From patchwork Tue Jun 21 05:52:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Oliva X-Patchwork-Id: 1645850 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.a=rsa-sha256 header.s=default header.b=po2VodK6; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org (client-ip=2620:52:3:1:0:246e:9693:128c; helo=sourceware.org; envelope-from=gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org; receiver=) Received: from sourceware.org (server2.sourceware.org [IPv6:2620:52:3:1:0:246e:9693:128c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4LRwgB3MGdz9sGp for ; Tue, 21 Jun 2022 15:53:42 +1000 (AEST) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id EB83C3840C15 for ; Tue, 21 Jun 2022 05:53:39 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EB83C3840C15 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1655790820; bh=9k6nG6XunebDdFwqODP331ZJbflCcjKAH+mToX0CN6Q=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=po2VodK6A9tjkqjGn7swbn2VOaNQc3PBptg5a8zd0zN5yrD9zLflkethmCXbMMAG4 uueOIKxuToYEcXiLYeTna1zgh1ZXK5YTTkyyMqs/E1/S0eA8oyI3VXFxGdwhbEDc9E d7Tg+OjAoTaWR9kGyhe15RxCSxpqXT4hU87f8nU0= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from rock.gnat.com (rock.gnat.com [205.232.38.15]) by sourceware.org (Postfix) with ESMTPS id E52FD384144C; Tue, 21 Jun 2022 05:53:19 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org E52FD384144C Received: from localhost (localhost.localdomain [127.0.0.1]) by filtered-rock.gnat.com (Postfix) with ESMTP id A18A01160D9; Tue, 21 Jun 2022 01:53:19 -0400 (EDT) X-Virus-Scanned: Debian amavisd-new at gnat.com Received: from rock.gnat.com ([127.0.0.1]) by localhost (rock.gnat.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id c73mcv6taZzY; Tue, 21 Jun 2022 01:53:19 -0400 (EDT) Received: from free.home (tron.gnat.com [IPv6:2620:20:4000:0:46a8:42ff:fe0e:e294]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by rock.gnat.com (Postfix) with ESMTPS id 69E8E1160D8; Tue, 21 Jun 2022 01:53:19 -0400 (EDT) Received: from livre (livre.home [172.31.160.2]) by free.home (8.15.2/8.15.2) with ESMTPS id 25L5qtcG693283 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 21 Jun 2022 02:52:58 -0300 To: gcc-patches@gcc.gnu.org, libstdc++@gcc.gnu.org Subject: [PATCH] libstdc++: testsuite: call sched_yield for nonpreemptive targets Organization: Free thinker, does not speak for AdaCore Date: Tue, 21 Jun 2022 02:52:55 -0300 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 X-Spam-Status: No, score=-12.3 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, 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: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Alexandre Oliva via Gcc-patches From: Alexandre Oliva Reply-To: Alexandre Oliva Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org Sender: "Gcc-patches" As in the gcc testsuite, systems without preemptive multi-threading require sched_yield calls to be placed at points in which a context switch might be needed to enable the test to complete. Regstrapped on x86_64-linux-gnu, also tested with a cross to aarch64-rtems6. Ok to install? for libstdc++-v3/ChangeLog * testsuite/30_threads/this_thread/60421.cc (test02): Call sched_yield. --- .../testsuite/30_threads/this_thread/60421.cc | 1 + 1 file changed, 1 insertion(+) diff --git a/libstdc++-v3/testsuite/30_threads/this_thread/60421.cc b/libstdc++-v3/testsuite/30_threads/this_thread/60421.cc index ad6f9aeffcc80..12dbeba1cc492 100644 --- a/libstdc++-v3/testsuite/30_threads/this_thread/60421.cc +++ b/libstdc++-v3/testsuite/30_threads/this_thread/60421.cc @@ -59,6 +59,7 @@ test02() while (!sleeping) { // Wait for the thread to start sleeping. + sched_yield (); } while (sleeping) {