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https://github.com/openvswitch/ovs
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ec68790f6d
The only tricky part here is that I'm throwing in annotations to allow "sparse" to report unbalanced locking. Signed-off-by: Ben Pfaff <blp@nicira.com> Acked-by: Ethan Jackson <ethan@nicira.com>
61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
/*
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* Copyright (c) 2013 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __CHECKER__
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#error "Use this header only with sparse. It is not a correct implementation."
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#endif
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/* Get actual <pthread.h> definitions for us to annotate and build on. */
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#include_next <pthread.h>
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#include "compiler.h"
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int pthread_mutex_lock(pthread_mutex_t *mutex) OVS_ACQUIRES(mutex);
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int pthread_mutex_unlock(pthread_mutex_t *mutex) OVS_RELEASES(mutex);
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int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock) OVS_ACQUIRES(rwlock);
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int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock) OVS_ACQUIRES(rwlock);
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int pthread_rwlock_unlock(pthread_rwlock_t *rwlock) OVS_RELEASES(rwlock);
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int pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *mutex)
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OVS_MUST_HOLD(mutex);
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#define pthread_mutex_trylock(MUTEX) \
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({ \
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int retval = pthread_mutex_trylock(mutex); \
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if (!retval) { \
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OVS_ACQUIRE(MUTEX); \
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} \
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retval; \
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})
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#define pthread_rwlock_tryrdlock(RWLOCK) \
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({ \
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int retval = pthread_rwlock_tryrdlock(rwlock); \
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if (!retval) { \
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OVS_ACQUIRE(RWLOCK); \
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} \
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retval; \
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})
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#define pthread_rwlock_trywrlock(RWLOCK) \
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({ \
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int retval = pthread_rwlock_trywrlock(rwlock); \
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if (!retval) { \
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OVS_ACQUIRE(RWLOCK); \
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} \
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retval; \
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})
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