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authorRickard Green <[email protected]>2016-05-11 17:16:27 +0200
committerRickard Green <[email protected]>2016-05-11 17:16:27 +0200
commit18fbb49321d716d4590d24512696b665e857d623 (patch)
tree24d0c78cec3abc0c7466ecbba5385d19ee750b53
parent8b544b523d915d1a54d505ec34182676f183a5e0 (diff)
parent3471d44a6a5ed5ab038c4cdc76b350119fe745e2 (diff)
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Merge branch 'lukas/trace-fix'
* lukas/trace-fix: erts: Only allow remove from trace_status callback
-rw-r--r--erts/doc/src/erl_tracer.xml20
-rw-r--r--erts/emulator/beam/beam_bp.c6
-rw-r--r--erts/emulator/beam/erl_bif_trace.c19
-rw-r--r--erts/emulator/beam/erl_db_util.c3
-rw-r--r--erts/emulator/beam/erl_process.c11
-rw-r--r--erts/emulator/beam/erl_trace.c100
-rw-r--r--erts/emulator/beam/erl_trace.h11
-rw-r--r--erts/emulator/beam/io.c2
-rw-r--r--erts/emulator/nifs/common/erl_tracer_nif.c10
-rw-r--r--erts/emulator/test/trace_bif_SUITE.erl1
-rw-r--r--erts/emulator/test/tracer_SUITE.erl90
-rw-r--r--erts/emulator/test/tracer_SUITE_data/tracer_test.c12
-rw-r--r--erts/preloaded/src/erl_tracer.erl8
13 files changed, 153 insertions, 140 deletions
diff --git a/erts/doc/src/erl_tracer.xml b/erts/doc/src/erl_tracer.xml
index 2075b962d8..7fd5512b33 100644
--- a/erts/doc/src/erl_tracer.xml
+++ b/erts/doc/src/erl_tracer.xml
@@ -90,7 +90,7 @@
<item>If not set to <c>true</c>, the tracer has been requested to
include the output of a match specification that was run.</item>
<tag><c>scheduler_id</c></tag>
- <item>Set to a number of the scheduler id is to be included by the tracer.
+ <item>Set to a number if the scheduler id is to be included by the tracer.
Otherwise it is set to <c>undefined</c>.</item>
</taglist>
</p>
@@ -155,14 +155,13 @@
overhead associated with tracing. If <c>trace</c> is returned the
necessary trace data will be created and the trace call-back of the tracer
will be called. If <c>discard</c> is returned, this trace call
- will be discarded and no call to trace will be done. If
- <c>remove</c> is returned, the VM will attempt to remove this tracer
- from the tracee, together with any trace flags set on the tracee.
+ will be discarded and no call to trace will be done.
</p>
<p><c>trace_status</c> is a special type of <c>TraceTag</c> which is used
to check if the tracer should still be active. It is called in multiple
scenarios, but most significantly it is used when tracing is started
- using this tracer.</p>
+ using this tracer. If <c>remove</c> is returned when the <c>trace_status</c>
+ is checked, the tracer will be removed from the tracee.</p>
<p>This function may be called multiple times per tracepoint, so it
is important that it is both fast and side effect free.</p>
</desc>
@@ -617,7 +616,7 @@ static int upgrade(ErlNifEnv* env, void** priv_data, void** old_priv_data,
}
/*
- * argv[0]: Trace Tag
+ * argv[0]: TraceTag
* argv[1]: TracerState
* argv[2]: Tracee
*/
@@ -626,8 +625,11 @@ static ERL_NIF_TERM enabled(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
ErlNifPid to_pid;
if (enif_get_local_pid(env, argv[1], &amp;to_pid))
if (!enif_is_process_alive(env, &amp;to_pid))
- /* tracer is dead so we should remove this tracepoint */
- return enif_make_atom(env, "remove");
+ if (enif_is_identical(enif_make_atom(env, "trace_status"), argv[0]))
+ /* tracer is dead so we should remove this tracepoint */
+ return enif_make_atom(env, "remove");
+ else
+ return enif_make_atom(env, "discard");
/* Only generate trace for when tracer != tracee */
if (enif_is_identical(argv[1], argv[2]))
@@ -645,7 +647,7 @@ static ERL_NIF_TERM enabled(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
}
/*
- * argv[0]: Trace Tag, should only be 'send'
+ * argv[0]: TraceTag, should only be 'send'
* argv[1]: TracerState, process to send {argv[2], argv[4]} to
* argv[2]: Tracee
* argv[3]: Message, ignored
diff --git a/erts/emulator/beam/beam_bp.c b/erts/emulator/beam/beam_bp.c
index 308e5ce205..8489897d3a 100644
--- a/erts/emulator/beam/beam_bp.c
+++ b/erts/emulator/beam/beam_bp.c
@@ -655,8 +655,7 @@ erts_generic_breakpoint(Process* c_p, BeamInstr* I, Eterm* reg)
erts_smp_atomic_inc_nob(&bp->count->acount);
}
- if (bp_flags & ERTS_BPF_TIME_TRACE_ACTIVE
- && ERTS_TRACER_PROC_IS_ENABLED(c_p)) {
+ if (bp_flags & ERTS_BPF_TIME_TRACE_ACTIVE) {
Eterm w;
erts_trace_time_call(c_p, I, bp->time);
w = (BeamInstr) *c_p->cp;
@@ -753,8 +752,7 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I)
}
}
if (bp_flags & ERTS_BPF_TIME_TRACE_ACTIVE &&
- IS_TRACED_FL(p, F_TRACE_CALLS) &&
- ERTS_TRACER_PROC_IS_ENABLED(p)) {
+ IS_TRACED_FL(p, F_TRACE_CALLS)) {
BeamInstr *pc = (BeamInstr *)ep->code+3;
erts_trace_time_call(p, pc, bp->time);
}
diff --git a/erts/emulator/beam/erl_bif_trace.c b/erts/emulator/beam/erl_bif_trace.c
index b65c0e303f..66e5146da0 100644
--- a/erts/emulator/beam/erl_bif_trace.c
+++ b/erts/emulator/beam/erl_bif_trace.c
@@ -512,8 +512,7 @@ start_trace(Process *c_p, ErtsTracer tracer,
&& !ERTS_TRACER_COMPARE(ERTS_TRACER(port), tracer)) {
/* This tracee is already being traced, and not by the
* tracer to be */
- if (erts_is_tracer_proc_enabled(c_p, ERTS_PROC_LOCKS_ALL,
- common, am_trace_status)) {
+ if (erts_is_tracer_enabled(tracer, common)) {
/* The tracer is still in use */
return 1;
}
@@ -856,7 +855,7 @@ trace_info_pid(Process* p, Eterm pid_spec, Eterm key)
return am_undefined;
if (!ERTS_TRACER_IS_NIL(ERTS_TRACER(tracee)))
- erts_is_tracer_proc_enabled(NULL, 0, &tracee->common, am_trace_status);
+ erts_is_tracer_proc_enabled(NULL, 0, &tracee->common);
tracer = erts_tracer_to_term(p, ERTS_TRACER(tracee));
trace_flags = ERTS_TRACE_FLAGS(tracee);
@@ -864,22 +863,24 @@ trace_info_pid(Process* p, Eterm pid_spec, Eterm key)
erts_port_release(tracee);
} else if (is_internal_pid(pid_spec)) {
- Process *tracee;
- tracee = erts_pid2proc(p, ERTS_PROC_LOCK_MAIN,
- pid_spec, ERTS_PROC_LOCK_MAIN);
+ Process *tracee = erts_pid2proc_not_running(p, ERTS_PROC_LOCK_MAIN,
+ pid_spec, ERTS_PROC_LOCK_MAIN);
+
+ if (tracee == ERTS_PROC_LOCK_BUSY)
+ ERTS_BIF_YIELD2(bif_export[BIF_trace_info_2], p, pid_spec, key);
if (!tracee)
return am_undefined;
if (!ERTS_TRACER_IS_NIL(ERTS_TRACER(tracee)))
erts_is_tracer_proc_enabled(tracee, ERTS_PROC_LOCK_MAIN,
- &tracee->common, am_trace_status);
+ &tracee->common);
tracer = erts_tracer_to_term(p, ERTS_TRACER(tracee));
trace_flags = ERTS_TRACE_FLAGS(tracee);
- if (tracee != p)
- erts_smp_proc_unlock(tracee, ERTS_PROC_LOCK_MAIN);
+ if (tracee != p)
+ erts_smp_proc_unlock(tracee, ERTS_PROC_LOCK_MAIN);
} else if (is_external_pid(pid_spec)
&& external_pid_dist_entry(pid_spec) == erts_this_dist_entry) {
return am_undefined;
diff --git a/erts/emulator/beam/erl_db_util.c b/erts/emulator/beam/erl_db_util.c
index 3e75b9fd5f..6732b708a8 100644
--- a/erts/emulator/beam/erl_db_util.c
+++ b/erts/emulator/beam/erl_db_util.c
@@ -174,7 +174,8 @@ set_match_trace(Process *tracee_p, Eterm fail_term, ErtsTracer tracer,
ERTS_PROC_LOCKS_ALL == erts_proc_lc_my_proc_locks(tracee_p)
|| erts_thr_progress_is_blocking());
- if (ERTS_TRACER_IS_NIL(tracer) || erts_is_tracer_enabled(tracee_p, tracer))
+ if (ERTS_TRACER_IS_NIL(tracer)
+ || erts_is_tracer_enabled(tracer, &tracee_p->common))
return set_tracee_flags(tracee_p, tracer, d_flags, e_flags);
return fail_term;
}
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index e632e3d5b5..a853ec585b 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -10085,7 +10085,10 @@ Process *schedule(Process *p, int calls)
erts_smp_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
- if (IS_TRACED(p)) {
+ /* Clear tracer if it has been removed */
+ if (IS_TRACED(p) && erts_is_tracer_proc_enabled(
+ p, ERTS_PROC_LOCK_MAIN, &p->common)) {
+
if (state & ERTS_PSFLG_EXITING) {
if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_EXIT))
trace_sched(p, ERTS_PROC_LOCK_MAIN, am_in_exiting);
@@ -10100,12 +10103,6 @@ Process *schedule(Process *p, int calls)
}
}
-
-#ifdef ERTS_SMP
- /* Clears tracer if it has been removed */
- (void)ERTS_TRACER_PROC_IS_ENABLED(p);
-#endif
-
if (state & (ERTS_PSFLG_RUNNING_SYS
| ERTS_PSFLG_DIRTY_RUNNING_SYS)) {
/*
diff --git a/erts/emulator/beam/erl_trace.c b/erts/emulator/beam/erl_trace.c
index 6d6373b706..ca001fc156 100644
--- a/erts/emulator/beam/erl_trace.c
+++ b/erts/emulator/beam/erl_trace.c
@@ -396,7 +396,7 @@ send_to_tracer_nif(Process *c_p, ErtsPTabElementCommon *t_p,
Eterm tag, Eterm msg, Eterm extra,
Eterm pam_result);
static ERTS_INLINE Eterm
-call_enabled_tracer(Process *c_p, const ErtsTracer tracer,
+call_enabled_tracer(const ErtsTracer tracer,
ErtsTracerNif **tnif_ref,
enum ErtsTracerOpt topt,
Eterm tag, Eterm t_p_id);
@@ -459,8 +459,7 @@ erts_set_system_seq_tracer(Process *c_p, ErtsProcLocks c_p_locks, ErtsTracer new
if (!ERTS_TRACER_IS_NIL(new)) {
Eterm nif_result = call_enabled_tracer(
- NULL, new, NULL,
- TRACE_FUN_ENABLED, am_trace_status, am_undefined);
+ new, NULL, TRACE_FUN_ENABLED, am_trace_status, am_undefined);
switch (nif_result) {
case am_trace: break;
default:
@@ -492,7 +491,7 @@ erts_get_system_seq_tracer(void)
erts_smp_rwmtx_runlock(&sys_trace_rwmtx);
if (st != erts_tracer_nil &&
- call_enabled_tracer(NULL, st, NULL, TRACE_FUN_ENABLED,
+ call_enabled_tracer(st, NULL, TRACE_FUN_ENABLED,
am_trace_status, am_undefined) == am_remove) {
erts_set_system_seq_tracer(NULL, 0, erts_tracer_nil);
st = erts_tracer_nil;
@@ -513,7 +512,7 @@ get_default_tracing(Uint *flagsp, ErtsTracer *tracerp,
*default_trace_flags &= ~TRACEE_FLAGS;
} else {
Eterm nif_res;
- nif_res = call_enabled_tracer(NULL, *default_tracer,
+ nif_res = call_enabled_tracer(*default_tracer,
NULL, TRACE_FUN_ENABLED,
am_trace_status, am_undefined);
switch (nif_res) {
@@ -915,8 +914,8 @@ seq_trace_update_send(Process *p)
ASSERT((is_tuple(SEQ_TRACE_TOKEN(p)) || is_nil(SEQ_TRACE_TOKEN(p))));
if (have_no_seqtrace(SEQ_TRACE_TOKEN(p)) ||
(seq_tracer != NIL &&
- call_enabled_tracer(NULL, seq_tracer, NULL,
- TRACE_FUN_ENABLED, am_trace_status,
+ call_enabled_tracer(seq_tracer, NULL,
+ TRACE_FUN_ENABLED, am_seq_trace,
p ? p->common.id : am_undefined) != am_trace)
#ifdef USE_VM_PROBES
|| (SEQ_TRACE_TOKEN(p) == am_have_dt_utag)
@@ -963,9 +962,9 @@ seq_trace_output_generic(Eterm token, Eterm msg, Uint type,
ASSERT(is_tuple(token) || is_nil(token));
if (token == NIL || (process && ERTS_TRACE_FLAGS(process) & F_SENSITIVE) ||
ERTS_TRACER_IS_NIL(seq_tracer) ||
- call_enabled_tracer(NULL, seq_tracer,
+ call_enabled_tracer(seq_tracer,
NULL, TRACE_FUN_ENABLED,
- am_trace_status,
+ am_seq_trace,
process ? process->common.id : am_undefined) != am_trace) {
return;
}
@@ -1186,7 +1185,11 @@ erts_call_trace(Process* p, BeamInstr mfa[3], Binary *match_spec,
* use process flags
*/
tracee_flags = &ERTS_TRACE_FLAGS(p);
+ /* Is is not ideal at all to call this check twice,
+ it should be optimized so that only one call is made. */
if (!is_tracer_enabled(p, ERTS_PROC_LOCK_MAIN, &p->common, &tnif,
+ TRACE_FUN_ENABLED, am_trace_status)
+ || !is_tracer_enabled(p, ERTS_PROC_LOCK_MAIN, &p->common, &tnif,
TRACE_FUN_E_CALL, am_call)) {
return 0;
}
@@ -1202,13 +1205,21 @@ erts_call_trace(Process* p, BeamInstr mfa[3], Binary *match_spec,
}
meta_flags = F_TRACE_CALLS | F_NOW_TS;
tracee_flags = &meta_flags;
- switch (call_enabled_tracer(p, *tracer,
- &tnif, TRACE_FUN_T_CALL,
- am_call, p->common.id)) {
+ switch (call_enabled_tracer(*tracer,
+ &tnif, TRACE_FUN_ENABLED,
+ am_trace_status, p->common.id)) {
default:
case am_remove: *tracer = erts_tracer_nil;
case am_discard: return 0;
- case am_trace: break;
+ case am_trace:
+ switch (call_enabled_tracer(*tracer,
+ &tnif, TRACE_FUN_T_CALL,
+ am_call, p->common.id)) {
+ default:
+ case am_discard: return 0;
+ case am_trace: break;
+ }
+ break;
}
}
@@ -1346,9 +1357,9 @@ trace_proc(Process *c_p, ErtsProcLocks c_p_locks,
Process *t_p, Eterm what, Eterm data)
{
ErtsTracerNif *tnif = NULL;
- if (is_tracer_enabled(c_p, c_p_locks, &t_p->common, &tnif,
+ if (is_tracer_enabled(NULL, 0, &t_p->common, &tnif,
TRACE_FUN_E_PROCS, what))
- send_to_tracer_nif(c_p, &t_p->common, t_p->common.id, tnif, TRACE_FUN_T_PROCS,
+ send_to_tracer_nif(NULL, &t_p->common, t_p->common.id, tnif, TRACE_FUN_T_PROCS,
what, data, THE_NON_VALUE, am_true);
}
@@ -1365,16 +1376,15 @@ trace_proc_spawn(Process *p, Eterm what, Eterm pid,
Eterm mod, Eterm func, Eterm args)
{
ErtsTracerNif *tnif = NULL;
- if (is_tracer_enabled(p, ERTS_PROC_LOCKS_ALL &
- ~(ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE),
- &p->common, &tnif, TRACE_FUN_E_PROCS, what)) {
+ if (is_tracer_enabled(NULL, 0,
+ &p->common, &tnif, TRACE_FUN_E_PROCS, what)) {
Eterm mfa;
Eterm* hp;
hp = HAlloc(p, 4);
mfa = TUPLE3(hp, mod, func, args);
hp += 4;
- send_to_tracer_nif(p, &p->common, p->common.id, tnif, TRACE_FUN_T_PROCS,
+ send_to_tracer_nif(NULL, &p->common, p->common.id, tnif, TRACE_FUN_T_PROCS,
what, pid, mfa, am_true);
}
}
@@ -2899,23 +2909,28 @@ send_to_tracer_nif(Process *c_p, ErtsPTabElementCommon *t_p,
}
static ERTS_INLINE Eterm
-call_enabled_tracer(Process *c_p, const ErtsTracer tracer,
+call_enabled_tracer(const ErtsTracer tracer,
ErtsTracerNif **tnif_ret,
enum ErtsTracerOpt topt,
Eterm tag, Eterm t_p_id) {
ErtsTracerNif *tnif = lookup_tracer_nif(tracer);
if (tnif) {
- Eterm argv[] = {tag, ERTS_TRACER_STATE(tracer), t_p_id};
+ Eterm argv[] = {tag, ERTS_TRACER_STATE(tracer), t_p_id},
+ ret;
topt = (tnif->tracers[topt].cb) ? topt : TRACE_FUN_ENABLED;
ASSERT(topt < NIF_TRACER_TYPES);
ASSERT(tnif->tracers[topt].cb != NULL);
if (tnif_ret) *tnif_ret = tnif;
- return erts_nif_call_function(c_p, NULL, tnif->nif_mod,
- tnif->tracers[topt].cb,
- tnif->tracers[topt].arity,
- argv);
+ ret = erts_nif_call_function(NULL, NULL, tnif->nif_mod,
+ tnif->tracers[topt].cb,
+ tnif->tracers[topt].arity,
+ argv);
+ if (tag == am_trace_status && ret != am_remove)
+ return am_trace;
+ ASSERT(tag == am_trace_status || ret != am_remove);
+ return ret;
}
- return am_remove;
+ return tag == am_trace_status ? am_remove : am_discard;
}
static int
@@ -2940,12 +2955,12 @@ is_tracer_enabled(Process* c_p, ErtsProcLocks c_p_locks,
}
#endif
- nif_result = call_enabled_tracer(c_p, t_p->tracer, tnif_ret, topt, tag, t_p->id);
+ nif_result = call_enabled_tracer(t_p->tracer, tnif_ret, topt, tag, t_p->id);
switch (nif_result) {
case am_discard: return 0;
case am_trace: return 1;
case THE_NON_VALUE:
- case am_remove: break;
+ case am_remove: ASSERT(tag == am_trace_status); break;
default:
/* only am_remove should be returned, but if
something else is returned we fall-through
@@ -2976,19 +2991,14 @@ is_tracer_enabled(Process* c_p, ErtsProcLocks c_p_locks,
return 0;
}
-int erts_is_tracer_proc_enabled(Process* c_p, ErtsProcLocks c_p_locks,
- ErtsPTabElementCommon *t_p, Eterm type)
-{
- return is_tracer_enabled(c_p, c_p_locks, t_p, NULL, TRACE_FUN_ENABLED, am_trace_status);
-}
-
-int erts_is_tracer_enabled(Process *c_p, const ErtsTracer tracer)
+int erts_is_tracer_enabled(const ErtsTracer tracer, ErtsPTabElementCommon *t_p)
{
ErtsTracerNif *tnif = lookup_tracer_nif(tracer);
if (tnif) {
- Eterm nif_result = call_enabled_tracer(c_p, tracer, &tnif,
- TRACE_FUN_ENABLED, am_trace_status,
- c_p->common.id);
+ Eterm nif_result = call_enabled_tracer(tracer, &tnif,
+ TRACE_FUN_ENABLED,
+ am_trace_status,
+ t_p->id);
switch (nif_result) {
case am_discard:
case am_trace: return 1;
@@ -2999,6 +3009,20 @@ int erts_is_tracer_enabled(Process *c_p, const ErtsTracer tracer)
return 0;
}
+int erts_is_tracer_proc_enabled(Process* c_p, ErtsProcLocks c_p_locks,
+ ErtsPTabElementCommon *t_p)
+{
+ return is_tracer_enabled(c_p, c_p_locks, t_p, NULL, TRACE_FUN_ENABLED,
+ am_trace_status);
+}
+
+int erts_is_tracer_proc_enabled_send(Process* c_p, ErtsProcLocks c_p_locks,
+ ErtsPTabElementCommon *t_p)
+{
+ return is_tracer_enabled(c_p, c_p_locks, t_p, NULL, TRACE_FUN_T_SEND, am_send);
+}
+
+
void erts_tracer_replace(ErtsPTabElementCommon *t_p, const ErtsTracer tracer)
{
#if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_CHECK)
diff --git a/erts/emulator/beam/erl_trace.h b/erts/emulator/beam/erl_trace.h
index fd5879bc9d..0095d4386b 100644
--- a/erts/emulator/beam/erl_trace.h
+++ b/erts/emulator/beam/erl_trace.h
@@ -193,8 +193,10 @@ int erts_finish_breakpointing(void);
/* Nif tracer functions */
int erts_is_tracer_proc_enabled(Process *c_p, ErtsProcLocks c_p_locks,
- ErtsPTabElementCommon *t_p, Eterm type);
-int erts_is_tracer_enabled(Process *c_p, const ErtsTracer tracer);
+ ErtsPTabElementCommon *t_p);
+int erts_is_tracer_proc_enabled_send(Process* c_p, ErtsProcLocks c_p_locks,
+ ErtsPTabElementCommon *t_p);
+int erts_is_tracer_enabled(const ErtsTracer tracer, ErtsPTabElementCommon *t_p);
Eterm erts_tracer_to_term(Process *p, ErtsTracer tracer);
ErtsTracer erts_term_to_tracer(Eterm prefix, Eterm term);
void erts_tracer_replace(ErtsPTabElementCommon *t_p,
@@ -224,9 +226,4 @@ ERTS_DECLARE_DUMMY(erts_tracer_nil) = NIL;
#define ERTS_TRACER_FROM_ETERM(termp) \
((ErtsTracer*)(termp))
-#define ERTS_TRACER_PROC_IS_ENABLED(PROC) \
- (!ERTS_TRACER_IS_NIL(ERTS_TRACER(PROC)) \
- && erts_is_tracer_proc_enabled(PROC, ERTS_PROC_LOCK_MAIN, \
- &(PROC)->common, am_trace_status))
-
#endif /* ERL_TRACE_H__ */
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index ef326fafec..0377f6cb5e 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -5941,7 +5941,7 @@ driver_deliver_term(Port *prt, Eterm to, ErlDrvTermData* data, int len)
if (!rp) {
if (!prt || !IS_TRACED_FL(prt, F_TRACE_SEND))
goto done;
- if (!erts_is_tracer_proc_enabled(NULL, 0, &prt->common, am_send))
+ if (!erts_is_tracer_proc_enabled_send(NULL, 0, &prt->common))
goto done;
res = -2;
diff --git a/erts/emulator/nifs/common/erl_tracer_nif.c b/erts/emulator/nifs/common/erl_tracer_nif.c
index 8a9a1bf16c..6dddc80607 100644
--- a/erts/emulator/nifs/common/erl_tracer_nif.c
+++ b/erts/emulator/nifs/common/erl_tracer_nif.c
@@ -70,6 +70,7 @@ ERL_NIF_INIT(erl_tracer, nif_funcs, load, NULL, upgrade, unload)
ATOM_DECL(strict_monotonic); \
ATOM_DECL(timestamp); \
ATOM_DECL(trace); \
+ ATOM_DECL(trace_status); \
ATOM_DECL(trace_ts); \
ATOM_DECL(true); \
ATOM_DECL(gc_minor_start); \
@@ -118,19 +119,22 @@ static ERL_NIF_TERM enabled(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
ErlNifPid to_pid;
ErlNifPort to_port;
+ ERL_NIF_TERM ret = enif_is_identical(argv[0], atom_trace_status) ?
+ atom_remove : atom_discard;
+
ASSERT(argc == 3);
if (enif_get_local_pid(env, argv[1], &to_pid)) {
if (!enif_is_process_alive(env, &to_pid))
/* tracer is dead so we should remove this trace point */
- return atom_remove;
+ return ret;
} else if (enif_get_local_port(env, argv[1], &to_port)) {
if (!enif_is_port_alive(env, &to_port))
/* tracer is dead so we should remove this trace point */
- return atom_remove;
+ return ret;
} else {
/* The state was not a pid or a port */
- return atom_remove;
+ return ret;
}
/* Only generate trace for when tracer != tracee */
diff --git a/erts/emulator/test/trace_bif_SUITE.erl b/erts/emulator/test/trace_bif_SUITE.erl
index 8c3ffccc45..491b37ae46 100644
--- a/erts/emulator/test/trace_bif_SUITE.erl
+++ b/erts/emulator/test/trace_bif_SUITE.erl
@@ -232,6 +232,7 @@ do_trace_bif_return(TsType, TsFlags) ->
{?MODULE, bif_process,0}},
Ts11, TsType),
check_ts(TsType, Ts12, make_ts(TsType)),
+ erlang:trace_pattern({erlang,'_','_'}, false, [local]),
ok.
diff --git a/erts/emulator/test/tracer_SUITE.erl b/erts/emulator/test/tracer_SUITE.erl
index de44d6656a..20fb7e475e 100644
--- a/erts/emulator/test/tracer_SUITE.erl
+++ b/erts/emulator/test/tracer_SUITE.erl
@@ -44,6 +44,8 @@ groups() ->
gc_start, gc_end]}].
init_per_suite(Config) ->
+ erlang:trace_pattern({'_','_','_'}, false, [local]),
+ erlang:trace_pattern({'_','_','_'}, false, []),
purge(),
Config.
@@ -119,23 +121,24 @@ unload(_Config) ->
end,
1 = erlang:trace(Pid, true, [{tracer, tracer_test,
- {#{ call => trace}, self(), []}},
+ {#{ call => trace }, self(), []}},
call]),
1 = erlang:trace_pattern({?MODULE, all, 0}, [], []),
Tc(1),
- receive _ -> ok after 0 -> ct:fail(timeout) end,
+ receive _M -> ok after 0 -> ct:fail(timeout) end,
+ receive M0 -> ct:fail({unexpected_message0, M0}) after 0 -> ok end,
code:purge(tracer_test),
code:delete(tracer_test),
Tc(1),
- receive M1 -> ct:fail({unexpected_message, M1}) after 0 -> ok end,
+ receive M1 -> ct:fail({unexpected_message1, M1}) after 0 -> ok end,
code:purge(tracer_test),
Tc(1),
- receive M2 -> ct:fail({unexpected_message, M2}) after 0 -> ok end,
+ receive M2 -> ct:fail({unexpected_message2, M2}) after 0 -> ok end,
ok.
@@ -167,13 +170,19 @@ reload(_Config) ->
false = code:purge(tracer_test),
true = code:delete(tracer_test),
- false = code:purge(tracer_test)
+ false = code:purge(tracer_test),
+ timer:sleep(10)
end || _ <- lists:seq(1,15)],
ok.
reload_loop() ->
?MODULE:all(),
+ ?MODULE:all(),
+ ?MODULE:all(),
+ ?MODULE:all(),
+ ?MODULE:all(),
+ timer:sleep(1),
reload_loop().
invalid_tracers(_Config) ->
@@ -214,7 +223,7 @@ send(_Config) ->
Expect = fun(Pid, State, EOpts) ->
receive
Msg ->
- {Pid, send, State, Pid, ok, Self, Opts} = Msg,
+ {send, State, Pid, ok, Self, Opts} = Msg,
check_opts(EOpts, Opts)
end
end,
@@ -230,7 +239,7 @@ recv(_Config) ->
Expect = fun(Pid, State, EOpts) ->
receive
Msg ->
- {undefined, 'receive', State, Pid, ok, undefined, Opts} = Msg,
+ {'receive', State, Pid, ok, undefined, Opts} = Msg,
check_opts(EOpts, Opts)
end
end,
@@ -247,14 +256,14 @@ spawn(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {Pid, spawn, State, Pid, NewPid,
+ {spawn, State, Pid, NewPid,
{lists,seq,[1,10]}, Opts} = Msg,
check_opts(EOpts, Opts),
true = is_pid(NewPid) andalso NewPid /= Pid
end
end,
- test(spawn, procs, Tc, Expect, true).
+ test(spawn, procs, Tc, Expect, false).
exit(_Config) ->
Tc = fun(Pid) ->
@@ -265,7 +274,7 @@ exit(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {Pid, exit, State, Pid, normal, undefined, Opts} = Msg,
+ {exit, State, Pid, normal, undefined, Opts} = Msg,
check_opts(EOpts, Opts)
end
end,
@@ -286,13 +295,13 @@ link(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {Pid, link, State, Pid, NewPid, undefined, Opts} = Msg,
+ {link, State, Pid, NewPid, undefined, Opts} = Msg,
check_opts(EOpts, Opts),
true = is_pid(NewPid) andalso NewPid /= Pid
end
end,
- test(link, procs, Tc, Expect, true).
+ test(link, procs, Tc, Expect, false).
unlink(_Config) ->
@@ -309,13 +318,13 @@ unlink(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {Pid, unlink, State, Pid, NewPid, undefined, Opts} = Msg,
+ {unlink, State, Pid, NewPid, undefined, Opts} = Msg,
check_opts(EOpts, Opts),
true = is_pid(NewPid) andalso NewPid /= Pid
end
end,
- test(unlink, procs, Tc, Expect, true).
+ test(unlink, procs, Tc, Expect, false).
getting_linked(_Config) ->
@@ -331,7 +340,7 @@ getting_linked(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {NewPid, getting_linked, State, Pid, NewPid, undefined, Opts} = Msg,
+ {getting_linked, State, Pid, NewPid, undefined, Opts} = Msg,
check_opts(EOpts, Opts),
true = is_pid(NewPid) andalso NewPid /= Pid
end
@@ -355,7 +364,7 @@ getting_unlinked(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {NewPid, getting_unlinked, State, Pid, NewPid, undefined, Opts} = Msg,
+ {getting_unlinked, State, Pid, NewPid, undefined, Opts} = Msg,
check_opts(EOpts, Opts),
true = is_pid(NewPid) andalso NewPid /= Pid
end
@@ -377,12 +386,12 @@ register(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {Pid, register, State, Pid, ?MODULE, undefined, Opts} = Msg,
+ {register, State, Pid, ?MODULE, undefined, Opts} = Msg,
check_opts(EOpts, Opts)
end
end,
- test(register, procs, Tc, Expect, true).
+ test(register, procs, Tc, Expect, false).
unregister(_Config) ->
@@ -398,18 +407,18 @@ unregister(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {Pid, unregister, State, Pid, ?MODULE, undefined, Opts} = Msg,
+ {unregister, State, Pid, ?MODULE, undefined, Opts} = Msg,
check_opts(EOpts, Opts)
end
end,
- test(unregister, procs, Tc, Expect, true).
+ test(unregister, procs, Tc, Expect, false).
in(_Config) ->
Tc = fun(Pid) ->
Self = self(),
- Pid ! fun() -> receive after 1 -> Self ! ok end end,
+ Pid ! fun() -> receive after 10 -> Self ! ok end end,
receive ok -> ok end
end,
@@ -418,7 +427,7 @@ in(_Config) ->
N = (fun F(N) ->
receive
Msg ->
- {Pid, in, State, Pid, _,
+ {in, State, Pid, _,
undefined, Opts} = Msg,
check_opts(EOpts, Opts),
F(N+1)
@@ -428,7 +437,7 @@ in(_Config) ->
true = N > 0
end,
- test(in, running, Tc, Expect, true).
+ test(in, running, Tc, Expect, false).
out(_Config) ->
Tc = fun(Pid) ->
@@ -443,7 +452,7 @@ out(_Config) ->
N = (fun F(N) ->
receive
Msg ->
- {Pid, out, State, Pid, _,
+ {out, State, Pid, _,
undefined, Opts} = Msg,
check_opts(EOpts, Opts),
F(N+1)
@@ -453,7 +462,7 @@ out(_Config) ->
true = N > 0
end,
- test(out, running, Tc, Expect, true, true).
+ test(out, running, Tc, Expect, false, true).
gc_start(_Config) ->
@@ -468,12 +477,12 @@ gc_start(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {Pid, gc_major_start, State, Pid, _, undefined, Opts} = Msg,
+ {gc_major_start, State, Pid, _, undefined, Opts} = Msg,
check_opts(EOpts, Opts)
end
end,
- test(gc_major_start, garbage_collection, Tc, Expect, true).
+ test(gc_major_start, garbage_collection, Tc, Expect, false).
gc_end(_Config) ->
@@ -488,20 +497,20 @@ gc_end(_Config) ->
fun(Pid, State, EOpts) ->
receive
Msg ->
- {Pid, gc_major_end, State, Pid, _, undefined, Opts} = Msg,
+ {gc_major_end, State, Pid, _, undefined, Opts} = Msg,
check_opts(EOpts, Opts)
end
end,
- test(gc_major_end, garbage_collection, Tc, Expect, true).
+ test(gc_major_end, garbage_collection, Tc, Expect, false).
test(Event, Tc, Expect) ->
- test(Event, Tc, Expect, true).
+ test(Event, Tc, Expect, false).
test(Event, Tc, Expect, Removes) ->
test(Event, Event, Tc, Expect, Removes).
test(Event, TraceFlag, Tc, Expect, Removes) ->
test(Event, TraceFlag, Tc, Expect, Removes, false).
-test(Event, TraceFlag, Tc, Expect, Removes, Dies) ->
+test(Event, TraceFlag, Tc, Expect, _Removes, Dies) ->
ComplexState = {fun() -> ok end, <<0:(128*8)>>},
Opts = #{ timestamp => undefined,
@@ -557,25 +566,6 @@ test(Event, TraceFlag, Tc, Expect, Removes, Dies) ->
ok
end,
- %% Test that remove works
- Pid3 = start_tracee(),
- State3 = {#{ Event => remove }, self(), ComplexState},
- 1 = erlang:trace(Pid3, true, [TraceFlag, {tracer, tracer_test, State3}]),
- Tc(Pid3),
- ok = trace_delivered(Pid3),
- receive M3 -> ct:fail({unexpected, M3}) after 0 -> ok end,
- if not Dies ->
- if Removes ->
- {flags, []} = erlang:trace_info(Pid3, flags),
- {tracer, []} = erlang:trace_info(Pid3, tracer);
- true ->
- {flags, [TraceFlag]} = erlang:trace_info(Pid3, flags),
- {tracer, {tracer_test, State3}} = erlang:trace_info(Pid3, tracer)
- end,
- erlang:trace(Pid3, false, [TraceFlag]);
- true ->
- ok
- end,
ok.
check_opts(#{ scheduler_id := number } = E, #{ scheduler_id := N } = O)
diff --git a/erts/emulator/test/tracer_SUITE_data/tracer_test.c b/erts/emulator/test/tracer_SUITE_data/tracer_test.c
index 8b4be1345d..908f35da9c 100644
--- a/erts/emulator/test/tracer_SUITE_data/tracer_test.c
+++ b/erts/emulator/test/tracer_SUITE_data/tracer_test.c
@@ -104,16 +104,10 @@ static ERL_NIF_TERM trace(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
enif_get_tuple(env, argv[1], &state_arity, &state_tuple);
- tuple = enif_alloc(sizeof(ERL_NIF_TERM)*(argc+1));
- memcpy(tuple+1,argv,sizeof(ERL_NIF_TERM)*argc);
+ tuple = enif_alloc(sizeof(ERL_NIF_TERM)*(argc));
+ memcpy(tuple,argv,sizeof(ERL_NIF_TERM)*argc);
- if (enif_self(env, &self)) {
- tuple[0] = enif_make_pid(env, &self);
- } else {
- tuple[0] = enif_make_atom(env, "undefined");
- }
-
- msg = enif_make_tuple_from_array(env, tuple, argc + 1);
+ msg = enif_make_tuple_from_array(env, tuple, argc);
enif_get_local_pid(env, state_tuple[1], &to);
enif_send(env, &to, NULL, msg);
enif_free(tuple);
diff --git a/erts/preloaded/src/erl_tracer.erl b/erts/preloaded/src/erl_tracer.erl
index de1e9ca01e..fe15812535 100644
--- a/erts/preloaded/src/erl_tracer.erl
+++ b/erts/preloaded/src/erl_tracer.erl
@@ -41,10 +41,14 @@ on_load() ->
%%% NIF placeholders
%%%
--spec enabled(Tag :: trace_tag() | seq_trace | trace_status,
+-spec enabled(Tag :: trace_status,
TracerState :: tracer_state(),
Tracee :: tracee()) ->
- trace | discard | remove.
+ trace | remove;
+ (Tag :: trace_tag() | seq_trace,
+ TracerState :: tracer_state(),
+ Tracee :: tracee()) ->
+ trace | discard.
enabled(_, _, _) ->
erlang:nif_error(nif_not_loaded).