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-rw-r--r--erts/emulator/beam/beam_bp.c85
-rw-r--r--erts/emulator/beam/erl_bif_port.c2
-rw-r--r--erts/emulator/beam/erl_process.c6
-rw-r--r--erts/emulator/beam/erl_unicode.c58
-rw-r--r--erts/emulator/beam/global.h2
5 files changed, 61 insertions, 92 deletions
diff --git a/erts/emulator/beam/beam_bp.c b/erts/emulator/beam/beam_bp.c
index 950639f7ae..069e7391fd 100644
--- a/erts/emulator/beam/beam_bp.c
+++ b/erts/emulator/beam/beam_bp.c
@@ -642,6 +642,49 @@ erts_clear_export_break(Module* modp, ErtsCodeInfo *ci)
ASSERT(ci->u.gen_bp == NULL);
}
+/*
+ * If c_p->cp is a trace return instruction, we set cp
+ * to be the place where we again start to execute code.
+ *
+ * cp is used by match spec {caller} to get the calling
+ * function, and if we don't do this fixup it will be
+ * 'undefined'. This has the odd side effect of {caller}
+ * not really being which function is the caller, but
+ * rather which function we are about to return to.
+ */
+static void fixup_cp_before_trace(Process *c_p, int *return_to_trace)
+{
+ Eterm *cpp, *E = c_p->stop;
+ BeamInstr w = *c_p->cp;
+ if (w == (BeamInstr) BeamOp(op_return_trace)) {
+ cpp = &E[2];
+ } else if (w == (BeamInstr) BeamOp(op_i_return_to_trace)) {
+ *return_to_trace = 1;
+ cpp = &E[0];
+ } else if (w == (BeamInstr) BeamOp(op_i_return_time_trace)) {
+ cpp = &E[0];
+ } else {
+ cpp = NULL;
+ }
+ if (cpp) {
+ for (;;) {
+ BeamInstr w = *cp_val(*cpp);
+ if (w == (BeamInstr) BeamOp(op_return_trace)) {
+ cpp += 3;
+ } else if (w == (BeamInstr) BeamOp(op_i_return_to_trace)) {
+ *return_to_trace = 1;
+ cpp += 1;
+ } else if (w == (BeamInstr) BeamOp(op_i_return_time_trace)) {
+ cpp += 2;
+ } else {
+ break;
+ }
+ }
+ c_p->cp = (BeamInstr *) cp_val(*cpp);
+ ASSERT(is_CP(*cpp));
+ }
+}
+
BeamInstr
erts_generic_breakpoint(Process* c_p, ErtsCodeInfo *info, Eterm* reg)
{
@@ -752,6 +795,7 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
GenericBp* g;
GenericBpData* bp = NULL;
Uint bp_flags = 0;
+ int return_to_trace = 0;
ERTS_SMP_CHK_HAVE_ONLY_MAIN_PROC_LOCK(p);
@@ -767,6 +811,8 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
*/
if (!applying) {
p->cp = I;
+ } else {
+ fixup_cp_before_trace(p, &return_to_trace);
}
if (bp_flags & (ERTS_BPF_LOCAL_TRACE|ERTS_BPF_GLOBAL_TRACE) &&
IS_TRACED_FL(p, F_TRACE_CALLS)) {
@@ -945,49 +991,20 @@ static ErtsTracer
do_call_trace(Process* c_p, ErtsCodeInfo* info, Eterm* reg,
int local, Binary* ms, ErtsTracer tracer)
{
- Eterm* cpp;
int return_to_trace = 0;
- BeamInstr w;
BeamInstr *cp_save = c_p->cp;
Uint32 flags;
Uint need = 0;
Eterm* E = c_p->stop;
- w = *c_p->cp;
- if (w == (BeamInstr) BeamOp(op_return_trace)) {
- cpp = &E[2];
- } else if (w == (BeamInstr) BeamOp(op_i_return_to_trace)) {
- return_to_trace = 1;
- cpp = &E[0];
- } else if (w == (BeamInstr) BeamOp(op_i_return_time_trace)) {
- cpp = &E[0];
- } else {
- cpp = NULL;
- }
- if (cpp) {
- for (;;) {
- BeamInstr w = *cp_val(*cpp);
- if (w == (BeamInstr) BeamOp(op_return_trace)) {
- cpp += 3;
- } else if (w == (BeamInstr) BeamOp(op_i_return_to_trace)) {
- return_to_trace = 1;
- cpp += 1;
- } else if (w == (BeamInstr) BeamOp(op_i_return_time_trace)) {
- cpp += 2;
- } else {
- break;
- }
- }
- cp_save = c_p->cp;
- c_p->cp = (BeamInstr *) cp_val(*cpp);
- ASSERT(is_CP(*cpp));
- }
+ fixup_cp_before_trace(c_p, &return_to_trace);
+
ERTS_SMP_UNREQ_PROC_MAIN_LOCK(c_p);
flags = erts_call_trace(c_p, info, ms, reg, local, &tracer);
ERTS_SMP_REQ_PROC_MAIN_LOCK(c_p);
- if (cpp) {
- c_p->cp = cp_save;
- }
+
+ /* restore cp after potential fixup */
+ c_p->cp = cp_save;
ASSERT(!ERTS_PROC_IS_EXITING(c_p));
if ((flags & MATCH_SET_RETURN_TO_TRACE) && !return_to_trace) {
diff --git a/erts/emulator/beam/erl_bif_port.c b/erts/emulator/beam/erl_bif_port.c
index 1121a450cd..ff03151619 100644
--- a/erts/emulator/beam/erl_bif_port.c
+++ b/erts/emulator/beam/erl_bif_port.c
@@ -1084,7 +1084,7 @@ static byte* convert_environment(Process* p, Eterm env)
goto done;
}
- if ((size = erts_native_filename_need(all, encoding, 1)) < 0) {
+ if ((size = erts_native_filename_need(all,encoding)) < 0) {
goto done;
}
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index b72bac00c1..1ce2b5071c 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -13307,9 +13307,9 @@ send_exit_signal(Process *c_p, /* current process if and only
if ((state & ERTS_PSFLG_TRAP_EXIT)
&& (reason != am_kill || (flags & ERTS_XSIG_FLG_IGN_KILL))) {
- /* have to release the status lock in order to send the exit message */
- erts_smp_proc_unlock(rp, *rp_locks & ERTS_PROC_LOCKS_XSIG_SEND);
- *rp_locks &= ~ERTS_PROC_LOCKS_XSIG_SEND;
+ /* have to release the status and trace lock in order to send the exit message */
+ erts_smp_proc_unlock(rp, *rp_locks & (ERTS_PROC_LOCKS_XSIG_SEND|ERTS_PROC_LOCK_TRACE));
+ *rp_locks &= ~(ERTS_PROC_LOCKS_XSIG_SEND|ERTS_PROC_LOCK_TRACE);
if (have_seqtrace(token) && token_update)
seq_trace_update_send(token_update);
if (is_value(exit_tuple))
diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c
index efd2ca3db2..2d1d1443a7 100644
--- a/erts/emulator/beam/erl_unicode.c
+++ b/erts/emulator/beam/erl_unicode.c
@@ -1988,7 +1988,7 @@ char *erts_convert_filename_to_encoding(Eterm name, char *statbuf, size_t statbu
is_list(name) ||
(allow_empty && is_nil(name))) {
Sint need;
- if ((need = erts_native_filename_need(name, encoding, 0)) < 0) {
+ if ((need = erts_native_filename_need(name,encoding)) < 0) {
return NULL;
}
if (encoding == ERL_FILENAME_WIN_WCHAR) {
@@ -2152,13 +2152,12 @@ Eterm erts_convert_native_to_filename(Process *p, byte *bytes)
}
-Sint erts_native_filename_need(Eterm ioterm, int encoding, int allow_null)
+Sint erts_native_filename_need(Eterm ioterm, int encoding)
{
Eterm *objp;
Eterm obj;
DECLARE_ESTACK(stack);
Sint need = 0;
- int seen_null = 0;
if (is_atom(ioterm)) {
Atom* ap;
@@ -2195,24 +2194,6 @@ Sint erts_native_filename_need(Eterm ioterm, int encoding, int allow_null)
default:
need = -1;
}
- if (!allow_null) {
- /*
- * Do not allow null in
- * the middle of filenames
- */
- if (need > 0) {
- byte *name = ap->name;
- int len = ap->len;
- for (i = 0; i < len; i++) {
- if (name[i] == 0)
- seen_null = 1;
- else if (seen_null) {
- need = -1;
- break;
- }
- }
- }
- }
DESTROY_ESTACK(stack);
return need;
}
@@ -2243,18 +2224,6 @@ L_Again: /* Restart with sublist, old listend was pushed on stack */
if (is_small(obj)) { /* Always small */
for(;;) {
Uint x = unsigned_val(obj);
- if (!allow_null) {
- /*
- * Do not allow null in
- * the middle of filenames
- */
- if (x == 0)
- seen_null = 1;
- else if (seen_null) {
- DESTROY_ESTACK(stack);
- return ((Sint) -1);
- }
- }
switch (encoding) {
case ERL_FILENAME_LATIN1:
if (x > 255) {
@@ -2546,7 +2515,6 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
BIF_ERROR(BIF_P,BADARG);
}
if (is_binary(BIF_ARG_1)) {
- int seen_null = 0;
byte *temp_alloc = NULL;
byte *bytes;
byte *err_pos;
@@ -2556,18 +2524,10 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
size = binary_size(BIF_ARG_1);
bytes = erts_get_aligned_binary_bytes(BIF_ARG_1, &temp_alloc);
if (encoding != ERL_FILENAME_WIN_WCHAR) {
- Uint i;
/*Add 0 termination only*/
bin_term = new_binary(BIF_P, NULL, size+1);
bin_p = binary_bytes(bin_term);
- for (i = 0; i < size; i++) {
- /* Don't allow null in the middle of filenames... */
- if (bytes[i] == 0)
- seen_null = 1;
- else if (seen_null)
- goto bin_name_error;
- bin_p[i] = bytes[i];
- }
+ memcpy(bin_p,bytes,size);
bin_p[size]=0;
erts_free_aligned_binary_bytes(temp_alloc);
BIF_RET(bin_term);
@@ -2581,11 +2541,6 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
bin_term = new_binary(BIF_P, 0, (size+1)*2);
bin_p = binary_bytes(bin_term);
while (size--) {
- /* Don't allow null in the middle of filenames... */
- if (*bytes == 0)
- seen_null = 1;
- else if (seen_null)
- goto bin_name_error;
*bin_p++ = *bytes++;
*bin_p++ = 0;
}
@@ -2603,14 +2558,11 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
bin_p[num_chars*2+1] = 0;
erts_free_aligned_binary_bytes(temp_alloc);
BIF_RET(bin_term);
- bin_name_error:
- erts_free_aligned_binary_bytes(temp_alloc);
- BIF_ERROR(BIF_P,BADARG);
} /* binary */
- if ((need = erts_native_filename_need(BIF_ARG_1, encoding, 0)) < 0) {
- BIF_ERROR(BIF_P,BADARG);
+ if ((need = erts_native_filename_need(BIF_ARG_1,encoding)) < 0) {
+ BIF_ERROR(BIF_P,BADARG);
}
if (encoding == ERL_FILENAME_WIN_WCHAR) {
need += 2;
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index ddf7f03265..182d3aa44e 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -1253,7 +1253,7 @@ void erts_init_unicode(void);
Sint erts_unicode_set_loop_limit(Sint limit);
void erts_native_filename_put(Eterm ioterm, int encoding, byte *p) ;
-Sint erts_native_filename_need(Eterm ioterm, int encoding, int allow_null);
+Sint erts_native_filename_need(Eterm ioterm, int encoding);
void erts_copy_utf8_to_utf16_little(byte *target, byte *bytes, int num_chars);
int erts_analyze_utf8(byte *source, Uint size,
byte **err_pos, Uint *num_chars, int *left);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 08:57:10 +0000