加锁 同时队列(liè )可以无(wú )限(xiàn )长(zhǎng )吗 什(shí )么时候消(xiāo )减,同(tóng )时采用了弱引(yǐn )用(yòng )避免(miǎn )队列过大,造成gc压力 源码如下get recycle scavenge每次都是从head节(jiē )点(diǎn )获取(qǔ ),如(rú )果(guǒ )获取不(bú )到就(jiù )next,这些(xiē )队(duì )列并不删除,jvm会自动在内存不够的(de )时(shí )候(hòu )删(shān )除
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