TBuffer+¶
继承 TObject
Buffer base class used for serializing objects.
class¶
enum EMode { kRead = 0, kWrite = 1 };
enum { kIsOwner = BIT(16) }; //if set TBuffer owns fBuffer
enum { kCannotHandleMemberWiseStreaming = BIT(17)}; //if set TClonesArray should not use member wise streaming
enum { kInitialSize = 1024, kMinimalSize = 128 };
TBuffer(EMode mode);
TBuffer(EMode mode, Int_t bufsiz);
TBuffer(EMode mode, Int_t bufsiz, void *buf, Bool_t adopt = kTRUE, ReAllocCharFun_t reallocfunc = 0);
virtual ~TBuffer();
Int_t GetBufferVersion() const { return fVersion; }
Bool_t IsReading() const { return (fMode & kWrite) == 0; }
Bool_t IsWriting() const { return (fMode & kWrite) != 0; }
void SetReadMode();
void SetWriteMode();
void SetBuffer(void *buf, UInt_t bufsiz = 0, Bool_t adopt = kTRUE, ReAllocCharFun_t reallocfunc = 0);
ReAllocCharFun_t GetReAllocFunc() const;
void SetReAllocFunc(ReAllocCharFun_t reallocfunc = 0);
void SetBufferOffset(Int_t offset = 0) { fBufCur = fBuffer+offset; }
void SetParent(TObject *parent);
TObject *GetParent() const;
char *Buffer() const { return fBuffer; }
Int_t BufferSize() const { return fBufSize; }
void DetachBuffer() { fBuffer = 0; }
Int_t Length() const { return (Int_t)(fBufCur - fBuffer); }
void Expand(Int_t newsize, Bool_t copy = kTRUE); // expand buffer to newsize
void AutoExpand(Int_t size_needed); // expand buffer to newsize
virtual Bool_t CheckObject(const TObject *obj) = 0;
virtual Bool_t CheckObject(const void *obj, const TClass *ptrClass) = 0;
virtual Int_t ReadBuf(void *buf, Int_t max) = 0;
virtual void WriteBuf(const void *buf, Int_t max) = 0;
virtual char *ReadString(char *s, Int_t max) = 0;
virtual void WriteString(const char *s) = 0;
virtual Int_t GetVersionOwner() const = 0;
virtual Int_t GetMapCount() const = 0;
virtual void GetMappedObject(UInt_t tag, void* &ptr, TClass* &ClassPtr) const = 0;
virtual void MapObject(const TObject *obj, UInt_t offset = 1) = 0;
virtual void MapObject(const void *obj, const TClass *cl, UInt_t offset = 1) = 0;
virtual void Reset() = 0;
virtual void InitMap() = 0;
virtual void ResetMap() = 0;
virtual void SetReadParam(Int_t mapsize) = 0;
virtual void SetWriteParam(Int_t mapsize) = 0;
virtual Int_t CheckByteCount(UInt_t startpos, UInt_t bcnt, const TClass *clss) = 0;
virtual Int_t CheckByteCount(UInt_t startpos, UInt_t bcnt, const char *classname) = 0;
virtual void SetByteCount(UInt_t cntpos, Bool_t packInVersion = kFALSE)= 0;
virtual void SkipVersion(const TClass *cl = 0) = 0;
virtual Version_t ReadVersion(UInt_t *start = 0, UInt_t *bcnt = 0, const TClass *cl = 0) = 0;
virtual Version_t ReadVersionNoCheckSum(UInt_t *start = 0, UInt_t *bcnt = 0) = 0;
virtual Version_t ReadVersionForMemberWise(const TClass *cl = 0) = 0;
virtual UInt_t WriteVersion(const TClass *cl, Bool_t useBcnt = kFALSE) = 0;
virtual UInt_t WriteVersionMemberWise(const TClass *cl, Bool_t useBcnt = kFALSE) = 0;
virtual void *ReadObjectAny(const TClass* cast) = 0;
virtual void SkipObjectAny() = 0;
virtual void TagStreamerInfo(TVirtualStreamerInfo* info) = 0;
virtual void IncrementLevel(TVirtualStreamerInfo* info) = 0;
virtual void SetStreamerElementNumber(TStreamerElement *elem, Int_t comp_type) = 0;
virtual void DecrementLevel(TVirtualStreamerInfo*) = 0;
virtual void ClassBegin(const TClass*, Version_t = -1) = 0;
virtual void ClassEnd(const TClass*) = 0;
virtual void ClassMember(const char*, const char* = 0, Int_t = -1, Int_t = -1) = 0;
virtual TVirtualStreamerInfo *GetInfo() = 0;
virtual TVirtualArray *PeekDataCache() const;
virtual TVirtualArray *PopDataCache();
virtual void PushDataCache(TVirtualArray *);
virtual TClass *ReadClass(const TClass *cl = 0, UInt_t *objTag = 0) = 0;
virtual void WriteClass(const TClass *cl) = 0;
virtual TObject *ReadObject(const TClass *cl) = 0;
virtual void WriteObject(const TObject *obj) = 0;
virtual Int_t WriteObjectAny(const void *obj, const TClass *ptrClass) = 0;
virtual UShort_t GetPidOffset() const = 0;
virtual void SetPidOffset(UShort_t offset) = 0;
virtual Int_t GetBufferDisplacement() const = 0;
virtual void SetBufferDisplacement() = 0;
virtual void SetBufferDisplacement(Int_t skipped) = 0;
// basic types and arrays of basic types
virtual void ReadFloat16 (Float_t *f, TStreamerElement *ele=0) = 0;
virtual void WriteFloat16(Float_t *f, TStreamerElement *ele=0) = 0;
virtual void ReadDouble32 (Double_t *d, TStreamerElement *ele=0) = 0;
virtual void WriteDouble32(Double_t *d, TStreamerElement *ele=0) = 0;
virtual void ReadWithFactor(Float_t *ptr, Double_t factor, Double_t minvalue) = 0;
virtual void ReadWithNbits(Float_t *ptr, Int_t nbits) = 0;
virtual void ReadWithFactor(Double_t *ptr, Double_t factor, Double_t minvalue) = 0;
virtual void ReadWithNbits(Double_t *ptr, Int_t nbits) = 0;
virtual Int_t ReadArray(Bool_t *&b) = 0;
virtual Int_t ReadArray(Char_t *&c) = 0;
virtual Int_t ReadArray(UChar_t *&c) = 0;
virtual Int_t ReadArray(Short_t *&h) = 0;
virtual Int_t ReadArray(UShort_t *&h) = 0;
virtual Int_t ReadArray(Int_t *&i) = 0;
virtual Int_t ReadArray(UInt_t *&i) = 0;
virtual Int_t ReadArray(Long_t *&l) = 0;
virtual Int_t ReadArray(ULong_t *&l) = 0;
virtual Int_t ReadArray(Long64_t *&l) = 0;
virtual Int_t ReadArray(ULong64_t *&l) = 0;
virtual Int_t ReadArray(Float_t *&f) = 0;
virtual Int_t ReadArray(Double_t *&d) = 0;
virtual Int_t ReadArrayFloat16(Float_t *&f, TStreamerElement *ele=0) = 0;
virtual Int_t ReadArrayDouble32(Double_t *&d, TStreamerElement *ele=0) = 0;
virtual Int_t ReadStaticArray(Bool_t *b) = 0;
virtual Int_t ReadStaticArray(Char_t *c) = 0;
virtual Int_t ReadStaticArray(UChar_t *c) = 0;
virtual Int_t ReadStaticArray(Short_t *h) = 0;
virtual Int_t ReadStaticArray(UShort_t *h) = 0;
virtual Int_t ReadStaticArray(Int_t *i) = 0;
virtual Int_t ReadStaticArray(UInt_t *i) = 0;
virtual Int_t ReadStaticArray(Long_t *l) = 0;
virtual Int_t ReadStaticArray(ULong_t *l) = 0;
virtual Int_t ReadStaticArray(Long64_t *l) = 0;
virtual Int_t ReadStaticArray(ULong64_t *l) = 0;
virtual Int_t ReadStaticArray(Float_t *f) = 0;
virtual Int_t ReadStaticArray(Double_t *d) = 0;
virtual Int_t ReadStaticArrayFloat16(Float_t *f, TStreamerElement *ele=0) = 0;
virtual Int_t ReadStaticArrayDouble32(Double_t *d, TStreamerElement *ele=0) = 0;
virtual void ReadFastArray(Bool_t *b, Int_t n) = 0;
virtual void ReadFastArray(Char_t *c, Int_t n) = 0;
virtual void ReadFastArrayString(Char_t *c, Int_t n) = 0;
virtual void ReadFastArray(UChar_t *c, Int_t n) = 0;
virtual void ReadFastArray(Short_t *h, Int_t n) = 0;
virtual void ReadFastArray(UShort_t *h, Int_t n) = 0;
virtual void ReadFastArray(Int_t *i, Int_t n) = 0;
virtual void ReadFastArray(UInt_t *i, Int_t n) = 0;
virtual void ReadFastArray(Long_t *l, Int_t n) = 0;
virtual void ReadFastArray(ULong_t *l, Int_t n) = 0;
virtual void ReadFastArray(Long64_t *l, Int_t n) = 0;
virtual void ReadFastArray(ULong64_t *l, Int_t n) = 0;
virtual void ReadFastArray(Float_t *f, Int_t n) = 0;
virtual void ReadFastArray(Double_t *d, Int_t n) = 0;
virtual void ReadFastArrayFloat16(Float_t *f, Int_t n, TStreamerElement *ele=0) = 0;
virtual void ReadFastArrayDouble32(Double_t *d, Int_t n, TStreamerElement *ele=0) = 0;
virtual void ReadFastArrayWithFactor(Float_t *ptr, Int_t n, Double_t factor, Double_t minvalue) = 0;
virtual void ReadFastArrayWithNbits(Float_t *ptr, Int_t n, Int_t nbits) = 0;
virtual void ReadFastArrayWithFactor(Double_t *ptr, Int_t n, Double_t factor, Double_t minvalue) = 0;
virtual void ReadFastArrayWithNbits(Double_t *ptr, Int_t n, Int_t nbits) = 0;
virtual void ReadFastArray(void *start , const TClass *cl, Int_t n=1, TMemberStreamer *s=0, const TClass *onFileClass=0) = 0;
virtual void ReadFastArray(void **startp, const TClass *cl, Int_t n=1, Bool_t isPreAlloc=kFALSE, TMemberStreamer *s=0, const TClass *onFileClass=0) = 0;
virtual void WriteArray(const Bool_t *b, Int_t n) = 0;
virtual void WriteArray(const Char_t *c, Int_t n) = 0;
virtual void WriteArray(const UChar_t *c, Int_t n) = 0;
virtual void WriteArray(const Short_t *h, Int_t n) = 0;
virtual void WriteArray(const UShort_t *h, Int_t n) = 0;
virtual void WriteArray(const Int_t *i, Int_t n) = 0;
virtual void WriteArray(const UInt_t *i, Int_t n) = 0;
virtual void WriteArray(const Long_t *l, Int_t n) = 0;
virtual void WriteArray(const ULong_t *l, Int_t n) = 0;
virtual void WriteArray(const Long64_t *l, Int_t n) = 0;
virtual void WriteArray(const ULong64_t *l, Int_t n) = 0;
virtual void WriteArray(const Float_t *f, Int_t n) = 0;
virtual void WriteArray(const Double_t *d, Int_t n) = 0;
virtual void WriteArrayFloat16(const Float_t *f, Int_t n, TStreamerElement *ele=0) = 0;
virtual void WriteArrayDouble32(const Double_t *d, Int_t n, TStreamerElement *ele=0) = 0;
virtual void WriteFastArray(const Bool_t *b, Int_t n) = 0;
virtual void WriteFastArray(const Char_t *c, Int_t n) = 0;
virtual void WriteFastArrayString(const Char_t *c, Int_t n) = 0;
virtual void WriteFastArray(const UChar_t *c, Int_t n) = 0;
virtual void WriteFastArray(const Short_t *h, Int_t n) = 0;
virtual void WriteFastArray(const UShort_t *h, Int_t n) = 0;
virtual void WriteFastArray(const Int_t *i, Int_t n) = 0;
virtual void WriteFastArray(const UInt_t *i, Int_t n) = 0;
virtual void WriteFastArray(const Long_t *l, Int_t n) = 0;
virtual void WriteFastArray(const ULong_t *l, Int_t n) = 0;
virtual void WriteFastArray(const Long64_t *l, Int_t n) = 0;
virtual void WriteFastArray(const ULong64_t *l, Int_t n) = 0;
virtual void WriteFastArray(const Float_t *f, Int_t n) = 0;
virtual void WriteFastArray(const Double_t *d, Int_t n) = 0;
virtual void WriteFastArrayFloat16(const Float_t *f, Int_t n, TStreamerElement *ele=0) = 0;
virtual void WriteFastArrayDouble32(const Double_t *d, Int_t n, TStreamerElement *ele=0) = 0;
virtual void WriteFastArray(void *start, const TClass *cl, Int_t n=1, TMemberStreamer *s=0) = 0;
virtual Int_t WriteFastArray(void **startp, const TClass *cl, Int_t n=1, Bool_t isPreAlloc=kFALSE, TMemberStreamer *s=0) = 0;
virtual void StreamObject(void *obj, const type_info &typeinfo, const TClass* onFileClass = 0 ) = 0;
virtual void StreamObject(void *obj, const char *className, const TClass* onFileClass = 0 ) = 0;
virtual void StreamObject(void *obj, const TClass *cl, const TClass* onFileClass = 0 ) = 0;
virtual void StreamObject(TObject *obj) = 0;
virtual void ReadBool(Bool_t &b) = 0;
virtual void ReadChar(Char_t &c) = 0;
virtual void ReadUChar(UChar_t &c) = 0;
virtual void ReadShort(Short_t &s) = 0;
virtual void ReadUShort(UShort_t &s) = 0;
virtual void ReadInt(Int_t &i) = 0;
virtual void ReadUInt(UInt_t &i) = 0;
virtual void ReadLong(Long_t &l) = 0;
virtual void ReadULong(ULong_t &l) = 0;
virtual void ReadLong64(Long64_t &l) = 0;
virtual void ReadULong64(ULong64_t &l) = 0;
virtual void ReadFloat(Float_t &f) = 0;
virtual void ReadDouble(Double_t &d) = 0;
virtual void ReadCharP(Char_t *c) = 0;
virtual void ReadTString(TString &s) = 0;
virtual void ReadStdString(std::string &s) = 0;
virtual void WriteBool(Bool_t b) = 0;
virtual void WriteChar(Char_t c) = 0;
virtual void WriteUChar(UChar_t c) = 0;
virtual void WriteShort(Short_t s) = 0;
virtual void WriteUShort(UShort_t s) = 0;
virtual void WriteInt(Int_t i) = 0;
virtual void WriteUInt(UInt_t i) = 0;
virtual void WriteLong(Long_t l) = 0;
virtual void WriteULong(ULong_t l) = 0;
virtual void WriteLong64(Long64_t l) = 0;
virtual void WriteULong64(ULong64_t l) = 0;
virtual void WriteFloat(Float_t f) = 0;
virtual void WriteDouble(Double_t d) = 0;
virtual void WriteCharP(const Char_t *c) = 0;
virtual void WriteTString(const TString &s) = 0;
virtual void WriteStdString(const std::string &s) = 0;
// Special basic ROOT objects and collections
virtual TProcessID *GetLastProcessID(TRefTable *reftable) const = 0;
virtual UInt_t GetTRefExecId() = 0;
virtual TProcessID *ReadProcessID(UShort_t pidf) = 0;
virtual UShort_t WriteProcessID(TProcessID *pid) = 0;
// Utilities for TStreamerInfo
virtual void ForceWriteInfo(TVirtualStreamerInfo *info, Bool_t force) = 0;
virtual void ForceWriteInfoClones(TClonesArray *a) = 0;
virtual Int_t ReadClones (TClonesArray *a, Int_t nobjects, Version_t objvers) = 0;
virtual Int_t WriteClones(TClonesArray *a, Int_t nobjects) = 0;
// Utilities for TClass
virtual Int_t ReadClassEmulated(const TClass *cl, void *object, const TClass *onfile_class = 0) = 0;
virtual Int_t ReadClassBuffer(const TClass *cl, void *pointer, const TClass *onfile_class = 0) = 0;
virtual Int_t ReadClassBuffer(const TClass *cl, void *pointer, Int_t version, UInt_t start, UInt_t count, const TClass *onfile_class = 0) = 0;
virtual Int_t WriteClassBuffer(const TClass *cl, void *pointer) = 0;
// Utilites to streamer using sequences.
virtual Int_t ApplySequence(const TStreamerInfoActions::TActionSequence &sequence, void *object) = 0;
virtual Int_t ApplySequenceVecPtr(const TStreamerInfoActions::TActionSequence &sequence, void *start_collection, void *end_collection) = 0;
virtual Int_t ApplySequence(const TStreamerInfoActions::TActionSequence &sequence, void *start_collection, void *end_collection) = 0;
static TClass *GetClass(const type_info &typeinfo);
static TClass *GetClass(const char *className);