加锁 同(tóng )时队(duì )列可以无(wú )限(xiàn )长吗 什么时(shí )候消减(jiǎn ),同时(shí )采(cǎi )用了(le )弱(ruò )引用避(bì )免队列过大,造成gc压(yā )力 源(yuán )码如下get recycle scavenge每次(cì )都(dōu )是从head节点获取(qǔ ),如果(guǒ )获取不(bú )到就next,这(zhè )些队(duì )列并不删除,jvm会(huì )自动在内存(cún )不(bú )够(gòu )的时候删除(chú )
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