_, ok := filter[trace.GoID(resource)]
			return ok
		})
	}
	return gg
}

func (g *goroutineGenerator) Sync() {
	g.globalRangeGenerator.Sync()
}

func (g *goroutineGenerator) GoroutineLabel(ctx *traceContext, ev *trace.Event) {
	l := ev.Label()
	g.gStates[l.Resource.Goroutine()].setLabel(l.Label)
}

func (g *goroutineGenerator) GoroutineRange(ctx *traceContext, ev *trace.Event) {
	r := ev.Range()

	StackSample(ctx *traceContext, ev *trace.Event)
	GlobalRange(ctx *traceContext, ev *trace.Event)
	GlobalMetric(ctx *traceContext, ev *trace.Event)

	// Goroutine parts.
	GoroutineLabel(ctx *traceContext, ev *trace.Event)
	GoroutineRange(ctx *traceContext, ev *trace.Event)
	GoroutineTransition(ctx *traceContext, ev *trace.Event)

	// Proc parts.
	ProcRange(ctx *traceContext, ev *trace.Event)

	tg.threads = make(map[trace.ThreadID]struct{})
	return tg
}

func (g *threadGenerator) Sync() {
	g.globalRangeGenerator.Sync()
}

func (g *threadGenerator) GoroutineLabel(ctx *traceContext, ev *trace.Event) {
	l := ev.Label()
	g.gStates[l.Resource.Goroutine()].setLabel(l.Label)
}

func (g *threadGenerator) GoroutineRange(ctx *traceContext, ev *trace.Event) {
	r := ev.Range()

	pg.inSyscall = make(map[trace.ProcID]*gState[trace.ProcID])
	return pg
}

func (g *procGenerator) Sync() {
	g.globalRangeGenerator.Sync()
	g.procRangeGenerator.Sync()
}

func (g *procGenerator) GoroutineLabel(ctx *traceContext, ev *trace.Event) {
	l := ev.Label()
	g.gStates[l.Resource.Goroutine()].setLabel(l.Label)
}

func (g *procGenerator) GoroutineRange(ctx *traceContext, ev *trace.Event) {
	r := ev.Range()