152 lines
3.1 KiB
C++
152 lines
3.1 KiB
C++
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/*++
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Copyright (C) 1998-2001 Microsoft Corporation
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Module Name:
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Abstract:
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History:
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--*/
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///////////////////////////////////////////////////////////////////
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//
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// StressOps.cpp
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//
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///////////////////////////////////////////////////////////////////
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#include "Refresher.h"
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#include "Agents.h"
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CBasicRefreshAgent::CBasicRefreshAgent()
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{
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m_pRef = 0;
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m_dwIterations = 0;
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m_dwPeriod = 0;
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m_hThread = 0;
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}
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CBasicRefreshAgent::~CBasicRefreshAgent()
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{
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}
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BOOL CBasicRefreshAgent::Create(CRefresher *pRef, DWORD dwIterations, DWORD dwPeriod, HANDLE hRefreshEvent)
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{
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m_hRefreshEvent = hRefreshEvent;
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m_pRef = pRef;
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m_dwPeriod = dwPeriod;
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m_dwIterations = dwIterations;
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m_bInfinite = (0 == dwIterations);
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if (m_dwIterations)
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{
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DWORD dwTID;
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m_hThread = CreateThread(NULL, 0, CBasicRefreshAgent::StressThreadEntry,
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(LPVOID)this, CREATE_SUSPENDED,
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&dwTID);
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InterlockedIncrement(&g_lRefThreadCount);
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}
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return (NULL != m_hThread);
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}
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void CBasicRefreshAgent::BeginStress()
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{
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if (m_hThread)
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ResumeThread(m_hThread);
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}
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void CBasicRefreshAgent::StressLoop()
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{
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DWORD dw = 0;
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while ((dw < m_dwIterations) || m_bInfinite)
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{
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if (!m_bInfinite)
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dw++;
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if (!m_pRef->Refresh())
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break;
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if (m_dwPeriod)
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Sleep(m_dwPeriod);
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}
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}
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DWORD WINAPI CBasicRefreshAgent::StressThreadEntry(LPVOID lpParameter)
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{
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CBasicRefreshAgent *pStress = (CBasicRefreshAgent*)lpParameter;
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pStress->StressLoop();
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if (InterlockedDecrement(&g_lRefThreadCount) == 0)
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if (pStress->m_hRefreshEvent)
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SetEvent(pStress->m_hRefreshEvent);
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return 0;
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}
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BOOL CRandomOpRefreshAgent::Create(CRefresher *pRef, DWORD dwPeriod)
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{
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CBasicRefreshAgent::Create(pRef, 0, dwPeriod, NULL);
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DWORD dwTID;
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m_hThreadAddRefs = CreateThread(NULL, 0, CRandomOpRefreshAgent::AddRefThreadEntry,
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(LPVOID)this, CREATE_SUSPENDED,
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&dwTID);
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m_hThreadRemoveRefs = CreateThread(NULL, 0, CRandomOpRefreshAgent::RemRefThreadEntry,
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(LPVOID)this, CREATE_SUSPENDED,
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&dwTID);
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return TRUE;
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}
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void CRandomOpRefreshAgent::BeginStress()
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{
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CBasicRefreshAgent::BeginStress();
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}
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void CRandomOpRefreshAgent::StressLoop()
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{
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DWORD dw = 0;
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while ((dw < m_dwIterations) || m_bInfinite)
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{
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if (!m_bInfinite)
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dw++;
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if (!m_pRef->Refresh())
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break;
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if (m_dwPeriod)
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Sleep(m_dwPeriod);
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}
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}
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DWORD WINAPI CRandomOpRefreshAgent::AddRefThreadEntry(LPVOID lpParameter)
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{
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CRandomOpRefreshAgent *pAgent = (CRandomOpRefreshAgent*)lpParameter;
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// If number of instances are lower than MAX_INST, then add instance then sleep for random period
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if (pAgent->m_pRef->GetNumObjects() < MAX_INST)
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pAgent->m_pRef->AddObject(L"root\\default", L"Win32_HiPerfCounter.Name=\"Inst_1\"");
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Sleep(0);
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return 0;
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}
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DWORD WINAPI CRandomOpRefreshAgent::RemRefThreadEntry(LPVOID lpParameter)
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{
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CRandomOpRefreshAgent *pAgent = (CRandomOpRefreshAgent*)lpParameter;
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// If number of instances are greater than MIN_INST, then remove instance then sleep for random period
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int nNumObj = pAgent->m_pRef->GetNumObjects();
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if (nNumObj > MIN_INST)
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pAgent->m_pRef->RemoveObject(GetTickCount() % nNumObj);
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Sleep(0);
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return 0;
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}
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