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