Re: Application "Nuked"

Hi Kristofer,

We're having some trouble with a Delphi 6 app that sometimes just disappears without a trace. It happens within a timespan of typically 30 to 60 hours of continuous uptime. It's a heavily multithreaded system, but all threads are internally exception-safed (basically, a catch-all try-except block in the TThread.Execute method, which should report the occurrence and nature of any exception to a log file), so I'm rather at a loss to explain why we cannot see any kind of error message at all. We use no third party components or DLL's.

I'm wondering whether there's a knowledge base somewhere specifically oriented toward grave application crash symptoms and their causes. Or if you have experienced a similar situation and found the cause, it would be helpful if you would share your story for me and others to possibly learn from.

About one year ago (when I got my new PC with a P4 HT) I found that one of my threaded applications would sometimes just disappear without any trace. Delphi-2005 does that too (and probably many other apps).

Here is a blog that I think describes the main problem (found using this google search: IsBadReadPtr "stack guard page"):
http://blogs.msdn.com/larryosterman/archive/2004/05/18/134471.aspx

Look at the last several comment entries as they specifically discuss how this problem occurs: "hit the guard page twice in a row"

Anyway, in my program I had a string that needed a critical section around it. Hopefully your problem will have an easy fix too!

--
Regards,
Paul Breneman
http://www.TurboControl.com
http://www.turbocontrol.com/TPSupport.htm - TurboPower support links
.

Relevant Pages

  • Application "Nuked"
    ... We're having some trouble with a Delphi 6 app that sometimes just disappears ... without a trace. ... It happens within a timespan of typically 30 to 60 hours of ...
    (borland.public.delphi.non-technical)
  • Re: Application "Nuked"
    ... > We're having some trouble with a Delphi 6 app that sometimes just ... > disappears without a trace. ... It happens within a timespan of typically ...
    (borland.public.delphi.non-technical)
  • Re: Application "Nuked"
    ... >We're having some trouble with a Delphi 6 app that sometimes just disappears ... >without a trace. ... It happens within a timespan of typically 30 to 60 hours of ...
    (borland.public.delphi.non-technical)