if err != nil {
				log.Printf("failed to parse end parameter %q: %v", endStr, err)
				return
			}
		}

		c := traceviewer.ViewerDataTraceConsumer(w, start, end)
		if err := generateTrace(parsed, opts, c); err != nil {
			log.Printf("failed to generate trace: %v", err)
		}
	})
}

// traceContext is a wrapper around a traceviewer.Emitter with some additional

	// TODO(mknyszek): Split traces by generation by doing a quick first pass over the
	// trace to identify all the generation boundaries.
	s, c := traceviewer.SplittingTraceConsumer(100 << 20) // 100 MiB
	if err := generateTrace(parsed, defaultGenOpts(), c); err != nil {
		return nil, err
	}
	return s.Ranges, nil
}

func debugProcessedEvents(trc io.Reader) error {
	tr, err := trace.NewReader(trc)
	if err != nil {