加锁 同时队(duì )列可以无(wú )限(xiàn )长吗 什么时候消减,同时采用了弱引用避(bì )免(miǎn )队(duì )列过大,造(zào )成gc压(yā )力 源(yuán )码如下get recycle scavenge每次(cì )都(dōu )是从(cóng )head节(jiē )点(diǎn )获(huò )取,如果获取不到(dào )就(jiù )next,这些(xiē )队(duì )列并(bìng )不(bú )删除,jvm会自动在(zài )内存不(bú )够的时候(hòu )删除
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