VFramesBuffer

class description - source file - inheritance tree

class VFramesBuffer 

    private:

      virtual void PutInBuffer(FrameH* frame, VMetaData* meta)
      virtual void Rearrange(Int_t ibuf)

    public:

        VFramesBuffer VFramesBuffer(const VFramesBuffer&)
        VFramesBuffer VFramesBuffer(VFrameChannel* vfrdb)
         virtual void ~VFramesBuffer()
       static TClass* Class()
      virtual FrameH* GetFrame(VMetaData* meta)
      virtual FrameH* GetFrameCopy(VMetaData* meta)
      virtual FrVect* GetVect(VMetaData* meta, char* vectname)
      virtual FrVect* GetVectCopy(VMetaData* meta, char* vectname)
      virtual TClass* IsA() const
         virtual void ShowMembers(TMemberInspector& insp, char* parent)
         virtual void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)

Data Members

    private:

               Int_t mBufSize       Size of the buffer
            FrameH** mFramesBuf     Array of memory cached frames
          VMetaData* mMetaData      Meta data of cached frames
              Int_t* mIsComplete    If a frame is loaded by part, it is incomplete
               Int_t mBufCur        Current position of the buffer index (newest frame)
      VFrameChannel* mFrameChannel  Database using this buffer

Class Description

                                                                      
 VFramesBuffer                                                        
                                                                      
 Buffer of frames used as a cache when reading frames
void PutInBuffer(FrameH* frame, VMetaData* meta) 
 Puts frame in the buffer, drops the oldest one.
void Rearrange(Int_t ifrinbuf) 
 Rearrange the buffer so that the element ifrinbuf becomes the first.
 This element is in general the last retrieved one
FrameH* GetFrame(VMetaData* meta) 
 Gets frame pointed to by metadata at position imeta.
FrVect* GetVectCopy(VMetaData* meta, char* vectname) // Get a copy of the vector in the frame pointed to by metadata at position // imeta which name is "vectname". // The string vectname indicates the type (adc, proc, sim) and // the name of the series to be extracted. The convention for the format // is "type.name". // For example "adc.IFO_DMRO" is a good format.
FrVect* GetVect(VMetaData* meta, char* vectname) 
 Get vector in the frame pointed to by metadata at position imeta
 which name is "vectname".
   The string vectname indicates the type (adc, proc, sim) and
 the name of the series to be extracted. The convention for the format
 is "type.name".
   For example "adc.IFO_DMRO" is a good format.
FrameH* GetFrameCopy(VMetaData* meta) 
 Gets a copy of the frame pointed to by metadata at position imeta.
 This is used when one wants to keep control over deletion of his frames



Inline Functions

        VFramesBuffer VFramesBuffer(VFrameChannel* vfrdb)
              TClass* Class()
              TClass* IsA() const
                 void ShowMembers(TMemberInspector& insp, char* parent)
                 void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)
        VFramesBuffer VFramesBuffer(const VFramesBuffer&)
                 void ~VFramesBuffer()
Last update: Tue Jul 1 17:28:47 2003

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