加锁(suǒ ) 同时队列可以无(wú )限(xiàn )长(zhǎng )吗(ma ) 什么(me )时(shí )候消减,同(tóng )时(shí )采用(yòng )了弱引用避(bì )免队列过(guò )大,造成(chéng )gc压力 源码如下get recycle scavenge每次都是从(cóng )head节点获取,如果获取(qǔ )不到(dào )就next,这些队列(liè )并不删(shān )除,jvm会自动在(zài )内存不够(gòu )的时(shí )候(hòu )删除
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