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From: "Artur Pendzich" <apendzich AT wytnijplusnet DOT pl>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: unload_datafile()
Date: Wed, 22 Sep 2004 13:28:10 +0200
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Dnia Wed, 22 Sep 2004 11:02:26 +0200, Artur Pendzich  
<apendzich AT wytnijplusnet DOT pl> napisał:

> HI!
>
> I have problem with freeing memory in my program.
>
> This is a piece of my programm.
>
> void unload_all(void)
> {
>    unload_datafile(datafile)
>    if (game1)
>    {
>       free(cards);
>       free(table);
>       unload_datafile(wondata);
>       destroy_bitmap(bmp1);
>       destroy_bitmap(bmp2);
>    }
>    else
>    {
>       unload_datafile(supdata);
>       destroy_bitmap(belt1);
>       destroy_bitmap(belt2);
>    }
>    destroy_bitmap(bmp_auto);
> }
> (...)
>
> int client_reaction(void)
> {
>   ...
>   switch(a)
> {
>      ...
>      case KEY_Z:
>       {
>              physmem1 = _go32_dpmi_remaining_physical_memory();
>              virtmem1 = _go32_dpmi_remaining_virtual_memory();
>              unload_all();
>              physmem2 = _go32_dpmi_remaining_physical_memory();
>              virtmem2 = _go32_dpmi_remaining_virtual_memory();
>       }
> ...
> }
>
> After calling function unload_all() variables physmemx and virtmemx  
> shows that there is the same amount of reamining memory. Why?


ok, I have red djgpp faq (15.2) and I know why _go32_dpmi_remain...
indicates the same values, but..
> I load several datafiles, create some bitmaps and then unload them from  
> memory using unload_all. After it I load next set of datafiles and   
> bitmaps and once again unload them.
> After several loops I have not enought memory to load datafile and in  
> finction  load_datafile() program freezes.
system doesn't see freed memory but cwsdpmi should see it. So why program  
hangs after several load-unload sequences in load_datafile function?


One more problem:
even after reeboot go32_v2 answers : descriptors exhausted.
Do someone knows why?

Thanks
Artur Pendzich