From nobody Mon Oct 27 18:31:41 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1521732928250611.9292774654795; Thu, 22 Mar 2018 08:35:28 -0700 (PDT) Received: from localhost ([::1]:33200 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ez2FT-0004ys-82 for importer@patchew.org; Thu, 22 Mar 2018 11:35:27 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59169) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ez298-0000MQ-Ki for qemu-devel@nongnu.org; Thu, 22 Mar 2018 11:28:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ez297-0008CI-Qm for qemu-devel@nongnu.org; Thu, 22 Mar 2018 11:28:54 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:49894 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ez292-00087P-L3; Thu, 22 Mar 2018 11:28:48 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 139FA8160F99; Thu, 22 Mar 2018 15:28:46 +0000 (UTC) Received: from localhost (unknown [10.36.118.6]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5392D2166BAE; Thu, 22 Mar 2018 15:28:45 +0000 (UTC) From: Stefan Hajnoczi To: Date: Thu, 22 Mar 2018 15:28:32 +0000 Message-Id: <20180322152834.12656-2-stefanha@redhat.com> In-Reply-To: <20180322152834.12656-1-stefanha@redhat.com> References: <20180322152834.12656-1-stefanha@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Thu, 22 Mar 2018 15:28:46 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Thu, 22 Mar 2018 15:28:46 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'stefanha@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH 1/3] queue: add QSIMPLEQ_PREPEND() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Fam Zheng , qemu-block@nongnu.org, Max Reitz , Stefan Hajnoczi , Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" QSIMPLEQ_CONCAT(a, b) joins a =3D a + b. The new QSIMPLEQ_PREPEND(a, b) API joins a =3D b + a. Signed-off-by: Stefan Hajnoczi --- include/qemu/queue.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/qemu/queue.h b/include/qemu/queue.h index aa270d2b38..59fd1203a1 100644 --- a/include/qemu/queue.h +++ b/include/qemu/queue.h @@ -324,6 +324,14 @@ struct { = \ } \ } while (/*CONSTCOND*/0) =20 +#define QSIMPLEQ_PREPEND(head1, head2) do { \ + if (!QSIMPLEQ_EMPTY((head2))) { \ + *(head2)->sqh_last =3D (head1)->sqh_first; \ + (head1)->sqh_first =3D (head2)->sqh_first; = \ + QSIMPLEQ_INIT((head2)); \ + } \ +} while (/*CONSTCOND*/0) + #define QSIMPLEQ_LAST(head, type, field) \ (QSIMPLEQ_EMPTY((head)) ? \ NULL : \ --=20 2.14.3