ChangeLogTag: Fri Oct 15 17:26:08 1999 Balachandran Natarajan <bala@cs.wustl.edu>

1 files changed, 150 insertions, 0 deletions

diff --git a/ace/QtReactor.h b/ace/QtReactor.h
new file mode 100644
index 00000000000..e2420f4e7dc
--- /dev/null
+++ b/ace/QtReactor.h
@@ -0,0 +1,150 @@
+/* -*- C++ -*- */
+// $Id$
+
+// ============================================================================
+//
+// = LIBRARY
+//    ace
+//
+// = FILENAME
+//    QtReactor.h
+//
+// = AUTHOR
+//    Hamish Friedlander <ullexco@wave.co.nz>
+//    integrated in to ACE by Balachandran Natarajan <bala@cs.wustl.edu>
+// ============================================================================
+#ifndef ACE_QTREACTOR_H
+#define ACE_QTREACTOR_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_Export ACE_QtReactor : public QObject, public ACE_Select_Reactor
+{
+  // = TITLE
+  //     An object-oriented event demultiplexor and event handler
+  //     dispatcher that uses the Qt Library. This class declaration
+  //     also uses the extnsion 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.
+
+  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 &delta_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
+ 
+  virtual int register_handler_i (ACE_HANDLE handle,
+                                  ACE_Event_Handler *handler,
+                                  ACE_Reactor_Mask mask);
+  // Register a single <handler>.
+  
+  virtual int register_handler_i (const ACE_Handle_Set &handles,
+                                  ACE_Event_Handler *handler,
+                                  ACE_Reactor_Mask mask);
+  // Register a set of <handlers> with Qt.
+  
+  
+  virtual int remove_handler_i (ACE_HANDLE handle,
+                                ACE_Reactor_Mask mask);
+  // Remove the <handler> associated with this <handle>.
+
+  virtual int remove_handler_i (const ACE_Handle_Set &handles,
+                                ACE_Reactor_Mask mask);
+  // Remove a set of <handles>.
+
+  virtual int wait_for_multiple_events (ACE_Select_Reactor_Handle_Set &handle_set,
+                                        ACE_Time_Value *max_wait_time);
+  // Wait for events to occur.
+
+  virtual int QtWaitForMultipleEvents (int width,
+                                       ACE_Select_Reactor_Handle_Set &wait_set,
+                                       ACE_Time_Value *max_wait_time);
+  
+  // Wait for Qt events to occur
+
+  QApplication *qapp_ ;
+  // Some Qt stuff that we need to have
+
+  typedef ACE_Map_Manager<ACE_HANDLE, QSocketNotifier *, ACE_Null_Mutex> MAP;
+  // Typedef of a map.
+
+  MAP read_notifier_;
+  // A notifier for a read
+
+  MAP write_notifier_;
+  // A write notifier
+  
+  MAP exception_notifier_;
+  // An exception notifier
+
+  QTimer *qtime_ ;
+  // The timer class that would provide timer-sgnals & single-shot timers
+
+ private: 
+  void reset_timeout (void);
+  // This method ensures there's an Qt timeout for the first timeout
+  // in the Reactor's Timer_Queue.
+  
+  ACE_QtReactor (const ACE_QtReactor &);
+  ACE_QtReactor &operator= (const ACE_QtReactor &);
+  // Deny access since member-wise won't work...
+
+ private slots:
+ 
+    // These are all part of the communication mechanism adopted in Qt.
+  void read_event (int FD);
+  // Dispatch a Read Event
+
+  void write_event (int FD);
+  // Dispatch a Write Event
+
+  void exception_event (int FD);
+  // Dispatch an exception event 
+
+  void timeout_event (void);
+  // Dispach a timeout event
+};
+
+#endif /*ACE_HAS_QT */
+
+#endif /* ACE_QTREACTOR_H */