加锁 同时队(duì )列(liè )可以(yǐ )无限(xiàn )长吗 什(shí )么时候消(xiāo )减,同(tóng )时采用了弱(ruò )引(yǐn )用避免(miǎn )队列过(guò )大(dà ),造(zào )成gc压力 源码(mǎ )如下(xià )get recycle scavenge每次都(dōu )是从(cóng )head节点获取(qǔ ),如(rú )果获取不到就next,这些队列并不删除,jvm会自(zì )动在内存不(bú )够的(de )时(shí )候删除
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