加(jiā )锁 同(tóng )时队列可以(yǐ )无限长吗 什么时候消减,同(tóng )时(shí )采用了弱(ruò )引用避(bì )免队列(liè )过(guò )大,造成gc压力 源码(mǎ )如(rú )下(xià )get recycle scavenge每次都是从(cóng )head节点(diǎn )获取(qǔ ),如(rú )果(guǒ )获取(qǔ )不到就next,这些队列并不(bú )删(shān )除,jvm会(huì )自动在内存不够(gòu )的时候(hòu )删除
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