Ejemplo n.º 1
0
Archivo: trace.go Proyecto: sreis/go
// httpJsonTrace serves json trace, requested from within templTrace HTML.
func httpJsonTrace(w http.ResponseWriter, r *http.Request) {
	// This is an AJAX handler, so instead of http.Error we use log.Printf to log errors.
	events, err := parseEvents()
	if err != nil {
		log.Printf("failed to parse trace: %v", err)
		return
	}

	params := &traceParams{
		events:  events,
		endTime: int64(1<<63 - 1),
	}

	if goids := r.FormValue("goid"); goids != "" {
		goid, err := strconv.ParseUint(goids, 10, 64)
		if err != nil {
			log.Printf("failed to parse goid parameter '%v': %v", goids, err)
			return
		}
		analyzeGoroutines(events)
		g := gs[goid]
		params.gtrace = true
		params.startTime = g.StartTime
		params.endTime = g.EndTime
		params.maing = goid
		params.gs = trace.RelatedGoroutines(events, goid)
	}

	err = json.NewEncoder(w).Encode(generateTrace(params))
	if err != nil {
		log.Printf("failed to serialize trace: %v", err)
		return
	}
}
Ejemplo n.º 2
0
Archivo: trace.go Proyecto: helojo/go
// httpJsonTrace serves json trace, requested from within templTrace HTML.
func httpJsonTrace(w http.ResponseWriter, r *http.Request) {
	events, err := parseEvents()
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	params := &traceParams{
		events:  events,
		endTime: int64(1<<63 - 1),
	}

	if goids := r.FormValue("goid"); goids != "" {
		goid, err := strconv.ParseUint(goids, 10, 64)
		if err != nil {
			http.Error(w, fmt.Sprintf("failed to parse goid parameter '%v': %v", goids, err), http.StatusInternalServerError)
			return
		}
		analyzeGoroutines(events)
		g := gs[goid]
		params.gtrace = true
		params.startTime = g.StartTime
		params.endTime = g.EndTime
		params.maing = goid
		params.gs = trace.RelatedGoroutines(events, goid)
	}

	err = json.NewEncoder(w).Encode(generateTrace(params))
	if err != nil {
		http.Error(w, fmt.Sprintf("failed to serialize trace: %v", err), http.StatusInternalServerError)
		return
	}
}
Ejemplo n.º 3
0
// httpJsonTrace serves json trace, requested from within templTrace HTML.
func httpJsonTrace(w http.ResponseWriter, r *http.Request) {
	// This is an AJAX handler, so instead of http.Error we use log.Printf to log errors.
	events, err := parseEvents()
	if err != nil {
		log.Printf("failed to parse trace: %v", err)
		return
	}

	params := &traceParams{
		events:  events,
		endTime: int64(1<<63 - 1),
	}

	if goids := r.FormValue("goid"); goids != "" {
		// If goid argument is present, we are rendering a trace for this particular goroutine.
		goid, err := strconv.ParseUint(goids, 10, 64)
		if err != nil {
			log.Printf("failed to parse goid parameter '%v': %v", goids, err)
			return
		}
		analyzeGoroutines(events)
		g := gs[goid]
		params.gtrace = true
		params.startTime = g.StartTime
		params.endTime = g.EndTime
		params.maing = goid
		params.gs = trace.RelatedGoroutines(events, goid)
	}

	data, err := generateTrace(params)
	if err != nil {
		log.Printf("failed to generate trace: %v", err)
		return
	}

	if startStr, endStr := r.FormValue("start"), r.FormValue("end"); startStr != "" && endStr != "" {
		// If start/end arguments are present, we are rendering a range of the trace.
		start, err := strconv.ParseUint(startStr, 10, 64)
		if err != nil {
			log.Printf("failed to parse start parameter '%v': %v", startStr, err)
			return
		}
		end, err := strconv.ParseUint(endStr, 10, 64)
		if err != nil {
			log.Printf("failed to parse end parameter '%v': %v", endStr, err)
			return
		}
		if start >= uint64(len(data.Events)) || end <= start || end > uint64(len(data.Events)) {
			log.Printf("bogus start/end parameters: %v/%v, trace size %v", start, end, len(data.Events))
			return
		}
		data.Events = append(data.Events[start:end], data.Events[data.footer:]...)
	}
	err = json.NewEncoder(w).Encode(data)
	if err != nil {
		log.Printf("failed to serialize trace: %v", err)
		return
	}
}
Ejemplo n.º 4
0
func Fuzz(data []byte) int {
	events, err := trace.Parse(bytes.NewReader(data))
	if err != nil {
		if events != nil {
			panic("events is not nil on error")
		}
		return 0
	}
	trace.GoroutineStats(events)
	trace.RelatedGoroutines(events, 1)
	return 1
}
Ejemplo n.º 5
0
func parseTrace(r io.Reader) ([]*trace.Event, map[uint64]*trace.GDesc, error) {
	events, err := trace.Parse(r)
	if err != nil {
		return nil, nil, err
	}
	gs := trace.GoroutineStats(events)
	for goid := range gs {
		// We don't do any particular checks on the result at the moment.
		// But still check that RelatedGoroutines does not crash, hang, etc.
		_ = trace.RelatedGoroutines(events, goid)
	}
	return events, gs, nil
}
Ejemplo n.º 6
0
func parseTrace(t *testing.T, r io.Reader) ([]*trace.Event, map[uint64]*trace.GDesc) {
	events, err := trace.Parse(r, "")
	if err == trace.ErrTimeOrder {
		t.Skipf("skipping trace: %v", err)
	}
	if err != nil {
		t.Fatalf("failed to parse trace: %v", err)
	}
	gs := trace.GoroutineStats(events)
	for goid := range gs {
		// We don't do any particular checks on the result at the moment.
		// But still check that RelatedGoroutines does not crash, hang, etc.
		_ = trace.RelatedGoroutines(events, goid)
	}
	return events, gs
}