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666 lines
19 KiB
666 lines
19 KiB
////////////////////////////////////////////////////////////////////////
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//
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// Provider.cpp
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//
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// Module: WMI high performance provider
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//
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//
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// History:
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// a-dcrews 12-Jan-97 Created
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//
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//
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// Copyright (c) 1997-2001 Microsoft Corporation
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//
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////////////////////////////////////////////////////////////////////////
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#include "precomp.h"
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#include <process.h>
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#include <autoptr.h>
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#include "Provider.h"
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#include "CookerUtils.h"
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#include <comdef.h>
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//////////////////////////////////////////////////////////////
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//
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//
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// Global, external and static variables
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//
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//
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//////////////////////////////////////////////////////////////
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// The COM object counter (declared in server.cpp)
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// ===============================================
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extern long g_lObjects;
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//////////////////////////////////////////////////////////////
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//
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//
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// CHiPerfProvider
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//
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//
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//////////////////////////////////////////////////////////////
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CHiPerfProvider::CHiPerfProvider() : m_lRef(0)
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//////////////////////////////////////////////////////////////
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//
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// Constructor
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//
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//////////////////////////////////////////////////////////////
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//ok
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{
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// Increment the global COM object counter
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// =======================================
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InterlockedIncrement(&g_lObjects);
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}
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CHiPerfProvider::~CHiPerfProvider()
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//////////////////////////////////////////////////////////////
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//
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// Destructor
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//
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//////////////////////////////////////////////////////////////
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//ok
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{
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long lObjCount = 0;
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// Decrement the global COM object counter
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// =======================================
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lObjCount = InterlockedDecrement(&g_lObjects);
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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 CHiPerfProvider::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(riid == IID_IUnknown)
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*ppv = (LPVOID)(IUnknown*)(IWbemProviderInit*)this;
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else if(riid == IID_IWbemProviderInit)
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*ppv = (LPVOID)(IWbemProviderInit*)this;
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else if (riid == IID_IWbemHiPerfProvider)
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*ppv = (LPVOID)(IWbemHiPerfProvider*)this;
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else return E_NOINTERFACE;
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((IUnknown*)*ppv)->AddRef();
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return WBEM_NO_ERROR;
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}
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STDMETHODIMP_(ULONG) CHiPerfProvider::AddRef()
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//////////////////////////////////////////////////////////////
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//
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// Standard COM AddRef
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//
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//////////////////////////////////////////////////////////////
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//ok
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{
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return InterlockedIncrement(&m_lRef);
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}
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STDMETHODIMP_(ULONG) CHiPerfProvider::Release()
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//////////////////////////////////////////////////////////////
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//
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// Standard COM Release
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//
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//////////////////////////////////////////////////////////////
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//ok
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{
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long lRef = InterlockedDecrement(&m_lRef);
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if(lRef == 0)
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delete this;
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return lRef;
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}
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STDMETHODIMP CHiPerfProvider::Initialize(
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/* [unique][in] */ LPWSTR wszUser,
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/* [in] */ long lFlags,
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/* [in] */ LPWSTR wszNamespace,
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/* [unique][in] */ LPWSTR wszLocale,
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/* [in] */ IWbemServices __RPC_FAR *pNamespace,
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/* [in] */ IWbemContext __RPC_FAR *pCtx,
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/* [in] */ IWbemProviderInitSink __RPC_FAR *pInitSink)
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//////////////////////////////////////////////////////////////////////
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//
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// Called once during startup for any one-time initialization. The
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// final call to Release() is for any cleanup.
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//
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// The parameters indicate to the provider which namespace it is being
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// invoked for and which User. It also supplies a back pointer to
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// WINMGMT so that class definitions can be retrieved.
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//
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// Initialize will create a single template object that can be used
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// by the provider to spawn instances for QueryInstances. It will
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// also initialize our mock data source and set the global ID access
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// handle.
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//
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// Parameters:
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// wszUser - The current user.
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// lFlags - Reserved.
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// wszNamespace - The namespace for which we are being activated.
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// wszLocale - The locale under which we are to be running.
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// pNamespace - An active pointer back into the current namespace
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// from which we can retrieve schema objects.
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// pCtx - The user's context object. We simply reuse this
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// during any reentrant operations into WINMGMT.
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// pInitSink - The sink to which we indicate our readiness.
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//
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//////////////////////////////////////////////////////////////////////
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//ok
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{
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HRESULT hResult = WBEM_NO_ERROR;
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if (wszNamespace == 0 || pNamespace == 0 || pInitSink == 0)
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hResult = WBEM_E_INVALID_PARAMETER;
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// Add further initialization code here
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// ====================================
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// We now have all the instances ready to go and the name handle
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// stored. Tell WINMGMT that we're ready to start 'providing'
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// =============================================================
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if ( SUCCEEDED( hResult ) )
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{
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pInitSink->SetStatus(WBEM_S_INITIALIZED, 0);
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}
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return hResult;
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}
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STDMETHODIMP CHiPerfProvider::CreateRefresher(
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/* [in] */ IWbemServices __RPC_FAR *pNamespace,
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/* [in] */ long lFlags,
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/* [out] */ IWbemRefresher __RPC_FAR *__RPC_FAR *ppRefresher )
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//////////////////////////////////////////////////////////////////////
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//
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// Called whenever a new refresher is needed by the client.
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//
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// Parameters:
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// pNamespace - A pointer to the relevant namespace. Not used.
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// lFlags - Reserved.
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// ppRefresher - Receives the requested refresher.
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//
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//////////////////////////////////////////////////////////////////////
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//ok
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{
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HRESULT hResult = WBEM_NO_ERROR;
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if ( pNamespace == 0 || ppRefresher == 0 )
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hResult = WBEM_E_INVALID_PARAMETER;
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if ( SUCCEEDED( hResult ) )
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{
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// Construct and initialize a new empty refresher
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// ==============================================
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CRefresher* pNewRefresher = new CRefresher;
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if ( NULL == pNewRefresher )
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{
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hResult = WBEM_E_OUT_OF_MEMORY;
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}
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else if ( !pNewRefresher->IsOK() )
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{
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hResult = WBEM_E_CRITICAL_ERROR;
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}
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if ( SUCCEEDED( hResult ) )
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{
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// Follow COM rules and AddRef() the thing before sending it back
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// ==============================================================
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pNewRefresher->AddRef();
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*ppRefresher = pNewRefresher;
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}
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else
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{
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if ( NULL != pNewRefresher )
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delete pNewRefresher;
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}
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}
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return hResult;
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}
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STDMETHODIMP CHiPerfProvider::CreateRefreshableObject(
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/* [in] */ IWbemServices __RPC_FAR *pNamespace,
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/* [in] */ IWbemObjectAccess __RPC_FAR *pTemplate,
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/* [in] */ IWbemRefresher __RPC_FAR *pRefresher,
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/* [in] */ long lFlags,
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/* [in] */ IWbemContext __RPC_FAR *pContext,
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/* [out] */ IWbemObjectAccess __RPC_FAR *__RPC_FAR *ppRefreshable,
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/* [out] */ long __RPC_FAR *plId )
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//////////////////////////////////////////////////////////////////////
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//
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// Called whenever a user wants to include an object in a refresher.
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//
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// Note that the object returned in ppRefreshable is a clone of the
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// actual instance maintained by the provider. If refreshers shared
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// a copy of the same instance, then a refresh call on one of the
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// refreshers would impact the state of both refreshers. This would
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// break the refresher rules. Instances in a refresher are only
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// allowed to be updated when 'Refresh' is called.
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//
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// Parameters:
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// pNamespace - A pointer to the relevant namespace in WINMGMT.
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// pTemplate - A pointer to a copy of the object which is to be
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// added. This object itself cannot be used, as
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// it not owned locally.
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// pRefresher - The refresher to which to add the object.
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// lFlags - Not used.
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// pContext - Not used here.
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// ppRefreshable - A pointer to the internal object which was added
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// to the refresher.
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// plId - The Object Id (for identification during removal).
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//
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//////////////////////////////////////////////////////////////////////
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//ok
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{
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HRESULT hResult = WBEM_NO_ERROR;
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if ( pNamespace == 0 || pTemplate == 0 || pRefresher == 0 )
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hResult = WBEM_E_INVALID_PARAMETER;
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// Verify hi-perf object
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// =====================
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if ( !IsHiPerfObj( pTemplate ) )
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hResult = WBEM_E_INVALID_CLASS;
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_variant_t VarClass;
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hResult = pTemplate->Get(L"__CLASS",0,&VarClass,NULL,NULL);
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if ( SUCCEEDED( hResult ) )
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{
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if (VT_BSTR == V_VT(&VarClass))
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{
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if ( !IsHiPerf( pNamespace, V_BSTR(&VarClass) ) )
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{
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hResult = WBEM_E_INVALID_CLASS;
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}
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}
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else
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{
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hResult = WBEM_E_INVALID_CLASS;
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}
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}
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if ( SUCCEEDED( hResult ) )
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{
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// The refresher being supplied by the caller is actually
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// one of our own refreshers, so a simple cast is convenient
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// so that we can access private members.
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// =========================================================
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CRefresher *pOurRefresher = ( CRefresher * ) pRefresher;
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// Add the object to the refresher. The ID is set by AddObject
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// ===========================================================
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// NB: We are passing a NULL in as the Raw object. The reason is so we
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// can maintain the interface while we are using a private refresher
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// on the inside of the cooking object refresher. This will change when
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// WMI is wired to synchronize raw instances within the client's refresher
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// =======================================================================
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hResult = pOurRefresher->AddInstance( pNamespace, pContext, pTemplate, NULL, ppRefreshable, plId );
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}
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return hResult;
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}
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STDMETHODIMP CHiPerfProvider::CreateRefreshableEnum(
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/* [in] */ IWbemServices* pNamespace,
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/* [in, string] */ LPCWSTR wszClass,
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/* [in] */ IWbemRefresher* pRefresher,
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/* [in] */ long lFlags,
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/* [in] */ IWbemContext* pContext,
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/* [in] */ IWbemHiPerfEnum* pHiPerfEnum,
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/* [out] */ long* plId )
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//////////////////////////////////////////////////////////////////////
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//
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// Called when an enumerator is being added to a refresher. The
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// enumerator will obtain a fresh set of instances of the specified
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// class every time that refresh is called.
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//
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// Parameters:
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// pNamespace - A pointer to the relevant namespace.
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// wszClass - The class name for the requested enumerator.
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// pRefresher - The refresher object for which we will add
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// the enumerator
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// lFlags - Reserved.
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// pContext - Not used here.
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// pHiPerfEnum - The enumerator to add to the refresher.
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// plId - A provider specified ID for the enumerator.
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//
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//////////////////////////////////////////////////////////////////////
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//ok
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{
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HRESULT hResult = WBEM_NO_ERROR;
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if ( pNamespace == 0 || pRefresher == 0 || pHiPerfEnum == 0 )
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hResult = WBEM_E_INVALID_PARAMETER;
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// Verify hi-perf class
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// =====================
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if ( !IsHiPerf( pNamespace, wszClass ) )
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hResult = WBEM_E_INVALID_CLASS;
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if ( SUCCEEDED( hResult ) )
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{
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// The refresher being supplied by the caller is actually
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// one of our own refreshers, so a simple cast is convenient
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// so that we can access private members.
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CRefresher *pOurRefresher = (CRefresher *) pRefresher;
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// Add the enumerator to the refresher. The ID is generated by AddEnum
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// ====================================================================
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hResult = pOurRefresher->AddEnum( pNamespace, pContext, wszClass, pHiPerfEnum, plId );
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}
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return hResult;
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}
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STDMETHODIMP CHiPerfProvider::StopRefreshing(
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/* [in] */ IWbemRefresher __RPC_FAR *pRefresher,
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/* [in] */ long lId,
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/* [in] */ long lFlags )
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//////////////////////////////////////////////////////////////////////
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//
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// Called whenever a user wants to remove an object from a refresher.
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//
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// Parameters:
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// pRefresher - The refresher object from which we are to
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// remove the perf object.
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// lId - The ID of the object.
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// lFlags - Not used.
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//
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//////////////////////////////////////////////////////////////////////
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//ok
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{
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HRESULT hResult = WBEM_NO_ERROR;
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if ( pRefresher == 0 )
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hResult = WBEM_E_INVALID_PARAMETER;
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if ( SUCCEEDED( hResult ) )
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{
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// The refresher being supplied by the caller is actually
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// one of our own refreshers, so a simple cast is convenient
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// so that we can access private members.
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// =========================================================
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CRefresher *pOurRefresher = (CRefresher *) pRefresher;
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hResult = pOurRefresher->Remove( lId );
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}
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return hResult;
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}
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STDMETHODIMP CHiPerfProvider::QueryInstances(
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/* [in] */ IWbemServices __RPC_FAR *pNamespace,
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/* [string][in] */ WCHAR __RPC_FAR *wszClass,
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/* [in] */ long lFlags,
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/* [in] */ IWbemContext __RPC_FAR *pCtx,
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/* [in] */ IWbemObjectSink __RPC_FAR *pSink )
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//////////////////////////////////////////////////////////////////////
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//
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// Called whenever a complete, fresh list of instances for a given
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// class is required. The objects are constructed and sent back to the
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// caller through the sink. The sink can be used in-line as here, or
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// the call can return and a separate thread could be used to deliver
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// the instances to the sink.
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//
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// Parameters:
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// pNamespace - A pointer to the relevant namespace. This
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// should not be AddRef'ed.
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// wszClass - The class name for which instances are required.
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// lFlags - Reserved.
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// pCtx - The user-supplied context (not used here).
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// pSink - The sink to which to deliver the objects. The objects
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// can be delivered synchronously through the duration
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// of this call or asynchronously (assuming we
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// had a separate thread). A IWbemObjectSink::SetStatus
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// call is required at the end of the sequence.
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//
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//////////////////////////////////////////////////////////////////////
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//ok
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{
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HRESULT hResult = WBEM_NO_ERROR;
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if (pNamespace == 0 || wszClass == 0 || pSink == 0)
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hResult = WBEM_E_INVALID_PARAMETER;
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// Verify hi-perf object
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// =====================
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if ( !IsHiPerf( pNamespace, wszClass ) )
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hResult = WBEM_E_INVALID_CLASS;
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if ( SUCCEEDED( hResult ) )
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{
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IWbemRefresher* pRefresher = NULL;
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IWbemConfigureRefresher* pConfig = NULL;
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IWbemHiPerfEnum* pHiPerfEnum = NULL;
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IWbemObjectAccess** apAccess = NULL;
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IWbemClassObject** apObject = NULL;
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hResult = 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**) &pRefresher );
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CAutoRelease rm1(pRefresher);
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// Get the refresher configuration interface
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// =========================================
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if ( SUCCEEDED( hResult ) )
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{
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hResult = pRefresher->QueryInterface( IID_IWbemConfigureRefresher, (void**)&pConfig );
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}
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CAutoRelease rm2(pConfig);
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if ( SUCCEEDED( hResult ) )
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{
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ULONG uArraySize = 0,
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uObjRet = 0;
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long lID = 0;
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hResult = pConfig->AddEnum( pNamespace, wszClass, 0, pCtx, &pHiPerfEnum, &lID );
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CAutoRelease arHiPerfEnum( pHiPerfEnum );
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if ( SUCCEEDED( hResult ) )
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{
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hResult = pRefresher->Refresh( 0L );
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hResult = pRefresher->Refresh( 0L );
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}
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if ( SUCCEEDED( hResult ) )
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{
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hResult = pHiPerfEnum->GetObjects( 0L, 0, NULL, &uObjRet );
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if ( WBEM_E_BUFFER_TOO_SMALL == hResult )
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{
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uArraySize = uObjRet;
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wmilib::auto_buffer<IWbemObjectAccess*> apAccess( new IWbemObjectAccess*[ uObjRet ]);
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wmilib::auto_buffer<IWbemClassObject*> apObject(new IWbemClassObject*[ uObjRet ]);
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if ( (NULL != apObject.get()) && (NULL != apAccess.get()))
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{
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hResult = pHiPerfEnum->GetObjects( 0L, uArraySize, apAccess.get(), &uObjRet );
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for ( ULONG uIndex = 0; uIndex < uArraySize; uIndex++ )
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{
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apAccess[ uIndex ]->QueryInterface( IID_IWbemClassObject, (void**)&( apObject[uIndex] ) );
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apAccess[ uIndex ]->Release();
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}
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}
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else
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{
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hResult = WBEM_E_OUT_OF_MEMORY;
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}
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if ( SUCCEEDED( hResult ) )
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{
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hResult = pSink->Indicate( uArraySize, apObject.get() );
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for ( ULONG uIndex = 0; uIndex < uArraySize; uIndex++ )
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{
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apObject[ uIndex ]->Release();
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}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( SUCCEEDED( hResult ) )
|
|
{
|
|
pConfig->Remove( lID , 0 );
|
|
}
|
|
}
|
|
}
|
|
|
|
pSink->SetStatus(0, hResult, 0, 0);
|
|
|
|
return hResult;
|
|
}
|
|
|
|
STDMETHODIMP CHiPerfProvider::GetObjects(
|
|
/* [in] */ IWbemServices* pNamespace,
|
|
/* [in] */ long lNumObjects,
|
|
/* [in,size_is(lNumObjects)] */ IWbemObjectAccess** apObj,
|
|
/* [in] */ long lFlags,
|
|
/* [in] */ IWbemContext* pContext)
|
|
//////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Called when a request is made to provide all instances currently
|
|
// being managed by the provider in the specified namespace.
|
|
//
|
|
// Parameters:
|
|
// pNamespace - A pointer to the relevant namespace.
|
|
// lNumObjects - The number of instances being returned.
|
|
// apObj - The array of instances being returned.
|
|
// lFlags - Reserved.
|
|
// pContext - Not used here.
|
|
//
|
|
//////////////////////////////////////////////////////////////////////
|
|
//ok
|
|
{
|
|
// Update objects
|
|
// ==============
|
|
|
|
IWbemRefresher* pRefresher = NULL;
|
|
IWbemConfigureRefresher* pConfig = NULL;
|
|
wmilib::auto_buffer<IWbemClassObject*> apRefObj(new IWbemClassObject*[lNumObjects]);
|
|
|
|
if (0 == apRefObj.get())
|
|
{
|
|
return WBEM_E_OUT_OF_MEMORY;
|
|
}
|
|
|
|
// CoCreate the refresher interface
|
|
// ================================
|
|
|
|
HRESULT hResult = CoCreateInstance( CLSID_WbemRefresher,
|
|
NULL,
|
|
CLSCTX_INPROC_SERVER,
|
|
IID_IWbemRefresher,
|
|
(void**) &pRefresher );
|
|
|
|
CAutoRelease arRefresher( pRefresher );
|
|
|
|
// Get the refresher configuration interface
|
|
// =========================================
|
|
|
|
if ( SUCCEEDED( hResult ) )
|
|
{
|
|
hResult = pRefresher->QueryInterface( IID_IWbemConfigureRefresher, (void**)&pConfig );
|
|
}
|
|
|
|
CAutoRelease arConfig( pConfig );
|
|
|
|
// Get the object data
|
|
// ===================
|
|
|
|
if ( SUCCEEDED( hResult ) )
|
|
{
|
|
long lIndex = 0,
|
|
lID = 0;
|
|
|
|
// Add all of the requested objects to the refresher
|
|
// =================================================
|
|
|
|
for ( lIndex = 0; SUCCEEDED( hResult ) && lIndex < lNumObjects; lIndex++ )
|
|
{
|
|
// Verify hi-perf object
|
|
if ( !IsHiPerfObj( apObj[ lIndex ] ) )
|
|
hResult = WBEM_E_INVALID_CLASS;
|
|
|
|
#ifdef _VERBOSE
|
|
{
|
|
_variant_t VarPath;
|
|
apObj[lIndex]->Get(L"__RELPATH",0,&VarPath,NULL,NULL);
|
|
_variant_t VarName;
|
|
apObj[lIndex]->Get(L"Name",0,&VarName,NULL,NULL);
|
|
WCHAR pBuff[256];
|
|
wsprintfW(pBuff,L"%s %s\n",V_BSTR(&VarPath),V_BSTR(&VarName));
|
|
OutputDebugStringW(pBuff);
|
|
}
|
|
#endif
|
|
|
|
if ( SUCCEEDED( hResult ) )
|
|
{
|
|
hResult = pConfig->AddObjectByTemplate( pNamespace,
|
|
apObj[ lIndex ],
|
|
0,
|
|
NULL,
|
|
&(apRefObj[ lIndex ]),
|
|
&lID );
|
|
lID = 0;
|
|
}
|
|
}
|
|
|
|
if ( SUCCEEDED( hResult ) )
|
|
{
|
|
hResult = pRefresher->Refresh( 0L );
|
|
hResult = pRefresher->Refresh( 0L );
|
|
}
|
|
|
|
for ( lIndex = 0; SUCCEEDED( hResult ) && lIndex < lNumObjects; lIndex++ )
|
|
{
|
|
hResult = CopyBlob( apRefObj[lIndex], apObj[lIndex] );
|
|
apRefObj[lIndex]->Release();
|
|
}
|
|
}
|
|
|
|
return hResult;
|
|
}
|
|
|
|
|