加锁 同时(shí )队列可以无限(xiàn )长吗 什么时(shí )候(hòu )消(xiāo )减(jiǎn ),同时采用(yòng )了弱引(yǐn )用避免队列过大,造(zào )成gc压(yā )力 源码如(rú )下get recycle scavenge每次(cì )都(dōu )是(shì )从(cóng )head节点获(huò )取,如果(guǒ )获取不到就(jiù )next,这些队列(liè )并(bìng )不删(shān )除,jvm会自(zì )动在内(nèi )存不够的时(shí )候删除
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