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#ifndef _PERF_RWSEM_H
#define _PERF_RWSEM_H
#include <pthread.h>
#include "mutex.h"
/*
* Mutexes have additional error checking. Enable to use a mutex rather than a
* rwlock for debugging.
*/
#define RWS_ERRORCHECK 0
struct LOCKABLE rw_semaphore {
#if RWS_ERRORCHECK
struct mutex mtx;
#else
pthread_rwlock_t lock;
#endif
};
int init_rwsem(struct rw_semaphore *sem);
int exit_rwsem(struct rw_semaphore *sem);
int down_read(struct rw_semaphore *sem) SHARED_LOCK_FUNCTION(sem);
int up_read(struct rw_semaphore *sem) UNLOCK_FUNCTION(sem);
int down_write(struct rw_semaphore *sem) EXCLUSIVE_LOCK_FUNCTION(sem);
int up_write(struct rw_semaphore *sem) UNLOCK_FUNCTION(sem);
#endif /* _PERF_RWSEM_H */
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