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247 lines
7.6 KiB
247 lines
7.6 KiB
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1992.
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//
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// File: expst.hxx
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//
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// Contents: CExposedStream definition
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//
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// Classes: CExposedStream
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//
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// Functions:
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//
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// History: 28-Feb-92 PhilipLa Created.
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//
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//--------------------------------------------------------------------------
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#ifndef __EXPST_HXX__
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#define __EXPST_HXX__
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#include <dfmsp.hxx>
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#include <debug.hxx>
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#include "lock.hxx"
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#include <dfmem.hxx>
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#include <pbstream.hxx>
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#include <mrshlist.hxx>
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#include <astgconn.hxx>
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class CPubStream;
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class CPubMappedStream;
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class CDFBasis;
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interface ILockBytes;
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class CSeekPointer;
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SAFE_DFBASED_PTR(CBasedSeekPointerPtr, CSeekPointer);
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//+--------------------------------------------------------------
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//
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// Class: CExposedStream (est)
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//
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// Purpose: Public stream interface
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//
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// Interface: See below
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//
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// History: 28-Feb-92 PhilipLa Created.
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//
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//---------------------------------------------------------------
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interface CExposedStream: public IStream, public IMarshal, public CMallocBased
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#ifdef NEWPROPS
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, public IMappedStream
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#endif
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#ifdef POINTER_IDENTITY
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, public CMarshalList
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#endif
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#ifdef ASYNC
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, public CAsyncConnectionContainer
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#endif
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{
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public:
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CExposedStream(void);
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SCODE Init(CPubStream *pst,
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CDFBasis *pdfb,
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CPerContext *ppc,
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CSeekPointer *psp);
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#ifdef ASYNC
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SCODE InitMarshal(CPubStream *pst,
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CDFBasis *pdfb,
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CPerContext *ppc,
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DWORD dwAsyncFlags,
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IDocfileAsyncConnectionPoint *pdacp,
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CSeekPointer *psp);
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#endif
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~CExposedStream(void);
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// From IUnknown
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STDMETHOD(QueryInterface)(REFIID iid, void **ppvObj);
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STDMETHOD_(ULONG,AddRef)(void);
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STDMETHOD_(ULONG,Release)(void);
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// IMarshal
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STDMETHOD(GetUnmarshalClass)(REFIID riid,
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LPVOID pv,
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DWORD dwDestContext,
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LPVOID pvDestContext,
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DWORD mshlflags,
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LPCLSID pCid);
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STDMETHOD(GetMarshalSizeMax)(REFIID riid,
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LPVOID pv,
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DWORD dwDestContext,
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LPVOID pvDestContext,
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DWORD mshlflags,
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LPDWORD pSize);
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STDMETHOD(MarshalInterface)(IStream *pStm,
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REFIID riid,
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LPVOID pv,
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DWORD dwDestContext,
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LPVOID pvDestContext,
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DWORD mshlflags);
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STDMETHOD(UnmarshalInterface)(IStream *pStm,
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REFIID riid,
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LPVOID *ppv);
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static SCODE StaticReleaseMarshalData(IStream *pstStm,
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DWORD mshlflags);
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STDMETHOD(ReleaseMarshalData)(IStream *pStm);
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STDMETHOD(DisconnectObject)(DWORD dwReserved);
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// New methods
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STDMETHOD(Read)(VOID HUGEP *pv,
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ULONG cb,
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ULONG *pcbRead);
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STDMETHOD(Write)(VOID const HUGEP *pv,
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ULONG cb,
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ULONG *pcbWritten);
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STDMETHOD(Seek)(LARGE_INTEGER dlibMove,
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DWORD dwOrigin,
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ULARGE_INTEGER *plibNewPosition);
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STDMETHOD(SetSize)(ULARGE_INTEGER cb);
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STDMETHOD(CopyTo)(IStream *pstm,
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ULARGE_INTEGER cb,
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ULARGE_INTEGER *pcbRead,
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ULARGE_INTEGER *pcbWritten);
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STDMETHOD(Commit)(DWORD grfCommitFlags);
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STDMETHOD(Revert)(void);
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STDMETHOD(LockRegion)(ULARGE_INTEGER libOffset,
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ULARGE_INTEGER cb,
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DWORD dwLockType);
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STDMETHOD(UnlockRegion)(ULARGE_INTEGER libOffset,
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ULARGE_INTEGER cb,
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DWORD dwLockType);
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STDMETHOD(Stat)(STATSTG *pstatstg, DWORD grfStatFlag);
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STDMETHOD(Clone)(IStream **ppstm);
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// IMappedStream methods
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STDMETHODIMP_(VOID) Open(IN NTPROP np, OUT LONG *phr);
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STDMETHODIMP_(VOID) Close(OUT LONG *phr);
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STDMETHODIMP_(VOID) ReOpen(IN OUT VOID **ppv, OUT LONG *phr);
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STDMETHODIMP_(VOID) Quiesce(VOID);
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STDMETHODIMP_(VOID) Map(IN BOOLEAN fCreate, OUT VOID **ppv);
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STDMETHODIMP_(VOID) Unmap(IN BOOLEAN fFlush, IN OUT VOID **ppv);
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STDMETHODIMP_(VOID) Flush(OUT LONG *phr);
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STDMETHODIMP_(ULONG) GetSize(OUT LONG *phr);
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STDMETHODIMP_(VOID) SetSize(IN ULONG cb, IN BOOLEAN fPersistent, IN OUT VOID **ppv, OUT LONG *phr);
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STDMETHODIMP_(NTSTATUS) Lock(IN BOOLEAN fExclusive);
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STDMETHODIMP_(NTSTATUS) Unlock(VOID);
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STDMETHODIMP_(VOID) QueryTimeStamps(OUT STATPROPSETSTG *pspss, BOOLEAN fNonSimple) const;
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STDMETHODIMP_(BOOLEAN) QueryModifyTime(OUT LONGLONG *pll) const;
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STDMETHODIMP_(BOOLEAN) QuerySecurity(OUT ULONG *pul) const;
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STDMETHODIMP_(BOOLEAN) IsWriteable(VOID) const;
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STDMETHODIMP_(BOOLEAN) IsModified(VOID) const;
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STDMETHODIMP_(VOID) SetModified(OUT LONG *phr);
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STDMETHODIMP_(HANDLE) GetHandle(VOID) const;
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#if DBG
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STDMETHODIMP_(BOOLEAN) SetChangePending(BOOLEAN fChangePending);
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STDMETHODIMP_(BOOLEAN) IsNtMappedStream(VOID) const;
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#endif
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inline CPubMappedStream & GetMappedStream(void) const;
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inline const CPubMappedStream & GetConstMappedStream(void) const;
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inline SCODE Validate(void) const;
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inline CPubStream *GetPub(void) const;
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static SCODE Unmarshal(IStream *pstm,
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void **ppv,
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DWORD mshlflags);
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private:
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SCODE CopyToWorker(IStream *pstm,
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ULARGE_INTEGER cb,
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ULARGE_INTEGER *pcbRead,
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ULARGE_INTEGER *pcbWritten,
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CSafeSem *pss);
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CBasedPubStreamPtr _pst;
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CBasedDFBasisPtr _pdfb;
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CPerContext *_ppc;
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ULONG _sig;
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LONG _cReferences;
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CBasedSeekPointerPtr _psp;
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#ifdef DIRECTWRITERLOCK
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HRESULT ValidateWriteAccess();
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#endif
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};
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SAFE_INTERFACE_PTR(SafeCExposedStream, CExposedStream);
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#define CEXPOSEDSTREAM_SIG LONGSIG('E', 'X', 'S', 'T')
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#define CEXPOSEDSTREAM_SIGDEL LONGSIG('E', 'x', 'S', 't')
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//+--------------------------------------------------------------
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//
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// Member: CExposedStream::Validate, public
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//
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// Synopsis: Validates the object signature
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//
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// Returns: Returns STG_E_INVALIDHANDLE for bad signatures
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//
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// History: 17-Mar-92 DrewB Created
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//
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//---------------------------------------------------------------
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inline SCODE CExposedStream::Validate(void) const
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{
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olChkBlocks((DBG_FAST));
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return (this == NULL || _sig != CEXPOSEDSTREAM_SIG) ?
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STG_E_INVALIDHANDLE : S_OK;
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}
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//+--------------------------------------------------------------
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//
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// Member: CExposedStream::GetPub, public
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//
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// Synopsis: Returns the public
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//
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// History: 28-Feb-92 DrewB Created
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//
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//---------------------------------------------------------------
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inline CPubStream *CExposedStream::GetPub(void) const
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{
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#ifdef MULTIHEAP
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// The tree mutex must be taken before calling this routine
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// CSafeMultiHeap smh(_ppc); // optimization
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#endif
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return BP_TO_P(CPubStream *, _pst);
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}
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#ifdef NEWPROPS
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inline CPubMappedStream & CExposedStream::GetMappedStream(void) const
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{
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return _pst->GetMappedStream();
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}
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inline const CPubMappedStream & CExposedStream::GetConstMappedStream(void) const
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{
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return _pst->GetConstMappedStream();
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}
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#endif
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#endif // #ifndef __EXPST_HXX__
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