protected override CPUUsage NextValue()
{
Int64 idleTime;
Int64 kernelTime;
Int64 userTime;
NtKernel.SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION sysProcessorPerfInfo = NtKernel.QuerySystemProcessorPerformanceInfomation(1)[0];
idleTime = sysProcessorPerfInfo.IdleTime;
kernelTime = sysProcessorPerfInfo.KernelTime - idleTime;
userTime = sysProcessorPerfInfo.UserTime;
Int64 idleTimeDiff = idleTime - idleTimePrev;
Int64 userTimeDiff = userTime - userTimePrev;
Int64 kernelTimeDiff = kernelTime - kernelTimePrev;
Int64 totalTimeDiff = idleTimeDiff + userTimeDiff + kernelTimeDiff;
idleTimePrev = idleTime;
kernelTimePrev = kernelTime;
userTimePrev = userTime;
return(new CPUUsage(
(Int32)(((Double)userTimeDiff / totalTimeDiff) * 100),
(Int32)(((Double)kernelTimeDiff / totalTimeDiff) * 100),
(Int32)(((Double)idleTimeDiff / totalTimeDiff) * 100)
));
}
protected override MemoryUsage NextValue()
{
NtKernel.SYSTEM_PERFORMANCE_INFORMATION sysPerfInfo = NtKernel.QuerySystemPerformanceInformation();
UInt32 pageSize = 4096;
_commitLimit = (UInt64)(sysPerfInfo.TotalCommitLimit * pageSize);
Int32 pageIn = (Int32)((sysPerfInfo.PagesRead - _prevPagesRead) / ((TimeSpan)(DateTime.Now - _prevCollectTime)).TotalSeconds);
Int32 pageOut = (Int32)((sysPerfInfo.PagefilePagesWritten - _prevPagesWritten) / ((TimeSpan)(DateTime.Now - _prevCollectTime)).TotalSeconds);
_prevCollectTime = DateTime.Now;
_prevPagesRead = sysPerfInfo.PagesRead;
_prevPagesWritten = sysPerfInfo.PagefilePagesWritten;
return(new MemoryUsage(
(UInt64)sysPerfInfo.AvailablePages * pageSize,
(UInt64)sysPerfInfo.TotalCommittedPages * pageSize,
pageIn,
pageOut,
(UInt64)sysPerfInfo.MmSystemCachePage * pageSize,
(UInt64)sysPerfInfo.PagedPoolUsage * pageSize,
(UInt64)sysPerfInfo.NonPagedPoolUsage * pageSize,
(UInt64)sysPerfInfo.SystemDriverPage * pageSize,
(UInt64)sysPerfInfo.SystemCodePage * pageSize));
}
public NtKernel.SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION[] ProcessorPerformances()
{
return(NtKernel.QuerySystemProcessorPerformanceInfomation(processorCount));
}
protected MachineStatus()
{
NtKernel.SYSTEM_BASIC_INFORMATION info = NtKernel.QuerySystemBasicInformation();
processorCount = info.NumberProcessors;
}