99     pthread_mutex_t mutex;  in mutex_performance_test_once()  local
104     pthread_mutex_init(&mutex, &attr);  in mutex_performance_test_once()
107     pthread_mutex_lock(&mutex);  in mutex_performance_test_once()
108     pthread_mutex_unlock(&mutex);  in mutex_performance_test_once()
110     pthread_mutex_lock(&mutex);  in mutex_performance_test_once()
111     pthread_mutex_unlock(&mutex);  in mutex_performance_test_once()
113     pthread_mutex_lock(&mutex);  in mutex_performance_test_once()
114     pthread_mutex_unlock(&mutex);  in mutex_performance_test_once()
116     pthread_mutex_lock(&mutex);  in mutex_performance_test_once()
117     pthread_mutex_unlock(&mutex);  in mutex_performance_test_once()
119     pthread_mutex_destroy(&mutex);  in mutex_performance_test_once()