1 files changed, 19 insertions, 0 deletions
diff --git a/src/thread/pthread_mutex_unlock.c b/src/thread/pthread_mutex_unlock.c
new file mode 100644
index 00000000..23e64ac8
--- /dev/null
+++ b/src/thread/pthread_mutex_unlock.c
@@ -0,0 +1,19 @@
+#include "pthread_impl.h"
+
+int pthread_mutex_unlock(pthread_mutex_t *m)
+{
+	if (m->__type == PTHREAD_MUTEX_RECURSIVE) {
+		if (a_fetch_add(&m->__lock, -1)==1 && m->__waiters)
+			__wake(&m->__lock, 1, 0);
+		return 0;
+	}
+
+	if (m->__type == PTHREAD_MUTEX_ERRORCHECK
+	 && m->__owner != pthread_self())
+	 	return EPERM;
+
+	m->__owner = 0;
+	m->__lock = 0;
+	if (m->__waiters) __wake(&m->__lock, 1, 0);
+	return 0;
+}