加锁 同(tóng )时(shí )队(duì )列可以(yǐ )无限长吗(ma ) 什么时候消减,同时采用了弱(ruò )引用避免队列过(guò )大(dà ),造成gc压(yā )力 源码(mǎ )如(rú )下(xià )get recycle scavenge每(měi )次都是从(cóng )head节点获取,如(rú )果获(huò )取(qǔ )不到(dào )就next,这些队列(liè )并(bìng )不(bú )删除(chú ),jvm会(huì )自动在内存不(bú )够的时候删(shān )除
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