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并发编程锁之synchronized总结 | Reactor

 6 years ago
source link: https://blog.reactor.top/2018/02/07/%E5%B9%B6%E5%8F%91%E7%BC%96%E7%A8%8B%E9%94%81%E4%B9%8Bsynchronized%E6%80%BB%E7%BB%93/?
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锁synchronized并发编程中数据同步需要依赖锁进行控制,上篇博文通过ReentrantLock源码分析也对Lock实现锁机制的大致原理有了一个了解,Lock主要是通过编码的方式实现锁,其核心就是:CAS+循环,CAS原子操作需要依赖底层硬件层特殊的CPU指令。这节我们来看下Java中另一种非常常见的实现同步的方式:synchronized。synchronized主要通过底层JVM进行实现

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