36   pthread_rwlock_t *lock = arg;  in test1()  local
41       err = pthread_rwlock_rdlock (lock);  in test1()
50       err = pthread_rwlock_unlock (lock);  in test1()
62   pthread_rwlock_t lock;  in main()  local
84   err = pthread_rwlock_init (&lock, &attr);  in main()
96       err = pthread_create (&tid[i], 0, test1, &lock);  in main()
106       pthread_rwlock_wrlock (&lock);  in main()
115       pthread_rwlock_unlock (&lock);  in main()
126   err = pthread_rwlock_tryrdlock (&lock);  in main()
130   err = pthread_rwlock_trywrlock (&lock);  in main()
134   err = pthread_rwlock_unlock (&lock);  in main()
138   err = pthread_rwlock_trywrlock (&lock);  in main()
142   err = pthread_rwlock_trywrlock (&lock);  in main()
146   err = pthread_rwlock_tryrdlock (&lock);  in main()
150   err = pthread_rwlock_unlock (&lock);  in main()
154   err = pthread_rwlock_destroy (&lock);  in main()