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queue_signalled: handle cancellation while waiting correctly

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This commit is contained in:
Georg Reinke 2017-04-10 11:39:35 +02:00
parent a6ffa0ed0d
commit 1365f9d026
1 changed files with 3 additions and 0 deletions
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3
lib/queue_signalled.c
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@ -39,8 +39,11 @@ int queue_signalled_push_many(struct queue_signalled *qs, void *ptr[], size_t cn
int queue_signalled_pull_many(struct queue_signalled *qs, void *ptr[], size_t cnt)
{
/* Make sure that qs->mt is unlocked if this thread gets cancelled. */
pthread_cleanup_push((void (*)(void*)) pthread_mutex_unlock, &qs->mt);
pthread_mutex_lock(&qs->mt);
pthread_cond_wait(&qs->ready, &qs->mt);
pthread_mutex_unlock(&qs->mt);
pthread_cleanup_pop(0);
return queue_pull_many(&qs->q, ptr, cnt);
}