Panda3D
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eventQueue.h
00001 // Filename: eventQueue.h
00002 // Created by:  drose (08Feb99)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef EVENTQUEUE_H
00016 #define EVENTQUEUE_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "event.h"
00021 #include "pt_Event.h"
00022 #include "lightMutex.h"
00023 #include "pdeque.h"
00024 
00025 ////////////////////////////////////////////////////////////////////
00026 //       Class : EventQueue
00027 // Description : A queue of pending events.  As events are thrown,
00028 //               they are added to this queue; eventually, they will
00029 //               be extracted out again by an EventHandler and
00030 //               processed.
00031 ////////////////////////////////////////////////////////////////////
00032 class EXPCL_PANDA_EVENT EventQueue {
00033 PUBLISHED:
00034   EventQueue();
00035   ~EventQueue();
00036 
00037   void queue_event(CPT_Event event);
00038   void clear();
00039 
00040   bool is_queue_empty() const;
00041   bool is_queue_full() const;
00042   CPT_Event dequeue_event();
00043 
00044   INLINE static EventQueue *get_global_event_queue();
00045 
00046 private:
00047   static void make_global_event_queue();
00048   static EventQueue *_global_event_queue;
00049 
00050   typedef pdeque<CPT_Event> Events;
00051   Events _queue;
00052 
00053   LightMutex _lock;
00054 };
00055 
00056 #include "eventQueue.I"
00057 
00058 #endif
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