processcontrol.h

Go to the documentation of this file.

/***************************************************************************
 *   Copyright (C) 2006 by Tobias Koenig <tokoe@kde.org>                   *
 *   Copyright (C) 2008 by Sebastian Trueg <trueg@kde.org>                 *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU Library General Public License as       *
 *   published by the Free Software Foundation; either version 2 of the    *
 *   License, or (at your option) any later version.                       *
 *                                                                         *
 *   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 Library General Public     *
 *   License along with this program; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/

#ifndef _PROCESSCONTROL_H
#define _PROCESSCONTROL_H

#include <QtCore/QObject>
#include <QtCore/QProcess>


class ProcessControl : public QObject
{
    Q_OBJECT

public:
    enum CrashPolicy
    {
        StopOnCrash,
        RestartOnCrash
    };

    ProcessControl( QObject *parent = 0 );

    ~ProcessControl();

    void start( const QString &application, const QStringList &arguments = QStringList(),
                CrashPolicy policy = RestartOnCrash, int maxCrashes = 5 );

    void terminate( bool waitAndKill = false );

    void setCrashPolicy( CrashPolicy policy );

    bool isRunning() const;

    bool waitForStarted();

Q_SIGNALS:
    void processErrorMessages( const QString &errorMsg );

    void finished( bool clean );

private Q_SLOTS:
    void slotError( QProcess::ProcessError );
    void slotFinished( int, QProcess::ExitStatus );

private:
    void start();

    QString commandLine() const;

    QProcess mProcess;
    QString mApplication;
    QStringList mArguments;
    CrashPolicy mPolicy;
    bool mFailedToStart;
    int mCrashCount;
};

#endif