From patchwork Thu Sep 16 20:20:49 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Capitulino X-Patchwork-Id: 64997 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 171B3B70F2 for ; Fri, 17 Sep 2010 06:24:58 +1000 (EST) Received: from localhost ([127.0.0.1]:51742 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OwL0o-0002G0-Ox for incoming@patchwork.ozlabs.org; Thu, 16 Sep 2010 16:24:54 -0400 Received: from [140.186.70.92] (port=39494 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OwKxL-0000RN-3P for qemu-devel@nongnu.org; Thu, 16 Sep 2010 16:21:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OwKxJ-0001Nz-CT for qemu-devel@nongnu.org; Thu, 16 Sep 2010 16:21:18 -0400 Received: from mx1.redhat.com ([209.132.183.28]:61296) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OwKxJ-0001Nk-6U for qemu-devel@nongnu.org; Thu, 16 Sep 2010 16:21:17 -0400 Received: from int-mx08.intmail.prod.int.phx2.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o8GKLGaI023092 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 16 Sep 2010 16:21:16 -0400 Received: from localhost ([10.3.113.6]) by int-mx08.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o8GKLFT9009885; Thu, 16 Sep 2010 16:21:15 -0400 From: Luiz Capitulino To: qemu-devel@nongnu.org Date: Thu, 16 Sep 2010 17:20:49 -0300 Message-Id: <1284668464-15981-4-git-send-email-lcapitulino@redhat.com> In-Reply-To: <1284668464-15981-1-git-send-email-lcapitulino@redhat.com> References: <1284668464-15981-1-git-send-email-lcapitulino@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.21 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. Cc: aliguori@us.ibm.com, armbru@redhat.com Subject: [Qemu-devel] [PATCH 03/18] QMP: Don't use do_info() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Since its inception, QMP has been using HMP's do_info() function to run query commands. This was a bad choice, as it made do_info() more complex and contributed to couple QMP and HMP. This commit fixes that by doing the following changes: 1. Introduce qmp_find_query_cmd() and use it to directly lookup the info_cmds table 2. Introduce qmp_call_query_cmd() so that QMP code is able to call query handlers without using do_info() 3. Drop do_info() usage We need all the three changes in one shot so that we don't break the calling of query commands in QMP. Signed-off-by: Luiz Capitulino --- monitor.c | 39 +++++++++++++++++++++++++++++++-------- 1 files changed, 31 insertions(+), 8 deletions(-) diff --git a/monitor.c b/monitor.c index b2d8a2d..0ddc826 100644 --- a/monitor.c +++ b/monitor.c @@ -3387,6 +3387,11 @@ static const mon_cmd_t *monitor_find_command(const char *cmdname) return find_dispatch_table(mon_cmds, cmdname); } +static const mon_cmd_t *qmp_find_query_cmd(const char *info_item) +{ + return find_dispatch_table(info_cmds, info_item); +} + static const mon_cmd_t *monitor_parse_command(Monitor *mon, const char *cmdline, QDict *qdict) @@ -4326,6 +4331,24 @@ static QDict *qmp_check_input_obj(QObject *input_obj) return input_dict; } +static void qmp_call_query_cmd(Monitor *mon, const mon_cmd_t *cmd) +{ + QObject *ret_data = NULL; + + if (monitor_handler_is_async(cmd)) { + qmp_async_info_handler(mon, cmd); + if (monitor_has_error(mon)) { + monitor_protocol_emitter(mon, NULL); + } + } else { + cmd->mhandler.info_new(mon, &ret_data); + if (ret_data) { + monitor_protocol_emitter(mon, ret_data); + qobject_decref(ret_data); + } + } +} + static void handle_qmp_command(JSONMessageParser *parser, QList *tokens) { int err; @@ -4333,8 +4356,9 @@ static void handle_qmp_command(JSONMessageParser *parser, QList *tokens) QDict *input, *args; const mon_cmd_t *cmd; Monitor *mon = cur_mon; - const char *cmd_name, *info_item; + const char *cmd_name, *query_cmd; + query_cmd = NULL; args = input = NULL; obj = json_parser_parse(tokens, NULL); @@ -4360,16 +4384,13 @@ static void handle_qmp_command(JSONMessageParser *parser, QList *tokens) } /* - * XXX: We need this special case until we get info handlers - * converted into 'query-' commands + * XXX: We need this special case until QMP has its own dispatch table */ if (compare_cmd(cmd_name, "info")) { qerror_report(QERR_COMMAND_NOT_FOUND, cmd_name); goto err_out; - } else if (strstart(cmd_name, "query-", &info_item)) { - cmd = monitor_find_command("info"); - qdict_put_obj(input, "arguments", - qobject_from_jsonf("{ 'item': %s }", info_item)); + } else if (strstart(cmd_name, "query-", &query_cmd)) { + cmd = qmp_find_query_cmd(query_cmd); } else { cmd = monitor_find_command(cmd_name); } @@ -4392,7 +4413,9 @@ static void handle_qmp_command(JSONMessageParser *parser, QList *tokens) goto err_out; } - if (monitor_handler_is_async(cmd)) { + if (query_cmd) { + qmp_call_query_cmd(mon, cmd); + } else if (monitor_handler_is_async(cmd)) { err = qmp_async_cmd_handler(mon, cmd, args); if (err) { /* emit the error response */