加(jiā )锁 同时队列可(kě )以无限(xiàn )长吗 什(shí )么时(shí )候消减(jiǎn ),同时采用了弱(ruò )引用避免队列过(guò )大(dà ),造成gc压力 源码如(rú )下get recycle scavenge每次都(dōu )是从head节(jiē )点获取,如(rú )果获(huò )取(qǔ )不到就next,这些(xiē )队列(liè )并不删除(chú ),jvm会(huì )自(zì )动在(zài )内存不够(gòu )的时候(hòu )删除
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