From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Helmut Eller Newsgroups: gmane.emacs.devel Subject: Re: MPS: Area scanners Date: Tue, 07 May 2024 07:53:11 +0200 Message-ID: <87y18myxq0.fsf@gmail.com> References: 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="22301"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Eli Zaretskii , Emacs Devel To: Gerd =?utf-8?Q?M=C3=B6llmann?= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue May 07 07:54:04 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 1s4Dm7-0005fo-Or for ged-emacs-devel@m.gmane-mx.org; Tue, 07 May 2024 07:54:03 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s4DlO-0007u6-MK; Tue, 07 May 2024 01:53:18 -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 1s4DlN-0007tP-I3 for emacs-devel@gnu.org; Tue, 07 May 2024 01:53:17 -0400 Original-Received: from mail-ej1-x630.google.com ([2a00:1450:4864:20::630]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1s4DlL-0004WJ-Qz; Tue, 07 May 2024 01:53:17 -0400 Original-Received: by mail-ej1-x630.google.com with SMTP id a640c23a62f3a-a59cf0bda27so189265766b.0; Mon, 06 May 2024 22:53:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1715061193; x=1715665993; 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=Jy+jSumdAoeCXsSs+rOmyEvX9w50oLlTwSBKL3Nm2OI=; b=h4yRTEIysSsA4Fy6CUNBjrXrTA3ocw8c0Ez0jzkzNGz9eTeRqK/XopS1dkYmwIKsw8 s+xTkkFWJppxygETAVKAzzsmGA/dP65qtxQZJfQvMr4VJy9U0GDnCdJwuwOALiSzgbWC vL70hsR641QOlbnl572g4TYpWFk0BS8jCHOGiOUnf8IQc8rynSw1C/zyOFx2gA+7VVge AjKqBojWHCocmZBMaiq88sYlzLBIok9zpo9sII76Fp+bDqn7d1kkdA4Qvp99pHDOBmSB 9XKWj7AMYGf6kiTEymFVFHt/ah8a+rcBOwKEk0tQXXs14eB5X++4u6HzC0S9+l5AIrw+ NvKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715061193; x=1715665993; 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=Jy+jSumdAoeCXsSs+rOmyEvX9w50oLlTwSBKL3Nm2OI=; b=KAFmVCpQ4iQNzl8JOgrNtNIat+Mh9DXgVxOOx9+UB4MlgxYViHVs0Tz7oz6Rgfx8A4 h29yqHXcYhHIodmf/QC5Gu9hVLNysZB39WlzZOUO8yf6m63MFiUHOa3xeEtDLaeb3/nh CYrxKm9q7HWWOvMnHHJz5Jfpy5bDJHxCpkl43DRTCpck3TuMnSI6Vs0iLatYTxKNqmcb 2v6/ei/+9V9KH+D2GC2jwbtKyYryq8NhmVndvYSGUN9T7XmNQQaG/doIlycChOHlfygS YjUpcN6gc2XQcVdFnFS/VNfYzYESB2EMrxA5aWx01ZwNZIdzEaJiYB1w6BbEuSgourES zaRA== X-Forwarded-Encrypted: i=1; AJvYcCX4u9ykqFIOWUYvw29lCqJ/F0aXABqISJewDviH81GNwi9+6ltB2Un2vOuUU83axgWOFK/dq32TAx0SrsCMs1xvoE6x X-Gm-Message-State: AOJu0Yxamo/9dOvPNNUYUOvmoFvyIoG6D+/wkKRcC84LsNI1IvAkKsNJ fEQGH0fyV80VI98urEtk3/UC6xLU+5PkU1SA/deAW2rXm5fs7AdPphFTCw== X-Google-Smtp-Source: AGHT+IEkhrm8Hw8syBMC/lecbQj3/9B0n0nAgn8p5u8rl0BxOJMoFp+pA/oC8S4RGNE0R5mXJNyeBg== X-Received: by 2002:a50:ab1a:0:b0:56e:2b80:d87e with SMTP id s26-20020a50ab1a000000b0056e2b80d87emr10856066edc.2.1715061193220; Mon, 06 May 2024 22:53:13 -0700 (PDT) Original-Received: from caladan (dial-184253.pool.broadband44.net. [212.46.184.253]) by smtp.gmail.com with ESMTPSA id f20-20020a056402195400b005725c56b35bsm5952197edz.71.2024.05.06.22.53.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 May 2024 22:53:12 -0700 (PDT) In-Reply-To: ("Gerd =?utf-8?Q?M=C3=B6llman?= =?utf-8?Q?n=22's?= message of "Mon, 06 May 2024 20:28:52 +0200") Received-SPF: pass client-ip=2a00:1450:4864:20::630; envelope-from=eller.helmut@gmail.com; helo=mail-ej1-x630.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:318919 Archived-At: On Mon, May 06 2024, Gerd M=C3=B6llmann wrote: > I'd be interested in others' opinions! The way I understand the doc is this: a) Area scanners are called from a signal handler. b) MPS is a stop-the-world design, i.e. all threads are stopped before an area scanner is called. Because of a) the usual restrictions for signal handlers apply and because b) we have exclusive access.