mirror of
https://github.com/openharmony/third_party_elfutils.git
synced 2026-08-26 20:37:33 -04:00
lizhenlin
79 lines
3.2 KiB
C
79 lines
3.2 KiB
C
/* Configuration definitions.
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Copyright (C) 2024 Red Hat, Inc.
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifndef LOCKS_H
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#define LOCKS_H 1
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#ifdef USE_LOCKS
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# include <pthread.h>
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# include <assert.h>
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# define rwlock_define(class,name) class pthread_rwlock_t name
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# define once_define(class,name) class pthread_once_t name = PTHREAD_ONCE_INIT
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# define RWLOCK_CALL(call) \
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({ int _err = pthread_rwlock_ ## call; assert_perror (_err); })
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# define ONCE_CALL(call) \
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({ int _err = pthread_ ## call; assert_perror (_err); })
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# define rwlock_init(lock) RWLOCK_CALL (init (&lock, NULL))
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# define rwlock_fini(lock) RWLOCK_CALL (destroy (&lock))
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# define rwlock_rdlock(lock) RWLOCK_CALL (rdlock (&lock))
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# define rwlock_wrlock(lock) RWLOCK_CALL (wrlock (&lock))
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# define rwlock_unlock(lock) RWLOCK_CALL (unlock (&lock))
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# define mutex_define(class,name) class pthread_mutex_t name
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# define MUTEX_CALL(call) \
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({ int _err = pthread_mutex_ ## call; assert_perror (_err); })
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# define mutex_init(lock) \
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({ pthread_mutexattr_t _attr; \
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pthread_mutexattr_init (&_attr); \
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pthread_mutexattr_settype (&_attr, PTHREAD_MUTEX_RECURSIVE); \
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MUTEX_CALL (init (&lock, &_attr)); })
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# define mutex_lock(_lock) MUTEX_CALL (lock (&_lock))
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# define mutex_unlock(lock) MUTEX_CALL (unlock (&lock))
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# define mutex_fini(lock) MUTEX_CALL (destroy (&lock))
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# define once(once_control, init_routine) \
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ONCE_CALL (once (&once_control, init_routine))
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#else
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/* Eventually we will allow multi-threaded applications to use the
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libraries. Therefore we will add the necessary locking although
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the macros used expand to nothing for now. */
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# define rwlock_define(class,name) class int name
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# define rwlock_init(lock) ((void) (lock))
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# define rwlock_fini(lock) ((void) (lock))
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# define rwlock_rdlock(lock) ((void) (lock))
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# define rwlock_wrlock(lock) ((void) (lock))
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# define rwlock_unlock(lock) ((void) (lock))
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# define mutex_define(class,name) class int name
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# define mutex_init(lock) ((void) (lock))
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# define mutex_lock(lock) ((void) (lock))
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# define mutex_unlock(lock) ((void) (lock))
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# define mutex_fini(lock) ((void) (lock))
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# define once_define(class,name)
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# define once(once_control, init_routine) init_routine()
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#endif /* USE_LOCKS */
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#endif /* locks.h */
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