加(jiā )锁(suǒ ) 同时(shí )队列(liè )可(kě )以无(wú )限(xiàn )长(zhǎng )吗 什么时候消减,同(tóng )时采用了弱引(yǐn )用(yòng )避免(miǎn )队列过(guò )大,造成gc压力 源码(mǎ )如(rú )下get recycle scavenge每次都是(shì )从head节点获取,如(rú )果(guǒ )获取不到就next,这些队(duì )列并(bìng )不删(shān )除,jvm会(huì )自动(dòng )在内存不(bú )够的时(shí )候(hòu )删除
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