加(jiā )锁 同(tóng )时队列(liè )可(kě )以无限长吗 什么时候消(xiāo )减(jiǎn ),同时采(cǎi )用了弱(ruò )引用(yòng )避(bì )免队(duì )列(liè )过大,造成gc压力 源码如(rú )下(xià )get recycle scavenge每次都(dōu )是从head节(jiē )点获取(qǔ ),如果获(huò )取(qǔ )不到就next,这些队列并不删(shān )除(chú ),jvm会(huì )自动在内存(cún )不够的时候删除
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