CrystalSpace

Public API Reference

csutil/csevcord.h

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00001 /*
00002     Copyright (C) 2000 by Jorrit Tyberghein
00003     Written by Michael Dale Long.
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public
00016     License along with this library; if not, write to the Free
00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 */
00019 
00020 #ifndef __CS_CSEVCORD_H__
00021 #define __CS_CSEVCORD_H__
00022 
00027 #include "csextern.h"
00028 #include "csutil/scf_implementation.h"
00029 #include "iutil/event.h"
00030 
00031 struct iEventHandler;
00032 
00033 class csEventOutlet;
00034 
00038 class CS_CRYSTALSPACE_EXPORT csEventCord : 
00039   public scfImplementation1<csEventCord, iEventCord>
00040 {
00041 protected:
00043   volatile bool pass;
00044 
00046   csEventID name;
00047 
00051   struct PluginData
00052   {
00053     iEventHandler *plugin;
00054     int priority;
00055     PluginData *next;
00056   };
00057 
00059   PluginData *plugins;
00060 
00062   volatile int SpinLock;
00063 
00065   inline void Lock() { while (SpinLock) {} SpinLock++; }
00067   inline void Unlock() { SpinLock--; }
00068 
00070   friend class csEventOutlet;
00071   bool Post(iEvent*);
00072 
00073 public:
00075   csEventCord(csEventID, bool=false);
00076 
00078   virtual ~csEventCord();
00079 
00081   virtual int Insert(iEventHandler*, int priority);
00082 
00084   virtual void Remove(iEventHandler*);
00085 
00087   virtual bool GetPass() const { return pass; }
00088 
00090   virtual void SetPass(bool flag) { pass = flag; }
00091 
00093   virtual csEventID GetName() const { return name; }
00094 };
00095 
00096 #endif // __CS_CSEVCORD_H__

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