diff options
Diffstat (limited to 'libpthread/sysdeps/generic/pt-rwlock-trywrlock.c')
-rw-r--r-- | libpthread/sysdeps/generic/pt-rwlock-trywrlock.c | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/libpthread/sysdeps/generic/pt-rwlock-trywrlock.c b/libpthread/sysdeps/generic/pt-rwlock-trywrlock.c deleted file mode 100644 index 6b9c5b56..00000000 --- a/libpthread/sysdeps/generic/pt-rwlock-trywrlock.c +++ /dev/null @@ -1,46 +0,0 @@ -/* Try to acquire a rwlock for writing. Generic version. - Copyright (C) 2002 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <pthread.h> -#include <assert.h> - -#include <pt-internal.h> - -/* Try to acquire RWLOCK for writing. */ -int -pthread_rwlock_trywrlock (struct __pthread_rwlock *rwlock) -{ - __pthread_spin_lock (&rwlock->__lock); - if (__pthread_spin_trylock (&rwlock->__held) == 0) - /* Successfully acquired the lock. */ - { - assert (rwlock->readerqueue == 0); - assert (rwlock->writerqueue == 0); - assert (rwlock->readers == 0); - - __pthread_spin_unlock (&rwlock->__lock); - return 0; - } - - /* The lock is busy. */ - - __pthread_spin_unlock (&rwlock->__lock); - - return EBUSY; -} |