p96705831
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quarkai
forked from openkylin/quarkai
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add qtsingleapplication

This commit is contained in:
李 翔 2017-12-22 18:03:28 +08:00
parent 9af8d22424
commit a651459416
27 changed files with 1779 additions and 169 deletions
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14
dbusproxy/youkersystemdbus.cpp
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@ -46,7 +46,7 @@ SystemDispatcher::~SystemDispatcher() {
clean_thread = NULL; clean_thread = NULL;
} }
qDebug() << "system dbus destroy..............";
this->exit_qt(); this->exit_qt();
if (systemiface != NULL) { if (systemiface != NULL) {
delete systemiface; delete systemiface;
@ -61,16 +61,18 @@ void SystemDispatcher::initData()
"com.kylin.assistant.systemdaemon", "com.kylin.assistant.systemdaemon",
QDBusConnection::systemBus()); QDBusConnection::systemBus());
QObject::connect(systemiface,SIGNAL(quit_clean(bool)),this,SLOT(handler_interrupt_clean(bool))); QObject::connect(systemiface,SIGNAL(quit_clean(bool)),this,SLOT(handler_interrupt_clean(bool))/*, Qt::QueuedConnection*/);
QObject::connect(systemiface,SIGNAL(clean_complete_onekey(QString)),this,SLOT(handler_clear_rubbish_main_onekey(QString)));
QObject::connect(systemiface,SIGNAL(clean_error_onekey(QString)),this,SLOT(handler_clear_rubbish_main_error(QString))); QObject::connect(systemiface,SIGNAL(clean_complete_onekey(QString)),this,SLOT(handler_clear_rubbish_main_onekey(QString))/*, Qt::QueuedConnection*/);
QObject::connect(systemiface,SIGNAL(status_for_quick_clean(QString,QString)),this,SLOT(handler_status_for_quick_clean(QString,QString)));
QObject::connect(systemiface,SIGNAL(clean_error_onekey(QString)),this,SLOT(handler_clear_rubbish_main_error(QString))/*, Qt::QueuedConnection*/);
QObject::connect(systemiface,SIGNAL(status_for_quick_clean(QString,QString)),this,SLOT(handler_status_for_quick_clean(QString,QString))/*, Qt::QueuedConnection*/);
QObject::connect(systemiface,SIGNAL(subpage_data_signal(QStringList)),this,SLOT(handlerCleanerSubPageDataSignal(QStringList))); QObject::connect(systemiface,SIGNAL(subpage_data_signal(QStringList)),this,SLOT(handlerCleanerSubPageDataSignal(QStringList)));
QObject::connect(systemiface,SIGNAL(subpage_status_signal(QString, QString)),this,SLOT(handlerCleanerSubPageStatusSignal(QString, QString))); QObject::connect(systemiface,SIGNAL(subpage_status_signal(QString, QString)),this,SLOT(handlerCleanerSubPageStatusSignal(QString, QString)));
QObject::connect(systemiface,SIGNAL(subpage_error_signal(QString)),this,SLOT(handlerCleanerSubPageErrorSignal(QString))); QObject::connect(systemiface,SIGNAL(subpage_error_signal(QString)),this,SLOT(handlerCleanerSubPageErrorSignal(QString)));
QObject::connect(systemiface,SIGNAL(youker_fetch_signal(QString, QStringList)),this,SIGNAL(get_fetch_signal(QString, QStringList))); QObject::connect(systemiface,SIGNAL(youker_fetch_signal(QString, QStringList)),this,SIGNAL(get_fetch_signal(QString, QStringList)));
QObject::connect(systemiface,SIGNAL(youker_apt_signal(QString, QStringList)),this,SIGNAL(get_apt_signal(QString, QStringList))); QObject::connect(systemiface,SIGNAL(youker_apt_signal(QString, QStringList)),this,SIGNAL(get_apt_signal(QString, QStringList)));
// QObject::connect(systemiface,SIGNAL(youker_fetch_signal(QString, QStringList)),this,SLOT(handlerFetchSignal(QString, QStringList))); // QObject::connect(systemiface,SIGNAL(youker_fetch_signal(QString, QStringList)),this,SLOT(handlerFetchSignal(QString, QStringList)));

2
debian/changelog vendored
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@ -2,6 +2,6 @@ kylin-assistant (1.0.0-0ubuntu1) bionic; urgency=low
* fork youker-assistant(commit:764) * fork youker-assistant(commit:764)
* upgrade from Qt4 to Qt5. * upgrade from Qt4 to Qt5.
* hebing first join in * add qtsingleapplication.
-- lixiang <lixiang@kylinos.cn> Thu, 21 Dec 2017 14:52:56 +0800 -- lixiang <lixiang@kylinos.cn> Thu, 21 Dec 2017 14:52:56 +0800

1
kylin-assistant.pro
View File

@ -2,6 +2,7 @@ TEMPLATE = subdirs
SUBDIRS = \ SUBDIRS = \
src \ src \
shredmanager \ shredmanager \
processmanager \
backends backends
TRANSLATIONS += \ TRANSLATIONS += \

1
processmanager/process.json Normal file
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@ -0,0 +1 @@
{}

5
processmanager/processdialog.cpp
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@ -26,6 +26,7 @@
#include <QDir> #include <QDir>
#include <QProcess> #include <QProcess>
#include <QDebug> #include <QDebug>
#include <QHeaderView>
//pkg-config --cflags libgtop-2.0 //pkg-config --cflags libgtop-2.0
//pkg-config --libs glib-2.0 libgtop-2.0 //pkg-config --libs glib-2.0 libgtop-2.0
@ -38,7 +39,7 @@ ProcessDialog::ProcessDialog(ProcessManager *plugin, QDialog *parent)
this->setWindowIcon(QIcon(":/res/youker-assistant.png")); this->setWindowIcon(QIcon(":/res/youker-assistant.png"));
title_bar = new KylinTitleBar(); title_bar = new KylinTitleBar();
proSettings = new QSettings(YOUKER_COMPANY_SETTING, YOUKER_SETTING_FILE_NAME_SETTING); proSettings = new QSettings(KYLIN_COMPANY_SETTING, KYLIN_SETTING_FILE_NAME_SETTING);
proSettings->setIniCodec("UTF-8"); proSettings->setIniCodec("UTF-8");
initTitleBar(); initTitleBar();
@ -255,7 +256,9 @@ void ProcessDialog::showProList() {
columnHeaderItem8->setTextColor(QColor(200,111,30)); columnHeaderItem8->setTextColor(QColor(200,111,30));
//表头设置 //表头设置
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
tableWidget->horizontalHeader()->setClickable(false); tableWidget->horizontalHeader()->setClickable(false);
#endif
tableWidget->horizontalHeader()->resizeSection(0,150); tableWidget->horizontalHeader()->resizeSection(0,150);
tableWidget->horizontalHeader()->resizeSection(1,80); tableWidget->horizontalHeader()->resizeSection(1,80);
tableWidget->horizontalHeader()->resizeSection(2,50); tableWidget->horizontalHeader()->resizeSection(2,50);

4
processmanager/processmanager.cpp
View File

@ -19,6 +19,8 @@
#include "processmanager.h" #include "processmanager.h"
#include <QDebug> #include <QDebug>
#include <QApplication>
#include <QDesktopWidget>
ProcessManager::ProcessManager(QObject *parent) ProcessManager::ProcessManager(QObject *parent)
:QObject(parent), process_dialog(this) :QObject(parent), process_dialog(this)
@ -60,4 +62,6 @@ void ProcessManager::doAction()
process_dialog.raise(); process_dialog.raise();
} }
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
Q_EXPORT_PLUGIN2(ProcessManager, ProcessManager) Q_EXPORT_PLUGIN2(ProcessManager, ProcessManager)
#endif

4
processmanager/processmanager.h
View File

@ -28,6 +28,10 @@ class ProcessManager : public QObject , PluginInterface
Q_OBJECT Q_OBJECT
Q_INTERFACES(PluginInterface) Q_INTERFACES(PluginInterface)
#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
Q_PLUGIN_METADATA(IID "com.ubuntukylin.Plugin.PluginInterface" FILE "process.json")//指定IID和.json文件
#endif
public: public:
ProcessManager(QObject* parent = 0); ProcessManager(QObject* parent = 0);
virtual ~ProcessManager(); virtual ~ProcessManager();

13
processmanager/processmanager.pro
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@ -4,16 +4,15 @@
# #
#------------------------------------------------- #-------------------------------------------------
QT += core gui isEqual(QT_MAJOR_VERSION, 5) {
QT += widgets gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets }
TARGET = processmanager TARGET = processmanager
TEMPLATE = lib TEMPLATE = lib
CONFIG += plugin
INCLUDEPATH += ../processmanager INCLUDEPATH += ../processmanager
DESTDIR = ../libs DESTDIR = ../libs
CONFIG += link_pkgconfig CONFIG += plugin c++11 link_pkgconfig
PKGCONFIG += libgtop-2.0 PKGCONFIG += libgtop-2.0
UI_DIR += $$PWD/../tmp/processmanager/ UI_DIR += $$PWD/../tmp/processmanager/
@ -26,7 +25,7 @@ OBJECTS_DIR = $$PWD/../obj/processmanager
target.source += $$TARGET target.source += $$TARGET
target.path = /var/lib/youker-assistant-daemon/libs/ target.path = /var/lib/kylin-assistant-daemon/libs/
INSTALLS +=target INSTALLS +=target
HEADERS += \ HEADERS += \
@ -58,4 +57,4 @@ FORMS += \
../component/alertdialog.ui ../component/alertdialog.ui
RESOURCES += \ RESOURCES += \
../mainui/img.qrc ../src/img.qrc

6
shredmanager/shredmanager.pro
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@ -4,9 +4,9 @@
# #
#------------------------------------------------- #-------------------------------------------------
QT += core gui isEqual(QT_MAJOR_VERSION, 5) {
QT += widgets gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets }
TARGET = shredmanager TARGET = shredmanager
TEMPLATE = lib TEMPLATE = lib

44
src/kpplication.h Normal file
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@ -0,0 +1,44 @@
/*
* Copyright (C) 2013 ~ 2017 National University of Defense Technology(NUDT) & Tianjin Kylin Ltd.
*
* Authors:
* Kobe Lee xiangli@ubuntukylin.com/kobe24_lixiang@126.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KPPLICATION_H
#define KPPLICATION_H
#include <QtGlobal>
#include "QtSingleApplication"
class Kpplication : public QtSingleApplication
{
Q_OBJECT
public:
Kpplication ( const QString & appId, int & argc, char ** argv )
: QtSingleApplication(appId, argc, argv) {};
// virtual void commitData ( QSessionManager & /*manager*/ ) {
// // Nothing to do, let the application to close
// }
inline static Kpplication * instance() {
return qobject_cast<Kpplication*>(QApplication::instance());
}
};
#endif // KPPLICATION_H

238
src/main.cpp
View File

@ -18,6 +18,7 @@
*/ */
#include "mainwindow.h" #include "mainwindow.h"
#include "kpplication.h"
#include <QApplication> #include <QApplication>
#include <QTextCodec> #include <QTextCodec>
#include <QTranslator> #include <QTranslator>
@ -32,6 +33,7 @@
#include <fcntl.h> #include <fcntl.h>
#include <errno.h> #include <errno.h>
#include <pwd.h> #include <pwd.h>
#include <signal.h>
#define BUFF_SIZE (512) #define BUFF_SIZE (512)
char filePath[BUFF_SIZE] = {0}; char filePath[BUFF_SIZE] = {0};
@ -115,19 +117,35 @@ int make_pid_file() {
bool registerSingleInstance(const QString &path)
{
QString dbusName = QString("com.kylin.assistant-single-instance.%1").arg(path);
auto sessionBus = QDBusConnection::sessionBus();
if (!sessionBus.registerService(dbusName)) {
qDebug() << "Register single dbus service failed:" << sessionBus.lastError();
return false;
}
return true;
}
//void sig_int(int signal)
//{
// QApplication::quit();
//}
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
QApplication app(argc, argv); // QApplication app(argc, argv);
Kpplication app("kylin-assistant", argc, argv);
app.setQuitOnLastWindowClosed(false);
app.setOrganizationName("kylin"); app.setOrganizationName("kylin");
app.setApplicationName("kylin-assistant"); app.setApplicationName("kylin-assistant");
app.setApplicationVersion("1.0.0"); app.setApplicationVersion("1.0.0");
//单程序运行处理 Kpplication *app_ins = Kpplication::instance();
QSharedMemory mem("KA"); if (app_ins->isRunning()) {
if (!mem.create(1)) { app_ins->sendMessage("Hello");
qDebug() << QObject::tr("kylin-assistant had already running!");
return 1; return 1;
} }
@ -137,18 +155,28 @@ int main(int argc, char *argv[])
qDebug() << "debug mode"; qDebug() << "debug mode";
#endif #endif
//单程序运行处理
// QSharedMemory mem("KA");
// if (!mem.create(1)) {
// qDebug() << QObject::tr("kylin-assistant had already running!");
// return 1;
// }
/*const QString socketPath(QString("kylin-assistant_%1").arg(getuid()));
if (registerSingleInstance(socketPath)) {*/
#if (QT_VERSION <= QT_VERSION_CHECK(5,0,0)) #if (QT_VERSION <= QT_VERSION_CHECK(5,0,0))
QTextCodec::setCodecForTr(QTextCodec::codecForLocale()); QTextCodec::setCodecForTr(QTextCodec::codecForLocale());
QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale()); QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale());
QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8")); QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8")); QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
#endif #endif
if (make_pid_file()) { // signal(SIGINT, sig_int);
exit(1);
}
QString arch = ""; // if (make_pid_file()) {
// exit(1);
// }
QString arch = "";
#ifdef __x86_64__ #ifdef __x86_64__
arch = "x86_64"; arch = "x86_64";
@ -158,149 +186,63 @@ int main(int argc, char *argv[])
arch = "aarch64"; arch = "aarch64";
#endif #endif
QString locale = QLocale::system().name(); QString locale = QLocale::system().name();
QTranslator translator; QTranslator translator;
if(locale == "zh_CN" || locale == "es" || locale == "fr" || locale == "de" || locale == "ru") {//中文 西班牙语 法语 德语 俄语 if(locale == "zh_CN" || locale == "es" || locale == "fr" || locale == "de" || locale == "ru") {//中文 西班牙语 法语 德语 俄语
if(!translator.load("kylin-assistant_" + locale + ".qm", if(!translator.load("kylin-assistant_" + locale + ".qm",
":/qmfile/translation/")) ":/qmfile/translation/"))
qDebug() << "Load translation file："<< "kylin-assistant_" + locale + ".qm" << " failed!"; qDebug() << "Load translation file："<< "kylin-assistant_" + locale + ".qm" << " failed!";
else else
app.installTranslator(&translator); app.installTranslator(&translator);
} }
//加载Qt对话框默认的国际化 //加载Qt对话框默认的国际化
QTranslator qtTranslator; QTranslator qtTranslator;
qtTranslator.load("qt_" + locale, qtTranslator.load("qt_" + locale,
QLibraryInfo::location(QLibraryInfo::TranslationsPath)); QLibraryInfo::location(QLibraryInfo::TranslationsPath));
app.installTranslator(&qtTranslator); app.installTranslator(&qtTranslator);
QFile qss(":/qssfile/res/qss/kylin-assistant.qss"); QFile qss(":/qssfile/res/qss/kylin-assistant.qss");
qss.open(QFile::ReadOnly); qss.open(QFile::ReadOnly);
qApp->setStyleSheet(qss.readAll()); qApp->setStyleSheet(qss.readAll());
qss.close(); qss.close();
QDesktopWidget *desktop = QApplication::desktop(); QDesktopWidget *desktop = QApplication::desktop();
// qDebug() << desktop->primaryScreen();//获取主屏幕的索引序号 // qDebug() << desktop->primaryScreen();//获取主屏幕的索引序号
int sCount = desktop->screenCount();//获取当前显示器的个数 int sCount = desktop->screenCount();//获取当前显示器的个数
// qDebug() << sCount; // qDebug() << sCount;
//如果有两个显示，则N=2，qt默认的计算机主机的index = 0，外接显示器的index = 1； //如果有两个显示，则N=2，qt默认的计算机主机的index = 0，外接显示器的index = 1；
// mdlg.setGeometry(desktop->screenGeometry(1));//QDialog 有个成员函数叫setGeometry，只需要将dialog对象的Geometry设置为index为1的显示器即可，默认为0.如果要显示的dialog的对象为mdlg，则 // mdlg.setGeometry(desktop->screenGeometry(1));//QDialog 有个成员函数叫setGeometry，只需要将dialog对象的Geometry设置为index为1的显示器即可，默认为0.如果要显示的dialog的对象为mdlg，则
// mdlg.show(); // mdlg.show();
//启动图片 //启动图片
/*QPixmap pixmap("://res/skin/x.png"); /*QPixmap pixmap("://res/skin/x.png");
QSplashScreen screen(pixmap); QSplashScreen screen(pixmap);
screen.show(); screen.show();
screen.showMessage("START...", Qt::AlignCenter, Qt::white);*/ screen.showMessage("START...", Qt::AlignCenter, Qt::white);*/
MainWindow w(arch, sCount); MainWindow w(arch, sCount);
/*#if 0 /*#if 0
//延时 //延时
int delayTime = 3; int delayTime = 3;
QElapsedTimer timer; QElapsedTimer timer;
timer.start(); timer.start();
while (timer.elapsed() < (delayTime * 1000)) { while (timer.elapsed() < (delayTime * 1000)) {
app.processEvents(); app.processEvents();
} }
screen.finish(&w); screen.finish(&w);
#endif*/ #endif*/
w.setTranslator(&translator); w.setTranslator(&translator);
// if (sCount > 1) {
// w.setGeometry(desktop->screenGeometry(1));
// }
// w.display(sCount);
return app.exec();
//}
// if (sCount > 1) { //return 0;
// w.setGeometry(desktop->screenGeometry(1));
// }
// w.display(sCount);
return app.exec();
} }
/*
测试多屏（只测了横屏，没测试纵屏）： 根据当前屏幕数量n，生成n个窗口，每个窗口都占据了一个屏幕
#include "mainwindow.h"
#include <QApplication>
#include <QDesktopWidget>
#include <cstdio>
#include <QMessageBox>
typedef struct{
int screen_no;
QRect rect;
}SCREEN;
SCREEN g_screens[10];
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QDesktopWidget *desktop = QApplication::desktop();
int screen_count = desktop->screenCount();
int prim_screen = desktop->primaryScreen();
char warning[100], *idx=warning;
for(int i=0; i<screen_count ;i++ ){
g_screens[i].screen_no = prim_screen + i;
g_screens[i].rect = desktop->screenGeometry(prim_screen + i);
sprintf(idx, "screen%d w[%d], h[%d] ",i, g_screens[i].rect.width(),g_screens[i].rect.height() );
idx += strlen(idx);
}
sprintf(idx, "total width[%d] , total height[%d] \n", desktop->width(), desktop->height() );
QMessageBox::warning(NULL, "screen", warning, QMessageBox::Ok);
MainWindow wnd[5];
for(int i=0; i < screen_count; i++){
wnd[i].resize(g_screens[i].rect.width(),g_screens[i].rect.height());
if(i == 0)
wnd[i].move(0,0);
else
wnd[i].move(i* g_screens[i-1].rect.width(),0);
char str[50];
sprintf(str,"this is screen %d",i);
wnd[i].show();
}
return app.exec();
}
* */

8
src/mainwindow.cpp
View File

@ -256,6 +256,7 @@ MainWindow::~MainWindow()
// delete systeminterface; // delete systeminterface;
// systeminterface = NULL; // systeminterface = NULL;
// } // }
qDebug() << "mainwindow destroy...............";
if (sessioninterface) { if (sessioninterface) {
sessioninterface->deleteLater(); sessioninterface->deleteLater();
} }
@ -622,6 +623,7 @@ void MainWindow::changeLanguage(LANGUAGE language)
void MainWindow::displayMainWindow(/*int count*/) void MainWindow::displayMainWindow(/*int count*/)
{ {
qDebug() << "displayMainWindow============";
this->battery = sessioninterface->judge_power_is_exists_qt(); this->battery = sessioninterface->judge_power_is_exists_qt();
this->sensor = systeminterface->judge_sensors_exists_qt(); this->sensor = systeminterface->judge_sensors_exists_qt();
login_widget->setSessionDbusProxy(sessioninterface); login_widget->setSessionDbusProxy(sessioninterface);
@ -704,7 +706,7 @@ void MainWindow::startDbusDaemon()
// connect(systeminterface, &SystemDispatcher::dbusInitFinished, this, [=] {dlg.close();this->displayMainWindow(); // connect(systeminterface, &SystemDispatcher::dbusInitFinished, this, [=] {dlg.close();this->displayMainWindow();
// }); // });
connect(systeminterface, SIGNAL(dbusInitFinished()), this, SLOT(displayMainWindow()));//数据获取完毕后，告诉界面去更新数据后显示界面 connect(systeminterface, SIGNAL(dbusInitFinished()), this, SLOT(displayMainWindow()), Qt::QueuedConnection);//数据获取完毕后，告诉界面去更新数据后显示界面
systemThread->start(); systemThread->start();
@ -951,10 +953,12 @@ void MainWindow::closeYoukerAssistant() {
connect(animation, SIGNAL(finished()), this, SLOT(close())); connect(animation, SIGNAL(finished()), this, SLOT(close()));
} }
void MainWindow::closeEvent(QCloseEvent *) void MainWindow::closeEvent(QCloseEvent *event)
{ {
qDebug() << "MainWindow::closeEvent.....";
// QApplication::quit(); // QApplication::quit();
qApp->exit(); qApp->exit();
// QDialog::closeEvent(event);
} }
void MainWindow::setCurrentPageIndex(int index) void MainWindow::setCurrentPageIndex(int index)

1
src/qtsingleapplication/QtLockedFile Normal file
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@ -0,0 +1 @@
#include "qtlockedfile.h"

1
src/qtsingleapplication/QtSingleApplication Normal file
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@ -0,0 +1 @@
#include "qtsingleapplication.h"

204
src/qtsingleapplication/qtlocalpeer.cpp Normal file
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@ -0,0 +1,204 @@
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtlocalpeer.h"
#include <QCoreApplication>
#include <QDataStream>
#include <QTime>
#if defined(Q_OS_WIN)
#include <QLibrary>
#include <qt_windows.h>
typedef BOOL(WINAPI*PProcessIdToSessionId)(DWORD,DWORD*);
static PProcessIdToSessionId pProcessIdToSessionId = 0;
#endif
#if defined(Q_OS_UNIX)
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#endif
namespace QtLP_Private {
#include "qtlockedfile.cpp"
#if defined(Q_OS_WIN)
#include "qtlockedfile_win.cpp"
#else
#include "qtlockedfile_unix.cpp"
#endif
}
const char* QtLocalPeer::ack = "ack";
QtLocalPeer::QtLocalPeer(QObject* parent, const QString &appId)
: QObject(parent), id(appId)
{
QString prefix = id;
if (id.isEmpty()) {
id = QCoreApplication::applicationFilePath();
#if defined(Q_OS_WIN)
id = id.toLower();
#endif
prefix = id.section(QLatin1Char('/'), -1);
}
prefix.remove(QRegExp("[^a-zA-Z]"));
prefix.truncate(6);
QByteArray idc = id.toUtf8();
quint16 idNum = qChecksum(idc.constData(), idc.size());
socketName = QLatin1String("qtsingleapp-") + prefix
+ QLatin1Char('-') + QString::number(idNum, 16);
#if defined(Q_OS_WIN)
if (!pProcessIdToSessionId) {
QLibrary lib("kernel32");
pProcessIdToSessionId = (PProcessIdToSessionId)lib.resolve("ProcessIdToSessionId");
}
if (pProcessIdToSessionId) {
DWORD sessionId = 0;
pProcessIdToSessionId(GetCurrentProcessId(), &sessionId);
socketName += QLatin1Char('-') + QString::number(sessionId, 16);
}
#else
socketName += QLatin1Char('-') + QString::number(::getuid(), 16);
#endif
server = new QLocalServer(this);
QString lockName = QDir(QDir::tempPath()).absolutePath()
+ QLatin1Char('/') + socketName
+ QLatin1String("-lockfile");
lockFile.setFileName(lockName);
lockFile.open(QIODevice::ReadWrite);
}
bool QtLocalPeer::isClient()
{
if (lockFile.isLocked())
return false;
if (!lockFile.lock(QtLP_Private::QtLockedFile::WriteLock, false))
return true;
bool res = server->listen(socketName);
#if defined(Q_OS_UNIX) && (QT_VERSION >= QT_VERSION_CHECK(4,5,0))
// ### Workaround
if (!res && server->serverError() == QAbstractSocket::AddressInUseError) {
QFile::remove(QDir::cleanPath(QDir::tempPath())+QLatin1Char('/')+socketName);
res = server->listen(socketName);
}
#endif
if (!res)
qWarning("QtSingleCoreApplication: listen on local socket failed, %s", qPrintable(server->errorString()));
QObject::connect(server, SIGNAL(newConnection()), SLOT(receiveConnection()));
return false;
}
bool QtLocalPeer::sendMessage(const QString &message, int timeout)
{
if (!isClient())
return false;
QLocalSocket socket;
bool connOk = false;
for(int i = 0; i < 2; i++) {
// Try twice, in case the other instance is just starting up
socket.connectToServer(socketName);
connOk = socket.waitForConnected(timeout/2);
if (connOk || i)
break;
int ms = 250;
#if defined(Q_OS_WIN)
Sleep(DWORD(ms));
#else
struct timespec ts = { ms / 1000, (ms % 1000) * 1000 * 1000 };
nanosleep(&ts, NULL);
#endif
}
if (!connOk)
return false;
QByteArray uMsg(message.toUtf8());
QDataStream ds(&socket);
ds.writeBytes(uMsg.constData(), uMsg.size());
bool res = socket.waitForBytesWritten(timeout);
if (res) {
res &= socket.waitForReadyRead(timeout); // wait for ack
if (res)
res &= (socket.read(qstrlen(ack)) == ack);
}
return res;
}
void QtLocalPeer::receiveConnection()
{
QLocalSocket* socket = server->nextPendingConnection();
if (!socket)
return;
while (socket->bytesAvailable() < (int)sizeof(quint32))
socket->waitForReadyRead();
QDataStream ds(socket);
QByteArray uMsg;
quint32 remaining;
ds >> remaining;
uMsg.resize(remaining);
int got = 0;
char* uMsgBuf = uMsg.data();
do {
got = ds.readRawData(uMsgBuf, remaining);
remaining -= got;
uMsgBuf += got;
} while (remaining && got >= 0 && socket->waitForReadyRead(2000));
if (got < 0) {
qWarning("QtLocalPeer: Message reception failed %s", socket->errorString().toLatin1().constData());
delete socket;
return;
}
QString message(QString::fromUtf8(uMsg));
socket->write(ack, qstrlen(ack));
socket->waitForBytesWritten(1000);
socket->waitForDisconnected(1000); // make sure client reads ack
delete socket;
emit messageReceived(message); //### (might take a long time to return)
}

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTLOCALPEER_H
#define QTLOCALPEER_H
#include <QLocalServer>
#include <QLocalSocket>
#include <QDir>
#include "qtlockedfile.h"
class QtLocalPeer : public QObject
{
Q_OBJECT
public:
QtLocalPeer(QObject *parent = 0, const QString &appId = QString());
bool isClient();
bool sendMessage(const QString &message, int timeout);
QString applicationId() const
{ return id; }
Q_SIGNALS:
void messageReceived(const QString &message);
protected Q_SLOTS:
void receiveConnection();
protected:
QString id;
QString socketName;
QLocalServer* server;
QtLP_Private::QtLockedFile lockFile;
private:
static const char* ack;
};
#endif // QTLOCALPEER_H

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtlockedfile.h"
/*!
\class QtLockedFile
\brief The QtLockedFile class extends QFile with advisory locking
functions.
A file may be locked in read or write mode. Multiple instances of
\e QtLockedFile, created in multiple processes running on the same
machine, may have a file locked in read mode. Exactly one instance
may have it locked in write mode. A read and a write lock cannot
exist simultaneously on the same file.
The file locks are advisory. This means that nothing prevents
another process from manipulating a locked file using QFile or
file system functions offered by the OS. Serialization is only
guaranteed if all processes that access the file use
QLockedFile. Also, while holding a lock on a file, a process
must not open the same file again (through any API), or locks
can be unexpectedly lost.
The lock provided by an instance of \e QtLockedFile is released
whenever the program terminates. This is true even when the
program crashes and no destructors are called.
*/
/*! \enum QtLockedFile::LockMode
This enum describes the available lock modes.
\value ReadLock A read lock.
\value WriteLock A write lock.
\value NoLock Neither a read lock nor a write lock.
*/
/*!
Constructs an unlocked \e QtLockedFile object. This constructor
behaves in the same way as \e QFile::QFile().
\sa QFile::QFile()
*/
QtLockedFile::QtLockedFile()
: QFile()
{
#ifdef Q_OS_WIN
wmutex = 0;
rmutex = 0;
#endif
m_lock_mode = NoLock;
}
/*!
Constructs an unlocked QtLockedFile object with file \a name. This
constructor behaves in the same way as \e QFile::QFile(const
QString&).
\sa QFile::QFile()
*/
QtLockedFile::QtLockedFile(const QString &name)
: QFile(name)
{
#ifdef Q_OS_WIN
wmutex = 0;
rmutex = 0;
#endif
m_lock_mode = NoLock;
}
/*!
Opens the file in OpenMode \a mode.
This is identical to QFile::open(), with the one exception that the
Truncate mode flag is disallowed. Truncation would conflict with the
advisory file locking, since the file would be modified before the
write lock is obtained. If truncation is required, use resize(0)
after obtaining the write lock.
Returns true if successful; otherwise false.
\sa QFile::open(), QFile::resize()
*/
bool QtLockedFile::open(OpenMode mode)
{
if (mode & QIODevice::Truncate) {
qWarning("QtLockedFile::open(): Truncate mode not allowed.");
return false;
}
return QFile::open(mode);
}
/*!
Returns \e true if this object has a in read or write lock;
otherwise returns \e false.
\sa lockMode()
*/
bool QtLockedFile::isLocked() const
{
return m_lock_mode != NoLock;
}
/*!
Returns the type of lock currently held by this object, or \e
QtLockedFile::NoLock.
\sa isLocked()
*/
QtLockedFile::LockMode QtLockedFile::lockMode() const
{
return m_lock_mode;
}
/*!
\fn bool QtLockedFile::lock(LockMode mode, bool block = true)
Obtains a lock of type \a mode. The file must be opened before it
can be locked.
If \a block is true, this function will block until the lock is
aquired. If \a block is false, this function returns \e false
immediately if the lock cannot be aquired.
If this object already has a lock of type \a mode, this function
returns \e true immediately. If this object has a lock of a
different type than \a mode, the lock is first released and then a
new lock is obtained.
This function returns \e true if, after it executes, the file is
locked by this object, and \e false otherwise.
\sa unlock(), isLocked(), lockMode()
*/
/*!
\fn bool QtLockedFile::unlock()
Releases a lock.
If the object has no lock, this function returns immediately.
This function returns \e true if, after it executes, the file is
not locked by this object, and \e false otherwise.
\sa lock(), isLocked(), lockMode()
*/
/*!
\fn QtLockedFile::~QtLockedFile()
Destroys the \e QtLockedFile object. If any locks were held, they
are released.
*/

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTLOCKEDFILE_H
#define QTLOCKEDFILE_H
#include <QFile>
#ifdef Q_OS_WIN
#include <QVector>
#endif
#if defined(Q_OS_WIN)
# if !defined(QT_QTLOCKEDFILE_EXPORT) && !defined(QT_QTLOCKEDFILE_IMPORT)
# define QT_QTLOCKEDFILE_EXPORT
# elif defined(QT_QTLOCKEDFILE_IMPORT)
# if defined(QT_QTLOCKEDFILE_EXPORT)
# undef QT_QTLOCKEDFILE_EXPORT
# endif
# define QT_QTLOCKEDFILE_EXPORT __declspec(dllimport)
# elif defined(QT_QTLOCKEDFILE_EXPORT)
# undef QT_QTLOCKEDFILE_EXPORT
# define QT_QTLOCKEDFILE_EXPORT __declspec(dllexport)
# endif
#else
# define QT_QTLOCKEDFILE_EXPORT
#endif
namespace QtLP_Private {
class QT_QTLOCKEDFILE_EXPORT QtLockedFile : public QFile
{
public:
enum LockMode { NoLock = 0, ReadLock, WriteLock };
QtLockedFile();
QtLockedFile(const QString &name);
~QtLockedFile();
bool open(OpenMode mode);
bool lock(LockMode mode, bool block = true);
bool unlock();
bool isLocked() const;
LockMode lockMode() const;
private:
#ifdef Q_OS_WIN
Qt::HANDLE wmutex;
Qt::HANDLE rmutex;
QVector<Qt::HANDLE> rmutexes;
QString mutexname;
Qt::HANDLE getMutexHandle(int idx, bool doCreate);
bool waitMutex(Qt::HANDLE mutex, bool doBlock);
#endif
LockMode m_lock_mode;
};
}
#endif

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include "qtlockedfile.h"
bool QtLockedFile::lock(LockMode mode, bool block)
{
if (!isOpen()) {
qWarning("QtLockedFile::lock(): file is not opened");
return false;
}
if (mode == NoLock)
return unlock();
if (mode == m_lock_mode)
return true;
if (m_lock_mode != NoLock)
unlock();
struct flock fl;
fl.l_whence = SEEK_SET;
fl.l_start = 0;
fl.l_len = 0;
fl.l_type = (mode == ReadLock) ? F_RDLCK : F_WRLCK;
int cmd = block ? F_SETLKW : F_SETLK;
int ret = fcntl(handle(), cmd, &fl);
if (ret == -1) {
if (errno != EINTR && errno != EAGAIN)
qWarning("QtLockedFile::lock(): fcntl: %s", strerror(errno));
return false;
}
m_lock_mode = mode;
return true;
}
bool QtLockedFile::unlock()
{
if (!isOpen()) {
qWarning("QtLockedFile::unlock(): file is not opened");
return false;
}
if (!isLocked())
return true;
struct flock fl;
fl.l_whence = SEEK_SET;
fl.l_start = 0;
fl.l_len = 0;
fl.l_type = F_UNLCK;
int ret = fcntl(handle(), F_SETLKW, &fl);
if (ret == -1) {
qWarning("QtLockedFile::lock(): fcntl: %s", strerror(errno));
return false;
}
m_lock_mode = NoLock;
return true;
}
QtLockedFile::~QtLockedFile()
{
if (isOpen())
unlock();
}

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtlockedfile.h"
#include <qt_windows.h>
#include <QFileInfo>
#define MUTEX_PREFIX "QtLockedFile mutex "
// Maximum number of concurrent read locks. Must not be greater than MAXIMUM_WAIT_OBJECTS
#define MAX_READERS MAXIMUM_WAIT_OBJECTS
#if QT_VERSION >= 0x050000
#define QT_WA(unicode, ansi) unicode
#endif
Qt::HANDLE QtLockedFile::getMutexHandle(int idx, bool doCreate)
{
if (mutexname.isEmpty()) {
QFileInfo fi(*this);
mutexname = QString::fromLatin1(MUTEX_PREFIX)
+ fi.absoluteFilePath().toLower();
}
QString mname(mutexname);
if (idx >= 0)
mname += QString::number(idx);
Qt::HANDLE mutex;
if (doCreate) {
QT_WA( { mutex = CreateMutexW(NULL, FALSE, (TCHAR*)mname.utf16()); },
{ mutex = CreateMutexA(NULL, FALSE, mname.toLocal8Bit().constData()); } );
if (!mutex) {
qErrnoWarning("QtLockedFile::lock(): CreateMutex failed");
return 0;
}
}
else {
QT_WA( { mutex = OpenMutexW(SYNCHRONIZE | MUTEX_MODIFY_STATE, FALSE, (TCHAR*)mname.utf16()); },
{ mutex = OpenMutexA(SYNCHRONIZE | MUTEX_MODIFY_STATE, FALSE, mname.toLocal8Bit().constData()); } );
if (!mutex) {
if (GetLastError() != ERROR_FILE_NOT_FOUND)
qErrnoWarning("QtLockedFile::lock(): OpenMutex failed");
return 0;
}
}
return mutex;
}
bool QtLockedFile::waitMutex(Qt::HANDLE mutex, bool doBlock)
{
Q_ASSERT(mutex);
DWORD res = WaitForSingleObject(mutex, doBlock ? INFINITE : 0);
switch (res) {
case WAIT_OBJECT_0:
case WAIT_ABANDONED:
return true;
break;
case WAIT_TIMEOUT:
break;
default:
qErrnoWarning("QtLockedFile::lock(): WaitForSingleObject failed");
}
return false;
}
bool QtLockedFile::lock(LockMode mode, bool block)
{
if (!isOpen()) {
qWarning("QtLockedFile::lock(): file is not opened");
return false;
}
if (mode == NoLock)
return unlock();
if (mode == m_lock_mode)
return true;
if (m_lock_mode != NoLock)
unlock();
if (!wmutex && !(wmutex = getMutexHandle(-1, true)))
return false;
if (!waitMutex(wmutex, block))
return false;
if (mode == ReadLock) {
int idx = 0;
for (; idx < MAX_READERS; idx++) {
rmutex = getMutexHandle(idx, false);
if (!rmutex || waitMutex(rmutex, false))
break;
CloseHandle(rmutex);
}
bool ok = true;
if (idx >= MAX_READERS) {
qWarning("QtLockedFile::lock(): too many readers");
rmutex = 0;
ok = false;
}
else if (!rmutex) {
rmutex = getMutexHandle(idx, true);
if (!rmutex || !waitMutex(rmutex, false))
ok = false;
}
if (!ok && rmutex) {
CloseHandle(rmutex);
rmutex = 0;
}
ReleaseMutex(wmutex);
if (!ok)
return false;
}
else {
Q_ASSERT(rmutexes.isEmpty());
for (int i = 0; i < MAX_READERS; i++) {
Qt::HANDLE mutex = getMutexHandle(i, false);
if (mutex)
rmutexes.append(mutex);
}
if (rmutexes.size()) {
DWORD res = WaitForMultipleObjects(rmutexes.size(), rmutexes.constData(),
TRUE, block ? INFINITE : 0);
if (res != WAIT_OBJECT_0 && res != WAIT_ABANDONED) {
if (res != WAIT_TIMEOUT)
qErrnoWarning("QtLockedFile::lock(): WaitForMultipleObjects failed");
m_lock_mode = WriteLock; // trick unlock() to clean up - semiyucky
unlock();
return false;
}
}
}
m_lock_mode = mode;
return true;
}
bool QtLockedFile::unlock()
{
if (!isOpen()) {
qWarning("QtLockedFile::unlock(): file is not opened");
return false;
}
if (!isLocked())
return true;
if (m_lock_mode == ReadLock) {
ReleaseMutex(rmutex);
CloseHandle(rmutex);
rmutex = 0;
}
else {
foreach(Qt::HANDLE mutex, rmutexes) {
ReleaseMutex(mutex);
CloseHandle(mutex);
}
rmutexes.clear();
ReleaseMutex(wmutex);
}
m_lock_mode = QtLockedFile::NoLock;
return true;
}
QtLockedFile::~QtLockedFile()
{
if (isOpen())
unlock();
if (wmutex)
CloseHandle(wmutex);
}

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtsingleapplication.h"
#include "qtlocalpeer.h"
#include <QWidget>
/*!
\class QtSingleApplication qtsingleapplication.h
\brief The QtSingleApplication class provides an API to detect and
communicate with running instances of an application.
This class allows you to create applications where only one
instance should be running at a time. I.e., if the user tries to
launch another instance, the already running instance will be
activated instead. Another usecase is a client-server system,
where the first started instance will assume the role of server,
and the later instances will act as clients of that server.
By default, the full path of the executable file is used to
determine whether two processes are instances of the same
application. You can also provide an explicit identifier string
that will be compared instead.
The application should create the QtSingleApplication object early
in the startup phase, and call isRunning() to find out if another
instance of this application is already running. If isRunning()
returns false, it means that no other instance is running, and
this instance has assumed the role as the running instance. In
this case, the application should continue with the initialization
of the application user interface before entering the event loop
with exec(), as normal.
The messageReceived() signal will be emitted when the running
application receives messages from another instance of the same
application. When a message is received it might be helpful to the
user to raise the application so that it becomes visible. To
facilitate this, QtSingleApplication provides the
setActivationWindow() function and the activateWindow() slot.
If isRunning() returns true, another instance is already
running. It may be alerted to the fact that another instance has
started by using the sendMessage() function. Also data such as
startup parameters (e.g. the name of the file the user wanted this
new instance to open) can be passed to the running instance with
this function. Then, the application should terminate (or enter
client mode).
If isRunning() returns true, but sendMessage() fails, that is an
indication that the running instance is frozen.
Here's an example that shows how to convert an existing
application to use QtSingleApplication. It is very simple and does
not make use of all QtSingleApplication's functionality (see the
examples for that).
\code
// Original
int main(int argc, char **argv)
{
QApplication app(argc, argv);
MyMainWidget mmw;
mmw.show();
return app.exec();
}
// Single instance
int main(int argc, char **argv)
{
QtSingleApplication app(argc, argv);
if (app.isRunning())
return !app.sendMessage(someDataString);
MyMainWidget mmw;
app.setActivationWindow(&mmw);
mmw.show();
return app.exec();
}
\endcode
Once this QtSingleApplication instance is destroyed (normally when
the process exits or crashes), when the user next attempts to run the
application this instance will not, of course, be encountered. The
next instance to call isRunning() or sendMessage() will assume the
role as the new running instance.
For console (non-GUI) applications, QtSingleCoreApplication may be
used instead of this class, to avoid the dependency on the QtGui
library.
\sa QtSingleCoreApplication
*/
void QtSingleApplication::sysInit(const QString &appId)
{
actWin = 0;
peer = new QtLocalPeer(this, appId);
connect(peer, SIGNAL(messageReceived(const QString&)), SIGNAL(messageReceived(const QString&)));
}
/*!
Creates a QtSingleApplication object. The application identifier
will be QCoreApplication::applicationFilePath(). \a argc, \a
argv, and \a GUIenabled are passed on to the QAppliation constructor.
If you are creating a console application (i.e. setting \a
GUIenabled to false), you may consider using
QtSingleCoreApplication instead.
*/
QtSingleApplication::QtSingleApplication(int &argc, char **argv, bool GUIenabled)
: QApplication(argc, argv, GUIenabled)
{
sysInit();
}
/*!
Creates a QtSingleApplication object with the application
identifier \a appId. \a argc and \a argv are passed on to the
QAppliation constructor.
*/
QtSingleApplication::QtSingleApplication(const QString &appId, int &argc, char **argv)
: QApplication(argc, argv)
{
sysInit(appId);
}
#if QT_VERSION < 0x050000
/*!
Creates a QtSingleApplication object. The application identifier
will be QCoreApplication::applicationFilePath(). \a argc, \a
argv, and \a type are passed on to the QAppliation constructor.
*/
QtSingleApplication::QtSingleApplication(int &argc, char **argv, Type type)
: QApplication(argc, argv, type)
{
sysInit();
}
# if defined(Q_WS_X11)
/*!
Special constructor for X11, ref. the documentation of
QApplication's corresponding constructor. The application identifier
will be QCoreApplication::applicationFilePath(). \a dpy, \a visual,
and \a cmap are passed on to the QApplication constructor.
*/
QtSingleApplication::QtSingleApplication(Display* dpy, Qt::HANDLE visual, Qt::HANDLE cmap)
: QApplication(dpy, visual, cmap)
{
sysInit();
}
/*!
Special constructor for X11, ref. the documentation of
QApplication's corresponding constructor. The application identifier
will be QCoreApplication::applicationFilePath(). \a dpy, \a argc, \a
argv, \a visual, and \a cmap are passed on to the QApplication
constructor.
*/
QtSingleApplication::QtSingleApplication(Display *dpy, int &argc, char **argv, Qt::HANDLE visual, Qt::HANDLE cmap)
: QApplication(dpy, argc, argv, visual, cmap)
{
sysInit();
}
/*!
Special constructor for X11, ref. the documentation of
QApplication's corresponding constructor. The application identifier
will be \a appId. \a dpy, \a argc, \a
argv, \a visual, and \a cmap are passed on to the QApplication
constructor.
*/
QtSingleApplication::QtSingleApplication(Display* dpy, const QString &appId, int argc, char **argv, Qt::HANDLE visual, Qt::HANDLE cmap)
: QApplication(dpy, argc, argv, visual, cmap)
{
sysInit(appId);
}
# endif // Q_WS_X11
#endif // QT_VERSION < 0x050000
/*!
Returns true if another instance of this application is running;
otherwise false.
This function does not find instances of this application that are
being run by a different user (on Windows: that are running in
another session).
\sa sendMessage()
*/
bool QtSingleApplication::isRunning()
{
return peer->isClient();
}
/*!
Tries to send the text \a message to the currently running
instance. The QtSingleApplication object in the running instance
will emit the messageReceived() signal when it receives the
message.
This function returns true if the message has been sent to, and
processed by, the current instance. If there is no instance
currently running, or if the running instance fails to process the
message within \a timeout milliseconds, this function return false.
\sa isRunning(), messageReceived()
*/
bool QtSingleApplication::sendMessage(const QString &message, int timeout)
{
return peer->sendMessage(message, timeout);
}
/*!
Returns the application identifier. Two processes with the same
identifier will be regarded as instances of the same application.
*/
QString QtSingleApplication::id() const
{
return peer->applicationId();
}
/*!
Sets the activation window of this application to \a aw. The
activation window is the widget that will be activated by
activateWindow(). This is typically the application's main window.
If \a activateOnMessage is true (the default), the window will be
activated automatically every time a message is received, just prior
to the messageReceived() signal being emitted.
\sa activateWindow(), messageReceived()
*/
void QtSingleApplication::setActivationWindow(QWidget* aw, bool activateOnMessage)
{
actWin = aw;
if (activateOnMessage)
connect(peer, SIGNAL(messageReceived(const QString&)), this, SLOT(activateWindow()));
else
disconnect(peer, SIGNAL(messageReceived(const QString&)), this, SLOT(activateWindow()));
}
/*!
Returns the applications activation window if one has been set by
calling setActivationWindow(), otherwise returns 0.
\sa setActivationWindow()
*/
QWidget* QtSingleApplication::activationWindow() const
{
return actWin;
}
/*!
De-minimizes, raises, and activates this application's activation window.
This function does nothing if no activation window has been set.
This is a convenience function to show the user that this
application instance has been activated when he has tried to start
another instance.
This function should typically be called in response to the
messageReceived() signal. By default, that will happen
automatically, if an activation window has been set.
\sa setActivationWindow(), messageReceived(), initialize()
*/
void QtSingleApplication::activateWindow()
{
if (actWin) {
actWin->setWindowState(actWin->windowState() & ~Qt::WindowMinimized);
actWin->raise();
actWin->activateWindow();
}
}
/*!
\fn void QtSingleApplication::messageReceived(const QString& message)
This signal is emitted when the current instance receives a \a
message from another instance of this application.
\sa sendMessage(), setActivationWindow(), activateWindow()
*/
/*!
\fn void QtSingleApplication::initialize(bool dummy = true)
\obsolete
*/

105
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@ -0,0 +1,105 @@
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTSINGLEAPPLICATION_H
#define QTSINGLEAPPLICATION_H
#include <QApplication>
class QtLocalPeer;
#if defined(Q_OS_WIN)
# if !defined(QT_QTSINGLEAPPLICATION_EXPORT) && !defined(QT_QTSINGLEAPPLICATION_IMPORT)
# define QT_QTSINGLEAPPLICATION_EXPORT
# elif defined(QT_QTSINGLEAPPLICATION_IMPORT)
# if defined(QT_QTSINGLEAPPLICATION_EXPORT)
# undef QT_QTSINGLEAPPLICATION_EXPORT
# endif
# define QT_QTSINGLEAPPLICATION_EXPORT __declspec(dllimport)
# elif defined(QT_QTSINGLEAPPLICATION_EXPORT)
# undef QT_QTSINGLEAPPLICATION_EXPORT
# define QT_QTSINGLEAPPLICATION_EXPORT __declspec(dllexport)
# endif
#else
# define QT_QTSINGLEAPPLICATION_EXPORT
#endif
class QT_QTSINGLEAPPLICATION_EXPORT QtSingleApplication : public QApplication
{
Q_OBJECT
public:
QtSingleApplication(int &argc, char **argv, bool GUIenabled = true);
QtSingleApplication(const QString &id, int &argc, char **argv);
#if QT_VERSION < 0x050000
QtSingleApplication(int &argc, char **argv, Type type);
# if defined(Q_WS_X11)
QtSingleApplication(Display* dpy, Qt::HANDLE visual = 0, Qt::HANDLE colormap = 0);
QtSingleApplication(Display *dpy, int &argc, char **argv, Qt::HANDLE visual = 0, Qt::HANDLE cmap= 0);
QtSingleApplication(Display* dpy, const QString &appId, int argc, char **argv, Qt::HANDLE visual = 0, Qt::HANDLE colormap = 0);
# endif // Q_WS_X11
#endif // QT_VERSION < 0x050000
bool isRunning();
QString id() const;
void setActivationWindow(QWidget* aw, bool activateOnMessage = true);
QWidget* activationWindow() const;
// Obsolete:
void initialize(bool dummy = true)
{ isRunning(); Q_UNUSED(dummy) }
public Q_SLOTS:
bool sendMessage(const QString &message, int timeout = 5000);
void activateWindow();
Q_SIGNALS:
void messageReceived(const QString &message);
private:
void sysInit(const QString &appId = QString());
QtLocalPeer *peer;
QWidget *actWin;
};
#endif // QTSINGLEAPPLICATION_H

17
src/qtsingleapplication/qtsingleapplication.pri Normal file
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@ -0,0 +1,17 @@
include(../common.pri)
INCLUDEPATH += $$PWD
DEPENDPATH += $$PWD
QT *= network
greaterThan(QT_MAJOR_VERSION, 4): QT *= widgets
qtsingleapplication-uselib:!qtsingleapplication-buildlib {
LIBS += -L$$QTSINGLEAPPLICATION_LIBDIR -l$$QTSINGLEAPPLICATION_LIBNAME
} else {
SOURCES += $$PWD/qtsingleapplication.cpp $$PWD/qtlocalpeer.cpp
HEADERS += $$PWD/qtsingleapplication.h $$PWD/qtlocalpeer.h
}
win32 {
contains(TEMPLATE, lib):contains(CONFIG, shared):DEFINES += QT_QTSINGLEAPPLICATION_EXPORT
else:qtsingleapplication-uselib:DEFINES += QT_QTSINGLEAPPLICATION_IMPORT
}

149
src/qtsingleapplication/qtsinglecoreapplication.cpp Normal file
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@ -0,0 +1,149 @@
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtsinglecoreapplication.h"
#include "qtlocalpeer.h"
/*!
\class QtSingleCoreApplication qtsinglecoreapplication.h
\brief A variant of the QtSingleApplication class for non-GUI applications.
This class is a variant of QtSingleApplication suited for use in
console (non-GUI) applications. It is an extension of
QCoreApplication (instead of QApplication). It does not require
the QtGui library.
The API and usage is identical to QtSingleApplication, except that
functions relating to the "activation window" are not present, for
obvious reasons. Please refer to the QtSingleApplication
documentation for explanation of the usage.
A QtSingleCoreApplication instance can communicate to a
QtSingleApplication instance if they share the same application
id. Hence, this class can be used to create a light-weight
command-line tool that sends commands to a GUI application.
\sa QtSingleApplication
*/
/*!
Creates a QtSingleCoreApplication object. The application identifier
will be QCoreApplication::applicationFilePath(). \a argc and \a
argv are passed on to the QCoreAppliation constructor.
*/
QtSingleCoreApplication::QtSingleCoreApplication(int &argc, char **argv)
: QCoreApplication(argc, argv)
{
peer = new QtLocalPeer(this);
connect(peer, SIGNAL(messageReceived(const QString&)), SIGNAL(messageReceived(const QString&)));
}
/*!
Creates a QtSingleCoreApplication object with the application
identifier \a appId. \a argc and \a argv are passed on to the
QCoreAppliation constructor.
*/
QtSingleCoreApplication::QtSingleCoreApplication(const QString &appId, int &argc, char **argv)
: QCoreApplication(argc, argv)
{
peer = new QtLocalPeer(this, appId);
connect(peer, SIGNAL(messageReceived(const QString&)), SIGNAL(messageReceived(const QString&)));
}
/*!
Returns true if another instance of this application is running;
otherwise false.
This function does not find instances of this application that are
being run by a different user (on Windows: that are running in
another session).
\sa sendMessage()
*/
bool QtSingleCoreApplication::isRunning()
{
return peer->isClient();
}
/*!
Tries to send the text \a message to the currently running
instance. The QtSingleCoreApplication object in the running instance
will emit the messageReceived() signal when it receives the
message.
This function returns true if the message has been sent to, and
processed by, the current instance. If there is no instance
currently running, or if the running instance fails to process the
message within \a timeout milliseconds, this function return false.
\sa isRunning(), messageReceived()
*/
bool QtSingleCoreApplication::sendMessage(const QString &message, int timeout)
{
return peer->sendMessage(message, timeout);
}
/*!
Returns the application identifier. Two processes with the same
identifier will be regarded as instances of the same application.
*/
QString QtSingleCoreApplication::id() const
{
return peer->applicationId();
}
/*!
\fn void QtSingleCoreApplication::messageReceived(const QString& message)
This signal is emitted when the current instance receives a \a
message from another instance of this application.
\sa sendMessage()
*/

71
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@ -0,0 +1,71 @@
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Solutions component.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTSINGLECOREAPPLICATION_H
#define QTSINGLECOREAPPLICATION_H
#include <QCoreApplication>
class QtLocalPeer;
class QtSingleCoreApplication : public QCoreApplication
{
Q_OBJECT
public:
QtSingleCoreApplication(int &argc, char **argv);
QtSingleCoreApplication(const QString &id, int &argc, char **argv);
bool isRunning();
QString id() const;
public Q_SLOTS:
bool sendMessage(const QString &message, int timeout = 5000);
Q_SIGNALS:
void messageReceived(const QString &message);
private:
QtLocalPeer* peer;
};
#endif // QTSINGLECOREAPPLICATION_H

10
src/qtsingleapplication/qtsinglecoreapplication.pri Normal file
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@ -0,0 +1,10 @@
INCLUDEPATH += $$PWD
DEPENDPATH += $$PWD
HEADERS += $$PWD/qtsinglecoreapplication.h $$PWD/qtlocalpeer.h
SOURCES += $$PWD/qtsinglecoreapplication.cpp $$PWD/qtlocalpeer.cpp
QT *= network
win32:contains(TEMPLATE, lib):contains(CONFIG, shared) {
DEFINES += QT_QTSINGLECOREAPPLICATION_EXPORT=__declspec(dllexport)
}

10
src/src.pro
View File

@ -11,7 +11,7 @@ CONFIG += qt warn_on
CONFIG += release CONFIG += release
CONFIG += link_pkgconfig CONFIG += link_pkgconfig
QT += dbus QT += dbus network
inst1.files += res/kylin-assistant.png inst1.files += res/kylin-assistant.png
inst1.path = /usr/share/pixmaps inst1.path = /usr/share/pixmaps
@ -136,6 +136,7 @@ SOURCES += main.cpp\
../component/basewidget.cpp ../component/basewidget.cpp
HEADERS += mainwindow.h \ HEADERS += mainwindow.h \
kpplication.h \
titlewidget.h \ titlewidget.h \
actionwidget.h \ actionwidget.h \
homeactionwidget.h \ homeactionwidget.h \
@ -236,3 +237,10 @@ FORMS += \
RESOURCES += \ RESOURCES += \
img.qrc img.qrc
INCLUDEPATH += qtsingleapplication
DEPENDPATH += qtsingleapplication
SOURCES += qtsingleapplication/qtsingleapplication.cpp qtsingleapplication/qtlocalpeer.cpp
HEADERS += qtsingleapplication/qtsingleapplication.h qtsingleapplication/qtlocalpeer.h