加锁 同时队列可以无限长(zhǎng )吗 什(shí )么(me )时候消减,同(tóng )时采用了弱(ruò )引用避免(miǎn )队(duì )列过大,造成gc压力(lì ) 源码(mǎ )如下get recycle scavenge每次(cì )都(dōu )是从(cóng )head节点获取,如(rú )果(guǒ )获取(qǔ )不(bú )到(dào )就(jiù )next,这些队列并不(bú )删除,jvm会(huì )自(zì )动在内存不(bú )够的(de )时候删(shān )除
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