private PerformanceCounterSample GetFormattedCounterSample(IntPtr counterHandle, string name, CounterInfo info, PDH_RAW_COUNTER rawCounter)
{
IntPtr counterType = new IntPtr(0);
long fileTime = (((long)rawCounter.TimeStamp.dwHighDateTime) << 0x20) + rawCounter.TimeStamp.dwLowDateTime;
DateTime timeStamp2 = new DateTime(DateTime.FromFileTimeUtc(fileTime).Ticks, DateTimeKind.Local);
PDH_FMT_COUNTERVALUE_DOUBLE doubleFormattedCounter;
uint returnCode = Apis.PdhGetFormattedCounterValue(counterHandle, PdhFormat.PDH_FMT_NOCAP100 + PdhFormat.PDH_FMT_DOUBLE, out counterType, out doubleFormattedCounter);
//vista and above, any non-valid result is returned like this
if ((!_isPreVista && (returnCode != PdhResults.PDH_CSTATUS_VALID_DATA)) ||
//below vista, return data for no_data and invalid_data, otherwise throw
(_isPreVista && (returnCode == PdhResults.PDH_INVALID_DATA || returnCode == PdhResults.PDH_NO_DATA)))
{
return(new PerformanceCounterSample(name, this._consumerPathToHandleAndInstanceMap[name].InstanceName,
0.0, (ulong)rawCounter.FirstValue, (ulong)rawCounter.SecondValue, rawCounter.MultiCount,
//TODO: not sure if its useful to stuff a bad returnCode in for status, as VerifySamples will throw when status isn't 0... not sure that's useful
//TODO: original code just uses pdh_raw_counter.CStatus when _isPreVista
(PerformanceCounterType)info.Type, info.DefaultScale, info.TimeBase, timeStamp2, (ulong)fileTime, (doubleFormattedCounter.CStatus == 0) ? returnCode : rawCounter.CStatus));
}
else if (_isPreVista && (returnCode != PdhResults.PDH_CSTATUS_VALID_DATA))
{
throw BuildException(returnCode);
}
return(new PerformanceCounterSample(name, this._consumerPathToHandleAndInstanceMap[name].InstanceName,
doubleFormattedCounter.doubleValue, (ulong)rawCounter.FirstValue, (ulong)rawCounter.SecondValue, rawCounter.MultiCount,
(PerformanceCounterType)counterType.ToInt32(), info.DefaultScale, info.TimeBase, timeStamp2, (ulong)fileTime, doubleFormattedCounter.CStatus));
}
public static extern uint PdhGetRawCounterValue(IntPtr hCounter, out IntPtr lpdwType, out PDH_RAW_COUNTER pValue);
private PerformanceCounterSample GetFormattedCounterSample(IntPtr counterHandle, string name, CounterInfo info, PDH_RAW_COUNTER rawCounter)
{
IntPtr counterType = new IntPtr(0);
long fileTime = (((long)rawCounter.TimeStamp.dwHighDateTime) << 0x20) + rawCounter.TimeStamp.dwLowDateTime;
DateTime timeStamp2 = new DateTime(DateTime.FromFileTimeUtc(fileTime).Ticks, DateTimeKind.Local);
PDH_FMT_COUNTERVALUE_DOUBLE doubleFormattedCounter;
uint returnCode = Apis.PdhGetFormattedCounterValue(counterHandle, PdhFormat.PDH_FMT_NOCAP100 + PdhFormat.PDH_FMT_DOUBLE, out counterType, out doubleFormattedCounter);
//vista and above, any non-valid result is returned like this
if ((!_isPreVista && (returnCode != PdhResults.PDH_CSTATUS_VALID_DATA)) ||
//below vista, return data for no_data and invalid_data, otherwise throw
(_isPreVista && (returnCode == PdhResults.PDH_INVALID_DATA || returnCode == PdhResults.PDH_NO_DATA)))
{
return new PerformanceCounterSample(name, this._consumerPathToHandleAndInstanceMap[name].InstanceName,
0.0, (ulong)rawCounter.FirstValue, (ulong)rawCounter.SecondValue, rawCounter.MultiCount,
//TODO: not sure if its useful to stuff a bad returnCode in for status, as VerifySamples will throw when status isn't 0... not sure that's useful
//TODO: original code just uses pdh_raw_counter.CStatus when _isPreVista
(PerformanceCounterType)info.Type, info.DefaultScale, info.TimeBase, timeStamp2, (ulong)fileTime, (doubleFormattedCounter.CStatus == 0) ? returnCode : rawCounter.CStatus);
}
else if (_isPreVista && (returnCode != PdhResults.PDH_CSTATUS_VALID_DATA))
{
throw BuildException(returnCode);
}
return new PerformanceCounterSample(name, this._consumerPathToHandleAndInstanceMap[name].InstanceName,
doubleFormattedCounter.doubleValue, (ulong)rawCounter.FirstValue, (ulong)rawCounter.SecondValue, rawCounter.MultiCount,
(PerformanceCounterType)counterType.ToInt32(), info.DefaultScale, info.TimeBase, timeStamp2, (ulong)fileTime, doubleFormattedCounter.CStatus);
}
public static extern uint PdhGetRawCounterValue(IntPtr hCounter, out IntPtr lpdwType, out PDH_RAW_COUNTER pValue);
