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Java Synchronized 锁的实现原理与应用 (偏向锁,轻量锁,重量锁)-wx5c78c8b1dbb1b的博...
source link: https://blog.51cto.com/14220760/2366218
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简介在JavaSE1.6之前,Synchronized被称为重量级锁.在SE1.6之后进行了各种优化,就出现了偏向锁,轻量锁,目的是为了减少获得锁和释放锁带来的性能消耗.Synchroized的使用(三种形式)(1)对于普通同步方法,锁是当前实例对象.如下代码示例:解释:对于set和get方法来说,都是在方法上使用了同步关键字,所以他们是同步方法,锁的就是当前的实例对象,怎么理解了,看下面的mai
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