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648 lines
22 KiB
648 lines
22 KiB
/*++
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Copyright (C) 1996-2001 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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// RefreshCooker.cpp
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#include "precomp.h"
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#include <wbemint.h>
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#include <comdef.h>
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#include <autoptr.h>
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#include "Refresher.h"
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#include "CookerUtils.h"
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////////////////////////////////////////////////////////////////////////////
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//
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// CRefresher
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// ==========
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//
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// The refresher class implements both the IWbemRefresher and the
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// IWMIRefreshableCooker interfaces. It contains an instance cache and
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// an enumerator cache as well as maintaining an internal refresher to
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// track the raw data.
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//
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////////////////////////////////////////////////////////////////////////////
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CRefresher::CRefresher() :
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m_pRefresher( NULL ),
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m_pConfig( NULL ),
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m_lRef( 0 ),
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m_bOK( FALSE ),
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m_dwRefreshId(0)
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{
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#ifdef _VERBOSE
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DbgPrintfA(0,"------------ CRefresher %08x \n",this);
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#endif
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WMISTATUS dwStatus = WBEM_NO_ERROR;
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// Initialize the internal refresher
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// =================================
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dwStatus = CoCreateInstance( CLSID_WbemRefresher,
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NULL,
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CLSCTX_INPROC_SERVER,
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IID_IWbemRefresher,
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(void**) &m_pRefresher );
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// Get the refresher configuration interface
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// =========================================
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if ( SUCCEEDED( dwStatus ) )
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{
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dwStatus = m_pRefresher->QueryInterface( IID_IWbemConfigureRefresher, (void**)&m_pConfig );
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}
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m_bOK = SUCCEEDED( dwStatus );
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}
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CRefresher::~CRefresher()
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{
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if (m_pRefresher ) m_pRefresher->Release();
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if ( m_pConfig ) m_pConfig->Release();
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// Private methods
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//
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///////////////////////////////////////////////////////////////////////////////
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WMISTATUS CRefresher::SearchCookingClassCache(
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WCHAR* wszCookingClass,
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/*out*/ CWMISimpleObjectCooker* & pObjectCooker_out )
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///////////////////////////////////////////////////////////////////////////////
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//
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// SearchCookingClassCache enumerates the cache looking for a class name
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// that matches the wszCookingClass parameter
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//
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// Parameters:
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// wszCookingClass - The name of the WMI cooking class
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// ppObjectCooker - The instance of the object cooker
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//
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///////////////////////////////////////////////////////////////////////////////
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{
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WMISTATUS dwStatus = WBEM_E_NOT_FOUND;
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CWMISimpleObjectCooker* pObjectCooker = NULL;
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// Enumerate through the cache looking for the record
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m_CookingClassCache.BeginEnum();
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while ( S_OK == m_CookingClassCache.Next( &pObjectCooker ) )
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{
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// Compare the names
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// =================
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if ( 0 == wbem_wcsicmp( pObjectCooker->GetCookingClassName(), wszCookingClass ) )
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{
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pObjectCooker_out = pObjectCooker;
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dwStatus = WBEM_NO_ERROR;
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break;
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}
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}
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m_CookingClassCache.EndEnum();
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return dwStatus;
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}
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WMISTATUS CRefresher::CreateObjectCooker(
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WCHAR* wszCookingClassName,
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IWbemObjectAccess* pCookingAccess,
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IWbemObjectAccess* pRawAccess,
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CWMISimpleObjectCooker** ppObjectCooker,
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IWbemServices * pNamespace)
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///////////////////////////////////////////////////////////////////////////////
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//
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// CreateObjectCooker will create and initialize a new object cooker and add
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// it to the cache
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//
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// Parameters:
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// pNamespace - The namespace pointer where the objects are located
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// pCookingAccess - The WMI cooking object in need of a cooker
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// wszCookingClassName
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// - The name of the cooking class
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// ppObjectCooker - The parameter to pass back the new object cooker
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//
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///////////////////////////////////////////////////////////////////////////////
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{
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if (NULL == ppObjectCooker) return WBEM_E_INVALID_PARAMETER;
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CWMISimpleObjectCooker* pObjectCooker = NULL;
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WCHAR* wszRawClassName;
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long lID;
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pObjectCooker = new CWMISimpleObjectCooker( wszCookingClassName, pCookingAccess, pRawAccess, pNamespace );
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if ( NULL == pObjectCooker ) return WBEM_E_OUT_OF_MEMORY;
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WMISTATUS dwStatus = pObjectCooker->GetLastHR();
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// Add the object cooker to the cache
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if ( SUCCEEDED( dwStatus ) )
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{
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dwStatus = m_CookingClassCache.Add( pObjectCooker, wszCookingClassName, &lID );
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}
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if (FAILED(dwStatus))
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{
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delete pObjectCooker;
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pObjectCooker = NULL;
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}
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*ppObjectCooker = pObjectCooker;
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return dwStatus;
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}
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WMISTATUS CRefresher::AddRawInstance(
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IWbemServices* pService,
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IWbemContext * pCtx,
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IWbemObjectAccess* pCookingInst,
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IWbemObjectAccess** ppRawInst )
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///////////////////////////////////////////////////////////////////////////////
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//
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// AddRawInstance is called to add the corresponding raw instance of a
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// cooked object to the internal refresher. We first extract the key value
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// from the cooked object and create the raw instance path using the raw
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// class name
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//
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// Parameters:
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// pService - The namespace pointer where the objects are located
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// pCookingInst - The WMI cooking instance
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// ppRawInst - The WMI raw instance that was added to the internal
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// refresher
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//
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///////////////////////////////////////////////////////////////////////////////
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{
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WMISTATUS dwStatus = WBEM_NO_ERROR;
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IWbemClassObject* pObj = NULL; // The alternate representation of pCookingInst
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_variant_t varRelPath; // The RELPATH value
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WCHAR* wszRawClassName = NULL; // The name of the raw class
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// Get the fully specified instance path for the cooking object
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// ============================================================
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pCookingInst->QueryInterface( IID_IWbemClassObject, (void**)&pObj );
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CReleaseMe arObj( pObj );
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dwStatus = pObj->Get( L"__RELPATH", 0, &varRelPath, NULL, NULL );
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if ( SUCCEEDED( dwStatus ) )
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{
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// Verify the property type
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// ========================
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if ( varRelPath.vt != VT_BSTR )
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{
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dwStatus = WBEM_E_TYPE_MISMATCH;
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}
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if ( SUCCEEDED( dwStatus ) )
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{
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IWbemClassObject* pRawInst = NULL;
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WCHAR* wszKeys = NULL;
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WCHAR* wszRawInst = NULL;
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// Extract the key name
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// ====================
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wszKeys = wcsstr( varRelPath.bstrVal, L"=" ) + 1;
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// Get the raw class name
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// ======================
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dwStatus = GetRawClassName( pCookingInst, &wszRawClassName );
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if (SUCCEEDED(dwStatus))
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{
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wmilib::auto_buffer<WCHAR> adRawClassName( wszRawClassName );
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// Append the key to the raw class name
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// ====================================
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size_t length = wcslen( wszRawClassName ) + wcslen( wszKeys ) + 10;
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wszRawInst = new WCHAR[ length ];
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if (!wszRawInst)
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return WBEM_E_OUT_OF_MEMORY;
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wmilib::auto_buffer<WCHAR> adRawInst( wszRawInst );
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StringCchPrintfW( wszRawInst, length , L"%s=%s", wszRawClassName, wszKeys );
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// Add a raw instance to the internal refresher
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// ============================================
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dwStatus = m_pConfig->AddObjectByPath( pService, wszRawInst, 0, pCtx, &pRawInst, NULL );
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CReleaseMe arRawInst( pRawInst );
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if (SUCCEEDED(dwStatus)) {
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// Return the IWbemObjectAccess interface of the raw instance
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// ==========================================================
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dwStatus = pRawInst->QueryInterface( IID_IWbemObjectAccess, (void**)ppRawInst );
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}
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}
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}
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}
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return dwStatus;
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}
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WMISTATUS CRefresher::AddRawEnum(
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IWbemServices* pNamespace,
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IWbemContext * pCtx,
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WCHAR * wszRawClassName,
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IWbemHiPerfEnum** ppRawEnum,
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long* plID )
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///////////////////////////////////////////////////////////////////////////////
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//
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// AddRawEnum is called to add the corresponding raw enumerator to the
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// internal refrehser. In order to add the raw enumerator to the refresher,
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// we must determine the raw class name, therefore, we must create a
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// cooking class in order to get the AutoCook_RawClass qualifier.
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//
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// Parameters:
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// pNamespace - The namespace pointer where the objects are located
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// wszRawClassName - The name of the cooking class
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// ppRawEnum - The raw WMI enumerator that was added to the
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// internal refresher
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// plID - The refresher ID of the raw enumerator
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//
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///////////////////////////////////////////////////////////////////////////////
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{
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// Add the Raw enumerator to the internal refresher
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WMISTATUS dwStatus = m_pConfig->AddEnum( pNamespace, wszRawClassName, 0, pCtx, ppRawEnum, plID );
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#ifdef _VERBOSE
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DbgPrintfA(0,"wszRawClassName %S pEnum %08x hr %08x\n",wszRawClassName,*ppRawEnum,dwStatus);
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#endif
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return dwStatus;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// COM methods
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//
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///////////////////////////////////////////////////////////////////////////////
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STDMETHODIMP CRefresher::QueryInterface(REFIID riid, void** ppv)
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///////////////////////////////////////////////////////////////////////////////
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//
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// Standard QueryInterface
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//
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// Parameters:
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// riid - the ID of the requested interface
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// ppv - a pointer to the interface pointer
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//
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///////////////////////////////////////////////////////////////////////////////
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//ok
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{
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if (NULL == ppv) return E_POINTER;
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if(riid == IID_IUnknown)
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*ppv = (LPVOID)(IUnknown*)(IWMIRefreshableCooker*)this;
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else if(riid == IID_IWMIRefreshableCooker)
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*ppv = (LPVOID)(IWMIRefreshableCooker*)this;
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else if(riid == IID_IWbemRefresher)
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*ppv = (LPVOID)(IWbemRefresher*)this;
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else
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{
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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((IUnknown*)*ppv)->AddRef();
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return S_OK;
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}
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STDMETHODIMP_(ULONG) CRefresher::AddRef()
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{
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return InterlockedIncrement(&m_lRef);
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}
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STDMETHODIMP_(ULONG) CRefresher::Release()
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{
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long lRef = InterlockedDecrement(&m_lRef);
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if(lRef == 0) delete this;
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return lRef;
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}
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STDMETHODIMP CRefresher::AddInstance(
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/*[in] */ IWbemServices* pNamespace, // The object's namespace
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/*[in] */ IWbemContext * pCtx, // The Context
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/*[in] */ IWbemObjectAccess* pCookingInstance, // Cooking class definition
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/*[in] */ IWbemObjectAccess* pRefreshableRawInstance, // Raw instance
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/*[out] */ IWbemObjectAccess** ppRefreshableInstance, // Cooking instance
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/*[out] */ long* plId )
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///////////////////////////////////////////////////////////////////////////////
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//
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// AddInstance is called to add a WMI cooking instance to the refresher. The
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// refreshable instance is a clone of the WMI instance that is passed in
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// by pCookingInstance. Once the instance is cloned, the corresponding raw
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// instance is added to the internal refresher, and then the cloned
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// cooked instance and the refreshable raw instance are added to the object
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// cooker. If a cooker does not already exist in the cooker cache, one
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// is created.
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//
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// Parameters:
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// pNamespace - The namespace where the objects are located
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// pCtx - IWbemContext implementation
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// pCookingInstance - The instance to be cooked
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// pRefreshableRawInstance
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// - U N U S E D P A R A M
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// ppRefreshableInstance
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// - The refreshable cooking instance passed back to
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// the client
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// plId - The ID of the instance
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//
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///////////////////////////////////////////////////////////////////////////////
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{
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HRESULT hResult = S_OK;
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CWMISimpleObjectCooker* pObjectCooker = NULL;
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IWbemObjectAccess* pInternalRawInst = NULL; // The raw instance for the short term local refresher solution
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// For now, we expect that the pRefreshableRawInstance parameter will be NULL
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// since we are using an internal refresher to manage the raw instances
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// ==========================================================================
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if ( NULL == pNamespace || NULL == pCookingInstance || NULL != pRefreshableRawInstance )
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{
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return WBEM_E_INVALID_PARAMETER;
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}
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IWbemClassObject* pNewClassObj = NULL;
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IWbemClassObject* pClassObj = pCookingInstance;
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pClassObj->AddRef();
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CReleaseMe arClassObj( pClassObj );
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hResult = pClassObj->Clone( &pNewClassObj );
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if (SUCCEEDED(hResult))
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{
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CReleaseMe arNewClassObj( pNewClassObj );
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hResult = pNewClassObj->QueryInterface( IID_IWbemObjectAccess, (void**)ppRefreshableInstance );
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// Add the instance to the object cooker
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if ( SUCCEEDED( hResult ) )
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{
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// Get the raw instance (add it to the internal refresher)
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hResult = AddRawInstance( pNamespace, pCtx, *ppRefreshableInstance, &pInternalRawInst );
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CReleaseMe arInternalRawInst( pInternalRawInst );
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// Retrieve the class cooker
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if ( SUCCEEDED( hResult ) )
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{
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WCHAR* wszClassName = NULL;
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// Get the cooked class' name
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hResult = GetClassName( pCookingInstance, &wszClassName );
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wmilib::auto_buffer<WCHAR> adaClassName( wszClassName );
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if ( SUCCEEDED( hResult ) )
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{
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// Search for an existing cooking cache object
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hResult = SearchCookingClassCache( wszClassName, pObjectCooker );
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// If it does not exist, create a new one
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if ( FAILED ( hResult ) )
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{
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hResult = CreateObjectCooker( wszClassName, pCookingInstance, pInternalRawInst, &pObjectCooker, pNamespace );
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}
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}
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}
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}
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// Add the cooking instance
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if ( SUCCEEDED( hResult ) )
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{
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hResult = pObjectCooker->SetCookedInstance( *ppRefreshableInstance, plId );
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if ( SUCCEEDED( hResult ) )
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{
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// Add the raw instance to the cooker
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hResult = pObjectCooker->BeginCooking( *plId, pInternalRawInst, m_dwRefreshId );
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}
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}
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}
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return hResult;
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}
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STDMETHODIMP CRefresher::AddEnum(
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/*[in] */ IWbemServices* pNamespace,
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/*[in] */ IWbemContext * pContext,
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/*[in, string] */ LPCWSTR wszCookingClass,
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/*[in] */ IWbemHiPerfEnum* pRefreshableEnum,
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/*[out] */ long* plId )
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///////////////////////////////////////////////////////////////////////////////
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//
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// AddEnum is called whenever a new cooked enumerator is added to the
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// refresher. WMI passes an IWbemHiPerfEnum object to the provider which
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// will be used for the cooked enumerator. The corresponding raw enumerator
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// is obtained when the added to the internal refresher. Both of these
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// enumerators as well as a cooking class template is added to the
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// enumerator cache.
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//
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// Parameters:
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// pNamespace - The namespace where the objects are located
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// wszCookingClass - The name of the enumerators' cooking class
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// pRefreshableEnum
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// - The enumerator to be used for the cooked classes
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// plId - The ID of the enumerator
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//
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///////////////////////////////////////////////////////////////////////////////
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{
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HRESULT hResult = WBEM_NO_ERROR;
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IWbemHiPerfEnum* pRawEnum = NULL;
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long lRawID = 0;
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// Verify our 'in' parameters
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// ==========================
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if ( NULL == pNamespace || NULL == wszCookingClass || NULL == pRefreshableEnum )
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{
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hResult = WBEM_E_INVALID_PARAMETER;
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}
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if ( SUCCEEDED( hResult ) )
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{
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// Get the cooking object
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// ======================
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IWbemClassObject* pCookedObject = NULL;
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IWbemClassObject* pRawObject = NULL;
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BSTR strCookedClassName = SysAllocString( wszCookingClass );
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if (NULL == strCookedClassName) return WBEM_E_OUT_OF_MEMORY;
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CSysFreeMe afCookedClassName( strCookedClassName );
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hResult = pNamespace->GetObject( strCookedClassName, 0, NULL, &pCookedObject, NULL );
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CReleaseMe arCookedObject( pCookedObject );
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if ( SUCCEEDED( hResult ) )
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{
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WCHAR* wszRawClassName = NULL;
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hResult = GetRawClassName( pCookedObject, &wszRawClassName );
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wmilib::auto_buffer<WCHAR> adRawClassName( wszRawClassName );
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if ( SUCCEEDED( hResult ))
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{
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BSTR strRawClassName = SysAllocString(wszRawClassName);
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if (NULL == strRawClassName) return WBEM_E_OUT_OF_MEMORY;
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CSysFreeMe sfm(strRawClassName);
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hResult = pNamespace->GetObject( strRawClassName, 0, NULL, &pRawObject, NULL );
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if ( SUCCEEDED( hResult ) )
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{
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CReleaseMe arRawObject( pRawObject );
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// Add the raw enumerator to our internal refresher
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// ================================================
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hResult = AddRawEnum( pNamespace, pContext, wszRawClassName, &pRawEnum, &lRawID );
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CReleaseMe arRawEnum( pRawEnum );
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if ( SUCCEEDED( hResult ) )
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{
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// Add the cooked enumerator to the enumerator cache
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// =================================================
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hResult = m_EnumCache.AddEnum(
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wszCookingClass,
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pCookedObject, // this is acquired by CWMISimpleObjectCooker and CEnumeratorManager
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pRawObject,
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pRefreshableEnum,
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pRawEnum,
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lRawID,
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(DWORD*)plId );
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// set the three bits
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*plId |= WMI_COOKED_ENUM_MASK;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return hResult;
|
|
}
|
|
|
|
STDMETHODIMP CRefresher:: Remove(
|
|
/*[in] */ long lId )
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Remove is used to remove an object from the refresher. Depending on the
|
|
// object, the corresponding removal is performed.
|
|
//
|
|
// Parameters:
|
|
// lID - The ID of the object to be removed
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
{
|
|
HRESULT hResult = S_OK;
|
|
|
|
// Is it an instance ID?
|
|
// =====================
|
|
|
|
if ( lId == ( lId & ~WMI_COOKED_ENUM_MASK ) )
|
|
{
|
|
CWMISimpleObjectCooker* pCooker = NULL;
|
|
|
|
hResult = m_CookingClassCache.BeginEnum();
|
|
|
|
while ( S_OK == m_CookingClassCache.Next( &pCooker ) )
|
|
{
|
|
pCooker->Remove( lId );
|
|
}
|
|
|
|
hResult = m_CookingClassCache.EndEnum();
|
|
}
|
|
else
|
|
{
|
|
long RawId;
|
|
hResult = m_EnumCache.RemoveEnum( (lId & ~WMI_COOKED_ENUM_MASK) , &RawId );
|
|
if (SUCCEEDED(hResult)){
|
|
m_pConfig->Remove(RawId,0);
|
|
}
|
|
|
|
}
|
|
|
|
return hResult;
|
|
}
|
|
|
|
STDMETHODIMP CRefresher::Refresh()
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Refresh is called when the refreshers' objects are to be updated. The
|
|
// instances are updated by explicitly enumerating through the instance
|
|
// cache. The enumerators' refresh is performed with the enumerator
|
|
// cache.
|
|
//
|
|
// Parameters: (none)
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
{
|
|
HRESULT hResult = S_OK;
|
|
|
|
CWMISimpleObjectCooker* pCooker = NULL;
|
|
|
|
// Refresh the internal refresher
|
|
// ==============================
|
|
|
|
m_dwRefreshId++;
|
|
|
|
hResult = m_pRefresher->Refresh( 0L );
|
|
|
|
if ( SUCCEEDED( hResult ) )
|
|
{
|
|
// INSTANCES: Update the instance values for every class
|
|
// =====================================================
|
|
|
|
hResult = m_CookingClassCache.BeginEnum();
|
|
|
|
while ( S_OK == m_CookingClassCache.Next( &pCooker ) )
|
|
{
|
|
// And update all of the instances
|
|
// ===============================
|
|
|
|
pCooker->Recalc(m_dwRefreshId);
|
|
}
|
|
|
|
hResult = m_CookingClassCache.EndEnum();
|
|
|
|
// ENUMERATORS: Merge and update the values for items in the enumerator
|
|
// ====================================================================
|
|
|
|
if ( SUCCEEDED( hResult ) )
|
|
{
|
|
hResult = m_EnumCache.Refresh(m_dwRefreshId);
|
|
}
|
|
}
|
|
|
|
return hResult;
|
|
}
|
|
|
|
STDMETHODIMP CRefresher::Refresh( long lFlags )
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// This is the IWbemRefresher::Refresh implementation and is simply a call
|
|
// through.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
{
|
|
HRESULT hResult = WBEM_NO_ERROR;
|
|
|
|
hResult = Refresh();
|
|
|
|
return hResult;
|
|
}
|