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Diffstat (limited to 'src/thread/pthread_mutex_timedlock.c')
-rw-r--r--src/thread/pthread_mutex_timedlock.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/thread/pthread_mutex_timedlock.c b/src/thread/pthread_mutex_timedlock.c
new file mode 100644
index 00000000..5dfad94f
--- /dev/null
+++ b/src/thread/pthread_mutex_timedlock.c
@@ -0,0 +1,15 @@
+#include "pthread_impl.h"
+
+int pthread_mutex_timedlock(pthread_mutex_t *m, const struct timespec *at)
+{
+ int r, w=0;
+ while ((r=pthread_mutex_trylock(m)) == EBUSY) {
+ if (!w) a_inc(&m->__waiters), w++;
+ if (__timedwait(&m->__lock, 1, CLOCK_REALTIME, at, 0) == ETIMEDOUT) {
+ if (w) a_dec(&m->__waiters);
+ return ETIMEDOUT;
+ }
+ }
+ if (w) a_dec(&m->__waiters);
+ return r;
+}