"A sad thing about life is that when you meet someone who means a lot to you only to find out in the end that it was never bound to be and you just have to let go." 久久久精品高清加锁 同时队列可以无限长吗 什么时候消减,同时采用了弱引用避免队列过大,造成gc压力 源码如下get recycle scavenge每次都是从head节点获取,如果获取不到就next,这些队列并不删除,jvm会自动在内存不够的时候删除