From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS17314 8.43.84.0/22 X-Spam-Status: No, score=-3.7 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, PDS_RDNS_DYNAMIC_FP,RCVD_IN_DNSWL_MED,RDNS_DYNAMIC,SPF_HELO_PASS, SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (ip-8-43-85-97.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id 7A45D1F8C6 for ; Wed, 4 Aug 2021 16:16:52 +0000 (UTC) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 41F7D394743E for ; Wed, 4 Aug 2021 16:16:51 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 41F7D394743E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1628093811; bh=BcUu4bPcepza/SwSlWJ7TPt8a4fcTa+sRiDuWfbFyRo=; h=To:Subject:References:Date:In-Reply-To:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=vwgDmBBKyXA4HQodgQoVAEg/ak6rkBzCZD3DYLMWBuoHhffAdqVHrN5bvuKueG/5+ 4/sTpKEHimHvfDC1oDuWD3dCcpp/4aDqQipKB3FHBOq/lI87rJsJe01tInVqlNIFzt 0Hvmi2xvtrVYU9sokUtRr81pWQ8wS/aXPrHL3zBs= Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTP id 51FB73857408 for ; Wed, 4 Aug 2021 16:16:31 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 51FB73857408 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-49-fwfsNrATNuWsadqRe9Vvlg-1; Wed, 04 Aug 2021 12:10:23 -0400 X-MC-Unique: fwfsNrATNuWsadqRe9Vvlg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 96FAB802CBB; Wed, 4 Aug 2021 16:10:22 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.192.123]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BB4BA5C3E0; Wed, 4 Aug 2021 16:10:21 +0000 (UTC) To: Andreas Schwab Subject: Re: Async cacellation and pthread_cleanup_push References: <87zgtxuxa8.fsf@igel.home> <87fsvp9qcz.fsf@oldenburg.str.redhat.com> <87tuk5tcw8.fsf@igel.home> Date: Wed, 04 Aug 2021 18:10:19 +0200 In-Reply-To: <87tuk5tcw8.fsf@igel.home> (Andreas Schwab's message of "Wed, 04 Aug 2021 18:04:07 +0200") Message-ID: <87fsvp6vis.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Florian Weimer via Libc-alpha Reply-To: Florian Weimer Cc: libc-alpha@sourceware.org Errors-To: libc-alpha-bounces+e=80x24.org@sourceware.org Sender: "Libc-alpha" * Andreas Schwab: > On Aug 04 2021, Florian Weimer wrote: > >> * Andreas Schwab: >> >>> Is pthread_cleanup_push supposed to work together with async >>> cancellation? >> >> In our implementation? I think so. > > I don't see how that can work with -fexceptions or in C++, though. Is > that supported? I think it is supposed to work, but it probably is unreliable. >> POSIX doesn't require it, though. > > Chapter and verse? 2.9.5 Thread Cancellation, Thread Cancellation Cleanup Handlers and Async-Cancel Safety. The first section calls pthread_cleanup_push a function, the second section does not list it. > Then the LTP test is INVALID. Which test? It could be a test for Linux extension. Thanks, Florian