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Re: Looking for something to work on...
- To: Robert Collins <robert dot collins at itdomain dot com dot au>
- Subject: Re: Looking for something to work on...
- From: Christopher Faylor <cgf at redhat dot com>
- Date: Mon, 23 Apr 2001 20:31:41 -0400
- Cc: John Fortin <fortinj at attglobal dot net>, cygwin-developers at cygwin dot com
- References: <EA18B9FA0FE4194AA2B4CDB91F73C0EF79C7@itdomain002.itdomain.net.au>
- Reply-To: cygwin-developers at cygwin dot com
On Tue, Apr 24, 2001 at 10:20:10AM +1000, Robert Collins wrote:
>> I guess we should move this discussion to cygwin-developers...
>>
>> John was asking for something interesting to do. He suggested POSIX
>> IPC stuff, which I (possibly erroneously) assumed was the same as what
>> cygipc provided.
>
>It is. See http://www.opengroup.org/onlinepubs/7908799/xsh/ipc.html -
>it's essential sysV IPC. To some extent these are equivalent to mmap and
>the like, but I don't think mmap is cross process-persistent in cygwin
>(And I don't know if it's meant to be). We could of course implement shm
>with disk backing not VM backing, but that might cause issues with Gb
>allocs :]
I could actually donate some Windows code that I wrote a few years ago
to emulate sys v semaphores. It wasn't complete but it might be useful
as either a starting point or a laughing point.
cgf