diff options
Diffstat (limited to 'nptl/pthread_mutex_lock.c')
| -rw-r--r-- | nptl/pthread_mutex_lock.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/nptl/pthread_mutex_lock.c b/nptl/pthread_mutex_lock.c index b76475b..8c48503 100644 --- a/nptl/pthread_mutex_lock.c +++ b/nptl/pthread_mutex_lock.c @@ -197,11 +197,14 @@ __pthread_mutex_lock_full (pthread_mutex_t *mutex) { /* Try to acquire the lock through a CAS from 0 (not acquired) to our TID | assume_other_futex_waiters. */ - if (__glibc_likely ((oldval == 0) - && (atomic_compare_and_exchange_bool_acq - (&mutex->__data.__lock, - id | assume_other_futex_waiters, 0) == 0))) - break; + if (__glibc_likely (oldval == 0)) + { + oldval + = atomic_compare_and_exchange_val_acq (&mutex->__data.__lock, + id | assume_other_futex_waiters, 0); + if (__glibc_likely (oldval == 0)) + break; + } if ((oldval & FUTEX_OWNER_DIED) != 0) { |