加锁 同时队列可以无限(xiàn )长吗 什(shí )么时候(hòu )消减,同时采用(yòng )了弱引(yǐn )用(yòng )避免队(duì )列过大,造成gc压(yā )力 源码如下(xià )get recycle scavenge每次(cì )都(dōu )是从head节点获(huò )取(qǔ ),如(rú )果获取不(bú )到(dào )就next,这些队列并不删(shān )除,jvm会自(zì )动(dòng )在内存不够的时(shí )候(hòu )删除
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