加锁 同时队列可以无(wú )限长吗 什么时候(hòu )消(xiāo )减,同时采(cǎi )用了(le )弱引用避免队列过(guò )大,造(zào )成(chéng )gc压力 源(yuán )码(mǎ )如下get recycle scavenge每次(cì )都(dōu )是(shì )从head节点获(huò )取,如(rú )果(guǒ )获(huò )取不(bú )到(dào )就next,这些队(duì )列并不删(shān )除,jvm会自(zì )动(dòng )在内存不够的时候删除(chú )
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