From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Campbell Barton Newsgroups: gmane.emacs.devel Subject: Re: [PATCH] support for accessing CPU/core count (processor-count) Date: Mon, 11 Oct 2021 15:01:38 +1100 Message-ID: <46728405-9441-4e3d-be5e-75e1bceaee70@gmail.com> References: <87y270bazi.fsf@yahoo.com> <87sfx8b6ta.fsf@yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="40032"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Cc: emacs-devel@gnu.org To: Po Lu Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Oct 11 06:03:01 2021 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 1mZmWj-000AA9-IH for ged-emacs-devel@m.gmane-mx.org; Mon, 11 Oct 2021 06:03:01 +0200 Original-Received: from localhost ([::1]:45994 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mZmWh-0001JC-2X for ged-emacs-devel@m.gmane-mx.org; Mon, 11 Oct 2021 00:02:59 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41768) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mZmVW-0000c0-9n for emacs-devel@gnu.org; Mon, 11 Oct 2021 00:01:46 -0400 Original-Received: from mail-pl1-x632.google.com ([2607:f8b0:4864:20::632]:41941) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mZmVU-0001sl-GW for emacs-devel@gnu.org; Mon, 11 Oct 2021 00:01:45 -0400 Original-Received: by mail-pl1-x632.google.com with SMTP id x8so10366301plv.8 for ; Sun, 10 Oct 2021 21:01:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=JXGycq1Q+ptRHKBjFKGPsfzBgorOiRckLfV+hgGkXoE=; b=TMh8ahgLCYF1lT7xMpJg+aRyMoWqteaWrxjMXxtS/yUFxHMEWR5rdJZEvYZeRhxtEw +8B5/7fisb8AyIwatZF6GfBrH2n3zvJ6OvWQ98E/HipkEmaY8VRDIPp/ZJrcs8cURICN 6XLQOUcjMzDnvoFnaDhnJwdtBrPvuDYliccUilI020oz95MkaNks1zD2COUMeNjbN2tk xj3dvSsFFcXRu4ZCPENlOePtf/Zw95MAQzZB7wDGWip7mPVbtDy2i/+dxdrsCF0zO8Vl 0lIHNLYfCJCFpEa+T6BycDuwfa9MOofa9txD2exSe92T8wtKn8rmSYKT+6Z6fpH6dzbo 65/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=JXGycq1Q+ptRHKBjFKGPsfzBgorOiRckLfV+hgGkXoE=; b=5JdD6b+5TyeYVCyas37iIZhdbPMkr1oODqRb+AOP/o9BQ2YQctfKIalj0mTcrnwQin SmOJXEbq8kOvwlPMMXPEOfDqCJ4DVWAx+eHvOidE+amulaDTmD3vPirNhYuQ5x1yw1/M 8lnFhTiTul9cFJ/JZpEz3OgIXJJYH16IMKrtLDmH9N3+JwIkFZeW4xHVd6jxg8bFt+Ax +ajytndGgK0IjIprgs0EoS1e3yD6u9zSjDtbwfZjjeOCt/9rACWcw2JpqF1+aVX0ob55 6lCrgPLJMxdZk6zGdYAeTi3b/1ZPqDAQSsWMm/7j9TiYJGq+kwYDcD+FsZi8jbm/QVEn L3/g== X-Gm-Message-State: AOAM532SuYUHu4wSTEvx2U3mNIVRtZQWvnNxl1EVIyTy5mIMVpOL/2y2 j/KMpKx1OX6Zqyg2QkTwXC4= X-Google-Smtp-Source: ABdhPJyIKkBkXiqwjnIedlLptZxM+hscqK0J0hcEtEftJ3dfQLxbN7VamV66ott4eUjS5gxldOrbIw== X-Received: by 2002:a17:90a:7d05:: with SMTP id g5mr27801471pjl.14.1633924902670; Sun, 10 Oct 2021 21:01:42 -0700 (PDT) Original-Received: from ?IPV6:2402:b801:2844:2100::1? ([2402:b801:2844:2100::1]) by smtp.gmail.com with ESMTPSA id h23sm2730015pfn.109.2021.10.10.21.01.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 10 Oct 2021 21:01:42 -0700 (PDT) Content-Language: en-US In-Reply-To: <87sfx8b6ta.fsf@yahoo.com> Received-SPF: pass client-ip=2607:f8b0:4864:20::632; envelope-from=ideasman42@gmail.com; helo=mail-pl1-x632.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 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_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, NICE_REPLY_A=-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: 2.1.23 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:276721 Archived-At: On 10/11/21 14:04, Po Lu wrote: > Campbell Barton writes: > >> This seems like a better location. Updated the patch, including >> OpenBSD's ncpuonline support from Omar Polo. > > Doesn't gnulib already have a portable mechanism to obtain the number of > CPUs in a system? And if not, wouldn't it be useful there? Yes, `num_processors (NPROC_ALL)` is an equivalent that would work. Correction to my previous mail which mentioned CPU affinity being an issue, that's only used for `NPROC_CURRENT`. If the additional complexity of GNULib's `lib/nproc.c` isn't viewed as a major down-side (~279-SLOC ~27-SLOC from the patch I submitted), both can work.