有关如何使监视程序了解并处理其中一个病房的退出代码的设计思想

Question

In my project, I have a several applications running.

One of them is a 'watchdog' application - an application that checks every time interval in an infinite loop weather the other applications (wards) are still running. In case a ward is no longer running - the watchdog restarts it.

I now want to extend functionality of the watchdog so that he will somehow become aware not only if a program stops running, but what exit code it returned when it did, and then act according to exit code.

Answer 1

You should already be checking whether the ward has terminated with a wait function like WaitForMultipleObjects , called on a handle to the ward process (which you acquired via CreateProcess or OpenProcess ). Once you've detected a terminated process, pass that same process handle to GetExitCodeProcess and it will tell you the exit code.