short CProcessorUsage::GetUsage()
{
__int64 sTime;
int sLastCpu;
if (m_bLocked) return s_lastCpu;
::EnterCriticalSection( &m_cs );
m_bLocked = true;
sTime = s_time;
sLastCpu = s_lastCpu;
if(((::GetTickCount() - s_TickMark) & 0x7FFFFFFF) <= 200)
{
if (m_bLocked) ::LeaveCriticalSection( &m_cs );
m_bLocked = false;
return sLastCpu;
}
__int64 time;
__int64 idleTime;
__int64 kernelTime;
__int64 userTime;
__int64 kernelTimeProcess;
__int64 userTimeProcess;
::GetSystemTimeAsFileTime((LPFILETIME)&time);
if(!sTime)
{
GetSysTimes(idleTime, kernelTime, userTime);
FILETIME createTime;
FILETIME exitTime;
::GetProcessTimes(::GetCurrentProcess(), &createTime, &exitTime, (LPFILETIME)&kernelTimeProcess, (LPFILETIME)&userTimeProcess);
s_time = time;
s_idleTime = idleTime;
s_kernelTime = kernelTime;
s_userTime = userTime;
s_kernelTimeProcess = kernelTimeProcess;
s_userTimeProcess = userTimeProcess;
s_lastCpu = 0;
s_TickMark = ::GetTickCount();
if (m_bLocked) ::LeaveCriticalSection( &m_cs );
m_bLocked = false;
return 0;
}
__int64 div = (time - sTime);
if (div==0)
{
if (m_bLocked) ::LeaveCriticalSection( &m_cs );
m_bLocked = false;
return sLastCpu;
}
GetSysTimes(idleTime, kernelTime, userTime);
FILETIME createTime;
FILETIME exitTime;
::GetProcessTimes(::GetCurrentProcess(), &createTime, &exitTime, (LPFILETIME)&kernelTimeProcess, (LPFILETIME)&userTimeProcess);
int cpu;
int cpuProcess;
__int64 usr = userTime - s_userTime;
__int64 ker = kernelTime - s_kernelTime;
__int64 idl = idleTime - s_idleTime;
__int64 sys = (usr + ker);
if(sys)
cpu = int((sys - idl) * 100 / sys); // System Idle take 100 % of cpu;
else
cpu = 0;
cpuProcess = int((((userTimeProcess - s_userTimeProcess) + (kernelTimeProcess - s_kernelTimeProcess)) * 100 ) / div);
s_time = time;
s_idleTime = idleTime;
s_kernelTime = kernelTime;
s_userTime = userTime;
s_kernelTimeProcess = kernelTimeProcess;
s_userTimeProcess = userTimeProcess;
s_cpu[s_index] = cpu;
s_cpuProcess[s_index] = cpuProcess;
s_index++;
s_index%=5;
s_count ++;
if(s_count > 5)
s_count = 5;
cpu = 0;
int i;
for(i = 0; i < s_count; i++ )
cpu += s_cpu[i];
cpuProcess = 0;
for(i = 0; i < s_count; i++ )
cpuProcess += s_cpuProcess[i];
cpu /= s_count;
cpuProcess /= s_count;
s_lastCpu = cpuProcess;
sLastCpu = s_lastCpu;
s_TickMark = ::GetTickCount();
if (m_bLocked) ::LeaveCriticalSection( &m_cs );
m_bLocked = false;
return sLastCpu;
}
float CProcessorUsage::GetUsage(bool processOnly)
{
__int64 sTime;
float sLastCpu;
//CCritSecLock cs(m_cs);
sTime = s_time;
sLastCpu = s_lastCpu;
if(((::GetTickCount() - s_TickMark) & 0x7FFFFFFF) <= interval && !firstTime)
return sLastCpu;
firstTime=false;
__int64 time;
__int64 idleTime;
__int64 kernelTime;
__int64 userTime;
__int64 kernelTimeProcess;
__int64 userTimeProcess;
::GetSystemTimeAsFileTime((LPFILETIME)&time);
if(!sTime)
{
GetSysTimes(idleTime, kernelTime, userTime);
FILETIME createTime;
FILETIME exitTime;
::GetProcessTimes(::GetCurrentProcess(), &createTime, &exitTime, (LPFILETIME)&kernelTimeProcess, (LPFILETIME)&userTimeProcess);
s_time = time;
s_idleTime = idleTime;
s_kernelTime = kernelTime;
s_userTime = userTime;
s_kernelTimeProcess = kernelTimeProcess;
s_userTimeProcess = userTimeProcess;
s_lastCpu = 0;
s_TickMark = ::GetTickCount();
return 0;
}
__int64 div = (time - sTime);
GetSysTimes(idleTime, kernelTime, userTime);
FILETIME createTime;
FILETIME exitTime;
::GetProcessTimes(::GetCurrentProcess(), &createTime, &exitTime, (LPFILETIME)&kernelTimeProcess, (LPFILETIME)&userTimeProcess);
float cpu;
float cpuProcess;
__int64 usr = userTime - s_userTime;
__int64 ker = kernelTime - s_kernelTime;
__int64 idl = idleTime - s_idleTime;
__int64 sys = (usr + ker);
if(sys)
cpu = float((sys - idl) * 100 / sys); // System Idle take 100 % of cpu;
else
cpu = 0;
cpuProcess = float((((userTimeProcess - s_userTimeProcess) + (kernelTimeProcess - s_kernelTimeProcess)) * 100 ) / div);
s_time = time;
s_idleTime = idleTime;
s_kernelTime = kernelTime;
s_userTime = userTime;
s_kernelTimeProcess = kernelTimeProcess;
s_userTimeProcess = userTimeProcess;
s_cpu[(s_index ++) %5] = cpu;
s_cpuProcess[(s_index++) %5] = cpuProcess;
s_count ++;
if(s_count > 5)
s_count = 5;
cpu = 0;
int i;
for(i = 0; i < s_count; i++ )
cpu += s_cpu[i];
cpuProcess = 0;
for(i = 0; i < s_count; i++ )
cpuProcess += s_cpuProcess[i];
cpu /= s_count;
cpuProcess /= s_count;
s_lastCpu = processOnly ? cpuProcess : cpu;
sLastCpu = s_lastCpu;
s_TickMark = ::GetTickCount();
return sLastCpu;
}
