[PATCH 03/13] tools lib traceevent: Get rid of die() from pevent_register_event_handler

From: Arnaldo Carvalho de Melo
Date: Fri Sep 07 2012 - 22:08:39 EST


From: Namhyung Kim <namhyung.kim@xxxxxxx>

If memory allocation for handler fails, return gracefully instead of
calling die(). Note that casts to void * are needed because gcc
complained about discarding 'const' qualifier during implicit argument
cast.

Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1346986187-5170-2-git-send-email-namhyung@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/lib/traceevent/event-parse.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 6d5e759..17fd01d 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -5183,7 +5183,12 @@ int pevent_register_event_handler(struct pevent *pevent,

not_found:
/* Save for later use. */
- handle = malloc_or_die(sizeof(*handle));
+ handle = malloc(sizeof(*handle));
+ if (!handle) {
+ do_warning("Failed to allocate event handler");
+ return PEVENT_ERRNO__MEM_ALLOC_FAILED;
+ }
+
memset(handle, 0, sizeof(*handle));
handle->id = id;
if (event_name)
@@ -5193,7 +5198,11 @@ int pevent_register_event_handler(struct pevent *pevent,

if ((event_name && !handle->event_name) ||
(sys_name && !handle->sys_name)) {
- die("Failed to allocate event/sys name");
+ do_warning("Failed to allocate event/sys name");
+ free((void *)handle->event_name);
+ free((void *)handle->sys_name);
+ free(handle);
+ return PEVENT_ERRNO__MEM_ALLOC_FAILED;
}

handle->func = func;
--
1.7.9.2.358.g22243

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