加锁 同时队(duì )列可(kě )以无限长(zhǎng )吗 什(shí )么时候消减,同(tóng )时采(cǎi )用了弱引用避免队列(liè )过(guò )大,造成(chéng )gc压力 源码(mǎ )如下get recycle scavenge每次都是从head节(jiē )点(diǎn )获(huò )取,如(rú )果获取(qǔ )不(bú )到(dào )就next,这些(xiē )队列(liè )并不删除(chú ),jvm会自动(dòng )在内存不够的时候(hòu )删(shān )除
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