public LeakDetector(int minPortCount, double maxDifference, int maxPortCount,
int shortSampleSize = DefaultShortSampleSize, int longSampleSize = DefaultLongSampleSize)
{
MinPortCount = minPortCount;
if (MinPortCount < 1)
{
throw new ArgumentOutOfRangeException(nameof(minPortCount),
"MinPortCount must be at least 1");
}
MaxDifference = maxDifference;
if (MaxDifference <= 0.0d)
{
throw new ArgumentOutOfRangeException(nameof(maxDifference), "MaxDifference must be greater than 0.0");
}
MaxPortCount = maxPortCount;
if (MaxPortCount <= MinPortCount)
{
throw new ArgumentOutOfRangeException(nameof(maxPortCount),
"MaxPortCount must be greater than MinPortCount");
}
// default both EMWAs to the minimum port count.
Short = EMWA.Init(shortSampleSize, minPortCount);
Long = EMWA.Init(longSampleSize, minPortCount);
}
/// <summary>
/// Feed the next port count into the <see cref="LeakDetector" />.
/// </summary>
/// <param name="newPortCount">The updated port count.</param>
/// <returns>The current <see cref="LeakDetector" /> instance but with updated state.</returns>
public LeakDetector Next(int newPortCount)
{
CurrentPortCount = newPortCount;
if (CurrentPortCount >= MinPortCount) // time to start using samples
{
// Used to signal that we've crossed the threshold
if (!_minThresholdBreached)
{
_minThresholdBreached = true;
}
Long += CurrentPortCount;
Short += CurrentPortCount;
}
else if (_minThresholdBreached) // fell back below minimum for first time
{
_minThresholdBreached = false;
// reset averages back to starting position
Long = new EMWA(Long.Alpha, CurrentPortCount);
Short = new EMWA(Short.Alpha, CurrentPortCount);
}
return(this);
}