message: some versions of osx does not contain CLOCK_MONOTONIC so use a different clock on osx
diff: @@ -46,6 +46,9 @@ int64_t GetTimeMicros()
  return now;
  }
  +#ifdef MAC_OSX
  +uint64_t GetStopwatch() { return 1000 * GetTimeMicros(); }
  +#else
  uint64_t GetStopwatch()
  {
  struct timespec t;
  @@ -58,6 +61,7 @@ uint64_t GetStopwatch()
  }
  return 0;
  }
  +#endif
  /** Return a time useful for the debug log */
  int64_t GetLogTimeMicros()
  