149 lines
4 KiB
C
149 lines
4 KiB
C
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/*++
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Copyright (C) 1997-2001 Microsoft Corporation
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Module Name:
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Abstract:
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History:
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--*/
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//***************************************************************************
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//
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// REFRESHR.H
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//
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//***************************************************************************
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#ifndef _REFRESHR_H_
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#define _REFRESHR_H_
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//***************************************************************************
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//
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//***************************************************************************
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struct CachedInst
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{
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LPWSTR m_pName; // Instance name
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IWbemObjectAccess *m_pInst; // Pointer to WBEM object
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LONG m_lId; // ID for this object
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CachedInst() { m_pName = 0; m_pInst = 0; m_lId = 0; }
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~CachedInst() { delete [] m_pName; if (m_pInst) m_pInst->Release(); }
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};
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typedef CachedInst *PCachedInst;
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//***************************************************************************
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//
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// RefresherCacheEl
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//
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// Each CNt5Refresher has a cache of <RefresherCacheEl> elements. There
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// is one RefresherCacheEl struct for each class of object in the refresher.
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//
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// As each object is added to the refresher, we locate the corresponding
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// <RefresherCacheEl> for the class of the object. We then add the
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// instance into the instance cache of the <RefresherCacheEl>. If there
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// is no RefresherCacheEl, we create one.
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//
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// For singleton instances, we simply special case by having a dedicated
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// pointer.
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//
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// For multi-instance counters, we use a binary search lookup.
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//
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//***************************************************************************
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// ok
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struct RefresherCacheEl
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{
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DWORD m_dwPerfObjIx; // Perf object index for Class Def
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CClassMapInfo *m_pClassMap; // WBEM Class def stuff
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IWbemObjectAccess *m_pSingleton; // Optional Singleton instance
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LONG m_lSingletonId;
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CFlexArray m_aInstances; // Instance list for non-singleton
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// of CachedInst pointers.
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RefresherCacheEl();
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~RefresherCacheEl();
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IWbemObjectAccess *FindInst(LPWSTR pszName); // Already scoped by class
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BOOL RemoveInst(LONG lId);
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BOOL InsertInst(IWbemObjectAccess *p, LONG lNewId);
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};
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typedef RefresherCacheEl *PRefresherCacheEl;
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class CNt5Refresher : public IWbemRefresher
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{
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LONG m_lRef;
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LONG m_lProbableId;
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CFlexArray m_aCache;
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// Pointers to RefresherCacheEl objects which contain
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// all classes and their instances used in this refresher.
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public:
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CNt5Refresher();
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~CNt5Refresher();
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// Interface members.
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// ==================
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ULONG STDMETHODCALLTYPE AddRef();
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ULONG STDMETHODCALLTYPE Release();
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STDMETHODIMP QueryInterface(REFIID riid, void** ppv);
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// Primary WBEM method for updating.
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// =================================
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virtual HRESULT STDMETHODCALLTYPE Refresh(/* [in] */ long lFlags);
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// Private members used by NTPERF.CPP
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// ==================================
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BOOL AddObject(
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IN IWbemObjectAccess *pObj, // Object to add
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IN CClassMapInfo *pClsMap, // Class of object
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OUT LONG *plId // The id of the object added
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);
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BOOL RemoveObject(LONG lId);
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CClassMapInfo * FindClassMap(
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DWORD dwObjectTitleIx
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);
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BOOL FindSingletonInst(
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IN DWORD dwPerfObjIx,
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OUT IWbemObjectAccess **pInst,
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OUT CClassMapInfo **pClsMap
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);
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BOOL FindInst(
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IN DWORD dwObjectClassIx,
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IN LPWSTR pszInstName,
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OUT IWbemObjectAccess **pInst,
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OUT CClassMapInfo **pClsMap
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);
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BOOL GetObjectIds(DWORD *pdwNumIds, DWORD **pdwIdList);
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// Use operator delete on returned <pdwIdList>
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LONG FindUnusedId();
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// Returns -1 on error or an unused id.
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PRefresherCacheEl GetCacheEl(CClassMapInfo *pClsMap);
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BOOL AddNewCacheEl(
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IN CClassMapInfo *pClsMap,
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PRefresherCacheEl *pOutput
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);
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};
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#endif
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