加锁 同(tóng )时(shí )队列可以无限(xiàn )长吗(ma ) 什么时候消减(jiǎn ),同(tóng )时采用(yòng )了弱引用(yòng )避免(miǎn )队(duì )列过大,造(zào )成gc压力(lì ) 源(yuán )码如下get recycle scavenge每次都是从head节点(diǎn )获取(qǔ ),如果(guǒ )获(huò )取不到(dào )就next,这些队列并不(bú )删(shān )除,jvm会自动在(zài )内存(cún )不够的时候(hòu )删除
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