加(jiā )锁 同时队列可以无(wú )限长吗 什么(me )时(shí )候(hòu )消(xiāo )减,同(tóng )时(shí )采(cǎi )用了(le )弱引(yǐn )用(yòng )避免队(duì )列(liè )过大,造成gc压力 源码如(rú )下get recycle scavenge每(měi )次(cì )都是从head节点(diǎn )获取,如果获取不(bú )到就(jiù )next,这些队列并不删(shān )除(chú ),jvm会自(zì )动(dòng )在(zài )内存(cún )不够的时候删除
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