Multi thread help!!!!!!!!!!

[ceodav]

hi anybody,
i really need help to solve a little proble with my multi thread application.....
I'm using afxbeginthread (visual c++ )to process a simple loop in background. The sintax is ok, but when i lounch the exe file i got an acces memory violation.
why??????
i'm not able going through......
anybody could help me?

thanks.
bye

 

[Guest_imported]

you know that's really difficult to answer. There could be a limitless amount of reasons for this happening, like:

1. Pointing to memory that doesn't exist or is not committed

2. In some way (read, write, execute) non-existant memory address

3. Attempting to access protected memory space

If your thread code is "okay" as you say, then I'd suggest tracing your code one line at a time and see exactly WHERE the access violation is occuring. Have you tried running the thread code on its own (ie. not via a spawned thread)?

As a side note, why not use _beginthreadex() to start your threads?


flipcode

 

[ceodav]

Thank you for your answer.

unfortunately I cannot trace the code step by step because when i start the debug i got the access violation in mfc42d.dll. This happens before the compiler enters in main subroutine!!!!! This really strange.

I'll try with _beginthreadex as you suggest, but i'm working with cpp files, not c therefore i think there will be some problems.....

anyway..thank you very much.

ceodav

 

[IonelBurtan]

If you do not have any service pack installed you can get some strange ms bugs error. I sugest you install at least SP3 for Visual Studio although SP5 is available at Microsft's site.

(Note:if your error happens in CHtmlView class, that is a sure sign of MS bug that is fixed by service packs)

HTH, s-)

Blessed is he who in the name of justice and goodwill, sheperds the weak through the valley of darkness...

http://www20.brinkster.com/ionelb