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63 lines
1.8 KiB
63 lines
1.8 KiB
//******************************************************************************
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//
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// POSTPONE.H
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//
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// Copyright (C) 1996-1999 Microsoft Corporation
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//
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//******************************************************************************
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#ifndef __WBEM_ESS_POSTPONE__H_
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#define __WBEM_ESS_POSTPONE__H_
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#include <arrtempl.h>
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#include <wbemcomn.h>
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class CEssNamespace;
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class CPostponedRequest
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{
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CEssNamespace* m_pNamespace; // stored for an assertion at execute()
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public:
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CPostponedRequest() : m_pNamespace(NULL) {}
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virtual ~CPostponedRequest(){}
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void SetNamespace( CEssNamespace* pNamespace ) { m_pNamespace=pNamespace; }
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CEssNamespace* GetNamespace() { return m_pNamespace; }
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virtual HRESULT Execute(CEssNamespace* pNamespace) = 0;
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//
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// if a postponed request holds a CExecLine::Turn, then override this
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// method to return TRUE. ( used for debugging purposes - we want to know
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// if a postponed list is holding any turns )
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//
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virtual BOOL DoesHoldTurn() { return FALSE; }
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};
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class CPostponedList
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{
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protected:
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ULONG m_cTurnsHeld;
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CUniquePointerQueue<CPostponedRequest> m_qpRequests;
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public:
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typedef enum
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{
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e_StopOnFailure, e_ReturnOneError
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} EPostponedExecuteFlags;
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CPostponedList() : m_qpRequests(0), m_cTurnsHeld(0) {}
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virtual ~CPostponedList(){}
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BOOL IsEmpty() { return m_qpRequests.GetQueueSize() == 0; }
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BOOL IsHoldingTurns() { return m_cTurnsHeld > 0; }
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HRESULT AddRequest( CEssNamespace* pNamespace,
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ACQUIRE CPostponedRequest* pReq );
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HRESULT Execute( CEssNamespace* pNamespace,
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EPostponedExecuteFlags eFlags,
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DELETE_ME CPostponedRequest** ppFailed = NULL);
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HRESULT Clear();
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};
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#endif
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