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);
}
unsafe uint EtwNotificationCallback(uint requestCode, System.IntPtr context, System.IntPtr bufferSize, byte *buffer)
{
if (null == buffer)
{
//note that the return value will be ignored
return(uint.MaxValue);
}
EventTraceHeader *eventBuffer = (EventTraceHeader *)buffer;
switch (requestCode)
{
case RequestCodes.EnableEvents:
this.traceHandle = eventBuffer->HistoricalContext;
int flags = EtwNativeMethods.GetTraceEnableFlags((ulong)this.traceHandle);
int level = EtwNativeMethods.GetTraceEnableLevel((ulong)this.traceHandle);
using (Process process = Process.GetCurrentProcess())
{
if (flags == process.Id)
{
//TODO, vadim, if the listener is private, forward the level
//if not, consider using TraceFilter
//Level = LevelFromInt(level);
}
}
break;
case RequestCodes.DisableEvents:
this.traceHandle = 0;
break;
default:
this.traceHandle = 0;
break;
}
return(0);
}
