1 files changed, 9 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/thread/pthread_rwlock_trywrlock.c b/libc-top-half/musl/src/thread/pthread_rwlock_trywrlock.c
new file mode 100644
index 0000000..64d9d31
--- /dev/null
+++ b/libc-top-half/musl/src/thread/pthread_rwlock_trywrlock.c
@@ -0,0 +1,9 @@
+#include "pthread_impl.h"
+
+int __pthread_rwlock_trywrlock(pthread_rwlock_t *rw)
+{
+	if (a_cas(&rw->_rw_lock, 0, 0x7fffffff)) return EBUSY;
+	return 0;
+}
+
+weak_alias(__pthread_rwlock_trywrlock, pthread_rwlock_trywrlock);