/// <summary>
/// Implements HistogramController interface
/// </summary>
public override void AddSample(Histogram histogram, StackSourceSample sample)
{
double bucketDuration = BucketDuration;
double startSampleInBucket = sample.TimeRelativeMSec;
int bucketIndex = (int)((sample.TimeRelativeMSec - Start) / bucketDuration);
Debug.Assert(0 <= bucketIndex && bucketIndex <= BucketCount);
if (Tree.ScalingPolicy == ScalingPolicyKind.TimeMetric)
{
// place the metric in each of the buckets it overlaps with.
var nextBucketStart = GetStartTimeForBucket((HistogramCharacterIndex)(bucketIndex + 1));
// The Math.Abs is a bit of a hack. The problem is that that sample does not
// represent time for a DIFF (because we negated it) but I rely on the fact
// that we only negate it so I can undo it
double endSample = sample.TimeRelativeMSec + Math.Abs(sample.Metric);
var metricSign = sample.Metric > 0 ? 1 : -1;
for (; ;)
{
if (BucketCount <= bucketIndex)
{
break;
}
var metricInBucket = Math.Min(nextBucketStart, endSample) - startSampleInBucket;
histogram.AddMetric((float)metricInBucket * metricSign, bucketIndex);
bucketIndex++;
startSampleInBucket = nextBucketStart;
nextBucketStart += bucketDuration;
if (startSampleInBucket > endSample)
{
break;
}
}
}
else
{
// Put the sample in the right bucket. Note that because we allow inclusive times on the end
// point we could get bucketIndex == Length, so put that sample in the last bucket.
if (bucketIndex >= BucketCount)
{
bucketIndex = BucketCount - 1;
}
histogram.AddMetric(sample.Metric, bucketIndex);
}
}
/// <summary>
/// Add a sample to a histogram controlled by this HistogramController.
/// </summary>
/// <param name="histogram">The histogram to add the sample to.</param>
/// <param name="sample">The sample to add.</param>
public override void AddSample(Histogram histogram, StackSourceSample sample)
{
histogram.AddMetric(sample.Metric, sample.Scenario);
}