From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Native compilation: the bird-eye view Date: Sun, 23 Aug 2020 11:37:37 -0400 Message-ID: References: <83o8qocd32.fsf@gnu.org> <83ftbzdewp.fsf@gnu.org> <83blmndbpo.fsf@gnu.org> <838shrdb1c.fsf@gnu.org> <837dxbd93b.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="36688"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: Eli Zaretskii , Paul Eggert , "Andrea Corallo via Emacs development discussions." To: Andrea Corallo Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Aug 23 17:38:16 2020 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1k9s4V-0009Qf-KL for ged-emacs-devel@m.gmane-mx.org; Sun, 23 Aug 2020 17:38:15 +0200 Original-Received: from localhost ([::1]:60464 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k9s4U-000236-Ls for ged-emacs-devel@m.gmane-mx.org; Sun, 23 Aug 2020 11:38:14 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57342) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k9s3z-0001cM-GC for emacs-devel@gnu.org; Sun, 23 Aug 2020 11:37:43 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:41015) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k9s3x-00040J-EP; Sun, 23 Aug 2020 11:37:42 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 2814F440721; Sun, 23 Aug 2020 11:37:40 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id B220544071C; Sun, 23 Aug 2020 11:37:38 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1598197058; bh=9/mObIKnpU7RCDvMR6Z9M0UvLiqmCcsCREGDO+0D+d4=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=LuX7KUWlzlmd8B1BJr49crYfQ4xFviYjAjSHn/RV0o1GWnaz830lzMuDNDK4VwdSj +i0re2x1kaG/DC9J3/XVK61uB6wBM6Y4+tYlzir2VNvpGA7EpiTE9Ny01cggNe2niH nCBtVKqZaZqpY7oqgE2EdNk0mHFw33n2KzyFql9Li41fBfVObrxoAYQkkmlsRSB21s TJZDHIhOao5u4dMg1SJTM55p8bNVP3g8gM4dN991vKuu2LezW/2GyRCuW+1lvwac3t krOmPYB0qnCAE4vSD+80A5j3VmyvRqcUKD29moUtfyBHrENwWb/v3eBdPaAVAjdLhh FCKsDCG/D1opg== Original-Received: from ceviche (unknown [45.72.246.108]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 6EED5120642; Sun, 23 Aug 2020 11:37:38 -0400 (EDT) In-Reply-To: (Andrea Corallo's message of "Sun, 23 Aug 2020 12:19:27 +0000") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/23 11:15:57 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:254142 Archived-At: > I've updated how we generate the eln filenames and now they are in the > form: filename-path_hash-content_hash.eln > > where path_hash is computed using the absoulte path of the source file > and content_hash using its content. [ Note: it's not a "path" but a "file name", according the GNU's conventions. ] Hmm... this results in too-long file names IMO, and the absolute file name can change "gratuitously", making those eln files suddenly unusable. > This should enable us for keepeng the eln-cache folders clean and solve > the issue mentioned in my previous message. I don't have a clear understanding of the problem this is trying to solve. Could you summarize it? If you're worried about how to delete old .eln files, I think there are two problems: identifying which .elc files still exist and identifying which Emacs binaries still exist. But the first problem can arguably be solved by scanning the `load-path`, collecting the .elc files we find there (and kind of GC algorithm where `load-path` acts as the roots). Stefan