Re: [B2-devel] Re: Memory mapping

[Christian B. <cb...@st...>]

Hi!

On Wed, May 23, 2001 at 10:41:45AM +1000, ni...@in... wrote:
> 	Sure. What I actually meant was, what is this mmap() doing:
> 
> RAMBaseHost = (uint8 *)mmap(0, mapped_ram_rom_size,
>                             PROT_READ | PROT_WRITE,
> 			    MAP_PRIVATE, zero_fd, 0);
> 
> 	So, how is this really any different to:
> 
> RAMBaseHost = (uint8 *)malloc(mapped_ram_rom_size);

Hm, at first glance I can't see the reason. It looks like gbeauchesne wrote
that part (rev. 1.19 vs. 1.20 of that file); maybe he knows. Perhaps it
simplifies some things by just having to munmap() the area when quitting
istead of either munmap() or free()?

Bye,
Christian

-- 
  / Coding on PowerPC and proud of it
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