From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dedi548.your-server.de (dedi548.your-server.de [85.10.215.148]) by sourceware.org (Postfix) with ESMTPS id F34763856241 for ; Thu, 19 May 2022 08:49:41 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org F34763856241 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=embedded-brains.de Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=embedded-brains.de Received: from sslproxy01.your-server.de ([78.46.139.224]) by dedi548.your-server.de with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nrbqm-000BLM-Aj for newlib@sourceware.org; Thu, 19 May 2022 10:49:40 +0200 Received: from [82.100.198.138] (helo=mail.embedded-brains.de) by sslproxy01.your-server.de with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nrbqm-000V6f-60 for newlib@sourceware.org; Thu, 19 May 2022 10:49:40 +0200 Received: from localhost (localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id D49A648013C for ; Thu, 19 May 2022 10:49:39 +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 t4SEOm4z_R1q for ; Thu, 19 May 2022 10:49:39 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id 7663848019F for ; Thu, 19 May 2022 10:49:39 +0200 (CEST) X-Virus-Scanned: amavisd-new at zimbra.eb.localhost 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 iCkr2WPAzjKl for ; Thu, 19 May 2022 10:49:39 +0200 (CEST) Received: from [10.10.171.14] (unknown [10.10.171.14]) by mail.embedded-brains.de (Postfix) with ESMTPSA id 4236148013C for ; Thu, 19 May 2022 10:49:39 +0200 (CEST) Message-ID: <7bc2dc3d-3e9c-2b1d-7d8a-fd00d17ba237@embedded-brains.de> Date: Thu, 19 May 2022 10:49:38 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: Optionally use thread-local objects for struct _reent members Content-Language: en-US From: Sebastian Huber To: Newlib References: <32452837-4a35-d458-c971-c5c1e4f92290@embedded-brains.de> In-Reply-To: <32452837-4a35-d458-c971-c5c1e4f92290@embedded-brains.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Authenticated-Sender: smtp-embedded@poldinet.de X-Virus-Scanned: Clear (ClamAV 0.103.5/26546/Thu May 19 10:03:47 2022) X-Spam-Status: No, score=-5.7 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, NICE_REPLY_A, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: newlib@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Newlib mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 May 2022 08:49:43 -0000 Hello, I just would like to give a short status update. With the recent patches using _REENT_GLOBAL is no longer required. The=20 global state of Newlib is managed by dedicated objects (for example the=20 FILE object list or the exit handlers). This enables us to use=20 thread-local objects for all members of struct _reent. We should have a=20 patch ready for review soon. It would help if we could make the _REENT_GLOBAL_STDIO_STREAMS option=20 the default behaviour and remove the associated conditional code. It is=20 currently enabled by Cygwin and RTEMS. I will send a patch to discuss=20 this next week. We didn't work on the support for constructors/destructors for=20 thread-local objects yet, see: https://www.openwall.com/lists/libc-coord/2022/01/21/1 My approach would be to first add a prototype implementation to Newlib=20 using a dedicated linker set and then make a proposal for the ELF support= . --=20 embedded brains GmbH Herr Sebastian HUBER Dornierstr. 4 82178 Puchheim Germany email: sebastian.huber@embedded-brains.de phone: +49-89-18 94 741 - 16 fax: +49-89-18 94 741 - 08 Registergericht: Amtsgericht M=C3=BCnchen Registernummer: HRB 157899 Vertretungsberechtigte Gesch=C3=A4ftsf=C3=BChrer: Peter Rasmussen, Thomas= D=C3=B6rfler Unsere Datenschutzerkl=C3=A4rung finden Sie hier: https://embedded-brains.de/datenschutzerklaerung/