From: shane AT caraveo DOT com (Shane Caraveo)
Subject: RE: mmap() support W95/NT in b18
23 Jan 1998 19:22:02 -0800
Message-ID: <199801221732.MAA03815.cygnus.gnu-win32@michael.webdevelop.com>
References: <199801201105 DOT NAA22856 AT umail DOT lmf DOT ericsson DOT se>
Reply-To: <shane AT caraveo DOT com>
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To: <gnu-win32 AT cygnus DOT com>

I have seen an implementation of mmap() for win95/nt in a msql port that was
done for msvc.  I dont know if it could be compiled with cygnus, but it may
be worth looking at.  You can find that msql port through:
http://www.blnet.com/msqlpc

They have two different ports listed, one for cygnus, and one for msvc.  The
mmap port I saw was in the msvc version, but there may be info on porting
mmap in the pages about the cygnus port.

Shane

> I'm trying to port some SW that uses mmap() extensively. The FAQ for
> b18 says the system call on Windows95 is a dummy. But how about
> WindowsNT, is it supposed to work?
>
> Specifically, the program fails on the following system call:
>
> heap = mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
>             -1, 0);
>
> On Win95, it fails with errno=22 (Invalid argument).
>
> On WindowsNT (3.51), it fails with errno=13 (Permission denied).
>
> The question is
> - Is it supposed to work on any platform?
> - How about the coolview package, any improvement expected there?
> - If not, is there a chance it will be supported in a future version?
>
>
> -
> For help on using this list (especially unsubscribing), send a message to
> "gnu-win32-request AT cygnus DOT com" with one line of text: "help".
>
>

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