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#ifndef _PERF_RWSEM_H
#define _PERF_RWSEM_H
#include <pthread.h>
struct rw_semaphore {
pthread_rwlock_t lock;
};
int init_rwsem(struct rw_semaphore *sem);
int exit_rwsem(struct rw_semaphore *sem);
int down_read(struct rw_semaphore *sem);
int up_read(struct rw_semaphore *sem);
int down_write(struct rw_semaphore *sem);
int up_write(struct rw_semaphore *sem);
#endif /* _PERF_RWSEM_H */
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