加锁 同(tóng )时队(duì )列可以(yǐ )无(wú )限长吗 什(shí )么时候消(xiāo )减,同时采(cǎi )用了(le )弱引(yǐn )用避免队列(liè )过大,造成(chéng )gc压力(lì ) 源(yuán )码如下get recycle scavenge每(měi )次(cì )都是从head节点获取,如果获取(qǔ )不(bú )到(dào )就next,这些队(duì )列并(bìng )不删除,jvm会自(zì )动(dòng )在内存不够(gòu )的时(shí )候删除
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