1#include "util.h"
 2#include "rwsem.h"
 3
 4int init_rwsem(struct rw_semaphore *sem)
 5{
 6	return pthread_rwlock_init(&sem->lock, NULL);
 7}
 8
 9int exit_rwsem(struct rw_semaphore *sem)
10{
11	return pthread_rwlock_destroy(&sem->lock);
12}
13
14int down_read(struct rw_semaphore *sem)
15{
16	return perf_singlethreaded ? 0 : pthread_rwlock_rdlock(&sem->lock);
17}
18
19int up_read(struct rw_semaphore *sem)
20{
21	return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
22}
23
24int down_write(struct rw_semaphore *sem)
25{
26	return perf_singlethreaded ? 0 : pthread_rwlock_wrlock(&sem->lock);
27}
28
29int up_write(struct rw_semaphore *sem)
30{
31	return perf_singlethreaded ? 0 : pthread_rwlock_unlock(&sem->lock);
32}