加锁 同时队列(liè )可(kě )以无限(xiàn )长(zhǎng )吗 什么时候消减(jiǎn ),同时采用了弱引用(yòng )避免队列过大,造(zào )成(chéng )gc压力 源码(mǎ )如下get recycle scavenge每次(cì )都(dōu )是从head节(jiē )点(diǎn )获(huò )取,如果(guǒ )获取(qǔ )不到(dào )就(jiù )next,这些队列并不删除(chú ),jvm会(huì )自动在(zài )内存不(bú )够(gòu )的时候删除(chú )
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