加锁 同时(shí )队列可(kě )以(yǐ )无限长吗 什(shí )么时候消(xiāo )减(jiǎn ),同(tóng )时采用了弱引(yǐn )用避免队列(liè )过(guò )大,造成gc压(yā )力 源(yuán )码(mǎ )如(rú )下(xià )get recycle scavenge每次都是从head节点(diǎn )获(huò )取,如(rú )果获取不(bú )到就next,这(zhè )些队(duì )列并(bìng )不删除,jvm会自(zì )动在内存不够的时候删(shān )除
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