69 lines
1.2 KiB
C
69 lines
1.2 KiB
C
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#pragma once
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#define ADMT_MUTEX _T("{9DC80865-6CC7-4988-8CC0-2AC5CA01879C}")
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#define AGENT_MUTEX _T("{E2624042-8C80-4A83-B3DF-2B840DE366E5}")
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#define DISPATCHER_MUTEX _T("{7C84F7DB-CF48-4B59-99D8-6B5A95276DBD}")
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//---------------------------------------------------------------------------
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// MigrationMutex Class
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//
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// This class may be used to prevent more than one instance of a migration
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// task to run at the same time.
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//
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//
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// Revision
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// Initial 01/26/01 Mark Oluper
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//---------------------------------------------------------------------------
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class CMigrationMutex
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{
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public:
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CMigrationMutex(LPCTSTR pszMutexName, bool bObtainOwnership = false) :
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m_hMutex(CreateMutex(NULL, FALSE, pszMutexName))
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{
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if (bObtainOwnership)
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{
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ObtainOwnership();
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}
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}
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~CMigrationMutex()
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{
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if (m_hMutex)
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{
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ReleaseOwnership();
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CloseHandle(m_hMutex);
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}
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}
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bool ObtainOwnership(DWORD dwTimeOut = INFINITE)
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{
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bool bObtain = false;
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if (m_hMutex)
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{
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if (WaitForSingleObject(m_hMutex, dwTimeOut) == WAIT_OBJECT_0)
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{
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bObtain = true;
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}
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}
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return bObtain;
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}
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void ReleaseOwnership()
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{
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if (m_hMutex)
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{
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ReleaseMutex(m_hMutex);
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}
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}
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protected:
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HANDLE m_hMutex;
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};
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