加(jiā )锁(suǒ ) 同时队列可以无限(xiàn )长吗 什么时候消(xiāo )减(jiǎn ),同(tóng )时采(cǎi )用(yòng )了弱(ruò )引(yǐn )用避免(miǎn )队列过大,造成gc压(yā )力(lì ) 源码如(rú )下get recycle scavenge每(měi )次都是从(cóng )head节(jiē )点获取(qǔ ),如(rú )果获取不到就next,这些队列并不删除(chú ),jvm会自(zì )动在(zài )内存不(bú )够的时(shí )候删除(chú )
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