internal static EtwHandle RegisterTraceGuids(EtwTraceCallback cbFunc, Guid controlGuid, TraceGuidRegistration registration)
{
ulong regHandle = 0L;
uint num2 = EtwNativeMethods.RegisterTraceGuids(cbFunc, null, ref controlGuid, 1, ref registration, null, null, out regHandle);
if (num2 != 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new Win32Exception((int)num2));
}
return(new EtwHandle(regHandle));
}
private unsafe uint EtwNotificationCallback(uint requestCode, IntPtr context, IntPtr bufferSize, byte *buffer)
{
if (null == buffer)
{
return(uint.MaxValue);
}
if (DebugTrace.Info)
{
DebugTrace.Trace(TraceLevel.Info, "EtwNotificationCallback is called!");
}
EventTraceHeader *headerPtr = (EventTraceHeader *)buffer;
switch (requestCode)
{
case 4:
{
this.traceHandle = headerPtr->HistoricalContext;
uint traceEnableFlags = EtwNativeMethods.GetTraceEnableFlags(this.traceHandle);
int traceEnableLevel = EtwNativeMethods.GetTraceEnableLevel(this.traceHandle);
if (DebugTrace.Info)
{
DebugTrace.Trace(TraceLevel.Info, "EtwNotificationCallback: EnableEvents: Current DiagnosticTrace Level {0}", DiagnosticUtility.Level);
DebugTrace.Trace(TraceLevel.Info, "EtwNotificationCallback: EnableEvents: flags = {0} , level = {1}", traceEnableFlags, traceEnableLevel);
}
using (Process process = Process.GetCurrentProcess())
{
if ((traceEnableFlags == process.Id) && (traceEnableLevel > 0))
{
DiagnosticUtility.Level = this.LevelFromInt(traceEnableLevel);
if (DebugTrace.Info)
{
DebugTrace.Trace(TraceLevel.Info, "EtwNotificationCallback: New DiagnosticTrace Level {0}", DiagnosticUtility.Level);
}
}
break;
}
}
case 5:
this.traceHandle = 0L;
if (DebugTrace.Info)
{
DebugTrace.Trace(TraceLevel.Info, "EtwNotificationCallback: Disabling Session Handle!!");
}
break;
}
return(0);
}
internal unsafe uint Trace(MofEvent *evt)
{
return(EtwNativeMethods.TraceEvent(this.traceHandle, (char *)evt));
}
