How to handle exception in .net Process() while executing the another console in it

Question

I am executing one .net console from another console App. Eg MyTool.exe < input.txt

Where Input.txt will have all the input required by tool.

The input in the input file should be dyanmic, so to achive this.

I created another wrapper console App MyWrapper.exe. This is first crating the input.txt file and then calling the MyTool.exe using .Net Process().

Content of batch file

MyTool.exe < input.txt

var proc = new Process();
proc.StartInfo.FileName = "MyBatchFIle.bat";
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.RedirectStandardOutput = true;
proc.Start();

Now here is the question. Say in case of error or incorrect input, there is possibility that MyTool.exe can go to infinite loop.

So I want to detect this kind of error and stop the execution.

My plan is to execute the MyWrapper.exe from Windows scheduler.

Thanks, Siraj

_there is possibility that MyTool.exe can go to infinite loop_ in which world you would not prevent something like this? — Federico Dipuma, May 31 '16 at 19:45

score 0 · Answer 1 · edited May 23 '17 at 11:58

You could wait for the process to finish + Timeout. If the process did not finished within the timeout, you can kill it:

if(!proc.WaitForExit(timeout))
{ 
    proc.Kill();
}

Another option is to communicate with the process via IPC (e.g. named pipes). But that requires the extension of both tools and increases complexity.

A third option is to communicate via files. For instance: having a status file that can be written by 'MyTool.exe' in format similar to "[process_ID] status". Then the wrapper could read that infomation periodically and kill the process, restart it or whatever is needed.

How to handle exception in .net Process() while executing the another console in it

Content of batch file

1 Answers1