加锁 同(tóng )时(shí )队列可以无限(xiàn )长(zhǎng )吗 什(shí )么(me )时(shí )候消(xiāo )减(jiǎn ),同(tóng )时采用(yòng )了(le )弱引用避免队列过大,造(zào )成gc压力 源码如下get recycle scavenge每次都是从(cóng )head节点获取,如果获(huò )取不(bú )到就(jiù )next,这些队(duì )列并(bìng )不删除,jvm会自动在(zài )内存(cún )不够的(de )时(shí )候删除
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