solaris such a timer is
-dnl available with the syscall gethrtime(). On other OS's a fallback
-dnl solution using times() is implemented. (However on e.g. FreeBSD times()
-dnl is implemented using gettimeofday so it doesn't make much sense to
-dnl use it there...) On second thought, it seems to be safer to do it the
-dnl other way around. I.e. only use times() on OS's where we know it will
-dnl work...
+dnl Check for primitives that can be used for implementing
+dnl erts_os_monotonic_time() and erts_os_system_time()
dnl
AC_DEFUN(ERL_TIME_CORRECTION,
-[if test x$ac_cv_func_gethrtime = x; then
- AC_CHECK_FUNC(gethrtime)
-fi
-if test x$clock_gettime_correction = xunknown; then
- AC_TRY_COMPILE([#include <time.h>],
- [struct timespec ts;
- long long result;
- clock_gettime(CLOCK_MONOTONIC,&ts);
- result = ((long long) ts.tv_sec) * 1000000000LL +
- ((long long) ts.tv_nsec);],
- clock_gettime_compiles=yes,
- clock_gettime_compiles=no)
-else
- clock_gettime_compiles=no
+[
+
+AC_ARG_WITH(clock-resolution,
+AS_HELP_STRING([--with-clock-resolution=high|low|default],
+ [specify wanted clock resolution]))
+
+AC_ARG_WITH(clock-gettime-realtime-id,
+AS_HELP_STRING([--with-clock-gettime-realtime-id=CLOCKID],
+ [specify clock id to use with clock_gettime() for realtime time)]))
+
+AC_ARG_WITH(clock-gettime-monotonic-id,
+AS_HELP_STRING([--with-clock-gettime-monotonic-id=CLOCKID],
+ [specify clock id to use with clock_gettime() for monotonic time)]))
+
+AC_ARG_ENABLE(prefer-elapsed-monotonic-time-during-suspend,
+AS_HELP_STRING([--enable-prefer-elapsed-monotonic-time-during-suspend],
+ [Prefer an OS monotonic time source with elapsed time during suspend])
+AS_HELP_STRING([--disable-prefer-elapsed-monotonic-time-during-suspend],
+ [Do not prefer an OS monotonic time source with elapsed time during suspend]),
+[ case "$enableval" in
+ yes) prefer_elapsed_monotonic_time_during_suspend=yes ;;
+ *) prefer_elapsed_monotonic_time_during_suspend=no ;;
+ esac ], prefer_elapsed_monotonic_time_during_suspend=no)
+
+AC_ARG_ENABLE(gettimeofday-as-os-system-time,
+ AS_HELP_STRING([--enable-gettimeofday-as-os-system-time],
+ [Force usage of gettimeofday() for OS system time]),
+[ case "$enableval" in
+ yes) force_gettimeofday_os_system_time=yes ;;
+ *) force_gettimeofday_os_system_time=no ;;
+ esac ], force_gettimeofday_os_system_time=no)
+
+case "$with_clock_resolution" in
+ ""|no|yes)
+ with_clock_resolution=default;;
+ high|low|default)
+ ;;
+ *)
+ AC_MSG_ERROR([Invalid wanted clock resolution: $with_clock_resolution])
+ ;;
+esac
+
+if test "$force_gettimeofday_os_system_time" = "yes"; then
+
+ AC_CHECK_FUNCS([gettimeofday])
+ if test "$ac_cv_func_gettimeofday" = "yes"; then
+ AC_DEFINE(OS_SYSTEM_TIME_GETTIMEOFDAY, [1], [Define if you want to implement erts_os_system_time() using gettimeofday()])
+ else
+ AC_MSG_ERROR([No gettimeofday() available])
+ fi
+
+else # $force_gettimeofday_os_system_time != yes
+
+case "$with_clock_gettime_realtime_id" in
+ ""|no)
+ with_clock_gettime_realtime_id=no
+ ;;
+ CLOCK_*CPUTIME*)
+ AC_MSG_ERROR([Invalid clock_gettime() realtime clock id: Refusing to use the cputime clock id $with_clock_gettime_realtime_id as realtime clock id])
+ ;;
+ CLOCK_MONOTONIC*|CLOCK_BOOTTIME*|CLOCK_UPTIME*|CLOCK_HIGHRES*)
+ AC_MSG_ERROR([Invalid clock_gettime() realtime clock id: Refusing to use the monotonic clock id $with_clock_gettime_realtime_id as realtime clock id])
+ ;;
+ CLOCK_*)
+ ;;
+ *)
+ AC_MSG_ERROR([Invalid clock_gettime() clock id: $with_clock_gettime_realtime_id])
+ ;;
+esac
+
+case "$with_clock_resolution-$with_clock_gettime_realtime_id" in
+ high-no)
+ ERL_WALL_CLOCK(high_resolution);;
+ low-no)
+ ERL_WALL_CLOCK(low_resolution);;
+ default-no)
+ ERL_WALL_CLOCK(default_resolution);;
+ *)
+ ERL_WALL_CLOCK(custom_resolution, $with_clock_gettime_realtime_id);;
+esac
+
+case "$erl_wall_clock_func-$erl_wall_clock_id-$with_clock_gettime_realtime_id" in
+ *-*-no)
+ ;;
+ clock_gettime-$with_clock_gettime_realtime_id-$with_clock_gettime_realtime_id)
+ ;;
+ *)
+ AC_MSG_ERROR([$with_clock_gettime_realtime_id as clock id to clock_gettime() doesn't compile])
+ ;;
+esac
+
+case $erl_wall_clock_func in
+ none)
+ AC_MSG_ERROR([No wall clock source found])
+ ;;
+ mach_clock_get_time)
+ AC_DEFINE(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME, [1], [Define if you want to implement erts_os_system_time() using mach clock_get_time()])
+ ;;
+ clock_gettime)
+ AC_DEFINE(OS_SYSTEM_TIME_USING_CLOCK_GETTIME, [1], [Define if you want to implement erts_os_system_time() using clock_gettime()])
+ ;;
+ gettimeofday)
+ AC_DEFINE(OS_SYSTEM_TIME_GETTIMEOFDAY, [1], [Define if you want to implement erts_os_system_time() using gettimeofday()])
+ ;;
+ *)
+ ;;
+esac
+
+if test "x$erl_wall_clock_id" != "x"; then
+ AC_DEFINE_UNQUOTED(WALL_CLOCK_ID_STR, ["$erl_wall_clock_id"], [Define as a string of wall clock id to use])
+ AC_DEFINE_UNQUOTED(WALL_CLOCK_ID, [$erl_wall_clock_id], [Define to wall clock id to use])
fi
-
-AC_CACHE_CHECK([how to correct for time adjustments], erl_cv_time_correction,
-[
-case $clock_gettime_correction in
- yes)
- erl_cv_time_correction=clock_gettime;;
- no|unknown)
- case $ac_cv_func_gethrtime in
- yes)
- erl_cv_time_correction=hrtime ;;
- no)
- case $host_os in
- linux*)
- case $clock_gettime_correction in
- unknown)
- if test x$clock_gettime_compiles = xyes; then
- if test X$cross_compiling != Xyes; then
- linux_kernel_vsn_=`uname -r`
- case $linux_kernel_vsn_ in
- [[0-1]].*|2.[[0-5]]|2.[[0-5]].*)
- erl_cv_time_correction=times ;;
- *)
- erl_cv_time_correction=clock_gettime;;
- esac
- else
- case X$erl_xcomp_linux_clock_gettime_correction in
- X)
- erl_cv_time_correction=cross;;
- Xyes|Xno)
- if test $erl_xcomp_linux_clock_gettime_correction = yes; then
- erl_cv_time_correction=clock_gettime
- else
- erl_cv_time_correction=times
- fi;;
- *)
- AC_MSG_ERROR([Bad erl_xcomp_linux_clock_gettime_correction value: $erl_xcomp_linux_clock_gettime_correction]);;
- esac
- fi
- else
- erl_cv_time_correction=times
- fi
- ;;
- *)
- erl_cv_time_correction=times ;;
- esac
- ;;
- *)
- erl_cv_time_correction=none ;;
- esac
- ;;
- esac
- ;;
+fi # $force_gettimeofday_os_system_time != yes
+
+case "$with_clock_gettime_monotonic_id" in
+ ""|no)
+ with_clock_gettime_monotonic_id=no
+ ;;
+ CLOCK_*CPUTIME*)
+ AC_MSG_ERROR([Invalid clock_gettime() monotonic clock id: Refusing to use the cputime clock id $with_clock_gettime_monotonic_id as monotonic clock id])
+ ;;
+ CLOCK_REALTIME*|CLOCK_TAI*)
+ AC_MSG_ERROR([Invalid clock_gettime() monotonic clock id: Refusing to use the realtime clock id $with_clock_gettime_monotonic_id as monotonic clock id])
+ ;;
+ CLOCK_*)
+ ;;
+ *)
+ AC_MSG_ERROR([Invalid clock_gettime() clock id: $with_clock_gettime_monotonic_id])
+ ;;
+esac
+
+case "$with_clock_resolution-$with_clock_gettime_monotonic_id" in
+ high-no)
+ ERL_MONOTONIC_CLOCK(high_resolution, undefined, $prefer_elapsed_monotonic_time_during_suspend);;
+ low-no)
+ ERL_MONOTONIC_CLOCK(low_resolution, undefined, $prefer_elapsed_monotonic_time_during_suspend);;
+ default-no)
+ ERL_MONOTONIC_CLOCK(default_resolution, undefined, $prefer_elapsed_monotonic_time_during_suspend);;
+ *)
+ ERL_MONOTONIC_CLOCK(custom_resolution, $with_clock_gettime_monotonic_id, $prefer_elapsed_monotonic_time_during_suspend);;
esac
-])
-xrtlib=""
-case $erl_cv_time_correction in
+case "$erl_monotonic_clock_func-$erl_monotonic_clock_id-$with_clock_gettime_monotonic_id" in
+ *-*-no)
+ ;;
+ clock_gettime-$with_clock_gettime_monotonic_id-$with_clock_gettime_monotonic_id)
+ ;;
+ *)
+ AC_MSG_ERROR([$with_clock_gettime_monotonic_id as clock id to clock_gettime() doesn't compile])
+ ;;
+esac
+
+case $erl_monotonic_clock_func in
times)
- AC_DEFINE(CORRECT_USING_TIMES,[],
- [Define if you do not have a high-res. timer & want to use times() instead])
+ AC_DEFINE(OS_MONOTONIC_TIME_USING_TIMES, [1], [Define if you want to implement erts_os_monotonic_time() using times()])
;;
- clock_gettime|cross)
- if test $erl_cv_time_correction = cross; then
- erl_cv_time_correction=clock_gettime
- AC_MSG_WARN([result clock_gettime guessed because of cross compilation])
- fi
- xrtlib="-lrt"
- AC_DEFINE(GETHRTIME_WITH_CLOCK_GETTIME,[1],
- [Define if you want to use clock_gettime to simulate gethrtime])
+ mach_clock_get_time)
+ AC_DEFINE(OS_MONOTONIC_TIME_USING_MACH_CLOCK_GET_TIME, [1], [Define if you want to implement erts_os_monotonic_time() using mach clock_get_time()])
+ ;;
+ clock_gettime)
+ AC_DEFINE(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME, [1], [Define if you want to implement erts_os_monotonic_time() using clock_gettime()])
+ ;;
+ gethrtime)
+ AC_DEFINE(OS_MONOTONIC_TIME_USING_GETHRTIME, [1], [Define if you want to implement erts_os_monotonic_time() using gethrtime()])
+ ;;
+ *)
;;
esac
+
+if test $erl_corrected_monotonic_clock = yes; then
+ AC_DEFINE(ERTS_HAVE_CORRECTED_OS_MONOTONIC_TIME, [1], [Define if OS monotonic clock is corrected])
+fi
+
+if test $erl_monotonic_clock_low_resolution = yes; then
+ AC_DEFINE(ERTS_HAVE_LOW_RESOLUTION_OS_MONOTONIC_LOW, [1], [Define if you have a low resolution OS monotonic clock])
+fi
+
+xrtlib="$erl_monotonic_clock_lib"
+if test "x$erl_monotonic_clock_id" != "x"; then
+ AC_DEFINE_UNQUOTED(MONOTONIC_CLOCK_ID_STR, ["$erl_monotonic_clock_id"], [Define as a string of monotonic clock id to use])
+ AC_DEFINE_UNQUOTED(MONOTONIC_CLOCK_ID, [$erl_monotonic_clock_id], [Define to monotonic clock id to use])
+fi
+
+if test $erl_cv_clock_gettime_monotonic_raw = yes; then
+ AC_DEFINE(HAVE_CLOCK_GETTIME_MONOTONIC_RAW, [1], [Define if you have clock_gettime(CLOCK_MONOTONIC_RAW, _)])
+fi
+
+ERL_MONOTONIC_CLOCK(high_resolution, undefined, no)
+
+case $$erl_monotonic_clock_low_resolution-$erl_monotonic_clock_func in
+ no-mach_clock_get_time)
+ monotonic_hrtime=yes
+ AC_DEFINE(SYS_HRTIME_USING_MACH_CLOCK_GET_TIME, [1], [Define if you want to implement erts_os_hrtime() using mach clock_get_time()])
+ ;;
+ no-clock_gettime)
+ monotonic_hrtime=yes
+ AC_DEFINE(SYS_HRTIME_USING_CLOCK_GETTIME, [1], [Define if you want to implement erts_os_hrtime() using clock_gettime()])
+ ;;
+ no-gethrtime)
+ monotonic_hrtime=yes
+ AC_DEFINE(SYS_HRTIME_USING_GETHRTIME, [1], [Define if you want to implement erts_os_hrtime() using gethrtime()])
+ ;;
+ *)
+ monotonic_hrtime=no
+ ;;
+esac
+
+if test $monotonic_hrtime = yes; then
+ AC_DEFINE(HAVE_MONOTONIC_ERTS_SYS_HRTIME, [1], [Define if you have a monotonic erts_os_hrtime() implementation])
+fi
+
+if test "x$erl_monotonic_clock_id" != "x"; then
+ AC_DEFINE_UNQUOTED(HRTIME_CLOCK_ID_STR, ["$erl_monotonic_clock_id"], [Define as a string of monotonic clock id to use])
+ AC_DEFINE_UNQUOTED(HRTIME_CLOCK_ID, [$erl_monotonic_clock_id], [Define to monotonic clock id to use])
+fi
+
+
dnl
dnl Check if gethrvtime is working, and if to use procfs ioctl
dnl or (yet to be written) write to the procfs ctl file.
@@ -1764,6 +2548,7 @@ case X$erl_xcomp_gethrvtime_procfs_ioctl in
esac
])
+LIBRT=$xrtlib
case $erl_gethrvtime in
procfs_ioctl)
AC_DEFINE(HAVE_GETHRVTIME_PROCFS_IOCTL,[1],
@@ -1810,43 +2595,33 @@ case $erl_gethrvtime in
exit(0); return 0;
}
],
- erl_clock_gettime=yes,
- erl_clock_gettime=no,
+ erl_clock_gettime_cpu_time=yes,
+ erl_clock_gettime_cpu_time=no,
[
case X$erl_xcomp_clock_gettime_cpu_time in
- X) erl_clock_gettime=cross;;
- Xyes|Xno) erl_clock_gettime=$erl_xcomp_clock_gettime_cpu_time;;
+ X) erl_clock_gettime_cpu_time=cross;;
+ Xyes|Xno) erl_clock_gettime_cpu_time=$erl_xcomp_clock_gettime_cpu_time;;
*) AC_MSG_ERROR([Bad erl_xcomp_clock_gettime_cpu_time value: $erl_xcomp_clock_gettime_cpu_time]);;
esac
])
LIBS=$save_libs
- case $host_os in
- linux*)
- AC_MSG_RESULT([no; not stable])
- LIBRT=$xrtlib
+ AC_MSG_RESULT($erl_clock_gettime_cpu_time)
+ case $erl_clock_gettime_cpu_time in
+ yes)
+ AC_DEFINE(HAVE_CLOCK_GETTIME_CPU_TIME,[],
+ [define if clock_gettime() works for getting process time])
+ LIBRT=-lrt
+ ;;
+ cross)
+ erl_clock_gettime_cpu_time=no
+ AC_MSG_WARN([result no guessed because of cross compilation])
;;
*)
- AC_MSG_RESULT($erl_clock_gettime)
- case $erl_clock_gettime in
- yes)
- AC_DEFINE(HAVE_CLOCK_GETTIME,[],
- [define if clock_gettime() works for getting process time])
- LIBRT=-lrt
- ;;
- cross)
- erl_clock_gettime=no
- AC_MSG_WARN([result no guessed because of cross compilation])
- LIBRT=$xrtlib
- ;;
- *)
- LIBRT=$xrtlib
- ;;
- esac
;;
esac
- AC_SUBST(LIBRT)
;;
esac
+AC_SUBST(LIBRT)
])dnl
dnl ----------------------------------------------------------------------
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 00:03:45 +0000