加锁 同时队(duì )列可以无限(xiàn )长吗 什(shí )么时候消减,同时采用(yòng )了(le )弱引用(yòng )避免(miǎn )队列(liè )过大(dà ),造(zào )成gc压力 源(yuán )码如下get recycle scavenge每(měi )次都是从head节点获取,如(rú )果获取(qǔ )不到(dào )就(jiù )next,这(zhè )些队(duì )列并(bìng )不删除(chú ),jvm会(huì )自动在内存(cún )不(bú )够的时候删除(chú )
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