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Diffstat (limited to 'ace/Demux/QtReactor.h')
-rw-r--r-- | ace/Demux/QtReactor.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/ace/Demux/QtReactor.h b/ace/Demux/QtReactor.h new file mode 100644 index 00000000000..7b6cb0684cb --- /dev/null +++ b/ace/Demux/QtReactor.h @@ -0,0 +1,153 @@ +/* -*- C++ -*- */ + +//============================================================================= +/** + * @file QtReactor.h + * + * $Id$ + * + * @author Hamish Friedlander <ullexco@wave.co.nz> + * @author Balachandran Natarajan <bala@cs.wustl.edu> + */ +//============================================================================= + +#ifndef ACE_QTREACTOR_H +#define ACE_QTREACTOR_H +#include "ace/pre.h" + + +#include "ace/Select_Reactor.h" + +#if !defined (ACE_LACKS_PRAGMA_ONCE) +# pragma once +#endif /* ACE_LACKS_PRAGMA_ONCE */ + +#if defined (ACE_HAS_QT) +#include "ace/Map_Manager.h" + +// Qttoolkit specific includes. +#include <qapplication.h> +#include <qobject.h> +#include <qsocketnotifier.h> +#include <qtimer.h> + +/** + * @class ACE_QtReactor + * + * @brief An object-oriented event demultiplexor and event handler + * dispatcher that uses the Qt Library. This class declaration + * also uses the extension facilities provided by the Qt. So, + * readers of the class declaration should not be upset with + * the appearence of the Keywords like Q_OBJECT, private slots + * etc. They are specific to Qt which uses these as a call back + * methods implementation mechanism. + */ +class ACE_Export ACE_QtReactor : public QObject, public ACE_Select_Reactor +{ + + Q_OBJECT + + public: + // = Initialization and termination methods. + ACE_QtReactor (QApplication *qapp = NULL, + size_t size = DEFAULT_SIZE, + int restart = 0, + ACE_Sig_Handler *handler = 0); + + virtual ~ACE_QtReactor (void); + + void qapplication (QApplication *qapp); + + // = Timer operations. + virtual long schedule_timer (ACE_Event_Handler *handler, + const void *arg, + const ACE_Time_Value &delay_time, + const ACE_Time_Value &interval); + + virtual int cancel_timer (ACE_Event_Handler *handler, + int dont_call_handle_close = 1); + + virtual int cancel_timer (long timer_id, + const void **arg = 0, + int dont_call_handle_close = 1); + + protected: + + // = Register timers/handles with Qt + + /// Register a single <handler>. + virtual int register_handler_i (ACE_HANDLE handle, + ACE_Event_Handler *handler, + ACE_Reactor_Mask mask); + + /// Register a set of <handlers> with Qt. + virtual int register_handler_i (const ACE_Handle_Set &handles, + ACE_Event_Handler *handler, + ACE_Reactor_Mask mask); + + + /// Remove the <handler> associated with this <handle>. + virtual int remove_handler_i (ACE_HANDLE handle, + ACE_Reactor_Mask mask); + + /// Remove a set of <handles>. + virtual int remove_handler_i (const ACE_Handle_Set &handles, + ACE_Reactor_Mask mask); + + /// Wait for events to occur. + virtual int wait_for_multiple_events (ACE_Select_Reactor_Handle_Set &handle_set, + ACE_Time_Value *max_wait_time); + + virtual int QtWaitForMultipleEvents (int width, + ACE_Select_Reactor_Handle_Set &wait_set, + ACE_Time_Value *max_wait_time); + + // Wait for Qt events to occur + + /// Some Qt stuff that we need to have + QApplication *qapp_ ; + + /// Typedef of a map. + typedef ACE_Map_Manager<ACE_HANDLE, QSocketNotifier *, ACE_Null_Mutex> MAP; + + /// A notifier for a read + MAP read_notifier_; + + /// A write notifier + MAP write_notifier_; + + /// An exception notifier + MAP exception_notifier_; + + /// The timer class that would provide timer-sgnals & single-shot timers + QTimer *qtime_ ; + + private: + /// This method ensures there's an Qt timeout for the first timeout + /// in the Reactor's Timer_Queue. + void reset_timeout (void); + + /// Deny access since member-wise won't work... + ACE_QtReactor (const ACE_QtReactor &); + ACE_QtReactor &operator= (const ACE_QtReactor &); + + private slots: + + // These are all part of the communication mechanism adopted in Qt. + /// Dispatch a Read Event + void read_event (int FD); + + /// Dispatch a Write Event + void write_event (int FD); + + /// Dispatch an exception event + void exception_event (int FD); + + /// Dispach a timeout event + void timeout_event (void); +}; + +#endif /*ACE_HAS_QT */ + +#include "ace/post.h" +#endif /* ACE_QTREACTOR_H */ |