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yantzu avatar yantzu commented on July 23, 2024

在程序直接调用System.exit()退出的时候,会调用metaq注册的shutdownhook,shutdownhook会调用SimpleFetchManager.stopFetchRunner()方法, 这个方法会判断条件this.requestQueue.size() < this.fetchRequestCount, 如果满足就会进入一个循环不停的等待。这个条件的退出,依赖于fetch线程退出,将requestQueue加回,但是此时fetch线程正好执行到代码SelectorManager.awaitReady()方法,SelectorManager此时已经被执行stop(), 所以条件一直被满足,进入一个死循环。结果就是fetch线程不退出,而shutdownhook等待fetch线程退出,jvm等待shutdownhook退出

from metamorphosis.

yantzu avatar yantzu commented on July 23, 2024

提交了一个gecko的PR,killme2008/gecko#5

from metamorphosis.

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