147 lines
3.3 KiB
C++
147 lines
3.3 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1994.
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//
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// File: filllkb.hxx
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//
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// Contents: CFillLockBytes class header
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//
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// Classes:
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//
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// Functions:
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//
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// History: 28-Dec-95 PhilipLa Created
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//
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//----------------------------------------------------------------------------
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#ifndef __FILLLKB_HXX__
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#define __FILLLKB_HXX__
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//+---------------------------------------------------------------------------
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//
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// Class: CFillLockBytes
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//
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// Purpose:
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//
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// Interface:
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//
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// History: 28-Dec-95 PhilipLa Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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class CFillLockBytes: public ILockBytes,
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public IFillLockBytes
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#ifdef ASYNC
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, public IFillInfo
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#endif
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{
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public:
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CFillLockBytes(ILockBytes *pilb);
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~CFillLockBytes();
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SCODE Init(void);
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// 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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// ILockBytes
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STDMETHOD(ReadAt)(ULARGE_INTEGER ulOffset,
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VOID HUGEP *pv,
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ULONG cb,
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ULONG *pcbRead);
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STDMETHOD(WriteAt)(ULARGE_INTEGER ulOffset,
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VOID const HUGEP *pv,
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ULONG cb,
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ULONG *pcbWritten);
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STDMETHOD(Flush)(void);
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STDMETHOD(SetSize)(ULARGE_INTEGER cb);
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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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//From IFillLockBytes
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STDMETHOD(FillAppend)(void const *pv,
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ULONG cb,
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ULONG *pcbWritten);
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STDMETHOD(FillAt)(ULARGE_INTEGER ulOffset,
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void const *pv,
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ULONG cb,
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ULONG *pcbWritten);
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STDMETHOD(SetFillSize)(ULARGE_INTEGER ulSize);
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STDMETHOD(Terminate)(BOOL bCanceled);
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//From IFillInfo
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STDMETHOD(GetFailureInfo)(ULONG *pulWaterMark, ULONG *pulFailurePoint);
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STDMETHOD(GetTerminationStatus)(DWORD *pdwFlags);
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#ifndef ASYNC
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HANDLE GetNotificationEvent(void);
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#endif
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#ifdef ASYNC
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inline void SetContext(CPerContext *ppc);
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#endif
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SCODE SetFailureInfo(ULONG ulWaterMark,ULONG ulFailurePoint);
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#if DBG==1
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void PulseFillEvent(void);
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#endif
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inline void TakeCriticalSection(void);
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inline void ReleaseCriticalSection(void);
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private:
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ILockBytes *_pilb;
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LONG _cRefs;
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ULONG _ulHighWater;
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DWORD _dwTerminate;
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ULONG _ulFailurePoint;
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#ifdef ASYNC
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CPerContext *_ppc;
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#else
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HANDLE _hNotifyEvent;
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#endif
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BOOL _fCSInitialized;
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CRITICAL_SECTION _csThreadProtect;
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};
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inline void CFillLockBytes::TakeCriticalSection(void)
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{
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EnterCriticalSection(&_csThreadProtect);
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}
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inline void CFillLockBytes::ReleaseCriticalSection(void)
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{
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LeaveCriticalSection(&_csThreadProtect);
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}
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#ifdef ASYNC
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inline void CFillLockBytes::SetContext(CPerContext *ppc)
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{
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_ppc = ppc;
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_ppc->AddRefSharedMem();
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if (_dwTerminate != UNTERMINATED)
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{
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if (_ppc->GetNotificationEvent() != INVALID_HANDLE_VALUE)
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SetEvent(_ppc->GetNotificationEvent());
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}
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}
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#endif
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#endif // #ifndef __FILLLKB_HXX__
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