加锁 同时队列可(kě )以(yǐ )无(wú )限(xiàn )长吗 什(shí )么(me )时候消(xiāo )减,同时采用(yòng )了弱引用避(bì )免队(duì )列过(guò )大,造成gc压(yā )力 源码(mǎ )如下get recycle scavenge每次都是(shì )从(cóng )head节点获(huò )取(qǔ ),如果(guǒ )获取不到就next,这些队列并不(bú )删(shān )除,jvm会自动在内(nèi )存不(bú )够的时候删(shān )除
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