TnbTickCount.h

[詳解]

#pragma once
#include "TnbDef.h"
 
 
 
#ifdef _WIN32_WCE
 #define _TnbTIME_Winmm_DISABLE
#endif
 
#ifndef _TnbTIME_Winmm_DISABLE
 #include <mmsystem.h>
 #pragma comment(lib, "winmm.lib")
#endif
 
 
 
//TNB Library
namespace TNB
{
 
 
 
class CTickCount
{
public:
 
    CTickCount(void) : m_dwTick(m_Get())
    {
    }
 
    explicit CTickCount(bool b) : m_dwTick(m_Get())
    {
        m_dwTick -= 0x80000000;
    }
 
    void Reset(void)
    {
        m_dwTick = m_Get();
    }
 
    DWORD GetResetedCount(void) const
    {
        return m_dwTick;
    }
 
    DWORD GetPassedCount(void) const
    {
        return m_Get() - m_dwTick;
    }
 
    bool IsPassed(DWORD dwTime) const
    {
        return GetPassedCount() >= dwTime;
    }
 
    bool IsPassedAndReset(DWORD dwTime, bool isNow = true)
    {
        bool r = IsPassed(dwTime);
        if ( r )
        {
            if ( isNow )
            {
                Reset();
            }
            else
            {
                m_dwTick += dwTime;
                if ( IsPassed(dwTime) )
                {
                    Reset();
                }
            }
        }
        return r;
    }
 
    void OutputDebugPassedCount(void) const
    {
        TRACE1( " passed count = %d(ms)\n", GetPassedCount() );
    }
 
private:
    DWORD m_dwTick;     
 
    #ifndef _TnbDOXYGEN //Document作成用シンボル
      #ifndef _TnbTIME_Winmm_DISABLE
        class CAutoPeriod
        {
        public:
            CAutoPeriod(void)
            {
                VERIFY(timeBeginPeriod(1) == TIMERR_NOERROR);
            }
            ~CAutoPeriod(void)
            {
                VERIFY(timeEndPeriod(1) == TIMERR_NOERROR);     
            }
        };
        DWORD m_Get(void) const
        {
            static CAutoPeriod s_autoPeriod;
            return ::timeGetTime();
        }
      #else
        DWORD m_Get(void) const
        {
            return ::GetTickCount();
        }
      #endif
    #endif // _TnbDOXYGEN
};
 
 
 
};//TNB