diff options
Diffstat (limited to 'nptl/pthread_mutex_trylock.c')
| -rw-r--r-- | nptl/pthread_mutex_trylock.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/nptl/pthread_mutex_trylock.c b/nptl/pthread_mutex_trylock.c index 94d519233b..66aca8e4b2 100644 --- a/nptl/pthread_mutex_trylock.c +++ b/nptl/pthread_mutex_trylock.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2005, 2006 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2005, 2006, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -91,9 +91,11 @@ __pthread_mutex_trylock (mutex) if ((oldval & FUTEX_OWNER_DIED) != 0) { /* The previous owner died. Try locking the mutex. */ - int newval + int newval = id | (oldval & FUTEX_WAITERS); + + newval = atomic_compare_and_exchange_val_acq (&mutex->__data.__lock, - id, oldval); + newval, oldval); if (newval != oldval) { |