https://blog.csdn.net/xj178926426/article/details/54345449
EventLoop.cpp
__thread EventLoop* t_loopInThisThread = 0; EventLoop::EventLoop() { if (t_loopInThisThread) { LOG(INFO)<<"Another EventLoop " << t_loopInThisThread << " exists in this thread " << threadId_; } else { t_loopInThisThread = this; } }
原文：https://www.cnblogs.com/Jacket-K/p/9835890.html