TMapFile

class TMapFile : public TObject

    protected:

                   TMapFile(const char* name, const char* title, Option_t* option, Int_t size, TMapFile*& newMapFile)
                   TMapFile(const TMapFile& f, Long_t offset = 0)
                   TMapFile()
             Int_t AcquireSemaphore()
              void CreateSemaphore(Int_t pid = 0)
              void DeleteSemaphore()
         TMapFile* FindShadowMapFile()
             Int_t GetBestBuffer()
              void InitDirectory()
      static void* MapToAddress()
              void operator=(const TMapFile& rhs)
             Int_t ReleaseSemaphore()
          TObject* Remove(TObject* obj, Bool_t lock)
          TObject* Remove(const char* name, Bool_t lock)
              void SumBuffer(Int_t bufsize)

    public:

                  virtual ~TMapFile()
                     void Add(const TObject* obj, const char* name)
             virtual void Browse(TBrowser* b)
                   Bool_t cd(const char* path = "0")
           static TClass* Class()
                     void Close(Option_t* option)
         static TMapFile* Create(const char* name, Option_t* option = "READ", Int_t size = kDefaultMapSize, const char* title)
                 TObject* Get(const char* name, TObject* retObj = 0)
                    void* GetBaseAddr() const
                    void* GetBreakval() const
              TDirectory* GetDirectory() const
                    Int_t GetFd() const
                 TMapRec* GetFirst() const
                 TMapRec* GetLast() const
                    void* GetMmallocDesc() const
      virtual const char* GetName() const
      virtual const char* GetOption() const
                    Int_t GetSize() const
      virtual const char* GetTitle() const
          virtual TClass* IsA() const
           virtual Bool_t IsFolder() const
                   Bool_t IsWritable() const
             virtual void ls(Option_t* option) const
              static void operator delete(void* vp)
                    void* OrgAddress(void* addr) const
             virtual void Print(Option_t* option) const
                 TObject* Remove(TObject* obj)
                 TObject* Remove(const char* name)
                     void RemoveAll()
              static void SetMapAddress(Long_t addr)
             virtual void ShowMembers(TMemberInspector& insp, char* parent)
             virtual void Streamer(TBuffer& b)
                     void StreamerNVirtual(TBuffer& b)
                     void Update(TObject* obj = 0)
         static TMapFile* WhichMapFile(void* addr)

Data Members

    private:

              Int_t fFd            Descriptor of mapped file
              Int_t fVersion       ROOT version (or -1 for shadow map file)
              char* fName          Name of mapped file
              char* fTitle         Title of mapped file
              char* fOption        Directory creation options
              void* fMmallocDesc   Pointer to mmalloc descriptor
            ULong_t fBaseAddr      Base address of mapped memory region
              Int_t fSize          Original start size of memory mapped region
           TMapRec* fFirst         List of streamed objects is shared memory
           TMapRec* fLast          Last object in list of shared objects
             Long_t fOffset        Offset in bytes for region mapped by reader
        TDirectory* fDirectory     Pointer to directory associated to this mapfile
             TList* fBrowseList    List of KeyMapFile objects
             Bool_t fWritable      TRUE if mapped file opened in RDWR mode
              Int_t fSemaphore     Modification semaphore (or getpid() for WIN32)
            ULong_t fhSemaphore    HANDLE of WIN32 Mutex object to implement semaphore
           TObject* fGetting       Don't deadlock in update mode, when from Get() Add() is called
              Int_t fWritten       Number of objects written sofar
           Double_t fSumBuffer     Sum of buffer sizes of objects written sofar
           Double_t fSum2Buffer    Sum of squares of buffer sizes of objects written so far
      static Long_t fgMapAddress   Map to this address, set address via SetMapAddress()
       static void* fgMmallocDesc  Used in Close() and operator delete()

    public:

      static const enum TMapFile:: kDefaultMapSize  

Class Description