From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: =?utf-8?Q?Gerd_M=C3=B6llmann?= Newsgroups: gmane.emacs.devel Subject: Re: Collecting markers with MPS Date: Wed, 24 Apr 2024 18:50:41 +0200 Message-ID: References: <87cyqfjk6n.fsf@gmail.com> <86sezb2oj2.fsf@gnu.org> <874jbrjg04.fsf@gmail.com> <86o79z2h7y.fsf@gnu.org> <87wmomiz0x.fsf@gmail.com> <86bk5y3gf4.fsf@gnu.org> <87jzkmivel.fsf@gmail.com> <867cgm3exf.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="18180"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Helmut Eller , emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Apr 24 18:51:30 2024 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 1rzfqC-0004V0-IH for ged-emacs-devel@m.gmane-mx.org; Wed, 24 Apr 2024 18:51:28 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rzfpj-0005SZ-H2; Wed, 24 Apr 2024 12:50:59 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rzfpb-0005Pl-Pl for emacs-devel@gnu.org; Wed, 24 Apr 2024 12:50:54 -0400 Original-Received: from mail-ej1-x62c.google.com ([2a00:1450:4864:20::62c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rzfpW-0001mn-AU; Wed, 24 Apr 2024 12:50:49 -0400 Original-Received: by mail-ej1-x62c.google.com with SMTP id a640c23a62f3a-a55911bff66so10428366b.0; Wed, 24 Apr 2024 09:50:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1713977443; x=1714582243; darn=gnu.org; h=mime-version:user-agent:message-id:date:references:in-reply-to :subject:cc:to:from:from:to:cc:subject:date:message-id:reply-to; bh=ZGHY1j4xGL3q9X73w7F/b8kmphhshbrvJS7SkCWBRQM=; b=AchaUjrpWU9+deVxvDQKcBtHD3iFRjSl/NrudeunnVFXKavzBvSE3gqJWzCbN8Z3eH hrlhevyKbhigPt2pl4MqU06vWu/waABqxVWl7yYRZ2VVDMnEjPSj1Q4v5XSXvCf/fEMF bCBOmElwPwB9XGMugg2OBdFU7v6gQ/SVG6xRDiqjpTuizQ4ppXTv1e35w9ImFUisr7Tc fUSPYLaKtp9EoRaXA2wOckCB6hjfPve0iEi0O5haMCNl3jAIE+y6EhjAnqqHjIDGMipK u1XkAYurZJtWdj6icF/N8SWQUjyC4IlS+gZtPW3iDjAjgrOrfgosTGlO5I0cNi7bRdBI 7htw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713977443; x=1714582243; h=mime-version:user-agent:message-id:date:references:in-reply-to :subject:cc:to:from:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=ZGHY1j4xGL3q9X73w7F/b8kmphhshbrvJS7SkCWBRQM=; b=aNaRLAfDqMJSZz7SYTmZ0A4DxCAqY8TuwXWY+pDICRZc+qZmnYOUIzkVNVbUNbftxX aIOKS7PirYa9TPcYziL3k555lC35QcHqp7LpuAzX1rTaL6fIYTJh3ntdIx/dQMCqj5oE ywynv/x2Jh7OIK85kAZHMSWHSdM9qRcOhgo3xsSWhtmBUKTG2qXUOSB3TCA84GoYLmGf UrpHqTK2KT1Ek1FFqI4c5LfVEyDAvr5/YhUQ2eJQz5zP9eTdOpRLSgX6lcOwBiZLnhuh jhazVcDHL5W+FrE/U/SIanM/9A/3AMq6mwn3qXk8efCf0Bb/eK5F4g0eqa5/iuXFlf6Q vobg== X-Forwarded-Encrypted: i=1; AJvYcCULDVSKlkdSGA6b5LQ/K1/irmJIWY5so4LOO7kzuzO/are22shNnK64Vt1ja+4EEk+eeCe6OXgF2pPlfGOqDQhvu3u1 X-Gm-Message-State: AOJu0YwXGtSd5LnLMjDc9ZtZ/2yJ6Xz9u9fvSSWC3hflBfWGuV5Fe6VW q/VHhmBnpDOtBficlrle79lvX0+qR6pYqNfuD1qtuL6PQqViovnuqDw5m0QT X-Google-Smtp-Source: AGHT+IHMHOdmcKTvJEfLptPAxPL1YTL+XIePCu6nr9WCeLZ0FvZ7AnrFg9mI6Adsy8qazbpeBx1M7w== X-Received: by 2002:a17:906:7742:b0:a55:be6d:b9f8 with SMTP id o2-20020a170906774200b00a55be6db9f8mr2046798ejn.10.1713977442996; Wed, 24 Apr 2024 09:50:42 -0700 (PDT) Original-Received: from pro2.fritz.box (p4fe3abb0.dip0.t-ipconnect.de. [79.227.171.176]) by smtp.gmail.com with ESMTPSA id n4-20020a170906164400b00a55967a9038sm6113963ejd.95.2024.04.24.09.50.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Apr 2024 09:50:42 -0700 (PDT) In-Reply-To: <867cgm3exf.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 24 Apr 2024 19:26:20 +0300") Received-SPF: pass client-ip=2a00:1450:4864:20::62c; envelope-from=gerd.moellmann@gmail.com; helo=mail-ej1-x62c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:318039 Archived-At: Eli Zaretskii writes: >> Yes, but only the programmers know which markers they no longer need. > > Sorry, I don't follow: how does the old GC detect dead markers? Why > cannot a function we write do the same? IIRC, the existing GC doesn't process the lists until all other marking has been done. If a marker is not GC-marked then, we know that there are no references than from the lists.