aboutsummaryrefslogtreecommitdiffstats
path: root/erts
diff options
context:
space:
mode:
Diffstat (limited to 'erts')
-rw-r--r--erts/doc/src/erlang.xml53
-rw-r--r--erts/emulator/Makefile.in3
-rw-r--r--erts/emulator/beam/atom.names9
-rw-r--r--erts/emulator/beam/beam_emu.c79
-rw-r--r--erts/emulator/beam/beam_load.c86
-rw-r--r--erts/emulator/beam/bif.tab34
-rw-r--r--erts/emulator/beam/binary.c57
-rw-r--r--erts/emulator/beam/erl_alloc.types1
-rw-r--r--erts/emulator/beam/erl_bif_binary.c2930
-rw-r--r--erts/emulator/beam/erl_bif_guard.c37
-rw-r--r--erts/emulator/beam/erl_bif_info.c11
-rw-r--r--erts/emulator/beam/erl_binary.h25
-rw-r--r--erts/emulator/beam/erl_init.c1
-rw-r--r--erts/emulator/beam/erl_nif.c4
-rw-r--r--erts/emulator/beam/erl_vm.h3
-rw-r--r--erts/emulator/beam/global.h6
-rw-r--r--erts/emulator/beam/ops.tab33
-rw-r--r--erts/emulator/test/Makefile3
-rw-r--r--erts/emulator/test/guard_SUITE.erl179
19 files changed, 3492 insertions, 62 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index cd9bb85f5c..e90160dfd7 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -253,6 +253,54 @@ iolist() = [char() | binary() | iolist()]
</desc>
</func>
<func>
+ <name>binary_part(Subject, PosLen) -> binary()</name>
+ <fsummary>Extracts a part of a binary</fsummary>
+ <type>
+ <v>Subject = binary()</v>
+ <v>PosLen = {Start,Length}</v>
+ <v>Start = int()</v>
+ <v>Length = int()</v>
+ </type>
+ <desc>
+ <p>Extracts the part of the binary described by <c>PosLen</c>.</p>
+
+ <p>Negative length can be used to extract bytes at the end of a binary:</p>
+
+<code>
+1> Bin = &lt;&lt;1,2,3,4,5,6,7,8,9,10&gt;&gt;.
+2> binary_part(Bin,{byte_size(Bin), -5)).
+&lt;&lt;6,7,8,9,10&gt;&gt;
+</code>
+
+ <p>If <c>PosLen</c> in any way references outside the binary, a <c>badarg</c> exception is raised.</p>
+
+ <p><c>Start</c> is zero-based, i.e:</p>
+<code>
+1> Bin = &lt;&lt;1,2,3&gt;&gt;
+2> binary_part(Bin,{0,2}).
+&lt;&lt;1,2&gt;&gt;
+</code>
+
+ <p>See the STDLIB module <c>binary</c> for details about the <c>PosLen</c> semantics.</p>
+
+ <p>Allowed in guard tests.</p>
+ </desc>
+ </func>
+ <func>
+ <name>binary_part(Subject, Start, Length) -> binary()</name>
+ <fsummary>Extracts a part of a binary</fsummary>
+ <type>
+ <v>Subject = binary()</v>
+ <v>Start = int()</v>
+ <v>Length = int()</v>
+ </type>
+ <desc>
+ <p>The same as <c>binary_part(Subject, {Pos, Len})</c>.</p>
+
+ <p>Allowed in guard tests.</p>
+ </desc>
+ </func>
+ <func>
<name>binary_to_atom(Binary, Encoding) -> atom()</name>
<fsummary>Convert from text representation to an atom</fsummary>
<type>
@@ -318,6 +366,11 @@ iolist() = [char() | binary() | iolist()]
corresponding to the bytes from position <c>Start</c> to
position <c>Stop</c> in <c>Binary</c>. Positions in the
binary are numbered starting from 1.</p>
+
+ <note><p>This functions indexing style of using one-based indices for
+ binaries is deprecated. New code should use the functions in
+ the STDLIB module <c>binary</c> instead. They consequently
+ use the same (zero-based) style of indexing.</p></note>
</desc>
</func>
<func>
diff --git a/erts/emulator/Makefile.in b/erts/emulator/Makefile.in
index 9f10a0ffaa..d767194d4d 100644
--- a/erts/emulator/Makefile.in
+++ b/erts/emulator/Makefile.in
@@ -735,7 +735,8 @@ RUN_OBJS = \
$(OBJDIR)/erl_drv_thread.o $(OBJDIR)/erl_bif_chksum.o \
$(OBJDIR)/erl_bif_re.o $(OBJDIR)/erl_unicode.o \
$(OBJDIR)/packet_parser.o $(OBJDIR)/safe_hash.o \
- $(OBJDIR)/erl_zlib.o $(OBJDIR)/erl_nif.o
+ $(OBJDIR)/erl_zlib.o $(OBJDIR)/erl_nif.o \
+ $(OBJDIR)/erl_bif_binary.o
ifeq ($(TARGET),win32)
DRV_OBJS = \
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index 9ce21089ba..1138c0c871 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -65,6 +65,7 @@ atom EXIT='EXIT'
atom aborted
atom abs_path
atom absoluteURI
+atom ac
atom active
atom all
atom all_but_first
@@ -100,8 +101,15 @@ atom band
atom big
atom bif_return_trap
atom binary
+atom binary_bin_to_list_trap
+atom binary_copy_trap
+atom binary_longest_prefix_trap
+atom binary_longest_suffix_trap
+atom binary_match_trap
+atom binary_matches_trap
atom block
atom blocked
+atom bm
atom bnot
atom bor
atom bxor
@@ -454,6 +462,7 @@ atom scheduler
atom scheduler_id
atom schedulers_online
atom scheme
+atom scope
atom sensitive
atom sequential_tracer
atom sequential_trace_token
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index ee8ba54cb8..f0b04535dd 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -2026,6 +2026,81 @@ void process_main(void)
goto post_error_handling;
}
+ OpCase(i_gc_bif2_jIId): /* Note, one less parameter than the i_gc_bif1
+ and i_gc_bif3 */
+ {
+ typedef Eterm (*GcBifFunction)(Process*, Eterm*, Uint);
+ GcBifFunction bf;
+ Eterm result;
+ Uint live = (Uint) Arg(2);
+
+ reg[0] = r(0);
+ reg[live++] = tmp_arg1;
+ reg[live] = tmp_arg2;
+ bf = (GcBifFunction) Arg(1);
+ c_p->fcalls = FCALLS;
+ SWAPOUT;
+ PROCESS_MAIN_CHK_LOCKS(c_p);
+ ERTS_SMP_UNREQ_PROC_MAIN_LOCK(c_p);
+ result = (*bf)(c_p, reg, live);
+ ERTS_SMP_REQ_PROC_MAIN_LOCK(c_p);
+ PROCESS_MAIN_CHK_LOCKS(c_p);
+ SWAPIN;
+ r(0) = reg[0];
+ ERTS_HOLE_CHECK(c_p);
+ FCALLS = c_p->fcalls;
+ if (is_value(result)) {
+ StoreBifResult(3, result);
+ }
+ if (Arg(0) != 0) {
+ SET_I((BeamInstr *) Arg(0));
+ Goto(*I);
+ }
+ reg[0] = tmp_arg1;
+ reg[1] = tmp_arg2;
+ I = handle_error(c_p, I, reg, translate_gc_bif((void *) bf));
+ goto post_error_handling;
+ }
+
+ OpCase(i_gc_bif3_jIsId):
+ {
+ typedef Eterm (*GcBifFunction)(Process*, Eterm*, Uint);
+ GcBifFunction bf;
+ Eterm arg;
+ Eterm result;
+ Uint live = (Uint) Arg(3);
+
+ GetArg1(2, arg);
+ reg[0] = r(0);
+ reg[live++] = arg;
+ reg[live++] = tmp_arg1;
+ reg[live] = tmp_arg2;
+ bf = (GcBifFunction) Arg(1);
+ c_p->fcalls = FCALLS;
+ SWAPOUT;
+ PROCESS_MAIN_CHK_LOCKS(c_p);
+ ERTS_SMP_UNREQ_PROC_MAIN_LOCK(c_p);
+ result = (*bf)(c_p, reg, live);
+ ERTS_SMP_REQ_PROC_MAIN_LOCK(c_p);
+ PROCESS_MAIN_CHK_LOCKS(c_p);
+ SWAPIN;
+ r(0) = reg[0];
+ ERTS_HOLE_CHECK(c_p);
+ FCALLS = c_p->fcalls;
+ if (is_value(result)) {
+ StoreBifResult(4, result);
+ }
+ if (Arg(0) != 0) {
+ SET_I((BeamInstr *) Arg(0));
+ Goto(*I);
+ }
+ reg[0] = arg;
+ reg[1] = tmp_arg1;
+ reg[2] = tmp_arg2;
+ I = handle_error(c_p, I, reg, translate_gc_bif((void *) bf));
+ goto post_error_handling;
+ }
+
/*
* Guards bifs and, or, xor in guards.
*/
@@ -4986,6 +5061,10 @@ translate_gc_bif(void* gcf)
return round_1;
} else if (gcf == erts_gc_trunc_1) {
return round_1;
+ } else if (gcf == erts_gc_binary_part_2) {
+ return binary_part_2;
+ } else if (gcf == erts_gc_binary_part_3) {
+ return binary_part_3;
} else {
erl_exit(1, "bad gc bif");
}
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 5e4375fc96..597f604e22 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -486,9 +486,6 @@ static GenOp* const_select_val(LoaderState* stp, GenOpArg S, GenOpArg Fail,
GenOpArg Size, GenOpArg* Rest);
static GenOp* gen_func_info(LoaderState* stp, GenOpArg mod, GenOpArg Func,
GenOpArg arity, GenOpArg label);
-static GenOp*
-gen_guard_bif(LoaderState* stp, GenOpArg Fail, GenOpArg Live, GenOpArg Bif,
- GenOpArg Src, GenOpArg Dst);
static int freeze_code(LoaderState* stp);
@@ -3358,9 +3355,15 @@ gen_make_fun2(LoaderState* stp, GenOpArg idx)
op->next = NULL;
return op;
}
-
+/*
+ * Rewrite gc_bifs with one parameter (the common case). Utilized
+ * in ops.tab to rewrite instructions calling bif's in guards
+ * to use a garbage collecting implementation. The instructions
+ * are sometimes once again rewritten to handle literals (putting the
+ * parameter in the mostly unused r[0] before the instruction is executed).
+ */
static GenOp*
-gen_guard_bif(LoaderState* stp, GenOpArg Fail, GenOpArg Live, GenOpArg Bif,
+gen_guard_bif1(LoaderState* stp, GenOpArg Fail, GenOpArg Live, GenOpArg Bif,
GenOpArg Src, GenOpArg Dst)
{
GenOp* op;
@@ -3372,6 +3375,8 @@ gen_guard_bif(LoaderState* stp, GenOpArg Fail, GenOpArg Live, GenOpArg Bif,
op->a[0] = Fail;
op->a[1].type = TAG_u;
bf = stp->import[Bif.val].bf;
+ /* The translations here need to have a reverse counterpart in
+ beam_emu.c:translate_gc_bif for error handling to work properly. */
if (bf == length_1) {
op->a[1].val = (BeamInstr) (void *) erts_gc_length_1;
} else if (bf == size_1) {
@@ -3398,6 +3403,77 @@ gen_guard_bif(LoaderState* stp, GenOpArg Fail, GenOpArg Live, GenOpArg Bif,
return op;
}
+/*
+ * This is used by the ops.tab rule that rewrites gc_bifs with two parameters
+ * The instruction returned is then again rewritten to an i_load instruction
+ * folowed by i_gc_bif2_jIId, to handle literals properly.
+ * As opposed to the i_gc_bif1_jIsId, the instruction i_gc_bif2_jIId is
+ * always rewritten, regardless of if there actually are any literals.
+ */
+static GenOp*
+gen_guard_bif2(LoaderState* stp, GenOpArg Fail, GenOpArg Live, GenOpArg Bif,
+ GenOpArg S1, GenOpArg S2, GenOpArg Dst)
+{
+ GenOp* op;
+ BifFunction bf;
+
+ NEW_GENOP(stp, op);
+ op->op = genop_ii_gc_bif2_6;
+ op->arity = 6;
+ op->a[0] = Fail;
+ op->a[1].type = TAG_u;
+ bf = stp->import[Bif.val].bf;
+ /* The translations here need to have a reverse counterpart in
+ beam_emu.c:translate_gc_bif for error handling to work properly. */
+ if (bf == binary_part_2) {
+ op->a[1].val = (BeamInstr) (void *) erts_gc_binary_part_2;
+ } else {
+ abort();
+ }
+ op->a[2] = S1;
+ op->a[3] = S2;
+ op->a[4] = Live;
+ op->a[5] = Dst;
+ op->next = NULL;
+ return op;
+}
+
+/*
+ * This is used by the ops.tab rule that rewrites gc_bifs with three parameters
+ * The instruction returned is then again rewritten to a move instruction that
+ * uses r[0] for temp storage, followed by an i_load instruction,
+ * folowed by i_gc_bif3_jIsId, to handle literals properly. Rewriting
+ * always occur, as with the gc_bif2 counterpart.
+ */
+static GenOp*
+gen_guard_bif3(LoaderState* stp, GenOpArg Fail, GenOpArg Live, GenOpArg Bif,
+ GenOpArg S1, GenOpArg S2, GenOpArg S3, GenOpArg Dst)
+{
+ GenOp* op;
+ BifFunction bf;
+
+ NEW_GENOP(stp, op);
+ op->op = genop_ii_gc_bif3_7;
+ op->arity = 7;
+ op->a[0] = Fail;
+ op->a[1].type = TAG_u;
+ bf = stp->import[Bif.val].bf;
+ /* The translations here need to have a reverse counterpart in
+ beam_emu.c:translate_gc_bif for error handling to work properly. */
+ if (bf == binary_part_3) {
+ op->a[1].val = (BeamInstr) (void *) erts_gc_binary_part_3;
+ } else {
+ abort();
+ }
+ op->a[2] = S1;
+ op->a[3] = S2;
+ op->a[4] = S3;
+ op->a[5] = Live;
+ op->a[6] = Dst;
+ op->next = NULL;
+ return op;
+}
+
/*
* Freeze the code in memory, move the string table into place,
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab
index b6fa06354a..9feb302a3d 100644
--- a/erts/emulator/beam/bif.tab
+++ b/erts/emulator/beam/bif.tab
@@ -760,6 +760,40 @@ bif erlang:finish_after_on_load/2
bif erlang:binary_to_term/2
#
+# The binary match bifs (New in R14A - EEP9)
+#
+
+#
+# The searching/splitting/substituting thingies
+#
+ubif erlang:binary_part/2
+ubif erlang:binary_part/3
+
+bif binary:compile_pattern/1
+bif binary:match/2
+bif binary:match/3
+bif binary:matches/2
+bif binary:matches/3
+bif binary:longest_common_prefix/1
+bif binary:longest_common_suffix/1
+bif binary:first/1
+bif binary:last/1
+bif binary:at/2
+bif binary:part/2 binary_binary_part_2
+bif binary:part/3 binary_binary_part_3
+bif binary:bin_to_list/1
+bif binary:bin_to_list/2
+bif binary:bin_to_list/3
+bif binary:list_to_bin/1
+bif binary:copy/1
+bif binary:copy/2
+bif binary:referenced_byte_size/1
+bif binary:encode_unsigned/1
+bif binary:encode_unsigned/2
+bif binary:decode_unsigned/1
+bif binary:decode_unsigned/2
+
+#
# Obsolete
#
diff --git a/erts/emulator/beam/binary.c b/erts/emulator/beam/binary.c
index 59c20398d5..c68392fad4 100644
--- a/erts/emulator/beam/binary.c
+++ b/erts/emulator/beam/binary.c
@@ -180,7 +180,7 @@ erts_realloc_binary(Eterm bin, size_t size)
}
byte*
-erts_get_aligned_binary_bytes_extra(Eterm bin, byte** base_ptr, unsigned extra)
+erts_get_aligned_binary_bytes_extra(Eterm bin, byte** base_ptr, ErtsAlcType_t allocator, unsigned extra)
{
byte* bytes;
Eterm* real_bin;
@@ -208,7 +208,7 @@ erts_get_aligned_binary_bytes_extra(Eterm bin, byte** base_ptr, unsigned extra)
bytes = (byte *)(&(((ErlHeapBin *) real_bin)->data)) + offs;
}
if (bit_offs) {
- byte* buf = (byte *) erts_alloc(ERTS_ALC_T_TMP, byte_size + extra);
+ byte* buf = (byte *) erts_alloc(allocator, byte_size + extra);
*base_ptr = buf;
buf += extra;
erts_copy_bits(bytes, bit_offs, 1, buf, 0, 1, byte_size*8);
@@ -346,29 +346,40 @@ BIF_RETTYPE bitstring_to_list_1(BIF_ALIST_1)
/* Turn a possibly deep list of ints (and binaries) into */
/* One large binary object */
-BIF_RETTYPE list_to_binary_1(BIF_ALIST_1)
+/*
+ * This bif also exists in the binary module, under the name
+ * binary:list_to_bin/1, why it's divided into interface and
+ * implementation. Also the backend for iolist_to_binary_1.
+ */
+
+BIF_RETTYPE erts_list_to_binary_bif(Process *p, Eterm arg)
{
Eterm bin;
int i;
int offset;
byte* bytes;
- if (is_nil(BIF_ARG_1)) {
- BIF_RET(new_binary(BIF_P,(byte*)"",0));
+ if (is_nil(arg)) {
+ BIF_RET(new_binary(p,(byte*)"",0));
}
- if (is_not_list(BIF_ARG_1)) {
+ if (is_not_list(arg)) {
goto error;
}
- if ((i = io_list_len(BIF_ARG_1)) < 0) {
+ if ((i = io_list_len(arg)) < 0) {
goto error;
}
- bin = new_binary(BIF_P, (byte *)NULL, i);
+ bin = new_binary(p, (byte *)NULL, i);
bytes = binary_bytes(bin);
- offset = io_list_to_buf(BIF_ARG_1, (char*) bytes, i);
+ offset = io_list_to_buf(arg, (char*) bytes, i);
ASSERT(offset == 0);
BIF_RET(bin);
- error:
- BIF_ERROR(BIF_P, BADARG);
+ error:
+ BIF_ERROR(p, BADARG);
+}
+
+BIF_RETTYPE list_to_binary_1(BIF_ALIST_1)
+{
+ return erts_list_to_binary_bif(BIF_P, BIF_ARG_1);
}
/* Turn a possibly deep list of ints (and binaries) into */
@@ -376,31 +387,10 @@ BIF_RETTYPE list_to_binary_1(BIF_ALIST_1)
BIF_RETTYPE iolist_to_binary_1(BIF_ALIST_1)
{
- Eterm bin;
- int i;
- int offset;
- byte* bytes;
-
if (is_binary(BIF_ARG_1)) {
BIF_RET(BIF_ARG_1);
}
- if (is_nil(BIF_ARG_1)) {
- BIF_RET(new_binary(BIF_P,(byte*)"",0));
- }
- if (is_not_list(BIF_ARG_1)) {
- goto error;
- }
- if ((i = io_list_len(BIF_ARG_1)) < 0) {
- goto error;
- }
- bin = new_binary(BIF_P, (byte *)NULL, i);
- bytes = binary_bytes(bin);
- offset = io_list_to_buf(BIF_ARG_1, (char*) bytes, i);
- ASSERT(offset == 0);
- BIF_RET(bin);
-
- error:
- BIF_ERROR(BIF_P, BADARG);
+ return erts_list_to_binary_bif(BIF_P, BIF_ARG_1);
}
BIF_RETTYPE list_to_bitstring_1(BIF_ALIST_1)
@@ -675,3 +665,4 @@ bitstr_list_len(Eterm obj)
DESTROY_ESTACK(s);
return (Sint) -1;
}
+
diff --git a/erts/emulator/beam/erl_alloc.types b/erts/emulator/beam/erl_alloc.types
index 5d2872a4e3..6f88bbe5b8 100644
--- a/erts/emulator/beam/erl_alloc.types
+++ b/erts/emulator/beam/erl_alloc.types
@@ -232,6 +232,7 @@ type RE_SUBJECT SHORT_LIVED SYSTEM re_subject
type RE_HEAP STANDARD SYSTEM re_heap
type RE_STACK SHORT_LIVED SYSTEM re_stack
type UNICODE_BUFFER SHORT_LIVED SYSTEM unicode_buffer
+type BINARY_BUFFER SHORT_LIVED SYSTEM binary_buffer
type PRE_ALLOC_DATA LONG_LIVED SYSTEM pre_alloc_data
type DRV_THR_OPTS DRIVER SYSTEM driver_thread_opts
type DRV_TID DRIVER SYSTEM driver_tid
diff --git a/erts/emulator/beam/erl_bif_binary.c b/erts/emulator/beam/erl_bif_binary.c
new file mode 100644
index 0000000000..8071d94d07
--- /dev/null
+++ b/erts/emulator/beam/erl_bif_binary.c
@@ -0,0 +1,2930 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+/*
+ * NOTE: This file contains the BIF's for the *module* binary in stdlib.
+ * other BIF's concerning binaries are in binary.c.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "sys.h"
+#include "erl_vm.h"
+#include "global.h"
+#include "erl_process.h"
+#include "error.h"
+#include "bif.h"
+#include "big.h"
+#include "erl_binary.h"
+#include "erl_bits.h"
+
+
+/*
+ * The native implementation functions for the module binary.
+ * Searching is implemented using aither Boyer-More or Aho-Corasick
+ * depending on number of searchstrings (BM if one, AC if more than one).
+ * Native implementation is mostly for efficiency, nothing
+ * (except binary:referenced_byte_size) really *needs* to be implemented
+ * in native code.
+ */
+
+/* #define HARDDEBUG */
+
+/* Init and local variables */
+
+static Export binary_match_trap_export;
+static BIF_RETTYPE binary_match_trap(BIF_ALIST_3);
+static Export binary_matches_trap_export;
+static BIF_RETTYPE binary_matches_trap(BIF_ALIST_3);
+static Export binary_longest_prefix_trap_export;
+static BIF_RETTYPE binary_longest_prefix_trap(BIF_ALIST_3);
+static Export binary_longest_suffix_trap_export;
+static BIF_RETTYPE binary_longest_suffix_trap(BIF_ALIST_3);
+static Export binary_bin_to_list_trap_export;
+static BIF_RETTYPE binary_bin_to_list_trap(BIF_ALIST_3);
+static Export binary_copy_trap_export;
+static BIF_RETTYPE binary_copy_trap(BIF_ALIST_2);
+static Uint max_loop_limit;
+
+
+void erts_init_bif_binary(void)
+{
+ sys_memset((void *) &binary_match_trap_export, 0, sizeof(Export));
+ binary_match_trap_export.address = &binary_match_trap_export.code[3];
+ binary_match_trap_export.code[0] = am_erlang;
+ binary_match_trap_export.code[1] = am_binary_match_trap;
+ binary_match_trap_export.code[2] = 3;
+ binary_match_trap_export.code[3] = (BeamInstr) em_apply_bif;
+ binary_match_trap_export.code[4] = (BeamInstr) &binary_match_trap;
+
+ sys_memset((void *) &binary_matches_trap_export, 0, sizeof(Export));
+ binary_matches_trap_export.address = &binary_matches_trap_export.code[3];
+ binary_matches_trap_export.code[0] = am_erlang;
+ binary_matches_trap_export.code[1] = am_binary_matches_trap;
+ binary_matches_trap_export.code[2] = 3;
+ binary_matches_trap_export.code[3] = (BeamInstr) em_apply_bif;
+ binary_matches_trap_export.code[4] = (BeamInstr) &binary_matches_trap;
+
+ sys_memset((void *) &binary_longest_prefix_trap_export, 0, sizeof(Export));
+ binary_longest_prefix_trap_export.address = &binary_longest_prefix_trap_export.code[3];
+ binary_longest_prefix_trap_export.code[0] = am_erlang;
+ binary_longest_prefix_trap_export.code[1] = am_binary_longest_prefix_trap;
+ binary_longest_prefix_trap_export.code[2] = 3;
+ binary_longest_prefix_trap_export.code[3] = (BeamInstr) em_apply_bif;
+ binary_longest_prefix_trap_export.code[4] = (BeamInstr) &binary_longest_prefix_trap;
+
+ sys_memset((void *) &binary_longest_suffix_trap_export, 0, sizeof(Export));
+ binary_longest_suffix_trap_export.address = &binary_longest_suffix_trap_export.code[3];
+ binary_longest_suffix_trap_export.code[0] = am_erlang;
+ binary_longest_suffix_trap_export.code[1] = am_binary_longest_suffix_trap;
+ binary_longest_suffix_trap_export.code[2] = 3;
+ binary_longest_suffix_trap_export.code[3] = (BeamInstr) em_apply_bif;
+ binary_longest_suffix_trap_export.code[4] = (BeamInstr) &binary_longest_suffix_trap;
+
+ sys_memset((void *) &binary_bin_to_list_trap_export, 0, sizeof(Export));
+ binary_bin_to_list_trap_export.address = &binary_bin_to_list_trap_export.code[3];
+ binary_bin_to_list_trap_export.code[0] = am_erlang;
+ binary_bin_to_list_trap_export.code[1] = am_binary_bin_to_list_trap;
+ binary_bin_to_list_trap_export.code[2] = 3;
+ binary_bin_to_list_trap_export.code[3] = (BeamInstr) em_apply_bif;
+ binary_bin_to_list_trap_export.code[4] = (BeamInstr) &binary_bin_to_list_trap;
+ sys_memset((void *) &binary_copy_trap_export, 0, sizeof(Export));
+ binary_copy_trap_export.address = &binary_copy_trap_export.code[3];
+ binary_copy_trap_export.code[0] = am_erlang;
+ binary_copy_trap_export.code[1] = am_binary_copy_trap;
+ binary_copy_trap_export.code[2] = 2;
+ binary_copy_trap_export.code[3] = (BeamInstr) em_apply_bif;
+ binary_copy_trap_export.code[4] = (BeamInstr) &binary_copy_trap;
+
+ max_loop_limit = 0;
+ return;
+}
+
+/*
+ * Setting the loop_limit for searches for debugging
+ */
+Sint erts_binary_set_loop_limit(Sint limit)
+{
+ Sint save = (Sint) max_loop_limit;
+ if (limit <= 0) {
+ max_loop_limit = 0;
+ } else {
+ max_loop_limit = (Uint) limit;
+ }
+
+ return save;
+}
+
+static Uint get_reds(Process *p, int loop_factor)
+{
+ Uint reds = ERTS_BIF_REDS_LEFT(p) * loop_factor;
+ Uint tmp = max_loop_limit;
+ if (tmp != 0 && tmp < reds) {
+ return tmp;
+ }
+ if (!reds) {
+ reds = 1;
+ }
+ return reds;
+}
+
+/*
+ * A micro allocator used when building search structures, just a convenience
+ * for building structures inside a pre alocated magic binary using
+ * conventional malloc-like interface.
+ */
+
+#define MYALIGN(Size) (SIZEOF_VOID_P * (((Size) / SIZEOF_VOID_P) + \
+ !!(((Size) % SIZEOF_VOID_P))))
+
+#ifdef DEBUG
+#define CHECK_ALLOCATOR(My) ASSERT((My).current <= ((My).mem + (My).size))
+#else
+#define CHECK_ALLOCATOR(My) /* nothing */
+#endif
+
+typedef struct _my_allocator {
+ Uint size;
+ byte *current;
+ byte *mem;
+} MyAllocator;
+
+static void init_my_allocator(MyAllocator *my, Uint siz, byte *array)
+{
+ ASSERT((siz % SIZEOF_VOID_P) == 0);
+ my->size = siz;
+ my->mem = array;
+ my->current = my->mem;
+}
+
+static void *my_alloc(MyAllocator *my, Uint size)
+{
+ void *ptr = my->current;
+ my->current += MYALIGN(size);
+ return ptr;
+}
+
+/*
+ * The search functionality.
+ *
+ * The search is byte oriented, which works nicely for UTF-8 as well as
+ * latin1 data
+ */
+
+#define ALPHABET_SIZE 256
+
+typedef struct _ac_node {
+#ifdef HARDDEBUG
+ Uint32 id; /* To identify h pointer targets when
+ dumping */
+#endif
+ Uint32 d; /* Depth in trie, also represents the
+ length (-1) of the matched string if
+ in final set */
+ Sint32 final; /* Members in final set represent
+ * matches.
+ * The set representation is scattered
+ * among the nodes in this way:
+ * >0 -> this represents a member of
+ * the final set, <0 -> member of
+ * final set somewhere in the failure
+ * chain,
+ * 0 -> not member of the final set */
+ struct _ac_node *h; /* h(Hode) is the failure function */
+ struct _ac_node *g[ALPHABET_SIZE]; /* g(Node,Character) is the
+ transition function */
+} ACNode;
+
+typedef struct _ac_trie {
+#ifdef HARDDEBUG
+ Uint32 idc;
+#endif
+ Uint32 counter; /* Number of added patterns */
+ ACNode *root; /* pointer to the root state */
+} ACTrie;
+
+typedef struct _bm_data {
+ byte *x;
+ Sint len;
+ Sint *goodshift;
+ Sint badshift[ALPHABET_SIZE];
+} BMData;
+
+#ifdef HARDDEBUG
+static void dump_bm_data(BMData *bm);
+static void dump_ac_trie(ACTrie *act);
+static void dump_ac_node(ACNode *node, int indent, int ch);
+#endif
+
+/*
+ * The needed size of binary data for a search structure - given the
+ * accumulated string lengths.
+ */
+#define BM_SIZE(StrLen) /* StrLen: length of searchstring */ \
+((MYALIGN(sizeof(Sint) * (StrLen))) + /* goodshift array */ \
+ MYALIGN(StrLen) + /* searchstring saved */ \
+ (MYALIGN(sizeof(BMData)))) /* Structure */
+
+#define AC_SIZE(StrLens) /* StrLens: sum of all searchstring lengths */ \
+((MYALIGN(sizeof(ACNode)) * \
+((StrLens)+1)) + /* The actual nodes (including rootnode) */ \
+ MYALIGN(sizeof(ACTrie))) /* Structure */
+
+
+#ifndef MAX
+#define MAX(A,B) (((A) > (B)) ? (A) : (B))
+#endif
+
+#ifndef MIN
+#define MIN(A,B) (((A) > (B)) ? (B) : (A))
+#endif
+/*
+ * Callback for the magic binary
+ */
+static void cleanup_my_data_ac(Binary *bp)
+{
+ return;
+}
+static void cleanup_my_data_bm(Binary *bp)
+{
+ return;
+}
+
+/*
+ * Initiate a (allocated) micro allocator and fill in the base
+ * for an Aho-Corasick search trie, given the accumulated length of the search
+ * strings.
+ */
+static ACTrie *create_acdata(MyAllocator *my, Uint len,
+ ACNode ***qbuff /* out */,
+ Binary **the_bin /* out */)
+{
+ Uint datasize = AC_SIZE(len);
+ ACTrie *act;
+ ACNode *acn;
+ Binary *mb = erts_create_magic_binary(datasize,cleanup_my_data_ac);
+ byte *data = ERTS_MAGIC_BIN_DATA(mb);
+
+ init_my_allocator(my, datasize, data);
+ act = my_alloc(my, sizeof(ACTrie)); /* Important that this is the first
+ allocation */
+ act->counter = 0;
+ act->root = acn = my_alloc(my, sizeof(ACNode));
+ acn->d = 0;
+ acn->final = 0;
+ acn->h = NULL;
+ memset(acn->g, 0, sizeof(ACNode *) * ALPHABET_SIZE);
+#ifdef HARDDEBUG
+ act->idc = 0;
+ acn->id = 0;
+#endif
+ *qbuff = erts_alloc(ERTS_ALC_T_TMP, sizeof(ACNode *) * len);
+ *the_bin = mb;
+ return act;
+}
+
+/*
+ * The same initialization of allocator and basic data for Boyer-More.
+ */
+static BMData *create_bmdata(MyAllocator *my, byte *x, Uint len,
+ Binary **the_bin /* out */)
+{
+ Uint datasize = BM_SIZE(len);
+ BMData *bmd;
+ Binary *mb = erts_create_magic_binary(datasize,cleanup_my_data_bm);
+ byte *data = ERTS_MAGIC_BIN_DATA(mb);
+ init_my_allocator(my, datasize, data);
+ bmd = my_alloc(my, sizeof(BMData));
+ bmd->x = my_alloc(my,len);
+ memcpy(bmd->x,x,len);
+ bmd->len = len;
+ bmd->goodshift = my_alloc(my,sizeof(Uint) * len);
+ *the_bin = mb;
+ return bmd;
+}
+
+/*
+ * Compilation of search structures
+ */
+
+/*
+ * Aho Corasick - Build a Trie and fill in the failure functions
+ * when all strings are added.
+ * The algorithm is nicely described by Dieter B�hler of University of
+ * T�bingen:
+ * http://www-sr.informatik.uni-tuebingen.de/~buehler/AC/AC.html
+ */
+
+/*
+ * Helper called once for each search pattern
+ */
+static void ac_add_one_pattern(MyAllocator *my, ACTrie *act, byte *x, Uint len)
+{
+ ACNode *acn = act->root;
+ Uint32 n = ++act->counter; /* Always increase conter, even if it's a
+ duplicate as this may identify the pattern
+ in the final set (not in current interface
+ though) */
+ Uint i = 0;
+
+ while(i < len) {
+ if (acn->g[x[i]] != NULL) {
+ /* node exists, continue */
+ acn = acn->g[x[i]];
+ ++i;
+ } else {
+ /* allocate a new node */
+ ACNode *nn = my_alloc(my,sizeof(ACNode));
+#ifdef HARDDEBUG
+ nn->id = ++(act->idc);
+#endif
+ nn->d = i+1;
+ nn->h = act->root;
+ nn->final = 0;
+ memset(nn->g, 0, sizeof(ACNode *) * ALPHABET_SIZE);
+ acn->g[x[i]] = nn;
+ ++i;
+ acn = nn;
+ }
+ }
+ if (acn->final == 0) { /* New pattern, add to final set */
+ acn->final = n;
+ }
+}
+
+/*
+ * Called when all search patterns are added.
+ */
+static void ac_compute_failure_functions(ACTrie *act, ACNode **qbuff)
+{
+ ACNode *root = act->root;
+ ACNode *parent;
+ int i;
+ int qh = 0,qt = 0;
+ ACNode *child, *r;
+
+ /* Set all children of the root to have the root as failure function */
+ for (i = 0; i < ALPHABET_SIZE; ++i) {
+ if (root->g[i] != NULL) {
+ root->g[i]->h = root;
+ /* Add to que for later traversal */
+ qbuff[qt++] = root->g[i];
+ }
+ }
+
+ /* So, now we've handled children of the root state, traverse the
+ rest of the trie BF... */
+ while (qh < qt) {
+ parent = qbuff[qh++];
+ for (i = 0; i < ALPHABET_SIZE; ++ i) {
+ if ((child = parent->g[i]) != NULL) {
+ /* Visit this node to */
+ qbuff[qt++] = child;
+ /* Search for correct failure function, follow the parents
+ failure function until you find a similar transition
+ funtion to this childs */
+ r = parent->h;
+ while (r != NULL && r->g[i] == NULL) {
+ r = r->h;
+ }
+ if (r == NULL) {
+ /* Replace NULL failures with the root as we go */
+ child->h = (root->g[i] == NULL) ? root : root->g[i];
+ } else {
+ child->h = r->g[i];
+ /*
+ * The "final" set is scattered among the nodes. When
+ * the failure function points to a member of the final
+ * set, we have a match, but we might not see it in the
+ * current node if we dont mark it as a special type of
+ * final, i.e. foolow the failure function and you will
+ * find a real member of final set. This is marked with
+ * a negative string id and only done if this node does
+ * not represent a member in the final set.
+ */
+ if (!(child->final) && (child->h->final)) {
+ child->final = -1;
+ }
+ }
+ }
+ }
+ }
+ /* Finally the failure function of the root should point to itself */
+ root->h = root;
+}
+
+
+/*
+ * The actual searching for needles in the haystack...
+ * Find first match using Aho-Coracick Trie
+ * return pattern number and fill in mpos + mlen if found, otherwise return 0
+ * Return the matching pattern that *starts* first, and ends
+ * last (difference when overlapping), hence the candidate thing.
+ * Basic AC finds the first end before the first start...
+ *
+ */
+typedef struct {
+ ACNode *q;
+ Uint pos;
+ Uint len;
+ ACNode *candidate;
+ Uint candidate_start;
+} ACFindFirstState;
+
+
+static void ac_init_find_first_match(ACFindFirstState *state, ACTrie *act, Sint startpos, Uint len)
+{
+ state->q = act->root;
+ state->pos = startpos;
+ state->len = len;
+ state->candidate = NULL;
+ state->candidate_start = 0;
+}
+#define AC_OK 0
+#define AC_NOT_FOUND -1
+#define AC_RESTART -2
+
+#define AC_LOOP_FACTOR 10
+
+static int ac_find_first_match(ACFindFirstState *state, byte *haystack,
+ Uint *mpos, Uint *mlen, Uint *reductions)
+{
+ ACNode *q = state->q;
+ Uint i = state->pos;
+ ACNode *candidate = state->candidate, *r;
+ Uint len = state->len;
+ Uint candidate_start = state->candidate_start;
+ Uint rstart;
+ register Uint reds = *reductions;
+
+ while (i < len) {
+ if (--reds == 0) {
+ state->q = q;
+ state->pos = i;
+ state->len = len;
+ state->candidate = candidate;
+ state->candidate_start = candidate_start;
+ return AC_RESTART;
+ }
+
+ while (q->g[haystack[i]] == NULL && q->h != q) {
+ q = q->h;
+ }
+ if (q->g[haystack[i]] != NULL) {
+ q = q->g[haystack[i]];
+ }
+#ifdef HARDDEBUG
+ erts_printf("ch = %c, Current: %u\n", (int) haystack[i], (unsigned) q->id);
+#endif
+ ++i;
+ if (candidate != NULL && (i - q->d) > candidate_start) {
+ break;
+ }
+ if (q->final) {
+ r = q;
+ while (r->final < 0)
+ r = r->h;
+ rstart = i - r->d;
+ if (candidate == NULL || rstart < candidate_start ||
+ (rstart == candidate_start && candidate->d < q->d)) {
+ candidate_start = rstart;
+ candidate = r;
+ }
+ }
+ }
+ *reductions = reds;
+ if (!candidate) {
+ return AC_NOT_FOUND;
+ }
+#ifdef HARDDEBUG
+ dump_ac_node(candidate,0,'?');
+#endif
+ *mpos = candidate_start;
+ *mlen = candidate->d;
+ return AC_OK;
+}
+
+typedef struct _findall_data {
+ Uint pos;
+ Uint len;
+#ifdef HARDDEBUG
+ Uint id;
+#endif
+ Eterm epos;
+ Eterm elen;
+} FindallData;
+
+typedef struct {
+ ACNode *q;
+ Uint pos;
+ Uint len;
+ Uint m;
+ Uint allocated;
+ FindallData *out;
+} ACFindAllState;
+
+static void ac_init_find_all(ACFindAllState *state, ACTrie *act, Sint startpos, Uint len)
+{
+ state->q = act->root;
+ state->pos = startpos;
+ state->len = len;
+ state->m = 0;
+ state->allocated = 0;
+ state->out = NULL;
+}
+
+static void ac_restore_find_all(ACFindAllState *state, char *buff)
+{
+ memcpy(state,buff,sizeof(ACFindAllState));
+ state->out = erts_alloc(ERTS_ALC_T_TMP, sizeof(FindallData) * (state->allocated));
+ memcpy(state->out,buff+sizeof(ACFindAllState),sizeof(FindallData)*state->m);
+}
+
+static void ac_serialize_find_all(ACFindAllState *state, char *buff)
+{
+ memcpy(buff,state,sizeof(ACFindAllState));
+ memcpy(buff+sizeof(ACFindAllState),state->out,sizeof(FindallData)*state->m);
+}
+
+static void ac_clean_find_all(ACFindAllState *state)
+{
+ if (state->out != NULL) {
+ erts_free(ERTS_ALC_T_TMP, state->out);
+ }
+#ifdef HARDDEBUG
+ state->out = NULL;
+ state->allocated = 0;
+#endif
+}
+
+#define SIZEOF_AC_SERIALIZED_FIND_ALL_STATE(S) \
+ (sizeof(ACFindAllState)+(sizeof(FindallData)*(S).m))
+
+/*
+ * Differs to the find_first function in that it stores all matches and the values
+ * arte returned only in the state.
+ */
+static int ac_find_all_non_overlapping(ACFindAllState *state, byte *haystack,
+ Uint *reductions)
+{
+ ACNode *q = state->q;
+ Uint i = state->pos;
+ Uint rstart;
+ ACNode *r;
+ Uint len = state->len;
+ Uint m = state->m, save_m;
+ Uint allocated = state->allocated;
+ FindallData *out = state->out;
+ register Uint reds = *reductions;
+
+
+ while (i < len) {
+ if (--reds == 0) {
+ state->q = q;
+ state->pos = i;
+ state->len = len;
+ state->m = m;
+ state->allocated = allocated;
+ state->out = out;
+ return AC_RESTART;
+ }
+ while (q->g[haystack[i]] == NULL && q->h != q) {
+ q = q->h;
+ }
+ if (q->g[haystack[i]] != NULL) {
+ q = q->g[haystack[i]];
+ }
+ ++i;
+ if (q->final) {
+ r = q;
+ while (r->final) {
+ while (r->final < 0)
+ r = r->h;
+#ifdef HARDDEBUG
+ erts_printf("Trying to add %u\n",(unsigned) r->final);
+#endif
+ rstart = i - r->d;
+ save_m = m;
+ while (m > 0 && (out[m-1].pos > rstart ||
+ (out[m-1].pos == rstart &&
+ out[m-1].len < r->d))) {
+#ifdef HARDDEBUG
+ erts_printf("Popping %u\n",(unsigned) out[m-1].id);
+#endif
+ --m;
+ }
+#ifdef HARDDEBUG
+ if (m > 0) {
+ erts_printf("Pos %u\n",out[m-1].pos);
+ erts_printf("Len %u\n",out[m-1].len);
+ }
+ erts_printf("Rstart %u\n",rstart);
+#endif
+ if (m == 0 || out[m-1].pos + out[m-1].len <= rstart) {
+ if (m >= allocated) {
+ if (!allocated) {
+ allocated = 10;
+ out = erts_alloc(ERTS_ALC_T_TMP,
+ sizeof(FindallData) * allocated);
+ } else {
+ allocated *= 2;
+ out = erts_realloc(ERTS_ALC_T_TMP, out,
+ sizeof(FindallData) *
+ allocated);
+ }
+ }
+ out[m].pos = rstart;
+ out[m].len = r->d;
+#ifdef HARDDEBUG
+ out[m].id = r->final;
+#endif
+ ++m;
+#ifdef HARDDEBUG
+ erts_printf("Pushing %u\n",(unsigned) out[m-1].id);
+#endif
+ } else {
+#ifdef HARDDEBUG
+ erts_printf("Backtracking %d steps\n",save_m - m);
+#endif
+ m = save_m;
+ }
+ r = r->h;
+ }
+ }
+ }
+ *reductions = reds;
+ state->m = m;
+ state->out = out;
+ return (m == 0) ? AC_NOT_FOUND : AC_OK;
+}
+
+/*
+ * Boyer More - most obviously implemented more or less exactly as
+ * Christian Charras and Thierry Lecroq describes it in "Handbook of
+ * Exact String-Matching Algorithms"
+ * http://www-igm.univ-mlv.fr/~lecroq/string/
+ */
+
+/*
+ * Call this to compute badshifts array
+ */
+static void compute_badshifts(BMData *bmd)
+{
+ Sint i;
+ Sint m = bmd->len;
+
+ for (i = 0; i < ALPHABET_SIZE; ++i) {
+ bmd->badshift[i] = m;
+ }
+ for (i = 0; i < m - 1; ++i) {
+ bmd->badshift[bmd->x[i]] = m - i - 1;
+ }
+}
+
+/* Helper for "compute_goodshifts" */
+static void compute_suffixes(byte *x, Sint m, Sint *suffixes)
+{
+ int f,g,i;
+
+ suffixes[m - 1] = m;
+
+ f = 0; /* To avoid use before set warning */
+
+ g = m - 1;
+
+ for (i = m - 2; i >= 0; --i) {
+ if (i > g && suffixes[i + m - 1 - f] < i - g) {
+ suffixes[i] = suffixes[i + m - 1 - f];
+ } else {
+ if (i < g) {
+ g = i;
+ }
+ f = i;
+ while ( g >= 0 && x[g] == x[g + m - 1 - f] ) {
+ --g;
+ }
+ suffixes[i] = f - g;
+ }
+ }
+}
+
+/*
+ * Call this to compute goodshift array
+ */
+static void compute_goodshifts(BMData *bmd)
+{
+ Sint m = bmd->len;
+ byte *x = bmd->x;
+ Sint i, j;
+ Sint *suffixes = erts_alloc(ERTS_ALC_T_TMP, m * sizeof(Sint));
+
+ compute_suffixes(x, m, suffixes);
+
+ for (i = 0; i < m; ++i) {
+ bmd->goodshift[i] = m;
+ }
+
+ j = 0;
+
+ for (i = m - 1; i >= -1; --i) {
+ if (i == -1 || suffixes[i] == i + 1) {
+ while (j < m - 1 - i) {
+ if (bmd->goodshift[j] == m) {
+ bmd->goodshift[j] = m - 1 - i;
+ }
+ ++j;
+ }
+ }
+ }
+ for (i = 0; i <= m - 2; ++i) {
+ bmd->goodshift[m - 1 - suffixes[i]] = m - 1 - i;
+ }
+ erts_free(ERTS_ALC_T_TMP, suffixes);
+}
+
+typedef struct {
+ Sint pos;
+ Sint len;
+} BMFindFirstState;
+
+#define BM_OK 0 /* used only for find_all */
+#define BM_NOT_FOUND -1
+#define BM_RESTART -2
+#define BM_LOOP_FACTOR 10 /* Should we have a higher value? */
+
+static void bm_init_find_first_match(BMFindFirstState *state, Sint startpos,
+ Uint len)
+{
+ state->pos = startpos;
+ state->len = (Sint) len;
+}
+
+
+static Sint bm_find_first_match(BMFindFirstState *state, BMData *bmd,
+ byte *haystack, Uint *reductions)
+{
+ Sint blen = bmd->len;
+ Sint len = state->len;
+ Sint *gs = bmd->goodshift;
+ Sint *bs = bmd->badshift;
+ byte *needle = bmd->x;
+ Sint i;
+ Sint j = state->pos;
+ register Uint reds = *reductions;
+
+ while (j <= len - blen) {
+ if (--reds == 0) {
+ state->pos = j;
+ return BM_RESTART;
+ }
+ for (i = blen - 1; i >= 0 && needle[i] == haystack[i + j]; --i)
+ ;
+ if (i < 0) { /* found */
+ *reductions = reds;
+ return j;
+ }
+ j += MAX(gs[i],bs[haystack[i+j]] - blen + 1 + i);
+ }
+ *reductions = reds;
+ return BM_NOT_FOUND;
+}
+
+typedef struct {
+ Sint pos;
+ Sint len;
+ Uint m;
+ Uint allocated;
+ FindallData *out;
+} BMFindAllState;
+
+static void bm_init_find_all(BMFindAllState *state, Sint startpos, Uint len)
+{
+ state->pos = startpos;
+ state->len = (Sint) len;
+ state->m = 0;
+ state->allocated = 0;
+ state->out = NULL;
+}
+
+static void bm_restore_find_all(BMFindAllState *state, char *buff)
+{
+ memcpy(state,buff,sizeof(BMFindAllState));
+ state->out = erts_alloc(ERTS_ALC_T_TMP, sizeof(FindallData) *
+ (state->allocated));
+ memcpy(state->out,buff+sizeof(BMFindAllState),
+ sizeof(FindallData)*state->m);
+}
+
+static void bm_serialize_find_all(BMFindAllState *state, char *buff)
+{
+ memcpy(buff,state,sizeof(BMFindAllState));
+ memcpy(buff+sizeof(BMFindAllState),state->out,
+ sizeof(FindallData)*state->m);
+}
+
+static void bm_clean_find_all(BMFindAllState *state)
+{
+ if (state->out != NULL) {
+ erts_free(ERTS_ALC_T_TMP, state->out);
+ }
+#ifdef HARDDEBUG
+ state->out = NULL;
+ state->allocated = 0;
+#endif
+}
+
+#define SIZEOF_BM_SERIALIZED_FIND_ALL_STATE(S) \
+ (sizeof(BMFindAllState)+(sizeof(FindallData)*(S).m))
+
+/*
+ * Differs to the find_first function in that it stores all matches and the
+ * values are returned only in the state.
+ */
+static Sint bm_find_all_non_overlapping(BMFindAllState *state,
+ BMData *bmd, byte *haystack,
+ Uint *reductions)
+{
+ Sint blen = bmd->len;
+ Sint len = state->len;
+ Sint *gs = bmd->goodshift;
+ Sint *bs = bmd->badshift;
+ byte *needle = bmd->x;
+ Sint i;
+ Sint j = state->pos;
+ Uint m = state->m;
+ Uint allocated = state->allocated;
+ FindallData *out = state->out;
+ register Uint reds = *reductions;
+
+ while (j <= len - blen) {
+ if (--reds == 0) {
+ state->pos = j;
+ state->m = m;
+ state->allocated = allocated;
+ state->out = out;
+ return BM_RESTART;
+ }
+ for (i = blen - 1; i >= 0 && needle[i] == haystack[i + j]; --i)
+ ;
+ if (i < 0) { /* found */
+ if (m >= allocated) {
+ if (!allocated) {
+ allocated = 10;
+ out = erts_alloc(ERTS_ALC_T_TMP, sizeof(FindallData) * allocated);
+ } else {
+ allocated *= 2;
+ out = erts_realloc(ERTS_ALC_T_TMP, out,
+ sizeof(FindallData) * allocated);
+ }
+ }
+ out[m].pos = j;
+ out[m].len = blen;
+ ++m;
+ j += blen;
+ } else {
+ j += MAX(gs[i],bs[haystack[i+j]] - blen + 1 + i);
+ }
+ }
+ state->m = m;
+ state->out = out;
+ *reductions = reds;
+ return (m == 0) ? BM_NOT_FOUND : BM_OK;
+}
+
+/*
+ * Interface functions (i.e. "bif's")
+ */
+
+/*
+ * Search functionality interfaces
+ */
+
+static int do_binary_match_compile(Eterm argument, Eterm *tag, Binary **binp)
+{
+ Eterm t, b, comp_term = NIL;
+ Uint characters;
+ Uint words;
+
+ characters = 0;
+ words = 0;
+
+ if (is_list(argument)) {
+ t = argument;
+ while (is_list(t)) {
+ b = CAR(list_val(t));
+ t = CDR(list_val(t));
+ if (!is_binary(b)) {
+ goto badarg;
+ }
+ if (binary_bitsize(b) != 0) {
+ goto badarg;
+ }
+ ++words;
+ characters += binary_size(b);
+ }
+ if (is_not_nil(t)) {
+ goto badarg;
+ }
+ if (words > 1) {
+ comp_term = argument;
+ } else {
+ comp_term = CAR(list_val(argument));
+ }
+ } else if (is_binary(argument)) {
+ if (binary_bitsize(argument) != 0) {
+ goto badarg;
+ }
+ words = 1;
+ comp_term = argument;
+ characters = binary_size(argument);
+ }
+
+ if (characters == 0) {
+ goto badarg;
+ }
+ ASSERT(words > 0);
+
+ if (words == 1) {
+ byte *bytes;
+ Uint bitoffs, bitsize;
+ byte *temp_alloc = NULL;
+ MyAllocator my;
+ BMData *bmd;
+ Binary *bin;
+
+ ERTS_GET_BINARY_BYTES(comp_term, bytes, bitoffs, bitsize);
+ if (bitoffs != 0) {
+ bytes = erts_get_aligned_binary_bytes(comp_term, &temp_alloc);
+ }
+ bmd = create_bmdata(&my, bytes, characters, &bin);
+ compute_badshifts(bmd);
+ compute_goodshifts(bmd);
+ erts_free_aligned_binary_bytes(temp_alloc);
+ CHECK_ALLOCATOR(my);
+ *tag = am_bm;
+ *binp = bin;
+ return 0;
+ } else {
+ ACTrie *act;
+ MyAllocator my;
+ ACNode **qbuff;
+ Binary *bin;
+
+ act = create_acdata(&my, characters, &qbuff, &bin);
+ t = comp_term;
+ while (is_list(t)) {
+ byte *bytes;
+ Uint bitoffs, bitsize;
+ byte *temp_alloc = NULL;
+ b = CAR(list_val(t));
+ t = CDR(list_val(t));
+ ERTS_GET_BINARY_BYTES(b, bytes, bitoffs, bitsize);
+ if (bitoffs != 0) {
+ bytes = erts_get_aligned_binary_bytes(b, &temp_alloc);
+ }
+ ac_add_one_pattern(&my,act,bytes,binary_size(b));
+ erts_free_aligned_binary_bytes(temp_alloc);
+ }
+ ac_compute_failure_functions(act,qbuff);
+ CHECK_ALLOCATOR(my);
+ erts_free(ERTS_ALC_T_TMP,qbuff);
+ *tag = am_ac;
+ *binp = bin;
+ return 0;
+ }
+ badarg:
+ return -1;
+}
+
+BIF_RETTYPE binary_compile_pattern_1(BIF_ALIST_1)
+{
+ Binary *bin;
+ Eterm tag, ret;
+ Eterm *hp;
+
+ if (do_binary_match_compile(BIF_ARG_1,&tag,&bin)) {
+ BIF_ERROR(BIF_P,BADARG);
+ }
+ hp = HAlloc(BIF_P, PROC_BIN_SIZE+3);
+ ret = erts_mk_magic_binary_term(&hp, &MSO(BIF_P), bin);
+ ret = TUPLE2(hp, tag, ret);
+ BIF_RET(ret);
+}
+
+#define DO_BIN_MATCH_OK 0
+#define DO_BIN_MATCH_BADARG -1
+#define DO_BIN_MATCH_RESTART -2
+
+static int do_binary_match(Process *p, Eterm subject, Uint hsstart, Uint hsend,
+ Eterm type, Binary *bin, Eterm state_term,
+ Eterm *res_term)
+{
+ byte *bytes;
+ Uint bitoffs, bitsize;
+ byte *temp_alloc = NULL;
+
+ ERTS_GET_BINARY_BYTES(subject, bytes, bitoffs, bitsize);
+ if (bitsize != 0) {
+ goto badarg;
+ }
+ if (bitoffs != 0) {
+ bytes = erts_get_aligned_binary_bytes(subject, &temp_alloc);
+ }
+ if (state_term != NIL) {
+ Eterm *ptr = big_val(state_term);
+ type = ptr[1];
+ }
+
+ if (type == am_bm) {
+ BMData *bm;
+ Sint pos;
+ Eterm ret;
+ Eterm *hp;
+ BMFindFirstState state;
+ Uint reds = get_reds(p, BM_LOOP_FACTOR);
+ Uint save_reds = reds;
+
+ bm = (BMData *) ERTS_MAGIC_BIN_DATA(bin);
+#ifdef HARDDEBUG
+ dump_bm_data(bm);
+#endif
+ if (state_term == NIL) {
+ bm_init_find_first_match(&state, hsstart, hsend);
+ } else {
+ Eterm *ptr = big_val(state_term);
+ memcpy(&state,ptr+2,sizeof(state));
+ }
+#ifdef HARDDEBUG
+ erts_printf("(bm) state->pos = %ld, state->len = %lu\n",state.pos,
+ state.len);
+#endif
+ pos = bm_find_first_match(&state, bm, bytes, &reds);
+ if (pos == BM_NOT_FOUND) {
+ ret = am_nomatch;
+ } else if (pos == BM_RESTART) {
+ int x = (sizeof(BMFindFirstState) / sizeof(Eterm)) +
+ !!(sizeof(BMFindFirstState) % sizeof(Eterm));
+#ifdef HARDDEBUG
+ erts_printf("Trap bm!\n");
+#endif
+ hp = HAlloc(p,x+2);
+ hp[0] = make_pos_bignum_header(x+1);
+ hp[1] = type;
+ memcpy(hp+2,&state,sizeof(state));
+ *res_term = make_big(hp);
+ erts_free_aligned_binary_bytes(temp_alloc);
+ return DO_BIN_MATCH_RESTART;
+ } else {
+ Eterm erlen = erts_make_integer((Uint) bm->len, p);
+ ret = erts_make_integer(pos,p);
+ hp = HAlloc(p,3);
+ ret = TUPLE2(hp, ret, erlen);
+ }
+ erts_free_aligned_binary_bytes(temp_alloc);
+ BUMP_REDS(p, (save_reds - reds) / BM_LOOP_FACTOR);
+ *res_term = ret;
+ return DO_BIN_MATCH_OK;
+ } else if (type == am_ac) {
+ ACTrie *act;
+ Uint pos, rlen;
+ int acr;
+ ACFindFirstState state;
+ Eterm ret;
+ Eterm *hp;
+ Uint reds = get_reds(p, AC_LOOP_FACTOR);
+ Uint save_reds = reds;
+
+ act = (ACTrie *) ERTS_MAGIC_BIN_DATA(bin);
+#ifdef HARDDEBUG
+ dump_ac_trie(act);
+#endif
+ if (state_term == NIL) {
+ ac_init_find_first_match(&state, act, hsstart, hsend);
+ } else {
+ Eterm *ptr = big_val(state_term);
+ memcpy(&state,ptr+2,sizeof(state));
+ }
+ acr = ac_find_first_match(&state, bytes, &pos, &rlen, &reds);
+ if (acr == AC_NOT_FOUND) {
+ ret = am_nomatch;
+ } else if (acr == AC_RESTART) {
+ int x = (sizeof(state) / sizeof(Eterm)) +
+ !!(sizeof(BMFindFirstState) % sizeof(Eterm));
+#ifdef HARDDEBUG
+ erts_printf("Trap ac!\n");
+#endif
+ hp = HAlloc(p,x+2);
+ hp[0] = make_pos_bignum_header(x+1);
+ hp[1] = type;
+ memcpy(hp+2,&state,sizeof(state));
+ *res_term = make_big(hp);
+ erts_free_aligned_binary_bytes(temp_alloc);
+ return DO_BIN_MATCH_RESTART;
+ } else {
+ Eterm epos = erts_make_integer(pos+hsstart,p);
+ Eterm erlen = erts_make_integer(rlen,p);
+ hp = HAlloc(p,3);
+ ret = TUPLE2(hp, epos, erlen);
+ }
+ erts_free_aligned_binary_bytes(temp_alloc);
+ BUMP_REDS(p, (save_reds - reds) / AC_LOOP_FACTOR);
+ *res_term = ret;
+ return DO_BIN_MATCH_OK;
+ }
+ badarg:
+ return DO_BIN_MATCH_BADARG;
+}
+
+static int do_binary_matches(Process *p, Eterm subject, Uint hsstart,
+ Uint hsend, Eterm type, Binary *bin,
+ Eterm state_term, Eterm *res_term)
+{
+ byte *bytes;
+ Uint bitoffs, bitsize;
+ byte *temp_alloc = NULL;
+
+ ERTS_GET_BINARY_BYTES(subject, bytes, bitoffs, bitsize);
+ if (bitsize != 0) {
+ goto badarg;
+ }
+ if (bitoffs != 0) {
+ bytes = erts_get_aligned_binary_bytes(subject, &temp_alloc);
+ }
+ if (state_term != NIL) {
+ Eterm *ptr = big_val(state_term);
+ type = ptr[1];
+ }
+
+ if (type == am_bm) {
+ BMData *bm;
+ Sint pos;
+ Eterm ret,tpl;
+ Eterm *hp;
+ BMFindAllState state;
+ Uint reds = get_reds(p, BM_LOOP_FACTOR);
+ Uint save_reds = reds;
+
+ bm = (BMData *) ERTS_MAGIC_BIN_DATA(bin);
+#ifdef HARDDEBUG
+ dump_bm_data(bm);
+#endif
+ if (state_term == NIL) {
+ bm_init_find_all(&state, hsstart, hsend);
+ } else {
+ Eterm *ptr = big_val(state_term);
+ bm_restore_find_all(&state,(char *) (ptr+2));
+ }
+
+ pos = bm_find_all_non_overlapping(&state, bm, bytes, &reds);
+ if (pos == BM_NOT_FOUND) {
+ ret = NIL;
+ } else if (pos == BM_RESTART) {
+ int x =
+ (SIZEOF_BM_SERIALIZED_FIND_ALL_STATE(state) / sizeof(Eterm)) +
+ !!(SIZEOF_BM_SERIALIZED_FIND_ALL_STATE(state) % sizeof(Eterm));
+#ifdef HARDDEBUG
+ erts_printf("Trap bm!\n");
+#endif
+ hp = HAlloc(p,x+2);
+ hp[0] = make_pos_bignum_header(x+1);
+ hp[1] = type;
+ bm_serialize_find_all(&state, (char *) (hp+2));
+ *res_term = make_big(hp);
+ erts_free_aligned_binary_bytes(temp_alloc);
+ bm_clean_find_all(&state);
+ return DO_BIN_MATCH_RESTART;
+ } else {
+ FindallData *fad = state.out;
+ int i;
+ for (i = 0; i < state.m; ++i) {
+ fad[i].epos = erts_make_integer(fad[i].pos,p);
+ fad[i].elen = erts_make_integer(fad[i].len,p);
+ }
+ hp = HAlloc(p,state.m * (3 + 2));
+ ret = NIL;
+ for (i = state.m - 1; i >= 0; --i) {
+ tpl = TUPLE2(hp, fad[i].epos, fad[i].elen);
+ hp +=3;
+ ret = CONS(hp,tpl,ret);
+ hp += 2;
+ }
+ }
+ erts_free_aligned_binary_bytes(temp_alloc);
+ bm_clean_find_all(&state);
+ BUMP_REDS(p, (save_reds - reds) / BM_LOOP_FACTOR);
+ *res_term = ret;
+ return DO_BIN_MATCH_OK;
+ } else if (type == am_ac) {
+ ACTrie *act;
+ int acr;
+ ACFindAllState state;
+ Eterm ret,tpl;
+ Eterm *hp;
+ Uint reds = get_reds(p, AC_LOOP_FACTOR);
+ Uint save_reds = reds;
+
+ act = (ACTrie *) ERTS_MAGIC_BIN_DATA(bin);
+#ifdef HARDDEBUG
+ dump_ac_trie(act);
+#endif
+ if (state_term == NIL) {
+ ac_init_find_all(&state, act, hsstart, hsend);
+ } else {
+ Eterm *ptr = big_val(state_term);
+ ac_restore_find_all(&state,(char *) (ptr+2));
+ }
+ acr = ac_find_all_non_overlapping(&state, bytes, &reds);
+ if (acr == AC_NOT_FOUND) {
+ ret = NIL;
+ } else if (acr == AC_RESTART) {
+ int x =
+ (SIZEOF_AC_SERIALIZED_FIND_ALL_STATE(state) / sizeof(Eterm)) +
+ !!(SIZEOF_AC_SERIALIZED_FIND_ALL_STATE(state) % sizeof(Eterm));
+#ifdef HARDDEBUG
+ erts_printf("Trap ac!\n");
+#endif
+ hp = HAlloc(p,x+2);
+ hp[0] = make_pos_bignum_header(x+1);
+ hp[1] = type;
+ ac_serialize_find_all(&state, (char *) (hp+2));
+ *res_term = make_big(hp);
+ erts_free_aligned_binary_bytes(temp_alloc);
+ ac_clean_find_all(&state);
+ return DO_BIN_MATCH_RESTART;
+ } else {
+ FindallData *fad = state.out;
+ int i;
+ for (i = 0; i < state.m; ++i) {
+ fad[i].epos = erts_make_integer(fad[i].pos,p);
+ fad[i].elen = erts_make_integer(fad[i].len,p);
+ }
+ hp = HAlloc(p,state.m * (3 + 2));
+ ret = NIL;
+ for (i = state.m - 1; i >= 0; --i) {
+ tpl = TUPLE2(hp, fad[i].epos, fad[i].elen);
+ hp +=3;
+ ret = CONS(hp,tpl,ret);
+ hp += 2;
+ }
+ }
+ erts_free_aligned_binary_bytes(temp_alloc);
+ ac_clean_find_all(&state);
+ BUMP_REDS(p, (save_reds - reds) / AC_LOOP_FACTOR);
+ *res_term = ret;
+ return DO_BIN_MATCH_OK;
+ }
+ badarg:
+ return DO_BIN_MATCH_BADARG;
+}
+
+static int parse_match_opts_list(Eterm l, Eterm bin, Uint *posp, Uint *endp)
+{
+ Eterm *tp;
+ Uint pos;
+ Sint len;
+ if (l == ((Eterm) 0) || l == NIL) {
+ /* Invalid term or NIL, we're called from binary_match(es)_2 or
+ have no options*/
+ *posp = 0;
+ *endp = binary_size(bin);
+ return 0;
+ } else if (is_list(l)) {
+ while(is_list(l)) {
+ Eterm t = CAR(list_val(l));
+ Uint orig_size;
+ if (!is_tuple(t)) {
+ goto badarg;
+ }
+ tp = tuple_val(t);
+ if (arityval(*tp) != 2) {
+ goto badarg;
+ }
+ if (tp[1] != am_scope || is_not_tuple(tp[2])) {
+ goto badarg;
+ }
+ tp = tuple_val(tp[2]);
+ if (arityval(*tp) != 2) {
+ goto badarg;
+ }
+ if (!term_to_Uint(tp[1], &pos)) {
+ goto badarg;
+ }
+ if (!term_to_Sint(tp[2], &len)) {
+ goto badarg;
+ }
+ if (len < 0) {
+ Sint lentmp = -len;
+ /* overflow */
+ if (lentmp == len || lentmp < 0 || -lentmp != len) {
+ goto badarg;
+ }
+ len = lentmp;
+ pos -= len;
+ }
+ /* overflow */
+ if ((pos + len) < pos || (len > 0 && (pos + len) == pos)) {
+ goto badarg;
+ }
+ *endp = len + pos;
+ *posp = pos;
+ if ((orig_size = binary_size(bin)) < pos ||
+ orig_size < (*endp)) {
+ goto badarg;
+ }
+ l = CDR(list_val(l));
+ }
+ return 0;
+ } else {
+ badarg:
+ return 1;
+ }
+}
+
+static BIF_RETTYPE binary_match_trap(BIF_ALIST_3)
+{
+ int runres;
+ Eterm result;
+ Binary *bin = ((ProcBin *) binary_val(BIF_ARG_3))->val;
+ runres = do_binary_match(BIF_P,BIF_ARG_1,0,0,NIL,bin,BIF_ARG_2,&result);
+ if (runres == DO_BIN_MATCH_OK) {
+ BIF_RET(result);
+ } else {
+ BUMP_ALL_REDS(BIF_P);
+ BIF_TRAP3(&binary_match_trap_export, BIF_P, BIF_ARG_1, result,
+ BIF_ARG_3);
+ }
+}
+
+static BIF_RETTYPE binary_matches_trap(BIF_ALIST_3)
+{
+ int runres;
+ Eterm result;
+ Binary *bin = ((ProcBin *) binary_val(BIF_ARG_3))->val;
+ runres = do_binary_matches(BIF_P,BIF_ARG_1,0,0,NIL,bin,BIF_ARG_2,&result);
+ if (runres == DO_BIN_MATCH_OK) {
+ BIF_RET(result);
+ } else {
+ BUMP_ALL_REDS(BIF_P);
+ BIF_TRAP3(&binary_matches_trap_export, BIF_P, BIF_ARG_1, result,
+ BIF_ARG_3);
+ }
+}
+
+BIF_RETTYPE binary_match_3(BIF_ALIST_3)
+{
+ Uint hsstart;
+ Uint hsend;
+ Eterm *tp;
+ Eterm type;
+ Binary *bin;
+ Eterm bin_term = NIL;
+ int runres;
+ Eterm result;
+
+ if (is_not_binary(BIF_ARG_1)) {
+ goto badarg;
+ }
+ if (parse_match_opts_list(BIF_ARG_3,BIF_ARG_1,&hsstart,&hsend)) {
+ goto badarg;
+ }
+ if (hsend == 0) {
+ BIF_RET(am_nomatch);
+ }
+ if (is_tuple(BIF_ARG_2)) {
+ tp = tuple_val(BIF_ARG_2);
+ if (arityval(*tp) != 2 || is_not_atom(tp[1])) {
+ goto badarg;
+ }
+ if (((tp[1] != am_bm) && (tp[1] != am_ac)) ||
+ !ERTS_TERM_IS_MAGIC_BINARY(tp[2])) {
+ goto badarg;
+ }
+ type = tp[1];
+ bin = ((ProcBin *) binary_val(tp[2]))->val;
+ if (type == am_bm &&
+ ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data_bm) {
+ goto badarg;
+ }
+ if (type == am_ac &&
+ ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data_ac) {
+ goto badarg;
+ }
+ bin_term = tp[2];
+ } else if (do_binary_match_compile(BIF_ARG_2,&type,&bin)) {
+ goto badarg;
+ }
+ runres = do_binary_match(BIF_P,BIF_ARG_1,hsstart,hsend,type,bin,NIL,&result);
+ if (runres == DO_BIN_MATCH_RESTART && bin_term == NIL) {
+ Eterm *hp = HAlloc(BIF_P, PROC_BIN_SIZE);
+ bin_term = erts_mk_magic_binary_term(&hp, &MSO(BIF_P), bin);
+ } else if (bin_term == NIL) {
+ erts_bin_free(bin);
+ }
+ switch (runres) {
+ case DO_BIN_MATCH_OK:
+ BIF_RET(result);
+ case DO_BIN_MATCH_RESTART:
+ BUMP_ALL_REDS(BIF_P);
+ BIF_TRAP3(&binary_match_trap_export, BIF_P, BIF_ARG_1, result, bin_term);
+ default:
+ goto badarg;
+ }
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+BIF_RETTYPE binary_matches_3(BIF_ALIST_3)
+{
+ Uint hsstart, hsend;
+ Eterm *tp;
+ Eterm type;
+ Binary *bin;
+ Eterm bin_term = NIL;
+ int runres;
+ Eterm result;
+
+ if (is_not_binary(BIF_ARG_1)) {
+ goto badarg;
+ }
+ if (parse_match_opts_list(BIF_ARG_3,BIF_ARG_1,&hsstart,&hsend)) {
+ goto badarg;
+ }
+ if (hsend == 0) {
+ BIF_RET(am_nomatch);
+ }
+ if (is_tuple(BIF_ARG_2)) {
+ tp = tuple_val(BIF_ARG_2);
+ if (arityval(*tp) != 2 || is_not_atom(tp[1])) {
+ goto badarg;
+ }
+ if (((tp[1] != am_bm) && (tp[1] != am_ac)) ||
+ !ERTS_TERM_IS_MAGIC_BINARY(tp[2])) {
+ goto badarg;
+ }
+ type = tp[1];
+ bin = ((ProcBin *) binary_val(tp[2]))->val;
+ if (type == am_bm &&
+ ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data_bm) {
+ goto badarg;
+ }
+ if (type == am_ac &&
+ ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data_ac) {
+ goto badarg;
+ }
+ bin_term = tp[2];
+ } else if (do_binary_match_compile(BIF_ARG_2,&type,&bin)) {
+ goto badarg;
+ }
+ runres = do_binary_matches(BIF_P,BIF_ARG_1,hsstart,hsend,type,bin,
+ NIL,&result);
+ if (runres == DO_BIN_MATCH_RESTART && bin_term == NIL) {
+ Eterm *hp = HAlloc(BIF_P, PROC_BIN_SIZE);
+ bin_term = erts_mk_magic_binary_term(&hp, &MSO(BIF_P), bin);
+ } else if (bin_term == NIL) {
+ erts_bin_free(bin);
+ }
+ switch (runres) {
+ case DO_BIN_MATCH_OK:
+ BIF_RET(result);
+ case DO_BIN_MATCH_RESTART:
+ BUMP_ALL_REDS(BIF_P);
+ BIF_TRAP3(&binary_matches_trap_export, BIF_P, BIF_ARG_1, result,
+ bin_term);
+ default:
+ goto badarg;
+ }
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+
+BIF_RETTYPE binary_match_2(BIF_ALIST_2)
+{
+ return binary_match_3(BIF_P,BIF_ARG_1,BIF_ARG_2,((Eterm) 0));
+}
+
+
+BIF_RETTYPE binary_matches_2(BIF_ALIST_2)
+{
+ return binary_matches_3(BIF_P,BIF_ARG_1,BIF_ARG_2,((Eterm) 0));
+}
+
+
+BIF_RETTYPE erts_binary_part(Process *p, Eterm binary, Eterm epos, Eterm elen)
+{
+ Uint pos;
+ Sint len;
+ size_t orig_size;
+ Eterm orig;
+ Uint offset;
+ Uint bit_offset;
+ Uint bit_size;
+ Eterm* hp;
+ ErlSubBin* sb;
+
+ if (is_not_binary(binary)) {
+ goto badarg;
+ }
+ if (!term_to_Uint(epos, &pos)) {
+ goto badarg;
+ }
+ if (!term_to_Sint(elen, &len)) {
+ goto badarg;
+ }
+ if (len < 0) {
+ Sint lentmp = -len;
+ /* overflow */
+ if (lentmp == len || lentmp < 0 || -lentmp != len) {
+ goto badarg;
+ }
+ len = lentmp;
+ if (len > pos) {
+ goto badarg;
+ }
+ pos -= len;
+ }
+ /* overflow */
+ if ((pos + len) < pos || (len > 0 && (pos + len) == pos)){
+ goto badarg;
+ }
+ if ((orig_size = binary_size(binary)) < pos ||
+ orig_size < (pos + len)) {
+ goto badarg;
+ }
+
+
+
+ hp = HAlloc(p, ERL_SUB_BIN_SIZE);
+
+ ERTS_GET_REAL_BIN(binary, orig, offset, bit_offset, bit_size);
+ sb = (ErlSubBin *) hp;
+ sb->thing_word = HEADER_SUB_BIN;
+ sb->size = len;
+ sb->offs = offset + pos;
+ sb->orig = orig;
+ sb->bitoffs = bit_offset;
+ sb->bitsize = 0;
+ sb->is_writable = 0;
+
+ BIF_RET(make_binary(sb));
+
+ badarg:
+ BIF_ERROR(p, BADARG);
+}
+
+#define ERTS_NEED_GC(p, need) ((HEAP_LIMIT((p)) - HEAP_TOP((p))) <= (need))
+
+BIF_RETTYPE erts_gc_binary_part(Process *p, Eterm *reg, Eterm live, int range_is_tuple)
+{
+ Uint pos;
+ Sint len;
+ size_t orig_size;
+ Eterm orig;
+ Uint offset;
+ Uint bit_offset;
+ Uint bit_size;
+ Eterm* hp;
+ ErlSubBin* sb;
+ Eterm binary;
+ Eterm *tp;
+ Eterm epos, elen;
+ int extra_args;
+
+
+ if (range_is_tuple) {
+ Eterm tpl = reg[live];
+ extra_args = 1;
+ if (is_not_tuple(tpl)) {
+ goto badarg;
+ }
+ tp = tuple_val(tpl);
+ if (arityval(*tp) != 2) {
+ goto badarg;
+ }
+
+ epos = tp[1];
+ elen = tp[2];
+ } else {
+ extra_args = 2;
+ epos = reg[live-1];
+ elen = reg[live];
+ }
+ binary = reg[live-extra_args];
+
+ if (is_not_binary(binary)) {
+ goto badarg;
+ }
+ if (!term_to_Uint(epos, &pos)) {
+ goto badarg;
+ }
+ if (!term_to_Sint(elen, &len)) {
+ goto badarg;
+ }
+ if (len < 0) {
+ Sint lentmp = -len;
+ /* overflow */
+ if (lentmp == len || lentmp < 0 || -lentmp != len) {
+ goto badarg;
+ }
+ len = lentmp;
+ if (len > pos) {
+ goto badarg;
+ }
+ pos -= len;
+ }
+ /* overflow */
+ if ((pos + len) < pos || (len > 0 && (pos + len) == pos)) {
+ goto badarg;
+ }
+ if ((orig_size = binary_size(binary)) < pos ||
+ orig_size < (pos + len)) {
+ goto badarg;
+ }
+
+ if (ERTS_NEED_GC(p, ERL_SUB_BIN_SIZE)) {
+ erts_garbage_collect(p, ERL_SUB_BIN_SIZE, reg, live+1-extra_args); /* I don't need the tuple
+ or indices any more */
+ binary = reg[live-extra_args];
+ }
+
+ hp = p->htop;
+ p->htop += ERL_SUB_BIN_SIZE;
+
+ ERTS_GET_REAL_BIN(binary, orig, offset, bit_offset, bit_size);
+
+ sb = (ErlSubBin *) hp;
+ sb->thing_word = HEADER_SUB_BIN;
+ sb->size = len;
+ sb->offs = offset + pos;
+ sb->orig = orig;
+ sb->bitoffs = bit_offset;
+ sb->bitsize = 0;
+ sb->is_writable = 0;
+
+ BIF_RET(make_binary(sb));
+
+ badarg:
+ BIF_ERROR(p, BADARG);
+}
+/*************************************************************
+ * The actual guard BIFs are in erl_bif_guard.c
+ * but the implementation of both the non-gc and the gc
+ * variants are here. Note that the functions are named so that they do
+ * not clash with the guard bif's erlang:binary_part/2,3
+ *************************************************************/
+
+BIF_RETTYPE binary_binary_part_3(BIF_ALIST_3)
+{
+ return erts_binary_part(BIF_P,BIF_ARG_1,BIF_ARG_2, BIF_ARG_3);
+}
+
+BIF_RETTYPE binary_binary_part_2(BIF_ALIST_2)
+{
+ Eterm *tp;
+ if (is_not_tuple(BIF_ARG_2)) {
+ goto badarg;
+ }
+ tp = tuple_val(BIF_ARG_2);
+ if (arityval(*tp) != 2) {
+ goto badarg;
+ }
+ return erts_binary_part(BIF_P,BIF_ARG_1,tp[1], tp[2]);
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+typedef struct {
+ int type; /* CL_TYPE_XXX */
+ byte *temp_alloc; /* Used for erts_get/free_aligned, i.e. CL_TYPE_ALIGNED */
+ unsigned char *buff; /* Used for all types, malloced if CL_TYPE_HEAP */
+ Uint bufflen; /* The length (in bytes) of buffer */
+} CommonData;
+
+#define COMMON_LOOP_FACTOR 10
+
+#define DIRECTION_PREFIX 0
+#define DIRECTION_SUFFIX 1
+
+#define CL_OK 0
+#define CL_RESTART 1
+
+/* The type field in the above structure */
+#define CL_TYPE_EMPTY 0 /* End of array */
+#define CL_TYPE_HEAP 1
+#define CL_TYPE_ALIGNED 2
+#define CL_TYPE_COMMON 3 /* emacsulated */
+#define CL_TYPE_HEAP_NOALLOC 4 /* Will need allocating when trapping */
+
+
+static int do_search_forward(CommonData *cd, Uint *posp, Uint *redsp)
+{
+ Uint pos = *posp;
+ Sint reds = (Sint) *redsp;
+ int i;
+ unsigned char current = 0;
+
+ for(;;) {
+ for(i = 0; cd[i].type != CL_TYPE_EMPTY; ++i) {
+ if (pos >= cd[i].bufflen) {
+ *posp = pos;
+ if (reds > 0) {
+ *redsp = (Uint) reds;
+ } else {
+ *redsp = 0;
+ }
+ return CL_OK;
+ }
+ if (i == 0) {
+ current = cd[i].buff[pos];
+ } else {
+ if (cd[i].buff[pos] != current) {
+ *posp = pos;
+ if (reds > 0) {
+ *redsp = (Uint) reds;
+ } else {
+ *redsp = 0;
+ }
+ return CL_OK;
+ }
+ }
+ --reds;
+ }
+ ++pos;
+ if (reds <= 0) {
+ *posp = pos;
+ *redsp = 0;
+ return CL_RESTART;
+ }
+ }
+}
+static int do_search_backward(CommonData *cd, Uint *posp, Uint *redsp)
+{
+ Uint pos = *posp;
+ Sint reds = (Sint) *redsp;
+ int i;
+ unsigned char current = 0;
+
+ for(;;) {
+ for(i = 0; cd[i].type != CL_TYPE_EMPTY; ++i) {
+ if (pos >= cd[i].bufflen) {
+ *posp = pos;
+ if (reds > 0) {
+ *redsp = (Uint) reds;
+ } else {
+ *redsp = 0;
+ }
+ return CL_OK;
+ }
+ if (i == 0) {
+ current = cd[i].buff[cd[i].bufflen - 1 - pos];
+ } else {
+ if (cd[i].buff[cd[i].bufflen - 1 - pos] != current) {
+ *posp = pos;
+ if (reds > 0) {
+ *redsp = (Uint) reds;
+ } else {
+ *redsp = 0;
+ }
+ return CL_OK;
+ }
+ }
+ --reds;
+ }
+ ++pos;
+ if (reds <= 0) {
+ *posp = pos;
+ *redsp = 0;
+ return CL_RESTART;
+ }
+ }
+}
+
+static void cleanup_common_data(Binary *bp)
+{
+ int i;
+ CommonData *cd;
+ cd = (CommonData *) ERTS_MAGIC_BIN_DATA(bp);
+ for (i=0;cd[i].type != CL_TYPE_EMPTY;++i) {
+ switch (cd[i].type) {
+ case CL_TYPE_HEAP:
+ erts_free(ERTS_ALC_T_BINARY_BUFFER,cd[i].buff);
+ break;
+ case CL_TYPE_ALIGNED:
+ erts_free_aligned_binary_bytes_extra(cd[i].temp_alloc, ERTS_ALC_T_BINARY_BUFFER);
+ break;
+ default:
+ break;
+ }
+ }
+ return;
+}
+
+static BIF_RETTYPE do_longest_common(Process *p, Eterm list, int direction)
+{
+ Eterm l = list;
+ int n = 0;
+ Binary *mb;
+ CommonData *cd;
+ int i = 0;
+ Uint reds = get_reds(p, COMMON_LOOP_FACTOR);
+ Uint save_reds = reds;
+ int res;
+ Export *trapper;
+ Uint pos;
+ Eterm epos;
+ Eterm *hp;
+ Eterm bin_term;
+ Eterm b;
+
+ /* First just count the number of binaries */
+ while (is_list(l)) {
+ b = CAR(list_val(l));
+ if (!is_binary(b)) {
+ goto badarg;
+ }
+ ++n;
+ l = CDR(list_val(l));
+ }
+ if (l != NIL || n == 0) {
+ goto badarg;
+ }
+
+ /* OK, now create a buffer of the right size, we can do a magic binary right away,
+ thats not to costly. */
+ mb = erts_create_magic_binary((n+1)*sizeof(CommonData),cleanup_common_data);
+ cd = (CommonData *) ERTS_MAGIC_BIN_DATA(mb);
+ l = list;
+ while (is_list(l)) {
+ Uint bitoffs;
+ Uint bitsize;
+ Uint offset;
+ Eterm real_bin;
+ ProcBin* pb;
+
+ cd[i].type = CL_TYPE_EMPTY;
+ b = CAR(list_val(l));
+ ERTS_GET_REAL_BIN(b, real_bin, offset, bitoffs, bitsize);
+ if (bitsize != 0) {
+ erts_bin_free(mb);
+ goto badarg;
+ }
+ cd[i].bufflen = binary_size(b);
+ cd[i].temp_alloc = NULL;
+ if (*(binary_val(real_bin)) == HEADER_PROC_BIN) {
+ pb = (ProcBin *) binary_val(real_bin);
+ if (pb->flags) {
+ erts_emasculate_writable_binary(pb);
+ }
+ cd[i].buff = erts_get_aligned_binary_bytes_extra(b, &(cd[i].temp_alloc),
+ ERTS_ALC_T_BINARY_BUFFER,0);
+ cd[i].type = (cd[i].temp_alloc != NULL) ? CL_TYPE_ALIGNED : CL_TYPE_COMMON;
+ } else { /* Heap binary */
+ cd[i].buff = erts_get_aligned_binary_bytes_extra(b, &(cd[i].temp_alloc),
+ ERTS_ALC_T_BINARY_BUFFER,0);
+ /* CL_TYPE_HEAP_NOALLOC means you have to copy if trapping */
+ cd[i].type = (cd[i].temp_alloc != NULL) ? CL_TYPE_ALIGNED : CL_TYPE_HEAP_NOALLOC;
+ }
+ ++i;
+ l = CDR(list_val(l));
+ }
+ cd[i].type = CL_TYPE_EMPTY;
+#if defined(DEBUG) || defined(VALGRIND)
+ cd[i].temp_alloc = NULL;
+ cd[i].buff = NULL;
+ cd[i].bufflen = 0;
+#endif
+
+ pos = 0;
+ if (direction == DIRECTION_PREFIX) {
+ trapper = &binary_longest_prefix_trap_export;
+ res = do_search_forward(cd,&pos,&reds);
+ } else {
+ ASSERT(direction == DIRECTION_SUFFIX);
+ trapper = &binary_longest_suffix_trap_export;
+ res = do_search_backward(cd,&pos,&reds);
+ }
+ epos = erts_make_integer(pos,p);
+ if (res == CL_OK) {
+ erts_bin_free(mb);
+ BUMP_REDS(p, (save_reds - reds) / COMMON_LOOP_FACTOR);
+ BIF_RET(epos);
+ } else {
+ ASSERT(res == CL_RESTART);
+ /* Copy all heap binaries that are not already copied (aligned) */
+ for(i = 0; i < n; ++i) {
+ if (cd[i].type == CL_TYPE_HEAP_NOALLOC) {
+ unsigned char *tmp = cd[i].buff;
+ cd[i].buff = erts_alloc(ERTS_ALC_T_BINARY_BUFFER, cd[i].bufflen);
+ memcpy(cd[i].buff,tmp,cd[i].bufflen);
+ cd[i].type = CL_TYPE_HEAP;
+ }
+ }
+ hp = HAlloc(p, PROC_BIN_SIZE);
+ bin_term = erts_mk_magic_binary_term(&hp, &MSO(p), mb);
+ BUMP_ALL_REDS(p);
+ BIF_TRAP3(trapper, p, bin_term, epos,list);
+ }
+ badarg:
+ BIF_ERROR(p,BADARG);
+}
+
+static BIF_RETTYPE do_longest_common_trap(Process *p, Eterm bin_term, Eterm current_pos,
+ Eterm orig_list, int direction)
+{
+ Uint reds = get_reds(p, COMMON_LOOP_FACTOR);
+ Uint save_reds = reds;
+ Uint pos;
+ Binary *bin;
+ CommonData *cd;
+ int res;
+ Eterm epos;
+ Export *trapper;
+
+#ifdef DEBUG
+ int r;
+ r = term_to_Uint(current_pos, &pos);
+ ASSERT(r != 0);
+#else
+ term_to_Uint(current_pos, &pos);
+#endif
+ ASSERT(ERTS_TERM_IS_MAGIC_BINARY(bin_term));
+ bin = ((ProcBin *) binary_val(bin_term))->val;
+ cd = (CommonData *) ERTS_MAGIC_BIN_DATA(bin);
+ if (direction == DIRECTION_PREFIX) {
+ trapper = &binary_longest_prefix_trap_export;
+ res = do_search_forward(cd,&pos,&reds);
+ } else {
+ ASSERT(direction == DIRECTION_SUFFIX);
+ trapper = &binary_longest_suffix_trap_export;
+ res = do_search_backward(cd,&pos,&reds);
+ }
+ epos = erts_make_integer(pos,p);
+ if (res == CL_OK) {
+ BUMP_REDS(p, (save_reds - reds) / COMMON_LOOP_FACTOR);
+ BIF_RET(epos);
+ } else {
+ ASSERT(res == CL_RESTART);
+ /* Copy all heap binaries that are not already copied (aligned) */
+ BUMP_ALL_REDS(p);
+ BIF_TRAP3(trapper, p, bin_term, epos, orig_list);
+ }
+}
+
+static BIF_RETTYPE binary_longest_prefix_trap(BIF_ALIST_3)
+{
+ return do_longest_common_trap(BIF_P,BIF_ARG_1,BIF_ARG_2,BIF_ARG_3,DIRECTION_PREFIX);
+}
+
+static BIF_RETTYPE binary_longest_suffix_trap(BIF_ALIST_3)
+{
+ return do_longest_common_trap(BIF_P,BIF_ARG_1,BIF_ARG_2,BIF_ARG_3,DIRECTION_SUFFIX);
+}
+
+BIF_RETTYPE binary_longest_common_prefix_1(BIF_ALIST_1)
+{
+ return do_longest_common(BIF_P,BIF_ARG_1,DIRECTION_PREFIX);
+}
+
+BIF_RETTYPE binary_longest_common_suffix_1(BIF_ALIST_1)
+{
+ return do_longest_common(BIF_P,BIF_ARG_1,DIRECTION_SUFFIX);
+}
+
+BIF_RETTYPE binary_first_1(BIF_ALIST_1)
+{
+ byte* bytes;
+ Uint byte_size;
+ Uint bit_offs;
+ Uint bit_size;
+ Uint res;
+
+ if (is_not_binary(BIF_ARG_1)) {
+ goto badarg;
+ }
+ byte_size = binary_size(BIF_ARG_1);
+ if (!byte_size) {
+ goto badarg;
+ }
+ ERTS_GET_BINARY_BYTES(BIF_ARG_1,bytes,bit_offs,bit_size);
+ if (bit_size) {
+ goto badarg;
+ }
+ if (bit_offs) {
+ res = ((((Uint) bytes[0]) << bit_offs) | (((Uint) bytes[1]) >> (8-bit_offs))) & 0xFF;
+ } else {
+ res = bytes[0];
+ }
+ BIF_RET(make_small(res));
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+BIF_RETTYPE binary_last_1(BIF_ALIST_1)
+{
+ byte* bytes;
+ Uint byte_size;
+ Uint bit_offs;
+ Uint bit_size;
+ Uint res;
+
+ if (is_not_binary(BIF_ARG_1)) {
+ goto badarg;
+ }
+ byte_size = binary_size(BIF_ARG_1);
+ if (!byte_size) {
+ goto badarg;
+ }
+ ERTS_GET_BINARY_BYTES(BIF_ARG_1,bytes,bit_offs,bit_size);
+ if (bit_size) {
+ goto badarg;
+ }
+ if (bit_offs) {
+ res = ((((Uint) bytes[byte_size-1]) << bit_offs) |
+ (((Uint) bytes[byte_size]) >> (8-bit_offs))) & 0xFF;
+ } else {
+ res = bytes[byte_size-1];
+ }
+ BIF_RET(make_small(res));
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+BIF_RETTYPE binary_at_2(BIF_ALIST_2)
+{
+ byte* bytes;
+ Uint byte_size;
+ Uint bit_offs;
+ Uint bit_size;
+ Uint res;
+ Uint index;
+
+ if (is_not_binary(BIF_ARG_1)) {
+ goto badarg;
+ }
+ byte_size = binary_size(BIF_ARG_1);
+ if (!byte_size) {
+ goto badarg;
+ }
+ if (!term_to_Uint(BIF_ARG_2, &index)) {
+ goto badarg;
+ }
+ if (index >= byte_size) {
+ goto badarg;
+ }
+ ERTS_GET_BINARY_BYTES(BIF_ARG_1,bytes,bit_offs,bit_size);
+ if (bit_size) {
+ goto badarg;
+ }
+ if (bit_offs) {
+ res = ((((Uint) bytes[index]) << bit_offs) |
+ (((Uint) bytes[index+1]) >> (8-bit_offs))) & 0xFF;
+ } else {
+ res = bytes[index];
+ }
+ BIF_RET(make_small(res));
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+#define BIN_TO_LIST_OK 0
+#define BIN_TO_LIST_TRAP 1
+/* No badarg, checked before call */
+
+#define BIN_TO_LIST_LOOP_FACTOR 10
+
+static int do_bin_to_list(Process *p, byte *bytes, Uint bit_offs,
+ Uint start, Sint *lenp, Eterm *termp)
+{
+ Uint reds = get_reds(p, BIN_TO_LIST_LOOP_FACTOR); /* reds can never be 0 */
+ Uint len = *lenp;
+ Uint loops;
+ Eterm *hp;
+ Eterm term = *termp;
+ Uint n;
+
+ ASSERT(reds > 0);
+
+ loops = MIN(reds,len);
+
+ BUMP_REDS(p, loops / BIN_TO_LIST_LOOP_FACTOR);
+
+ hp = HAlloc(p,2*loops);
+ while (loops--) {
+ --len;
+ if (bit_offs) {
+ n = ((((Uint) bytes[start+len]) << bit_offs) |
+ (((Uint) bytes[start+len+1]) >> (8-bit_offs))) & 0xFF;
+ } else {
+ n = bytes[start+len];
+ }
+
+ term = CONS(hp,make_small(n),term);
+ hp +=2;
+ }
+ *termp = term;
+ *lenp = len;
+ if (len) {
+ BUMP_ALL_REDS(p);
+ return BIN_TO_LIST_TRAP;
+ }
+ return BIN_TO_LIST_OK;
+}
+
+
+static BIF_RETTYPE do_trap_bin_to_list(Process *p, Eterm binary,
+ Uint start, Sint len, Eterm sofar)
+{
+ Eterm *hp;
+ Eterm blob;
+
+ hp = HAlloc(p,3);
+ hp[0] = make_pos_bignum_header(2);
+ hp[1] = start;
+ hp[2] = (Uint) len;
+ blob = make_big(hp);
+ BIF_TRAP3(&binary_bin_to_list_trap_export, p, binary, blob, sofar);
+}
+
+static BIF_RETTYPE binary_bin_to_list_trap(BIF_ALIST_3)
+{
+ Eterm *ptr;
+ Uint start;
+ Sint len;
+ byte *bytes;
+ Uint bit_offs;
+ Uint bit_size;
+ Eterm res = BIF_ARG_3;
+
+ ptr = big_val(BIF_ARG_2);
+ start = ptr[1];
+ len = (Sint) ptr[2];
+
+ ERTS_GET_BINARY_BYTES(BIF_ARG_1,bytes,bit_offs,bit_size);
+ if (do_bin_to_list(BIF_P, bytes, bit_offs, start, &len, &res) ==
+ BIN_TO_LIST_OK) {
+ BIF_RET(res);
+ }
+ return do_trap_bin_to_list(BIF_P,BIF_ARG_1,start,len,res);
+}
+
+static BIF_RETTYPE binary_bin_to_list_common(Process *p,
+ Eterm bin,
+ Eterm epos,
+ Eterm elen)
+{
+ Uint pos;
+ Sint len;
+ size_t sz;
+ byte *bytes;
+ Uint bit_offs;
+ Uint bit_size;
+ Eterm res = NIL;
+
+ if (is_not_binary(bin)) {
+ goto badarg;
+ }
+ if (!term_to_Uint(epos, &pos)) {
+ goto badarg;
+ }
+ if (!term_to_Sint(elen, &len)) {
+ goto badarg;
+ }
+ if (len < 0) {
+ Sint lentmp = -len;
+ /* overflow */
+ if (lentmp == len || lentmp < 0 || -lentmp != len) {
+ goto badarg;
+ }
+ len = lentmp;
+ if (len > pos) {
+ goto badarg;
+ }
+ pos -= len;
+ }
+ /* overflow */
+ if ((pos + len) < pos || (len > 0 && (pos + len) == pos)) {
+ goto badarg;
+ }
+ sz = binary_size(bin);
+
+ if (pos+len > sz) {
+ goto badarg;
+ }
+ ERTS_GET_BINARY_BYTES(bin,bytes,bit_offs,bit_size);
+ if (bit_size != 0) {
+ goto badarg;
+ }
+ if(do_bin_to_list(p, bytes, bit_offs, pos, &len, &res) ==
+ BIN_TO_LIST_OK) {
+ BIF_RET(res);
+ }
+ return do_trap_bin_to_list(p,bin,pos,len,res);
+
+ badarg:
+ BIF_ERROR(p,BADARG);
+}
+
+BIF_RETTYPE binary_bin_to_list_3(BIF_ALIST_3)
+{
+ return binary_bin_to_list_common(BIF_P,BIF_ARG_1,BIF_ARG_2,BIF_ARG_3);
+}
+
+BIF_RETTYPE binary_bin_to_list_2(BIF_ALIST_2)
+{
+ Eterm *tp;
+
+ if (is_not_tuple(BIF_ARG_2)) {
+ goto badarg;
+ }
+ tp = tuple_val(BIF_ARG_2);
+ if (arityval(*tp) != 2) {
+ goto badarg;
+ }
+ return binary_bin_to_list_common(BIF_P,BIF_ARG_1,tp[1],tp[2]);
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+BIF_RETTYPE binary_bin_to_list_1(BIF_ALIST_1)
+{
+ Uint pos = 0;
+ Sint len;
+ byte *bytes;
+ Uint bit_offs;
+ Uint bit_size;
+ Eterm res = NIL;
+
+ if (is_not_binary(BIF_ARG_1)) {
+ goto badarg;
+ }
+ len = binary_size(BIF_ARG_1);
+ ERTS_GET_BINARY_BYTES(BIF_ARG_1,bytes,bit_offs,bit_size);
+ if (bit_size != 0) {
+ goto badarg;
+ }
+ if(do_bin_to_list(BIF_P, bytes, bit_offs, pos, &len, &res) ==
+ BIN_TO_LIST_OK) {
+ BIF_RET(res);
+ }
+ return do_trap_bin_to_list(BIF_P,BIF_ARG_1,pos,len,res);
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+/*
+ * Ok, erlang:list_to_binary does not interrupt, and we really don't want
+ * an alternative implementation for the exact same thing, why we
+ * have descided to use the old non-restarting implementation for now.
+ * In reality, there is seldom many iterations involved in doing this, so the
+ * problem of long-running-bif's is not really that big in this case.
+ * So, for now we use the old implementation also in the module binary.
+ */
+
+BIF_RETTYPE binary_list_to_bin_1(BIF_ALIST_1)
+{
+ return erts_list_to_binary_bif(BIF_P, BIF_ARG_1);
+}
+
+typedef struct {
+ Uint times_left;
+ Uint source_size;
+ int source_type;
+ byte *source;
+ byte *temp_alloc;
+ Uint result_pos;
+ Binary *result;
+} CopyBinState;
+
+#define BC_TYPE_EMPTY 0
+#define BC_TYPE_HEAP 1
+#define BC_TYPE_ALIGNED 2 /* May or may not point to (emasculated) binary, temp_alloc field is set
+ so that erts_free_aligned_binary_bytes_extra can handle either */
+
+
+#define BINARY_COPY_LOOP_FACTOR 100
+
+static void cleanup_copy_bin_state(Binary *bp)
+{
+ CopyBinState *cbs = (CopyBinState *) ERTS_MAGIC_BIN_DATA(bp);
+ if (cbs->result != NULL) {
+ erts_bin_free(cbs->result);
+ cbs->result = NULL;
+ }
+ switch (cbs->source_type) {
+ case BC_TYPE_HEAP:
+ erts_free(ERTS_ALC_T_BINARY_BUFFER,cbs->source);
+ break;
+ case BC_TYPE_ALIGNED:
+ erts_free_aligned_binary_bytes_extra(cbs->temp_alloc,
+ ERTS_ALC_T_BINARY_BUFFER);
+ break;
+ default:
+ /* otherwise do nothing */
+ break;
+ }
+ cbs->source_type = BC_TYPE_EMPTY;
+}
+
+/*
+ * Binary *erts_bin_nrml_alloc(Uint size);
+ * Binary *erts_bin_realloc(Binary *bp, Uint size);
+ * void erts_bin_free(Binary *bp);
+ */
+static BIF_RETTYPE do_binary_copy(Process *p, Eterm bin, Eterm en)
+{
+ Uint n;
+ byte *bytes;
+ Uint bit_offs;
+ Uint bit_size;
+ size_t size;
+ Uint reds = get_reds(p, BINARY_COPY_LOOP_FACTOR);
+ Uint target_size;
+ byte *t;
+ Uint pos;
+
+
+ if (is_not_binary(bin)) {
+ goto badarg;
+ }
+ if (!term_to_Uint(en, &n)) {
+ goto badarg;
+ }
+ if (!n) {
+ Eterm res_term = erts_new_heap_binary(p,NULL,0,&bytes);
+ BIF_RET(res_term);
+ }
+ ERTS_GET_BINARY_BYTES(bin,bytes,bit_offs,bit_size);
+ if (bit_size != 0) {
+ goto badarg;
+ }
+
+ size = binary_size(bin);
+ target_size = size * n;
+
+ if ((target_size - size) >= reds) {
+ Eterm orig;
+ Uint offset;
+ Uint bit_offset;
+ Uint bit_size;
+ CopyBinState *cbs;
+ Eterm *hp;
+ Eterm trap_term;
+ int i;
+
+ /* We will trap, set up the structure for trapping right away */
+ Binary *mb = erts_create_magic_binary(sizeof(CopyBinState),
+ cleanup_copy_bin_state);
+ cbs = ERTS_MAGIC_BIN_DATA(mb);
+
+ cbs->temp_alloc = NULL;
+ cbs->source = NULL;
+
+ ERTS_GET_REAL_BIN(bin, orig, offset, bit_offset, bit_size);
+ if (*(binary_val(orig)) == HEADER_PROC_BIN) {
+ ProcBin* pb = (ProcBin *) binary_val(orig);
+ if (pb->flags) {
+ erts_emasculate_writable_binary(pb);
+ }
+ cbs->source =
+ erts_get_aligned_binary_bytes_extra(bin,
+ &(cbs->temp_alloc),
+ ERTS_ALC_T_BINARY_BUFFER,
+ 0);
+ cbs->source_type = BC_TYPE_ALIGNED;
+ } else { /* Heap binary */
+ cbs->source =
+ erts_get_aligned_binary_bytes_extra(bin,
+ &(cbs->temp_alloc),
+ ERTS_ALC_T_BINARY_BUFFER,
+ 0);
+ if (!(cbs->temp_alloc)) { /* alignment not needed, need to copy */
+ byte *tmp = erts_alloc(ERTS_ALC_T_BINARY_BUFFER,size);
+ memcpy(tmp,cbs->source,size);
+ cbs->source = tmp;
+ cbs->source_type = BC_TYPE_HEAP;
+ } else {
+ cbs->source_type = BC_TYPE_ALIGNED;
+ }
+ }
+ cbs->result = erts_bin_nrml_alloc(target_size); /* Always offheap
+ if trapping */
+ cbs->result->flags = 0;
+ cbs->result->orig_size = target_size;
+ erts_refc_init(&(cbs->result->refc), 1);
+ t = (byte *) cbs->result->orig_bytes; /* No offset or anything */
+ pos = 0;
+ i = 0;
+ while (pos < reds) {
+ memcpy(t+pos,cbs->source, size);
+ pos += size;
+ ++i;
+ }
+ cbs->source_size = size;
+ cbs->result_pos = pos;
+ cbs->times_left = n-i;
+ hp = HAlloc(p,PROC_BIN_SIZE);
+ trap_term = erts_mk_magic_binary_term(&hp, &MSO(p), mb);
+ BUMP_ALL_REDS(p);
+ BIF_TRAP2(&binary_copy_trap_export, p, bin, trap_term);
+ } else {
+ Eterm res_term;
+ byte *temp_alloc = NULL;
+ byte *source =
+ erts_get_aligned_binary_bytes(bin,
+ &temp_alloc);
+ if (target_size <= ERL_ONHEAP_BIN_LIMIT) {
+ res_term = erts_new_heap_binary(p,NULL,target_size,&t);
+ } else {
+ res_term = erts_new_mso_binary(p,NULL,target_size);
+ t = ((ProcBin *) binary_val(res_term))->bytes;
+ }
+ pos = 0;
+ while (pos < target_size) {
+ memcpy(t+pos,source, size);
+ pos += size;
+ }
+ erts_free_aligned_binary_bytes(temp_alloc);
+ BUMP_REDS(p,pos / BINARY_COPY_LOOP_FACTOR);
+ BIF_RET(res_term);
+ }
+ badarg:
+ BIF_ERROR(p,BADARG);
+}
+
+BIF_RETTYPE binary_copy_trap(BIF_ALIST_2)
+{
+ Uint n;
+ size_t size;
+ Uint reds = get_reds(BIF_P, BINARY_COPY_LOOP_FACTOR);
+ byte *t;
+ Uint pos;
+ Binary *mb = ((ProcBin *) binary_val(BIF_ARG_2))->val;
+ CopyBinState *cbs = (CopyBinState *) ERTS_MAGIC_BIN_DATA(mb);
+ Uint opos;
+
+ /* swapout... */
+ n = cbs->times_left;
+ size = cbs->source_size;
+ opos = pos = cbs->result_pos;
+ t = (byte *) cbs->result->orig_bytes; /* "well behaved" binary */
+ if ((n-1) * size >= reds) {
+ Uint i = 0;
+ while ((pos - opos) < reds) {
+ memcpy(t+pos,cbs->source, size);
+ pos += size;
+ ++i;
+ }
+ cbs->result_pos = pos;
+ cbs->times_left -= i;
+ BUMP_ALL_REDS(BIF_P);
+ BIF_TRAP2(&binary_copy_trap_export, BIF_P, BIF_ARG_1, BIF_ARG_2);
+ } else {
+ Binary *save;
+ ProcBin* pb;
+ Uint target_size = cbs->result->orig_size;
+ while (pos < target_size) {
+ memcpy(t+pos,cbs->source, size);
+ pos += size;
+ }
+ save = cbs->result;
+ cbs->result = NULL;
+ cleanup_copy_bin_state(mb); /* now cbs is dead */
+ pb = (ProcBin *) HAlloc(BIF_P, PROC_BIN_SIZE);
+ pb->thing_word = HEADER_PROC_BIN;
+ pb->size = target_size;
+ pb->next = MSO(BIF_P).mso;
+ MSO(BIF_P).mso = pb;
+ pb->val = save;
+ pb->bytes = t;
+ pb->flags = 0;
+
+ MSO(BIF_P).overhead += target_size / sizeof(Eterm);
+ BUMP_REDS(BIF_P,(pos - opos) / BINARY_COPY_LOOP_FACTOR);
+
+ BIF_RET(make_binary(pb));
+ }
+}
+
+
+BIF_RETTYPE binary_copy_1(BIF_ALIST_1)
+{
+ return do_binary_copy(BIF_P,BIF_ARG_1,make_small(1));
+}
+
+BIF_RETTYPE binary_copy_2(BIF_ALIST_2)
+{
+ return do_binary_copy(BIF_P,BIF_ARG_1,BIF_ARG_2);
+}
+
+BIF_RETTYPE binary_referenced_byte_size_1(BIF_ALIST_1)
+{
+ ErlSubBin *sb;
+ ProcBin *pb;
+ Eterm res;
+ Eterm bin = BIF_ARG_1;
+
+ if (is_not_binary(BIF_ARG_1)) {
+ BIF_ERROR(BIF_P,BADARG);
+ }
+ sb = (ErlSubBin *) binary_val(bin);
+ if (sb->thing_word == HEADER_SUB_BIN) {
+ bin = sb->orig;
+ }
+ pb = (ProcBin *) binary_val(bin);
+ if (pb->thing_word == HEADER_PROC_BIN) {
+ res = erts_make_integer((Uint) pb->val->orig_size, BIF_P); /* XXX:PaN Halfword? orig_size is a long */
+ } else { /* heap binary */
+ res = erts_make_integer((Uint) ((ErlHeapBin *) pb)->size, BIF_P);
+ }
+ BIF_RET(res);
+}
+
+#define END_BIG 0
+#define END_SMALL 1
+
+#ifdef WORDS_BIGENDIAN
+#define END_NATIVE END_BIG
+#else
+#define END_NATIVE END_SMALL
+#endif
+
+static int get_need(Uint u) {
+#if defined(ARCH_64) && !HALFWORD_HEAP
+ if (u > 0xFFFFFFFFUL) {
+ if (u > 0xFFFFFFFFFFFFUL) {
+ if (u > 0xFFFFFFFFFFFFFFUL) {
+ return 8;
+ }
+ return 7;
+ }
+ if (u > 0xFFFFFFFFFFUL) {
+ return 6;
+ }
+ return 5;
+ }
+#endif
+ if (u > 0xFFFFUL) {
+ if (u > 0xFFFFFFUL) {
+ return 4;
+ }
+ return 3;
+ }
+ if (u > 0xFFUL) {
+ return 2;
+ }
+ return 1;
+}
+
+static BIF_RETTYPE do_encode_unsigned(Process *p, Eterm uns, Eterm endianess)
+{
+ Eterm res;
+ if ((is_not_small(uns) && is_not_big(uns)) || is_not_atom(endianess) ||
+ (endianess != am_big && endianess != am_little)) {
+ goto badarg;
+ }
+ if (is_small(uns)) {
+ Sint x = signed_val(uns);
+ Uint u;
+ int n,i;
+ byte *b;
+
+ if (x < 0) {
+ goto badarg;
+ }
+
+ u = (Uint) x;
+ n = get_need(u);
+ ASSERT(n <= ERL_ONHEAP_BIN_LIMIT);
+ res = erts_new_heap_binary(p, NULL, n, &b);
+ if (endianess == am_big) {
+ for(i=n-1;i>=0;--i) {
+ b[i] = u & 0xFF;
+ u >>= 8;
+ }
+ } else {
+ for(i=0;i<n;++i) {
+ b[i] = u & 0xFF;
+ u >>= 8;
+ }
+ }
+ BIF_RET(res);
+ } else {
+ /* Big */
+ Eterm *bigp = big_val(uns);
+ Uint n;
+ dsize_t num_parts = BIG_SIZE(bigp);
+ Eterm res;
+ byte *b;
+ ErtsDigit d;
+
+ if(BIG_SIGN(bigp)) {
+ goto badarg;
+ }
+ n = (num_parts-1)*sizeof(ErtsDigit)+get_need(BIG_DIGIT(bigp,(num_parts-1)));
+ if (n <= ERL_ONHEAP_BIN_LIMIT) {
+ res = erts_new_heap_binary(p,NULL,n,&b);
+ } else {
+ res = erts_new_mso_binary(p,NULL,n);
+ b = ((ProcBin *) binary_val(res))->bytes;
+ }
+
+ if (endianess == am_big) {
+ Sint i,j;
+ j = 0;
+ d = BIG_DIGIT(bigp,0);
+ for (i=n-1;i>=0;--i) {
+ b[i] = d & 0xFF;
+ if (!((++j) % sizeof(ErtsDigit))) {
+ d = BIG_DIGIT(bigp,j / sizeof(ErtsDigit));
+ } else {
+ d >>= 8;
+ }
+ }
+ } else {
+ Sint i,j;
+ j = 0;
+ d = BIG_DIGIT(bigp,0);
+ for (i=0;i<n;++i) {
+ b[i] = d & 0xFF;
+ if (!((++j) % sizeof(ErtsDigit))) {
+ d = BIG_DIGIT(bigp,j / sizeof(ErtsDigit));
+ } else {
+ d >>= 8;
+ }
+ }
+
+ }
+ BIF_RET(res);
+ }
+ badarg:
+ BIF_ERROR(p,BADARG);
+}
+
+static BIF_RETTYPE do_decode_unsigned(Process *p, Eterm uns, Eterm endianess)
+{
+ byte *bytes;
+ Uint bitoffs, bitsize;
+ Uint size;
+ Eterm res;
+
+ if (is_not_binary(uns) || is_not_atom(endianess) ||
+ (endianess != am_big && endianess != am_little)) {
+ goto badarg;
+ }
+ ERTS_GET_BINARY_BYTES(uns, bytes, bitoffs, bitsize);
+ if (bitsize != 0) {
+ goto badarg;
+ }
+ /* align while rolling */
+ size = binary_size(uns);
+ if (bitoffs) {
+ if (endianess == am_big) {
+ while (size && (((((Uint) bytes[0]) << bitoffs) |
+ (((Uint) bytes[1]) >> (8-bitoffs))) & 0xFF) == 0) {
+ ++bytes;
+ --size;
+ }
+ } else {
+ while(size &&
+ (((((Uint) bytes[size-1]) << bitoffs) |
+ (((Uint) bytes[size]) >> (8-bitoffs))) & 0xFF) == 0) {
+ --size;
+ }
+ }
+ } else {
+ if (endianess == am_big) {
+ while (size && *bytes == 0) {
+ ++bytes;
+ --size;
+ }
+ } else {
+ while(size && bytes[size-1] == 0) {
+ --size;
+ }
+ }
+ }
+ if (!size) {
+ BIF_RET(make_small(0));
+ }
+
+ if (size <= sizeof(Uint)) {
+ Uint u = 0;
+ Sint i;
+
+ if (endianess == am_big) {
+ if (bitoffs) {
+ for(i=0;i<size;++i) {
+ u <<=8;
+ u |= (((((Uint) bytes[i]) << bitoffs) |
+ (((Uint) bytes[i+1]) >> (8-bitoffs))) & 0xFF);
+ }
+ } else {
+ for(i=0;i<size;++i) {
+ u <<=8;
+ u |= bytes[i];
+ }
+ }
+ } else {
+
+ if (bitoffs) {
+ for(i=size-1;i>=0;--i) {
+ u <<=8;
+ u |= (((((Uint) bytes[i]) << bitoffs) |
+ (((Uint) bytes[i+1]) >> (8-bitoffs))) & 0xFF);
+ }
+ } else {
+ for(i=size-1;i>=0;--i) {
+ u <<=8;
+ u |= bytes[i];
+ }
+ }
+ }
+ res = erts_make_integer(u,p);
+ BIF_RET(res);
+ } else {
+ /* Assume big, as we stripped away all zeroes from the MSB part of the binary */
+ dsize_t num_parts = size / sizeof(ErtsDigit) + !!(size % sizeof(ErtsDigit));
+ Eterm *bigp;
+
+ bigp = HAlloc(p, BIG_NEED_SIZE(num_parts));
+ *bigp = make_pos_bignum_header(num_parts);
+ res = make_big(bigp);
+
+ if (endianess == am_big) {
+ Sint i,j;
+ ErtsDigit *d;
+ j = size;
+ d = &(BIG_DIGIT(bigp,num_parts - 1));
+ *d = 0;
+ i = 0;
+ if(bitoffs) {
+ for (;;){
+ (*d) <<= 8;
+ (*d) |= (((((Uint) bytes[i]) << bitoffs) |
+ (((Uint) bytes[i+1]) >> (8-bitoffs))) & 0xFF);
+ if (++i >= size) {
+ break;
+ }
+ if (!(--j % sizeof(ErtsDigit))) {
+ --d;
+ *d = 0;
+ }
+ }
+ } else {
+ for (;;){
+ (*d) <<= 8;
+ (*d) |= bytes[i];
+ if (++i >= size) {
+ break;
+ }
+ if (!(--j % sizeof(ErtsDigit))) {
+ --d;
+ *d = 0;
+ }
+ }
+ }
+ } else {
+ Sint i,j;
+ ErtsDigit *d;
+ j = size;
+ d = &(BIG_DIGIT(bigp,num_parts - 1));
+ *d = 0;
+ i = size-1;
+ if (bitoffs) {
+ for (;;){
+ (*d) <<= 8;
+ (*d) |= (((((Uint) bytes[i]) << bitoffs) |
+ (((Uint) bytes[i+1]) >> (8-bitoffs))) & 0xFF);
+ if (--i < 0) {
+ break;
+ }
+ if (!(--j % sizeof(ErtsDigit))) {
+ --d;
+ *d = 0;
+ }
+ }
+ } else {
+ for (;;){
+ (*d) <<= 8;
+ (*d) |= bytes[i];
+ if (--i < 0) {
+ break;
+ }
+ if (!(--j % sizeof(ErtsDigit))) {
+ --d;
+ *d = 0;
+ }
+ }
+ }
+ }
+ BIF_RET(res);
+ }
+ badarg:
+ BIF_ERROR(p,BADARG);
+}
+
+BIF_RETTYPE binary_encode_unsigned_1(BIF_ALIST_1)
+{
+ return do_encode_unsigned(BIF_P,BIF_ARG_1,am_big);
+}
+
+BIF_RETTYPE binary_encode_unsigned_2(BIF_ALIST_2)
+{
+ return do_encode_unsigned(BIF_P,BIF_ARG_1,BIF_ARG_2);
+}
+
+BIF_RETTYPE binary_decode_unsigned_1(BIF_ALIST_1)
+{
+ return do_decode_unsigned(BIF_P,BIF_ARG_1,am_big);
+}
+
+BIF_RETTYPE binary_decode_unsigned_2(BIF_ALIST_2)
+{
+ return do_decode_unsigned(BIF_P,BIF_ARG_1,BIF_ARG_2);
+}
+
+/*
+ * Hard debug functions (dump) for the search structures
+ */
+
+#ifdef HARDDEBUG
+static void dump_bm_data(BMData *bm)
+{
+ int i,j;
+ erts_printf("Dumping Boyer-More structure.\n");
+ erts_printf("=============================\n");
+ erts_printf("Searchstring [%ld]:\n", bm->len);
+ erts_printf("<<");
+ for (i = 0; i < bm->len; ++i) {
+ if (i > 0) {
+ erts_printf(", ");
+ }
+ erts_printf("%d", (int) bm->x[i]);
+ if (bm->x[i] >= 'A') {
+ erts_printf(" ($%c)",(char) bm->x[i]);
+ }
+ }
+ erts_printf(">>\n");
+ erts_printf("GoodShift array:\n");
+ for (i = 0; i < bm->len; ++i) {
+ erts_printf("GoodShift[%d]: %ld\n", i, bm->goodshift[i]);
+ }
+ erts_printf("BadShift array:\n");
+ j = 0;
+ for (i = 0; i < ALPHABET_SIZE; i += j) {
+ for (j = 0; i + j < ALPHABET_SIZE && j < 6; ++j) {
+ erts_printf("BS[%03d]:%02ld, ", i+j, bm->badshift[i+j]);
+ }
+ erts_printf("\n");
+ }
+}
+
+static void dump_ac_node(ACNode *node, int indent, int ch) {
+ int i;
+ char *spaces = erts_alloc(ERTS_ALC_T_TMP, 10 * indent + 1);
+ memset(spaces,' ',10*indent);
+ spaces[10*indent] = '\0';
+ erts_printf("%s-> %c\n",spaces,ch);
+ erts_printf("%sId: %u\n",spaces,(unsigned) node->id);
+ erts_printf("%sD: %u\n",spaces,(unsigned)node->d);
+ erts_printf("%sFinal: %d\n",spaces,(int)node->final);
+ erts_printf("%sFail: %u\n",spaces,(unsigned)node->h->id);
+ erts_free(ERTS_ALC_T_TMP,spaces);
+ for(i=0;i<ALPHABET_SIZE;++i) {
+ if (node->g[i] != NULL && node->g[i] != node) {
+ dump_ac_node(node->g[i],indent+1,i);
+ }
+ }
+}
+
+
+static void dump_ac_trie(ACTrie *act)
+{
+ erts_printf("Aho Corasick Trie dump.\n");
+ erts_printf("=======================\n");
+ erts_printf("Node counter: %u\n", (unsigned) act->idc);
+ erts_printf("Searchstring counter: %u\n", (unsigned) act->counter);
+ erts_printf("Trie:\n");
+ dump_ac_node(act->root, 0, '0');
+ return;
+}
+#endif
diff --git a/erts/emulator/beam/erl_bif_guard.c b/erts/emulator/beam/erl_bif_guard.c
index 440b0b4f14..01e6977a2c 100644
--- a/erts/emulator/beam/erl_bif_guard.c
+++ b/erts/emulator/beam/erl_bif_guard.c
@@ -314,6 +314,30 @@ double_to_integer(Process* p, double x)
return res;
}
+/********************************************************************************
+ * binary_part guards. The actual implementation is in erl_bif_binary.c
+ ********************************************************************************/
+BIF_RETTYPE binary_part_3(BIF_ALIST_3)
+{
+ return erts_binary_part(BIF_P,BIF_ARG_1,BIF_ARG_2, BIF_ARG_3);
+}
+
+BIF_RETTYPE binary_part_2(BIF_ALIST_2)
+{
+ Eterm *tp;
+ if (is_not_tuple(BIF_ARG_2)) {
+ goto badarg;
+ }
+ tp = tuple_val(BIF_ARG_2);
+ if (arityval(*tp) != 2) {
+ goto badarg;
+ }
+ return erts_binary_part(BIF_P,BIF_ARG_1,tp[1], tp[2]);
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+
/*
* The following code is used when a guard that may build on the
* heap is called directly. They must not use HAlloc(), but must
@@ -630,3 +654,16 @@ gc_double_to_integer(Process* p, double x, Eterm* reg, Uint live)
}
return res;
}
+
+/********************************************************************************
+ * binary_part guards. The actual implementation is in erl_bif_binary.c
+ ********************************************************************************/
+Eterm erts_gc_binary_part_3(Process* p, Eterm* reg, Uint live)
+{
+ return erts_gc_binary_part(p,reg,live,0);
+}
+
+Eterm erts_gc_binary_part_2(Process* p, Eterm* reg, Uint live)
+{
+ return erts_gc_binary_part(p,reg,live,1);
+}
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 18cb09d8cd..de60ca49fa 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -3567,6 +3567,17 @@ BIF_RETTYPE erts_debug_set_internal_state_2(BIF_ALIST_2)
}
}
}
+ else if (ERTS_IS_ATOM_STR("binary_loop_limit", BIF_ARG_1)) {
+ /* Used by binary_module_SUITE (stdlib) */
+ Uint max_loops;
+ if (is_atom(BIF_ARG_2) && ERTS_IS_ATOM_STR("default", BIF_ARG_2)) {
+ max_loops = erts_binary_set_loop_limit(-1);
+ BIF_RET(make_small(max_loops));
+ } else if (term_to_Uint(BIF_ARG_2, &max_loops) != 0) {
+ max_loops = erts_binary_set_loop_limit(max_loops);
+ BIF_RET(make_small(max_loops));
+ }
+ }
else if (ERTS_IS_ATOM_STR("re_loop_limit", BIF_ARG_1)) {
/* Used by re_SUITE (stdlib) */
Uint max_loops;
diff --git a/erts/emulator/beam/erl_binary.h b/erts/emulator/beam/erl_binary.h
index 5b0b3bcec2..a569fe2e85 100644
--- a/erts/emulator/beam/erl_binary.h
+++ b/erts/emulator/beam/erl_binary.h
@@ -21,6 +21,7 @@
#define __ERL_BINARY_H
#include "erl_threads.h"
+#include "bif.h"
/*
* Maximum number of bytes to place in a heap binary.
@@ -150,7 +151,16 @@ do { \
void erts_init_binary(void);
-byte* erts_get_aligned_binary_bytes_extra(Eterm, byte**, unsigned extra);
+byte* erts_get_aligned_binary_bytes_extra(Eterm, byte**, ErtsAlcType_t, unsigned extra);
+
+/*
+ * Common implementation for erlang:list_to_binary/1 and binary:list_to_bin/1
+ */
+
+BIF_RETTYPE erts_list_to_binary_bif(Process *p, Eterm arg);
+BIF_RETTYPE erts_gc_binary_part(Process *p, Eterm *reg, Eterm live, int range_is_tuple);
+BIF_RETTYPE erts_binary_part(Process *p, Eterm binary, Eterm epos, Eterm elen);
+
#if defined(__i386__) || !defined(__GNUC__)
/*
@@ -168,6 +178,7 @@ byte* erts_get_aligned_binary_bytes_extra(Eterm, byte**, unsigned extra);
ERTS_GLB_INLINE byte* erts_get_aligned_binary_bytes(Eterm bin, byte** base_ptr);
ERTS_GLB_INLINE void erts_free_aligned_binary_bytes(byte* buf);
+ERTS_GLB_INLINE void erts_free_aligned_binary_bytes_extra(byte* buf, ErtsAlcType_t);
ERTS_GLB_INLINE Binary *erts_bin_drv_alloc_fnf(Uint size);
ERTS_GLB_INLINE Binary *erts_bin_drv_alloc(Uint size);
ERTS_GLB_INLINE Binary *erts_bin_nrml_alloc(Uint size);
@@ -184,17 +195,23 @@ ERTS_GLB_INLINE Binary *erts_create_magic_binary(Uint size,
ERTS_GLB_INLINE byte*
erts_get_aligned_binary_bytes(Eterm bin, byte** base_ptr)
{
- return erts_get_aligned_binary_bytes_extra(bin, base_ptr, 0);
+ return erts_get_aligned_binary_bytes_extra(bin, base_ptr, ERTS_ALC_T_TMP, 0);
}
ERTS_GLB_INLINE void
-erts_free_aligned_binary_bytes(byte* buf)
+erts_free_aligned_binary_bytes_extra(byte* buf, ErtsAlcType_t allocator)
{
if (buf) {
- erts_free(ERTS_ALC_T_TMP, (void *) buf);
+ erts_free(allocator, (void *) buf);
}
}
+ERTS_GLB_INLINE void
+erts_free_aligned_binary_bytes(byte* buf)
+{
+ erts_free_aligned_binary_bytes_extra(buf,ERTS_ALC_T_TMP);
+}
+
/* Explicit extra bytes allocated to counter buggy drivers.
** These extra bytes where earlier (< R13B04) added by an alignment-bug
** in this code. Do we dare remove this in some major release (R14?) maybe?
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index e63ec8a3cc..f2e71ae98d 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -281,6 +281,7 @@ erl_init(void)
init_load();
erts_init_bif();
erts_init_bif_chksum();
+ erts_init_bif_binary();
erts_init_bif_re();
erts_init_unicode(); /* after RE to get access to PCRE unicode */
erts_delay_trap = erts_export_put(am_erlang, am_delay_trap, 2);
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 2790020117..cee4df72a2 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -250,7 +250,7 @@ int enif_is_ref(ErlNifEnv* env, ERL_NIF_TERM term)
static void aligned_binary_dtor(struct enif_tmp_obj_t* obj)
{
- erts_free_aligned_binary_bytes((byte*)obj);
+ erts_free_aligned_binary_bytes_extra((byte*)obj,ERTS_ALC_T_TMP);
}
int enif_inspect_binary(ErlNifEnv* env, Eterm bin_term, ErlNifBinary* bin)
@@ -260,7 +260,7 @@ int enif_inspect_binary(ErlNifEnv* env, Eterm bin_term, ErlNifBinary* bin)
byte* raw_ptr;
}u;
u.tmp = NULL;
- bin->data = erts_get_aligned_binary_bytes_extra(bin_term, &u.raw_ptr,
+ bin->data = erts_get_aligned_binary_bytes_extra(bin_term, &u.raw_ptr, ERTS_ALC_T_TMP,
sizeof(struct enif_tmp_obj_t));
if (bin->data == NULL) {
return 0;
diff --git a/erts/emulator/beam/erl_vm.h b/erts/emulator/beam/erl_vm.h
index 235bd7931d..eeeeb7ccfd 100644
--- a/erts/emulator/beam/erl_vm.h
+++ b/erts/emulator/beam/erl_vm.h
@@ -61,8 +61,9 @@
/*
* The new arithmetic operations need some extra X registers in the register array.
+ * so does the gc_bif's (i_gc_bif3 need 3 extra).
*/
-#define ERTS_X_REGS_ALLOCATED (MAX_REG+2)
+#define ERTS_X_REGS_ALLOCATED (MAX_REG+3)
#define INPUT_REDUCTIONS (2 * CONTEXT_REDS)
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index fbb40e4202..a7990e1799 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -1576,6 +1576,10 @@ void erts_init_bif_chksum(void);
/* erl_bif_re.c */
void erts_init_bif_re(void);
Sint erts_re_set_loop_limit(Sint limit);
+/* erl_bif_binary.c */
+void erts_init_bif_binary(void);
+Sint erts_binary_set_loop_limit(Sint limit);
+
/* erl_unicode.c */
void erts_init_unicode(void);
Sint erts_unicode_set_loop_limit(Sint limit);
@@ -1705,6 +1709,8 @@ Eterm erts_gc_abs_1(Process* p, Eterm* reg, Uint live);
Eterm erts_gc_float_1(Process* p, Eterm* reg, Uint live);
Eterm erts_gc_round_1(Process* p, Eterm* reg, Uint live);
Eterm erts_gc_trunc_1(Process* p, Eterm* reg, Uint live);
+Eterm erts_gc_binary_part_3(Process* p, Eterm* reg, Uint live);
+Eterm erts_gc_binary_part_2(Process* p, Eterm* reg, Uint live);
Uint erts_current_reductions(Process* current, Process *p);
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab
index 49280a60e0..d6feef3fb9 100644
--- a/erts/emulator/beam/ops.tab
+++ b/erts/emulator/beam/ops.tab
@@ -1390,33 +1390,50 @@ bif1 Fail u$bif:erlang:trunc/1 s d => too_old_compiler
# Guard BIFs.
#
gc_bif1 Fail I Bif=u$bif:erlang:length/1 Src Dst=d => \
- gen_guard_bif(Fail, I, Bif, Src, Dst)
+ gen_guard_bif1(Fail, I, Bif, Src, Dst)
gc_bif1 Fail I Bif=u$bif:erlang:size/1 Src Dst=d => \
- gen_guard_bif(Fail, I, Bif, Src, Dst)
+ gen_guard_bif1(Fail, I, Bif, Src, Dst)
gc_bif1 Fail I Bif=u$bif:erlang:bit_size/1 Src Dst=d => \
- gen_guard_bif(Fail, I, Bif, Src, Dst)
+ gen_guard_bif1(Fail, I, Bif, Src, Dst)
gc_bif1 Fail I Bif=u$bif:erlang:byte_size/1 Src Dst=d => \
- gen_guard_bif(Fail, I, Bif, Src, Dst)
+ gen_guard_bif1(Fail, I, Bif, Src, Dst)
gc_bif1 Fail I Bif=u$bif:erlang:abs/1 Src Dst=d => \
- gen_guard_bif(Fail, I, Bif, Src, Dst)
+ gen_guard_bif1(Fail, I, Bif, Src, Dst)
gc_bif1 Fail I Bif=u$bif:erlang:float/1 Src Dst=d => \
- gen_guard_bif(Fail, I, Bif, Src, Dst)
+ gen_guard_bif1(Fail, I, Bif, Src, Dst)
gc_bif1 Fail I Bif=u$bif:erlang:round/1 Src Dst=d => \
- gen_guard_bif(Fail, I, Bif, Src, Dst)
+ gen_guard_bif1(Fail, I, Bif, Src, Dst)
gc_bif1 Fail I Bif=u$bif:erlang:trunc/1 Src Dst=d => \
- gen_guard_bif(Fail, I, Bif, Src, Dst)
+ gen_guard_bif1(Fail, I, Bif, Src, Dst)
+
+gc_bif2 Fail I Bif=u$bif:erlang:binary_part/2 S1 S2 Dst=d => \
+ gen_guard_bif2(Fail, I, Bif, S1, S2, Dst)
+
+gc_bif3 Fail I Bif=u$bif:erlang:binary_part/3 S1 S2 S3 Dst=d => \
+ gen_guard_bif3(Fail, I, Bif, S1, S2, S3, Dst)
i_gc_bif1 Fail Bif V=q Live D => move V x | i_gc_bif1 Fail Bif x Live D
i_gc_bif1 j I s I d
+ii_gc_bif2/6
+
+ii_gc_bif2 Fail Bif S1 S2 Live D => i_fetch S1 S2 | i_gc_bif2 Fail Bif Live D
+
+i_gc_bif2 j I I d
+
+ii_gc_bif3/7
+
+ii_gc_bif3 Fail Bif S1 S2 S3 Live D => move S1 x | i_fetch S2 S3 | i_gc_bif3 Fail Bif x Live D
+
+i_gc_bif3 j I s I d
#
# R13B03
#
diff --git a/erts/emulator/test/Makefile b/erts/emulator/test/Makefile
index 2424fedbed..97b94c466f 100644
--- a/erts/emulator/test/Makefile
+++ b/erts/emulator/test/Makefile
@@ -118,7 +118,8 @@ NO_OPT= bs_bincomp \
bs_match_int \
bs_match_tail \
bs_match_misc \
- bs_utf
+ bs_utf \
+ guard
NO_OPT_MODULES= $(NO_OPT:%=%_no_opt_SUITE)
diff --git a/erts/emulator/test/guard_SUITE.erl b/erts/emulator/test/guard_SUITE.erl
index 23482a20d7..8fef36dfaf 100644
--- a/erts/emulator/test/guard_SUITE.erl
+++ b/erts/emulator/test/guard_SUITE.erl
@@ -1,33 +1,34 @@
%%
%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1997-2009. All Rights Reserved.
-%%
+%%
+%% Copyright Ericsson AB 1997-2010. All Rights Reserved.
+%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
-%%
+%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
-%%
+%%
%% %CopyrightEnd%
%%
-module(guard_SUITE).
-export([all/1, bad_arith/1, bad_tuple/1, test_heap_guards/1, guard_bifs/1,
- type_tests/1]).
+ type_tests/1,guard_bif_binary_part/1]).
-include("test_server.hrl").
-export([init/3]).
-import(lists, [member/2]).
-all(suite) -> [bad_arith, bad_tuple, test_heap_guards, guard_bifs, type_tests].
+all(suite) -> [bad_arith, bad_tuple, test_heap_guards, guard_bifs,
+ type_tests, guard_bif_binary_part].
bad_arith(doc) -> "Test that a bad arithmetic operation in a guard works correctly.";
bad_arith(Config) when is_list(Config) ->
@@ -136,6 +137,170 @@ init(Fun, Args, Filler) ->
dummy(_) ->
ok.
+-define(MASK_ERROR(EXPR),mask_error((catch (EXPR)))).
+mask_error({'EXIT',{Err,_}}) ->
+ Err;
+mask_error(Else) ->
+ Else.
+
+guard_bif_binary_part(doc) ->
+ ["Test the binary_part/2,3 guard BIF's extensively"];
+guard_bif_binary_part(Config) when is_list(Config) ->
+ %% Overflow tests that need to be unoptimized
+ ?line badarg =
+ ?MASK_ERROR(
+ binary_part(<<1,2,3>>,{16#FFFFFFFFFFFFFFFF,
+ -16#7FFFFFFFFFFFFFFF-1})),
+ ?line badarg =
+ ?MASK_ERROR(
+ binary_part(<<1,2,3>>,{16#FFFFFFFFFFFFFFFF,
+ 16#7FFFFFFFFFFFFFFF})),
+ F = fun(X) ->
+ Master = self(),
+ {Pid,Ref} = spawn_monitor( fun() ->
+ A = lists:duplicate(X,a),
+ B = [do_binary_part_guard() | A],
+ Master ! {self(),hd(B)},
+ ok
+ end),
+ receive
+ {Pid,ok} ->
+ erlang:demonitor(Ref,[flush]),
+ ok;
+ Error ->
+ Error
+ end
+ end,
+ [ ok = F(N) || N <- lists:seq(1,10000) ],
+ ok.
+
+
+do_binary_part_guard() ->
+ ?line 1 = bptest(<<1,2,3>>),
+ ?line 2 = bptest(<<2,1,3>>),
+ ?line error = bptest(<<1>>),
+ ?line error = bptest(<<>>),
+ ?line error = bptest(apa),
+ ?line 3 = bptest(<<2,3,3>>),
+ % With one variable (pos)
+ ?line 1 = bptest(<<1,2,3>>,1),
+ ?line 2 = bptest(<<2,1,3>>,1),
+ ?line error = bptest(<<1>>,1),
+ ?line error = bptest(<<>>,1),
+ ?line error = bptest(apa,1),
+ ?line 3 = bptest(<<2,3,3>>,1),
+ % With one variable (length)
+ ?line 1 = bptesty(<<1,2,3>>,1),
+ ?line 2 = bptesty(<<2,1,3>>,1),
+ ?line error = bptesty(<<1>>,1),
+ ?line error = bptesty(<<>>,1),
+ ?line error = bptesty(apa,1),
+ ?line 3 = bptesty(<<2,3,3>>,2),
+ % With one variable (whole tuple)
+ ?line 1 = bptestx(<<1,2,3>>,{1,1}),
+ ?line 2 = bptestx(<<2,1,3>>,{1,1}),
+ ?line error = bptestx(<<1>>,{1,1}),
+ ?line error = bptestx(<<>>,{1,1}),
+ ?line error = bptestx(apa,{1,1}),
+ ?line 3 = bptestx(<<2,3,3>>,{1,2}),
+ % With two variables
+ ?line 1 = bptest(<<1,2,3>>,1,1),
+ ?line 2 = bptest(<<2,1,3>>,1,1),
+ ?line error = bptest(<<1>>,1,1),
+ ?line error = bptest(<<>>,1,1),
+ ?line error = bptest(apa,1,1),
+ ?line 3 = bptest(<<2,3,3>>,1,2),
+ % Direct (autoimported) call, these will be evaluated by the compiler...
+ ?line <<2>> = binary_part(<<1,2,3>>,1,1),
+ ?line <<1>> = binary_part(<<2,1,3>>,1,1),
+ % Compiler warnings due to constant evaluation expected (3)
+ ?line badarg = ?MASK_ERROR(binary_part(<<1>>,1,1)),
+ ?line badarg = ?MASK_ERROR(binary_part(<<>>,1,1)),
+ ?line badarg = ?MASK_ERROR(binary_part(apa,1,1)),
+ ?line <<3,3>> = binary_part(<<2,3,3>>,1,2),
+ % Direct call through apply
+ ?line <<2>> = apply(erlang,binary_part,[<<1,2,3>>,1,1]),
+ ?line <<1>> = apply(erlang,binary_part,[<<2,1,3>>,1,1]),
+ % Compiler warnings due to constant evaluation expected (3)
+ ?line badarg = ?MASK_ERROR(apply(erlang,binary_part,[<<1>>,1,1])),
+ ?line badarg = ?MASK_ERROR(apply(erlang,binary_part,[<<>>,1,1])),
+ ?line badarg = ?MASK_ERROR(apply(erlang,binary_part,[apa,1,1])),
+ ?line <<3,3>> = apply(erlang,binary_part,[<<2,3,3>>,1,2]),
+ % Constant propagation
+ ?line Bin = <<1,2,3>>,
+ ?line ok = if
+ binary_part(Bin,1,1) =:= <<2>> ->
+ ok;
+ %% Compiler warning, clause cannot match (expected)
+ true ->
+ error
+ end,
+ ?line ok = if
+ binary_part(Bin,{1,1}) =:= <<2>> ->
+ ok;
+ %% Compiler warning, clause cannot match (expected)
+ true ->
+ error
+ end,
+ ok.
+
+
+bptest(B) when length(B) =:= 1337 ->
+ 1;
+bptest(B) when binary_part(B,{1,1}) =:= <<2>> ->
+ 1;
+bptest(B) when erlang:binary_part(B,1,1) =:= <<1>> ->
+ 2;
+bptest(B) when erlang:binary_part(B,{1,2}) =:= <<3,3>> ->
+ 3;
+bptest(_) ->
+ error.
+
+bptest(B,A) when length(B) =:= A ->
+ 1;
+bptest(B,A) when binary_part(B,{A,1}) =:= <<2>> ->
+ 1;
+bptest(B,A) when erlang:binary_part(B,A,1) =:= <<1>> ->
+ 2;
+bptest(B,A) when erlang:binary_part(B,{A,2}) =:= <<3,3>> ->
+ 3;
+bptest(_,_) ->
+ error.
+
+bptestx(B,A) when length(B) =:= A ->
+ 1;
+bptestx(B,A) when binary_part(B,A) =:= <<2>> ->
+ 1;
+bptestx(B,A) when erlang:binary_part(B,A) =:= <<1>> ->
+ 2;
+bptestx(B,A) when erlang:binary_part(B,A) =:= <<3,3>> ->
+ 3;
+bptestx(_,_) ->
+ error.
+
+bptesty(B,A) when length(B) =:= A ->
+ 1;
+bptesty(B,A) when binary_part(B,{1,A}) =:= <<2>> ->
+ 1;
+bptesty(B,A) when erlang:binary_part(B,1,A) =:= <<1>> ->
+ 2;
+bptesty(B,A) when erlang:binary_part(B,{1,A}) =:= <<3,3>> ->
+ 3;
+bptesty(_,_) ->
+ error.
+
+bptest(B,A,_C) when length(B) =:= A ->
+ 1;
+bptest(B,A,C) when binary_part(B,{A,C}) =:= <<2>> ->
+ 1;
+bptest(B,A,C) when erlang:binary_part(B,A,C) =:= <<1>> ->
+ 2;
+bptest(B,A,C) when erlang:binary_part(B,{A,C}) =:= <<3,3>> ->
+ 3;
+bptest(_,_,_) ->
+ error.
+
+
guard_bifs(doc) -> "Test all guard bifs with nasty (but legal arguments).";
guard_bifs(Config) when is_list(Config) ->
?line Big = -237849247829874297658726487367328971246284736473821617265433,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 22:55:09 +0000