oskit/oskit-20020317/threads/pthread_locking.h

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2016-02-19 15:02:31 +03:00
/*
* Copyright (c) 1998, 1999 University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit 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 GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
#ifndef _OSKIT_PTHREADS_LOCKING_H_
#define _OSKIT_PTHREADS_LOCKING_H_
#ifdef THREADS_SPINLOCKS
#define PTHREAD_LOCK_INITIALIZER SPIN_LOCK_INITIALIZER
#define pthread_lock_t spin_lock_t
#define pthread_lock_init(lock) spin_lock_init((spin_lock_t *) lock)
#define pthread_try_lock(lock) spin_try_lock((spin_lock_t *) lock)
#define pthread_lock_locked(lock) spin_lock_locked((spin_lock_t *) lock)
#define pthread_unlock(lock) spin_unlock((spin_lock_t *) lock)
/*
* When DEBUG is on, try a bit of deadlock detection on locks.
*/
#ifdef THREADS_DEBUG
extern void pthread_lock_debug(pthread_lock_t *lock);
#define pthread_lock(lock) pthread_lock_debug((spin_lock_t *) lock)
#else
#define pthread_lock(lock) spin_lock((spin_lock_t *) lock)
#endif
#else
#define pthread_lock_t spin_lock_t
#define PTHREAD_LOCK_INITIALIZER SPIN_LOCK_INITIALIZER
#define pthread_lock_init(lock) ((void)(lock))
#define pthread_try_lock(lock) ((void)(lock), 1)
#define pthread_lock_locked(lock) ((void)(lock), 0)
#define pthread_unlock(lock) ((void)(lock))
#define pthread_lock(lock) ((void)(lock))
#endif
#endif /* _OSKIT_PTHREADS_LOCKING_H_ */