// may throw InvalidOperationException, Win32Exception
public float NextValue()
{
CounterSample sample;
if (changed)
{
UpdateInfo();
}
GetSample(impl, false, out sample);
float val;
if (valid_old)
{
val = CounterSampleCalculator.ComputeCounterValue(old_sample, sample);
}
else
{
val = CounterSampleCalculator.ComputeCounterValue(sample);
}
valid_old = true;
old_sample = sample;
return(val);
}
public static float Calculate(CounterSample counterSample,
CounterSample nextCounterSample)
{
return(CounterSampleCalculator.ComputeCounterValue(counterSample, nextCounterSample));
}