public void MultipleGCStatsEvents_StatsValuesAreLatestValues()
{
var expectedValues = new Dictionary <GCSampleType, float>()
{
{ GCSampleType.Gen0Size, 1 },
{ GCSampleType.Gen0Promoted, 2 },
{ GCSampleType.Gen1Size, 3 },
{ GCSampleType.Gen1Promoted, 4 },
{ GCSampleType.Gen2Size, 5 },
{ GCSampleType.Gen2Survived, 6 },
{ GCSampleType.LOHSize, 7 },
{ GCSampleType.LOHSurvived, 8 },
{ GCSampleType.HandlesCount, 9 },
{ GCSampleType.InducedCount, 0 },
{ GCSampleType.Gen0CollectionCount, 0 },
{ GCSampleType.Gen1CollectionCount, 0 },
{ GCSampleType.Gen2CollectionCount, 0 },
};
var expectedValues2 = expectedValues.ToDictionary(x => x.Key, x => x.Value * x.Value);
using (var listener = new GCEventsListener())
using (var src = new TestGCEventSource())
{
src.GCHeapStats_V1(
(ulong)expectedValues[GCSampleType.Gen0Size],
(ulong)expectedValues[GCSampleType.Gen0Promoted],
(ulong)expectedValues[GCSampleType.Gen1Size],
(ulong)expectedValues[GCSampleType.Gen1Promoted],
(ulong)expectedValues[GCSampleType.Gen2Size],
(ulong)expectedValues[GCSampleType.Gen2Survived],
(ulong)expectedValues[GCSampleType.LOHSize],
(ulong)expectedValues[GCSampleType.LOHSurvived], 100, 200, 300, 400,
(uint)expectedValues[GCSampleType.HandlesCount], 1);
src.GCHeapStats_V1(
(ulong)expectedValues2[GCSampleType.Gen0Size],
(ulong)expectedValues2[GCSampleType.Gen0Promoted],
(ulong)expectedValues2[GCSampleType.Gen1Size],
(ulong)expectedValues2[GCSampleType.Gen1Promoted],
(ulong)expectedValues2[GCSampleType.Gen2Size],
(ulong)expectedValues2[GCSampleType.Gen2Survived],
(ulong)expectedValues2[GCSampleType.LOHSize],
(ulong)expectedValues2[GCSampleType.LOHSurvived], 100, 200, 300, 400,
(uint)expectedValues2[GCSampleType.HandlesCount], 1);
var sampleValues = listener.Sample();
Assert.AreEqual(expectedValues2.Count, sampleValues.Count);
//Validate that each SampleType generated the expected MetricType
foreach (var q in expectedValues2)
{
Assert.IsTrue(sampleValues.ContainsKey(q.Key), $"Missing value for {q.Key}");
Assert.AreEqual(q.Value, sampleValues[q.Key], $"Mismatch on {q.Key}, expected {q.Value}, actual {q.Key}");
}
}
}
public void GCStartEventUpdatesInducedCountOnlyForSpecificReasons()
{
using (var listener = new GCEventsListener())
using (var src = new TestGCEventSource())
{
//Send GCStartEvent for every reason.
//Only two of the reasons should increment the counter
for (uint i = 0; i <= 7; i++)
{
src.GCStart_V1(1, 1, i, 1, 1);
}
var sampleValues = listener.Sample();
Assert.AreEqual(2, sampleValues[GCSampleType.InducedCount]);
}
}
public void GCStartEventUpdatesProperGenCollectionCount()
{
using (var listener = new GCEventsListener())
using (var src = new TestGCEventSource())
{
// Running Count
// G0 G1 G2
//--------------
src.GCStart_V1(1, 0, 1, 1, 1); // 1 0 0
src.GCStart_V1(1, 1, 1, 1, 1); // 2 1 0
src.GCStart_V1(1, 1, 1, 1, 1); // 3 2 0
src.GCStart_V1(1, 2, 1, 1, 1); // 4 3 1
src.GCStart_V1(1, 2, 1, 1, 1); // 5 4 2
src.GCStart_V1(1, 2, 1, 1, 1); // 6 5 3
var sampleValues = listener.Sample();
Assert.AreEqual(6, sampleValues[GCSampleType.Gen0CollectionCount]);
Assert.AreEqual(5, sampleValues[GCSampleType.Gen1CollectionCount]);
Assert.AreEqual(3, sampleValues[GCSampleType.Gen2CollectionCount]);
}
}
public void MultipleGCStartEvents_StatsValuesAreCumulative()
{
const uint reasonCDInduced1 = 1;
const uint reasonCDInduced2 = 7;
using (var listener = new GCEventsListener())
using (var src = new TestGCEventSource())
{
src.GCStart_V1(1, 1, reasonCDInduced1, 1, 1);
var sampleValues = listener.Sample();
Assert.AreEqual(1, sampleValues[GCSampleType.InducedCount]);
src.GCStart_V1(1, 1, reasonCDInduced1, 1, 1);
src.GCStart_V1(1, 1, reasonCDInduced2, 1, 1);
src.GCStart_V1(1, 1, reasonCDInduced1, 1, 1);
src.GCStart_V1(1, 1, reasonCDInduced2, 1, 1);
sampleValues = listener.Sample();
Assert.AreEqual(4, sampleValues[GCSampleType.InducedCount]);
}
}