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: [PATCH] support for accessing CPU/core count (processor-count) Date: Sun, 10 Oct 2021 11:02:32 +1100 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------qXevcbnwyILhBkMaxE4bdByV" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28757"; 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 To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Oct 10 02:03:30 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 1mZMJO-0007IM-En for ged-emacs-devel@m.gmane-mx.org; Sun, 10 Oct 2021 02:03:30 +0200 Original-Received: from localhost ([::1]:42086 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mZMJM-0000I3-UK for ged-emacs-devel@m.gmane-mx.org; Sat, 09 Oct 2021 20:03:28 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55008) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mZMIb-00084e-FA for emacs-devel@gnu.org; Sat, 09 Oct 2021 20:02:41 -0400 Original-Received: from mail-pf1-x42a.google.com ([2607:f8b0:4864:20::42a]:45626) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mZMIZ-0002QR-PQ for emacs-devel@gnu.org; Sat, 09 Oct 2021 20:02:41 -0400 Original-Received: by mail-pf1-x42a.google.com with SMTP id i65so8440796pfe.12 for ; Sat, 09 Oct 2021 17:02:38 -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:content-language:to:from :subject; bh=cBnK7H4GlVz69EUp3hxpmhVvIEY5Ao/4jx1QDmWWciA=; b=BdCsBobhNc9UQGTrtpL0jRPj/3gZjMsj6VN9D6YJOasjB60q+sL+yMih0YX1mRpbge 3uhHXVPCq57CA5JeZaF17C31/dR+1fKBj4Qm8Rz7C5pdcNkB475HBQWFoNhAlMOStc1E uaoKFgm4ErFK03vCips/ffeYaGDuhDke6RARbRmMr5De0muvozPvi5JamyL/1ekh35qr XR/ous/DJw8pG/Vm4yy4YZIKCNYTdAQhH5S5SiCOps1S2O9/7aUqXQl57hipA1Bx1ITD qm132XfC6Fo1bDLO2NM9hisTh08cP4BjOB7UFNpzsQ6yeNeru47LX52N+2AR+zmYp7PZ nJyA== 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 :content-language:to:from:subject; bh=cBnK7H4GlVz69EUp3hxpmhVvIEY5Ao/4jx1QDmWWciA=; b=DTsV1Mv5oUk2l+Lf8mBKDeEOkzHz0iax3qieahxoMgo/Z2aUZsavOYPXj7nGsw96Uj qpUyDhDGKdRv/hLTpnEr/mZg3osYFwLS6/EjfrtKKOEUye5cYYjsZEwnqSfxg2Uii/II gpOfMIN6h1qHRSYdl2oEBDdYuheHUXRPDa0eWqL+o20C9GxeXe3o6jJq5c92xAPwyFSz gN786bI6usN8sF6TmHxt2QaGHohyXVEzl1j1Gwhy3NgUBMUNjX+M5RLMFjNUO4TqJG7F 9s5QD75sWXm9bYKOppJ+x7Vh+1vbEahhZwwHc1acQro+mNgN1SMECCPVYSCPFYH9igcl ADDg== X-Gm-Message-State: AOAM532Tk6IVpM+YRja0xIGTh3p9fvDgNstIkqNf0d7mVsIYxSmva3aP crVXUUsQCkQ42EvH3uc/BX90FDGJJTU= X-Google-Smtp-Source: ABdhPJyPWmubUsZFmkr4E6CH+NGk+V+Hk3oT+FU4ezRmMDBNekFVFAY5QCL4CPlF7RhF7SSpbNoXNg== X-Received: by 2002:a63:1e03:: with SMTP id e3mr11630280pge.213.1633824157537; Sat, 09 Oct 2021 17:02:37 -0700 (PDT) Original-Received: from ?IPV6:2402:b801:2844:2100::1? ([2402:b801:2844:2100::1]) by smtp.gmail.com with ESMTPSA id v2sm2978215pje.15.2021.10.09.17.02.34 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 09 Oct 2021 17:02:35 -0700 (PDT) Content-Language: en-US Received-SPF: pass client-ip=2607:f8b0:4864:20::42a; envelope-from=ideasman42@gmail.com; helo=mail-pf1-x42a.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, 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:276629 Archived-At: This is a multi-part message in MIME format. --------------qXevcbnwyILhBkMaxE4bdByV Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi, this patch adds support for accessing the number of CPU's / cores on a system, matching CPython's multiprocessing.cpu_count() [0]. I've only tested this for Linux, this includes code that should work on other platforms, although that would need to be double-checked of course. For reference I checked CPython / Blender & Stack-overflow [1] Accessing this information can be useful to automatically detect the number of jobs to run. [0]: https://docs.python.org/3/library/multiprocessing.html#multiprocessing.cpu_count [1]: https://stackoverflow.com/a/3006416/432509 --------------qXevcbnwyILhBkMaxE4bdByV Content-Type: text/x-patch; charset=UTF-8; name="0001-processor-count.patch" Content-Disposition: attachment; filename="0001-processor-count.patch" Content-Transfer-Encoding: base64 Y29tbWl0IDdiZTUzZjEwZjNkZjNjMzE4M2NjOTdkNmJiYWRiNzhlYmI2MWU4ZDIKQXV0aG9y OiBDYW1wYmVsbCBCYXJ0b24gPGlkZWFzbWFuNDJAZ21haWwuY29tPgpEYXRlOiAgIFN1biBP Y3QgMTAgMTA6MTY6NDcgMjAyMSArMTEwMAoKICAgIFN1cHBvcnQgYWNjZXNzaW5nIHRoZSBu dW1iZXIgb2YgQ1BVJ3MuCgogICAgQWRkIChwcm9jZXNzb3ItY291bnQpIGZvciBhY2Nlc3Np bmcgdGhlIG51bWJlciBvZiBjb3Jlcy9DUFUncy4KCmRpZmYgLS1naXQgYS9zcmMvZW1hY3Mu YyBiL3NyYy9lbWFjcy5jCmluZGV4IDg2NmU0M2ZkYTkuLjI2ZTJmNmIxZjIgMTAwNjQ0Ci0t LSBhL3NyYy9lbWFjcy5jCisrKyBiL3NyYy9lbWFjcy5jCkBAIC0zMTU2LDYgKzMxNTYsMzgg QEAgREVGVU4gKCJkYWVtb24taW5pdGlhbGl6ZWQiLCBGZGFlbW9uX2luaXRpYWxpemVkLCBT ZGFlbW9uX2luaXRpYWxpemVkLCAwLCAwLCAwLAogICByZXR1cm4gUXQ7CiB9CgorREVGVU4g KCJwcm9jZXNzb3ItY291bnQiLCBGcHJvY2Vzc29yX2NvdW50LCBTcHJvY2Vzc29yX2NvdW50 LCAwLCAwLCAwLAorICAgICAgIGRvYzogLyogUmV0dXJuIHRoZSBudW1iZXIgb2YgQ1BVcyBp biB0aGUgc3lzdGVtLgorCitUaGUgdmFsdWUgd2lsbCBhbHdheXMgYmUgYWJvdmUgemVybywg MSBmb3IgdW5zdXBwb3J0ZWQgc3lzdGVtcy4gICovKQorICAodm9pZCkKK3sKKyAgaW50IG5w cm9jID0gLTE7CisjaWZkZWYgV0lORE9XU05UCisgIFNZU1RFTV9JTkZPIGluZm87CisgIEdl dFN5c3RlbUluZm8oJmluZm8pOworICBucHJvYyA9IChpbnQpaW5mby5kd051bWJlck9mUHJv Y2Vzc29yczsKKyNlbGlmIGRlZmluZWQgKF9fQVBQTEVfXykgfHwgXAorICAgICAgZGVmaW5l ZCAoX19PcGVuQlNEX18pIHx8IFwKKyAgICAgIGRlZmluZWQgKF9fRnJlZUJTRF9fKSB8fCBc CisgICAgICBkZWZpbmVkIChfX05ldEJTRF9fKSB8fCBcCisgICAgICBkZWZpbmVkIChfX0Ry YWdvbkZseV9fKQorICBpbnQgbWliWzJdOworICBzaXplX3QgbGVuOworCisgIG1pYlswXSA9 IENUTF9IVzsKKyAgbWliWzFdID0gSFdfTkNQVTsKKyAgbGVuID0gc2l6ZW9mKG5wcm9jKTsK KyAgc3lzY3RsKG1pYiwgMiwgJm5wcm9jLCAmbGVuLCBudWxscHRyLCAwKTsKKyNlbGlmIGRl ZmluZWQgKF9faHB1eCkKKyAgbnByb2MgPSBtcGN0bChNUENfR0VUTlVNU1BVUywgTlVMTCwg TlVMTCk7CisjZWxpZiBkZWZpbmVkIChfU0NfTlBST0NFU1NPUlNfT05MTikKKyAgbnByb2Mg PSAoaW50KXN5c2NvbmYoX1NDX05QUk9DRVNTT1JTX09OTE4pOworI2VuZGlmCisKKyAgcmV0 dXJuIG1ha2VfZml4bnVtIChNQVgobnByb2MsIDEpKTsKK30KKwogdm9pZAogc3ltc19vZl9l bWFjcyAodm9pZCkKIHsKQEAgLTMxNzYsNiArMzIwOCw3IEBAIHN5bXNfb2ZfZW1hY3MgKHZv aWQpCiAgIGRlZnN1YnIgKCZTaW52b2NhdGlvbl9kaXJlY3RvcnkpOwogICBkZWZzdWJyICgm U2RhZW1vbnApOwogICBkZWZzdWJyICgmU2RhZW1vbl9pbml0aWFsaXplZCk7CisgIGRlZnN1 YnIgKCZTcHJvY2Vzc29yX2NvdW50KTsKCiAgIERFRlZBUl9MSVNQICgiY29tbWFuZC1saW5l LWFyZ3MiLCBWY29tbWFuZF9saW5lX2FyZ3MsCiAJICAgICAgIGRvYzogLyogQXJncyBwYXNz ZWQgYnkgc2hlbGwgdG8gRW1hY3MsIGFzIGEgbGlzdCBvZiBzdHJpbmdzLgo= --------------qXevcbnwyILhBkMaxE4bdByV--