Esempio n. 1
0
// annotateAssembly annotates a set of assembly instructions with a
// set of samples. It returns a set of nodes to display.  base is an
// offset to adjust the sample addresses.
func annotateAssembly(insns []plugin.Inst, samples graph.Nodes, base uint64) graph.Nodes {
	// Add end marker to simplify printing loop.
	insns = append(insns, plugin.Inst{^uint64(0), "", "", 0})

	// Ensure samples are sorted by address.
	samples.Sort(graph.AddressOrder)

	var s int
	var asm graph.Nodes
	for ix, in := range insns[:len(insns)-1] {
		n := graph.Node{
			Info: graph.NodeInfo{
				Address: in.Addr,
				Name:    in.Text,
				File:    trimPath(in.File),
				Lineno:  in.Line,
			},
		}

		// Sum all the samples until the next instruction (to account
		// for samples attributed to the middle of an instruction).
		for next := insns[ix+1].Addr; s < len(samples) && samples[s].Info.Address-base < next; s++ {
			n.Flat += samples[s].Flat
			n.Cum += samples[s].Cum
			if samples[s].Info.File != "" {
				n.Info.File = trimPath(samples[s].Info.File)
				n.Info.Lineno = samples[s].Info.Lineno
			}
		}
		asm = append(asm, &n)
	}

	return asm
}
Esempio n. 2
0
// printSource prints an annotated source listing, include all
// functions with samples that match the regexp rpt.options.symbol.
// The sources are sorted by function name and then by filename to
// eliminate potential nondeterminism.
func printSource(w io.Writer, rpt *Report) error {
	o := rpt.options
	g := rpt.newGraph(nil)

	// Identify all the functions that match the regexp provided.
	// Group nodes for each matching function.
	var functions graph.Nodes
	functionNodes := make(map[string]graph.Nodes)
	for _, n := range g.Nodes {
		if !o.Symbol.MatchString(n.Info.Name) {
			continue
		}
		if functionNodes[n.Info.Name] == nil {
			functions = append(functions, n)
		}
		functionNodes[n.Info.Name] = append(functionNodes[n.Info.Name], n)
	}
	functions.Sort(graph.NameOrder)

	sourcePath := o.SourcePath
	if sourcePath == "" {
		wd, err := os.Getwd()
		if err != nil {
			return fmt.Errorf("Could not stat current dir: %v", err)
		}
		sourcePath = wd
	}

	fmt.Fprintf(w, "Total: %s\n", rpt.formatValue(rpt.total))
	for _, fn := range functions {
		name := fn.Info.Name

		// Identify all the source files associated to this function.
		// Group nodes for each source file.
		var sourceFiles graph.Nodes
		fileNodes := make(map[string]graph.Nodes)
		for _, n := range functionNodes[name] {
			if n.Info.File == "" {
				continue
			}
			if fileNodes[n.Info.File] == nil {
				sourceFiles = append(sourceFiles, n)
			}
			fileNodes[n.Info.File] = append(fileNodes[n.Info.File], n)
		}

		if len(sourceFiles) == 0 {
			fmt.Fprintf(w, "No source information for %s\n", name)
			continue
		}

		sourceFiles.Sort(graph.FileOrder)

		// Print each file associated with this function.
		for _, fl := range sourceFiles {
			filename := fl.Info.File
			fns := fileNodes[filename]
			flatSum, cumSum := fns.Sum()

			fnodes, _, err := getSourceFromFile(filename, sourcePath, fns, 0, 0)
			fmt.Fprintf(w, "ROUTINE ======================== %s in %s\n", name, filename)
			fmt.Fprintf(w, "%10s %10s (flat, cum) %s of Total\n",
				rpt.formatValue(flatSum), rpt.formatValue(cumSum),
				percentage(cumSum, rpt.total))

			if err != nil {
				fmt.Fprintf(w, " Error: %v\n", err)
				continue
			}

			for _, fn := range fnodes {
				fmt.Fprintf(w, "%10s %10s %6d:%s\n", valueOrDot(fn.Flat, rpt), valueOrDot(fn.Cum, rpt), fn.Info.Lineno, fn.Info.Name)
			}
		}
	}
	return nil
}
Esempio n. 3
0
// printWebSource prints an annotated source listing, include all
// functions with samples that match the regexp rpt.options.symbol.
func printWebSource(w io.Writer, rpt *Report, obj plugin.ObjTool) error {
	o := rpt.options
	g := rpt.newGraph(nil)

	// If the regexp source can be parsed as an address, also match
	// functions that land on that address.
	var address *uint64
	if hex, err := strconv.ParseUint(o.Symbol.String(), 0, 64); err == nil {
		address = &hex
	}

	// Extract interesting symbols from binary files in the profile and
	// classify samples per symbol.
	symbols := symbolsFromBinaries(rpt.prof, g, o.Symbol, address, obj)
	symNodes := nodesPerSymbol(g.Nodes, symbols)

	// Sort symbols for printing.
	var syms objSymbols
	for s := range symNodes {
		syms = append(syms, s)
	}
	sort.Sort(syms)

	if len(syms) == 0 {
		return fmt.Errorf("no samples found on routines matching: %s", o.Symbol.String())
	}

	printHeader(w, rpt)
	for _, s := range syms {
		name := s.sym.Name[0]
		// Identify sources associated to a symbol by examining
		// symbol samples. Classify samples per source file.
		var sourceFiles graph.Nodes
		fileNodes := make(map[string]graph.Nodes)
		for _, n := range symNodes[s] {
			if n.Info.File == "" {
				continue
			}
			if fileNodes[n.Info.File] == nil {
				sourceFiles = append(sourceFiles, n)
			}
			fileNodes[n.Info.File] = append(fileNodes[n.Info.File], n)
		}

		if len(sourceFiles) == 0 {
			fmt.Fprintf(w, "No source information for %s\n", name)
			continue
		}

		sourceFiles.Sort(graph.FileOrder)

		// Print each file associated with this function.
		for _, fl := range sourceFiles {
			filename := fl.Info.File
			fns := fileNodes[filename]

			asm := assemblyPerSourceLine(symbols, fns, filename, obj)
			start, end := sourceCoordinates(asm)

			fnodes, path, err := getFunctionSource(name, filename, fns, start, end)
			if err != nil {
				fnodes, path = getMissingFunctionSource(filename, asm, start, end)
			}

			flatSum, cumSum := fnodes.Sum()
			printFunctionHeader(w, name, path, flatSum, cumSum, rpt)
			for _, fn := range fnodes {
				printFunctionSourceLine(w, fn, asm[fn.Info.Lineno], rpt)
			}
			printFunctionClosing(w)
		}
	}
	printPageClosing(w)
	return nil
}