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Diffstat (limited to 'src/thread/pthread_mutex_unlock.c')
-rw-r--r--src/thread/pthread_mutex_unlock.c19
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;
+}