下列材料可供实现并发循环队列时参考： https://github.com/facebook/folly/blob/main/folly/ProducerConsumerQueue.h https://moodycamel.com/blog/2013/a-fast-lock-free-queue-for-c++.htm https://preshing.com/20120625/memory-ordering-at-compile-time/ https://github.com/cameron314/readerwriterqueue