加锁(suǒ ) 同时(shí )队列(liè )可(kě )以无(wú )限(xiàn )长吗 什么时候(hòu )消(xiāo )减(jiǎn ),同时(shí )采用了(le )弱引(yǐn )用(yòng )避免(miǎn )队(duì )列过大,造成(chéng )gc压(yā )力 源码(mǎ )如(rú )下get recycle scavenge每次(cì )都是从(cóng )head节点获取,如果(guǒ )获取(qǔ )不到(dào )就next,这些队列并不删(shān )除,jvm会(huì )自动在内存不够的时候(hòu )删除
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