81    pthread_rwlock_t mRWLock;  variable
85     pthread_rwlock_init(&mRWLock, NULL);  in RWLock()
88     pthread_rwlock_init(&mRWLock, NULL);  in RWLock()
95         pthread_rwlock_init(&mRWLock, &attr);  in RWLock()
98         pthread_rwlock_init(&mRWLock, NULL);  in RWLock()
102     pthread_rwlock_destroy(&mRWLock);  in ~RWLock()
105     return -pthread_rwlock_rdlock(&mRWLock);  in readLock()
108     return -pthread_rwlock_tryrdlock(&mRWLock);  in tryReadLock()
111     return -pthread_rwlock_wrlock(&mRWLock);  in writeLock()
114     return -pthread_rwlock_trywrlock(&mRWLock);  in tryWriteLock()
117     pthread_rwlock_unlock(&mRWLock);  in unlock()