TGo4BufferQueue.h

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// $Id$
//-----------------------------------------------------------------------
//       The GSI Online Offline Object Oriented (Go4) Project
//         Experiment Data Processing at EE department, GSI
//-----------------------------------------------------------------------
// Copyright (C) 2000- GSI Helmholtzzentrum fuer 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 TList;

class TGo4BufferQueue : public TGo4Queue {
 
   public:
 
      TGo4BufferQueue();
 
      TGo4BufferQueue(const char *name);
 
      virtual ~TGo4BufferQueue();

      void AddBufferFromObject(TObject *object);

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

      void FreeBuffer(TBuffer *buffer);

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

      TBuffer *WaitBuffer();

      TObject *WaitObjectFromBuffer();

      static TBuffer *CreateValueBuffer(UInt_t val);

      static Int_t DecodeValueBuffer(TBuffer *buf);
 
   private:
      void InitBuffers();

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

      TBuffer *NewEntry();

      TList *fxBufferList{nullptr}; 

      TList *fxFreeList{nullptr};   
      TMutex *fxBufferMutex{nullptr}; 

      Int_t fiMaxBuffers{0};
 
};
 
#endif //TGO4BUFFERQUEUE_H