volitile与原子类atomic区别

volatile的内存模型:
http://blog.csdn.net/basycia/article/details/52058986
volitile与原子类atomic区别:
http://blog.csdn.net/jurson99/article/details/53406849
atomic保证类原子性,volitile保证多个线程可见性
http://blog.csdn.net/a_yyc1990/article/details/41478639
atomic使用cas保证update原子性:
cas介绍:
https://www.cnblogs.com/Mainz/p/3546347.html

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