加锁 同时队列可(kě )以无限长(zhǎng )吗 什(shí )么时候消(xiāo )减,同(tóng )时采用了弱引用避免队列(liè )过(guò )大(dà ),造成gc压力(lì ) 源码(mǎ )如下(xià )get recycle scavenge每次(cì )都是从head节(jiē )点(diǎn )获(huò )取,如果(guǒ )获(huò )取(qǔ )不到(dào )就next,这些队列并(bìng )不删除,jvm会(huì )自动在内存(cún )不够的(de )时(shí )候删除(chú )
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