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gthread: Use pthread_cond_timedwait_monotonic() if available

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Otherwise we have to rely on pthread_cond_timedwait() actually using
the monotonic clock, which might be true or not. On Android at least
it is using the realtime clock, no pthread_condattr_setclock() is available
but instead pthread_cond_timedwait_monotonic() can be used.
This commit is contained in:
Sebastian Dröge
2013-07-04 10:27:02 +02:00
parent a4c352cd99
commit dbdfcb69ce
2 changed files with 27 additions and 0 deletions
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9
glib/gthread-posix.c
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@@ -859,8 +859,17 @@ g_cond_wait_until (GCond *cond,
ts.tv_sec = end_time / 1000000;
ts.tv_nsec = (end_time % 1000000) * 1000;
#if defined(HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC)
if ((status = pthread_cond_timedwait_monotonic (g_cond_get_impl (cond), g_mutex_get_impl (mutex), &ts)) == 0)
return TRUE;
#elif defined(HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC_NP)
if ((status = pthread_cond_timedwait_monotonic_np (g_cond_get_impl (cond), g_mutex_get_impl (mutex), &ts)) == 0)
return TRUE;
#else
/* Pray that the cond is actually using the monotonic clock */
if ((status = pthread_cond_timedwait (g_cond_get_impl (cond), g_mutex_get_impl (mutex), &ts)) == 0)
return TRUE;
#endif
if G_UNLIKELY (status != ETIMEDOUT)
g_thread_abort (status, "pthread_cond_timedwait");