[SDL] [OT] Resource file

[Andre de Leiradella]

> [...]
>   
>> But only pages actually accessed by the application are actually
>> brought to RAM by the OS, right? Moreover, the OS will swap out
>> pages to disk if the application needs physical RAM, won't it?
>>     
> [...]
>
> Yes, but physical memory isn't the problem. The application's address 
> space is. All you have is 4 GiB of address space, some of which is 
> already reserved by the system (usually 1-2 GiB, depending on OS), 
> and the remaining 2-3 GiB is all you have left for addressing memory, 
> VRAM, memory mapped files and whatnot.
>
> Thus, in a 32 bit environment, you need to "bank switch" large files; 
> ie map only part of the file at a time.
>   
So it means I have to mmap only pieces of the file when af_entry_open is 
called...

Thanks for the info.

Cheers,

Andre
>
> //David Olofson - Programmer, Composer, Open Source Advocate
>
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