diff options
Diffstat (limited to 'nptl/sysdeps/pthread/pthread_rwlock_unlock.c')
| -rw-r--r-- | nptl/sysdeps/pthread/pthread_rwlock_unlock.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/nptl/sysdeps/pthread/pthread_rwlock_unlock.c b/nptl/sysdeps/pthread/pthread_rwlock_unlock.c index 6e0c92ba3f..9cae8b6c22 100644 --- a/nptl/sysdeps/pthread/pthread_rwlock_unlock.c +++ b/nptl/sysdeps/pthread/pthread_rwlock_unlock.c @@ -24,27 +24,32 @@ #include <pthreadP.h> /* Unlock RWLOCK. */ -int __pthread_rwlock_unlock (pthread_rwlock_t *rwlock) +int +__pthread_rwlock_unlock (pthread_rwlock_t *rwlock) { - lll_mutex_lock(rwlock->__data.__lock); + lll_mutex_lock (rwlock->__data.__lock); if (rwlock->__data.__writer) rwlock->__data.__writer = 0; else - rwlock->__data.__nr_readers--; - if (!rwlock->__data.__nr_readers) + --rwlock->__data.__nr_readers; + if (rwlock->__data.__nr_readers == 0) { if (rwlock->__data.__nr_writers_queued) { ++rwlock->__data.__writer_wakeup; - lll_futex_wake(&rwlock->__data.__writer_wakeup, 1); + lll_mutex_unlock (rwlock->__data.__lock); + lll_futex_wake (&rwlock->__data.__writer_wakeup, 1); + return 0; } - else + else if (rwlock->__data.__nr_readers_queued) { ++rwlock->__data.__readers_wakeup; - lll_futex_wake(&rwlock->__data.__readers_wakeup, INT_MAX); + lll_mutex_unlock (rwlock->__data.__lock); + lll_futex_wake (&rwlock->__data.__readers_wakeup, INT_MAX); + return 0; } } - lll_mutex_unlock(rwlock->__data.__lock); + lll_mutex_unlock (rwlock->__data.__lock); return 0; } |