// Write an event.
unsafe int IEventProvider.EventWriteTransferWrapper(
long registrationHandle,
ref EventDescriptor eventDescriptor,
IntPtr eventHandle,
Guid *activityId,
Guid *relatedActivityId,
int userDataCount,
EventProvider.EventData *userData)
{
uint eventID = (uint)eventDescriptor.EventId;
if (eventID != 0 && eventHandle != IntPtr.Zero)
{
if (userDataCount == 0)
{
EventPipeInternal.WriteEventData(eventHandle, eventID, null, 0, activityId, relatedActivityId);
return(0);
}
// If Channel == 11, this is a TraceLogging event.
// The first 3 descriptors contain event metadata that is emitted for ETW and should be discarded on EventPipe.
// EventPipe metadata is provided via the EventPipeEventProvider.DefineEventHandle.
if (eventDescriptor.Channel == 11)
{
userData = userData + 3;
userDataCount = userDataCount - 3;
Debug.Assert(userDataCount >= 0);
}
EventPipeInternal.WriteEventData(eventHandle, eventID, &userData, (uint)userDataCount, activityId, relatedActivityId);
}
return(0);
}
// Write an event.
unsafe int IEventProvider.EventWriteTransferWrapper(
long registrationHandle,
ref EventDescriptor eventDescriptor,
IntPtr eventHandle,
Guid *activityId,
Guid *relatedActivityId,
int userDataCount,
EventProvider.EventData *userData)
{
uint eventID = (uint)eventDescriptor.EventId;
if (eventID != 0 && eventHandle != IntPtr.Zero)
{
if (userDataCount == 0)
{
EventPipeInternal.WriteEventData(eventHandle, eventID, null, 0, activityId, relatedActivityId);
return(0);
}
EventPipeInternal.WriteEventData(eventHandle, eventID, &userData, (uint)userDataCount, activityId, relatedActivityId);
}
return(0);
}