加(jiā )锁 同时队(duì )列可以无(wú )限长吗 什么时候消(xiāo )减(jiǎn ),同(tóng )时(shí )采(cǎi )用了弱引用(yòng )避免队列过大,造成gc压力 源(yuán )码(mǎ )如(rú )下(xià )get recycle scavenge每次(cì )都是从head节点(diǎn )获取,如果获取不到就next,这些队(duì )列(liè )并(bìng )不删除,jvm会(huì )自动在内存不够(gòu )的时候(hòu )删(shān )除
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