Exemple #1
0
func main() {
	// Let GC run in its own thread
	runtime.GOMAXPROCS(2)

	flag.Parse()

	if *graphFilename == "" {
		fmt.Fprintf(os.Stderr, "No graph file specified\n")
		os.Exit(ERR_USAGE)
	}
	f, err := os.Open(*graphFilename)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Error opening graph file: %v\n", err)
		os.Exit(ERR_IO)
	}

	fi, err := os.Stat(*outputDir)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Bad output directory: %v\n", err)
		os.Exit(ERR_IO)
	}

	if !fi.IsDir() {
		fmt.Fprintf(os.Stderr, "Bad output directory: not a directory\n", err)
		os.Exit(ERR_IO)
	}

	gd, err := ioutil.ReadAll(f)
	def, err := encoding.Unmarshal(gd)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Error parsing graph file: %v\n", err)
		os.Exit(ERR_PARSE)
	}

	g := graph.NewGraph(def, graph.MaxCost)

	var t0, tprev time.Time
	round := 0
	var mergeLog *bytes.Buffer
	roundFunc := func() {
		if round == 0 {
			// This is the first time we're called

			t0 = time.Now()
			tprev = t0

			mergeLog = &bytes.Buffer{}
			if err := writeLogfile(g, round); err != nil {
				fmt.Fprintf(os.Stderr, "%v\n", err)
			}
			fmt.Printf("ROUND %v...\n", round)

			round++
			return
		}

		t := time.Now()
		diff := t.Sub(tprev)
		tprev = t
		fmt.Printf("Round %v took %v\n", round-1, diff)

		data := mergeLog.Bytes()
		if err := writeMergeLogfile(data, round); err != nil {
			fmt.Fprintf(os.Stderr, "%v\n", err)
		}
		if err := writeLogfile(g, round); err != nil {
			fmt.Fprintf(os.Stderr, "%v\n", err)
		}
		fmt.Println()
		fmt.Printf("ROUND %v...\n", round)
		round++
	}

	merge := func(c, d graph.ClusterID) {
		fmt.Fprintf(mergeLog, "%v\t%v\n", c, d)
	}

	g.MergeCallback(roundFunc, merge)
	t := time.Now()
	diff := t.Sub(tprev)
	fmt.Printf("Round %v took %v\n", round-1, diff)

	data := mergeLog.Bytes()
	if err := writeMergeLogfile(data, round); err != nil {
		fmt.Fprintf(os.Stderr, "%v\n", err)
	}
	if err := writeLogfile(g, round); err != nil {
		fmt.Fprintf(os.Stderr, "%v", err)
	}

	fmt.Println()
	diff = t.Sub(t0)
	fmt.Println("Graph stabilized.")
	fmt.Printf("%v rounds completed in %v\n", round-1, diff)
	if round != 1 {
		fmt.Printf("Average time per round: %v\n", diff/time.Duration(round-1))
	}
}
Exemple #2
0
func main() {
	flag.Parse()

	f, err := os.Open(*graphFilename)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Error opening graph file: %v\n", err)
		os.Exit(ERR_IO)
	}

	gd, err := ioutil.ReadAll(f)
	def, err := encoding.Unmarshal(gd)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Error parsing graph file: %v\n", err)
		os.Exit(ERR_PARSE)
	}

	g := graph.NewGraph(def, graph.MaxCost)

	var clusterList map[graph.ClusterID]*graph.Cluster
	if *clusters == "all" {
		clusterList = g.Clusters()
	} else {
		clusterList = make(map[graph.ClusterID]*graph.Cluster)
		arr := strings.Split(*clusters, ",")
		for _, str := range arr {
			// Allow for "--clusters=all,"
			// (in case there's a cluster
			// called "all")
			if str == "" {
				continue
			}
			cid := graph.ClusterID(str)
			c := g.Cluster(cid)
			if c == nil {
				fmt.Fprintf(os.Stderr, "Nonexistant cluster ID: %v\n", str)
				continue
			}
			clusterList[cid] = c
		}
	}

	printedYet := false
	if *basic {
		fmt.Println("BASIC STATISTICS")
		runBasic(g)
		printedYet = true
	}

	if *advanced {
		if printedYet {
			fmt.Println()
		}
		printedYet = true
		fmt.Println("ADVANCED STATISTICS")
		for _, f := range overallAnalyzers {
			f(g)
		}
	}

	if len(clusterList) > 0 {
		if printedYet {
			fmt.Println()
		}

		fmt.Println("PER-CLUSTER ANALYSIS")
		for cid, c := range clusterList {
			fmt.Printf("  %v:\n", cid)
			for _, f := range clusterAnalyzers {
				f(g, c)
			}
		}
	}
}