What is the equivalent of main() for a Service?

This is a discussion on What is the equivalent of main() for a Service? within the Windows Programming forums, part of the Platform Specific Boards category; I need to debug a service, but there's no main() function. So I'm wondering, what is the first function to ...

  1. #1
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    What is the equivalent of main() for a Service?

    I need to debug a service, but there's no main() function. So I'm wondering, what is the first function to get called when a Service starts? i.e. what's the Service equivalent of main()?

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    Thanks.
    Now, if I wanted to run this service as a regular program to make it easier to debug, could I just do this:
    Code:
    #ifdef DEBUGGING_SERVICE
       int main( int argc, char* argv[] )
    #else
       void ServiceMain( DWORD dwNumArgs, LPTSTR* lpServiceArgs )
    #endif  // DEBUGGING_SERVICE
    {
       ...
    }
    Right now I see some things like:
    Code:
    theApp.RegisterScmCtrlHandler(*lpServiceArgs, (LPHANDLER_FUNCTION)ControlHandler);
    in the ServiceMain() function. If I can rename it to main(), I'm assuming I'd have to do something else with the lines like that?

  4. #4
    Malum in se abachler's Avatar
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    Quote Originally Posted by MSDN
    ServiceMain is a placeholder for an application-defined function name.
    It can actually be anything you want. It is defined when you install the service. A given executable can have multiple services with different ServiceMain function entry points. Look for an entry like this -

    Code:
        SERVICE_TABLE_ENTRY DispatchTable[] = 
        { 
            { SVCNAME, (LPSERVICE_MAIN_FUNCTION) SvcMain }, 
            { NULL, NULL } 
        };
    Until you can build a working general purpose reprogrammable computer out of basic components from radio shack, you are not fit to call yourself a programmer in my presence. This is cwhizard, signing off.

  5. #5
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    Quote Originally Posted by abachler View Post
    It can actually be anything you want. It is defined when you install the service. A given executable can have multiple services with different ServiceMain function entry points. Look for an entry like this -

    Code:
        SERVICE_TABLE_ENTRY DispatchTable[] = 
        { 
            { SVCNAME, (LPSERVICE_MAIN_FUNCTION) SvcMain }, 
            { NULL, NULL } 
        };
    OK thanks, I found that, and the only function it lists is ServiceMain.

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