static Perf_Activity()
{
s_ActivitySource = new ActivitySource("TestActivitySource");
s_ActivityListener = new ActivityListener
{
ShouldListenTo = s => s.Name == "TestActivitySource",
Sample = (ref ActivityCreationOptions <ActivityContext> o) => ActivitySamplingResult.AllDataAndRecorded
};
Dictionary <string, object> LargeTagSet = new Dictionary <string, object>();
for (int i = 0; i < 1024; i++)
{
if (i % 2 == 0)
{
LargeTagSet.Add($"Key{i}", i);
}
else
{
LargeTagSet.Add($"Key{i}", i.ToString());
}
}
ActivitySource.AddActivityListener(s_ActivityListener);
s_ActivitySmall = s_ActivitySource.StartActivity(
"TestActivity",
ActivityKind.Internal,
parentContext: default,
private void EnsureInitialized()
{
if (_HasInitialized)
{
return;
}
lock (_TraceListeners)
{
if (_HasInitialized)
{
return;
}
_CleanupThread = new Thread(CleanupThreadBody)
{
Name = $"{nameof(ActivityTraceListenerManager)}.Cleanup"
};
_CleanupThread.Start();
// Watch out doing this in prod, it's expensive.
_ActivityListener = new ActivityListener
{
ShouldListenTo = source => true, // Listens to all sources.
Sample = (ref ActivityCreationOptions <ActivityContext> options) => ActivitySamplingResult.AllData, // Causes all Activity objects to be created and populated.
ActivityStopped = OnActivityStopped
};
ActivitySource.AddActivityListener(_ActivityListener);
_HasInitialized = true;
}
_Options !.OpenedAction?.Invoke();
}
