enable private futex for process-local robust mutexes

[musl] / src / thread / pthread_rwlock_unlock.c

diff --git a/src/thread/pthread_rwlock_unlock.c b/src/thread/pthread_rwlock_unlock.c
index 5edca63..7b5eec8 100644 (file)
--- a/src/thread/pthread_rwlock_unlock.c
+++ b/src/thread/pthread_rwlock_unlock.c
@@ -2,7 +2,7 @@
 
 int pthread_rwlock_unlock(pthread_rwlock_t *rw)
 {
-       int val, cnt, waiters, new;
+       int val, cnt, waiters, new, priv = rw->_rw_shared^128;
 
        do {
                val = rw->_rw_lock;
@@ -12,7 +12,7 @@ int pthread_rwlock_unlock(pthread_rwlock_t *rw)
        } while (a_cas(&rw->_rw_lock, val, new) != val);
 
        if (!new && (waiters || val<0))
-               __wake(&rw->_rw_lock, 1, 0);
+               __wake(&rw->_rw_lock, cnt, priv);
 
        return 0;
 }