加锁 同时(shí )队列可以无限长吗 什(shí )么(me )时候(hòu )消减,同(tóng )时采用了弱引(yǐn )用(yòng )避(bì )免队列过大(dà ),造成gc压力 源(yuán )码如(rú )下get recycle scavenge每次(cì )都(dōu )是从head节(jiē )点获(huò )取,如(rú )果获取不(bú )到就next,这些(xiē )队列并不删(shān )除,jvm会自动(dòng )在内存不(bú )够的(de )时候(hòu )删除
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