Function rdlocker

test/bthread_rwlock_unittest.cpp:26–35

long start_time = butil::cpuwide_time_ms();
int c = 0;
void* rdlocker(void* arg) {
    auto rw = (bthread_rwlock_t*)arg;
    bthread_rwlock_rdlock(rw);
    LOG(INFO) << butil::string_printf("[%" PRIu64 "] I'm rdlocker, %d, %" PRId64 "ms\n",
                                      pthread_numeric_id(), ++c,
                                      butil::cpuwide_time_ms() - start_time);
    bthread_usleep(10000);
    bthread_rwlock_unlock(rw);
    return NULL;
}

void* wrlocker(void* arg) {
    auto rw = (bthread_rwlock_t*)arg;