From a651459416a0e5d013f162f8ece5c1bb90cf7d61 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E6=9D=8E=20=E7=BF=94?= Date: Fri, 22 Dec 2017 18:03:28 +0800 Subject: [PATCH] add qtsingleapplication --- dbusproxy/youkersystemdbus.cpp | 14 +- debian/changelog | 2 +- kylin-assistant.pro | 1 + processmanager/process.json | 1 + processmanager/processdialog.cpp | 5 +- processmanager/processmanager.cpp | 4 + processmanager/processmanager.h | 4 + processmanager/processmanager.pro | 13 +- shredmanager/shredmanager.pro | 6 +- src/kpplication.h | 44 +++ src/main.cpp | 238 +++++------- src/mainwindow.cpp | 8 +- src/qtsingleapplication/QtLockedFile | 1 + src/qtsingleapplication/QtSingleApplication | 1 + src/qtsingleapplication/qtlocalpeer.cpp | 204 ++++++++++ src/qtsingleapplication/qtlocalpeer.h | 77 ++++ src/qtsingleapplication/qtlockedfile.cpp | 193 ++++++++++ src/qtsingleapplication/qtlockedfile.h | 97 +++++ src/qtsingleapplication/qtlockedfile_unix.cpp | 115 ++++++ src/qtsingleapplication/qtlockedfile_win.cpp | 211 +++++++++++ .../qtsingleapplication.cpp | 347 ++++++++++++++++++ src/qtsingleapplication/qtsingleapplication.h | 105 ++++++ .../qtsingleapplication.pri | 17 + .../qtsinglecoreapplication.cpp | 149 ++++++++ .../qtsinglecoreapplication.h | 71 ++++ .../qtsinglecoreapplication.pri | 10 + src/src.pro | 10 +- 27 files changed, 1779 insertions(+), 169 deletions(-) create mode 100644 processmanager/process.json create mode 100644 src/kpplication.h create mode 100644 src/qtsingleapplication/QtLockedFile create mode 100644 src/qtsingleapplication/QtSingleApplication create mode 100644 src/qtsingleapplication/qtlocalpeer.cpp create mode 100644 src/qtsingleapplication/qtlocalpeer.h create mode 100644 src/qtsingleapplication/qtlockedfile.cpp create mode 100644 src/qtsingleapplication/qtlockedfile.h create mode 100644 src/qtsingleapplication/qtlockedfile_unix.cpp create mode 100644 src/qtsingleapplication/qtlockedfile_win.cpp create mode 100644 src/qtsingleapplication/qtsingleapplication.cpp create mode 100644 src/qtsingleapplication/qtsingleapplication.h create mode 100644 src/qtsingleapplication/qtsingleapplication.pri create mode 100644 src/qtsingleapplication/qtsinglecoreapplication.cpp create mode 100644 src/qtsingleapplication/qtsinglecoreapplication.h create mode 100644 src/qtsingleapplication/qtsinglecoreapplication.pri diff --git a/dbusproxy/youkersystemdbus.cpp b/dbusproxy/youkersystemdbus.cpp index 372a090..9fc7ab0 100644 --- a/dbusproxy/youkersystemdbus.cpp +++ b/dbusproxy/youkersystemdbus.cpp @@ -46,7 +46,7 @@ SystemDispatcher::~SystemDispatcher() { clean_thread = NULL; } - + qDebug() << "system dbus destroy.............."; this->exit_qt(); if (systemiface != NULL) { delete systemiface; @@ -61,16 +61,18 @@ void SystemDispatcher::initData() "com.kylin.assistant.systemdaemon", QDBusConnection::systemBus()); - QObject::connect(systemiface,SIGNAL(quit_clean(bool)),this,SLOT(handler_interrupt_clean(bool))); - 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(status_for_quick_clean(QString,QString)),this,SLOT(handler_status_for_quick_clean(QString,QString))); + 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))/*, Qt::QueuedConnection*/); + + 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_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(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_fetch_signal(QString, QStringList)),this,SLOT(handlerFetchSignal(QString, QStringList))); diff --git a/debian/changelog b/debian/changelog index 19c6153..1ca8c26 100644 --- a/debian/changelog +++ b/debian/changelog @@ -2,6 +2,6 @@ kylin-assistant (1.0.0-0ubuntu1) bionic; urgency=low * fork youker-assistant(commit:764) * upgrade from Qt4 to Qt5. - * hebing first join in + * add qtsingleapplication. -- lixiang Thu, 21 Dec 2017 14:52:56 +0800 diff --git a/kylin-assistant.pro b/kylin-assistant.pro index c2ef82d..b0d6325 100644 --- a/kylin-assistant.pro +++ b/kylin-assistant.pro @@ -2,6 +2,7 @@ TEMPLATE = subdirs SUBDIRS = \ src \ shredmanager \ + processmanager \ backends TRANSLATIONS += \ diff --git a/processmanager/process.json b/processmanager/process.json new file mode 100644 index 0000000..0967ef4 --- /dev/null +++ b/processmanager/process.json @@ -0,0 +1 @@ +{} diff --git a/processmanager/processdialog.cpp b/processmanager/processdialog.cpp index c12a698..dea21eb 100644 --- a/processmanager/processdialog.cpp +++ b/processmanager/processdialog.cpp @@ -26,6 +26,7 @@ #include #include #include +#include //pkg-config --cflags 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")); 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"); initTitleBar(); @@ -255,7 +256,9 @@ void ProcessDialog::showProList() { columnHeaderItem8->setTextColor(QColor(200,111,30)); //表头设置 +#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) tableWidget->horizontalHeader()->setClickable(false); +#endif tableWidget->horizontalHeader()->resizeSection(0,150); tableWidget->horizontalHeader()->resizeSection(1,80); tableWidget->horizontalHeader()->resizeSection(2,50); diff --git a/processmanager/processmanager.cpp b/processmanager/processmanager.cpp index cf662e8..544aa9d 100644 --- a/processmanager/processmanager.cpp +++ b/processmanager/processmanager.cpp @@ -19,6 +19,8 @@ #include "processmanager.h" #include +#include +#include ProcessManager::ProcessManager(QObject *parent) :QObject(parent), process_dialog(this) @@ -60,4 +62,6 @@ void ProcessManager::doAction() process_dialog.raise(); } +#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0) Q_EXPORT_PLUGIN2(ProcessManager, ProcessManager) +#endif diff --git a/processmanager/processmanager.h b/processmanager/processmanager.h index cc666a3..efab435 100644 --- a/processmanager/processmanager.h +++ b/processmanager/processmanager.h @@ -28,6 +28,10 @@ class ProcessManager : public QObject , PluginInterface Q_OBJECT 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: ProcessManager(QObject* parent = 0); virtual ~ProcessManager(); diff --git a/processmanager/processmanager.pro b/processmanager/processmanager.pro index 5b72a41..62081aa 100644 --- a/processmanager/processmanager.pro +++ b/processmanager/processmanager.pro @@ -4,16 +4,15 @@ # #------------------------------------------------- -QT += core gui - -greaterThan(QT_MAJOR_VERSION, 4): QT += widgets +isEqual(QT_MAJOR_VERSION, 5) { + QT += widgets gui +} TARGET = processmanager TEMPLATE = lib -CONFIG += plugin INCLUDEPATH += ../processmanager DESTDIR = ../libs -CONFIG += link_pkgconfig +CONFIG += plugin c++11 link_pkgconfig PKGCONFIG += libgtop-2.0 UI_DIR += $$PWD/../tmp/processmanager/ @@ -26,7 +25,7 @@ OBJECTS_DIR = $$PWD/../obj/processmanager target.source += $$TARGET -target.path = /var/lib/youker-assistant-daemon/libs/ +target.path = /var/lib/kylin-assistant-daemon/libs/ INSTALLS +=target HEADERS += \ @@ -58,4 +57,4 @@ FORMS += \ ../component/alertdialog.ui RESOURCES += \ - ../mainui/img.qrc + ../src/img.qrc diff --git a/shredmanager/shredmanager.pro b/shredmanager/shredmanager.pro index f03cbd5..b12534a 100644 --- a/shredmanager/shredmanager.pro +++ b/shredmanager/shredmanager.pro @@ -4,9 +4,9 @@ # #------------------------------------------------- -QT += core gui - -greaterThan(QT_MAJOR_VERSION, 4): QT += widgets +isEqual(QT_MAJOR_VERSION, 5) { + QT += widgets gui +} TARGET = shredmanager TEMPLATE = lib diff --git a/src/kpplication.h b/src/kpplication.h new file mode 100644 index 0000000..45ef974 --- /dev/null +++ b/src/kpplication.h @@ -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 . + */ + +#ifndef KPPLICATION_H +#define KPPLICATION_H + +#include + +#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(QApplication::instance()); + } +}; + +#endif // KPPLICATION_H diff --git a/src/main.cpp b/src/main.cpp index f9a3e79..08f68d7 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -18,6 +18,7 @@ */ #include "mainwindow.h" +#include "kpplication.h" #include #include #include @@ -32,6 +33,7 @@ #include #include #include +#include #define BUFF_SIZE (512) 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[]) { - QApplication app(argc, argv); +// QApplication app(argc, argv); + Kpplication app("kylin-assistant", argc, argv); + app.setQuitOnLastWindowClosed(false); + app.setOrganizationName("kylin"); app.setApplicationName("kylin-assistant"); app.setApplicationVersion("1.0.0"); - //单程序运行处理 - QSharedMemory mem("KA"); - if (!mem.create(1)) { - qDebug() << QObject::tr("kylin-assistant had already running!"); + Kpplication *app_ins = Kpplication::instance(); + if (app_ins->isRunning()) { + app_ins->sendMessage("Hello"); return 1; } @@ -137,18 +155,28 @@ int main(int argc, char *argv[]) qDebug() << "debug mode"; #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)) - QTextCodec::setCodecForTr(QTextCodec::codecForLocale()); - QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale()); - QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8")); - QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8")); + QTextCodec::setCodecForTr(QTextCodec::codecForLocale()); + QTextCodec::setCodecForCStrings(QTextCodec::codecForLocale()); + QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8")); + QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8")); #endif - if (make_pid_file()) { - exit(1); - } +// signal(SIGINT, sig_int); - QString arch = ""; + // if (make_pid_file()) { + // exit(1); + // } + + QString arch = ""; #ifdef __x86_64__ arch = "x86_64"; @@ -158,149 +186,63 @@ int main(int argc, char *argv[]) arch = "aarch64"; #endif - QString locale = QLocale::system().name(); - 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(!translator.load("kylin-assistant_" + locale + ".qm", - ":/qmfile/translation/")) - qDebug() << "Load translation file："<< "kylin-assistant_" + locale + ".qm" << " failed!"; - else - app.installTranslator(&translator); - } + QString locale = QLocale::system().name(); + 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(!translator.load("kylin-assistant_" + locale + ".qm", + ":/qmfile/translation/")) + qDebug() << "Load translation file："<< "kylin-assistant_" + locale + ".qm" << " failed!"; + else + app.installTranslator(&translator); + } - //加载Qt对话框默认的国际化 - QTranslator qtTranslator; - qtTranslator.load("qt_" + locale, - QLibraryInfo::location(QLibraryInfo::TranslationsPath)); - app.installTranslator(&qtTranslator); + //加载Qt对话框默认的国际化 + QTranslator qtTranslator; + qtTranslator.load("qt_" + locale, + QLibraryInfo::location(QLibraryInfo::TranslationsPath)); + app.installTranslator(&qtTranslator); - QFile qss(":/qssfile/res/qss/kylin-assistant.qss"); - qss.open(QFile::ReadOnly); - qApp->setStyleSheet(qss.readAll()); - qss.close(); + QFile qss(":/qssfile/res/qss/kylin-assistant.qss"); + qss.open(QFile::ReadOnly); + qApp->setStyleSheet(qss.readAll()); + qss.close(); - QDesktopWidget *desktop = QApplication::desktop(); -// 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 -// 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； -// 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(); + QDesktopWidget *desktop = QApplication::desktop(); + // 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 + // 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； + // 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(); - //启动图片 - /*QPixmap pixmap("://res/skin/x.png"); - QSplashScreen screen(pixmap); - screen.show(); - screen.showMessage("START...", Qt::AlignCenter, Qt::white);*/ + //启动图片 + /*QPixmap pixmap("://res/skin/x.png"); + QSplashScreen screen(pixmap); + screen.show(); + screen.showMessage("START...", Qt::AlignCenter, Qt::white);*/ - MainWindow w(arch, sCount); + MainWindow w(arch, sCount); -/*#if 0 - //延时 - int delayTime = 3; - QElapsedTimer timer; - timer.start(); - while (timer.elapsed() < (delayTime * 1000)) { - app.processEvents(); - } - screen.finish(&w); -#endif*/ + /*#if 0 + //延时 + int delayTime = 3; + QElapsedTimer timer; + timer.start(); + while (timer.elapsed() < (delayTime * 1000)) { + app.processEvents(); + } + screen.finish(&w); + #endif*/ - w.setTranslator(&translator); + w.setTranslator(&translator); + // if (sCount > 1) { + // w.setGeometry(desktop->screenGeometry(1)); + // } + // w.display(sCount); + return app.exec(); + //} -// if (sCount > 1) { -// w.setGeometry(desktop->screenGeometry(1)); -// } -// w.display(sCount); - - return app.exec(); + //return 0; } - - -/* -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 - -#include - -#include - -#include - - - -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; iscreenGeometry(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(); - -} - * */ diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp index e78042c..0c7db96 100644 --- a/src/mainwindow.cpp +++ b/src/mainwindow.cpp @@ -256,6 +256,7 @@ MainWindow::~MainWindow() // delete systeminterface; // systeminterface = NULL; // } + qDebug() << "mainwindow destroy..............."; if (sessioninterface) { sessioninterface->deleteLater(); } @@ -622,6 +623,7 @@ void MainWindow::changeLanguage(LANGUAGE language) void MainWindow::displayMainWindow(/*int count*/) { + qDebug() << "displayMainWindow============"; this->battery = sessioninterface->judge_power_is_exists_qt(); this->sensor = systeminterface->judge_sensors_exists_qt(); login_widget->setSessionDbusProxy(sessioninterface); @@ -704,7 +706,7 @@ void MainWindow::startDbusDaemon() // 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(); @@ -951,10 +953,12 @@ void MainWindow::closeYoukerAssistant() { connect(animation, SIGNAL(finished()), this, SLOT(close())); } -void MainWindow::closeEvent(QCloseEvent *) +void MainWindow::closeEvent(QCloseEvent *event) { + qDebug() << "MainWindow::closeEvent....."; // QApplication::quit(); qApp->exit(); +// QDialog::closeEvent(event); } void MainWindow::setCurrentPageIndex(int index) diff --git a/src/qtsingleapplication/QtLockedFile b/src/qtsingleapplication/QtLockedFile new file mode 100644 index 0000000..16b48ba --- /dev/null +++ b/src/qtsingleapplication/QtLockedFile @@ -0,0 +1 @@ +#include "qtlockedfile.h" diff --git a/src/qtsingleapplication/QtSingleApplication b/src/qtsingleapplication/QtSingleApplication new file mode 100644 index 0000000..d111bf7 --- /dev/null +++ b/src/qtsingleapplication/QtSingleApplication @@ -0,0 +1 @@ +#include "qtsingleapplication.h" diff --git a/src/qtsingleapplication/qtlocalpeer.cpp b/src/qtsingleapplication/qtlocalpeer.cpp new file mode 100644 index 0000000..c7ce527 --- /dev/null +++ b/src/qtsingleapplication/qtlocalpeer.cpp @@ -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 +#include +#include + +#if defined(Q_OS_WIN) +#include +#include +typedef BOOL(WINAPI*PProcessIdToSessionId)(DWORD,DWORD*); +static PProcessIdToSessionId pProcessIdToSessionId = 0; +#endif +#if defined(Q_OS_UNIX) +#include +#include +#include +#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) +} diff --git a/src/qtsingleapplication/qtlocalpeer.h b/src/qtsingleapplication/qtlocalpeer.h new file mode 100644 index 0000000..1b533b1 --- /dev/null +++ b/src/qtsingleapplication/qtlocalpeer.h @@ -0,0 +1,77 @@ +/**************************************************************************** +** +** 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 +#include +#include + +#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 diff --git a/src/qtsingleapplication/qtlockedfile.cpp b/src/qtsingleapplication/qtlockedfile.cpp new file mode 100644 index 0000000..c142a86 --- /dev/null +++ b/src/qtsingleapplication/qtlockedfile.cpp @@ -0,0 +1,193 @@ +/**************************************************************************** +** +** 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. +*/ diff --git a/src/qtsingleapplication/qtlockedfile.h b/src/qtsingleapplication/qtlockedfile.h new file mode 100644 index 0000000..84c18e5 --- /dev/null +++ b/src/qtsingleapplication/qtlockedfile.h @@ -0,0 +1,97 @@ +/**************************************************************************** +** +** 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 +#ifdef Q_OS_WIN +#include +#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 rmutexes; + QString mutexname; + + Qt::HANDLE getMutexHandle(int idx, bool doCreate); + bool waitMutex(Qt::HANDLE mutex, bool doBlock); + +#endif + LockMode m_lock_mode; +}; +} +#endif diff --git a/src/qtsingleapplication/qtlockedfile_unix.cpp b/src/qtsingleapplication/qtlockedfile_unix.cpp new file mode 100644 index 0000000..976c1b9 --- /dev/null +++ b/src/qtsingleapplication/qtlockedfile_unix.cpp @@ -0,0 +1,115 @@ +/**************************************************************************** +** +** 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 +#include +#include +#include + +#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(); +} + diff --git a/src/qtsingleapplication/qtlockedfile_win.cpp b/src/qtsingleapplication/qtlockedfile_win.cpp new file mode 100644 index 0000000..5e21262 --- /dev/null +++ b/src/qtsingleapplication/qtlockedfile_win.cpp @@ -0,0 +1,211 @@ +/**************************************************************************** +** +** 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 +#include + +#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); +} diff --git a/src/qtsingleapplication/qtsingleapplication.cpp b/src/qtsingleapplication/qtsingleapplication.cpp new file mode 100644 index 0000000..d0fb15d --- /dev/null +++ b/src/qtsingleapplication/qtsingleapplication.cpp @@ -0,0 +1,347 @@ +/**************************************************************************** +** +** 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 + + +/*! + \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 +*/ diff --git a/src/qtsingleapplication/qtsingleapplication.h b/src/qtsingleapplication/qtsingleapplication.h new file mode 100644 index 0000000..049406f --- /dev/null +++ b/src/qtsingleapplication/qtsingleapplication.h @@ -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 + +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 diff --git a/src/qtsingleapplication/qtsingleapplication.pri b/src/qtsingleapplication/qtsingleapplication.pri new file mode 100644 index 0000000..6f2bced --- /dev/null +++ b/src/qtsingleapplication/qtsingleapplication.pri @@ -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 +} diff --git a/src/qtsingleapplication/qtsinglecoreapplication.cpp b/src/qtsingleapplication/qtsinglecoreapplication.cpp new file mode 100644 index 0000000..5634537 --- /dev/null +++ b/src/qtsingleapplication/qtsinglecoreapplication.cpp @@ -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() +*/ diff --git a/src/qtsingleapplication/qtsinglecoreapplication.h b/src/qtsingleapplication/qtsinglecoreapplication.h new file mode 100644 index 0000000..b87fffe --- /dev/null +++ b/src/qtsingleapplication/qtsinglecoreapplication.h @@ -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 + +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 diff --git a/src/qtsingleapplication/qtsinglecoreapplication.pri b/src/qtsingleapplication/qtsinglecoreapplication.pri new file mode 100644 index 0000000..d2d6cc3 --- /dev/null +++ b/src/qtsingleapplication/qtsinglecoreapplication.pri @@ -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) +} diff --git a/src/src.pro b/src/src.pro index 6416aa4..1310618 100644 --- a/src/src.pro +++ b/src/src.pro @@ -11,7 +11,7 @@ CONFIG += qt warn_on CONFIG += release CONFIG += link_pkgconfig -QT += dbus +QT += dbus network inst1.files += res/kylin-assistant.png inst1.path = /usr/share/pixmaps @@ -136,6 +136,7 @@ SOURCES += main.cpp\ ../component/basewidget.cpp HEADERS += mainwindow.h \ + kpplication.h \ titlewidget.h \ actionwidget.h \ homeactionwidget.h \ @@ -236,3 +237,10 @@ FORMS += \ RESOURCES += \ img.qrc + + +INCLUDEPATH += qtsingleapplication +DEPENDPATH += qtsingleapplication + +SOURCES += qtsingleapplication/qtsingleapplication.cpp qtsingleapplication/qtlocalpeer.cpp +HEADERS += qtsingleapplication/qtsingleapplication.h qtsingleapplication/qtlocalpeer.h