终止由* nix上的ProcessBuilder生成的子进程 [英] Terminate child processes spawned by a ProcessBuilder on *nix

问题描述

我正在从java程序执行shell管道 - 它将类似于

I'm executing a shell pipeline from a java program - it'll be something like

ProcessBuilder builder = new ProcessBuilder(
                         "sh", "-c", "program1 | program2 | program3");
builder.start();

在某些情况下，可能需要终止此单元。但是

In some cases this unit might need to be terminated. However

process.destroy();

只会销毁sh命令。 pipline中的命令将被孤立并由init进程采用。

Will only destroy the "sh" command. The commands in the pipline will be orphaned and adopted by the init process.

有没有办法轻松终止所有这些子进程 - 或执行如上所述的管道一种使它更容易终止的方法。改变程序1/2/3无法完成。超出linux的可移植性不是问题。

Is there any way to easily terminate all these child processes - or execute a pipeline like the above in a way that makes it easier to terminate them . Altering progam 1/2/3 can't be done. Portability beyond linux is not a issue.

推荐答案

我有两种方法可以做到这一点：

There's two ways I can think to do this:

1. 你可以运行一个pkill program1 program2 program3

1. You could run a pkill program1 program2 program3

你可以编写一个中级程序启动整个bash命令行，这个中间程序会安装一个信号处理程序，当它收到STOP信号时会杀死它自己的孩子。

You could write a intermediate program which launches the whole bash command line, this intermediate program would install a signal handler which kills it's own children when it gets a STOP signal.

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