Fix multi process contention for the DBusName in VNC environment
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tanyulong2021
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75249d1504
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1c73bc2fa9
149
0002-Fix-multi-process-contention-for-the-DBusName-in-VNC.patch
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149
0002-Fix-multi-process-contention-for-the-DBusName-in-VNC.patch
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@ -0,0 +1,149 @@
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From 4b61607094dc9a9f95e4c83f72ba9a67d99519c4 Mon Sep 17 00:00:00 2001
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From: tanyulong <tanyulong@kylinos.cn>
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Date: Sat, 31 Jul 2021 09:56:25 +0800
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Subject: [PATCH] Fix multi process contention for the DBusName in VNC
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environment
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---
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src/main.cpp | 59 ++++++++++++++++++++++++++++++++++++++------
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src/ukws_common.h | 4 +++
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src/ukws_manager.cpp | 20 +++++++++------
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3 files changed, 69 insertions(+), 14 deletions(-)
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diff --git a/src/main.cpp b/src/main.cpp
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index ae0442f..4f02dc0 100755
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--- a/src/main.cpp
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+++ b/src/main.cpp
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@@ -37,6 +37,7 @@
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#include <QCommandLineOption>
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#include <QCommandLineParser>
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#include <QStyleFactory>
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+#include <QProcess>
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#include <stdio.h>
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#include <sys/file.h>
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@@ -161,18 +162,62 @@ void msgHandler(QtMsgType type, const QMessageLogContext& context, const QString
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abort();
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}
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+bool startUkws(QString serviceName) {
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+ bool dbusIsReady = false;
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+
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+ QProcess *newUkws = new QProcess();
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+ newUkws->setProgram("/usr/bin/ukui-window-switch");
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+ newUkws->setStandardOutputFile("/dev/null");
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+ newUkws->setStandardErrorFile("/dev/null");
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+ newUkws->startDetached();
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+
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+ QTime curTime = QTime::currentTime();
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+ curTime.start();
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+
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+ while (curTime.elapsed() < 1100) {
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+ QDBusInterface interface(serviceName, UKWS_DBUS_PATH, UKWS_DBUS_INTERFACE,
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+ QDBusConnection::sessionBus());
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+ if (!interface.isValid()) {
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+ usleep(250 * 1000);
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+ } else {
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+ dbusIsReady = true;
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+ break;
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+ }
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+ }
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+
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+ if (dbusIsReady) {
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+ qInfo() << "ukui-window-switch is started";
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+ return true;
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+ } else {
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+ qInfo() << "ukui-window-switch start failed";
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+ return false;
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+ }
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+
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+ return false;
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+}
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+
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void handleWorkspaceView()
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{
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- QString object = QString(getenv("DISPLAY"));
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- object = object.trimmed().replace(":", "_").replace(".", "_").replace("-", "_");
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- object = "/org/ukui/WindowSwitch/display/" + object;
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- QDBusInterface interface("org.ukui.WindowSwitch", object,
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- "org.ukui.WindowSwitch",
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+ // 根据当前的DISPLAY环境变量构造单独的DBus Name
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+ QString serviceName = QString(getenv("DISPLAY"));
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+ serviceName = serviceName.trimmed().replace(":", "_").replace(".", "_").replace("-", "_");
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+ if (!serviceName.isEmpty())
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+ serviceName = QString(UKWS_DBUS_NAME_PREFIX) + "." + serviceName;
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+ else
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+ serviceName = UKWS_DBUS_NAME_PREFIX;
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+ qDebug() << "Access DBus:" << serviceName;
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+
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+ QDBusInterface interface(serviceName, UKWS_DBUS_PATH, UKWS_DBUS_INTERFACE,
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QDBusConnection::sessionBus());
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if (!interface.isValid()) {
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- qCritical() << QDBusConnection::sessionBus().lastError().message();
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- exit(1);
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+ qDebug() << QDBusConnection::sessionBus().lastError().message();
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+ qInfo() << "Try to start ukui-window-switch";
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+ if (!startUkws(serviceName)) {
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+ qCritical() << "Start ukui-window-switch failed";
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+ exit(1);
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+ }
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}
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+
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//调用远程的value方法
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QDBusReply<bool> reply = interface.call("handleWorkspace");
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if (reply.isValid()) {
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diff --git a/src/ukws_common.h b/src/ukws_common.h
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index f3631ef..39c660d 100755
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--- a/src/ukws_common.h
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+++ b/src/ukws_common.h
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@@ -34,6 +34,10 @@
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#define UKWS_OBJ_NEW_WS_TITLE "new-workspace-title"
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#define UKWS_OBJ_NEW_WS_LABEL "new-workspace-label"
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+#define UKWS_DBUS_NAME_PREFIX "org.ukui.WindowSwitch.Display"
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+#define UKWS_DBUS_PATH "/org/ukui/WindowSwitch"
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+#define UKWS_DBUS_INTERFACE "org.ukui.WindowSwitch"
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+
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enum UkwsWidgetShowStatus {
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Hidden = 0,
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Shown,
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diff --git a/src/ukws_manager.cpp b/src/ukws_manager.cpp
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index e9cffe3..ecd4f1e 100755
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--- a/src/ukws_manager.cpp
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+++ b/src/ukws_manager.cpp
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@@ -92,19 +92,25 @@ UkwsManager::UkwsManager(QWidget *parent) : QWidget(parent)
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connect(ws, &UkwsWorkspaceManager::isHidden, this, &UkwsManager::hideWorkspace);
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// connect(altChecker, &UkwsAltChecker::altReleased, this, &UkwsManager::hideIndicator);
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+ // 根据当前的DISPLAY环境变量构造单独的DBus Name
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+ QString serviceName = QString(getenv("DISPLAY"));
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+ serviceName = serviceName.trimmed().replace(":", "_").replace(".", "_").replace("-", "_");
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+ if (!serviceName.isEmpty())
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+ serviceName = QString(UKWS_DBUS_NAME_PREFIX) + "." + serviceName;
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+ else
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+ serviceName = UKWS_DBUS_NAME_PREFIX;
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+ qDebug() << "Register DBus Name:" << serviceName;
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+
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+
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// 连接session总线
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QDBusConnection connection = QDBusConnection::sessionBus();
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// 在session总线上为UKWS注册服务
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- if(!connection.registerService("org.ukui.WindowSwitch")) {
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+ if(!connection.registerService(serviceName)) {
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qCritical() << "Register DBus Service Error:" << connection.lastError().message();
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}
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- // 注册org.ukui.WindowSwitch服务的object，把UkwsManager类的所有公共槽函数导出为object的method
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- QString object = QString(getenv("DISPLAY"));
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- object = object.trimmed().replace(":", "_").replace(".", "_").replace("-", "_");
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- object = "/org/ukui/WindowSwitch/display/" + object;
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- qDebug() << "Register DBus:" << object;
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- connection.registerObject(object, this, QDBusConnection::ExportAllSlots);
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+ connection.registerObject(UKWS_DBUS_PATH, UKWS_DBUS_INTERFACE,
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+ this, QDBusConnection::ExportAllSlots);
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}
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void UkwsManager::setConfig(UkwsConfig *config)
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--
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2.23.0
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@ -1,12 +1,13 @@
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%define debug_package %{nil}
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Name: ukui-window-switch
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Version: 3.0.1
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Release: 2
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Release: 3
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Summary: Front of the window switch
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License: GPL-2+ BSD-2-clause BSD-3-clause and GPL-2+
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URL: http://www.ukui.org
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Source0: %{name}-%{version}.tar.gz
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patch0: 0001-fix-template-with-C-linkage-error.patch
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patch1: 0002-Fix-multi-process-contention-for-the-DBusName-in-VNC.patch
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BuildRequires: qt5-qtbase-devel
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BuildRequires: libblkid-devel
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@ -27,6 +28,7 @@ Requires: ukwm >= 1.1.0
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%prep
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%setup -q
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%patch0 -p1
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%patch1 -p1
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%build
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qmake-qt5
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@ -46,6 +48,9 @@ rm -rf $RPM_BUILD_ROOT
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%{_datadir}/ukui-window-switch/
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%changelog
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* Sat Jul 31 2021 tanyulong <tanyulong@kylinos.cn> - 3.0.1-3
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- Fix multi process contention for the DBusName in VNC environment
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* Tue Jul 29 2021 tanyulong <tanyulong@kylinos.cn> - 3.0.1-2
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- fix template with C linkage error
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