CODEWITHSUNDEEP
c#windows
Rubinsh
Rubinsh

Reputation: 4983

Detecting process crash in .NET

Is there a way to determine that a process that my program started has crashed? Currently, the solution I found is to look at Process.ExitCode and examine the value:

        this.STProcess = Process.Start(this.CreateProcessStartInfo());
        this.STProcess.WaitForExit();
        if (STProcess.ExitCode != 0)
        {
            //raise error event...
        }

I wanted to know if there is a more elegant (and accurate) way of doing this?

I would prefer answers in C# and using P/Invoke is fine as well.

P.S - I need to work on windows XP/Vista/7

Upvotes: 6

Views: 11675

Answers (3)

mrranstrom
mrranstrom

Reputation: 228

When a process crashes, Windows first checks to see if a Just-In-Time debugger is configured on your system. If so, you can have that debugger attach itself to the process right before it crashes. Usually you would use this functionality to generate a memory dump as a process crashes. Whatever debugger you attach gets to know the PID and name of the crashing process. You can either utilize features of existing debugging tools, such as ADPlus, or write your own program and tell Windows that that is your Just-In-Time debugger and should be run when a process crashes. I believe you can set up a JIT debugger specifically for any process name.

See http://msdn.microsoft.com/en-us/library/5hs4b7a6(v=VS.80).aspx

I think that if you set the HKLM\Software\Microsoft\Windows NT\Current Version\AeDebug\Debugger registry entry to '"DirectoryOfYourProgram\YourProgram.exe" -p %ld' where YourProgram.exe expects a PID passed in with the -p flag, your program will be called and passed the correct PID when a process crashes.

Upvotes: 2

Benjamin Podszun
Benjamin Podszun

Reputation: 9827

No.

Unless you can influence the process in some way (writing errors to the Eventlog? A file) you have no external way to know that a process crashed, as far as I know. For you it's just a process that went away. Not even Windows is going to keep this information anywhere I know. It doesn't exist anymore and unless the process somehow kept the details, they are gone.

Upvotes: 5

Igor
Igor

Reputation: 316

For Windows 7, there is Application Restart and Recovery API. For .NET you can use Windows API Code Pack.

Generaly, you can periodically search for process existence (watchdog application).

Upvotes: 2

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