33 lines
674 B
C
33 lines
674 B
C
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#include "util.h"
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#include "rwsem.h"
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int init_rwsem(struct rw_semaphore *sem)
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{
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return pthread_rwlock_init(&sem->lock, NULL);
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}
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int exit_rwsem(struct rw_semaphore *sem)
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{
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return pthread_rwlock_destroy(&sem->lock);
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}
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int down_read(struct rw_semaphore *sem)
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{
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return perf_singlethreaded ? 0 : pthread_rwlock_rdlock(&sem->lock);
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}
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int up_read(struct rw_semaphore *sem)
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{
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return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
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}
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int down_write(struct rw_semaphore *sem)
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{
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return perf_singlethreaded ? 0 : pthread_rwlock_wrlock(&sem->lock);
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}
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int up_write(struct rw_semaphore *sem)
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{
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return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
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}
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