1 files changed, 15 insertions, 0 deletions
diff --git a/src/thread/pthread_rwlock_timedrdlock.c b/src/thread/pthread_rwlock_timedrdlock.c
new file mode 100644
index 0000000..290327d
--- /dev/null
+++ b/src/thread/pthread_rwlock_timedrdlock.c
@@ -0,0 +1,15 @@
+#include "pthread_impl.h"
+
+int pthread_rwlock_timedrdlock(pthread_rwlock_t *rw, const struct timespec *at)
+{
+	int w=0;
+	while (pthread_rwlock_tryrdlock(rw)) {
+		if (!w) a_inc(&rw->__waiters), w++;
+		if (__timedwait(&rw->__wrlock, 1, CLOCK_REALTIME, at, 0)==ETIMEDOUT) {
+			if (w) a_dec(&rw->__waiters);
+			return ETIMEDOUT;
+		}
+	}
+	if (w) a_dec(&rw->__waiters);
+	return 0;
+}