加(jiā )锁 同时(shí )队列可以无限(xiàn )长吗 什(shí )么时(shí )候(hòu )消减,同时(shí )采(cǎi )用了(le )弱引用避免队列(liè )过大(dà ),造成gc压力 源码如下get recycle scavenge每次(cì )都是从(cóng )head节(jiē )点(diǎn )获(huò )取,如(rú )果获取不(bú )到就next,这些(xiē )队列并不(bú )删除(chú ),jvm会自动在内(nèi )存不(bú )够的时(shí )候(hòu )删除
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