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wait for acknowledgements correctly

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pthread_cond_wait() can have spurious wakeups, so we need to be sure
that the condition is actually true when we return from this function.
Thanks to Chris Brannon for the patch.
This commit is contained in:
William Hubbs 2009-06-25 17:05:51 -05:00
commit 3687f16b09
1 changed files with 2 additions and 1 deletions
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softsynth.c
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@ -170,7 +170,8 @@ static void request_espeak_stop(void)
pthread_mutex_lock(&queue_guard);
runner_must_stop = 1;
pthread_cond_signal(&runner_awake); /* Wake runner, if necessary. */
pthread_cond_wait(&stop_acknowledged, &queue_guard);
while(runner_must_stop == 1)
pthread_cond_wait(&stop_acknowledged, &queue_guard); /* wait for acknowledgement. */
pthread_mutex_unlock(&queue_guard);
}