conclusion

1 files changed, 17 insertions, 0 deletions

diff --git a/05/musl-0.6.0/src/thread/pthread_rwlock_unlock.c b/05/musl-0.6.0/src/thread/pthread_rwlock_unlock.c
new file mode 100644
index 0000000..060e3fe
--- /dev/null
+++ b/05/musl-0.6.0/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->_rw_owner == self->tid) {
+		rw->_rw_owner = 0;
+		a_store(&rw->_rw_wrlock, 0);
+		if (rw->_rw_waiters)
+			__wake(&rw->_rw_wrlock, -1, 0);
+		return 0;
+	}
+	a_dec(&rw->_rw_readers);
+	if (rw->_rw_waiters && !rw->_rw_readers)
+		__wake(&rw->_rw_readers, 1, 0);
+	return 0;
+}