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 : Alexander Grigoriev
Date : Fri Apr 01 2005 06:35 am

Though it's probably unrelated to your problem, casting function pointers is 
a bad thing. You have too many chances to screw up the calling conventions.

don't also use _beginthread, use _beginthreadex instead. The former is 
braindead. It returns a handle, but you cannot really use it, because it may 
become invalid at any moment.

"Larry D'Cunha" <lpdcunha@engmail.uwaterloo.ca> wrote in message 
news:456de2c6.0503302150.5348483a@posting.google.com...
>I need some help debugging a program that is hanging because of a
> thread problem with _beginthread() multithreaded C-runtime call. I'm
> using VS6 debugger to step into the code.
>
> System: Xeon 3.2GHz, dual cpu, 3.2GB RAM
>
> Problem:
> Two threads are being created. First one created ok. Second one fails.
> _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.
>
>
> I found one post out there with the exact same problem I have.
> http://groups.google.ca/groups?hl=en&lr=&th=4770efc299759096&seekm=1998Jun10.061451.8665%40cmkrnl&frame=off
>
> It mentions that the problem could be: Running out of virtual address
> space. I'm not familiar with this area, but I dont know why this is a
> problem on a 3GB dual cpu machine. Something wrong with the 3GB
> addressability?
>
> Any help appreciated.
>
> Thanks,
> Larry
>
> 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.

.