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Diffstat (limited to 'nptl/pthread_rwlock_unlock.c')
| -rw-r--r-- | nptl/pthread_rwlock_unlock.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/nptl/pthread_rwlock_unlock.c b/nptl/pthread_rwlock_unlock.c index b8336f62bf..d2ad4b0375 100644 --- a/nptl/pthread_rwlock_unlock.c +++ b/nptl/pthread_rwlock_unlock.c @@ -40,8 +40,13 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock) rwlock->__data.__writer = 0; else --rwlock->__data.__nr_readers; + /* If there are still readers present, we do not yet need to wake writers + nor are responsible to wake any readers. */ if (rwlock->__data.__nr_readers == 0) { + /* Note that if there is a blocked writer, we effectively make it + responsible for waking any readers because we don't wake readers in + this case. */ if (rwlock->__data.__nr_writers_queued) { ++rwlock->__data.__writer_wakeup; |