From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David De La Harpe Golden Newsgroups: gmane.emacs.devel Subject: Re: bookkeeping to prepare for a 64-bit EMACS_INT on 32-bit hosts Date: Fri, 29 Apr 2011 19:50:35 +0100 Message-ID: <4DBB087B.3080004@harpegolden.net> References: <4DBA71FB.5090900@cs.ucla.edu> <83mxj97889.fsf@gnu.org> <4DBA7F87.5040609@cs.ucla.edu> <838vut6l1t.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: dough.gmane.org 1304103053 7845 80.91.229.12 (29 Apr 2011 18:50:53 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 29 Apr 2011 18:50:53 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Apr 29 20:50:49 2011 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1QFsm8-0004Bs-IC for ged-emacs-devel@m.gmane.org; Fri, 29 Apr 2011 20:50:48 +0200 Original-Received: from localhost ([::1]:54472 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QFsm7-0006PK-Q1 for ged-emacs-devel@m.gmane.org; Fri, 29 Apr 2011 14:50:47 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:38787) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QFsm4-0006Op-Ec for emacs-devel@gnu.org; Fri, 29 Apr 2011 14:50:45 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QFslz-0005Aj-1N for emacs-devel@gnu.org; Fri, 29 Apr 2011 14:50:44 -0400 Original-Received: from harpegolden.net ([65.99.215.13]:47721) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QFsly-0005Ae-Ue for emacs-devel@gnu.org; Fri, 29 Apr 2011 14:50:38 -0400 Original-Received: from [87.198.47.56] (87-198-47-56.ptr.magnet.ie [87.198.47.56]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client CN "David De La Harpe Golden", Issuer "David De La Harpe Golden Personal CA rev 3" (verified OK)) by harpegolden.net (Postfix) with ESMTPSA id 1895A683A6 for ; Fri, 29 Apr 2011 19:50:36 +0100 (IST) User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15) Gecko/20110402 Icedove/3.1.9 In-Reply-To: <838vut6l1t.fsf@gnu.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 65.99.215.13 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:138910 Archived-At: On 29/04/11 18:10, Eli Zaretskii wrote: >> From: Stefan Monnier >> Cc: Eli Zaretskii, emacs-devel@gnu.org >> Date: Fri, 29 Apr 2011 13:04:07 -0300 >> >> Let me first say that I'm not terribly excited by this idea of >> a 32+64bit compilation option: ignoring the fact that many 32bit OSes do >> not provide a full 4GB virtual address space to the Emacs process, such >> a change can only bump the limit from 512MB to less than 4GB. >> Of course, it will satisfy some particular uses, but it won't remove the >> fundamental problem. > > Well, I beg to differ: I think an eight-fold increase in the size of > files we can visit on a 32-bit system _is_ a big deal. Meh. IMO the aim should be proper lispy bignums. GNU does already have a C bignum (and other stuff) library (GMP) [1] that emacs could link against, after all! I think Paul's changes may help somewhat with that goal anyway (emacs integers would be further divorced from C ints), just saying. [1] http://gmplib.org/