123 lines
2.2 KiB
C++
123 lines
2.2 KiB
C++
//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1999 - 1999
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//
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// File: mmcmt.h
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//
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//--------------------------------------------------------------------------
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#ifndef __MMCMT_H_
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#define __MMCMT_H_
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/*
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mmcmt.h
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Simple thread synchronization classes
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*/
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/////////////////////////////////////////////////////////////////////////////
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// CSyncObject
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class CSyncObject
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{
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friend class CMutex;
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public:
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CSyncObject();
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virtual ~CSyncObject();
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operator HANDLE() const { return m_hObject; }
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virtual BOOL Lock(DWORD dwTimeout = INFINITE);
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virtual BOOL Unlock() = 0;
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virtual BOOL Unlock(LONG /* lCount */, LPLONG /* lpPrevCount=NULL */) { return TRUE; }
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protected:
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HANDLE m_hObject;
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};
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/////////////////////////////////////////////////////////////////////////////
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// CMutex
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class CMutex : public CSyncObject
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{
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public:
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CMutex(BOOL bInitiallyOwn = FALSE);
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BOOL Unlock();
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};
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/////////////////////////////////////////////////////////////////////////////
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// CCriticalSection
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class CCriticalSection : public CSyncObject
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{
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public:
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CCriticalSection();
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virtual ~CCriticalSection();
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operator CRITICAL_SECTION*() { return &m_sect; }
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BOOL Lock();
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BOOL Unlock();
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protected:
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CRITICAL_SECTION m_sect;
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};
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inline CCriticalSection::CCriticalSection() :
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CSyncObject()
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{
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::InitializeCriticalSection( &m_sect );
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}
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inline CCriticalSection::~CCriticalSection()
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{
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::DeleteCriticalSection( &m_sect );
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}
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inline BOOL CCriticalSection::Lock()
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{
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::EnterCriticalSection( &m_sect );
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return TRUE;
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}
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inline BOOL CCriticalSection::Unlock()
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{
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::LeaveCriticalSection( &m_sect );
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return TRUE;
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}
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/////////////////////////////////////////////////////////////////////////////
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// CSingleLock
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class CSingleLock
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{
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public:
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CSingleLock(CSyncObject* pObject, BOOL bInitialLock = FALSE);
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~CSingleLock() { Unlock(); }
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BOOL Lock(DWORD dwTimeOut = INFINITE);
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BOOL Unlock();
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BOOL IsLocked() { return m_bAcquired; }
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protected:
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CSyncObject* m_pObject;
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HANDLE m_hObject;
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BOOL m_bAcquired;
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};
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#endif // __MMCMT_H__
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