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authorSverker Eriksson <[email protected]>2016-05-04 14:45:05 +0200
committerSverker Eriksson <[email protected]>2016-05-04 19:53:38 +0200
commit54172674e71caf7da7a0b069c9bd92543e4f705d (patch)
tree7897a7dcf376e68ba305b5846201f838fdb89844 /erts/emulator/beam
parent6197aa2498bcb35e331c9112a70635f55047bf26 (diff)
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erts: Add send and 'receive' to trace_info/2
to obtain match specs
Diffstat (limited to 'erts/emulator/beam')
-rw-r--r--erts/emulator/beam/erl_bif_trace.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_bif_trace.c b/erts/emulator/beam/erl_bif_trace.c
index ffc0afda58..b65c0e303f 100644
--- a/erts/emulator/beam/erl_bif_trace.c
+++ b/erts/emulator/beam/erl_bif_trace.c
@@ -81,6 +81,8 @@ static void new_seq_trace_token(Process* p); /* 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);
+static Eterm trace_info_event(Process* p, Eterm event, Eterm key);
+
static void reset_bif_trace(void);
static void setup_bif_trace(void);
@@ -814,6 +816,8 @@ Eterm trace_info_2(BIF_ALIST_2)
if (What == am_on_load) {
res = trace_info_on_load(p, Key);
+ } else if (What == am_send || What == am_receive) {
+ res = trace_info_event(p, What, Key);
} else if (is_atom(What) || is_pid(What) || is_port(What)) {
res = trace_info_pid(p, What, Key);
} else if (is_tuple(What)) {
@@ -1303,6 +1307,42 @@ trace_info_on_load(Process* p, Eterm key)
}
}
+static Eterm
+trace_info_event(Process* p, Eterm event, Eterm key)
+{
+ ErtsTracingEvent* te;
+ Eterm retval;
+ Eterm* hp;
+
+ switch (event) {
+ case am_send: te = erts_send_tracing; break;
+ case am_receive: te = erts_receive_tracing; break;
+ default:
+ goto error;
+ }
+
+ if (key != am_match_spec)
+ goto error;
+
+ te = &te[erts_active_bp_ix()];
+
+ if (te->on) {
+ if (!te->match_spec)
+ retval = am_true;
+ else
+ retval = copy_object(MatchSetGetSource(te->match_spec), p);
+ }
+ else
+ retval = am_false;
+
+ hp = HAlloc(p, 3);
+ return TUPLE2(hp, key, retval);
+
+ error:
+ BIF_ERROR(p, BADARG);
+}
+
+
#undef FUNC_TRACE_NOEXIST
#undef FUNC_TRACE_UNTRACED
#undef FUNC_TRACE_GLOBAL_TRACE