delorie.com/archives/browse.cgi   search  
Mail Archives: cygwin/2001/09/19/02:31:50

Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT sources DOT redhat DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT sources DOT redhat DOT com>
List-Help: <mailto:cygwin-help AT sources DOT redhat DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-owner AT sources DOT redhat DOT com
Delivered-To: mailing list cygwin AT sources DOT redhat DOT com
Message-ID: <F536EC3453B2D411AD6100508BAF5F9901FAB3FE@bwga521a.ts.siemens.de>
From: Kandziora Jan <Jan DOT Kandziora AT ts DOT siemens DOT de>
To: "'Corinna Vinschen'" <cygwin AT cygwin DOT com>
Subject: Re: 1.3.2-1: mmap and MAP_PRIVATE|MAP_FIXED|MAP_ANON
Date: Wed, 19 Sep 2001 08:29:47 +0200
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2653.19)

>
> > You are right. But it does *not* return MAP_FAILED, it returns
0x60001000,
> > which is a valid address.
>
> Ok, I figured out what's going wrong.  A fix will be in the next
> developers snapshot.
>
For all you who are interested: I was able to walk around this problem by
using a disk file for each area and mmap that file with
MAP_PRIVATE|MAP_FIXED, avoiding MAP_ANON. The disk file must be at least as
long as requested in the following mmap call, though; But that can be done
easily by creating, lseeking, writing and immediately unlinking it from
within the program.

	Jan




--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Bug reporting:         http://cygwin.com/bugs.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019