118 lines
3 KiB
C++
118 lines
3 KiB
C++
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//******************************************************************************
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//
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// POSTPONE.CPP
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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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#include "precomp.h"
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#include <stdio.h>
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#include <ess.h>
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#include <postpone.h>
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HRESULT CPostponedList::AddRequest( CEssNamespace* pNamespace,
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ACQUIRE CPostponedRequest* pReq )
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{
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if ( pReq->DoesHoldTurn() )
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{
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m_cTurnsHeld++;
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}
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pReq->SetNamespace( pNamespace );
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if(!m_qpRequests.Enqueue(pReq))
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return WBEM_E_OUT_OF_MEMORY;
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else
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return WBEM_S_NO_ERROR;
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}
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HRESULT CPostponedList::Execute(CEssNamespace* pNamespace,
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EPostponedExecuteFlags eFlags,
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DELETE_ME CPostponedRequest** ppFailed)
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{
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if(ppFailed)
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*ppFailed = NULL;
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HRESULT hresGlobal = WBEM_S_NO_ERROR;
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while(m_qpRequests.GetQueueSize())
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{
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// Retrieve and remove the next request
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// ====================================
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CPostponedRequest* pReq = m_qpRequests.Dequeue();
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if ( pReq->DoesHoldTurn() )
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{
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_DBG_ASSERT( m_cTurnsHeld > 0 );
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m_cTurnsHeld--;
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}
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//
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// see if the namespace that postponed the request is different
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// from the one executing it. If it is, this is very bad. This
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// can happen in (faulty) cross namespace logic when one namespace is
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// executing an operation in the other, normally while holding
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// its own ns lock, and then the other fires the postponed
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// operations for itself and the original namespace which surely
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// was not intended. Some requests aren't namespace specific, so
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// it we don't do the check for these.
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//
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_DBG_ASSERT( pReq->GetNamespace() == NULL ||
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pReq->GetNamespace() == pNamespace );
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// Execute it
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// ==========
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HRESULT hres = pReq->Execute(pNamespace);
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if(FAILED(hres))
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{
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if(eFlags == e_StopOnFailure)
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{
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// Return the request and the error
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// ================================
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if(ppFailed)
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*ppFailed = pReq;
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else
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delete pReq;
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return hres;
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}
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else
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{
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// Record the request and the error
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// ================================
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if(ppFailed)
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{
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delete *ppFailed;
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*ppFailed = pReq;
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}
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else
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delete pReq;
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if(SUCCEEDED(hresGlobal))
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hresGlobal = hres;
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}
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}
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else
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{
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delete pReq;
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}
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}
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return hresGlobal;
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}
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HRESULT CPostponedList::Clear()
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{
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m_qpRequests.Clear();
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m_cTurnsHeld = 0;
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return WBEM_S_NO_ERROR;
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}
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