diff options
Diffstat (limited to 'nptl/pthread_rwlock_unlock.c')
| -rw-r--r-- | nptl/pthread_rwlock_unlock.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/nptl/pthread_rwlock_unlock.c b/nptl/pthread_rwlock_unlock.c index d4923838e7..3ebddeb246 100644 --- a/nptl/pthread_rwlock_unlock.c +++ b/nptl/pthread_rwlock_unlock.c @@ -22,6 +22,8 @@ #include <pthread.h> #include <pthreadP.h> #include <stap-probe.h> +#include <elide.h> + /* Unlock RWLOCK. */ int @@ -29,6 +31,10 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock) { LIBC_PROBE (rwlock_unlock, 1, rwlock); + if (ELIDE_UNLOCK (rwlock->__data.__writer == 0 + && rwlock->__data.__nr_readers == 0)) + return 0; + lll_lock (rwlock->__data.__lock, rwlock->__data.__shared); if (rwlock->__data.__writer) rwlock->__data.__writer = 0; |