加锁 同时队(duì )列(liè )可以无限长吗 什么时候(hòu )消减,同(tóng )时(shí )采用了弱引(yǐn )用避(bì )免(miǎn )队(duì )列过(guò )大,造成gc压力 源(yuán )码如(rú )下get recycle scavenge每(měi )次都(dōu )是从(cóng )head节点(diǎn )获取,如(rú )果获取不(bú )到就next,这(zhè )些队(duì )列并不删除,jvm会自动在内存(cún )不(bú )够的时候删除
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