diff options
Diffstat (limited to 'src/corelib/io/qfilesystemwatcher_symbian.cpp')
| -rw-r--r-- | src/corelib/io/qfilesystemwatcher_symbian.cpp | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/src/corelib/io/qfilesystemwatcher_symbian.cpp b/src/corelib/io/qfilesystemwatcher_symbian.cpp new file mode 100644 index 0000000000..8e8dfe5f30 --- /dev/null +++ b/src/corelib/io/qfilesystemwatcher_symbian.cpp @@ -0,0 +1,273 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qfilesystemwatcher.h" +#include "qfilesystemwatcher_symbian_p.h" +#include "qfileinfo.h" +#include "qdebug.h" +#include "private/qcore_symbian_p.h" +#include <QDir> + +#ifndef QT_NO_FILESYSTEMWATCHER + + +QT_BEGIN_NAMESPACE + +QNotifyChangeEvent::QNotifyChangeEvent(RFs &fs, const TDesC &file, + QSymbianFileSystemWatcherEngine *e, bool aIsDir, + TInt aPriority) : + CActive(aPriority), + isDir(aIsDir), + fsSession(fs), + watchedPath(file), + engine(e), + failureCount(0) +{ + if (isDir) { + fsSession.NotifyChange(ENotifyEntry, iStatus, file); + } else { + fsSession.NotifyChange(ENotifyAll, iStatus, file); + } + CActiveScheduler::Add(this); + SetActive(); +} + +QNotifyChangeEvent::~QNotifyChangeEvent() +{ + Cancel(); +} + +void QNotifyChangeEvent::RunL() +{ + if(iStatus.Int() == KErrNone) { + failureCount = 0; + } else { + qWarning("QNotifyChangeEvent::RunL() - Failed to order change notifications: %d", iStatus.Int()); + failureCount++; + } + + // Re-request failed notification once, but if it won't start working, + // we can't do much besides just not request any more notifications. + if (failureCount < 2) { + if (isDir) { + fsSession.NotifyChange(ENotifyEntry, iStatus, watchedPath); + } else { + fsSession.NotifyChange(ENotifyAll, iStatus, watchedPath); + } + SetActive(); + + if (!failureCount) { + int err; + QT_TRYCATCH_ERROR(err, engine->emitPathChanged(this)); + if (err != KErrNone) + qWarning("QNotifyChangeEvent::RunL() - emitPathChanged threw exception (Converted error code: %d)", err); + } + } +} + +void QNotifyChangeEvent::DoCancel() +{ + fsSession.NotifyChangeCancel(iStatus); +} + +QSymbianFileSystemWatcherEngine::QSymbianFileSystemWatcherEngine() : + watcherStarted(false) +{ + moveToThread(this); +} + +QSymbianFileSystemWatcherEngine::~QSymbianFileSystemWatcherEngine() +{ + stop(); +} + +QStringList QSymbianFileSystemWatcherEngine::addPaths(const QStringList &paths, QStringList *files, + QStringList *directories) +{ + QMutexLocker locker(&mutex); + QStringList p = paths; + + startWatcher(); + + QMutableListIterator<QString> it(p); + while (it.hasNext()) { + QString path = it.next(); + QFileInfo fi(path); + if (!fi.exists()) + continue; + + bool isDir = fi.isDir(); + if (isDir) { + if (directories->contains(path)) + continue; + } else { + if (files->contains(path)) + continue; + } + + // Use absolute filepath as relative paths seem to have some issues. + QString filePath = fi.absoluteFilePath(); + if (isDir && filePath.at(filePath.size() - 1) != QChar(L'/')) { + filePath += QChar(L'/'); + } + + currentAddEvent = NULL; + QMetaObject::invokeMethod(this, + "addNativeListener", + Qt::QueuedConnection, + Q_ARG(QString, filePath)); + + syncCondition.wait(&mutex); + if (currentAddEvent) { + currentAddEvent->isDir = isDir; + + activeObjectToPath.insert(currentAddEvent, path); + it.remove(); + + if (isDir) + directories->append(path); + else + files->append(path); + } + } + + return p; +} + +QStringList QSymbianFileSystemWatcherEngine::removePaths(const QStringList &paths, + QStringList *files, + QStringList *directories) +{ + QMutexLocker locker(&mutex); + + QStringList p = paths; + QMutableListIterator<QString> it(p); + while (it.hasNext()) { + QString path = it.next(); + + currentRemoveEvent = activeObjectToPath.key(path); + if (!currentRemoveEvent) + continue; + activeObjectToPath.remove(currentRemoveEvent); + + QMetaObject::invokeMethod(this, + "removeNativeListener", + Qt::QueuedConnection); + + syncCondition.wait(&mutex); + + it.remove(); + + files->removeAll(path); + directories->removeAll(path); + } + + return p; +} + +void QSymbianFileSystemWatcherEngine::emitPathChanged(QNotifyChangeEvent *e) +{ + QMutexLocker locker(&mutex); + + QString path = activeObjectToPath.value(e); + QFileInfo fi(path); + + if (e->isDir) + emit directoryChanged(path, !fi.exists()); + else + emit fileChanged(path, !fi.exists()); +} + +void QSymbianFileSystemWatcherEngine::stop() +{ + quit(); + wait(); +} + +// This method must be called inside mutex +void QSymbianFileSystemWatcherEngine::startWatcher() +{ + if (!watcherStarted) { + setStackSize(0x5000); + start(); + syncCondition.wait(&mutex); + watcherStarted = true; + } +} + + +void QSymbianFileSystemWatcherEngine::run() +{ + mutex.lock(); + syncCondition.wakeOne(); + mutex.unlock(); + + exec(); + + foreach(QNotifyChangeEvent *e, activeObjectToPath.keys()) { + e->Cancel(); + delete e; + } + + activeObjectToPath.clear(); +} + +void QSymbianFileSystemWatcherEngine::addNativeListener(const QString &directoryPath) +{ + QMutexLocker locker(&mutex); + QString nativeDir(QDir::toNativeSeparators(directoryPath)); + TPtrC ptr(qt_QString2TPtrC(nativeDir)); + currentAddEvent = new QNotifyChangeEvent(qt_s60GetRFs(), ptr, this, directoryPath.endsWith(QChar(L'/'), Qt::CaseSensitive)); + syncCondition.wakeOne(); +} + +void QSymbianFileSystemWatcherEngine::removeNativeListener() +{ + QMutexLocker locker(&mutex); + currentRemoveEvent->Cancel(); + delete currentRemoveEvent; + currentRemoveEvent = NULL; + syncCondition.wakeOne(); +} + + +QT_END_NAMESPACE +#endif // QT_NO_FILESYSTEMWATCHER |