From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2E8C8CA0EEB for ; Tue, 19 Aug 2025 20:29:40 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uoSvn-000449-B2; Tue, 19 Aug 2025 16:27:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uoSvl-00043f-Gm for qemu-devel@nongnu.org; Tue, 19 Aug 2025 16:27:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uoSvk-0006Rv-34 for qemu-devel@nongnu.org; Tue, 19 Aug 2025 16:27:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1755635259; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HzSH5386A2ciXWk609Dzo5lu5Yf4nIt0Y0Ov5liK81E=; b=Tz6Sn73vQikqKGFm9wh7W9G/XMWJHlZuKSrNA4c45TQnHey3I2bYRXHqZfOuMtdtWO1U8n EHWgDMx/kAh8zGiAfhnM86YM3EgqCniGSVYRba/m7B4p/g5qANVE7mCo5rK0qKsjOcRliB eI7YonmMKWTQx/JkOPpQ+GPQRqZCDNQ= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-203-HwxLKlNCOpGoWXPUnMxXuA-1; Tue, 19 Aug 2025 16:27:35 -0400 X-MC-Unique: HwxLKlNCOpGoWXPUnMxXuA-1 X-Mimecast-MFC-AGG-ID: HwxLKlNCOpGoWXPUnMxXuA_1755635254 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (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 mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id BE71F19775AD; Tue, 19 Aug 2025 20:27:33 +0000 (UTC) Received: from toolbx.redhat.com (unknown [10.42.28.237]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id A504F19560B0; Tue, 19 Aug 2025 20:27:29 +0000 (UTC) From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Manos Pitsidianakis , Hanna Reitz , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Kevin Wolf , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , "Dr. David Alan Gilbert" , devel@lists.libvirt.org, Stefan Weil , qemu-block@nongnu.org, Paolo Bonzini , Markus Armbruster , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PATCH 04/12] util: set the name for the 'main' thread Date: Tue, 19 Aug 2025 21:27:00 +0100 Message-ID: <20250819202708.1185594-5-berrange@redhat.com> In-Reply-To: <20250819202708.1185594-1-berrange@redhat.com> References: <20250819202708.1185594-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The default main thread name is undefined, so use a constructor to explicitly set it to 'main'. This constructor is marked to run early as the thread name is intended to be used in error reporting / logs which may be triggered very early in QEMU execution. Signed-off-by: Daniel P. Berrangé --- util/qemu-thread-posix.c | 12 ++++++++++++ util/qemu-thread-win32.c | 6 ++++++ 2 files changed, 18 insertions(+) diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c index 7c985b5d38..121d7ed69b 100644 --- a/util/qemu-thread-posix.c +++ b/util/qemu-thread-posix.c @@ -22,6 +22,18 @@ #include #endif +static void __attribute__((__constructor__(QEMU_CONSTRUCTOR_EARLY))) +qemu_thread_init(void) +{ +# if defined(CONFIG_PTHREAD_SETNAME_NP_W_TID) + pthread_setname_np(pthread_self(), "main"); +# elif defined(CONFIG_PTHREAD_SETNAME_NP_WO_TID) + pthread_setname_np("main"); +# elif defined(CONFIG_PTHREAD_SET_NAME_NP) + pthread_set_name_np(pthread_self(), "main"); +# endif +} + static void error_exit(int err, const char *msg) { fprintf(stderr, "qemu: %s: %s\n", msg, strerror(err)); diff --git a/util/qemu-thread-win32.c b/util/qemu-thread-win32.c index 9595a5b090..5e6ca0c12f 100644 --- a/util/qemu-thread-win32.c +++ b/util/qemu-thread-win32.c @@ -332,6 +332,12 @@ static void set_thread_description(HANDLE h, const char *name) SetThreadDescriptionFunc(h, namew); } +static void __attribute__((__constructor__(QEMU_CONSTRUCTOR_EARLY))) +qemu_thread_init(void) +{ + set_thread_description(GetCurrentThread(), "main"); +} + void qemu_thread_create(QemuThread *thread, const char *name, void *(*start_routine)(void *), void *arg, int mode) -- 2.50.1