加锁 同(tóng )时队(duì )列可(kě )以无限长吗 什(shí )么(me )时候(hòu )消(xiāo )减,同(tóng )时(shí )采用了弱引用避(bì )免(miǎn )队(duì )列过大,造成(chéng )gc压力 源(yuán )码(mǎ )如(rú )下get recycle scavenge每次都是从head节点获(huò )取,如(rú )果获(huò )取(qǔ )不到就next,这些(xiē )队列并不(bú )删(shān )除,jvm会自动在内存不够(gòu )的时(shí )候删除
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