使用GetSystemTimes获得cpu使用率

#include "StdAfx.h" #include "CpuUseage.h" const TKLong TKTimeDay = 864000000000 ; const TKLong TKTimeHour = 36000000000; const TKLong TKTimeMinute = 600000000; const TKLong TKTimeSecond = 10000000; const TKLong TKTimeDecisecond = 1000000; const TKLong TKTimeCentisecond = 100000; const TKLong TKTimeMillisecond = 10000; const TKLong TKTimeMicrosecond = 10; const TKLong TKTimeFrame = 10000000 / 25; const TKLong TKTimeInfinite = 0xFFFFFFFFFFFFFFFF; const TKLong TKTimeNULL = 0; const TKLong TKTimeMax = 0x7FFFFFFFFFFFFFFF; const TKLong TKTimeMin = (-TKTimeMax); const TKLong TKTimeUNDEF = 0x8000000000000000; // WARNING // alignement PB // http://blogs.msdn.com/oldnewthing/archive/2004/08/25/220195.aspx inline TKTime::TKTime( void ) { m_time = 0; } // GetSystemTime is not used it's just to Get the sysytem time in the constructor inline TKTime::TKTime( LPCTSTR /*GetSystemTime*/ ) { FILETIME ft; ::GetSystemTimeAsFileTime( &ft ); (*(LARGE_INTEGER*)&m_time).HighPart = ft.dwHighDateTime; (*(LARGE_INTEGER*)&m_time).LowPart = ft.dwLowDateTime; } inline TKTime::TKTime( const TKTime &time ) { m_time = time.m_time; } inline TKTime::TKTime( const FILETIME &ft ) { (*(LARGE_INTEGER*)&m_time).HighPart = ft.dwHighDateTime; (*(LARGE_INTEGER*)&m_time).LowPart = ft.dwLowDateTime; } inline TKTime::TKTime( const SYSTEMTIME &sysTime ) { FILETIME ft; if ( ! SystemTimeToFileTime( &sysTime, &ft ) ) { m_time = 0; } else { (*(LARGE_INTEGER*)&m_time).HighPart = ft.dwHighDateTime; (*(LARGE_INTEGER*)&m_time).LowPart = ft.dwLowDateTime; } } inline TKTime::TKTime( DWORD days, DWORD hours, DWORD minutes, DWORD seconds, DWORD milliseconds ) { Set( days, hours, minutes, seconds, milliseconds ); } inline TKTime::TKTime( WORD year, WORD month, WORD day, WORD hour, WORD minute, WORD second ) { Set( year, month, day, hour, minute, second ); } inline TKTime::TKTime( TKLong time ) { m_time = time; } inline TKTime& TKTime::operator =( TKLong time ) { m_time = time; return *this; } inline TKTime& TKTime::operator +=( TKLong time ) { m_time = m_time + time; return *this; } inline TKTime& TKTime::operator -=( TKLong time ) { m_time = m_time - time; return *this; } inline TKTime& TKTime::operator /=( TKLong time ) { m_time = m_time / time; return *this; } inline TKTime& TKTime::operator *=( TKLong time ) { m_time = m_time * time; return *this; } inline TKTime::operator FILETIME( void ) { TKLong time = (m_time < 0) ? -m_time : m_time; FILETIME ft; ft.dwHighDateTime = (*(LARGE_INTEGER*)&time).HighPart; ft.dwLowDateTime = (*(LARGE_INTEGER*)&time).LowPart; return ft; } inline TKTime::operator TKLong( void ) { return m_time; } inline TKTime::operator SYSTEMTIME( void ) { TKLong time = (m_time < 0) ? -m_time : m_time; SYSTEMTIME sysTime; FILETIME ft; ft.dwHighDateTime = (*(LARGE_INTEGER*)&time).HighPart; ft.dwLowDateTime = (*(LARGE_INTEGER*)&time).LowPart; if ( ! FileTimeToSystemTime( &ft, &sysTime)) ZeroMemory (&sysTime, sizeof(sysTime)); return sysTime; } inline TKTime::operator TKTIME( void ) { TKLong time = (m_time < 0) ? -m_time : m_time; time /= TKTimeMillisecond; // Forget everything after millisecond TKTIME tkTime; tkTime.m_hour = int(time / 3600000); tkTime.m_minute = int((time - (TKLong(tkTime.m_hour)*3600000)) / 60000); tkTime.m_second = int((time - (TKLong(tkTime.m_hour)*3600000) - (TKLong(tkTime.m_minute)*60000)) / 1000); tkTime.m_milliseconds = int(time - (TKLong(tkTime.m_hour)*3600000) - (TKLong(tkTime.m_minute)*60000) - (TKLong(tkTime.m_second)*1000)); return tkTime; } inline TKTime& TKTime::Set( DWORD days, DWORD hours, DWORD minutes, DWORD seconds, DWORD milliseconds ) { m_time = UInt32x32To64( days, 24 *60 *60 ) *10000000 + UInt32x32To64( hours, 60 *60 ) *10000000 + UInt32x32To64( minutes, 60 ) *10000000 + UInt32x32To64( seconds, 10000000 ) + UInt32x32To64( milliseconds, 10000 ); return *this; } inline TKTime& TKTime::Set( WORD year, WORD month, WORD day, WORD hour, WORD minute, WORD second ) { SYSTEMTIME sys; memset( &sys, 0, sizeof(sys) ); sys.wYear = year; sys.wMonth = month; sys.wDay = day; sys.wHour = hour; sys.wMinute = minute; sys.wSecond = second; FILETIME ft; if ( ! SystemTimeToFileTime( &sys, &ft ) ) { m_time = 0; } else { (*(LARGE_INTEGER*)&m_time).HighPart = ft.dwHighDateTime; (*(LARGE_INTEGER*)&m_time).LowPart = ft.dwLowDateTime; } return *this; } inline TKTime& TKTime::Set( DWORD milliseconds ) { m_time = milliseconds * TKTimeMillisecond; return *this; } inline TKTime& TKTime::SetSystemTime( void ) { FILETIME ft; GetSystemTimeAsFileTime( &ft ); (*(LARGE_INTEGER*)&m_time).HighPart = ft.dwHighDateTime; (*(LARGE_INTEGER*)&m_time).LowPart = ft.dwLowDateTime; return *this; } inline void TKTime::LocalToUTC( void ) { FILETIME ft; ft.dwHighDateTime = (*(LARGE_INTEGER*)&m_time).HighPart; ft.dwLowDateTime = (*(LARGE_INTEGER*)&m_time).LowPart; LocalFileTimeToFileTime( &ft, &ft ); (*(LARGE_INTEGER*)&m_time).HighPart = ft.dwHighDateTime; (*(LARGE_INTEGER*)&m_time).LowPart = ft.dwLowDateTime; } inline void TKTime::UTCToLocal( void ) { FILETIME ft; ft.dwHighDateTime = (*(LARGE_INTEGER*)&m_time).HighPart; ft.dwLowDateTime = (*(LARGE_INTEGER*)&m_time).LowPart; FileTimeToLocalFileTime( &ft, &ft ); (*(LARGE_INTEGER*)&m_time).HighPart = ft.dwHighDateTime; (*(LARGE_INTEGER*)&m_time).LowPart = ft.dwLowDateTime; } TKLong CpuUseage::s_time; TKDelay CpuUseage::s_delay; int CpuUseage::s_count = 0; int CpuUseage::s_index = 0; TKLong CpuUseage::s_idleTime; TKLong CpuUseage::s_kernelTime; TKLong CpuUseage::s_userTime; int CpuUseage::s_lastCpu = 0; int CpuUseage::s_cpu[]; TKLong CpuUseage::s_lastUpTime = 0; HINSTANCE CpuUseage::s_hKernel = NULL; pfnGetSystemTimes CpuUseage::s_pfnGetSystemTimes = NULL; CpuUseage::CpuUseage() { ::InitializeCriticalSection( &m_lock ); if( s_hKernel == NULL ) { s_hKernel = LoadLibrary( _T("Kernel32.dll") ); if( s_hKernel != NULL ) { s_pfnGetSystemTimes = (pfnGetSystemTimes)GetProcAddress( s_hKernel, "GetSystemTimes" ); if( s_pfnGetSystemTimes == NULL ) { FreeLibrary( s_hKernel ); s_hKernel = NULL; } } } s_delay.Mark(); } CpuUseage::~CpuUseage() { if( s_hKernel == NULL ) { FreeLibrary( s_hKernel ); s_hKernel = NULL; } ::DeleteCriticalSection( &m_lock ); } int CpuUseage::GetCpuInfo() { TKLong sTime; int sLastCpu; TKTime sLastUpTime; { SmartLock lock( &m_lock ); sTime = s_time; sLastCpu = s_lastCpu; sLastUpTime = s_lastUpTime; } if( s_delay.MSec() <= 200 ) { //Sleep(500); return sLastCpu; } TKLong time; TKLong idleTime; TKLong kernelTime; TKLong userTime; GetSystemTimeAsFileTime( (LPFILETIME)&time ); if( sTime == 0 ) { if( s_pfnGetSystemTimes != NULL ) { s_pfnGetSystemTimes( (LPFILETIME)&idleTime, (LPFILETIME)&kernelTime, (LPFILETIME)&userTime ); } else { idleTime = 0; kernelTime = 0; userTime = 0;