From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 58676 invoked by alias); 8 Aug 2018 14:15:53 -0000 Mailing-List: contact newlib-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: newlib-owner@sourceware.org Received: (qmail 58658 invoked by uid 89); 8 Aug 2018 14:15:53 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-1.3 required=5.0 tests=AWL,BAYES_00,FOREIGN_BODY,GIT_PATCH_2,SPF_PASS,T_FILL_THIS_FORM_SHORT autolearn=no version=3.3.2 spammy=H*i:sk:e8e3462, H*f:sk:e8e3462, HTo:D*pl, Fax X-HELO: dedi548.your-server.de Received: from dedi548.your-server.de (HELO dedi548.your-server.de) (85.10.215.148) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 08 Aug 2018 14:15:51 +0000 Received: from [88.198.220.130] (helo=sslproxy01.your-server.de) by dedi548.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.85_2) (envelope-from ) id 1fnPFd-0005ut-L5; Wed, 08 Aug 2018 16:15:49 +0200 Received: from [82.135.62.35] (helo=mail.embedded-brains.de) by sslproxy01.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1fnPFd-0007bs-Du; Wed, 08 Aug 2018 16:15:49 +0200 Received: from localhost (localhost.localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id 7C23E2A1685; Wed, 8 Aug 2018 16:16:13 +0200 (CEST) Received: from mail.embedded-brains.de ([127.0.0.1]) by localhost (zimbra.eb.localhost [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id tCAfZ3qg9Zzi; Wed, 8 Aug 2018 16:16:12 +0200 (CEST) Received: from localhost (localhost.localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id E29432A1686; Wed, 8 Aug 2018 16:16:12 +0200 (CEST) Received: from mail.embedded-brains.de ([127.0.0.1]) by localhost (zimbra.eb.localhost [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id CoMl83Ma_OlQ; Wed, 8 Aug 2018 16:16:12 +0200 (CEST) Received: from [192.168.96.149] (unknown [192.168.96.149]) by mail.embedded-brains.de (Postfix) with ESMTPSA id DED6B2A1685; Wed, 8 Aug 2018 16:16:10 +0200 (CEST) Subject: Re: [PATCH v3 3/5] Introduce _REENT_GLOBAL_STDIO_STREAMS To: Freddie Chopin , newlib@sourceware.org References: <20170629122002.25614-1-sebastian.huber@embedded-brains.de> <20170629122002.25614-3-sebastian.huber@embedded-brains.de> <20170629183138.GY6201@calimero.vinschen.de> <20170630081306.GA6201@calimero.vinschen.de> <1068535433.14282.1498813082840.JavaMail.zimbra@embedded-brains.de> From: Sebastian Huber Message-ID: <7360fe32-cd12-5b49-1d1c-22a7b109cc49@embedded-brains.de> Date: Wed, 08 Aug 2018 15:20:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes X-SW-Source: 2018/txt/msg00627.txt.bz2 On 08/08/18 15:19, Freddie Chopin wrote: > On Fri, 2017-06-30 at 10:58 +0200, Sebastian Huber wrote: >> ----- Am 30. Jun 2017 um 10:13 schrieb Corinna Vinschen >> vinschen@redhat.com: >> >>> On Jun 30 07:43, Sebastian Huber wrote: >>>> On 29/06/17 20:31, Corinna Vinschen wrote: >>>> >>>>> And, JFYI, Cygwin will start to use it too after the next >>>>> release:) >>>> There are some new problems with this change. We have no >>>> reference counting >>>> in the FILE objects, so a freopen(..., stdin), closes the global >>>> stdin FILE >>>> object (__sf[0]), etc. What works is a stdin =3D fopen(). I guess >>>> this could >>>> break existing applications. >>> Erm... isn't that expected behaviour? stdin/stdout/stderr are >>> global >>> objects, after all. They were never thread-local per POSIX. >> The stdin/stdout/stderr pointers are still thread-local with this >> option. Only the FILE objects itself are now global. If you do a >> stdin =3D fopen() you get a completely thread-local stdin. I have >> absolutely no idea why this stuff is thread-local in Newlib by >> default. > Would that be possible, to make stdin/stdout/stderr completely global > (remove them from _reent, use global objects) when > _REENT_GLOBAL_STDIO_STREAMS is enabled? The thread-local IO streams are a Newlib feature that is used by our=20 applications. --=20 Sebastian Huber, embedded brains GmbH Address : Dornierstr. 4, D-82178 Puchheim, Germany Phone : +49 89 189 47 41-16 Fax : +49 89 189 47 41-09 E-Mail : sebastian.huber@embedded-brains.de PGP : Public key available on request. Diese Nachricht ist keine gesch=C3=A4ftliche Mitteilung im Sinne des EHUG.