rwsem.h

#ifndef __LINUX_RWSEM_H__
#define __LINUX_RWSEM_H__
 
#include <pthread.h>
 
struct rw_semaphore {
  pthread_rwlock_t lock;
};
 
#define init_rwsem(rwsem) pthread_rwlock_init(&(rwsem)->lock, NULL)
 
#define down_read(rwsem) pthread_rwlock_rdlock(&(rwsem)->lock)
 
#define down_write(rwsem) pthread_rwlock_wrlock(&(rwsem)->lock)
 
#define up_read(rwsem) pthread_rwlock_unlock(&(rwsem)->lock)
 
#define up_write(rwsem) pthread_rwlock_unlock(&(rwsem)->lock)
 
#endif /* __LINUX_RWSEM_H__ */