加锁 同时队(duì )列可以无限(xiàn )长吗 什(shí )么时(shí )候(hòu )消减,同时采用了(le )弱引用(yòng )避免队(duì )列过(guò )大(dà ),造成gc压力 源码如下get recycle scavenge每次都(dōu )是(shì )从head节(jiē )点(diǎn )获(huò )取,如果(guǒ )获(huò )取不(bú )到就next,这些队列并不删除,jvm会自(zì )动在内存(cún )不够(gòu )的时候(hòu )删(shān )除(chú )
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