initial check-in, version 0.5.0v0.5.0

1 files changed, 17 insertions, 0 deletions

diff --git a/src/thread/pthread_rwlock_unlock.c b/src/thread/pthread_rwlock_unlock.c
new file mode 100644
index 00000000..f39117e7
--- /dev/null
+++ b/src/thread/pthread_rwlock_unlock.c
@@ -0,0 +1,17 @@
+#include "pthread_impl.h"
+
+int pthread_rwlock_unlock(pthread_rwlock_t *rw)
+{
+	struct pthread *self = pthread_self();
+	if (rw->__owner == self->tid) {
+		rw->__owner = 0;
+		a_store(&rw->__wrlock, 0);
+		if (rw->__waiters)
+			__wake(&rw->__wrlock, -1, 0);
+		return 0;
+	}
+	a_dec(&rw->__readers);
+	if (rw->__waiters && !rw->__readers)
+		__wake(&rw->__readers, 1, 0);
+	return 0;
+}