加(jiā )锁 同时(shí )队列可以无(wú )限长吗 什么时候消减,同时(shí )采用(yòng )了弱引用(yòng )避(bì )免(miǎn )队列过大,造(zào )成gc压力 源(yuán )码如(rú )下(xià )get recycle scavenge每次(cì )都是(shì )从head节点获(huò )取,如果获取不到就next,这(zhè )些(xiē )队列并(bìng )不删(shān )除,jvm会自(zì )动(dòng )在内存不够的时(shí )候删(shān )除
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