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 <kversioncontrolplugin2.h>
  23
  24 #include <QMutexLocker>
  25
  26 UpdateItemStatesThread::UpdateItemStatesThread(KVersionControlPlugin* plugin,
  27                                                const QMap<QString, QVector<VersionControlObserver::ItemState> >& itemStates) :
  28     QThread(),
  29     m_globalPluginMutex(0),
  30     m_plugin(plugin),
  31     m_itemStates(itemStates)
  32 {
  33     // Several threads may share one instance of a plugin. A global
  34     // mutex is required to serialize the retrieval of version control
  35     // states inside run().
  36     static QMutex globalMutex;
  37     m_globalPluginMutex = &globalMutex;
  38 }
  39
  40 UpdateItemStatesThread::~UpdateItemStatesThread()
  41 {
  42 }
  43
  44 void UpdateItemStatesThread::run()
  45 {
  46     Q_ASSERT(!m_itemStates.isEmpty());
  47     Q_ASSERT(m_plugin);
  48
  49     QMutexLocker pluginLocker(m_globalPluginMutex);
  50     QMap<QString, QVector<VersionControlObserver::ItemState> >::iterator it = m_itemStates.begin();
  51     for (; it != m_itemStates.end(); ++it) {
  52         if (m_plugin->beginRetrieval(it.key())) {
  53             QVector<VersionControlObserver::ItemState>& items = it.value();
  54             const int count = items.count();
  55
  56             KVersionControlPlugin2* pluginV2 = qobject_cast<KVersionControlPlugin2*>(m_plugin);
  57             if (pluginV2) {
  58                 for (int i = 0; i < count; ++i) {
  59                     items[i].version = pluginV2->itemVersion(items[i].item);
  60                 }
  61             } else {
  62                 for (int i = 0; i < count; ++i) {
  63                     const KVersionControlPlugin::VersionState state = m_plugin->versionState(items[i].item);
  64                     items[i].version = static_cast<KVersionControlPlugin2::ItemVersion>(state);
  65                 }
  66             }
  67
  68             m_plugin->endRetrieval();
  69         }
  70     }
  71 }
  72
  73 bool UpdateItemStatesThread::lockPlugin()
  74 {
  75     return m_globalPluginMutex->tryLock(300);
  76 }
  77
  78 void UpdateItemStatesThread::unlockPlugin()
  79 {
  80     m_globalPluginMutex->unlock();
  81 }
  82
  83 QMap<QString, QVector<VersionControlObserver::ItemState> > UpdateItemStatesThread::itemStates() const
  84 {
  85     return m_itemStates;
  86 }
  87
  88 #include "updateitemstatesthread.moc"