加(jiā )锁 同(tóng )时队列可以无(wú )限(xiàn )长吗(ma ) 什(shí )么(me )时候消减(jiǎn ),同时(shí )采用(yòng )了弱引用避免队列过(guò )大,造成gc压力(lì ) 源码(mǎ )如下get recycle scavenge每次都(dōu )是从(cóng )head节点获取,如果获(huò )取不(bú )到就(jiù )next,这(zhè )些队列并不删除,jvm会(huì )自动(dòng )在内(nèi )存不(bú )够(gòu )的时候(hòu )删除
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