加锁 同时队(duì )列可以无限长吗 什么时候消减,同(tóng )时采(cǎi )用(yòng )了弱引用避(bì )免队列(liè )过大(dà ),造成gc压(yā )力(lì ) 源码(mǎ )如(rú )下get recycle scavenge每次都是从head节点(diǎn )获取,如(rú )果(guǒ )获取不(bú )到就next,这(zhè )些(xiē )队(duì )列并不(bú )删(shān )除,jvm会(huì )自动(dòng )在(zài )内存不够的(de )时候删除
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