加(jiā )锁 同时队(duì )列可以无限(xiàn )长吗 什么时(shí )候消减,同(tóng )时采(cǎi )用(yòng )了弱引用避(bì )免队列过大(dà ),造成gc压力 源码如下get recycle scavenge每次都(dōu )是(shì )从(cóng )head节点获取(qǔ ),如(rú )果获取(qǔ )不到就next,这(zhè )些(xiē )队(duì )列(liè )并不(bú )删除(chú ),jvm会自动(dòng )在(zài )内存不够的时(shí )候删除(chú )
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