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: Some experience with the igc branch Date: Wed, 25 Dec 2024 16:02:47 +0100 Message-ID: References: <87o713wwsi.fsf@telefonica.net> <87ttaucub8.fsf@protonmail.com> <87pllicrpi.fsf@protonmail.com> <864j2u442i.fsf@gnu.org> <87ldw6as5f.fsf@protonmail.com> <86o7112rnq.fsf@gnu.org> <867c7p2nz4.fsf@gnu.org> <861pxx2lh7.fsf@gnu.org> <86ldw40xbo.fsf@gnu.org> <86a5cj2a0e.fsf@gnu.org> <867c7n28sf.fsf@gnu.org> <877c7n962e.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3486"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Eli Zaretskii , pipcet@protonmail.com, ofv@wanadoo.es, emacs-devel@gnu.org, acorallo@gnu.org To: Helmut Eller Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Dec 25 16:03:31 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 1tQSv5-0000k8-5e for ged-emacs-devel@m.gmane-mx.org; Wed, 25 Dec 2024 16:03:31 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tQSuU-0002US-Bi; Wed, 25 Dec 2024 10:02:54 -0500 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 1tQSuT-0002UB-E7 for emacs-devel@gnu.org; Wed, 25 Dec 2024 10:02:53 -0500 Original-Received: from mail-ej1-x632.google.com ([2a00:1450:4864:20::632]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tQSuR-0005sI-Q8; Wed, 25 Dec 2024 10:02:53 -0500 Original-Received: by mail-ej1-x632.google.com with SMTP id a640c23a62f3a-aa696d3901bso320493666b.1; Wed, 25 Dec 2024 07:02:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1735138969; x=1735743769; darn=gnu.org; h=content-transfer-encoding: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=UHpbyLiEvUOJtL4y8IezWxbW/kgOiRkAqCxgcXJAxfo=; b=aWN0hQeXwIaS/XJCE9rfm+71T7bzPDFlBAe72qrrV707B0kOCXM6l9HXpoHqXpKzAk R/dhDIlEFy6lIvU9WoBhjb8YdM2+ZVIufb8iiujMipfyjYtvdVt8RnC5bXepXGUrFw6C A4aHUYnKRNk3IDsFuwDH7zcgC8CJKDlDpRlWHZl2rlYhQMrTsvUu6DR5PSZNqQJTRyDJ oa6nOQuoQnBiqwq6fu9uOySARBMWsmjCd4hYY/RXDMrbcBOnHXjQCZenI643j83esNXM fKXkymtvVCupkdaYqm4cTbpmhr2FG1e6C4ma4Zh9eaLQcRMoJfE6WInIWCYeTlT75Taa Un5Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735138969; x=1735743769; h=content-transfer-encoding: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=UHpbyLiEvUOJtL4y8IezWxbW/kgOiRkAqCxgcXJAxfo=; b=VZryYVfb0KzNxIA1L3wT5N2T4yUF6PuU9h98ZTsuy6ucwEn7BQ0+TcwvfMzoxBHTEd pJ/ebrWReqvQGTzlMnZoXoCDAI1nuwwDhFzAtyKxjQNU10ODkQN21AQBbpIEb4Qx5cnT 7Rz1ZR0jQnnRd4ixlwMczRQf0F2frrQN0K4QKTkCQ/8vrdm4u19QXr9lgaK7XeHUxIG9 BSkG9W5vBDSahOLoZAncckMKNPI0AG0etKMp35YreTN7hQoiC0pdHCxMNYbrBEtcKlu7 FgIz/EAftRtnA1VbW6bm55sEqhecop+3WcuwFoAzSs3kT/dPcpW70RU7ODZnu+c5YJLM 8XSQ== X-Forwarded-Encrypted: i=1; AJvYcCU302i/OPHpZcOCrRW+cUdh2MHY/SF0aoEy+OXrJHmu5GEBN81bf/qMFVlxVW+fl+82l5/+8K4Piw==@gnu.org, AJvYcCUe7cLlFyxfdIQyJcV6a+IHJvs4grr2Zfhs2BJzEEoudOhH0XN6TIKlcAcrOa+h/RwNO9grR+yQhscFENg=@gnu.org X-Gm-Message-State: AOJu0Yx1kmGdvx9V8PH5qNdsU/KSD2GR5lq/3Oxzdr1rj+bpYuDF0G4k 5+i3T76Ray801mZGYoRZ5iczQxnsZMFoqAzQwY3h9CrOMBUH9yIena9+95cA X-Gm-Gg: ASbGncvfM4QlrsUVDRv5c6nidi6GJH8hywJNKr6H4tv4J6hv1SVb1ceLai95B3bbE2l Q/iMIxe5j4LZQIDiJ6OWr3xZtBTELBlpu+estQJeMG6Ns0OA8VuAvSL4cS4jRAQxRroix7fjhqo Im+WT+C84h4hpg2PflCuUsHphq8eZqNi4vKQs7Abmq+AGG3Lb96MSJEIq8RRzBRAAsLchi8/9ZE lbG13kY/gsKK68X1XlrypNRDBIIvylEagKRfVW2/k7cpkYZWu3EH0FEs1bIupd6tk86CR5cb1lN m5U+NYklFh6BzPtk0XTZuiBD2m1Rj9GKAdWatxWg651TnobuUD8TQnT7QjZITNFg3Q== X-Google-Smtp-Source: AGHT+IFmxMDZMM5Nk0k4NSSlYCNg+xTsiqS57apdAm0t1tC3adw4OLuYHfAHhizqD6NqDZ9JImEfRg== X-Received: by 2002:a17:907:3da0:b0:aab:cd45:5d3c with SMTP id a640c23a62f3a-aac33685df3mr1795934966b.50.1735138968663; Wed, 25 Dec 2024 07:02:48 -0800 (PST) Original-Received: from pro2 (p200300e0b73d6f00401d1c7c2fc22e2d.dip0.t-ipconnect.de. [2003:e0:b73d:6f00:401d:1c7c:2fc2:2e2d]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aac0e894b60sm821808166b.68.2024.12.25.07.02.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Dec 2024 07:02:48 -0800 (PST) In-Reply-To: <877c7n962e.fsf@gmail.com> (Helmut Eller's message of "Wed, 25 Dec 2024 15:43:21 +0100") Received-SPF: pass client-ip=2a00:1450:4864:20::632; envelope-from=gerd.moellmann@gmail.com; helo=mail-ej1-x632.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:327105 Archived-At: Helmut Eller writes: > On Wed, Dec 25 2024, Gerd M=C3=B6llmann wrote: > >> A problem occurs only, apparently (I've not read the MPS code), when the >> barrier handling code in MPS is called while being in another signal >> handler like Emacs' SIGPROF handler. >> >> >> I don't know what exactly the problem is in the end, in MPS. That would >> be a good question for Richard Brooksby, I think. > > The problem is probably simply that MPS uses a non-recursive lock. The > SIGSEGV signal handler can't claim the lock when it's already claimed. > > See: > https://memory-pool-system.readthedocs.io/en/latest/design/arena.html#loc= ks > > Helmut Could be, but OTOH then it's strange that things work fine when the barriers use Mach exceptions.