private void OpenEtlFile()
{
// Retained the delegate objects to avoid GC.
EventRecordCallbackRetainer = new EventRecordCallback(EventRecordCallback);
BufferCallbackRetainer = new BufferCallback(BufferCallback);
// Open the ETL log file.
EVENT_TRACE_LOGFILE traceLogFile = new EVENT_TRACE_LOGFILE
{
LogFileName = EtlFilePath,
ProcessTraceMode = EventTracingApi.PROCESS_TRACE_MODE_EVENT_RECORD,
BufferCallback = BufferCallbackRetainer,
EventCallback = EventRecordCallbackRetainer,
};
TraceHandle = EventTracingApi.OpenTrace(ref traceLogFile);
if (EventTracingApi.IsInvalidProcessTraceHandle(TraceHandle))
{
var win32ErrorCode = Marshal.GetLastWin32Error();
string exceptionMessage;
if (win32ErrorCode == Win32ErrorCode.ERROR_FILE_CORRUPT)
{
exceptionMessage = string.Format("OpenTrace function failed. The file '{0}' is corrupted.", EtlFilePath);
}
else
{
exceptionMessage = string.Format("OpenTrace function failed. The file tried to open was '{0}'.", EtlFilePath);
}
throw new Win32Exception(win32ErrorCode, exceptionMessage);
}
}
public void Dispose()
{
if (!EventTracingApi.IsInvalidProcessTraceHandle(TraceHandle))
{
EventTracingApi.CloseTrace(TraceHandle);
}
}