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| |
| #ifndef QFILESYSTEMWATCHER_FSEVENTS_P_H |
| #define QFILESYSTEMWATCHER_FSEVENTS_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include "qfilesystemwatcher_p.h" |
| |
| #include <QtCore/qmutex.h> |
| #include <QtCore/qhash.h> |
| #include <QtCore/qthread.h> |
| #include <QtCore/qvector.h> |
| #include <QtCore/qsocketnotifier.h> |
| |
| #include <dispatch/dispatch.h> |
| #include <CoreServices/CoreServices.h> |
| |
| QT_REQUIRE_CONFIG(filesystemwatcher); |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QFseventsFileSystemWatcherEngine : public QFileSystemWatcherEngine |
| { |
| Q_OBJECT |
| public: |
| ~QFseventsFileSystemWatcherEngine(); |
| |
| static QFseventsFileSystemWatcherEngine *create(QObject *parent); |
| |
| QStringList addPaths(const QStringList &paths, QStringList *files, QStringList *directories); |
| QStringList removePaths(const QStringList &paths, QStringList *files, QStringList *directories); |
| |
| void processEvent(ConstFSEventStreamRef streamRef, size_t numEvents, char **eventPaths, const FSEventStreamEventFlags eventFlags[], const FSEventStreamEventId eventIds[]); |
| |
| Q_SIGNALS: |
| void emitFileChanged(const QString &path, bool removed); |
| void emitDirectoryChanged(const QString &path, bool removed); |
| void scheduleStreamRestart(); |
| |
| private slots: |
| void doEmitFileChanged(const QString &path, bool removed); |
| void doEmitDirectoryChanged(const QString &path, bool removed); |
| bool restartStream(); |
| |
| private: |
| struct Info { |
| QString origPath; |
| timespec ctime; |
| mode_t mode; |
| QString watchedPath; |
| |
| Info(): mode(0) |
| { |
| ctime.tv_sec = 0; |
| ctime.tv_nsec = 0; |
| } |
| |
| Info(const QString &origPath, const timespec &ctime, mode_t mode, const QString &watchedPath) |
| : origPath(origPath) |
| , ctime(ctime) |
| , mode(mode) |
| , watchedPath(watchedPath) |
| {} |
| }; |
| typedef QHash<QString, Info> InfoByName; |
| typedef QHash<QString, InfoByName> FilesByPath; |
| struct DirInfo { |
| Info dirInfo; |
| InfoByName entries; |
| }; |
| typedef QHash<QString, DirInfo> DirsByName; |
| typedef QHash<QString, qint64> PathRefCounts; |
| |
| struct WatchingState { |
| // These fields go hand-in-hand. FSEvents watches paths, and there is no use in watching |
| // the same path multiple times. So, the "refcount" on a path is the number of watched |
| // files that have the same path, plus the number of directories that have the same path. |
| // |
| // If the stream fails to start after adding files/directories, the watcher will try to |
| // keep watching files/directories that it was already watching. It does that by restoring |
| // the previous WatchingState and restarting the stream. |
| FilesByPath watchedFiles; |
| DirsByName watchedDirectories; |
| PathRefCounts watchedPaths; |
| }; |
| |
| QFseventsFileSystemWatcherEngine(QObject *parent); |
| bool startStream(); |
| void stopStream(bool isStopped = false); |
| InfoByName scanForDirEntries(const QString &path); |
| bool derefPath(const QString &watchedPath); |
| bool checkDir(DirsByName::iterator &it); |
| bool rescanDirs(const QString &path); |
| bool rescanFiles(InfoByName &filesInPath); |
| bool rescanFiles(const QString &path); |
| |
| QMutex lock; |
| dispatch_queue_t queue; |
| FSEventStreamRef stream; |
| FSEventStreamEventId lastReceivedEvent; |
| WatchingState watchingState; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QFILESYSTEMWATCHER_FSEVENTS_P_H |