加锁 同时队列(liè )可以无限长吗 什(shí )么(me )时候(hòu )消减(jiǎn ),同(tóng )时(shí )采(cǎi )用了弱(ruò )引用避(bì )免队列(liè )过大,造成gc压力 源码如下get recycle scavenge每次都(dōu )是从head节点获(huò )取,如果获取不到(dào )就next,这些(xiē )队列(liè )并不删(shān )除,jvm会自动(dòng )在(zài )内存(cún )不够(gòu )的时(shí )候删(shān )除
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