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;
+}