diff options
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/emulator/beam/erl_bif_trace.c | 24 | ||||
| -rw-r--r-- | erts/emulator/beam/erl_process.h | 5 |
2 files changed, 20 insertions, 9 deletions
diff --git a/erts/emulator/beam/erl_bif_trace.c b/erts/emulator/beam/erl_bif_trace.c index 9861483bf0..97e869f5a3 100644 --- a/erts/emulator/beam/erl_bif_trace.c +++ b/erts/emulator/beam/erl_bif_trace.c @@ -74,7 +74,7 @@ static void smp_bp_finisher(void* arg); static BIF_RETTYPE system_monitor(Process *p, Eterm monitor_pid, Eterm list); -static void new_seq_trace_token(Process* p); /* help func for seq_trace_2*/ +static void new_seq_trace_token(Process* p, int); /* help func for seq_trace_2*/ static Eterm trace_info_pid(Process* p, Eterm pid_spec, Eterm key); static Eterm trace_info_func(Process* p, Eterm pid_spec, Eterm key); static Eterm trace_info_on_load(Process* p, Eterm key); @@ -1874,7 +1874,7 @@ Eterm erts_seq_trace(Process *p, Eterm arg1, Eterm arg2, if (current_flag && ( (arg2 == am_true) || (arg2 == am_false)) ) { /* Flags */ - new_seq_trace_token(p); + new_seq_trace_token(p, 0); flags = unsigned_val(SEQ_TRACE_TOKEN_FLAGS(p)); if (build_result) { old_value = flags & current_flag ? am_true : am_false; @@ -1889,11 +1889,11 @@ Eterm erts_seq_trace(Process *p, Eterm arg1, Eterm arg2, return old_value; } else if (arg1 == am_label) { - new_seq_trace_token(p); + new_seq_trace_token(p, is_not_immed(arg2)); if (build_result) { old_value = SEQ_TRACE_TOKEN_LABEL(p); } - SEQ_TRACE_TOKEN_LABEL(p) = arg2; + SEQ_TRACE_TOKEN_LABEL(p) = arg2; return old_value; } else if (arg1 == am_serial) { @@ -1905,7 +1905,7 @@ Eterm erts_seq_trace(Process *p, Eterm arg1, Eterm arg2, if ((*tp != make_arityval(2)) || is_not_small(*(tp+1)) || is_not_small(*(tp+2))) { return THE_NON_VALUE; } - new_seq_trace_token(p); + new_seq_trace_token(p, 0); if (build_result) { hp = HAlloc(p,3); old_value = TUPLE2(hp, SEQ_TRACE_TOKEN_LASTCNT(p), @@ -1940,8 +1940,8 @@ Eterm erts_seq_trace(Process *p, Eterm arg1, Eterm arg2, } } -void -new_seq_trace_token(Process* p) +static void +new_seq_trace_token(Process* p, int ensure_new_heap) { Eterm* hp; @@ -1953,6 +1953,16 @@ new_seq_trace_token(Process* p) p->common.id, /* Internal pid */ /* From */ make_small(p->seq_trace_lastcnt)); } + else if (ensure_new_heap) { + Eterm* tpl = tuple_val(SEQ_TRACE_TOKEN(p)); + ASSERT(arityval(tpl[0]) == 5); + if (ErtsInArea(tpl, OLD_HEAP(p), + (OLD_HEND(p) - OLD_HEAP(p))*sizeof(Eterm))) { + hp = HAlloc(p, 6); + sys_memcpy(hp, tpl, 6*sizeof(Eterm)); + SEQ_TRACE_TOKEN(p) = make_tuple(hp); + } + } } BIF_RETTYPE erl_seq_trace_info(Process *p, Eterm item) diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h index a60e117bab..212774e421 100644 --- a/erts/emulator/beam/erl_process.h +++ b/erts/emulator/beam/erl_process.h @@ -1226,9 +1226,10 @@ void erts_check_for_holes(Process* p); /* The sequential tracing token is a tuple of size 5: * - * {Flags, Label, Serial, Sender} + * {Flags, Label, Serial, Sender, LastCnt} + * + * WARNING: The top 5-tuple is *MUTABLE* and thus INTERNAL ONLY. */ - #define SEQ_TRACE_TOKEN_ARITY(p) (arityval(*(tuple_val(SEQ_TRACE_TOKEN(p))))) #define SEQ_TRACE_TOKEN_FLAGS(p) (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 1)) #define SEQ_TRACE_TOKEN_LABEL(p) (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 2)) |