Function read_thread

test/bthread_rwlock_unittest.cpp:406–425

void* read_thread(void* arg) {
    const size_t N = 10000;
#ifdef CHECK_RWLOCK
    pthread_rwlock_t* lock = (pthread_rwlock_t*)arg;
#else
    pthread_mutex_t* lock = (pthread_mutex_t*)arg;
#endif
    const long t1 = butil::cpuwide_time_ns();
    for (size_t i = 0; i < N; ++i) {
#ifdef CHECK_RWLOCK
        pthread_rwlock_rdlock(lock);
        pthread_rwlock_unlock(lock);
#else
        pthread_mutex_lock(lock);
        pthread_mutex_unlock(lock);
#endif
    }
    const long t2 = butil::cpuwide_time_ns();
    return new long((t2 - t1)/N);
}

void* write_thread(void*) {
    return NULL;