Subj : Re: CRT _beginthread returns -1, errno=ENOMEM "Not enough space" on 3GB dualcpu
To   : comp.programming.threads,comp.os.ms-windows.programmer.nt.kernel-mode,microsoft.public.vc.language
From : lpdcunha
Date : Thu Mar 31 2005 01:45 pm

<snip>

> >_beginthread() returns (-1L). I have this:
> >
> > thr = _beginthread( (void (*)(void *) )f, stk_size, (void *)arg );
> >
> >Error code I get is: 
> >  1) errno = 12, ENOMEM "Not enough space"
> >  2) GetLastError() returns 8, ERROR_NOT_ENOUGH_MEMORY  
> >     "Not enough storage is available to process this command."
> >
> > stk_size passed in 32768 for both threads.
> 
> MSDN mentions that any thread using the C runtime requires at least a
> 64KB stack. I think this is a more likely problem in your case than
> running out of virtual address space, which you can check using
> Process Explorer from http://www.sysinternals.com, or the memory tools
> available from http://www.softwareverify.com.
 
Thanks but I could not find the docs describing this limitation. I'll keep looking. 

 
> >p.s.  Aside: I had some CRT-debug problems. I linked msvcrtd.dll
> >debug-multithreaded CRT into the app. But I could not successfully
> >step into the code for _beginthread() in thread.c CRT-source file. The
> >symbols were not found (even though I have msvcrtd.pdb in the path)
> >These files are all in my VC98 subdirectories. Oh well.
> 
> Look up the MS symbol server in MSDN. It will keep your symbols
> up-to-date for all your system DLLs. You set your symbol path to a
> special string which downloads symbols for system DLLs automatically
> as needed, and updates them after service packs, updates, patches,
> etc.

Ok, I'll give this a try. Am downloading the symbols package now.
Thanks,
Larry

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