From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Aaron Jensen Newsgroups: gmane.emacs.bugs Subject: bug#26397: [PATCH] Use vfork if possible on Darwin (bug#26397) Date: Sun, 9 Apr 2017 17:06:21 -0700 Message-ID: References: <20170409191849.GA67152@breton.holly.idiocy.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: blaine.gmane.org 1491782838 5416 195.159.176.226 (10 Apr 2017 00:07:18 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 10 Apr 2017 00:07:18 +0000 (UTC) Cc: 26397@debbugs.gnu.org, Alan Third To: YAMAMOTO Mitsuharu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Apr 10 02:07:13 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cxMrP-0001IM-JP for geb-bug-gnu-emacs@m.gmane.org; Mon, 10 Apr 2017 02:07:11 +0200 Original-Received: from localhost ([::1]:60022 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cxMrT-0007st-Mm for geb-bug-gnu-emacs@m.gmane.org; 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Mon, 10 Apr 2017 00:07:02 +0000 Original-Received: (at 26397) by debbugs.gnu.org; 10 Apr 2017 00:06:29 +0000 Original-Received: from localhost ([127.0.0.1]:40287 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cxMqi-0003k7-NG for submit@debbugs.gnu.org; Sun, 09 Apr 2017 20:06:28 -0400 Original-Received: from mail-yb0-f196.google.com ([209.85.213.196]:32838) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cxMqh-0003js-LZ for 26397@debbugs.gnu.org; Sun, 09 Apr 2017 20:06:27 -0400 Original-Received: by mail-yb0-f196.google.com with SMTP id 206so3416825ybe.0 for <26397@debbugs.gnu.org>; Sun, 09 Apr 2017 17:06:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=ZpFPSv3Yr7Us8ITHBGTqUFQoxQy9AqlT16VH5MwQ8/I=; b=km9cyp+NuHgxNzaOmbbXC7WPbD1l1vuPlRNNiPaUFnfOgoC/QMGR5nRvFPnhs8CleZ hSI7jJAxGzHJIfcRVMR5tnGfgaa3x+CbQjMYNf17dWKO7JaAlUpRv1riRfGPa1XWSg/m kItVKVDLlf8LNjwq7anC5B3k9qUt5zfPZlhGprerQaP3gpKu7hgwTTE1N+66Nx1IL+4C bHduTancrK7Ilt6OlP+Lm5lVD8Y12wM3+Kf4aSmOMM1t09LHeeaKJePUsWdvwZ6MF3gN UPirvwsvffM7+djys5i80pvt1WDgmcsOp3Z9hZVsH9Py060+VYNzRCdERAL/aQatTV0E 2JTA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=ZpFPSv3Yr7Us8ITHBGTqUFQoxQy9AqlT16VH5MwQ8/I=; b=erN4ryqwEVYzeeZss5Vcod4FMDQhbcK8zT8zH3KM1lbVTdAkyzachSX1jsgf67nH5K 07sOIDj3E2T+cFFPAYHDVXvbGKxXQ09dsnOB2wN/JFCgXqGcXfej0bRDspvAotUOxbLX +UGoweIom47sUx/YEwJjnbw4xwnD+Mg9ExB7Wa5O5cbYDGeWE6e8z8s3IwUJ/cA+E7n9 PxLMKmFTubVhPl4NN2/x/pf8yOKKG9fmQP6IVw3D1q1Mq6AtdZcShADMaX50I6Avf1mC m12zCDRVv/LUt3fV+g8uz4SVktxn68pfqqZMkgDErVw+GIMo+q4WeGvvJ/er1TaxB3LU X0aw== X-Gm-Message-State: AFeK/H1iQz7SOXGWfHKCLbIMxRoXrIHnKIzQLd/FAS8aMvQd75IBq7L3M/oRp4tItdKTc09HgHnwQ9Lgn9AYuw== X-Received: by 10.129.121.151 with SMTP id u145mr38009187ywc.247.1491782781762; Sun, 09 Apr 2017 17:06:21 -0700 (PDT) Original-Received: by 10.37.56.132 with HTTP; Sun, 9 Apr 2017 17:06:21 -0700 (PDT) In-Reply-To: X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:131424 Archived-At: On Sun, Apr 9, 2017 at 4:46 PM, YAMAMOTO Mitsuharu wrote: > According to ChangeLog, setsid in callproc.c seems to be used for > disconnecting from the controlling terminal (so as to avoid using > /dev/tty accidentally?). > > 1997-06-11 Paul Eggert > > * callproc.c (Fcall_process): Use setsid to disconnect child > process from controlling terminal. > > If that is the case (i.e., if we don't have to make the child process > a session leader), then we don't need setsid when the Emacs process > doesn't have the controlling terminal, which is common for Mac-native > GUI sessions. It doesn't apply for TTY or X11 sessions, but fork is > not that slow there. For me, this slows down call-process in TTY emacs by 3ms (from 2.5ms->5.5ms). I typically launch a GUI emacs and connect to the server in TTY via emacsclient, and in that scenario this patch does not slow down call-process in the TTY, but it will affect those who use TTY only, it seems. Aaron