TGo4BufferQueue.h

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// $Id: TGo4BufferQueue.h 695 2011-01-19 15:16:14Z linev $
//-----------------------------------------------------------------------
//       The GSI Online Offline Object Oriented (Go4) Project
//         Experiment Data Processing at EE department, GSI
//-----------------------------------------------------------------------
// Copyright (C) 2000- GSI Helmholtzzentrum für Schwerionenforschung GmbH
//                     Planckstr. 1, 64291 Darmstadt, Germany
// Contact:            http://go4.gsi.de
//-----------------------------------------------------------------------
// This software can be used under the license agreements as stated
// in Go4License.txt file which is part of the distribution.
//-----------------------------------------------------------------------

#ifndef TGO4BUFFERQUEUE_H
#define TGO4BUFFERQUEUE_H

#include "TGo4Queue.h"

class TMutex;
class TIterator;
class TList;

class TGo4BufferQueue : public TGo4Queue {

   public:

      TGo4BufferQueue() ;

      TGo4BufferQueue(const char* name);

      void AddBufferFromObject(TObject * object);

      void AddBuffer(TBuffer * buffer, Bool_t clone=kFALSE);

      void FreeBuffer(TBuffer * buffer);

      virtual void Clear(Option_t* opt="");

      TBuffer * WaitBuffer();

      TObject * WaitObjectFromBuffer();

      virtual ~TGo4BufferQueue() ;

      static TBuffer* CreateValueBuffer(UInt_t val);

      static Int_t DecodeValueBuffer(TBuffer* buf);


      static const Int_t fgiISOWNER;

   private:
      void InitBuffers();

      void Realloc(TBuffer* buffer, Int_t oldsize, Int_t newsize);

      TBuffer* NewEntry();



      TList* fxBufferList; 

      TList* fxFreeList;   
      TMutex * fxBufferMutex; 
      Int_t fiOverflowcount;

      Int_t fiMaxBuffers;

};

#endif //TGO4BUFFERQUEUE_H