加锁 同时队(duì )列可以(yǐ )无(wú )限长吗 什(shí )么时(shí )候消(xiāo )减,同时采用(yòng )了(le )弱引(yǐn )用(yòng )避免队列过大(dà ),造成gc压(yā )力 源码如下(xià )get recycle scavenge每(měi )次都(dōu )是从head节(jiē )点获取,如(rú )果获取(qǔ )不到就next,这些(xiē )队列并(bìng )不删除,jvm会自动(dòng )在(zài )内(nèi )存不够的时候删除
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