Method MarkEventInternal

Common/System/vtkTimerLog.cxx:133–241

------------------------------------------------------------------------------ Record a timing event and capture walltime and cputicks.

//------------------------------------------------------------------------------
// Record a timing event and capture walltime and cputicks.
void vtkTimerLog::MarkEventInternal(
  const char* event, vtkTimerLogEntry::LogEntryType type, vtkTimerLogEntry* entry)
{
  if (!vtkTimerLog::Logging)
  {
    return;
  }

  double time_diff;
  int ticks_diff;

  auto& global_entries = vtkGetTimerLogEntryVector();

  // If this the first event we're recording, allocate the
  // internal timing table and initialize WallTime and CpuTicks
  // for this first event to zero.
  if (vtkTimerLog::NextEntry == 0 && !vtkTimerLog::WrapFlag)
  {
    if (global_entries.empty())
    {
      global_entries.resize(vtkTimerLog::MaxEntries);
    }

#ifdef _WIN32
#ifdef _WIN32_WCE
    SYSTEMTIME st;
    GetLocalTime(&st);
    SystemTimeToFileTime(&st, &(vtkTimerLog::FirstWallTime));
#else
    ::ftime(&(vtkTimerLog::FirstWallTime));
#endif
#else
    gettimeofday(&(vtkTimerLog::FirstWallTime), nullptr);
    times(&FirstCpuTicks);
#endif

    if (entry)
    {
      global_entries[0] = *entry;
    }
    else
    {
      global_entries[0].Indent = vtkTimerLog::Indent;
      global_entries[0].WallTime = 0.0;
      global_entries[0].CpuTicks = 0;
      if (event)
      {
        global_entries[0].Event = event;
      }
      global_entries[0].Type = type;
      vtkTimerLog::NextEntry = 1;
    }
    return;
  }

  if (entry)
  {
    global_entries[vtkTimerLog::NextEntry] = *entry;