From patchwork Mon Nov 6 09:46:26 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Xu X-Patchwork-Id: 834564 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3yVp4m2ghVz9s7c for ; Mon, 6 Nov 2017 21:02:00 +1100 (AEDT) Received: from localhost ([::1]:47240 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eBeEA-0007X1-A3 for incoming@patchwork.ozlabs.org; Mon, 06 Nov 2017 05:01:58 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48572) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eBe1o-00052q-7m for qemu-devel@nongnu.org; Mon, 06 Nov 2017 04:49:13 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eBe1l-0004TS-Tg for qemu-devel@nongnu.org; Mon, 06 Nov 2017 04:49:12 -0500 Received: from mx1.redhat.com ([209.132.183.28]:44030) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eBe1l-0004Su-L4 for qemu-devel@nongnu.org; Mon, 06 Nov 2017 04:49:09 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A5BBD7E42C; Mon, 6 Nov 2017 09:49:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com A5BBD7E42C Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=peterx@redhat.com Received: from pxdev.xzpeter.org.com (ovpn-12-165.pek2.redhat.com [10.72.12.165]) by smtp.corp.redhat.com (Postfix) with ESMTP id E042160BED; Mon, 6 Nov 2017 09:49:00 +0000 (UTC) From: Peter Xu To: qemu-devel@nongnu.org Date: Mon, 6 Nov 2017 17:46:26 +0800 Message-Id: <20171106094643.14881-11-peterx@redhat.com> In-Reply-To: <20171106094643.14881-1-peterx@redhat.com> References: <20171106094643.14881-1-peterx@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Mon, 06 Nov 2017 09:49:08 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [RFC v3 10/27] monitor: create monitor dedicate iothread 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: Laurent Vivier , Fam Zheng , Juan Quintela , mdroth@linux.vnet.ibm.com, peterx@redhat.com, Markus Armbruster , marcandre.lureau@redhat.com, Stefan Hajnoczi , Paolo Bonzini , Jiri Denemark , "Dr . David Alan Gilbert" Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Create one IOThread for the monitors, prepared to handle all the input/output IOs using existing iothread framework. Signed-off-by: Peter Xu --- monitor.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/monitor.c b/monitor.c index a70ab5606b..df1ec8d037 100644 --- a/monitor.c +++ b/monitor.c @@ -76,6 +76,7 @@ #include "qmp-introspect.h" #include "sysemu/qtest.h" #include "sysemu/cpus.h" +#include "sysemu/iothread.h" #include "qemu/cutils.h" #include "qapi/qmp/dispatch.h" @@ -208,6 +209,12 @@ struct Monitor { QTAILQ_ENTRY(Monitor) entry; }; +struct MonitorGlobal { + IOThread *mon_iothread; +}; + +static struct MonitorGlobal mon_global; + /* QMP checker flags */ #define QMP_ACCEPT_UNKNOWNS 1 @@ -4034,12 +4041,29 @@ static void sortcmdlist(void) qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd); } +static GMainContext *monitor_io_context_get(void) +{ + return iothread_get_g_main_context(mon_global.mon_iothread); +} + +static void monitor_iothread_init(void) +{ + mon_global.mon_iothread = iothread_create("monitor_iothread", + &error_abort); + /* + * GContext in iothread is using lazy init - the first time we + * fetch the context we'll have that initialized. + */ + monitor_io_context_get(); +} + void monitor_init_globals(void) { monitor_init_qmp_commands(); monitor_qapi_event_init(); sortcmdlist(); qemu_mutex_init(&monitor_lock); + monitor_iothread_init(); } /* These functions just adapt the readline interface in a typesafe way. We @@ -4117,6 +4141,13 @@ void monitor_cleanup(void) { Monitor *mon, *next; + /* + * We need to explicitly stop the iothread (but not destroy it), + * cleanup the monitor resources, then destroy the iothread. See + * again on the glib bug mentioned in 2b316774f6 for a reason. + */ + iothread_stop(mon_global.mon_iothread); + qemu_mutex_lock(&monitor_lock); QTAILQ_FOREACH_SAFE(mon, &mon_list, entry, next) { QTAILQ_REMOVE(&mon_list, mon, entry); @@ -4124,6 +4155,9 @@ void monitor_cleanup(void) g_free(mon); } qemu_mutex_unlock(&monitor_lock); + + iothread_destroy(mon_global.mon_iothread); + mon_global.mon_iothread = NULL; } QemuOptsList qemu_mon_opts = {