Eli Zaretskii <eliz@HIDDEN>
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Full text available.Received: (at 78465) by debbugs.gnu.org; 17 May 2025 07:48:27 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat May 17 03:48:27 2025 Received: from localhost ([127.0.0.1]:44989 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1uGCHT-0007rK-4d for submit <at> debbugs.gnu.org; Sat, 17 May 2025 03:48:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:32892) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1uGCHR-0007r0-B8; Sat, 17 May 2025 03:48:25 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1uGCHL-00059Y-3v; Sat, 17 May 2025 03:48:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=asAFRNX0Fpa5LQjEYv0iZLb0HL3AKgsJ7QX6XNq7uKM=; b=i+B6dR/La+WWSpf7Fs5/ pzT5w0gxNfFamea8gzHfsTDnW0oMLUyVUl5lyXdmjbUoVDRqOczQlzEVUUvXncwpk2Ona06xim6Px TIdS8ayLg6jf4hDdrQgzCL+NIqKeQySwuDpt2okPMEIm9jzyN4LCBTl0dJlm0KDHNfhyNWANDsR7x K1NZkfStHBWVZ0S2TFrSmspwx/elsAu9wwvydcdu9/giHJlf2XgVWHSplK78EHfyaYSOgw4jY39bW 2mm4QFNrXl27z48BXRVwGVehMwB0a06tPZnxSh59N1sAPGSYfagkj81g0Qzl3E+yccPUAEjewIqyd XuYVroPpsZ7StA==; Date: Sat, 17 May 2025 10:48:15 +0300 Message-Id: <86y0uvwudc.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Lin Sun <sunlin7@HIDDEN> In-Reply-To: <TYCPR01MB1000491A72E74B80478C1551CFB92A@HIDDEN> (message from Lin Sun on Sat, 17 May 2025 07:09:06 +0000) Subject: Re: bug#78465: [PATCH] * src/lread.c (load): Try reuse the fd if it was opened in binary mode References: <TYCPR01MB1000491A72E74B80478C1551CFB92A@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 78465 Cc: 78465 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) tags 78465 wontfix thanks > From: Lin Sun <sunlin7@HIDDEN> > Date: Sat, 17 May 2025 07:09:06 +0000 > msip_labels: > > This patch will let Emacs avoid always close the fd then open the file with desired fmode in the "Fload" function on windows. It will reduce the counts on calling the "CreateFile" api. > > On my dev windows environment, Emacs startup time reduces from 4.551s to 4.378s with 352 packages. Thanks, but I don't think we should install this. fdopen on Windows has all kinds of subtleties and idiosyncrasies, which is the reason why we don't use fdopen here. This code has seen several changes in the past due to those problems, and I don't want to risk reintroducing them again, certainly not for the benefit of a mere 3.8% reduction in load time. It just isn't worth the risk. Sorry.
bug-gnu-emacs@HIDDEN:bug#78465; Package emacs.
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From: Lin Sun <sunlin7@HIDDEN>
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Subject: [PATCH] * src/lread.c (load): Try reuse the fd if it was opened in
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Content preview: This patch will let Emacs avoid always close the fd then open
the file with desired fmode in the "Fload" function on windows. It will reduce
the counts on calling the "CreateFile" api. On my dev windows environment,
Emacs startup time reduces from 4.551s to 4.378s with 352 packages.
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This patch will let Emacs avoid always close the fd then open the file with=
desired fmode in the "Fload" function on windows. It will reduce the count=
s on calling the "CreateFile"=A0api.=0A=
=0A=
On my dev windows environment, Emacs startup time reduces from 4.551s to 4.=
378s with 352 packages.=A0=0A=
--_002_TYCPR01MB1000491A72E74B80478C1551CFB92ATYCPR01MB10004jp_
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Full text available.bug-gnu-emacs@HIDDEN:bug#78465; Package emacs.
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