From nobody Tue Feb 10 20:47:37 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1573225983; cv=none; d=zoho.com; s=zohoarc; b=DeEyR8n2k4M97nCYGnMjeuWH438lET/MMMUWOyeeIe81zRTgGh7xwiPuPHuyghi0ToxtTdTjUdwmi07SGtutrNGcdiTy01Y3F1uFnQCc6m+A+9lgW89VgiZeeB1aswhkY0p28YZ/IYWeUaceRn4oWu4mWiagIBTKk0Qy5rPVxDQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1573225983; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=6Ew9vHmiWjfrl81VNZzip86x0hD9sFmj8JBBNQVLTHg=; b=dt1V4dJPegi36sDaBSbzXJCuo7aCwxVeRKUGRS/MEApI60FExmNlEmOB/OdDmYPbRo03TX4S0rQbn1s7+8GUjiu+yWqRTGJJL5fucbd10xtqCIF0n4KnAdh/tY+FRZasg/j0Kh3Q+1EszvUmc/M6OLRT4Eb+gdjeL8h8KfAOOH0= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1573225983241324.1040326709424; Fri, 8 Nov 2019 07:13:03 -0800 (PST) Received: from localhost ([::1]:55976 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iT5wb-0006oP-Q2 for importer@patchew.org; Fri, 08 Nov 2019 10:13:01 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:46566) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iT5of-00056k-GS for qemu-devel@nongnu.org; Fri, 08 Nov 2019 10:04:52 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iT5oe-00059L-5J for qemu-devel@nongnu.org; Fri, 08 Nov 2019 10:04:49 -0500 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:24959 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iT5od-00058c-W6 for qemu-devel@nongnu.org; Fri, 08 Nov 2019 10:04:48 -0500 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-335-V8MqFVBvNz2em5aS0e8HwA-1; Fri, 08 Nov 2019 10:04:46 -0500 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 7FF441005500 for ; Fri, 8 Nov 2019 15:04:45 +0000 (UTC) Received: from localhost (ovpn-112-25.ams2.redhat.com [10.36.112.25]) by smtp.corp.redhat.com (Postfix) with ESMTP id 55E035C1BB; Fri, 8 Nov 2019 15:04:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1573225487; 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=6Ew9vHmiWjfrl81VNZzip86x0hD9sFmj8JBBNQVLTHg=; b=UauoBIlpiIgKhWGGreQM2ll6+wEALljH7TtReKWnkmjCqUl7c2jsvz1QS5ewXVW2944Eqf T9cvmEOq1Yl+saZtN7K+bE5DbGqFYPEgVKsPUdeQa/P/sWbMo1l1xhp5A2oDVmqpH/72mH Aq7IoS4/YyIctkN9CBxBq8FaQxKOCHI= From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= To: qemu-devel@nongnu.org Subject: [PATCH v6 14/25] qmp: add qmp_return_is_cancelled() Date: Fri, 8 Nov 2019 19:01:12 +0400 Message-Id: <20191108150123.12213-15-marcandre.lureau@redhat.com> In-Reply-To: <20191108150123.12213-1-marcandre.lureau@redhat.com> References: <20191108150123.12213-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: V8MqFVBvNz2em5aS0e8HwA-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , armbru@redhat.com, kraxel@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" If the client is gone, and the session finished, no need to return. The async handler can use this information to avoid unnecessary work and exit earlier. Signed-off-by: Marc-Andr=C3=A9 Lureau --- include/qapi/qmp/dispatch.h | 8 ++++++++ qapi/qmp-dispatch.c | 10 ++++++++++ tests/test-qmp-cmds.c | 39 ++++++++++++++++++++++++++++++++++++- 3 files changed, 56 insertions(+), 1 deletion(-) diff --git a/include/qapi/qmp/dispatch.h b/include/qapi/qmp/dispatch.h index 6aef0abc70..6673902e95 100644 --- a/include/qapi/qmp/dispatch.h +++ b/include/qapi/qmp/dispatch.h @@ -91,6 +91,14 @@ void qmp_return_free(QmpReturn *qret); void qmp_return(QmpReturn *qret, QObject *rsp); void qmp_return_error(QmpReturn *qret, Error *err); =20 +/* + * @qmp_return_is_cancelled: + * + * Return true if the QmpReturn is cancelled, and free the QmpReturn + * in this case. + */ +bool qmp_return_is_cancelled(QmpReturn *qret); + void qmp_register_command(QmpCommandList *cmds, const char *name, QmpCommandFunc *fn, QmpCommandOptions options); void qmp_register_async_command(QmpCommandList *cmds, const char *name, diff --git a/qapi/qmp-dispatch.c b/qapi/qmp-dispatch.c index 85e99671a9..e5c1505b05 100644 --- a/qapi/qmp-dispatch.c +++ b/qapi/qmp-dispatch.c @@ -64,6 +64,16 @@ void qmp_return_free(QmpReturn *qret) } } =20 +bool qmp_return_is_cancelled(QmpReturn *qret) +{ + if (!qret->session) { + qmp_return_free(qret); + return true; + } + + return false; +} + static void qmp_return_orderly(QmpReturn *qret) { QmpSession *session =3D qret->session; diff --git a/tests/test-qmp-cmds.c b/tests/test-qmp-cmds.c index 75ef30f6ea..66ad8726fe 100644 --- a/tests/test-qmp-cmds.c +++ b/tests/test-qmp-cmds.c @@ -34,17 +34,29 @@ void qmp_cmd_success_response(Error **errp) { } =20 +static GMainLoop *loop; + static gboolean cmd_async_idle(gpointer user_data) { QmpReturn *qret =3D user_data; =20 - qmp_cmd_async_return(qret, g_new0(Empty2, 1)); + if (!qret->session) { + g_assert(qmp_return_is_cancelled(qret)); + g_main_loop_quit(loop); + g_main_loop_unref(loop); + loop =3D NULL; + } else { + qmp_cmd_async_return(qret, g_new0(Empty2, 1)); + } =20 return G_SOURCE_REMOVE; } =20 void qmp_cmd_async(const char *filename, QmpReturn *qret) { + if (g_str_equal(filename, "cancel")) { + qmp_session_destroy(qret->session); + } g_idle_add(cmd_async_idle, qret); } =20 @@ -453,6 +465,30 @@ static void test_qmp_return_async(void) qobject_unref(req); } =20 +static void test_qmp_return_async_cancel(void) +{ + QmpReturnAsync a =3D { { 0, }, }; + QDict *args =3D qdict_new(); + QDict *req =3D qdict_new(); + + a.loop =3D g_main_loop_new(NULL, TRUE); + qmp_session_init(&a.session, &qmp_commands, + NULL, dispatch_return_async); + + qdict_put_str(args, "filename", "cancel"); + qdict_put_str(req, "execute", "cmd-async"); + qdict_put(req, "arguments", args); + qmp_dispatch(&a.session, QOBJECT(req), false); + g_assert(a.loop); + + loop =3D a.loop; + g_main_loop_run(loop); + g_assert(!loop); + + qmp_session_destroy(&a.session); + qobject_unref(req); +} + int main(int argc, char **argv) { g_test_init(&argc, &argv, NULL); @@ -467,6 +503,7 @@ int main(int argc, char **argv) g_test_add_func("/qmp/dealloc_partial", test_dealloc_partial); g_test_add_func("/qmp/return_orderly", test_qmp_return_orderly); g_test_add_func("/qmp/return_async", test_qmp_return_async); + g_test_add_func("/qmp/return_async_cancel", test_qmp_return_async_canc= el); =20 test_qmp_init_marshal(&qmp_commands); g_test_run(); --=20 2.24.0