| -rw-r--r-- | libopie2/opiecore/linux/ofilenotify.cpp | 40 | ||||
| -rw-r--r-- | libopie2/opiecore/linux/ofilenotify.h | 3 |
2 files changed, 25 insertions, 18 deletions
diff --git a/libopie2/opiecore/linux/ofilenotify.cpp b/libopie2/opiecore/linux/ofilenotify.cpp index a7820ee..68c5a96 100644 --- a/libopie2/opiecore/linux/ofilenotify.cpp +++ b/libopie2/opiecore/linux/ofilenotify.cpp @@ -215,74 +215,80 @@ void OFileNotification::stop() OFileNotificationType OFileNotification::type() const { return _type; } QString OFileNotification::path() const { return _path; } bool OFileNotification::isSingleShot() const { return !_multi; } bool OFileNotification::activate( const OFileNotificationEvent* e ) { qDebug( "OFileNotification::activate(): e = ( %s, %d, 0x%08x, %d, %s )", (const char*) _path, e->descriptor(), e->mask(), e->cookie(), (const char*) e->name() ); + //FIXME: Should we really deliver QueueOverflow and/or Ignore to user level code? + // dumb signal _signal.activate(); // generic signal emit triggered( _path, e->mask(), e->name() ); // specialized signals switch ( e->mask() ) { - case Access: emit accessed( _path ); break; - case Modify: emit modified( _path ); break; - case Attrib: emit attributed( _path); break; - case CloseWrite: emit closed( _path, true ); break; - case CloseNoWrite: emit closed( _path, false ); break; - case Open: emit opened( _path ); break; - case MovedFrom: emit movedFrom( _path, e->name() ); break; - case MovedTo: emit movedTo( _path, e->name() ); break; - case DeleteSubdir: emit deletedSubdir( _path, e->name() ); break; - case DeleteFile: emit deletedFile( _path, e->name() ); break; - case CreateSubdir: emit createdSubdir( _path, e->name() ); break; - case CreateFile: emit createdFile( _path, e->name() ); break; - case DeleteSelf: emit deleted( _path ); break; - case Unmount: emit unmounted( _path ); break; + case Access: emit accessed( _path ); break; + case Modify: emit modified( _path ); break; + case Attrib: emit attributed( _path); break; + case CloseWrite: emit closed( _path, true ); break; + case CloseNoWrite: emit closed( _path, false ); break; + case Open: emit opened( _path ); break; + case MovedFrom: emit movedFrom( _path, e->name() ); break; + case MovedTo: emit movedTo( _path, e->name() ); break; + case DeleteSubdir: emit deletedSubdir( _path, e->name() ); break; + case DeleteFile: emit deletedFile( _path, e->name() ); break; + case CreateSubdir: emit createdSubdir( _path, e->name() ); break; + case CreateFile: emit createdFile( _path, e->name() ); break; + case DeleteSelf: emit deleted( _path ); break; + case Unmount: emit unmounted( _path ); break; + case _QueueOverflow: qFatal( "OFileNotification::activate() - Inotify Event Queue Overload!" ); break; + case _Ignored: qWarning( "OFileNotification::activate() - Further Events for '%s' will be ignored", (const char*) _path ); break; default: assert( 0 ); } + delete e; + if ( !_multi ) stop(); return true; } bool OFileNotification::singleShot( const QString& path, QObject* receiver, const char* member, OFileNotificationType type ) { OFileNotification* ofn = new OFileNotification(); ofn->_signal.connect( receiver, member ); return ofn->watch( path, true, type ) != -1; } void OFileNotification::inotifyEventHandler() { qDebug( "OFileNotification::inotifyEventHandler(): reached." ); char buffer[16384]; ssize_t buffer_i; struct inotify_event *pevent, *event; ssize_t r; size_t event_size; int count = 0; @@ -296,97 +302,97 @@ void OFileNotification::inotifyEventHandler() while ( buffer_i < r ) { pevent = (struct inotify_event *)&buffer[buffer_i]; event_size = sizeof(struct inotify_event) + pevent->len; OFileNotificationEvent* e = new OFileNotificationEvent( notification_list[ pevent->wd ], pevent->wd, pevent->mask, pevent->cookie, pevent->len ? pevent->name : 0 ); e->activate(); buffer_i += event_size; count++; } qDebug( "OFileNotification::inotifyEventHandler(): processed %d events", count ); } bool OFileNotification::registerEventHandler() { OFileNotification::_fd = ::open( INOTIFY_DEVICE, O_RDONLY ); if ( OFileNotification::_fd < 0 ) { qWarning( "OFileNotification::registerEventHandler(): couldn't register event handler: %s", strerror( errno ) ); return false; } - OFileNotification::_sn = new QSocketNotifier( _fd, QSocketNotifier::Read, this, "inotify event" ); + OFileNotification::_sn = new QSocketNotifier( _fd, QSocketNotifier::Read ); connect( OFileNotification::_sn, SIGNAL( activated(int) ), this, SLOT( inotifyEventHandler() ) ); qDebug( "OFileNotification::registerEventHandler(): done" ); return true; } void OFileNotification::unregisterEventHandler() { if ( _sn ) delete _sn; if ( OFileNotification::_fd ) ::close( OFileNotification::_fd ); qDebug( "OFileNotification::unregisterEventHandler(): done" ); } //================================================================================================= // ODirNotification //================================================================================================= ODirNotification::ODirNotification( QObject* parent, const char* name ) :QObject( parent, name ), _topfilenotification( 0 ), _type( Nothing ), _depth( -123 ) { qDebug( "ODirNotification::ODirNotification()" ); } ODirNotification::~ODirNotification() { qDebug( "ODirNotification::~ODirNotification()" ); } -/* +/** Love-Trowbridge recursive directory scanning algorithm: Step 1. Start at initial directory foo. Add watch. Step 2. Setup handlers for watch created in Step 1. Specifically, ensure that a directory created in foo will result in a handled CREATE_SUBDIR event. Step 3. Read the contents of foo. Step 4. For each subdirectory of foo read in step 3, repeat step 1. Step 5. For any CREATE_SUBDIR event on bar, if a watch is not yet created on bar, repeat step 1 on bar. -*/ +**/ int ODirNotification::watch( const QString& path, bool sshot, OFileNotificationType type, int recurse ) { if ( _type == Nothing ) _type = type; // only set it once - for the top level call OFileNotificationType subtype = ( recurse != 0 ) ? (OFileNotificationType) int( _type | CreateSubdir ) : _type; qDebug( "ODirNotification::watch( %s, %d, 0x%08x, %d )", (const char*) path, sshot, subtype, recurse ); OFileNotification* fn = new OFileNotification( this, "ODirNotification delegate" ); int result = fn->startWatching( path, sshot, subtype ); if ( result != -1 ) { if ( !_topfilenotification ) _topfilenotification = fn; // only set it once - for the top level call if ( _depth == -123 ) _depth = recurse; // only set it once - for the top level call connect( fn, SIGNAL( triggered( const QString&, unsigned int, const QString& ) ), this, SIGNAL( triggered( const QString&, unsigned int, const QString& ) ) ); connect( fn, SIGNAL( accessed( const QString& ) ), this, SIGNAL( accessed( const QString& ) ) ); connect( fn, SIGNAL( modified( const QString& ) ), this, SIGNAL( modified( const QString& ) ) ); connect( fn, SIGNAL( attributed( const QString& ) ), this, SIGNAL( attributed( const QString& ) ) ); connect( fn, SIGNAL( closed( const QString&, bool ) ), this, SIGNAL( closed( const QString&, bool ) ) ); connect( fn, SIGNAL( opened( const QString& ) ), this, SIGNAL( opened( const QString& ) ) ); connect( fn, SIGNAL( movedTo( const QString&, const QString& ) ), this, SIGNAL( movedTo( const QString&, const QString& ) ) ); connect( fn, SIGNAL( movedFrom( const QString&, const QString& ) ), this, SIGNAL( movedFrom( const QString&, const QString& ) ) ); connect( fn, SIGNAL( deletedSubdir( const QString&, const QString& ) ), this, SIGNAL( deletedSubdir( const QString&, const QString& ) ) ); diff --git a/libopie2/opiecore/linux/ofilenotify.h b/libopie2/opiecore/linux/ofilenotify.h index 17e6b5d..c713b30 100644 --- a/libopie2/opiecore/linux/ofilenotify.h +++ b/libopie2/opiecore/linux/ofilenotify.h @@ -236,49 +236,50 @@ class OFileNotification : public QObject private: bool registerEventHandler(); void unregisterEventHandler(); QString _path; OFileNotificationType _type; QSignal _signal; bool _active; bool _multi; static QSocketNotifier* _sn; int _wd; // inotify watch descriptor static int _fd; // inotify device descriptor friend class OFileNotificationEvent; }; /*====================================================================================== * ODirNotification *======================================================================================*/ /** * @brief Represents a directory notification * * This class allows to watch for events happening to directories - * It uses the OFileNotification class + * It uses the OFileNotification class and (for recursive watches) + * implements the Love-Trowbridge recursive directory scanning algorithm. * * @see http://www.kernel.org/pub/linux/kernel/people/rml/inotify/ * * @author Michael 'Mickey' Lauer <mickey@vanille.de> * **/ class ODirNotification : public QObject { Q_OBJECT public: ODirNotification( QObject* parent = 0, const char* name = 0 ); ~ODirNotification(); /** * Starts to watch for @a type changes to @a path. Recurse @a recurse levels down the filesystem tree, * use 0 for no recursion and -1 for unlimited recursion. * Set @a sshot to True if you want to be notified only once. **/ int watch( const QString& path, bool sshot = false, OFileNotificationType type = Modify, int recurse = 0 ); signals: /** * This signal is emitted if an event happens of the specified type happens to the directory being watched. |