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理解 JVM:Java 内存模型(二)——volatile | alexpdh's blog

 6 years ago
source link: http://alexpdh.com/2017/11/11/java-memory-model-02/?
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概述java 内存模型的核心是围绕着在并发过程中如何处理原子性、可见性、有序性这3个特性来展开的,它们是多线程编程的核心。原子性(Atomicity):是指一个操作是不可中断的,即使是多个线程同时执行的情况下,一个操作一旦开始,就不会被其它线程干扰。对于基本类型的读写操作基本都具有原子性的(在32位操作系统中 long 和 double 类型数据的读写不是原子性的,因为它们有64位)。可

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