加锁 同时(shí )队列可以无限长吗 什(shí )么(me )时候消减,同(tóng )时采(cǎi )用(yòng )了弱引(yǐn )用避(bì )免队列过大,造成gc压力 源码如下(xià )get recycle scavenge每(měi )次都是(shì )从(cóng )head节(jiē )点(diǎn )获取(qǔ ),如果获取不(bú )到(dào )就next,这些队列(liè )并不(bú )删除,jvm会自动在内(nèi )存不(bú )够的时(shí )候(hòu )删除
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