从非子进程获取退出代码 [英] Get exit code from non-child process

问题描述

我正在寻找如何从非子进程中获取退出代码.

I'm looking how I can get exit code from non-child process.

众所周知，很少有函数可以与子进程一起使用，例如wait/waitpid.使用此功能，我们可以等到子进程关闭并获得退出错误代码.但这仅适用于子进程.

As we all know there are few functions to work with child processes such as wait/waitpid. With this function we can wait until child process will be closed and get exit error code. But this works only with child processes.

实际上，我正在寻找 GetExitCodeProcess .在Windows中，我们可以通过调用 OpenProcess 打开进程，然后直接使用返回的句柄进行处理.因此，我们可以调用 GetExitCodeProcess 函数并获取状态.

Actually I'm looking for Windows analogue of GetExitCodeProcess. In Windows we can open process by calling OpenProcess and then work directly with returned handle. So we can call GetExitCodeProcess function and retrieve status.

Linux中是否有与非子进程一起使用的东西?

Is there something same in Linux for working with non-child processes?

推荐答案

没有POSIX或其他标准UNIX/Linux调用可以执行您所知道的事情，但是您可以在Linux(或其他)上完成它UNIX)使用procfs.使用procfs创新了许多非标准扩展.

There is no POSIX or otherwise standard UNIX / Linux call to do what you ask, that I know of, but you can possibly accomplish it on Linux (or other UNIX) using the procfs. Many non-standard extensions were innovated with the procfs.

如果父母尚未等待孩子，则返回码可能仍在附近.

If the parent has not yet waited on the child, the return code may still be around.

请参阅: Linux，哪里有回报系统守护程序和其他进程存储的代码?

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