Debuggers, how to use?

This is a discussion on Debuggers, how to use? within the A Brief History of Cprogramming.com forums, part of the Community Boards category; Hmm thanks for the basic information, maybe i'll research it someday, right now i'm getting ready to really buckle down ...

  1. #16
    RoD
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    Hmm thanks for the basic information, maybe i'll research it someday, right now i'm getting ready to really buckle down into opengl programming.

  2. #17
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    If your embedded target is running Windows CE, you can connect to the target using Platform Builder, and run the application in the target through the Embedded VC++ debugger, takes a bit of fiddling to get it working, but once it is, it is just like debugging a local application.
    I've seen Windows CE in action and it looks quite good, but we're using OS9000 and having to deal with a device consisting of a number of subdevices which each have their own processor. We're using an I2C tracer and terminal to do debugging in some way, but unfortenately we can't do things like single stepping and that sort of usefull things.

    One thread might be reading an array whilst another writes to it and that sort of thing.
    Such can usually be solved using semaphores, but also semaphores can lead to problems if they're not applied correctly. An even more harder to debug problem with multithreading is timing.

  3. #18
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    ok, we are totallyoff-topic here.

    i cant use MSVC++, as much as i want to, i cant, my comp is too slow and too small
    heres my comp stats:
    Speed: 200mgz
    Space: 2GB
    Space left: 400MB

    and thats it. i cant have MSVC++ on there becuase it takes like, 400MB.

    once i get winXP with my new comp, ill get it ASAP, but i still think BSDC++ is still an awsome beginners compiler.

    there are a few things that bug me with MSVC++, the fact that when i compile a project, it gives me the total errors, and doesn;t tell me what lines or problems it has come up with. (maybe it does but i cant find it) and BSDC++ does, immediatly.

    as for a debugger, i still have no clue how to use it, how many people here have BSDC++?
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  4. #19
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    >>there are a few things that bug me with MSVC++, the fact that when i compile a project, it gives me the total errors, and doesn;t tell me what lines or problems it has come up with.<<

    You sure? Mine does

  5. #20
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    enlarge your error window or scroll up in it, the errors are listed you just don't see them cuz the window is too small and u see the end of the compile attempt.

    Double click an error and it takes u right to it.

  6. #21
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    same thing with bloodshed, except it actually shows you without attempting to hide it then.

    anyway, this still doesn;t help me with any debuggers!
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  7. #22
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    ok, if you want to use a debugger and get the most out of it you need to learn assembly. Otherwise it's pretty much pointless, even if you were able to use msvc. That's about all the advice I can give you, other than learning what some of the error codes mean (pBlock->inUse usually means you deleted something without using new ) Good luck.
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  8. #23
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    why would i need to learn another language...just to use a debugger! thats plain retarded!
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  9. #24
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    >>ok, if you want to use a debugger and get the most out of it you need to learn assembly. Otherwise it's pretty much pointless, even if you were able to use msvc

    No its not.


    You can still watch the contents of variables, how if / switch statements ect are executing or where values are changing. You can use conditional break points, the call stack and a whole range of other tools.
    I use it every time I have a bug.

    Sounds like you just don't know how to use one Waldo2k2.

    Else use MessageBox'es and GetLastError() to tell you when things go wrong.

    Code:
    if(!Win32_Function_Returns_Success())
    {
         iError=GetLastError();
         sprintf(sBuffer," Win32_Function_Returns_Success in One_Of_My_Functions failed with error#%d.",iError);
          MessageBox(hWnd,sBuffer, "App Error",MB_ICONERROR);
          return FALSE;
    }
    To learn, just put a break point at the begining of your app and then use the 'step' (F10 in MSVC) to move on one line at a time.
    "Man alone suffers so excruciatingly in the world that he was compelled to invent laughter."
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  10. #25
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    http://www.gnu.org/manual/gdb-4.17/gdb.html
    You can also get information when inside gdb by help.
    Useful commands are step, break, up, print, next, list.

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