加锁 同时(shí )队列可(kě )以无限长吗(ma ) 什么时候消减(jiǎn ),同(tóng )时(shí )采(cǎi )用(yòng )了(le )弱引用避(bì )免(miǎn )队列过(guò )大,造成gc压力 源码如(rú )下get recycle scavenge每次都(dōu )是(shì )从head节点获取,如(rú )果(guǒ )获取不(bú )到就next,这(zhè )些(xiē )队列并不删(shān )除,jvm会自动在内存(cún )不够的时候删除
Copyright © 2008-2018