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authorMichal Ptaszek <michal@ptaszek.net>2014-03-12 16:22:08 +0100
committerMichal Ptaszek <michal@ptaszek.net>2014-03-12 16:22:08 +0100
commiteffb1c0a593e71664dec5b06da72518e74254c1b (patch)
treeeb655e969705d9b28a9d4f46094be12630f7aed9 /erts/emulator/beam/erl_async.c
parent8acc644e162bad52f7ab81c76c0cad15628e4f3d (diff)
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Pass full strings to DTrace probes
Whenever string is passed as an argument to a DTrace probe, its length should be properly computed. Until now in order to get length of the input buffer size_of(char *) was used - which evalutes to 4 or 8 (depending on the architecture). To get a proper length, size_of(DTRACE_CHARBUF_NAME(buffer_name)) should be used.
Diffstat (limited to 'erts/emulator/beam/erl_async.c')
-rw-r--r--erts/emulator/beam/erl_async.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/erts/emulator/beam/erl_async.c b/erts/emulator/beam/erl_async.c
index e6d72f569b..aaeab0d56c 100644
--- a/erts/emulator/beam/erl_async.c
+++ b/erts/emulator/beam/erl_async.c
@@ -279,7 +279,8 @@ static ERTS_INLINE void async_add(ErtsAsync *a, ErtsAsyncQ* q)
if (DTRACE_ENABLED(aio_pool_add)) {
DTRACE_CHARBUF(port_str, 16);
- erts_snprintf(port_str, sizeof(port_str), "%T", a->port);
+ erts_snprintf(port_str, sizeof(DTRACE_CHARBUF_NAME(port_str)),
+ "%T", a->port);
/* DTRACE TODO: Get the queue length from erts_thr_q_enqueue() ? */
len = -1;
DTRACE2(aio_pool_add, port_str, len);
@@ -314,7 +315,8 @@ static ERTS_INLINE ErtsAsync *async_get(ErtsThrQ_t *q,
if (DTRACE_ENABLED(aio_pool_get)) {
DTRACE_CHARBUF(port_str, 16);
- erts_snprintf(port_str, sizeof(port_str), "%T", a->port);
+ erts_snprintf(port_str, sizeof(DTRACE_CHARBUF_NAME(port_str)),
+ "%T", a->port);
/* DTRACE TODO: Get the length from erts_thr_q_dequeue() ? */
len = -1;
DTRACE2(aio_pool_get, port_str, len);