src/views/versioncontrol/updateitemstatesthread.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2009 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "updateitemstatesthread.h"
  21
  22 #include <QVector>
  23 #include <QMutexLocker>
  24
  25 UpdateItemStatesThread::UpdateItemStatesThread(KVersionControlPlugin* plugin,
  26                                                const QMap<QString, QVector<VersionControlObserver::ItemState> >& itemStates) :
  27     QThread(),
  28     m_globalPluginMutex(0),
  29     m_plugin(plugin),
  30     m_itemStates(itemStates)
  31 {
  32     // Several threads may share one instance of a plugin. A global
  33     // mutex is required to serialize the retrieval of version control
  34     // states inside run().
  35     static QMutex globalMutex;
  36     m_globalPluginMutex = &globalMutex;
  37 }
  38
  39 UpdateItemStatesThread::~UpdateItemStatesThread()
  40 {
  41 }
  42
  43 void UpdateItemStatesThread::run()
  44 {
  45     Q_ASSERT(!m_itemStates.isEmpty());
  46     Q_ASSERT(m_plugin);
  47
  48     QMutexLocker pluginLocker(m_globalPluginMutex);
  49     QMap<QString, QVector<VersionControlObserver::ItemState> >::iterator it = m_itemStates.begin();
  50     for (; it != m_itemStates.end(); ++it) {
  51         if (m_plugin->beginRetrieval(it.key())) {
  52             QVector<VersionControlObserver::ItemState>& items = it.value();
  53             const int count = items.count();
  54             for (int i = 0; i < count; ++i) {
  55                 const KFileItem& item = items.at(i).first;
  56                 const KVersionControlPlugin::ItemVersion version = m_plugin->itemVersion(item);
  57                 items[i].second = version;
  58             }
  59         }
  60
  61         m_plugin->endRetrieval();
  62     }
  63 }
  64
  65 QMap<QString, QVector<VersionControlObserver::ItemState> > UpdateItemStatesThread::itemStates() const
  66 {
  67     return m_itemStates;
  68 }
  69