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test_timed_thread: acquire mutex before calculating future time

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git-svn-id: https://conky.svn.sourceforge.net/svnroot/conky/trunk/conky1@803 7f574dfc-610e-0410-a909-a81674777703
This commit is contained in:
Philip Kovacs 2006-12-02 23:07:21 +00:00
parent fe7f6b52be
commit 03d0ad83b8
1 changed files with 7 additions and 5 deletions
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12
src/timed_thread.c
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@ -122,7 +122,9 @@ timed_thread_unlock (timed_thread* p_timed_thread)
} }
/* waits required interval for termination signal and returns 1 if got it, 0 otherwise */ /* thread waits interval_usecs for runnable_cond to be signaled. returns 1 if signaled,
* -1 on error, and 0 otherwise. caller should call timed_thread_exit() on any non-zero
* return value. */
int int
timed_thread_test (timed_thread* p_timed_thread) timed_thread_test (timed_thread* p_timed_thread)
{ {
@ -131,6 +133,10 @@ timed_thread_test (timed_thread* p_timed_thread)
assert (p_timed_thread != NULL); assert (p_timed_thread != NULL);
/* acquire runnable_cond mutex */
if (pthread_mutex_lock (&p_timed_thread->runnable_mutex))
return (-1); /* could not acquire runnable_cond mutex, so tell caller to exit thread */
/* get the absolute time in the future we stop waiting for condition to signal */ /* get the absolute time in the future we stop waiting for condition to signal */
clock_gettime (CLOCK_REALTIME, &abstime); clock_gettime (CLOCK_REALTIME, &abstime);
/* seconds portion of the microseconds interval */ /* seconds portion of the microseconds interval */
@ -141,10 +147,6 @@ timed_thread_test (timed_thread* p_timed_thread)
abstime.tv_sec += reltime.tv_sec; abstime.tv_sec += reltime.tv_sec;
abstime.tv_nsec += reltime.tv_nsec; abstime.tv_nsec += reltime.tv_nsec;
/* acquire runnable_cond mutex */
if (pthread_mutex_lock (&p_timed_thread->runnable_mutex))
return (-1); /* could not acquire runnable_cond mutex, so tell caller to exit thread */
/* release mutex and wait until future time for runnable_cond to signal */ /* release mutex and wait until future time for runnable_cond to signal */
rc = pthread_cond_timedwait (&p_timed_thread->runnable_cond, rc = pthread_cond_timedwait (&p_timed_thread->runnable_cond,
&p_timed_thread->runnable_mutex, &p_timed_thread->runnable_mutex,