From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Preview: portable dumper Date: Mon, 28 Nov 2016 22:12:40 +0200 Message-ID: <83zikjxt1j.fsf@gnu.org> References: <047a67ec-9e29-7e4e-0fb0-24c3e59b5886@dancol.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1480363975 3712 195.159.176.226 (28 Nov 2016 20:12:55 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 28 Nov 2016 20:12:55 +0000 (UTC) Cc: emacs-devel@gnu.org To: Daniel Colascione Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Nov 28 21:12:51 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cBSIE-0000Zm-V1 for ged-emacs-devel@m.gmane.org; Mon, 28 Nov 2016 21:12:51 +0100 Original-Received: from localhost ([::1]:32832 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cBSII-0003PE-NM for ged-emacs-devel@m.gmane.org; Mon, 28 Nov 2016 15:12:54 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:38756) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cBSI8-0003O2-5H for emacs-devel@gnu.org; Mon, 28 Nov 2016 15:12:44 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cBSI5-0007lh-1C for emacs-devel@gnu.org; Mon, 28 Nov 2016 15:12:44 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:48293) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cBSI4-0007lc-VA; Mon, 28 Nov 2016 15:12:40 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3784 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1cBSI4-0007bR-C8; Mon, 28 Nov 2016 15:12:40 -0500 In-reply-to: <047a67ec-9e29-7e4e-0fb0-24c3e59b5886@dancol.org> (message from Daniel Colascione on Mon, 28 Nov 2016 11:50:31 -0800) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:209684 Archived-At: > From: Daniel Colascione > Date: Mon, 28 Nov 2016 11:50:31 -0800 > > I've been working on a portable dumper for GNU Emacs. The attached patch > is an early version of this work. I'll write up all the usual NEWS > entries, changelogs, and (in this case necessary) dedicated > documentation before I land it. I want to start getting review comments > now that the code has roughly its final shape. Thanks for your efforts, but I think this is a wrong direction, that will eventually get us into the same problem we have with unexec: the need to know and depend on intimate details of relocations, memory allocation, etc. On top of that, adding Lisp objects will now require writing its dumper back-end, so this will be a constant maintenance burden of the kind that only a few of us can bear. Making the initial load of preloaded Lisp files (most probably, a single large file) fast enough to allow us to dump the dumping phase altogether is a much more perspective direction.