当节点进程被杀死时，杀死所有child_process

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问题描述

当父进程被杀死时，我如何确保所有child_process被杀死。
我有类似下面的东西。

How do i make sure all child_process are killed when the parent process is killed.I have something like the below one.

即使节点进程被杀死，我也看到FFMPEG继续运行并生成了out.avi。节点进程退出后，如何停止FFMPEG的运行。

Even when the node process is kill i see that FFMPEG continues to run and the out.avi is generated. How can i stop FFMPEG from running after the node process exits.

var args = "ffmpeg -i in.avi out.avi"
child_process.exec(args , function(err, stdout,stderr){});

child_process.exec(args , function(err, stdout,stderr){});

推荐答案

您需要侦听进程退出事件并杀死然后子进程处理。这应该对您有用：

You need to listen for the process exit event and kill the child processes then. This should work for you:

var args = "ffmpeg -i in.avi out.avi"
var a = child_process.exec(args , function(err, stdout,stderr){});

var b = child_process.exec(args , function(err, stdout,stderr){});

process.on('exit', function () {
    a.kill();
    b.kill();
});

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