Bump google.golang.org/api

vendor/github.com/google/pprof/internal/driver/cli.go

@@ -0,0 +1,358 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/google/pprof/internal/binutils"
+	"github.com/google/pprof/internal/plugin"
+)
+
+type source struct {
+	Sources   []string
+	ExecName  string
+	BuildID   string
+	Base      []string
+	DiffBase  bool
+	Normalize bool
+
+	Seconds            int
+	Timeout            int
+	Symbolize          string
+	HTTPHostport       string
+	HTTPDisableBrowser bool
+	Comment            string
+}
+
+// parseFlags parses the command lines through the specified flags package
+// and returns the source of the profile and optionally the command
+// for the kind of report to generate (nil for interactive use).
+func parseFlags(o *plugin.Options) (*source, []string, error) {
+	flag := o.Flagset
+	// Comparisons.
+	flagDiffBase := flag.StringList("diff_base", "", "Source of base profile for comparison")
+	flagBase := flag.StringList("base", "", "Source of base profile for profile subtraction")
+	// Source options.
+	flagSymbolize := flag.String("symbolize", "", "Options for profile symbolization")
+	flagBuildID := flag.String("buildid", "", "Override build id for first mapping")
+	flagTimeout := flag.Int("timeout", -1, "Timeout in seconds for fetching a profile")
+	flagAddComment := flag.String("add_comment", "", "Annotation string to record in the profile")
+	// CPU profile options
+	flagSeconds := flag.Int("seconds", -1, "Length of time for dynamic profiles")
+	// Heap profile options
+	flagInUseSpace := flag.Bool("inuse_space", false, "Display in-use memory size")
+	flagInUseObjects := flag.Bool("inuse_objects", false, "Display in-use object counts")
+	flagAllocSpace := flag.Bool("alloc_space", false, "Display allocated memory size")
+	flagAllocObjects := flag.Bool("alloc_objects", false, "Display allocated object counts")
+	// Contention profile options
+	flagTotalDelay := flag.Bool("total_delay", false, "Display total delay at each region")
+	flagContentions := flag.Bool("contentions", false, "Display number of delays at each region")
+	flagMeanDelay := flag.Bool("mean_delay", false, "Display mean delay at each region")
+	flagTools := flag.String("tools", os.Getenv("PPROF_TOOLS"), "Path for object tool pathnames")
+
+	flagHTTP := flag.String("http", "", "Present interactive web UI at the specified http host:port")
+	flagNoBrowser := flag.Bool("no_browser", false, "Skip opening a browswer for the interactive web UI")
+
+	// Flags used during command processing
+	installedFlags := installFlags(flag)
+
+	flagCommands := make(map[string]*bool)
+	flagParamCommands := make(map[string]*string)
+	for name, cmd := range pprofCommands {
+		if cmd.hasParam {
+			flagParamCommands[name] = flag.String(name, "", "Generate a report in "+name+" format, matching regexp")
+		} else {
+			flagCommands[name] = flag.Bool(name, false, "Generate a report in "+name+" format")
+		}
+	}
+
+	args := flag.Parse(func() {
+		o.UI.Print(usageMsgHdr +
+			usage(true) +
+			usageMsgSrc +
+			flag.ExtraUsage() +
+			usageMsgVars)
+	})
+	if len(args) == 0 {
+		return nil, nil, errors.New("no profile source specified")
+	}
+
+	var execName string
+	// Recognize first argument as an executable or buildid override.
+	if len(args) > 1 {
+		arg0 := args[0]
+		if file, err := o.Obj.Open(arg0, 0, ^uint64(0), 0); err == nil {
+			file.Close()
+			execName = arg0
+			args = args[1:]
+		} else if *flagBuildID == "" && isBuildID(arg0) {
+			*flagBuildID = arg0
+			args = args[1:]
+		}
+	}
+
+	// Report conflicting options
+	if err := updateFlags(installedFlags); err != nil {
+		return nil, nil, err
+	}
+
+	cmd, err := outputFormat(flagCommands, flagParamCommands)
+	if err != nil {
+		return nil, nil, err
+	}
+	if cmd != nil && *flagHTTP != "" {
+		return nil, nil, errors.New("-http is not compatible with an output format on the command line")
+	}
+
+	if *flagNoBrowser && *flagHTTP == "" {
+		return nil, nil, errors.New("-no_browser only makes sense with -http")
+	}
+
+	si := pprofVariables["sample_index"].value
+	si = sampleIndex(flagTotalDelay, si, "delay", "-total_delay", o.UI)
+	si = sampleIndex(flagMeanDelay, si, "delay", "-mean_delay", o.UI)
+	si = sampleIndex(flagContentions, si, "contentions", "-contentions", o.UI)
+	si = sampleIndex(flagInUseSpace, si, "inuse_space", "-inuse_space", o.UI)
+	si = sampleIndex(flagInUseObjects, si, "inuse_objects", "-inuse_objects", o.UI)
+	si = sampleIndex(flagAllocSpace, si, "alloc_space", "-alloc_space", o.UI)
+	si = sampleIndex(flagAllocObjects, si, "alloc_objects", "-alloc_objects", o.UI)
+	pprofVariables.set("sample_index", si)
+
+	if *flagMeanDelay {
+		pprofVariables.set("mean", "true")
+	}
+
+	source := &source{
+		Sources:            args,
+		ExecName:           execName,
+		BuildID:            *flagBuildID,
+		Seconds:            *flagSeconds,
+		Timeout:            *flagTimeout,
+		Symbolize:          *flagSymbolize,
+		HTTPHostport:       *flagHTTP,
+		HTTPDisableBrowser: *flagNoBrowser,
+		Comment:            *flagAddComment,
+	}
+
+	if err := source.addBaseProfiles(*flagBase, *flagDiffBase); err != nil {
+		return nil, nil, err
+	}
+
+	normalize := pprofVariables["normalize"].boolValue()
+	if normalize && len(source.Base) == 0 {
+		return nil, nil, errors.New("must have base profile to normalize by")
+	}
+	source.Normalize = normalize
+
+	if bu, ok := o.Obj.(*binutils.Binutils); ok {
+		bu.SetTools(*flagTools)
+	}
+	return source, cmd, nil
+}
+
+// addBaseProfiles adds the list of base profiles or diff base profiles to
+// the source. This function will return an error if both base and diff base
+// profiles are specified.
+func (source *source) addBaseProfiles(flagBase, flagDiffBase []*string) error {
+	base, diffBase := dropEmpty(flagBase), dropEmpty(flagDiffBase)
+	if len(base) > 0 && len(diffBase) > 0 {
+		return errors.New("-base and -diff_base flags cannot both be specified")
+	}
+
+	source.Base = base
+	if len(diffBase) > 0 {
+		source.Base, source.DiffBase = diffBase, true
+	}
+	return nil
+}
+
+// dropEmpty list takes a slice of string pointers, and outputs a slice of
+// non-empty strings associated with the flag.
+func dropEmpty(list []*string) []string {
+	var l []string
+	for _, s := range list {
+		if *s != "" {
+			l = append(l, *s)
+		}
+	}
+	return l
+}
+
+// installFlags creates command line flags for pprof variables.
+func installFlags(flag plugin.FlagSet) flagsInstalled {
+	f := flagsInstalled{
+		ints:    make(map[string]*int),
+		bools:   make(map[string]*bool),
+		floats:  make(map[string]*float64),
+		strings: make(map[string]*string),
+	}
+	for n, v := range pprofVariables {
+		switch v.kind {
+		case boolKind:
+			if v.group != "" {
+				// Set all radio variables to false to identify conflicts.
+				f.bools[n] = flag.Bool(n, false, v.help)
+			} else {
+				f.bools[n] = flag.Bool(n, v.boolValue(), v.help)
+			}
+		case intKind:
+			f.ints[n] = flag.Int(n, v.intValue(), v.help)
+		case floatKind:
+			f.floats[n] = flag.Float64(n, v.floatValue(), v.help)
+		case stringKind:
+			f.strings[n] = flag.String(n, v.value, v.help)
+		}
+	}
+	return f
+}
+
+// updateFlags updates the pprof variables according to the flags
+// parsed in the command line.
+func updateFlags(f flagsInstalled) error {
+	vars := pprofVariables
+	groups := map[string]string{}
+	for n, v := range f.bools {
+		vars.set(n, fmt.Sprint(*v))
+		if *v {
+			g := vars[n].group
+			if g != "" && groups[g] != "" {
+				return fmt.Errorf("conflicting options %q and %q set", n, groups[g])
+			}
+			groups[g] = n
+		}
+	}
+	for n, v := range f.ints {
+		vars.set(n, fmt.Sprint(*v))
+	}
+	for n, v := range f.floats {
+		vars.set(n, fmt.Sprint(*v))
+	}
+	for n, v := range f.strings {
+		vars.set(n, *v)
+	}
+	return nil
+}
+
+type flagsInstalled struct {
+	ints    map[string]*int
+	bools   map[string]*bool
+	floats  map[string]*float64
+	strings map[string]*string
+}
+
+// isBuildID determines if the profile may contain a build ID, by
+// checking that it is a string of hex digits.
+func isBuildID(id string) bool {
+	return strings.Trim(id, "0123456789abcdefABCDEF") == ""
+}
+
+func sampleIndex(flag *bool, si string, sampleType, option string, ui plugin.UI) string {
+	if *flag {
+		if si == "" {
+			return sampleType
+		}
+		ui.PrintErr("Multiple value selections, ignoring ", option)
+	}
+	return si
+}
+
+func outputFormat(bcmd map[string]*bool, acmd map[string]*string) (cmd []string, err error) {
+	for n, b := range bcmd {
+		if *b {
+			if cmd != nil {
+				return nil, errors.New("must set at most one output format")
+			}
+			cmd = []string{n}
+		}
+	}
+	for n, s := range acmd {
+		if *s != "" {
+			if cmd != nil {
+				return nil, errors.New("must set at most one output format")
+			}
+			cmd = []string{n, *s}
+		}
+	}
+	return cmd, nil
+}
+
+var usageMsgHdr = `usage:
+
+Produce output in the specified format.
+
+   pprof <format> [options] [binary] <source> ...
+
+Omit the format to get an interactive shell whose commands can be used
+to generate various views of a profile
+
+   pprof [options] [binary] <source> ...
+
+Omit the format and provide the "-http" flag to get an interactive web
+interface at the specified host:port that can be used to navigate through
+various views of a profile.
+
+   pprof -http [host]:[port] [options] [binary] <source> ...
+
+Details:
+`
+
+var usageMsgSrc = "\n\n" +
+	"  Source options:\n" +
+	"    -seconds              Duration for time-based profile collection\n" +
+	"    -timeout              Timeout in seconds for profile collection\n" +
+	"    -buildid              Override build id for main binary\n" +
+	"    -add_comment          Free-form annotation to add to the profile\n" +
+	"                          Displayed on some reports or with pprof -comments\n" +
+	"    -diff_base source     Source of base profile for comparison\n" +
+	"    -base source          Source of base profile for profile subtraction\n" +
+	"    profile.pb.gz         Profile in compressed protobuf format\n" +
+	"    legacy_profile        Profile in legacy pprof format\n" +
+	"    http://host/profile   URL for profile handler to retrieve\n" +
+	"    -symbolize=           Controls source of symbol information\n" +
+	"      none                  Do not attempt symbolization\n" +
+	"      local                 Examine only local binaries\n" +
+	"      fastlocal             Only get function names from local binaries\n" +
+	"      remote                Do not examine local binaries\n" +
+	"      force                 Force re-symbolization\n" +
+	"    Binary                  Local path or build id of binary for symbolization\n"
+
+var usageMsgVars = "\n\n" +
+	"  Misc options:\n" +
+	"   -http              Provide web interface at host:port.\n" +
+	"                      Host is optional and 'localhost' by default.\n" +
+	"                      Port is optional and a randomly available port by default.\n" +
+	"   -no_browser        Skip opening a browser for the interactive web UI.\n" +
+	"   -tools             Search path for object tools\n" +
+	"\n" +
+	"  Legacy convenience options:\n" +
+	"   -inuse_space           Same as -sample_index=inuse_space\n" +
+	"   -inuse_objects         Same as -sample_index=inuse_objects\n" +
+	"   -alloc_space           Same as -sample_index=alloc_space\n" +
+	"   -alloc_objects         Same as -sample_index=alloc_objects\n" +
+	"   -total_delay           Same as -sample_index=delay\n" +
+	"   -contentions           Same as -sample_index=contentions\n" +
+	"   -mean_delay            Same as -mean -sample_index=delay\n" +
+	"\n" +
+	"  Environment Variables:\n" +
+	"   PPROF_TMPDIR       Location for saved profiles (default $HOME/pprof)\n" +
+	"   PPROF_TOOLS        Search path for object-level tools\n" +
+	"   PPROF_BINARY_PATH  Search path for local binary files\n" +
+	"                      default: $HOME/pprof/binaries\n" +
+	"                      searches $name, $path, $buildid/$name, $path/$buildid\n" +
+	"   * On Windows, %USERPROFILE% is used instead of $HOME"

vendor/github.com/google/pprof/internal/driver/commands.go

@@ -0,0 +1,566 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"runtime"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/internal/report"
+)
+
+// commands describes the commands accepted by pprof.
+type commands map[string]*command
+
+// command describes the actions for a pprof command. Includes a
+// function for command-line completion, the report format to use
+// during report generation, any postprocessing functions, and whether
+// the command expects a regexp parameter (typically a function name).
+type command struct {
+	format      int           // report format to generate
+	postProcess PostProcessor // postprocessing to run on report
+	visualizer  PostProcessor // display output using some callback
+	hasParam    bool          // collect a parameter from the CLI
+	description string        // single-line description text saying what the command does
+	usage       string        // multi-line help text saying how the command is used
+}
+
+// help returns a help string for a command.
+func (c *command) help(name string) string {
+	message := c.description + "\n"
+	if c.usage != "" {
+		message += "  Usage:\n"
+		lines := strings.Split(c.usage, "\n")
+		for _, line := range lines {
+			message += fmt.Sprintf("    %s\n", line)
+		}
+	}
+	return message + "\n"
+}
+
+// AddCommand adds an additional command to the set of commands
+// accepted by pprof. This enables extensions to add new commands for
+// specialized visualization formats. If the command specified already
+// exists, it is overwritten.
+func AddCommand(cmd string, format int, post PostProcessor, desc, usage string) {
+	pprofCommands[cmd] = &command{format, post, nil, false, desc, usage}
+}
+
+// SetVariableDefault sets the default value for a pprof
+// variable. This enables extensions to set their own defaults.
+func SetVariableDefault(variable, value string) {
+	if v := pprofVariables[variable]; v != nil {
+		v.value = value
+	}
+}
+
+// PostProcessor is a function that applies post-processing to the report output
+type PostProcessor func(input io.Reader, output io.Writer, ui plugin.UI) error
+
+// interactiveMode is true if pprof is running on interactive mode, reading
+// commands from its shell.
+var interactiveMode = false
+
+// pprofCommands are the report generation commands recognized by pprof.
+var pprofCommands = commands{
+	// Commands that require no post-processing.
+	"comments": {report.Comments, nil, nil, false, "Output all profile comments", ""},
+	"disasm":   {report.Dis, nil, nil, true, "Output assembly listings annotated with samples", listHelp("disasm", true)},
+	"dot":      {report.Dot, nil, nil, false, "Outputs a graph in DOT format", reportHelp("dot", false, true)},
+	"list":     {report.List, nil, nil, true, "Output annotated source for functions matching regexp", listHelp("list", false)},
+	"peek":     {report.Tree, nil, nil, true, "Output callers/callees of functions matching regexp", "peek func_regex\nDisplay callers and callees of functions matching func_regex."},
+	"raw":      {report.Raw, nil, nil, false, "Outputs a text representation of the raw profile", ""},
+	"tags":     {report.Tags, nil, nil, false, "Outputs all tags in the profile", "tags [tag_regex]* [-ignore_regex]* [>file]\nList tags with key:value matching tag_regex and exclude ignore_regex."},
+	"text":     {report.Text, nil, nil, false, "Outputs top entries in text form", reportHelp("text", true, true)},
+	"top":      {report.Text, nil, nil, false, "Outputs top entries in text form", reportHelp("top", true, true)},
+	"traces":   {report.Traces, nil, nil, false, "Outputs all profile samples in text form", ""},
+	"tree":     {report.Tree, nil, nil, false, "Outputs a text rendering of call graph", reportHelp("tree", true, true)},
+
+	// Save binary formats to a file
+	"callgrind": {report.Callgrind, nil, awayFromTTY("callgraph.out"), false, "Outputs a graph in callgrind format", reportHelp("callgrind", false, true)},
+	"proto":     {report.Proto, nil, awayFromTTY("pb.gz"), false, "Outputs the profile in compressed protobuf format", ""},
+	"topproto":  {report.TopProto, nil, awayFromTTY("pb.gz"), false, "Outputs top entries in compressed protobuf format", ""},
+
+	// Generate report in DOT format and postprocess with dot
+	"gif": {report.Dot, invokeDot("gif"), awayFromTTY("gif"), false, "Outputs a graph image in GIF format", reportHelp("gif", false, true)},
+	"pdf": {report.Dot, invokeDot("pdf"), awayFromTTY("pdf"), false, "Outputs a graph in PDF format", reportHelp("pdf", false, true)},
+	"png": {report.Dot, invokeDot("png"), awayFromTTY("png"), false, "Outputs a graph image in PNG format", reportHelp("png", false, true)},
+	"ps":  {report.Dot, invokeDot("ps"), awayFromTTY("ps"), false, "Outputs a graph in PS format", reportHelp("ps", false, true)},
+
+	// Save SVG output into a file
+	"svg": {report.Dot, massageDotSVG(), awayFromTTY("svg"), false, "Outputs a graph in SVG format", reportHelp("svg", false, true)},
+
+	// Visualize postprocessed dot output
+	"eog":    {report.Dot, invokeDot("svg"), invokeVisualizer("svg", []string{"eog"}), false, "Visualize graph through eog", reportHelp("eog", false, false)},
+	"evince": {report.Dot, invokeDot("pdf"), invokeVisualizer("pdf", []string{"evince"}), false, "Visualize graph through evince", reportHelp("evince", false, false)},
+	"gv":     {report.Dot, invokeDot("ps"), invokeVisualizer("ps", []string{"gv --noantialias"}), false, "Visualize graph through gv", reportHelp("gv", false, false)},
+	"web":    {report.Dot, massageDotSVG(), invokeVisualizer("svg", browsers()), false, "Visualize graph through web browser", reportHelp("web", false, false)},
+
+	// Visualize callgrind output
+	"kcachegrind": {report.Callgrind, nil, invokeVisualizer("grind", kcachegrind), false, "Visualize report in KCachegrind", reportHelp("kcachegrind", false, false)},
+
+	// Visualize HTML directly generated by report.
+	"weblist": {report.WebList, nil, invokeVisualizer("html", browsers()), true, "Display annotated source in a web browser", listHelp("weblist", false)},
+}
+
+// pprofVariables are the configuration parameters that affect the
+// reported generated by pprof.
+var pprofVariables = variables{
+	// Filename for file-based output formats, stdout by default.
+	"output": &variable{stringKind, "", "", helpText("Output filename for file-based outputs")},
+
+	// Comparisons.
+	"drop_negative": &variable{boolKind, "f", "", helpText(
+		"Ignore negative differences",
+		"Do not show any locations with values <0.")},
+
+	// Graph handling options.
+	"call_tree": &variable{boolKind, "f", "", helpText(
+		"Create a context-sensitive call tree",
+		"Treat locations reached through different paths as separate.")},
+
+	// Display options.
+	"relative_percentages": &variable{boolKind, "f", "", helpText(
+		"Show percentages relative to focused subgraph",
+		"If unset, percentages are relative to full graph before focusing",
+		"to facilitate comparison with original graph.")},
+	"unit": &variable{stringKind, "minimum", "", helpText(
+		"Measurement units to display",
+		"Scale the sample values to this unit.",
+		"For time-based profiles, use seconds, milliseconds, nanoseconds, etc.",
+		"For memory profiles, use megabytes, kilobytes, bytes, etc.",
+		"Using auto will scale each value independently to the most natural unit.")},
+	"compact_labels": &variable{boolKind, "f", "", "Show minimal headers"},
+	"source_path":    &variable{stringKind, "", "", "Search path for source files"},
+	"trim_path":      &variable{stringKind, "", "", "Path to trim from source paths before search"},
+
+	// Filtering options
+	"nodecount": &variable{intKind, "-1", "", helpText(
+		"Max number of nodes to show",
+		"Uses heuristics to limit the number of locations to be displayed.",
+		"On graphs, dotted edges represent paths through nodes that have been removed.")},
+	"nodefraction": &variable{floatKind, "0.005", "", "Hide nodes below <f>*total"},
+	"edgefraction": &variable{floatKind, "0.001", "", "Hide edges below <f>*total"},
+	"trim": &variable{boolKind, "t", "", helpText(
+		"Honor nodefraction/edgefraction/nodecount defaults",
+		"Set to false to get the full profile, without any trimming.")},
+	"focus": &variable{stringKind, "", "", helpText(
+		"Restricts to samples going through a node matching regexp",
+		"Discard samples that do not include a node matching this regexp.",
+		"Matching includes the function name, filename or object name.")},
+	"ignore": &variable{stringKind, "", "", helpText(
+		"Skips paths going through any nodes matching regexp",
+		"If set, discard samples that include a node matching this regexp.",
+		"Matching includes the function name, filename or object name.")},
+	"prune_from": &variable{stringKind, "", "", helpText(
+		"Drops any functions below the matched frame.",
+		"If set, any frames matching the specified regexp and any frames",
+		"below it will be dropped from each sample.")},
+	"hide": &variable{stringKind, "", "", helpText(
+		"Skips nodes matching regexp",
+		"Discard nodes that match this location.",
+		"Other nodes from samples that include this location will be shown.",
+		"Matching includes the function name, filename or object name.")},
+	"show": &variable{stringKind, "", "", helpText(
+		"Only show nodes matching regexp",
+		"If set, only show nodes that match this location.",
+		"Matching includes the function name, filename or object name.")},
+	"show_from": &variable{stringKind, "", "", helpText(
+		"Drops functions above the highest matched frame.",
+		"If set, all frames above the highest match are dropped from every sample.",
+		"Matching includes the function name, filename or object name.")},
+	"tagfocus": &variable{stringKind, "", "", helpText(
+		"Restricts to samples with tags in range or matched by regexp",
+		"Use name=value syntax to limit the matching to a specific tag.",
+		"Numeric tag filter examples: 1kb, 1kb:10kb, memory=32mb:",
+		"String tag filter examples: foo, foo.*bar, mytag=foo.*bar")},
+	"tagignore": &variable{stringKind, "", "", helpText(
+		"Discard samples with tags in range or matched by regexp",
+		"Use name=value syntax to limit the matching to a specific tag.",
+		"Numeric tag filter examples: 1kb, 1kb:10kb, memory=32mb:",
+		"String tag filter examples: foo, foo.*bar, mytag=foo.*bar")},
+	"tagshow": &variable{stringKind, "", "", helpText(
+		"Only consider tags matching this regexp",
+		"Discard tags that do not match this regexp")},
+	"taghide": &variable{stringKind, "", "", helpText(
+		"Skip tags matching this regexp",
+		"Discard tags that match this regexp")},
+	// Heap profile options
+	"divide_by": &variable{floatKind, "1", "", helpText(
+		"Ratio to divide all samples before visualization",
+		"Divide all samples values by a constant, eg the number of processors or jobs.")},
+	"mean": &variable{boolKind, "f", "", helpText(
+		"Average sample value over first value (count)",
+		"For memory profiles, report average memory per allocation.",
+		"For time-based profiles, report average time per event.")},
+	"sample_index": &variable{stringKind, "", "", helpText(
+		"Sample value to report (0-based index or name)",
+		"Profiles contain multiple values per sample.",
+		"Use sample_index=i to select the ith value (starting at 0).")},
+	"normalize": &variable{boolKind, "f", "", helpText(
+		"Scales profile based on the base profile.")},
+
+	// Data sorting criteria
+	"flat": &variable{boolKind, "t", "cumulative", helpText("Sort entries based on own weight")},
+	"cum":  &variable{boolKind, "f", "cumulative", helpText("Sort entries based on cumulative weight")},
+
+	// Output granularity
+	"functions": &variable{boolKind, "t", "granularity", helpText(
+		"Aggregate at the function level.",
+		"Ignores the filename where the function was defined.")},
+	"filefunctions": &variable{boolKind, "t", "granularity", helpText(
+		"Aggregate at the function level.",
+		"Takes into account the filename where the function was defined.")},
+	"files": &variable{boolKind, "f", "granularity", "Aggregate at the file level."},
+	"lines": &variable{boolKind, "f", "granularity", "Aggregate at the source code line level."},
+	"addresses": &variable{boolKind, "f", "granularity", helpText(
+		"Aggregate at the address level.",
+		"Includes functions' addresses in the output.")},
+	"noinlines": &variable{boolKind, "f", "", helpText(
+		"Ignore inlines.",
+		"Attributes inlined functions to their first out-of-line caller.")},
+}
+
+func helpText(s ...string) string {
+	return strings.Join(s, "\n") + "\n"
+}
+
+// usage returns a string describing the pprof commands and variables.
+// if commandLine is set, the output reflect cli usage.
+func usage(commandLine bool) string {
+	var prefix string
+	if commandLine {
+		prefix = "-"
+	}
+	fmtHelp := func(c, d string) string {
+		return fmt.Sprintf("    %-16s %s", c, strings.SplitN(d, "\n", 2)[0])
+	}
+
+	var commands []string
+	for name, cmd := range pprofCommands {
+		commands = append(commands, fmtHelp(prefix+name, cmd.description))
+	}
+	sort.Strings(commands)
+
+	var help string
+	if commandLine {
+		help = "  Output formats (select at most one):\n"
+	} else {
+		help = "  Commands:\n"
+		commands = append(commands, fmtHelp("o/options", "List options and their current values"))
+		commands = append(commands, fmtHelp("quit/exit/^D", "Exit pprof"))
+	}
+
+	help = help + strings.Join(commands, "\n") + "\n\n" +
+		"  Options:\n"
+
+	// Print help for variables after sorting them.
+	// Collect radio variables by their group name to print them together.
+	radioOptions := make(map[string][]string)
+	var variables []string
+	for name, vr := range pprofVariables {
+		if vr.group != "" {
+			radioOptions[vr.group] = append(radioOptions[vr.group], name)
+			continue
+		}
+		variables = append(variables, fmtHelp(prefix+name, vr.help))
+	}
+	sort.Strings(variables)
+
+	help = help + strings.Join(variables, "\n") + "\n\n" +
+		"  Option groups (only set one per group):\n"
+
+	var radioStrings []string
+	for radio, ops := range radioOptions {
+		sort.Strings(ops)
+		s := []string{fmtHelp(radio, "")}
+		for _, op := range ops {
+			s = append(s, "  "+fmtHelp(prefix+op, pprofVariables[op].help))
+		}
+
+		radioStrings = append(radioStrings, strings.Join(s, "\n"))
+	}
+	sort.Strings(radioStrings)
+	return help + strings.Join(radioStrings, "\n")
+}
+
+func reportHelp(c string, cum, redirect bool) string {
+	h := []string{
+		c + " [n] [focus_regex]* [-ignore_regex]*",
+		"Include up to n samples",
+		"Include samples matching focus_regex, and exclude ignore_regex.",
+	}
+	if cum {
+		h[0] += " [-cum]"
+		h = append(h, "-cum sorts the output by cumulative weight")
+	}
+	if redirect {
+		h[0] += " >f"
+		h = append(h, "Optionally save the report on the file f")
+	}
+	return strings.Join(h, "\n")
+}
+
+func listHelp(c string, redirect bool) string {
+	h := []string{
+		c + "<func_regex|address> [-focus_regex]* [-ignore_regex]*",
+		"Include functions matching func_regex, or including the address specified.",
+		"Include samples matching focus_regex, and exclude ignore_regex.",
+	}
+	if redirect {
+		h[0] += " >f"
+		h = append(h, "Optionally save the report on the file f")
+	}
+	return strings.Join(h, "\n")
+}
+
+// browsers returns a list of commands to attempt for web visualization.
+func browsers() []string {
+	var cmds []string
+	if userBrowser := os.Getenv("BROWSER"); userBrowser != "" {
+		cmds = append(cmds, userBrowser)
+	}
+	switch runtime.GOOS {
+	case "darwin":
+		cmds = append(cmds, "/usr/bin/open")
+	case "windows":
+		cmds = append(cmds, "cmd /c start")
+	default:
+		// Commands opening browsers are prioritized over xdg-open, so browser()
+		// command can be used on linux to open the .svg file generated by the -web
+		// command (the .svg file includes embedded javascript so is best viewed in
+		// a browser).
+		cmds = append(cmds, []string{"chrome", "google-chrome", "chromium", "firefox", "sensible-browser"}...)
+		if os.Getenv("DISPLAY") != "" {
+			// xdg-open is only for use in a desktop environment.
+			cmds = append(cmds, "xdg-open")
+		}
+	}
+	return cmds
+}
+
+var kcachegrind = []string{"kcachegrind"}
+
+// awayFromTTY saves the output in a file if it would otherwise go to
+// the terminal screen. This is used to avoid dumping binary data on
+// the screen.
+func awayFromTTY(format string) PostProcessor {
+	return func(input io.Reader, output io.Writer, ui plugin.UI) error {
+		if output == os.Stdout && (ui.IsTerminal() || interactiveMode) {
+			tempFile, err := newTempFile("", "profile", "."+format)
+			if err != nil {
+				return err
+			}
+			ui.PrintErr("Generating report in ", tempFile.Name())
+			output = tempFile
+		}
+		_, err := io.Copy(output, input)
+		return err
+	}
+}
+
+func invokeDot(format string) PostProcessor {
+	return func(input io.Reader, output io.Writer, ui plugin.UI) error {
+		cmd := exec.Command("dot", "-T"+format)
+		cmd.Stdin, cmd.Stdout, cmd.Stderr = input, output, os.Stderr
+		if err := cmd.Run(); err != nil {
+			return fmt.Errorf("failed to execute dot. Is Graphviz installed? Error: %v", err)
+		}
+		return nil
+	}
+}
+
+// massageDotSVG invokes the dot tool to generate an SVG image and alters
+// the image to have panning capabilities when viewed in a browser.
+func massageDotSVG() PostProcessor {
+	generateSVG := invokeDot("svg")
+	return func(input io.Reader, output io.Writer, ui plugin.UI) error {
+		baseSVG := new(bytes.Buffer)
+		if err := generateSVG(input, baseSVG, ui); err != nil {
+			return err
+		}
+		_, err := output.Write([]byte(massageSVG(baseSVG.String())))
+		return err
+	}
+}
+
+func invokeVisualizer(suffix string, visualizers []string) PostProcessor {
+	return func(input io.Reader, output io.Writer, ui plugin.UI) error {
+		tempFile, err := newTempFile(os.TempDir(), "pprof", "."+suffix)
+		if err != nil {
+			return err
+		}
+		deferDeleteTempFile(tempFile.Name())
+		if _, err := io.Copy(tempFile, input); err != nil {
+			return err
+		}
+		tempFile.Close()
+		// Try visualizers until one is successful
+		for _, v := range visualizers {
+			// Separate command and arguments for exec.Command.
+			args := strings.Split(v, " ")
+			if len(args) == 0 {
+				continue
+			}
+			viewer := exec.Command(args[0], append(args[1:], tempFile.Name())...)
+			viewer.Stderr = os.Stderr
+			if err = viewer.Start(); err == nil {
+				// Wait for a second so that the visualizer has a chance to
+				// open the input file. This needs to be done even if we're
+				// waiting for the visualizer as it can be just a wrapper that
+				// spawns a browser tab and returns right away.
+				defer func(t <-chan time.Time) {
+					<-t
+				}(time.After(time.Second))
+				// On interactive mode, let the visualizer run in the background
+				// so other commands can be issued.
+				if !interactiveMode {
+					return viewer.Wait()
+				}
+				return nil
+			}
+		}
+		return err
+	}
+}
+
+// variables describe the configuration parameters recognized by pprof.
+type variables map[string]*variable
+
+// variable is a single configuration parameter.
+type variable struct {
+	kind  int    // How to interpret the value, must be one of the enums below.
+	value string // Effective value. Only values appropriate for the Kind should be set.
+	group string // boolKind variables with the same Group != "" cannot be set simultaneously.
+	help  string // Text describing the variable, in multiple lines separated by newline.
+}
+
+const (
+	// variable.kind must be one of these variables.
+	boolKind = iota
+	intKind
+	floatKind
+	stringKind
+)
+
+// set updates the value of a variable, checking that the value is
+// suitable for the variable Kind.
+func (vars variables) set(name, value string) error {
+	v := vars[name]
+	if v == nil {
+		return fmt.Errorf("no variable %s", name)
+	}
+	var err error
+	switch v.kind {
+	case boolKind:
+		var b bool
+		if b, err = stringToBool(value); err == nil {
+			if v.group != "" && !b {
+				err = fmt.Errorf("%q can only be set to true", name)
+			}
+		}
+	case intKind:
+		_, err = strconv.Atoi(value)
+	case floatKind:
+		_, err = strconv.ParseFloat(value, 64)
+	case stringKind:
+		// Remove quotes, particularly useful for empty values.
+		if len(value) > 1 && strings.HasPrefix(value, `"`) && strings.HasSuffix(value, `"`) {
+			value = value[1 : len(value)-1]
+		}
+	}
+	if err != nil {
+		return err
+	}
+	vars[name].value = value
+	if group := vars[name].group; group != "" {
+		for vname, vvar := range vars {
+			if vvar.group == group && vname != name {
+				vvar.value = "f"
+			}
+		}
+	}
+	return err
+}
+
+// boolValue returns the value of a boolean variable.
+func (v *variable) boolValue() bool {
+	b, err := stringToBool(v.value)
+	if err != nil {
+		panic("unexpected value " + v.value + " for bool ")
+	}
+	return b
+}
+
+// intValue returns the value of an intKind variable.
+func (v *variable) intValue() int {
+	i, err := strconv.Atoi(v.value)
+	if err != nil {
+		panic("unexpected value " + v.value + " for int ")
+	}
+	return i
+}
+
+// floatValue returns the value of a Float variable.
+func (v *variable) floatValue() float64 {
+	f, err := strconv.ParseFloat(v.value, 64)
+	if err != nil {
+		panic("unexpected value " + v.value + " for float ")
+	}
+	return f
+}
+
+// stringValue returns a canonical representation for a variable.
+func (v *variable) stringValue() string {
+	switch v.kind {
+	case boolKind:
+		return fmt.Sprint(v.boolValue())
+	case intKind:
+		return fmt.Sprint(v.intValue())
+	case floatKind:
+		return fmt.Sprint(v.floatValue())
+	}
+	return v.value
+}
+
+func stringToBool(s string) (bool, error) {
+	switch strings.ToLower(s) {
+	case "true", "t", "yes", "y", "1", "":
+		return true, nil
+	case "false", "f", "no", "n", "0":
+		return false, nil
+	default:
+		return false, fmt.Errorf(`illegal value "%s" for bool variable`, s)
+	}
+}
+
+// makeCopy returns a duplicate of a set of shell variables.
+func (vars variables) makeCopy() variables {
+	varscopy := make(variables, len(vars))
+	for n, v := range vars {
+		vcopy := *v
+		varscopy[n] = &vcopy
+	}
+	return varscopy
+}

vendor/github.com/google/pprof/internal/driver/driver.go

@@ -0,0 +1,330 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package driver implements the core pprof functionality. It can be
+// parameterized with a flag implementation, fetch and symbolize
+// mechanisms.
+package driver
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/internal/report"
+	"github.com/google/pprof/profile"
+)
+
+// PProf acquires a profile, and symbolizes it using a profile
+// manager. Then it generates a report formatted according to the
+// options selected through the flags package.
+func PProf(eo *plugin.Options) error {
+	// Remove any temporary files created during pprof processing.
+	defer cleanupTempFiles()
+
+	o := setDefaults(eo)
+
+	src, cmd, err := parseFlags(o)
+	if err != nil {
+		return err
+	}
+
+	p, err := fetchProfiles(src, o)
+	if err != nil {
+		return err
+	}
+
+	if cmd != nil {
+		return generateReport(p, cmd, pprofVariables, o)
+	}
+
+	if src.HTTPHostport != "" {
+		return serveWebInterface(src.HTTPHostport, p, o, src.HTTPDisableBrowser)
+	}
+	return interactive(p, o)
+}
+
+func generateRawReport(p *profile.Profile, cmd []string, vars variables, o *plugin.Options) (*command, *report.Report, error) {
+	p = p.Copy() // Prevent modification to the incoming profile.
+
+	// Identify units of numeric tags in profile.
+	numLabelUnits := identifyNumLabelUnits(p, o.UI)
+
+	// Get report output format
+	c := pprofCommands[cmd[0]]
+	if c == nil {
+		panic("unexpected nil command")
+	}
+
+	vars = applyCommandOverrides(cmd[0], c.format, vars)
+
+	// Delay focus after configuring report to get percentages on all samples.
+	relative := vars["relative_percentages"].boolValue()
+	if relative {
+		if err := applyFocus(p, numLabelUnits, vars, o.UI); err != nil {
+			return nil, nil, err
+		}
+	}
+	ropt, err := reportOptions(p, numLabelUnits, vars)
+	if err != nil {
+		return nil, nil, err
+	}
+	ropt.OutputFormat = c.format
+	if len(cmd) == 2 {
+		s, err := regexp.Compile(cmd[1])
+		if err != nil {
+			return nil, nil, fmt.Errorf("parsing argument regexp %s: %v", cmd[1], err)
+		}
+		ropt.Symbol = s
+	}
+
+	rpt := report.New(p, ropt)
+	if !relative {
+		if err := applyFocus(p, numLabelUnits, vars, o.UI); err != nil {
+			return nil, nil, err
+		}
+	}
+	if err := aggregate(p, vars); err != nil {
+		return nil, nil, err
+	}
+
+	return c, rpt, nil
+}
+
+func generateReport(p *profile.Profile, cmd []string, vars variables, o *plugin.Options) error {
+	c, rpt, err := generateRawReport(p, cmd, vars, o)
+	if err != nil {
+		return err
+	}
+
+	// Generate the report.
+	dst := new(bytes.Buffer)
+	if err := report.Generate(dst, rpt, o.Obj); err != nil {
+		return err
+	}
+	src := dst
+
+	// If necessary, perform any data post-processing.
+	if c.postProcess != nil {
+		dst = new(bytes.Buffer)
+		if err := c.postProcess(src, dst, o.UI); err != nil {
+			return err
+		}
+		src = dst
+	}
+
+	// If no output is specified, use default visualizer.
+	output := vars["output"].value
+	if output == "" {
+		if c.visualizer != nil {
+			return c.visualizer(src, os.Stdout, o.UI)
+		}
+		_, err := src.WriteTo(os.Stdout)
+		return err
+	}
+
+	// Output to specified file.
+	o.UI.PrintErr("Generating report in ", output)
+	out, err := o.Writer.Open(output)
+	if err != nil {
+		return err
+	}
+	if _, err := src.WriteTo(out); err != nil {
+		out.Close()
+		return err
+	}
+	return out.Close()
+}
+
+func applyCommandOverrides(cmd string, outputFormat int, v variables) variables {
+	// Some report types override the trim flag to false below. This is to make
+	// sure the default heuristics of excluding insignificant nodes and edges
+	// from the call graph do not apply. One example where it is important is
+	// annotated source or disassembly listing. Those reports run on a specific
+	// function (or functions), but the trimming is applied before the function
+	// data is selected. So, with trimming enabled, the report could end up
+	// showing no data if the specified function is "uninteresting" as far as the
+	// trimming is concerned.
+	trim := v["trim"].boolValue()
+
+	switch cmd {
+	case "disasm", "weblist":
+		trim = false
+		v.set("addresses", "t")
+		// Force the 'noinlines' mode so that source locations for a given address
+		// collapse and there is only one for the given address. Without this
+		// cumulative metrics would be double-counted when annotating the assembly.
+		// This is because the merge is done by address and in case of an inlined
+		// stack each of the inlined entries is a separate callgraph node.
+		v.set("noinlines", "t")
+	case "peek":
+		trim = false
+	case "list":
+		trim = false
+		v.set("lines", "t")
+		// Do not force 'noinlines' to be false so that specifying
+		// "-list foo -noinlines" is supported and works as expected.
+	case "text", "top", "topproto":
+		if v["nodecount"].intValue() == -1 {
+			v.set("nodecount", "0")
+		}
+	default:
+		if v["nodecount"].intValue() == -1 {
+			v.set("nodecount", "80")
+		}
+	}
+
+	switch outputFormat {
+	case report.Proto, report.Raw, report.Callgrind:
+		trim = false
+		v.set("addresses", "t")
+		v.set("noinlines", "f")
+	}
+
+	if !trim {
+		v.set("nodecount", "0")
+		v.set("nodefraction", "0")
+		v.set("edgefraction", "0")
+	}
+	return v
+}
+
+func aggregate(prof *profile.Profile, v variables) error {
+	var function, filename, linenumber, address bool
+	inlines := !v["noinlines"].boolValue()
+	switch {
+	case v["addresses"].boolValue():
+		if inlines {
+			return nil
+		}
+		function = true
+		filename = true
+		linenumber = true
+		address = true
+	case v["lines"].boolValue():
+		function = true
+		filename = true
+		linenumber = true
+	case v["files"].boolValue():
+		filename = true
+	case v["functions"].boolValue():
+		function = true
+	case v["filefunctions"].boolValue():
+		function = true
+		filename = true
+	default:
+		return fmt.Errorf("unexpected granularity")
+	}
+	return prof.Aggregate(inlines, function, filename, linenumber, address)
+}
+
+func reportOptions(p *profile.Profile, numLabelUnits map[string]string, vars variables) (*report.Options, error) {
+	si, mean := vars["sample_index"].value, vars["mean"].boolValue()
+	value, meanDiv, sample, err := sampleFormat(p, si, mean)
+	if err != nil {
+		return nil, err
+	}
+
+	stype := sample.Type
+	if mean {
+		stype = "mean_" + stype
+	}
+
+	if vars["divide_by"].floatValue() == 0 {
+		return nil, fmt.Errorf("zero divisor specified")
+	}
+
+	var filters []string
+	for _, k := range []string{"focus", "ignore", "hide", "show", "show_from", "tagfocus", "tagignore", "tagshow", "taghide"} {
+		v := vars[k].value
+		if v != "" {
+			filters = append(filters, k+"="+v)
+		}
+	}
+
+	ropt := &report.Options{
+		CumSort:      vars["cum"].boolValue(),
+		CallTree:     vars["call_tree"].boolValue(),
+		DropNegative: vars["drop_negative"].boolValue(),
+
+		CompactLabels: vars["compact_labels"].boolValue(),
+		Ratio:         1 / vars["divide_by"].floatValue(),
+
+		NodeCount:    vars["nodecount"].intValue(),
+		NodeFraction: vars["nodefraction"].floatValue(),
+		EdgeFraction: vars["edgefraction"].floatValue(),
+
+		ActiveFilters: filters,
+		NumLabelUnits: numLabelUnits,
+
+		SampleValue:       value,
+		SampleMeanDivisor: meanDiv,
+		SampleType:        stype,
+		SampleUnit:        sample.Unit,
+
+		OutputUnit: vars["unit"].value,
+
+		SourcePath: vars["source_path"].stringValue(),
+		TrimPath:   vars["trim_path"].stringValue(),
+	}
+
+	if len(p.Mapping) > 0 && p.Mapping[0].File != "" {
+		ropt.Title = filepath.Base(p.Mapping[0].File)
+	}
+
+	return ropt, nil
+}
+
+// identifyNumLabelUnits returns a map of numeric label keys to the units
+// associated with those keys.
+func identifyNumLabelUnits(p *profile.Profile, ui plugin.UI) map[string]string {
+	numLabelUnits, ignoredUnits := p.NumLabelUnits()
+
+	// Print errors for tags with multiple units associated with
+	// a single key.
+	for k, units := range ignoredUnits {
+		ui.PrintErr(fmt.Sprintf("For tag %s used unit %s, also encountered unit(s) %s", k, numLabelUnits[k], strings.Join(units, ", ")))
+	}
+	return numLabelUnits
+}
+
+type sampleValueFunc func([]int64) int64
+
+// sampleFormat returns a function to extract values out of a profile.Sample,
+// and the type/units of those values.
+func sampleFormat(p *profile.Profile, sampleIndex string, mean bool) (value, meanDiv sampleValueFunc, v *profile.ValueType, err error) {
+	if len(p.SampleType) == 0 {
+		return nil, nil, nil, fmt.Errorf("profile has no samples")
+	}
+	index, err := p.SampleIndexByName(sampleIndex)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+	value = valueExtractor(index)
+	if mean {
+		meanDiv = valueExtractor(0)
+	}
+	v = p.SampleType[index]
+	return
+}
+
+func valueExtractor(ix int) sampleValueFunc {
+	return func(v []int64) int64 {
+		return v[ix]
+	}
+}

vendor/github.com/google/pprof/internal/driver/driver_focus.go

@@ -0,0 +1,219 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/google/pprof/internal/measurement"
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/profile"
+)
+
+var tagFilterRangeRx = regexp.MustCompile("([+-]?[[:digit:]]+)([[:alpha:]]+)")
+
+// applyFocus filters samples based on the focus/ignore options
+func applyFocus(prof *profile.Profile, numLabelUnits map[string]string, v variables, ui plugin.UI) error {
+	focus, err := compileRegexOption("focus", v["focus"].value, nil)
+	ignore, err := compileRegexOption("ignore", v["ignore"].value, err)
+	hide, err := compileRegexOption("hide", v["hide"].value, err)
+	show, err := compileRegexOption("show", v["show"].value, err)
+	showfrom, err := compileRegexOption("show_from", v["show_from"].value, err)
+	tagfocus, err := compileTagFilter("tagfocus", v["tagfocus"].value, numLabelUnits, ui, err)
+	tagignore, err := compileTagFilter("tagignore", v["tagignore"].value, numLabelUnits, ui, err)
+	prunefrom, err := compileRegexOption("prune_from", v["prune_from"].value, err)
+	if err != nil {
+		return err
+	}
+
+	fm, im, hm, hnm := prof.FilterSamplesByName(focus, ignore, hide, show)
+	warnNoMatches(focus == nil || fm, "Focus", ui)
+	warnNoMatches(ignore == nil || im, "Ignore", ui)
+	warnNoMatches(hide == nil || hm, "Hide", ui)
+	warnNoMatches(show == nil || hnm, "Show", ui)
+
+	sfm := prof.ShowFrom(showfrom)
+	warnNoMatches(showfrom == nil || sfm, "ShowFrom", ui)
+
+	tfm, tim := prof.FilterSamplesByTag(tagfocus, tagignore)
+	warnNoMatches(tagfocus == nil || tfm, "TagFocus", ui)
+	warnNoMatches(tagignore == nil || tim, "TagIgnore", ui)
+
+	tagshow, err := compileRegexOption("tagshow", v["tagshow"].value, err)
+	taghide, err := compileRegexOption("taghide", v["taghide"].value, err)
+	tns, tnh := prof.FilterTagsByName(tagshow, taghide)
+	warnNoMatches(tagshow == nil || tns, "TagShow", ui)
+	warnNoMatches(tagignore == nil || tnh, "TagHide", ui)
+
+	if prunefrom != nil {
+		prof.PruneFrom(prunefrom)
+	}
+	return err
+}
+
+func compileRegexOption(name, value string, err error) (*regexp.Regexp, error) {
+	if value == "" || err != nil {
+		return nil, err
+	}
+	rx, err := regexp.Compile(value)
+	if err != nil {
+		return nil, fmt.Errorf("parsing %s regexp: %v", name, err)
+	}
+	return rx, nil
+}
+
+func compileTagFilter(name, value string, numLabelUnits map[string]string, ui plugin.UI, err error) (func(*profile.Sample) bool, error) {
+	if value == "" || err != nil {
+		return nil, err
+	}
+
+	tagValuePair := strings.SplitN(value, "=", 2)
+	var wantKey string
+	if len(tagValuePair) == 2 {
+		wantKey = tagValuePair[0]
+		value = tagValuePair[1]
+	}
+
+	if numFilter := parseTagFilterRange(value); numFilter != nil {
+		ui.PrintErr(name, ":Interpreted '", value, "' as range, not regexp")
+		labelFilter := func(vals []int64, unit string) bool {
+			for _, val := range vals {
+				if numFilter(val, unit) {
+					return true
+				}
+			}
+			return false
+		}
+		numLabelUnit := func(key string) string {
+			return numLabelUnits[key]
+		}
+		if wantKey == "" {
+			return func(s *profile.Sample) bool {
+				for key, vals := range s.NumLabel {
+					if labelFilter(vals, numLabelUnit(key)) {
+						return true
+					}
+				}
+				return false
+			}, nil
+		}
+		return func(s *profile.Sample) bool {
+			if vals, ok := s.NumLabel[wantKey]; ok {
+				return labelFilter(vals, numLabelUnit(wantKey))
+			}
+			return false
+		}, nil
+	}
+
+	var rfx []*regexp.Regexp
+	for _, tagf := range strings.Split(value, ",") {
+		fx, err := regexp.Compile(tagf)
+		if err != nil {
+			return nil, fmt.Errorf("parsing %s regexp: %v", name, err)
+		}
+		rfx = append(rfx, fx)
+	}
+	if wantKey == "" {
+		return func(s *profile.Sample) bool {
+		matchedrx:
+			for _, rx := range rfx {
+				for key, vals := range s.Label {
+					for _, val := range vals {
+						// TODO: Match against val, not key:val in future
+						if rx.MatchString(key + ":" + val) {
+							continue matchedrx
+						}
+					}
+				}
+				return false
+			}
+			return true
+		}, nil
+	}
+	return func(s *profile.Sample) bool {
+		if vals, ok := s.Label[wantKey]; ok {
+			for _, rx := range rfx {
+				for _, val := range vals {
+					if rx.MatchString(val) {
+						return true
+					}
+				}
+			}
+		}
+		return false
+	}, nil
+}
+
+// parseTagFilterRange returns a function to checks if a value is
+// contained on the range described by a string. It can recognize
+// strings of the form:
+// "32kb" -- matches values == 32kb
+// ":64kb" -- matches values <= 64kb
+// "4mb:" -- matches values >= 4mb
+// "12kb:64mb" -- matches values between 12kb and 64mb (both included).
+func parseTagFilterRange(filter string) func(int64, string) bool {
+	ranges := tagFilterRangeRx.FindAllStringSubmatch(filter, 2)
+	if len(ranges) == 0 {
+		return nil // No ranges were identified
+	}
+	v, err := strconv.ParseInt(ranges[0][1], 10, 64)
+	if err != nil {
+		panic(fmt.Errorf("failed to parse int %s: %v", ranges[0][1], err))
+	}
+	scaledValue, unit := measurement.Scale(v, ranges[0][2], ranges[0][2])
+	if len(ranges) == 1 {
+		switch match := ranges[0][0]; filter {
+		case match:
+			return func(v int64, u string) bool {
+				sv, su := measurement.Scale(v, u, unit)
+				return su == unit && sv == scaledValue
+			}
+		case match + ":":
+			return func(v int64, u string) bool {
+				sv, su := measurement.Scale(v, u, unit)
+				return su == unit && sv >= scaledValue
+			}
+		case ":" + match:
+			return func(v int64, u string) bool {
+				sv, su := measurement.Scale(v, u, unit)
+				return su == unit && sv <= scaledValue
+			}
+		}
+		return nil
+	}
+	if filter != ranges[0][0]+":"+ranges[1][0] {
+		return nil
+	}
+	if v, err = strconv.ParseInt(ranges[1][1], 10, 64); err != nil {
+		panic(fmt.Errorf("failed to parse int %s: %v", ranges[1][1], err))
+	}
+	scaledValue2, unit2 := measurement.Scale(v, ranges[1][2], unit)
+	if unit != unit2 {
+		return nil
+	}
+	return func(v int64, u string) bool {
+		sv, su := measurement.Scale(v, u, unit)
+		return su == unit && sv >= scaledValue && sv <= scaledValue2
+	}
+}
+
+func warnNoMatches(match bool, option string, ui plugin.UI) {
+	if !match {
+		ui.PrintErr(option + " expression matched no samples")
+	}
+}

vendor/github.com/google/pprof/internal/driver/fetch.go

@@ -0,0 +1,587 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/google/pprof/internal/measurement"
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/profile"
+)
+
+// fetchProfiles fetches and symbolizes the profiles specified by s.
+// It will merge all the profiles it is able to retrieve, even if
+// there are some failures. It will return an error if it is unable to
+// fetch any profiles.
+func fetchProfiles(s *source, o *plugin.Options) (*profile.Profile, error) {
+	sources := make([]profileSource, 0, len(s.Sources))
+	for _, src := range s.Sources {
+		sources = append(sources, profileSource{
+			addr:   src,
+			source: s,
+		})
+	}
+
+	bases := make([]profileSource, 0, len(s.Base))
+	for _, src := range s.Base {
+		bases = append(bases, profileSource{
+			addr:   src,
+			source: s,
+		})
+	}
+
+	p, pbase, m, mbase, save, err := grabSourcesAndBases(sources, bases, o.Fetch, o.Obj, o.UI, o.HTTPTransport)
+	if err != nil {
+		return nil, err
+	}
+
+	if pbase != nil {
+		if s.DiffBase {
+			pbase.SetLabel("pprof::base", []string{"true"})
+		}
+		if s.Normalize {
+			err := p.Normalize(pbase)
+			if err != nil {
+				return nil, err
+			}
+		}
+		pbase.Scale(-1)
+		p, m, err = combineProfiles([]*profile.Profile{p, pbase}, []plugin.MappingSources{m, mbase})
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// Symbolize the merged profile.
+	if err := o.Sym.Symbolize(s.Symbolize, m, p); err != nil {
+		return nil, err
+	}
+	p.RemoveUninteresting()
+	unsourceMappings(p)
+
+	if s.Comment != "" {
+		p.Comments = append(p.Comments, s.Comment)
+	}
+
+	// Save a copy of the merged profile if there is at least one remote source.
+	if save {
+		dir, err := setTmpDir(o.UI)
+		if err != nil {
+			return nil, err
+		}
+
+		prefix := "pprof."
+		if len(p.Mapping) > 0 && p.Mapping[0].File != "" {
+			prefix += filepath.Base(p.Mapping[0].File) + "."
+		}
+		for _, s := range p.SampleType {
+			prefix += s.Type + "."
+		}
+
+		tempFile, err := newTempFile(dir, prefix, ".pb.gz")
+		if err == nil {
+			if err = p.Write(tempFile); err == nil {
+				o.UI.PrintErr("Saved profile in ", tempFile.Name())
+			}
+		}
+		if err != nil {
+			o.UI.PrintErr("Could not save profile: ", err)
+		}
+	}
+
+	if err := p.CheckValid(); err != nil {
+		return nil, err
+	}
+
+	return p, nil
+}
+
+func grabSourcesAndBases(sources, bases []profileSource, fetch plugin.Fetcher, obj plugin.ObjTool, ui plugin.UI, tr http.RoundTripper) (*profile.Profile, *profile.Profile, plugin.MappingSources, plugin.MappingSources, bool, error) {
+	wg := sync.WaitGroup{}
+	wg.Add(2)
+	var psrc, pbase *profile.Profile
+	var msrc, mbase plugin.MappingSources
+	var savesrc, savebase bool
+	var errsrc, errbase error
+	var countsrc, countbase int
+	go func() {
+		defer wg.Done()
+		psrc, msrc, savesrc, countsrc, errsrc = chunkedGrab(sources, fetch, obj, ui, tr)
+	}()
+	go func() {
+		defer wg.Done()
+		pbase, mbase, savebase, countbase, errbase = chunkedGrab(bases, fetch, obj, ui, tr)
+	}()
+	wg.Wait()
+	save := savesrc || savebase
+
+	if errsrc != nil {
+		return nil, nil, nil, nil, false, fmt.Errorf("problem fetching source profiles: %v", errsrc)
+	}
+	if errbase != nil {
+		return nil, nil, nil, nil, false, fmt.Errorf("problem fetching base profiles: %v,", errbase)
+	}
+	if countsrc == 0 {
+		return nil, nil, nil, nil, false, fmt.Errorf("failed to fetch any source profiles")
+	}
+	if countbase == 0 && len(bases) > 0 {
+		return nil, nil, nil, nil, false, fmt.Errorf("failed to fetch any base profiles")
+	}
+	if want, got := len(sources), countsrc; want != got {
+		ui.PrintErr(fmt.Sprintf("Fetched %d source profiles out of %d", got, want))
+	}
+	if want, got := len(bases), countbase; want != got {
+		ui.PrintErr(fmt.Sprintf("Fetched %d base profiles out of %d", got, want))
+	}
+
+	return psrc, pbase, msrc, mbase, save, nil
+}
+
+// chunkedGrab fetches the profiles described in source and merges them into
+// a single profile. It fetches a chunk of profiles concurrently, with a maximum
+// chunk size to limit its memory usage.
+func chunkedGrab(sources []profileSource, fetch plugin.Fetcher, obj plugin.ObjTool, ui plugin.UI, tr http.RoundTripper) (*profile.Profile, plugin.MappingSources, bool, int, error) {
+	const chunkSize = 64
+
+	var p *profile.Profile
+	var msrc plugin.MappingSources
+	var save bool
+	var count int
+
+	for start := 0; start < len(sources); start += chunkSize {
+		end := start + chunkSize
+		if end > len(sources) {
+			end = len(sources)
+		}
+		chunkP, chunkMsrc, chunkSave, chunkCount, chunkErr := concurrentGrab(sources[start:end], fetch, obj, ui, tr)
+		switch {
+		case chunkErr != nil:
+			return nil, nil, false, 0, chunkErr
+		case chunkP == nil:
+			continue
+		case p == nil:
+			p, msrc, save, count = chunkP, chunkMsrc, chunkSave, chunkCount
+		default:
+			p, msrc, chunkErr = combineProfiles([]*profile.Profile{p, chunkP}, []plugin.MappingSources{msrc, chunkMsrc})
+			if chunkErr != nil {
+				return nil, nil, false, 0, chunkErr
+			}
+			if chunkSave {
+				save = true
+			}
+			count += chunkCount
+		}
+	}
+
+	return p, msrc, save, count, nil
+}
+
+// concurrentGrab fetches multiple profiles concurrently
+func concurrentGrab(sources []profileSource, fetch plugin.Fetcher, obj plugin.ObjTool, ui plugin.UI, tr http.RoundTripper) (*profile.Profile, plugin.MappingSources, bool, int, error) {
+	wg := sync.WaitGroup{}
+	wg.Add(len(sources))
+	for i := range sources {
+		go func(s *profileSource) {
+			defer wg.Done()
+			s.p, s.msrc, s.remote, s.err = grabProfile(s.source, s.addr, fetch, obj, ui, tr)
+		}(&sources[i])
+	}
+	wg.Wait()
+
+	var save bool
+	profiles := make([]*profile.Profile, 0, len(sources))
+	msrcs := make([]plugin.MappingSources, 0, len(sources))
+	for i := range sources {
+		s := &sources[i]
+		if err := s.err; err != nil {
+			ui.PrintErr(s.addr + ": " + err.Error())
+			continue
+		}
+		save = save || s.remote
+		profiles = append(profiles, s.p)
+		msrcs = append(msrcs, s.msrc)
+		*s = profileSource{}
+	}
+
+	if len(profiles) == 0 {
+		return nil, nil, false, 0, nil
+	}
+
+	p, msrc, err := combineProfiles(profiles, msrcs)
+	if err != nil {
+		return nil, nil, false, 0, err
+	}
+	return p, msrc, save, len(profiles), nil
+}
+
+func combineProfiles(profiles []*profile.Profile, msrcs []plugin.MappingSources) (*profile.Profile, plugin.MappingSources, error) {
+	// Merge profiles.
+	if err := measurement.ScaleProfiles(profiles); err != nil {
+		return nil, nil, err
+	}
+
+	p, err := profile.Merge(profiles)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// Combine mapping sources.
+	msrc := make(plugin.MappingSources)
+	for _, ms := range msrcs {
+		for m, s := range ms {
+			msrc[m] = append(msrc[m], s...)
+		}
+	}
+	return p, msrc, nil
+}
+
+type profileSource struct {
+	addr   string
+	source *source
+
+	p      *profile.Profile
+	msrc   plugin.MappingSources
+	remote bool
+	err    error
+}
+
+func homeEnv() string {
+	switch runtime.GOOS {
+	case "windows":
+		return "USERPROFILE"
+	case "plan9":
+		return "home"
+	default:
+		return "HOME"
+	}
+}
+
+// setTmpDir prepares the directory to use to save profiles retrieved
+// remotely. It is selected from PPROF_TMPDIR, defaults to $HOME/pprof, and, if
+// $HOME is not set, falls back to os.TempDir().
+func setTmpDir(ui plugin.UI) (string, error) {
+	var dirs []string
+	if profileDir := os.Getenv("PPROF_TMPDIR"); profileDir != "" {
+		dirs = append(dirs, profileDir)
+	}
+	if homeDir := os.Getenv(homeEnv()); homeDir != "" {
+		dirs = append(dirs, filepath.Join(homeDir, "pprof"))
+	}
+	dirs = append(dirs, os.TempDir())
+	for _, tmpDir := range dirs {
+		if err := os.MkdirAll(tmpDir, 0755); err != nil {
+			ui.PrintErr("Could not use temp dir ", tmpDir, ": ", err.Error())
+			continue
+		}
+		return tmpDir, nil
+	}
+	return "", fmt.Errorf("failed to identify temp dir")
+}
+
+const testSourceAddress = "pproftest.local"
+
+// grabProfile fetches a profile. Returns the profile, sources for the
+// profile mappings, a bool indicating if the profile was fetched
+// remotely, and an error.
+func grabProfile(s *source, source string, fetcher plugin.Fetcher, obj plugin.ObjTool, ui plugin.UI, tr http.RoundTripper) (p *profile.Profile, msrc plugin.MappingSources, remote bool, err error) {
+	var src string
+	duration, timeout := time.Duration(s.Seconds)*time.Second, time.Duration(s.Timeout)*time.Second
+	if fetcher != nil {
+		p, src, err = fetcher.Fetch(source, duration, timeout)
+		if err != nil {
+			return
+		}
+	}
+	if err != nil || p == nil {
+		// Fetch the profile over HTTP or from a file.
+		p, src, err = fetch(source, duration, timeout, ui, tr)
+		if err != nil {
+			return
+		}
+	}
+
+	if err = p.CheckValid(); err != nil {
+		return
+	}
+
+	// Update the binary locations from command line and paths.
+	locateBinaries(p, s, obj, ui)
+
+	// Collect the source URL for all mappings.
+	if src != "" {
+		msrc = collectMappingSources(p, src)
+		remote = true
+		if strings.HasPrefix(src, "http://"+testSourceAddress) {
+			// Treat test inputs as local to avoid saving
+			// testcase profiles during driver testing.
+			remote = false
+		}
+	}
+	return
+}
+
+// collectMappingSources saves the mapping sources of a profile.
+func collectMappingSources(p *profile.Profile, source string) plugin.MappingSources {
+	ms := plugin.MappingSources{}
+	for _, m := range p.Mapping {
+		src := struct {
+			Source string
+			Start  uint64
+		}{
+			source, m.Start,
+		}
+		key := m.BuildID
+		if key == "" {
+			key = m.File
+		}
+		if key == "" {
+			// If there is no build id or source file, use the source as the
+			// mapping file. This will enable remote symbolization for this
+			// mapping, in particular for Go profiles on the legacy format.
+			// The source is reset back to empty string by unsourceMapping
+			// which is called after symbolization is finished.
+			m.File = source
+			key = source
+		}
+		ms[key] = append(ms[key], src)
+	}
+	return ms
+}
+
+// unsourceMappings iterates over the mappings in a profile and replaces file
+// set to the remote source URL by collectMappingSources back to empty string.
+func unsourceMappings(p *profile.Profile) {
+	for _, m := range p.Mapping {
+		if m.BuildID == "" {
+			if u, err := url.Parse(m.File); err == nil && u.IsAbs() {
+				m.File = ""
+			}
+		}
+	}
+}
+
+// locateBinaries searches for binary files listed in the profile and, if found,
+// updates the profile accordingly.
+func locateBinaries(p *profile.Profile, s *source, obj plugin.ObjTool, ui plugin.UI) {
+	// Construct search path to examine
+	searchPath := os.Getenv("PPROF_BINARY_PATH")
+	if searchPath == "" {
+		// Use $HOME/pprof/binaries as default directory for local symbolization binaries
+		searchPath = filepath.Join(os.Getenv(homeEnv()), "pprof", "binaries")
+	}
+mapping:
+	for _, m := range p.Mapping {
+		var baseName string
+		if m.File != "" {
+			baseName = filepath.Base(m.File)
+		}
+
+		for _, path := range filepath.SplitList(searchPath) {
+			var fileNames []string
+			if m.BuildID != "" {
+				fileNames = []string{filepath.Join(path, m.BuildID, baseName)}
+				if matches, err := filepath.Glob(filepath.Join(path, m.BuildID, "*")); err == nil {
+					fileNames = append(fileNames, matches...)
+				}
+				fileNames = append(fileNames, filepath.Join(path, m.File, m.BuildID)) // perf path format
+			}
+			if m.File != "" {
+				// Try both the basename and the full path, to support the same directory
+				// structure as the perf symfs option.
+				if baseName != "" {
+					fileNames = append(fileNames, filepath.Join(path, baseName))
+				}
+				fileNames = append(fileNames, filepath.Join(path, m.File))
+			}
+			for _, name := range fileNames {
+				if f, err := obj.Open(name, m.Start, m.Limit, m.Offset); err == nil {
+					defer f.Close()
+					fileBuildID := f.BuildID()
+					if m.BuildID != "" && m.BuildID != fileBuildID {
+						ui.PrintErr("Ignoring local file " + name + ": build-id mismatch (" + m.BuildID + " != " + fileBuildID + ")")
+					} else {
+						m.File = name
+						continue mapping
+					}
+				}
+			}
+		}
+	}
+	if len(p.Mapping) == 0 {
+		// If there are no mappings, add a fake mapping to attempt symbolization.
+		// This is useful for some profiles generated by the golang runtime, which
+		// do not include any mappings. Symbolization with a fake mapping will only
+		// be successful against a non-PIE binary.
+		m := &profile.Mapping{ID: 1}
+		p.Mapping = []*profile.Mapping{m}
+		for _, l := range p.Location {
+			l.Mapping = m
+		}
+	}
+	// Replace executable filename/buildID with the overrides from source.
+	// Assumes the executable is the first Mapping entry.
+	if execName, buildID := s.ExecName, s.BuildID; execName != "" || buildID != "" {
+		m := p.Mapping[0]
+		if execName != "" {
+			m.File = execName
+		}
+		if buildID != "" {
+			m.BuildID = buildID
+		}
+	}
+}
+
+// fetch fetches a profile from source, within the timeout specified,
+// producing messages through the ui. It returns the profile and the
+// url of the actual source of the profile for remote profiles.
+func fetch(source string, duration, timeout time.Duration, ui plugin.UI, tr http.RoundTripper) (p *profile.Profile, src string, err error) {
+	var f io.ReadCloser
+
+	if sourceURL, timeout := adjustURL(source, duration, timeout); sourceURL != "" {
+		ui.Print("Fetching profile over HTTP from " + sourceURL)
+		if duration > 0 {
+			ui.Print(fmt.Sprintf("Please wait... (%v)", duration))
+		}
+		f, err = fetchURL(sourceURL, timeout, tr)
+		src = sourceURL
+	} else if isPerfFile(source) {
+		f, err = convertPerfData(source, ui)
+	} else {
+		f, err = os.Open(source)
+	}
+	if err == nil {
+		defer f.Close()
+		p, err = profile.Parse(f)
+	}
+	return
+}
+
+// fetchURL fetches a profile from a URL using HTTP.
+func fetchURL(source string, timeout time.Duration, tr http.RoundTripper) (io.ReadCloser, error) {
+	client := &http.Client{
+		Transport: tr,
+		Timeout:   timeout + 5*time.Second,
+	}
+	resp, err := client.Get(source)
+	if err != nil {
+		return nil, fmt.Errorf("http fetch: %v", err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		defer resp.Body.Close()
+		return nil, statusCodeError(resp)
+	}
+
+	return resp.Body, nil
+}
+
+func statusCodeError(resp *http.Response) error {
+	if resp.Header.Get("X-Go-Pprof") != "" && strings.Contains(resp.Header.Get("Content-Type"), "text/plain") {
+		// error is from pprof endpoint
+		if body, err := ioutil.ReadAll(resp.Body); err == nil {
+			return fmt.Errorf("server response: %s - %s", resp.Status, body)
+		}
+	}
+	return fmt.Errorf("server response: %s", resp.Status)
+}
+
+// isPerfFile checks if a file is in perf.data format. It also returns false
+// if it encounters an error during the check.
+func isPerfFile(path string) bool {
+	sourceFile, openErr := os.Open(path)
+	if openErr != nil {
+		return false
+	}
+	defer sourceFile.Close()
+
+	// If the file is the output of a perf record command, it should begin
+	// with the string PERFILE2.
+	perfHeader := []byte("PERFILE2")
+	actualHeader := make([]byte, len(perfHeader))
+	if _, readErr := sourceFile.Read(actualHeader); readErr != nil {
+		return false
+	}
+	return bytes.Equal(actualHeader, perfHeader)
+}
+
+// convertPerfData converts the file at path which should be in perf.data format
+// using the perf_to_profile tool and returns the file containing the
+// profile.proto formatted data.
+func convertPerfData(perfPath string, ui plugin.UI) (*os.File, error) {
+	ui.Print(fmt.Sprintf(
+		"Converting %s to a profile.proto... (May take a few minutes)",
+		perfPath))
+	profile, err := newTempFile(os.TempDir(), "pprof_", ".pb.gz")
+	if err != nil {
+		return nil, err
+	}
+	deferDeleteTempFile(profile.Name())
+	cmd := exec.Command("perf_to_profile", "-i", perfPath, "-o", profile.Name(), "-f")
+	cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr
+	if err := cmd.Run(); err != nil {
+		profile.Close()
+		return nil, fmt.Errorf("failed to convert perf.data file. Try github.com/google/perf_data_converter: %v", err)
+	}
+	return profile, nil
+}
+
+// adjustURL validates if a profile source is a URL and returns an
+// cleaned up URL and the timeout to use for retrieval over HTTP.
+// If the source cannot be recognized as a URL it returns an empty string.
+func adjustURL(source string, duration, timeout time.Duration) (string, time.Duration) {
+	u, err := url.Parse(source)
+	if err != nil || (u.Host == "" && u.Scheme != "" && u.Scheme != "file") {
+		// Try adding http:// to catch sources of the form hostname:port/path.
+		// url.Parse treats "hostname" as the scheme.
+		u, err = url.Parse("http://" + source)
+	}
+	if err != nil || u.Host == "" {
+		return "", 0
+	}
+
+	// Apply duration/timeout overrides to URL.
+	values := u.Query()
+	if duration > 0 {
+		values.Set("seconds", fmt.Sprint(int(duration.Seconds())))
+	} else {
+		if urlSeconds := values.Get("seconds"); urlSeconds != "" {
+			if us, err := strconv.ParseInt(urlSeconds, 10, 32); err == nil {
+				duration = time.Duration(us) * time.Second
+			}
+		}
+	}
+	if timeout <= 0 {
+		if duration > 0 {
+			timeout = duration + duration/2
+		} else {
+			timeout = 60 * time.Second
+		}
+	}
+	u.RawQuery = values.Encode()
+	return u.String(), timeout
+}

vendor/github.com/google/pprof/internal/driver/fetch_test.go

@@ -0,0 +1,758 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/pem"
+	"fmt"
+	"io/ioutil"
+	"math/big"
+	"net"
+	"net/http"
+	"os"
+	"path/filepath"
+	"reflect"
+	"regexp"
+	"runtime"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/google/pprof/internal/binutils"
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/internal/proftest"
+	"github.com/google/pprof/internal/symbolizer"
+	"github.com/google/pprof/internal/transport"
+	"github.com/google/pprof/profile"
+)
+
+func TestSymbolizationPath(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("test assumes Unix paths")
+	}
+
+	// Save environment variables to restore after test
+	saveHome := os.Getenv(homeEnv())
+	savePath := os.Getenv("PPROF_BINARY_PATH")
+
+	tempdir, err := ioutil.TempDir("", "home")
+	if err != nil {
+		t.Fatal("creating temp dir: ", err)
+	}
+	defer os.RemoveAll(tempdir)
+	os.MkdirAll(filepath.Join(tempdir, "pprof", "binaries", "abcde10001"), 0700)
+	os.Create(filepath.Join(tempdir, "pprof", "binaries", "abcde10001", "binary"))
+
+	obj := testObj{tempdir}
+	os.Setenv(homeEnv(), tempdir)
+	for _, tc := range []struct {
+		env, file, buildID, want string
+		msgCount                 int
+	}{
+		{"", "/usr/bin/binary", "", "/usr/bin/binary", 0},
+		{"", "/usr/bin/binary", "fedcb10000", "/usr/bin/binary", 0},
+		{"/usr", "/bin/binary", "", "/usr/bin/binary", 0},
+		{"", "/prod/path/binary", "abcde10001", filepath.Join(tempdir, "pprof/binaries/abcde10001/binary"), 0},
+		{"/alternate/architecture", "/usr/bin/binary", "", "/alternate/architecture/binary", 0},
+		{"/alternate/architecture", "/usr/bin/binary", "abcde10001", "/alternate/architecture/binary", 0},
+		{"/nowhere:/alternate/architecture", "/usr/bin/binary", "fedcb10000", "/usr/bin/binary", 1},
+		{"/nowhere:/alternate/architecture", "/usr/bin/binary", "abcde10002", "/usr/bin/binary", 1},
+	} {
+		os.Setenv("PPROF_BINARY_PATH", tc.env)
+		p := &profile.Profile{
+			Mapping: []*profile.Mapping{
+				{
+					File:    tc.file,
+					BuildID: tc.buildID,
+				},
+			},
+		}
+		s := &source{}
+		locateBinaries(p, s, obj, &proftest.TestUI{T: t, Ignore: tc.msgCount})
+		if file := p.Mapping[0].File; file != tc.want {
+			t.Errorf("%s:%s:%s, want %s, got %s", tc.env, tc.file, tc.buildID, tc.want, file)
+		}
+	}
+	os.Setenv(homeEnv(), saveHome)
+	os.Setenv("PPROF_BINARY_PATH", savePath)
+}
+
+func TestCollectMappingSources(t *testing.T) {
+	const startAddress uint64 = 0x40000
+	const url = "http://example.com"
+	for _, tc := range []struct {
+		file, buildID string
+		want          plugin.MappingSources
+	}{
+		{"/usr/bin/binary", "buildId", mappingSources("buildId", url, startAddress)},
+		{"/usr/bin/binary", "", mappingSources("/usr/bin/binary", url, startAddress)},
+		{"", "", mappingSources(url, url, startAddress)},
+	} {
+		p := &profile.Profile{
+			Mapping: []*profile.Mapping{
+				{
+					File:    tc.file,
+					BuildID: tc.buildID,
+					Start:   startAddress,
+				},
+			},
+		}
+		got := collectMappingSources(p, url)
+		if !reflect.DeepEqual(got, tc.want) {
+			t.Errorf("%s:%s, want %v, got %v", tc.file, tc.buildID, tc.want, got)
+		}
+	}
+}
+
+func TestUnsourceMappings(t *testing.T) {
+	for _, tc := range []struct {
+		file, buildID, want string
+	}{
+		{"/usr/bin/binary", "buildId", "/usr/bin/binary"},
+		{"http://example.com", "", ""},
+	} {
+		p := &profile.Profile{
+			Mapping: []*profile.Mapping{
+				{
+					File:    tc.file,
+					BuildID: tc.buildID,
+				},
+			},
+		}
+		unsourceMappings(p)
+		if got := p.Mapping[0].File; got != tc.want {
+			t.Errorf("%s:%s, want %s, got %s", tc.file, tc.buildID, tc.want, got)
+		}
+	}
+}
+
+type testObj struct {
+	home string
+}
+
+func (o testObj) Open(file string, start, limit, offset uint64) (plugin.ObjFile, error) {
+	switch file {
+	case "/alternate/architecture/binary":
+		return testFile{file, "abcde10001"}, nil
+	case "/usr/bin/binary":
+		return testFile{file, "fedcb10000"}, nil
+	case filepath.Join(o.home, "pprof/binaries/abcde10001/binary"):
+		return testFile{file, "abcde10001"}, nil
+	}
+	return nil, fmt.Errorf("not found: %s", file)
+}
+func (testObj) Demangler(_ string) func(names []string) (map[string]string, error) {
+	return func(names []string) (map[string]string, error) { return nil, nil }
+}
+func (testObj) Disasm(file string, start, end uint64) ([]plugin.Inst, error) { return nil, nil }
+
+type testFile struct{ name, buildID string }
+
+func (f testFile) Name() string                                               { return f.name }
+func (testFile) Base() uint64                                                 { return 0 }
+func (f testFile) BuildID() string                                            { return f.buildID }
+func (testFile) SourceLine(addr uint64) ([]plugin.Frame, error)               { return nil, nil }
+func (testFile) Symbols(r *regexp.Regexp, addr uint64) ([]*plugin.Sym, error) { return nil, nil }
+func (testFile) Close() error                                                 { return nil }
+
+func TestFetch(t *testing.T) {
+	const path = "testdata/"
+	type testcase struct {
+		source, execName string
+	}
+
+	for _, tc := range []testcase{
+		{path + "go.crc32.cpu", ""},
+		{path + "go.nomappings.crash", "/bin/gotest.exe"},
+		{"http://localhost/profile?file=cppbench.cpu", ""},
+	} {
+		p, _, _, err := grabProfile(&source{ExecName: tc.execName}, tc.source, nil, testObj{}, &proftest.TestUI{T: t}, &httpTransport{})
+		if err != nil {
+			t.Fatalf("%s: %s", tc.source, err)
+		}
+		if len(p.Sample) == 0 {
+			t.Errorf("%s: want non-zero samples", tc.source)
+		}
+		if e := tc.execName; e != "" {
+			switch {
+			case len(p.Mapping) == 0 || p.Mapping[0] == nil:
+				t.Errorf("%s: want mapping[0].execName == %s, got no mappings", tc.source, e)
+			case p.Mapping[0].File != e:
+				t.Errorf("%s: want mapping[0].execName == %s, got %s", tc.source, e, p.Mapping[0].File)
+			}
+		}
+	}
+}
+
+func TestFetchWithBase(t *testing.T) {
+	baseVars := pprofVariables
+	defer func() { pprofVariables = baseVars }()
+
+	type WantSample struct {
+		values []int64
+		labels map[string][]string
+	}
+
+	const path = "testdata/"
+	type testcase struct {
+		desc         string
+		sources      []string
+		bases        []string
+		diffBases    []string
+		normalize    bool
+		wantSamples  []WantSample
+		wantErrorMsg string
+	}
+
+	testcases := []testcase{
+		{
+			"not normalized base is same as source",
+			[]string{path + "cppbench.contention"},
+			[]string{path + "cppbench.contention"},
+			nil,
+			false,
+			nil,
+			"",
+		},
+		{
+			"not normalized base is same as source",
+			[]string{path + "cppbench.contention"},
+			[]string{path + "cppbench.contention"},
+			nil,
+			false,
+			nil,
+			"",
+		},
+		{
+			"not normalized single source, multiple base (all profiles same)",
+			[]string{path + "cppbench.contention"},
+			[]string{path + "cppbench.contention", path + "cppbench.contention"},
+			nil,
+			false,
+			[]WantSample{
+				{
+					values: []int64{-2700, -608881724},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{-100, -23992},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{-200, -179943},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{-100, -17778444},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{-100, -75976},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{-300, -63568134},
+					labels: map[string][]string{},
+				},
+			},
+			"",
+		},
+		{
+			"not normalized, different base and source",
+			[]string{path + "cppbench.contention"},
+			[]string{path + "cppbench.small.contention"},
+			nil,
+			false,
+			[]WantSample{
+				{
+					values: []int64{1700, 608878600},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{100, 23992},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{200, 179943},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{100, 17778444},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{100, 75976},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{300, 63568134},
+					labels: map[string][]string{},
+				},
+			},
+			"",
+		},
+		{
+			"normalized base is same as source",
+			[]string{path + "cppbench.contention"},
+			[]string{path + "cppbench.contention"},
+			nil,
+			true,
+			nil,
+			"",
+		},
+		{
+			"normalized single source, multiple base (all profiles same)",
+			[]string{path + "cppbench.contention"},
+			[]string{path + "cppbench.contention", path + "cppbench.contention"},
+			nil,
+			true,
+			nil,
+			"",
+		},
+		{
+			"normalized different base and source",
+			[]string{path + "cppbench.contention"},
+			[]string{path + "cppbench.small.contention"},
+			nil,
+			true,
+			[]WantSample{
+				{
+					values: []int64{-229, -370},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{28, 0},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{57, 0},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{28, 80},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{28, 0},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{85, 287},
+					labels: map[string][]string{},
+				},
+			},
+			"",
+		},
+		{
+			"not normalized diff base is same as source",
+			[]string{path + "cppbench.contention"},
+			nil,
+			[]string{path + "cppbench.contention"},
+			false,
+			[]WantSample{
+				{
+					values: []int64{2700, 608881724},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{100, 23992},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{200, 179943},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{100, 17778444},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{100, 75976},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{300, 63568134},
+					labels: map[string][]string{},
+				},
+				{
+					values: []int64{-2700, -608881724},
+					labels: map[string][]string{"pprof::base": {"true"}},
+				},
+				{
+					values: []int64{-100, -23992},
+					labels: map[string][]string{"pprof::base": {"true"}},
+				},
+				{
+					values: []int64{-200, -179943},
+					labels: map[string][]string{"pprof::base": {"true"}},
+				},
+				{
+					values: []int64{-100, -17778444},
+					labels: map[string][]string{"pprof::base": {"true"}},
+				},
+				{
+					values: []int64{-100, -75976},
+					labels: map[string][]string{"pprof::base": {"true"}},
+				},
+				{
+					values: []int64{-300, -63568134},
+					labels: map[string][]string{"pprof::base": {"true"}},
+				},
+			},
+			"",
+		},
+		{
+			"diff_base and base both specified",
+			[]string{path + "cppbench.contention"},
+			[]string{path + "cppbench.contention"},
+			[]string{path + "cppbench.contention"},
+			false,
+			nil,
+			"-base and -diff_base flags cannot both be specified",
+		},
+	}
+
+	for _, tc := range testcases {
+		t.Run(tc.desc, func(t *testing.T) {
+			pprofVariables = baseVars.makeCopy()
+			f := testFlags{
+				stringLists: map[string][]string{
+					"base":      tc.bases,
+					"diff_base": tc.diffBases,
+				},
+				bools: map[string]bool{
+					"normalize": tc.normalize,
+				},
+			}
+			f.args = tc.sources
+
+			o := setDefaults(&plugin.Options{
+				UI:            &proftest.TestUI{T: t, AllowRx: "Local symbolization failed|Some binary filenames not available"},
+				Flagset:       f,
+				HTTPTransport: transport.New(nil),
+			})
+			src, _, err := parseFlags(o)
+
+			if tc.wantErrorMsg != "" {
+				if err == nil {
+					t.Fatalf("got nil, want error %q", tc.wantErrorMsg)
+				}
+
+				if gotErrMsg := err.Error(); gotErrMsg != tc.wantErrorMsg {
+					t.Fatalf("got error %q, want error %q", gotErrMsg, tc.wantErrorMsg)
+				}
+				return
+			}
+
+			if err != nil {
+				t.Fatalf("got error %q, want no error", err)
+			}
+
+			p, err := fetchProfiles(src, o)
+
+			if err != nil {
+				t.Fatalf("got error %q, want no error", err)
+			}
+
+			if got, want := len(p.Sample), len(tc.wantSamples); got != want {
+				t.Fatalf("got %d samples want %d", got, want)
+			}
+
+			for i, sample := range p.Sample {
+				if !reflect.DeepEqual(tc.wantSamples[i].values, sample.Value) {
+					t.Errorf("for sample %d got values %v, want %v", i, sample.Value, tc.wantSamples[i])
+				}
+				if !reflect.DeepEqual(tc.wantSamples[i].labels, sample.Label) {
+					t.Errorf("for sample %d got labels %v, want %v", i, sample.Label, tc.wantSamples[i].labels)
+				}
+			}
+		})
+	}
+}
+
+// mappingSources creates MappingSources map with a single item.
+func mappingSources(key, source string, start uint64) plugin.MappingSources {
+	return plugin.MappingSources{
+		key: []struct {
+			Source string
+			Start  uint64
+		}{
+			{Source: source, Start: start},
+		},
+	}
+}
+
+type httpTransport struct{}
+
+func (tr *httpTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	values := req.URL.Query()
+	file := values.Get("file")
+
+	if file == "" {
+		return nil, fmt.Errorf("want .../file?profile, got %s", req.URL.String())
+	}
+
+	t := &http.Transport{}
+	t.RegisterProtocol("file", http.NewFileTransport(http.Dir("testdata/")))
+
+	c := &http.Client{Transport: t}
+	return c.Get("file:///" + file)
+}
+
+func closedError() string {
+	if runtime.GOOS == "plan9" {
+		return "listen hungup"
+	}
+	return "use of closed"
+}
+
+func TestHTTPSInsecure(t *testing.T) {
+	if runtime.GOOS == "nacl" || runtime.GOOS == "js" {
+		t.Skip("test assumes tcp available")
+	}
+	saveHome := os.Getenv(homeEnv())
+	tempdir, err := ioutil.TempDir("", "home")
+	if err != nil {
+		t.Fatal("creating temp dir: ", err)
+	}
+	defer os.RemoveAll(tempdir)
+
+	// pprof writes to $HOME/pprof by default which is not necessarily
+	// writeable (e.g. on a Debian buildd) so set $HOME to something we
+	// know we can write to for the duration of the test.
+	os.Setenv(homeEnv(), tempdir)
+	defer os.Setenv(homeEnv(), saveHome)
+
+	baseVars := pprofVariables
+	pprofVariables = baseVars.makeCopy()
+	defer func() { pprofVariables = baseVars }()
+
+	tlsCert, _, _ := selfSignedCert(t, "")
+	tlsConfig := &tls.Config{Certificates: []tls.Certificate{tlsCert}}
+
+	l, err := tls.Listen("tcp", "localhost:0", tlsConfig)
+	if err != nil {
+		t.Fatalf("net.Listen: got error %v, want no error", err)
+	}
+
+	donec := make(chan error, 1)
+	go func(donec chan<- error) {
+		donec <- http.Serve(l, nil)
+	}(donec)
+	defer func() {
+		if got, want := <-donec, closedError(); !strings.Contains(got.Error(), want) {
+			t.Fatalf("Serve got error %v, want %q", got, want)
+		}
+	}()
+	defer l.Close()
+
+	outputTempFile, err := ioutil.TempFile("", "profile_output")
+	if err != nil {
+		t.Fatalf("Failed to create tempfile: %v", err)
+	}
+	defer os.Remove(outputTempFile.Name())
+	defer outputTempFile.Close()
+
+	address := "https+insecure://" + l.Addr().String() + "/debug/pprof/goroutine"
+	s := &source{
+		Sources:   []string{address},
+		Seconds:   10,
+		Timeout:   10,
+		Symbolize: "remote",
+	}
+	o := &plugin.Options{
+		Obj:           &binutils.Binutils{},
+		UI:            &proftest.TestUI{T: t, AllowRx: "Saved profile in"},
+		HTTPTransport: transport.New(nil),
+	}
+	o.Sym = &symbolizer.Symbolizer{Obj: o.Obj, UI: o.UI}
+	p, err := fetchProfiles(s, o)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(p.SampleType) == 0 {
+		t.Fatalf("fetchProfiles(%s) got empty profile: len(p.SampleType)==0", address)
+	}
+	if len(p.Function) == 0 {
+		t.Fatalf("fetchProfiles(%s) got non-symbolized profile: len(p.Function)==0", address)
+	}
+	if err := checkProfileHasFunction(p, "TestHTTPSInsecure"); err != nil {
+		t.Fatalf("fetchProfiles(%s) %v", address, err)
+	}
+}
+
+func TestHTTPSWithServerCertFetch(t *testing.T) {
+	if runtime.GOOS == "nacl" || runtime.GOOS == "js" {
+		t.Skip("test assumes tcp available")
+	}
+	saveHome := os.Getenv(homeEnv())
+	tempdir, err := ioutil.TempDir("", "home")
+	if err != nil {
+		t.Fatal("creating temp dir: ", err)
+	}
+	defer os.RemoveAll(tempdir)
+
+	// pprof writes to $HOME/pprof by default which is not necessarily
+	// writeable (e.g. on a Debian buildd) so set $HOME to something we
+	// know we can write to for the duration of the test.
+	os.Setenv(homeEnv(), tempdir)
+	defer os.Setenv(homeEnv(), saveHome)
+
+	baseVars := pprofVariables
+	pprofVariables = baseVars.makeCopy()
+	defer func() { pprofVariables = baseVars }()
+
+	cert, certBytes, keyBytes := selfSignedCert(t, "localhost")
+	cas := x509.NewCertPool()
+	cas.AppendCertsFromPEM(certBytes)
+
+	tlsConfig := &tls.Config{
+		RootCAs:      cas,
+		Certificates: []tls.Certificate{cert},
+		ClientAuth:   tls.RequireAndVerifyClientCert,
+		ClientCAs:    cas,
+	}
+
+	l, err := tls.Listen("tcp", "localhost:0", tlsConfig)
+	if err != nil {
+		t.Fatalf("net.Listen: got error %v, want no error", err)
+	}
+
+	donec := make(chan error, 1)
+	go func(donec chan<- error) {
+		donec <- http.Serve(l, nil)
+	}(donec)
+	defer func() {
+		if got, want := <-donec, closedError(); !strings.Contains(got.Error(), want) {
+			t.Fatalf("Serve got error %v, want %q", got, want)
+		}
+	}()
+	defer l.Close()
+
+	outputTempFile, err := ioutil.TempFile("", "profile_output")
+	if err != nil {
+		t.Fatalf("Failed to create tempfile: %v", err)
+	}
+	defer os.Remove(outputTempFile.Name())
+	defer outputTempFile.Close()
+
+	// Get port from the address, so request to the server can be made using
+	// the host name specified in certificates.
+	_, portStr, err := net.SplitHostPort(l.Addr().String())
+	if err != nil {
+		t.Fatalf("cannot get port from URL: %v", err)
+	}
+	address := "https://" + "localhost:" + portStr + "/debug/pprof/goroutine"
+	s := &source{
+		Sources:   []string{address},
+		Seconds:   10,
+		Timeout:   10,
+		Symbolize: "remote",
+	}
+
+	certTempFile, err := ioutil.TempFile("", "cert_output")
+	if err != nil {
+		t.Errorf("cannot create cert tempfile: %v", err)
+	}
+	defer os.Remove(certTempFile.Name())
+	defer certTempFile.Close()
+	certTempFile.Write(certBytes)
+
+	keyTempFile, err := ioutil.TempFile("", "key_output")
+	if err != nil {
+		t.Errorf("cannot create key tempfile: %v", err)
+	}
+	defer os.Remove(keyTempFile.Name())
+	defer keyTempFile.Close()
+	keyTempFile.Write(keyBytes)
+
+	f := &testFlags{
+		strings: map[string]string{
+			"tls_cert": certTempFile.Name(),
+			"tls_key":  keyTempFile.Name(),
+			"tls_ca":   certTempFile.Name(),
+		},
+	}
+	o := &plugin.Options{
+		Obj:           &binutils.Binutils{},
+		UI:            &proftest.TestUI{T: t, AllowRx: "Saved profile in"},
+		Flagset:       f,
+		HTTPTransport: transport.New(f),
+	}
+
+	o.Sym = &symbolizer.Symbolizer{Obj: o.Obj, UI: o.UI, Transport: o.HTTPTransport}
+	p, err := fetchProfiles(s, o)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(p.SampleType) == 0 {
+		t.Fatalf("fetchProfiles(%s) got empty profile: len(p.SampleType)==0", address)
+	}
+	if len(p.Function) == 0 {
+		t.Fatalf("fetchProfiles(%s) got non-symbolized profile: len(p.Function)==0", address)
+	}
+	if err := checkProfileHasFunction(p, "TestHTTPSWithServerCertFetch"); err != nil {
+		t.Fatalf("fetchProfiles(%s) %v", address, err)
+	}
+}
+
+func checkProfileHasFunction(p *profile.Profile, fname string) error {
+	for _, f := range p.Function {
+		if strings.Contains(f.Name, fname) {
+			return nil
+		}
+	}
+	return fmt.Errorf("got %s, want function %q", p.String(), fname)
+}
+
+// selfSignedCert generates a self-signed certificate, and returns the
+// generated certificate, and byte arrays containing the certificate and
+// key associated with the certificate.
+func selfSignedCert(t *testing.T, host string) (tls.Certificate, []byte, []byte) {
+	privKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	if err != nil {
+		t.Fatalf("failed to generate private key: %v", err)
+	}
+	b, err := x509.MarshalECPrivateKey(privKey)
+	if err != nil {
+		t.Fatalf("failed to marshal private key: %v", err)
+	}
+	bk := pem.EncodeToMemory(&pem.Block{Type: "EC PRIVATE KEY", Bytes: b})
+
+	tmpl := x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		NotBefore:    time.Now(),
+		NotAfter:     time.Now().Add(10 * time.Minute),
+		IsCA:         true,
+		DNSNames:     []string{host},
+	}
+
+	b, err = x509.CreateCertificate(rand.Reader, &tmpl, &tmpl, privKey.Public(), privKey)
+	if err != nil {
+		t.Fatalf("failed to create cert: %v", err)
+	}
+	bc := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: b})
+
+	cert, err := tls.X509KeyPair(bc, bk)
+	if err != nil {
+		t.Fatalf("failed to create TLS key pair: %v", err)
+	}
+	return cert, bc, bk
+}

vendor/github.com/google/pprof/internal/driver/flags.go

@@ -0,0 +1,92 @@
+//  Copyright 2018 Google Inc. All Rights Reserved.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+package driver
+
+import (
+	"flag"
+	"strings"
+)
+
+// GoFlags implements the plugin.FlagSet interface.
+type GoFlags struct {
+	UsageMsgs []string
+}
+
+// Bool implements the plugin.FlagSet interface.
+func (*GoFlags) Bool(o string, d bool, c string) *bool {
+	return flag.Bool(o, d, c)
+}
+
+// Int implements the plugin.FlagSet interface.
+func (*GoFlags) Int(o string, d int, c string) *int {
+	return flag.Int(o, d, c)
+}
+
+// Float64 implements the plugin.FlagSet interface.
+func (*GoFlags) Float64(o string, d float64, c string) *float64 {
+	return flag.Float64(o, d, c)
+}
+
+// String implements the plugin.FlagSet interface.
+func (*GoFlags) String(o, d, c string) *string {
+	return flag.String(o, d, c)
+}
+
+// BoolVar implements the plugin.FlagSet interface.
+func (*GoFlags) BoolVar(b *bool, o string, d bool, c string) {
+	flag.BoolVar(b, o, d, c)
+}
+
+// IntVar implements the plugin.FlagSet interface.
+func (*GoFlags) IntVar(i *int, o string, d int, c string) {
+	flag.IntVar(i, o, d, c)
+}
+
+// Float64Var implements the plugin.FlagSet interface.
+// the value of the flag.
+func (*GoFlags) Float64Var(f *float64, o string, d float64, c string) {
+	flag.Float64Var(f, o, d, c)
+}
+
+// StringVar implements the plugin.FlagSet interface.
+func (*GoFlags) StringVar(s *string, o, d, c string) {
+	flag.StringVar(s, o, d, c)
+}
+
+// StringList implements the plugin.FlagSet interface.
+func (*GoFlags) StringList(o, d, c string) *[]*string {
+	return &[]*string{flag.String(o, d, c)}
+}
+
+// ExtraUsage implements the plugin.FlagSet interface.
+func (f *GoFlags) ExtraUsage() string {
+	return strings.Join(f.UsageMsgs, "\n")
+}
+
+// AddExtraUsage implements the plugin.FlagSet interface.
+func (f *GoFlags) AddExtraUsage(eu string) {
+	f.UsageMsgs = append(f.UsageMsgs, eu)
+}
+
+// Parse implements the plugin.FlagSet interface.
+func (*GoFlags) Parse(usage func()) []string {
+	flag.Usage = usage
+	flag.Parse()
+	args := flag.Args()
+	if len(args) == 0 {
+		usage()
+	}
+	return args
+}

vendor/github.com/google/pprof/internal/driver/flamegraph.go

@@ -0,0 +1,103 @@
+// Copyright 2017 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"encoding/json"
+	"html/template"
+	"net/http"
+	"strings"
+
+	"github.com/google/pprof/internal/graph"
+	"github.com/google/pprof/internal/measurement"
+	"github.com/google/pprof/internal/report"
+)
+
+type treeNode struct {
+	Name      string      `json:"n"`
+	FullName  string      `json:"f"`
+	Cum       int64       `json:"v"`
+	CumFormat string      `json:"l"`
+	Percent   string      `json:"p"`
+	Children  []*treeNode `json:"c"`
+}
+
+// flamegraph generates a web page containing a flamegraph.
+func (ui *webInterface) flamegraph(w http.ResponseWriter, req *http.Request) {
+	// Force the call tree so that the graph is a tree.
+	// Also do not trim the tree so that the flame graph contains all functions.
+	rpt, errList := ui.makeReport(w, req, []string{"svg"}, "call_tree", "true", "trim", "false")
+	if rpt == nil {
+		return // error already reported
+	}
+
+	// Generate dot graph.
+	g, config := report.GetDOT(rpt)
+	var nodes []*treeNode
+	nroots := 0
+	rootValue := int64(0)
+	nodeArr := []string{}
+	nodeMap := map[*graph.Node]*treeNode{}
+	// Make all nodes and the map, collect the roots.
+	for _, n := range g.Nodes {
+		v := n.CumValue()
+		fullName := n.Info.PrintableName()
+		node := &treeNode{
+			Name:      graph.ShortenFunctionName(fullName),
+			FullName:  fullName,
+			Cum:       v,
+			CumFormat: config.FormatValue(v),
+			Percent:   strings.TrimSpace(measurement.Percentage(v, config.Total)),
+		}
+		nodes = append(nodes, node)
+		if len(n.In) == 0 {
+			nodes[nroots], nodes[len(nodes)-1] = nodes[len(nodes)-1], nodes[nroots]
+			nroots++
+			rootValue += v
+		}
+		nodeMap[n] = node
+		// Get all node names into an array.
+		nodeArr = append(nodeArr, n.Info.Name)
+	}
+	// Populate the child links.
+	for _, n := range g.Nodes {
+		node := nodeMap[n]
+		for child := range n.Out {
+			node.Children = append(node.Children, nodeMap[child])
+		}
+	}
+
+	rootNode := &treeNode{
+		Name:      "root",
+		FullName:  "root",
+		Cum:       rootValue,
+		CumFormat: config.FormatValue(rootValue),
+		Percent:   strings.TrimSpace(measurement.Percentage(rootValue, config.Total)),
+		Children:  nodes[0:nroots],
+	}
+
+	// JSON marshalling flame graph
+	b, err := json.Marshal(rootNode)
+	if err != nil {
+		http.Error(w, "error serializing flame graph", http.StatusInternalServerError)
+		ui.options.UI.PrintErr(err)
+		return
+	}
+
+	ui.render(w, "flamegraph", rpt, errList, config.Labels, webArgs{
+		FlameGraph: template.JS(b),
+		Nodes:      nodeArr,
+	})
+}

vendor/github.com/google/pprof/internal/driver/interactive.go

@@ -0,0 +1,459 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"fmt"
+	"io"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/internal/report"
+	"github.com/google/pprof/profile"
+)
+
+var commentStart = "//:" // Sentinel for comments on options
+var tailDigitsRE = regexp.MustCompile("[0-9]+$")
+
+// interactive starts a shell to read pprof commands.
+func interactive(p *profile.Profile, o *plugin.Options) error {
+	// Enter command processing loop.
+	o.UI.SetAutoComplete(newCompleter(functionNames(p)))
+	pprofVariables.set("compact_labels", "true")
+	pprofVariables["sample_index"].help += fmt.Sprintf("Or use sample_index=name, with name in %v.\n", sampleTypes(p))
+
+	// Do not wait for the visualizer to complete, to allow multiple
+	// graphs to be visualized simultaneously.
+	interactiveMode = true
+	shortcuts := profileShortcuts(p)
+
+	// Get all groups in pprofVariables to allow for clearer error messages.
+	groups := groupOptions(pprofVariables)
+
+	greetings(p, o.UI)
+	for {
+		input, err := o.UI.ReadLine("(pprof) ")
+		if err != nil {
+			if err != io.EOF {
+				return err
+			}
+			if input == "" {
+				return nil
+			}
+		}
+
+		for _, input := range shortcuts.expand(input) {
+			// Process assignments of the form variable=value
+			if s := strings.SplitN(input, "=", 2); len(s) > 0 {
+				name := strings.TrimSpace(s[0])
+				var value string
+				if len(s) == 2 {
+					value = s[1]
+					if comment := strings.LastIndex(value, commentStart); comment != -1 {
+						value = value[:comment]
+					}
+					value = strings.TrimSpace(value)
+				}
+				if v := pprofVariables[name]; v != nil {
+					if name == "sample_index" {
+						// Error check sample_index=xxx to ensure xxx is a valid sample type.
+						index, err := p.SampleIndexByName(value)
+						if err != nil {
+							o.UI.PrintErr(err)
+							continue
+						}
+						value = p.SampleType[index].Type
+					}
+					if err := pprofVariables.set(name, value); err != nil {
+						o.UI.PrintErr(err)
+					}
+					continue
+				}
+				// Allow group=variable syntax by converting into variable="".
+				if v := pprofVariables[value]; v != nil && v.group == name {
+					if err := pprofVariables.set(value, ""); err != nil {
+						o.UI.PrintErr(err)
+					}
+					continue
+				} else if okValues := groups[name]; okValues != nil {
+					o.UI.PrintErr(fmt.Errorf("unrecognized value for %s: %q. Use one of %s", name, value, strings.Join(okValues, ", ")))
+					continue
+				}
+			}
+
+			tokens := strings.Fields(input)
+			if len(tokens) == 0 {
+				continue
+			}
+
+			switch tokens[0] {
+			case "o", "options":
+				printCurrentOptions(p, o.UI)
+				continue
+			case "exit", "quit":
+				return nil
+			case "help":
+				commandHelp(strings.Join(tokens[1:], " "), o.UI)
+				continue
+			}
+
+			args, vars, err := parseCommandLine(tokens)
+			if err == nil {
+				err = generateReportWrapper(p, args, vars, o)
+			}
+
+			if err != nil {
+				o.UI.PrintErr(err)
+			}
+		}
+	}
+}
+
+// groupOptions returns a map containing all non-empty groups
+// mapped to an array of the option names in that group in
+// sorted order.
+func groupOptions(vars variables) map[string][]string {
+	groups := make(map[string][]string)
+	for name, option := range vars {
+		group := option.group
+		if group != "" {
+			groups[group] = append(groups[group], name)
+		}
+	}
+	for _, names := range groups {
+		sort.Strings(names)
+	}
+	return groups
+}
+
+var generateReportWrapper = generateReport // For testing purposes.
+
+// greetings prints a brief welcome and some overall profile
+// information before accepting interactive commands.
+func greetings(p *profile.Profile, ui plugin.UI) {
+	numLabelUnits := identifyNumLabelUnits(p, ui)
+	ropt, err := reportOptions(p, numLabelUnits, pprofVariables)
+	if err == nil {
+		rpt := report.New(p, ropt)
+		ui.Print(strings.Join(report.ProfileLabels(rpt), "\n"))
+		if rpt.Total() == 0 && len(p.SampleType) > 1 {
+			ui.Print(`No samples were found with the default sample value type.`)
+			ui.Print(`Try "sample_index" command to analyze different sample values.`, "\n")
+		}
+	}
+	ui.Print(`Entering interactive mode (type "help" for commands, "o" for options)`)
+}
+
+// shortcuts represents composite commands that expand into a sequence
+// of other commands.
+type shortcuts map[string][]string
+
+func (a shortcuts) expand(input string) []string {
+	input = strings.TrimSpace(input)
+	if a != nil {
+		if r, ok := a[input]; ok {
+			return r
+		}
+	}
+	return []string{input}
+}
+
+var pprofShortcuts = shortcuts{
+	":": []string{"focus=", "ignore=", "hide=", "tagfocus=", "tagignore="},
+}
+
+// profileShortcuts creates macros for convenience and backward compatibility.
+func profileShortcuts(p *profile.Profile) shortcuts {
+	s := pprofShortcuts
+	// Add shortcuts for sample types
+	for _, st := range p.SampleType {
+		command := fmt.Sprintf("sample_index=%s", st.Type)
+		s[st.Type] = []string{command}
+		s["total_"+st.Type] = []string{"mean=0", command}
+		s["mean_"+st.Type] = []string{"mean=1", command}
+	}
+	return s
+}
+
+func sampleTypes(p *profile.Profile) []string {
+	types := make([]string, len(p.SampleType))
+	for i, t := range p.SampleType {
+		types[i] = t.Type
+	}
+	return types
+}
+
+func printCurrentOptions(p *profile.Profile, ui plugin.UI) {
+	var args []string
+	type groupInfo struct {
+		set    string
+		values []string
+	}
+	groups := make(map[string]*groupInfo)
+	for n, o := range pprofVariables {
+		v := o.stringValue()
+		comment := ""
+		if g := o.group; g != "" {
+			gi, ok := groups[g]
+			if !ok {
+				gi = &groupInfo{}
+				groups[g] = gi
+			}
+			if o.boolValue() {
+				gi.set = n
+			}
+			gi.values = append(gi.values, n)
+			continue
+		}
+		switch {
+		case n == "sample_index":
+			st := sampleTypes(p)
+			if v == "" {
+				// Apply default (last sample index).
+				v = st[len(st)-1]
+			}
+			// Add comments for all sample types in profile.
+			comment = "[" + strings.Join(st, " | ") + "]"
+		case n == "source_path":
+			continue
+		case n == "nodecount" && v == "-1":
+			comment = "default"
+		case v == "":
+			// Add quotes for empty values.
+			v = `""`
+		}
+		if comment != "" {
+			comment = commentStart + " " + comment
+		}
+		args = append(args, fmt.Sprintf("  %-25s = %-20s %s", n, v, comment))
+	}
+	for g, vars := range groups {
+		sort.Strings(vars.values)
+		comment := commentStart + " [" + strings.Join(vars.values, " | ") + "]"
+		args = append(args, fmt.Sprintf("  %-25s = %-20s %s", g, vars.set, comment))
+	}
+	sort.Strings(args)
+	ui.Print(strings.Join(args, "\n"))
+}
+
+// parseCommandLine parses a command and returns the pprof command to
+// execute and a set of variables for the report.
+func parseCommandLine(input []string) ([]string, variables, error) {
+	cmd, args := input[:1], input[1:]
+	name := cmd[0]
+
+	c := pprofCommands[name]
+	if c == nil {
+		// Attempt splitting digits on abbreviated commands (eg top10)
+		if d := tailDigitsRE.FindString(name); d != "" && d != name {
+			name = name[:len(name)-len(d)]
+			cmd[0], args = name, append([]string{d}, args...)
+			c = pprofCommands[name]
+		}
+	}
+	if c == nil {
+		return nil, nil, fmt.Errorf("unrecognized command: %q", name)
+	}
+
+	if c.hasParam {
+		if len(args) == 0 {
+			return nil, nil, fmt.Errorf("command %s requires an argument", name)
+		}
+		cmd = append(cmd, args[0])
+		args = args[1:]
+	}
+
+	// Copy the variables as options set in the command line are not persistent.
+	vcopy := pprofVariables.makeCopy()
+
+	var focus, ignore string
+	for i := 0; i < len(args); i++ {
+		t := args[i]
+		if _, err := strconv.ParseInt(t, 10, 32); err == nil {
+			vcopy.set("nodecount", t)
+			continue
+		}
+		switch t[0] {
+		case '>':
+			outputFile := t[1:]
+			if outputFile == "" {
+				i++
+				if i >= len(args) {
+					return nil, nil, fmt.Errorf("unexpected end of line after >")
+				}
+				outputFile = args[i]
+			}
+			vcopy.set("output", outputFile)
+		case '-':
+			if t == "--cum" || t == "-cum" {
+				vcopy.set("cum", "t")
+				continue
+			}
+			ignore = catRegex(ignore, t[1:])
+		default:
+			focus = catRegex(focus, t)
+		}
+	}
+
+	if name == "tags" {
+		updateFocusIgnore(vcopy, "tag", focus, ignore)
+	} else {
+		updateFocusIgnore(vcopy, "", focus, ignore)
+	}
+
+	if vcopy["nodecount"].intValue() == -1 && (name == "text" || name == "top") {
+		vcopy.set("nodecount", "10")
+	}
+
+	return cmd, vcopy, nil
+}
+
+func updateFocusIgnore(v variables, prefix, f, i string) {
+	if f != "" {
+		focus := prefix + "focus"
+		v.set(focus, catRegex(v[focus].value, f))
+	}
+
+	if i != "" {
+		ignore := prefix + "ignore"
+		v.set(ignore, catRegex(v[ignore].value, i))
+	}
+}
+
+func catRegex(a, b string) string {
+	if a != "" && b != "" {
+		return a + "|" + b
+	}
+	return a + b
+}
+
+// commandHelp displays help and usage information for all Commands
+// and Variables or a specific Command or Variable.
+func commandHelp(args string, ui plugin.UI) {
+	if args == "" {
+		help := usage(false)
+		help = help + `
+  :   Clear focus/ignore/hide/tagfocus/tagignore
+
+  type "help <cmd|option>" for more information
+`
+
+		ui.Print(help)
+		return
+	}
+
+	if c := pprofCommands[args]; c != nil {
+		ui.Print(c.help(args))
+		return
+	}
+
+	if v := pprofVariables[args]; v != nil {
+		ui.Print(v.help + "\n")
+		return
+	}
+
+	ui.PrintErr("Unknown command: " + args)
+}
+
+// newCompleter creates an autocompletion function for a set of commands.
+func newCompleter(fns []string) func(string) string {
+	return func(line string) string {
+		v := pprofVariables
+		switch tokens := strings.Fields(line); len(tokens) {
+		case 0:
+			// Nothing to complete
+		case 1:
+			// Single token -- complete command name
+			if match := matchVariableOrCommand(v, tokens[0]); match != "" {
+				return match
+			}
+		case 2:
+			if tokens[0] == "help" {
+				if match := matchVariableOrCommand(v, tokens[1]); match != "" {
+					return tokens[0] + " " + match
+				}
+				return line
+			}
+			fallthrough
+		default:
+			// Multiple tokens -- complete using functions, except for tags
+			if cmd := pprofCommands[tokens[0]]; cmd != nil && tokens[0] != "tags" {
+				lastTokenIdx := len(tokens) - 1
+				lastToken := tokens[lastTokenIdx]
+				if strings.HasPrefix(lastToken, "-") {
+					lastToken = "-" + functionCompleter(lastToken[1:], fns)
+				} else {
+					lastToken = functionCompleter(lastToken, fns)
+				}
+				return strings.Join(append(tokens[:lastTokenIdx], lastToken), " ")
+			}
+		}
+		return line
+	}
+}
+
+// matchVariableOrCommand attempts to match a string token to the prefix of a Command.
+func matchVariableOrCommand(v variables, token string) string {
+	token = strings.ToLower(token)
+	found := ""
+	for cmd := range pprofCommands {
+		if strings.HasPrefix(cmd, token) {
+			if found != "" {
+				return ""
+			}
+			found = cmd
+		}
+	}
+	for variable := range v {
+		if strings.HasPrefix(variable, token) {
+			if found != "" {
+				return ""
+			}
+			found = variable
+		}
+	}
+	return found
+}
+
+// functionCompleter replaces provided substring with a function
+// name retrieved from a profile if a single match exists. Otherwise,
+// it returns unchanged substring. It defaults to no-op if the profile
+// is not specified.
+func functionCompleter(substring string, fns []string) string {
+	found := ""
+	for _, fName := range fns {
+		if strings.Contains(fName, substring) {
+			if found != "" {
+				return substring
+			}
+			found = fName
+		}
+	}
+	if found != "" {
+		return found
+	}
+	return substring
+}
+
+func functionNames(p *profile.Profile) []string {
+	var fns []string
+	for _, fn := range p.Function {
+		fns = append(fns, fn.Name)
+	}
+	return fns
+}

vendor/github.com/google/pprof/internal/driver/interactive_test.go

@@ -0,0 +1,316 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"fmt"
+	"math/rand"
+	"strings"
+	"testing"
+
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/internal/proftest"
+	"github.com/google/pprof/internal/report"
+	"github.com/google/pprof/internal/transport"
+	"github.com/google/pprof/profile"
+)
+
+func TestShell(t *testing.T) {
+	p := &profile.Profile{}
+	generateReportWrapper = checkValue
+	defer func() { generateReportWrapper = generateReport }()
+
+	// Use test commands and variables to exercise interactive processing
+	var savedCommands commands
+	savedCommands, pprofCommands = pprofCommands, testCommands
+	defer func() { pprofCommands = savedCommands }()
+
+	savedVariables := pprofVariables
+	defer func() { pprofVariables = savedVariables }()
+
+	// Random interleave of independent scripts
+	pprofVariables = testVariables(savedVariables)
+
+	// pass in HTTPTransport when setting defaults, because otherwise default
+	// transport will try to add flags to the default flag set.
+	o := setDefaults(&plugin.Options{HTTPTransport: transport.New(nil)})
+	o.UI = newUI(t, interleave(script, 0))
+	if err := interactive(p, o); err != nil {
+		t.Error("first attempt:", err)
+	}
+	// Random interleave of independent scripts
+	pprofVariables = testVariables(savedVariables)
+	o.UI = newUI(t, interleave(script, 1))
+	if err := interactive(p, o); err != nil {
+		t.Error("second attempt:", err)
+	}
+
+	// Random interleave of independent scripts with shortcuts
+	pprofVariables = testVariables(savedVariables)
+	var scScript []string
+	pprofShortcuts, scScript = makeShortcuts(interleave(script, 2), 1)
+	o.UI = newUI(t, scScript)
+	if err := interactive(p, o); err != nil {
+		t.Error("first shortcut attempt:", err)
+	}
+
+	// Random interleave of independent scripts with shortcuts
+	pprofVariables = testVariables(savedVariables)
+	pprofShortcuts, scScript = makeShortcuts(interleave(script, 1), 2)
+	o.UI = newUI(t, scScript)
+	if err := interactive(p, o); err != nil {
+		t.Error("second shortcut attempt:", err)
+	}
+
+	// Group with invalid value
+	pprofVariables = testVariables(savedVariables)
+	ui := &proftest.TestUI{
+		T:       t,
+		Input:   []string{"cumulative=this"},
+		AllowRx: `unrecognized value for cumulative: "this". Use one of cum, flat`,
+	}
+	o.UI = ui
+	if err := interactive(p, o); err != nil {
+		t.Error("invalid group value:", err)
+	}
+	// Confirm error message written out once.
+	if ui.NumAllowRxMatches != 1 {
+		t.Errorf("want error message to be printed 1 time, got %v", ui.NumAllowRxMatches)
+	}
+	// Verify propagation of IO errors
+	pprofVariables = testVariables(savedVariables)
+	o.UI = newUI(t, []string{"**error**"})
+	if err := interactive(p, o); err == nil {
+		t.Error("expected IO error, got nil")
+	}
+
+}
+
+var testCommands = commands{
+	"check": &command{report.Raw, nil, nil, true, "", ""},
+}
+
+func testVariables(base variables) variables {
+	v := base.makeCopy()
+
+	v["b"] = &variable{boolKind, "f", "", ""}
+	v["bb"] = &variable{boolKind, "f", "", ""}
+	v["i"] = &variable{intKind, "0", "", ""}
+	v["ii"] = &variable{intKind, "0", "", ""}
+	v["f"] = &variable{floatKind, "0", "", ""}
+	v["ff"] = &variable{floatKind, "0", "", ""}
+	v["s"] = &variable{stringKind, "", "", ""}
+	v["ss"] = &variable{stringKind, "", "", ""}
+
+	v["ta"] = &variable{boolKind, "f", "radio", ""}
+	v["tb"] = &variable{boolKind, "f", "radio", ""}
+	v["tc"] = &variable{boolKind, "t", "radio", ""}
+
+	return v
+}
+
+// script contains sequences of commands to be executed for testing. Commands
+// are split by semicolon and interleaved randomly, so they must be
+// independent from each other.
+var script = []string{
+	"bb=true;bb=false;check bb=false;bb=yes;check bb=true",
+	"b=1;check b=true;b=n;check b=false",
+	"i=-1;i=-2;check i=-2;i=999999;check i=999999",
+	"check ii=0;ii=-1;check ii=-1;ii=100;check ii=100",
+	"f=-1;f=-2.5;check f=-2.5;f=0.0001;check f=0.0001",
+	"check ff=0;ff=-1.01;check ff=-1.01;ff=100;check ff=100",
+	"s=one;s=two;check s=two",
+	"ss=tree;check ss=tree;ss=;check ss;ss=forest;check ss=forest",
+	"ta=true;check ta=true;check tb=false;check tc=false;tb=1;check tb=true;check ta=false;check tc=false;tc=yes;check tb=false;check ta=false;check tc=true",
+}
+
+func makeShortcuts(input []string, seed int) (shortcuts, []string) {
+	rand.Seed(int64(seed))
+
+	s := shortcuts{}
+	var output, chunk []string
+	for _, l := range input {
+		chunk = append(chunk, l)
+		switch rand.Intn(3) {
+		case 0:
+			// Create a macro for commands in 'chunk'.
+			macro := fmt.Sprintf("alias%d", len(s))
+			s[macro] = chunk
+			output = append(output, macro)
+			chunk = nil
+		case 1:
+			// Append commands in 'chunk' by themselves.
+			output = append(output, chunk...)
+			chunk = nil
+		case 2:
+			// Accumulate commands into 'chunk'
+		}
+	}
+	output = append(output, chunk...)
+	return s, output
+}
+
+func newUI(t *testing.T, input []string) plugin.UI {
+	return &proftest.TestUI{
+		T:     t,
+		Input: input,
+	}
+}
+
+func checkValue(p *profile.Profile, cmd []string, vars variables, o *plugin.Options) error {
+	if len(cmd) != 2 {
+		return fmt.Errorf("expected len(cmd)==2, got %v", cmd)
+	}
+
+	input := cmd[1]
+	args := strings.SplitN(input, "=", 2)
+	if len(args) == 0 {
+		return fmt.Errorf("unexpected empty input")
+	}
+	name, value := args[0], ""
+	if len(args) == 2 {
+		value = args[1]
+	}
+
+	gotv := vars[name]
+	if gotv == nil {
+		return fmt.Errorf("Could not find variable named %s", name)
+	}
+
+	if got := gotv.stringValue(); got != value {
+		return fmt.Errorf("Variable %s, want %s, got %s", name, value, got)
+	}
+	return nil
+}
+
+func interleave(input []string, seed int) []string {
+	var inputs [][]string
+	for _, s := range input {
+		inputs = append(inputs, strings.Split(s, ";"))
+	}
+	rand.Seed(int64(seed))
+	var output []string
+	for len(inputs) > 0 {
+		next := rand.Intn(len(inputs))
+		output = append(output, inputs[next][0])
+		if tail := inputs[next][1:]; len(tail) > 0 {
+			inputs[next] = tail
+		} else {
+			inputs = append(inputs[:next], inputs[next+1:]...)
+		}
+	}
+	return output
+}
+
+func TestInteractiveCommands(t *testing.T) {
+	type interactiveTestcase struct {
+		input string
+		want  map[string]string
+	}
+
+	testcases := []interactiveTestcase{
+		{
+			"top 10 --cum focus1 -ignore focus2",
+			map[string]string{
+				"functions": "true",
+				"nodecount": "10",
+				"cum":       "true",
+				"focus":     "focus1|focus2",
+				"ignore":    "ignore",
+			},
+		},
+		{
+			"top10 --cum focus1 -ignore focus2",
+			map[string]string{
+				"functions": "true",
+				"nodecount": "10",
+				"cum":       "true",
+				"focus":     "focus1|focus2",
+				"ignore":    "ignore",
+			},
+		},
+		{
+			"dot",
+			map[string]string{
+				"functions": "true",
+				"nodecount": "80",
+				"cum":       "false",
+			},
+		},
+		{
+			"tags   -ignore1 -ignore2 focus1 >out",
+			map[string]string{
+				"functions": "true",
+				"nodecount": "80",
+				"cum":       "false",
+				"output":    "out",
+				"tagfocus":  "focus1",
+				"tagignore": "ignore1|ignore2",
+			},
+		},
+		{
+			"weblist  find -test",
+			map[string]string{
+				"functions": "false",
+				"addresses": "true",
+				"noinlines": "true",
+				"nodecount": "0",
+				"cum":       "false",
+				"flat":      "true",
+				"ignore":    "test",
+			},
+		},
+		{
+			"callgrind   fun -ignore  >out",
+			map[string]string{
+				"functions": "false",
+				"addresses": "true",
+				"nodecount": "0",
+				"cum":       "false",
+				"flat":      "true",
+				"output":    "out",
+			},
+		},
+		{
+			"999",
+			nil, // Error
+		},
+	}
+
+	for _, tc := range testcases {
+		cmd, vars, err := parseCommandLine(strings.Fields(tc.input))
+		if tc.want == nil && err != nil {
+			// Error expected
+			continue
+		}
+		if err != nil {
+			t.Errorf("failed on %q: %v", tc.input, err)
+			continue
+		}
+
+		// Get report output format
+		c := pprofCommands[cmd[0]]
+		if c == nil {
+			t.Errorf("unexpected nil command")
+		}
+		vars = applyCommandOverrides(cmd[0], c.format, vars)
+
+		for n, want := range tc.want {
+			if got := vars[n].stringValue(); got != want {
+				t.Errorf("failed on %q, cmd=%q, %s got %s, want %s", tc.input, cmd, n, got, want)
+			}
+		}
+	}
+}

vendor/github.com/google/pprof/internal/driver/options.go

@@ -0,0 +1,100 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+
+	"github.com/google/pprof/internal/binutils"
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/internal/symbolizer"
+	"github.com/google/pprof/internal/transport"
+)
+
+// setDefaults returns a new plugin.Options with zero fields sets to
+// sensible defaults.
+func setDefaults(o *plugin.Options) *plugin.Options {
+	d := &plugin.Options{}
+	if o != nil {
+		*d = *o
+	}
+	if d.Writer == nil {
+		d.Writer = oswriter{}
+	}
+	if d.Flagset == nil {
+		d.Flagset = &GoFlags{}
+	}
+	if d.Obj == nil {
+		d.Obj = &binutils.Binutils{}
+	}
+	if d.UI == nil {
+		d.UI = &stdUI{r: bufio.NewReader(os.Stdin)}
+	}
+	if d.HTTPTransport == nil {
+		d.HTTPTransport = transport.New(d.Flagset)
+	}
+	if d.Sym == nil {
+		d.Sym = &symbolizer.Symbolizer{Obj: d.Obj, UI: d.UI, Transport: d.HTTPTransport}
+	}
+	return d
+}
+
+type stdUI struct {
+	r *bufio.Reader
+}
+
+func (ui *stdUI) ReadLine(prompt string) (string, error) {
+	os.Stdout.WriteString(prompt)
+	return ui.r.ReadString('\n')
+}
+
+func (ui *stdUI) Print(args ...interface{}) {
+	ui.fprint(os.Stderr, args)
+}
+
+func (ui *stdUI) PrintErr(args ...interface{}) {
+	ui.fprint(os.Stderr, args)
+}
+
+func (ui *stdUI) IsTerminal() bool {
+	return false
+}
+
+func (ui *stdUI) WantBrowser() bool {
+	return true
+}
+
+func (ui *stdUI) SetAutoComplete(func(string) string) {
+}
+
+func (ui *stdUI) fprint(f *os.File, args []interface{}) {
+	text := fmt.Sprint(args...)
+	if !strings.HasSuffix(text, "\n") {
+		text += "\n"
+	}
+	f.WriteString(text)
+}
+
+// oswriter implements the Writer interface using a regular file.
+type oswriter struct{}
+
+func (oswriter) Open(name string) (io.WriteCloser, error) {
+	f, err := os.Create(name)
+	return f, err
+}

vendor/github.com/google/pprof/internal/driver/svg.go

@@ -0,0 +1,80 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"regexp"
+	"strings"
+
+	"github.com/google/pprof/third_party/svgpan"
+)
+
+var (
+	viewBox  = regexp.MustCompile(`<svg\s*width="[^"]+"\s*height="[^"]+"\s*viewBox="[^"]+"`)
+	graphID  = regexp.MustCompile(`<g id="graph\d"`)
+	svgClose = regexp.MustCompile(`</svg>`)
+)
+
+// massageSVG enhances the SVG output from DOT to provide better
+// panning inside a web browser. It uses the svgpan library, which is
+// embedded into the svgpan.JSSource variable.
+func massageSVG(svg string) string {
+	// Work around for dot bug which misses quoting some ampersands,
+	// resulting on unparsable SVG.
+	svg = strings.Replace(svg, "&;", "&amp;;", -1)
+
+	// Dot's SVG output is
+	//
+	//    <svg width="___" height="___"
+	//     viewBox="___" xmlns=...>
+	//    <g id="graph0" transform="...">
+	//    ...
+	//    </g>
+	//    </svg>
+	//
+	// Change it to
+	//
+	//    <svg width="100%" height="100%"
+	//     xmlns=...>
+
+	//    <script type="text/ecmascript"><![CDATA[` ..$(svgpan.JSSource)... `]]></script>`
+	//    <g id="viewport" transform="translate(0,0)">
+	//    <g id="graph0" transform="...">
+	//    ...
+	//    </g>
+	//    </g>
+	//    </svg>
+
+	if loc := viewBox.FindStringIndex(svg); loc != nil {
+		svg = svg[:loc[0]] +
+			`<svg width="100%" height="100%"` +
+			svg[loc[1]:]
+	}
+
+	if loc := graphID.FindStringIndex(svg); loc != nil {
+		svg = svg[:loc[0]] +
+			`<script type="text/ecmascript"><![CDATA[` + string(svgpan.JSSource) + `]]></script>` +
+			`<g id="viewport" transform="scale(0.5,0.5) translate(0,0)">` +
+			svg[loc[0]:]
+	}
+
+	if loc := svgClose.FindStringIndex(svg); loc != nil {
+		svg = svg[:loc[0]] +
+			`</g>` +
+			svg[loc[0]:]
+	}
+
+	return svg
+}

vendor/github.com/google/pprof/internal/driver/tempfile.go

@@ -0,0 +1,54 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"sync"
+)
+
+// newTempFile returns a new output file in dir with the provided prefix and suffix.
+func newTempFile(dir, prefix, suffix string) (*os.File, error) {
+	for index := 1; index < 10000; index++ {
+		path := filepath.Join(dir, fmt.Sprintf("%s%03d%s", prefix, index, suffix))
+		if _, err := os.Stat(path); err != nil {
+			return os.Create(path)
+		}
+	}
+	// Give up
+	return nil, fmt.Errorf("could not create file of the form %s%03d%s", prefix, 1, suffix)
+}
+
+var tempFiles []string
+var tempFilesMu = sync.Mutex{}
+
+// deferDeleteTempFile marks a file to be deleted by next call to Cleanup()
+func deferDeleteTempFile(path string) {
+	tempFilesMu.Lock()
+	tempFiles = append(tempFiles, path)
+	tempFilesMu.Unlock()
+}
+
+// cleanupTempFiles removes any temporary files selected for deferred cleaning.
+func cleanupTempFiles() {
+	tempFilesMu.Lock()
+	for _, f := range tempFiles {
+		os.Remove(f)
+	}
+	tempFiles = nil
+	tempFilesMu.Unlock()
+}

vendor/github.com/google/pprof/internal/driver/testdata/cppbench.contention

@@ -0,0 +1,24 @@
+--- contentionz 1 ---
+cycles/second = 3201000000
+sampling period = 100
+ms since reset = 16502830
+discarded samples = 0
+  19490304       27 @ 0xbccc97 0xc61202 0x42ed5f 0x42edc1 0x42e15a 0x5261af 0x526edf 0x5280ab 0x79e80a 0x7a251b 0x7a296d 0xa456e4 0x7fcdc2ff214e
+       768        1 @ 0xbccc97 0xa42dc7 0xa456e4 0x7fcdc2ff214e
+      5760        2 @ 0xbccc97 0xb82b73 0xb82bcb 0xb87eab 0xb8814c 0x4e969d 0x4faa17 0x4fc5f6 0x4fd028 0x4fd230 0x79e80a 0x7a251b 0x7a296d 0xa456e4 0x7fcdc2ff214e
+    569088        1 @ 0xbccc97 0xb82b73 0xb82bcb 0xb87f08 0xb8814c 0x42ed5f 0x42edc1 0x42e15a 0x5261af 0x526edf 0x5280ab 0x79e80a 0x7a251b 0x7a296d 0xa456e4 0x7fcdc2ff214e
+      2432        1 @ 0xbccc97 0xb82b73 0xb82bcb 0xb87eab 0xb8814c 0x7aa74c 0x7ab844 0x7ab914 0x79e9e9 0x79e326 0x4d299e 0x4d4b7b 0x4b7be8 0x4b7ff1 0x4d2dae 0x79e80a
+   2034816        3 @ 0xbccc97 0xb82f0f 0xb83003 0xb87d50 0xc635f0 0x42ecc3 0x42e14c 0x5261af 0x526edf 0x5280ab 0x79e80a 0x7a251b 0x7a296d 0xa456e4 0x7fcdc2ff214e
+--- Memory map: ---
+  00400000-00fcb000: cppbench_server_main
+  7fcdc231e000-7fcdc2321000: /libnss_cache-2.15.so
+  7fcdc2522000-7fcdc252e000: /libnss_files-2.15.so
+  7fcdc272f000-7fcdc28dd000: /libc-2.15.so
+  7fcdc2ae7000-7fcdc2be2000: /libm-2.15.so
+  7fcdc2de3000-7fcdc2dea000: /librt-2.15.so
+  7fcdc2feb000-7fcdc3003000: /libpthread-2.15.so
+  7fcdc3208000-7fcdc320a000: /libdl-2.15.so
+  7fcdc340c000-7fcdc3415000: /libcrypt-2.15.so
+  7fcdc3645000-7fcdc3669000: /ld-2.15.so
+  7fff86bff000-7fff86c00000: [vdso]
+  ffffffffff600000-ffffffffff601000: [vsyscall]

vendor/github.com/google/pprof/internal/driver/testdata/cppbench.small.contention

@@ -0,0 +1,19 @@
+--- contentionz 1 ---
+cycles/second = 3201000000
+sampling period = 100
+ms since reset = 16502830
+discarded samples = 0
+       100     10 @ 0xbccc97 0xc61202 0x42ed5f 0x42edc1 0x42e15a 0x5261af 0x526edf 0x5280ab 0x79e80a 0x7a251b 0x7a296d 0xa456e4 0x7fcdc2ff214e
+--- Memory map: ---
+  00400000-00fcb000: cppbench_server_main
+  7fcdc231e000-7fcdc2321000: /libnss_cache-2.15.so
+  7fcdc2522000-7fcdc252e000: /libnss_files-2.15.so
+  7fcdc272f000-7fcdc28dd000: /libc-2.15.so
+  7fcdc2ae7000-7fcdc2be2000: /libm-2.15.so
+  7fcdc2de3000-7fcdc2dea000: /librt-2.15.so
+  7fcdc2feb000-7fcdc3003000: /libpthread-2.15.so
+  7fcdc3208000-7fcdc320a000: /libdl-2.15.so
+  7fcdc340c000-7fcdc3415000: /libcrypt-2.15.so
+  7fcdc3645000-7fcdc3669000: /ld-2.15.so
+  7fff86bff000-7fff86c00000: [vdso]
+  ffffffffff600000-ffffffffff601000: [vsyscall]

vendor/github.com/google/pprof/internal/driver/testdata/file1000.src

@@ -0,0 +1,17 @@
+line1
+line2
+line3
+line4
+line5
+line6
+line7
+line8
+line9
+line0
+line1
+line2
+line3
+line4
+line5
+		
+

vendor/github.com/google/pprof/internal/driver/testdata/file2000.src

@@ -0,0 +1,17 @@
+line1
+line2
+line3
+line4
+line5
+line6
+line7
+line8
+line9
+line0
+line1
+line2
+line3
+line4
+line5
+		
+

vendor/github.com/google/pprof/internal/driver/testdata/file3000.src

@@ -0,0 +1,17 @@
+line1
+line2
+line3
+line4
+line5
+line6
+line7
+line8
+line9
+line0
+line1
+line2
+line3
+line4
+line5
+		
+

vendor/github.com/google/pprof/internal/driver/testdata/pprof.contention.cum.files.dot

@@ -0,0 +1,10 @@
+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Build ID: buildid-contention" [shape=box fontsize=16 label="Build ID: buildid-contention\lComment #1\lComment #2\lType: delay\lShowing nodes accounting for 149.50ms, 100% of 149.50ms total\l"] }
+N1 [label="file3000.src\n32.77ms (21.92%)\nof 149.50ms (100%)" id="node1" fontsize=20 shape=box tooltip="testdata/file3000.src (149.50ms)" color="#b20000" fillcolor="#edd5d5"]
+N2 [label="file1000.src\n51.20ms (34.25%)" id="node2" fontsize=23 shape=box tooltip="testdata/file1000.src (51.20ms)" color="#b23100" fillcolor="#eddbd5"]
+N3 [label="file2000.src\n65.54ms (43.84%)\nof 75.78ms (50.68%)" id="node3" fontsize=24 shape=box tooltip="testdata/file2000.src (75.78ms)" color="#b22000" fillcolor="#edd9d5"]
+N1 -> N3 [label=" 75.78ms" weight=51 penwidth=3 color="#b22000" tooltip="testdata/file3000.src -> testdata/file2000.src (75.78ms)" labeltooltip="testdata/file3000.src -> testdata/file2000.src (75.78ms)"]
+N1 -> N2 [label=" 40.96ms" weight=28 penwidth=2 color="#b23900" tooltip="testdata/file3000.src -> testdata/file1000.src (40.96ms)" labeltooltip="testdata/file3000.src -> testdata/file1000.src (40.96ms)"]
+N3 -> N2 [label=" 10.24ms" weight=7 color="#b29775" tooltip="testdata/file2000.src -> testdata/file1000.src (10.24ms)" labeltooltip="testdata/file2000.src -> testdata/file1000.src (10.24ms)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.contention.flat.addresses.dot.focus.ignore

@@ -0,0 +1,9 @@
+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Build ID: buildid-contention" [shape=box fontsize=16 label="Build ID: buildid-contention\lComment #1\lComment #2\lType: delay\lActive filters:\l   focus=[X1]000\l   ignore=[X3]002\lShowing nodes accounting for 40.96ms, 27.40% of 149.50ms total\l"] }
+N1 [label="0000000000001000\nline1000\nfile1000.src:1\n40.96ms (27.40%)" id="node1" fontsize=24 shape=box tooltip="0000000000001000 line1000 testdata/file1000.src:1 (40.96ms)" color="#b23900" fillcolor="#edddd5"]
+N2 [label="0000000000003001\nline3000\nfile3000.src:5\n0 of 40.96ms (27.40%)" id="node2" fontsize=8 shape=box tooltip="0000000000003001 line3000 testdata/file3000.src:5 (40.96ms)" color="#b23900" fillcolor="#edddd5"]
+N3 [label="0000000000003001\nline3001\nfile3000.src:3\n0 of 40.96ms (27.40%)" id="node3" fontsize=8 shape=box tooltip="0000000000003001 line3001 testdata/file3000.src:3 (40.96ms)" color="#b23900" fillcolor="#edddd5"]
+N2 -> N3 [label=" 40.96ms\n (inline)" weight=28 penwidth=2 color="#b23900" tooltip="0000000000003001 line3000 testdata/file3000.src:5 -> 0000000000003001 line3001 testdata/file3000.src:3 (40.96ms)" labeltooltip="0000000000003001 line3000 testdata/file3000.src:5 -> 0000000000003001 line3001 testdata/file3000.src:3 (40.96ms)"]
+N3 -> N1 [label=" 40.96ms" weight=28 penwidth=2 color="#b23900" tooltip="0000000000003001 line3001 testdata/file3000.src:3 -> 0000000000001000 line1000 testdata/file1000.src:1 (40.96ms)" labeltooltip="0000000000003001 line3001 testdata/file3000.src:3 -> 0000000000001000 line1000 testdata/file1000.src:1 (40.96ms)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.call_tree.callgrind

@@ -0,0 +1,99 @@
+positions: instr line
+events: cpu(ms)
+
+ob=(1) /path/to/testbinary
+fl=(1) testdata/file1000.src
+fn=(1) line1000
+0x1000 1 1000
+* 1 100
+
+ob=(1)
+fl=(2) testdata/file2000.src
+fn=(2) line2001
++4096 9 10
+
+ob=(1)
+fl=(3) testdata/file3000.src
+fn=(3) line3002
++4096 2 10
+cfl=(2)
+cfn=(4) line2000 [1/2]
+calls=0 * 4
+* * 1000
+
+ob=(1)
+fl=(2)
+fn=(5) line2000
+-4096 4 0
+cfl=(2)
+cfn=(6) line2001 [2/2]
+calls=0 -4096 9
+* * 1000
+* 4 0
+cfl=(2)
+cfn=(7) line2001 [1/2]
+calls=0 * 9
+* * 10
+
+ob=(1)
+fl=(2)
+fn=(2)
+* 9 0
+cfl=(1)
+cfn=(8) line1000 [1/2]
+calls=0 -4096 1
+* * 1000
+
+ob=(1)
+fl=(3)
+fn=(9) line3000
++4096 6 0
+cfl=(3)
+cfn=(10) line3001 [1/2]
+calls=0 +4096 5
+* * 1010
+
+ob=(1)
+fl=(3)
+fn=(11) line3001
+* 5 0
+cfl=(3)
+cfn=(12) line3002 [1/2]
+calls=0 * 2
+* * 1010
+
+ob=(1)
+fl=(3)
+fn=(9)
++1 9 0
+cfl=(3)
+cfn=(13) line3001 [2/2]
+calls=0 +1 8
+* * 100
+
+ob=(1)
+fl=(3)
+fn=(11)
+* 8 0
+cfl=(1)
+cfn=(14) line1000 [2/2]
+calls=0 -8193 1
+* * 100
+
+ob=(1)
+fl=(3)
+fn=(9)
++1 9 0
+cfl=(3)
+cfn=(15) line3002 [2/2]
+calls=0 +1 5
+* * 10
+
+ob=(1)
+fl=(3)
+fn=(3)
+* 5 0
+cfl=(2)
+cfn=(16) line2000 [2/2]
+calls=0 -4098 4
+* * 10

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.callgrind

@@ -0,0 +1,88 @@
+positions: instr line
+events: cpu(ms)
+
+ob=(1) /path/to/testbinary
+fl=(1) testdata/file1000.src
+fn=(1) line1000
+0x1000 1 1100
+
+ob=(1)
+fl=(2) testdata/file2000.src
+fn=(2) line2001
++4096 9 10
+cfl=(1)
+cfn=(1)
+calls=0 * 1
+* * 1000
+
+ob=(1)
+fl=(3) testdata/file3000.src
+fn=(3) line3002
++4096 2 10
+cfl=(2)
+cfn=(4) line2000
+calls=0 * 4
+* * 1000
+
+ob=(1)
+fl=(2)
+fn=(4)
+-4096 4 0
+cfl=(2)
+cfn=(2)
+calls=0 -4096 9
+* * 1010
+
+ob=(1)
+fl=(3)
+fn=(5) line3000
++4096 6 0
+cfl=(3)
+cfn=(6) line3001
+calls=0 +4096 5
+* * 1010
+
+ob=(1)
+fl=(3)
+fn=(6)
+* 5 0
+cfl=(3)
+cfn=(3)
+calls=0 * 2
+* * 1010
+
+ob=(1)
+fl=(3)
+fn=(5)
++1 9 0
+cfl=(3)
+cfn=(6)
+calls=0 +1 8
+* * 100
+
+ob=(1)
+fl=(3)
+fn=(6)
+* 8 0
+cfl=(1)
+cfn=(1)
+calls=0 -8193 1
+* * 100
+
+ob=(1)
+fl=(3)
+fn=(5)
++1 9 0
+cfl=(3)
+cfn=(3)
+calls=0 +1 5
+* * 10
+
+ob=(1)
+fl=(3)
+fn=(3)
+* 5 0
+cfl=(2)
+cfn=(4)
+calls=0 -4098 4
+* * 10

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.comments

@@ -0,0 +1 @@
+some-comment

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.cum.lines.text.focus.hide

@@ -0,0 +1,8 @@
+Active filters:
+   focus=[12]00
+   hide=line[X3]0
+Showing nodes accounting for 1.11s, 99.11% of 1.12s total
+      flat  flat%   sum%        cum   cum%
+     1.10s 98.21% 98.21%      1.10s 98.21%  line1000 testdata/file1000.src:1
+         0     0% 98.21%      1.01s 90.18%  line2000 testdata/file2000.src:4
+     0.01s  0.89% 99.11%      1.01s 90.18%  line2001 testdata/file2000.src:9 (inline)

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.cum.lines.text.hide

@@ -0,0 +1,7 @@
+Active filters:
+   hide=line[X3]0
+Showing nodes accounting for 1.11s, 99.11% of 1.12s total
+      flat  flat%   sum%        cum   cum%
+     1.10s 98.21% 98.21%      1.10s 98.21%  line1000 testdata/file1000.src:1
+         0     0% 98.21%      1.01s 90.18%  line2000 testdata/file2000.src:4
+     0.01s  0.89% 99.11%      1.01s 90.18%  line2001 testdata/file2000.src:9 (inline)

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.cum.lines.text.show

@@ -0,0 +1,7 @@
+Active filters:
+   show=[12]00
+Showing nodes accounting for 1.11s, 99.11% of 1.12s total
+      flat  flat%   sum%        cum   cum%
+     1.10s 98.21% 98.21%      1.10s 98.21%  line1000 testdata/file1000.src:1
+         0     0% 98.21%      1.01s 90.18%  line2000 testdata/file2000.src:4
+     0.01s  0.89% 99.11%      1.01s 90.18%  line2001 testdata/file2000.src:9 (inline)

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.cum.lines.topproto.hide

@@ -0,0 +1,5 @@
+Active filters:
+   hide=mangled[X3]0
+Showing nodes accounting for 1s, 100% of 1s total
+      flat  flat%   sum%        cum   cum%
+        1s   100%   100%         1s   100%  mangled1000 testdata/file1000.src:1

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.cum.lines.tree.show_from

@@ -0,0 +1,16 @@
+Active filters:
+   show_from=line2
+Showing nodes accounting for 1.01s, 90.18% of 1.12s total
+----------------------------------------------------------+-------------
+      flat  flat%   sum%        cum   cum%   calls calls% + context 	 	 
+----------------------------------------------------------+-------------
+         0     0%     0%      1.01s 90.18%                | line2000 testdata/file2000.src:4
+                                             1.01s   100% |   line2001 testdata/file2000.src:9 (inline)
+----------------------------------------------------------+-------------
+                                             1.01s   100% |   line2000 testdata/file2000.src:4 (inline)
+     0.01s  0.89%  0.89%      1.01s 90.18%                | line2001 testdata/file2000.src:9
+                                                1s 99.01% |   line1000 testdata/file1000.src:1
+----------------------------------------------------------+-------------
+                                                1s   100% |   line2001 testdata/file2000.src:9
+        1s 89.29% 90.18%         1s 89.29%                | line1000 testdata/file1000.src:1
+----------------------------------------------------------+-------------

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.addresses.disasm

@@ -0,0 +1,14 @@
+Total: 1.12s
+ROUTINE ======================== line1000
+     1.10s      1.10s (flat, cum) 98.21% of Total
+     1.10s      1.10s       1000: instruction one                         ;line1000 file1000.src:1
+         .          .       1001: instruction two                         ;file1000.src:1
+         .          .       1002: instruction three                       ;file1000.src:2
+         .          .       1003: instruction four                        ;file1000.src:1
+ROUTINE ======================== line3000
+      10ms      1.12s (flat, cum)   100% of Total
+      10ms      1.01s       3000: instruction one                         ;line3000 file3000.src:6
+         .      100ms       3001: instruction two                         ;line3000 file3000.src:9
+         .       10ms       3002: instruction three
+         .          .       3003: instruction four
+         .          .       3004: instruction five

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.addresses.noinlines.text

@@ -0,0 +1,7 @@
+Showing nodes accounting for 1.12s, 100% of 1.12s total
+Dropped 1 node (cum <= 0.06s)
+      flat  flat%   sum%        cum   cum%
+     1.10s 98.21% 98.21%      1.10s 98.21%  0000000000001000 line1000 testdata/file1000.src:1
+     0.01s  0.89% 99.11%      1.01s 90.18%  0000000000002000 line2000 testdata/file2000.src:4
+     0.01s  0.89%   100%      1.01s 90.18%  0000000000003000 line3000 testdata/file3000.src:6
+         0     0%   100%      0.10s  8.93%  0000000000003001 line3000 testdata/file3000.src:9

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.addresses.weblist

@@ -0,0 +1,106 @@
+
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="UTF-8">
+<title>Pprof listing</title>
+<style type="text/css">
+body {
+font-family: sans-serif;
+}
+h1 {
+  font-size: 1.5em;
+  margin-bottom: 4px;
+}
+.legend {
+  font-size: 1.25em;
+}
+.line, .nop, .unimportant {
+  color: #aaaaaa;
+}
+.inlinesrc {
+  color: #000066;
+}
+.deadsrc {
+cursor: pointer;
+}
+.deadsrc:hover {
+background-color: #eeeeee;
+}
+.livesrc {
+color: #0000ff;
+cursor: pointer;
+}
+.livesrc:hover {
+background-color: #eeeeee;
+}
+.asm {
+color: #008800;
+display: none;
+}
+</style>
+<script type="text/javascript">
+function pprof_toggle_asm(e) {
+  var target;
+  if (!e) e = window.event;
+  if (e.target) target = e.target;
+  else if (e.srcElement) target = e.srcElement;
+
+  if (target) {
+    var asm = target.nextSibling;
+    if (asm && asm.className == "asm") {
+      asm.style.display = (asm.style.display == "block" ? "" : "block");
+      e.preventDefault();
+      return false;
+    }
+  }
+}
+</script>
+</head>
+<body>
+
+<div class="legend">File: testbinary<br>
+Type: cpu<br>
+Duration: 10s, Total samples = 1.12s (11.20%)<br>Total: 1.12s</div><h2>line1000</h2><p class="filename">testdata/file1000.src</p>
+<pre onClick="pprof_toggle_asm(event)">
+  Total:       1.10s      1.10s (flat, cum) 98.21%
+<span class=line>      1</span> <span class=deadsrc>       1.10s      1.10s           line1 </span><span class=asm>               1.10s      1.10s     1000:     instruction one                                                              <span class=unimportant>file1000.src:1</span>
+                   .          .     1001:     instruction two                                                              <span class=unimportant>file1000.src:1</span>
+                                     ⋮
+                   .          .     1003:     instruction four                                                             <span class=unimportant>file1000.src:1</span>
+</span>
+<span class=line>      2</span> <span class=deadsrc>           .          .           line2 </span><span class=asm>                   .          .     1002:     instruction three                                                            <span class=unimportant>file1000.src:2</span>
+</span>
+<span class=line>      3</span> <span class=nop>           .          .           line3 </span>
+<span class=line>      4</span> <span class=nop>           .          .           line4 </span>
+<span class=line>      5</span> <span class=nop>           .          .           line5 </span>
+<span class=line>      6</span> <span class=nop>           .          .           line6 </span>
+<span class=line>      7</span> <span class=nop>           .          .           line7 </span>
+</pre>
+<h2>line3000</h2><p class="filename">testdata/file3000.src</p>
+<pre onClick="pprof_toggle_asm(event)">
+  Total:        10ms      1.12s (flat, cum)   100%
+<span class=line>      1</span> <span class=nop>           .          .           line1 </span>
+<span class=line>      2</span> <span class=nop>           .          .           line2 </span>
+<span class=line>      3</span> <span class=nop>           .          .           line3 </span>
+<span class=line>      4</span> <span class=nop>           .          .           line4 </span>
+<span class=line>      5</span> <span class=nop>           .          .           line5 </span>
+<span class=line>      6</span> <span class=deadsrc>        10ms      1.01s           line6 </span><span class=asm>                10ms      1.01s     3000:     instruction one                                                              <span class=unimportant>file3000.src:6</span>
+</span>
+<span class=line>      7</span> <span class=nop>           .          .           line7 </span>
+<span class=line>      8</span> <span class=nop>           .          .           line8 </span>
+<span class=line>      9</span> <span class=deadsrc>           .      110ms           line9 </span><span class=asm>                   .      100ms     3001:     instruction two                                                              <span class=unimportant>file3000.src:9</span>
+                   .       10ms     3002:     instruction three                                                            <span class=unimportant>file3000.src:9</span>
+                   .          .     3003:     instruction four                                                             <span class=unimportant></span>
+                   .          .     3004:     instruction five                                                             <span class=unimportant></span>
+</span>
+<span class=line>     10</span> <span class=nop>           .          .           line0 </span>
+<span class=line>     11</span> <span class=nop>           .          .           line1 </span>
+<span class=line>     12</span> <span class=nop>           .          .           line2 </span>
+<span class=line>     13</span> <span class=nop>           .          .           line3 </span>
+<span class=line>     14</span> <span class=nop>           .          .           line4 </span>
+</pre>
+
+</body>
+</html>
+

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.filefunctions.noinlines.text

@@ -0,0 +1,5 @@
+Showing nodes accounting for 1.12s, 100% of 1.12s total
+      flat  flat%   sum%        cum   cum%
+     1.10s 98.21% 98.21%      1.10s 98.21%  line1000 testdata/file1000.src
+     0.01s  0.89% 99.11%      1.01s 90.18%  line2000 testdata/file2000.src
+     0.01s  0.89%   100%      1.12s   100%  line3000 testdata/file3000.src

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.functions.call_tree.dot

@@ -0,0 +1,21 @@
+digraph "testbinary" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "File: testbinary" [shape=box fontsize=16 label="File: testbinary\lType: cpu\lDuration: 10s, Total samples = 1.12s (11.20%)\lShowing nodes accounting for 1.11s, 99.11% of 1.12s total\lDropped 3 nodes (cum <= 0.06s)\l" tooltip="testbinary"] }
+N1 [label="line1000\n1s (89.29%)" id="node1" fontsize=24 shape=box tooltip="line1000 (1s)" color="#b20500" fillcolor="#edd6d5"]
+N1_0 [label = "key1:tag1\nkey2:tag1" id="N1_0" fontsize=8 shape=box3d tooltip="1s"]
+N1 -> N1_0 [label=" 1s" weight=100 tooltip="1s" labeltooltip="1s"]
+N2 [label="line3000\n0 of 1.12s (100%)" id="node2" fontsize=8 shape=box tooltip="line3000 (1.12s)" color="#b20000" fillcolor="#edd5d5"]
+N3 [label="line3001\n0 of 1.11s (99.11%)" id="node3" fontsize=8 shape=box tooltip="line3001 (1.11s)" color="#b20000" fillcolor="#edd5d5"]
+N4 [label="line1000\n0.10s (8.93%)" id="node4" fontsize=14 shape=box tooltip="line1000 (0.10s)" color="#b28b62" fillcolor="#ede8e2"]
+N4_0 [label = "key1:tag2\nkey3:tag2" id="N4_0" fontsize=8 shape=box3d tooltip="0.10s"]
+N4 -> N4_0 [label=" 0.10s" weight=100 tooltip="0.10s" labeltooltip="0.10s"]
+N5 [label="line3002\n0.01s (0.89%)\nof 1.01s (90.18%)" id="node5" fontsize=10 shape=box tooltip="line3002 (1.01s)" color="#b20500" fillcolor="#edd6d5"]
+N6 [label="line2000\n0 of 1s (89.29%)" id="node6" fontsize=8 shape=box tooltip="line2000 (1s)" color="#b20500" fillcolor="#edd6d5"]
+N7 [label="line2001\n0 of 1s (89.29%)" id="node7" fontsize=8 shape=box tooltip="line2001 (1s)" color="#b20500" fillcolor="#edd6d5"]
+N2 -> N3 [label=" 1.11s\n (inline)" weight=100 penwidth=5 color="#b20000" tooltip="line3000 -> line3001 (1.11s)" labeltooltip="line3000 -> line3001 (1.11s)"]
+N3 -> N5 [label=" 1.01s\n (inline)" weight=91 penwidth=5 color="#b20500" tooltip="line3001 -> line3002 (1.01s)" labeltooltip="line3001 -> line3002 (1.01s)"]
+N6 -> N7 [label=" 1s\n (inline)" weight=90 penwidth=5 color="#b20500" tooltip="line2000 -> line2001 (1s)" labeltooltip="line2000 -> line2001 (1s)"]
+N7 -> N1 [label=" 1s" weight=90 penwidth=5 color="#b20500" tooltip="line2001 -> line1000 (1s)" labeltooltip="line2001 -> line1000 (1s)"]
+N5 -> N6 [label=" 1s" weight=90 penwidth=5 color="#b20500" tooltip="line3002 -> line2000 (1s)" labeltooltip="line3002 -> line2000 (1s)"]
+N3 -> N4 [label=" 0.10s" weight=9 color="#b28b62" tooltip="line3001 -> line1000 (0.10s)" labeltooltip="line3001 -> line1000 (0.10s)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.functions.dot

@@ -0,0 +1,20 @@
+digraph "testbinary" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "File: testbinary" [shape=box fontsize=16 label="File: testbinary\lType: cpu\lDuration: 10s, Total samples = 1.12s (11.20%)\lShowing nodes accounting for 1.12s, 100% of 1.12s total\l" tooltip="testbinary"] }
+N1 [label="line1000\n1.10s (98.21%)" id="node1" fontsize=24 shape=box tooltip="line1000 (1.10s)" color="#b20000" fillcolor="#edd5d5"]
+N1_0 [label = "key1:tag1\nkey2:tag1" id="N1_0" fontsize=8 shape=box3d tooltip="1s"]
+N1 -> N1_0 [label=" 1s" weight=100 tooltip="1s" labeltooltip="1s"]
+N1_1 [label = "key1:tag2\nkey3:tag2" id="N1_1" fontsize=8 shape=box3d tooltip="0.10s"]
+N1 -> N1_1 [label=" 0.10s" weight=100 tooltip="0.10s" labeltooltip="0.10s"]
+N2 [label="line3000\n0 of 1.12s (100%)" id="node2" fontsize=8 shape=box tooltip="line3000 (1.12s)" color="#b20000" fillcolor="#edd5d5"]
+N3 [label="line3001\n0 of 1.11s (99.11%)" id="node3" fontsize=8 shape=box tooltip="line3001 (1.11s)" color="#b20000" fillcolor="#edd5d5"]
+N4 [label="line3002\n0.01s (0.89%)\nof 1.02s (91.07%)" id="node4" fontsize=10 shape=box tooltip="line3002 (1.02s)" color="#b20400" fillcolor="#edd6d5"]
+N5 [label="line2001\n0.01s (0.89%)\nof 1.01s (90.18%)" id="node5" fontsize=10 shape=box tooltip="line2001 (1.01s)" color="#b20500" fillcolor="#edd6d5"]
+N6 [label="line2000\n0 of 1.01s (90.18%)" id="node6" fontsize=8 shape=box tooltip="line2000 (1.01s)" color="#b20500" fillcolor="#edd6d5"]
+N2 -> N3 [label=" 1.11s\n (inline)" weight=100 penwidth=5 color="#b20000" tooltip="line3000 -> line3001 (1.11s)" labeltooltip="line3000 -> line3001 (1.11s)"]
+N6 -> N5 [label=" 1.01s\n (inline)" weight=91 penwidth=5 color="#b20500" tooltip="line2000 -> line2001 (1.01s)" labeltooltip="line2000 -> line2001 (1.01s)"]
+N3 -> N4 [label=" 1.01s\n (inline)" weight=91 penwidth=5 color="#b20500" tooltip="line3001 -> line3002 (1.01s)" labeltooltip="line3001 -> line3002 (1.01s)"]
+N4 -> N6 [label=" 1.01s" weight=91 penwidth=5 color="#b20500" tooltip="line3002 -> line2000 (1.01s)" labeltooltip="line3002 -> line2000 (1.01s)"]
+N5 -> N1 [label=" 1s" weight=90 penwidth=5 color="#b20500" tooltip="line2001 -> line1000 (1s)" labeltooltip="line2001 -> line1000 (1s)"]
+N3 -> N1 [label=" 0.10s" weight=9 color="#b28b62" tooltip="line3001 -> line1000 (0.10s)" labeltooltip="line3001 -> line1000 (0.10s)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.functions.noinlines.text

@@ -0,0 +1,5 @@
+Showing nodes accounting for 1.12s, 100% of 1.12s total
+      flat  flat%   sum%        cum   cum%
+     1.10s 98.21% 98.21%      1.10s 98.21%  line1000
+     0.01s  0.89% 99.11%      1.01s 90.18%  line2000
+     0.01s  0.89%   100%      1.12s   100%  line3000

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.flat.functions.text

@@ -0,0 +1,8 @@
+Showing nodes accounting for 1.12s, 100% of 1.12s total
+      flat  flat%   sum%        cum   cum%
+     1.10s 98.21% 98.21%      1.10s 98.21%  line1000
+     0.01s  0.89% 99.11%      1.01s 90.18%  line2001 (inline)
+     0.01s  0.89%   100%      1.02s 91.07%  line3002 (inline)
+         0     0%   100%      1.01s 90.18%  line2000
+         0     0%   100%      1.12s   100%  line3000
+         0     0%   100%      1.11s 99.11%  line3001 (inline)

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.lines.topproto

@@ -0,0 +1,3 @@
+Showing nodes accounting for 1s, 100% of 1s total
+      flat  flat%   sum%        cum   cum%
+        1s   100%   100%         1s   100%  mangled1000 testdata/file1000.src:1

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.peek

@@ -0,0 +1,13 @@
+Showing nodes accounting for 1.12s, 100% of 1.12s total
+----------------------------------------------------------+-------------
+      flat  flat%   sum%        cum   cum%   calls calls% + context 	 	 
+----------------------------------------------------------+-------------
+                                             1.01s   100% |   line2000 (inline)
+     0.01s  0.89%  0.89%      1.01s 90.18%                | line2001
+                                                1s 99.01% |   line1000
+----------------------------------------------------------+-------------
+                                             1.11s   100% |   line3000 (inline)
+         0     0%  0.89%      1.11s 99.11%                | line3001
+                                             1.01s 90.99% |   line3002 (inline)
+                                             0.10s  9.01% |   line1000
+----------------------------------------------------------+-------------

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.tags

@@ -0,0 +1,13 @@
+ key1: Total 1.1s
+          1.0s (89.29%): tag1
+       100.0ms ( 8.93%): tag2
+        10.0ms ( 0.89%): tag3
+        10.0ms ( 0.89%): tag4
+
+ key2: Total 1.0s
+         1.0s (99.02%): tag1
+       10.0ms ( 0.98%): tag2
+
+ key3: Total 100.0ms
+       100.0ms (  100%): tag2
+

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.tags.focus.ignore

@@ -0,0 +1,6 @@
+ key1: Total 100.0ms
+       100.0ms (  100%): tag2
+
+ key3: Total 100.0ms
+       100.0ms (  100%): tag2
+

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpu.traces

@@ -0,0 +1,32 @@
+File: testbinary
+Type: cpu
+Duration: 10s, Total samples = 1.12s (11.20%)
+-----------+-------------------------------------------------------
+      key1:  tag1
+      key2:  tag1
+        1s   line1000
+             line2001
+             line2000
+             line3002
+             line3001
+             line3000
+-----------+-------------------------------------------------------
+      key1:  tag2
+      key3:  tag2
+     100ms   line1000
+             line3001
+             line3000
+-----------+-------------------------------------------------------
+      key1:  tag3
+      key2:  tag2
+      10ms   line2001
+             line2000
+             line3002
+             line3000
+-----------+-------------------------------------------------------
+      key1:  tag4
+      key2:  tag1
+      10ms   line3002
+             line3001
+             line3000
+-----------+-------------------------------------------------------

vendor/github.com/google/pprof/internal/driver/testdata/pprof.cpusmall.flat.addresses.tree

@@ -0,0 +1,17 @@
+Showing nodes accounting for 4s, 100% of 4s total
+Showing top 4 nodes out of 5
+----------------------------------------------------------+-------------
+      flat  flat%   sum%        cum   cum%   calls calls% + context 	 	 
+----------------------------------------------------------+-------------
+                                                1s   100% |   0000000000003000 [testbinary]
+        1s 25.00% 25.00%         1s 25.00%                | 0000000000001000 [testbinary]
+----------------------------------------------------------+-------------
+        1s 25.00% 50.00%         2s 50.00%                | 0000000000003000 [testbinary]
+                                                1s 50.00% |   0000000000001000 [testbinary]
+----------------------------------------------------------+-------------
+                                                1s   100% |   0000000000005000 [testbinary]
+        1s 25.00% 75.00%         1s 25.00%                | 0000000000004000 [testbinary]
+----------------------------------------------------------+-------------
+        1s 25.00%   100%         2s 50.00%                | 0000000000005000 [testbinary]
+                                                1s 50.00% |   0000000000004000 [testbinary]
+----------------------------------------------------------+-------------

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.callgrind

@@ -0,0 +1,88 @@
+positions: instr line
+events: inuse_space(MB)
+
+ob=
+fl=(1) testdata/file2000.src
+fn=(1) line2001
+0x2000 2 62
+cfl=(2) testdata/file1000.src
+cfn=(2) line1000
+calls=0 0x1000 1
+* * 0
+
+ob=
+fl=(3) testdata/file3000.src
+fn=(3) line3002
++4096 3 31
+cfl=(1)
+cfn=(4) line2000
+calls=0 * 3
+* * 0
+
+ob=
+fl=(2)
+fn=(2)
+-8192 1 4
+
+ob=
+fl=(1)
+fn=(4)
++4096 3 0
+cfl=(1)
+cfn=(1)
+calls=0 +4096 2
+* * 63
+
+ob=
+fl=(3)
+fn=(5) line3000
++4096 4 0
+cfl=(3)
+cfn=(6) line3001
+calls=0 +4096 2
+* * 32
+
+ob=
+fl=(3)
+fn=(6)
+* 2 0
+cfl=(3)
+cfn=(3)
+calls=0 * 3
+* * 32
+
+ob=
+fl=(3)
+fn=(5)
++1 4 0
+cfl=(3)
+cfn=(6)
+calls=0 +1 2
+* * 3
+
+ob=
+fl=(3)
+fn=(6)
+* 2 0
+cfl=(2)
+cfn=(2)
+calls=0 -8193 1
+* * 3
+
+ob=
+fl=(3)
+fn=(5)
++1 4 0
+cfl=(3)
+cfn=(3)
+calls=0 +1 3
+* * 62
+
+ob=
+fl=(3)
+fn=(3)
+* 3 0
+cfl=(1)
+cfn=(4)
+calls=0 -4098 3
+* * 62

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.comments

@@ -0,0 +1,2 @@
+comment
+#hidden comment

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.cum.lines.tree.focus

@@ -0,0 +1,21 @@
+Active filters:
+   focus=[24]00
+Showing nodes accounting for 62.50MB, 63.37% of 98.63MB total
+Dropped 2 nodes (cum <= 4.93MB)
+----------------------------------------------------------+-------------
+      flat  flat%   sum%        cum   cum%   calls calls% + context 	 	 
+----------------------------------------------------------+-------------
+                                           63.48MB   100% |   line3002 testdata/file3000.src:3
+         0     0%     0%    63.48MB 64.36%                | line2000 testdata/file2000.src:3
+                                           63.48MB   100% |   line2001 testdata/file2000.src:2 (inline)
+----------------------------------------------------------+-------------
+                                           63.48MB   100% |   line2000 testdata/file2000.src:3 (inline)
+   62.50MB 63.37% 63.37%    63.48MB 64.36%                | line2001 testdata/file2000.src:2
+----------------------------------------------------------+-------------
+         0     0% 63.37%    63.48MB 64.36%                | line3000 testdata/file3000.src:4
+                                           63.48MB   100% |   line3002 testdata/file3000.src:3 (inline)
+----------------------------------------------------------+-------------
+                                           63.48MB   100% |   line3000 testdata/file3000.src:4 (inline)
+         0     0% 63.37%    63.48MB 64.36%                | line3002 testdata/file3000.src:3
+                                           63.48MB   100% |   line2000 testdata/file2000.src:3
+----------------------------------------------------------+-------------

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.cum.relative_percentages.tree.focus

@@ -0,0 +1,21 @@
+Active filters:
+   focus=[24]00
+Showing nodes accounting for 62.50MB, 98.46% of 63.48MB total
+Dropped 2 nodes (cum <= 3.17MB)
+----------------------------------------------------------+-------------
+      flat  flat%   sum%        cum   cum%   calls calls% + context 	 	 
+----------------------------------------------------------+-------------
+                                           63.48MB   100% |   line3002
+         0     0%     0%    63.48MB   100%                | line2000
+                                           63.48MB   100% |   line2001 (inline)
+----------------------------------------------------------+-------------
+                                           63.48MB   100% |   line2000 (inline)
+   62.50MB 98.46% 98.46%    63.48MB   100%                | line2001
+----------------------------------------------------------+-------------
+         0     0% 98.46%    63.48MB   100%                | line3000
+                                           63.48MB   100% |   line3002 (inline)
+----------------------------------------------------------+-------------
+                                           63.48MB   100% |   line3000 (inline)
+         0     0% 98.46%    63.48MB   100%                | line3002
+                                           63.48MB   100% |   line2000
+----------------------------------------------------------+-------------

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.files.seconds.text

@@ -0,0 +1,2 @@
+Showing nodes accounting for 0, 0% of 0 total
+      flat  flat%   sum%        cum   cum%

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.files.text

@@ -0,0 +1,5 @@
+Showing nodes accounting for 93.75MB, 95.05% of 98.63MB total
+Dropped 1 node (cum <= 4.93MB)
+      flat  flat%   sum%        cum   cum%
+   62.50MB 63.37% 63.37%    63.48MB 64.36%  testdata/file2000.src
+   31.25MB 31.68% 95.05%    98.63MB   100%  testdata/file3000.src

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.files.text.focus

@@ -0,0 +1,8 @@
+Active filters:
+   focus=[12]00
+   taghide=[X3]00
+Showing nodes accounting for 67.38MB, 68.32% of 98.63MB total
+      flat  flat%   sum%        cum   cum%
+   62.50MB 63.37% 63.37%    63.48MB 64.36%  testdata/file2000.src
+    4.88MB  4.95% 68.32%     4.88MB  4.95%  testdata/file1000.src
+         0     0% 68.32%    67.38MB 68.32%  testdata/file3000.src

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.inuse_objects.text

@@ -0,0 +1,8 @@
+Showing nodes accounting for 150, 100% of 150 total
+      flat  flat%   sum%        cum   cum%
+        80 53.33% 53.33%        130 86.67%  line3002 (inline)
+        40 26.67% 80.00%         50 33.33%  line2001 (inline)
+        30 20.00%   100%         30 20.00%  line1000
+         0     0%   100%         50 33.33%  line2000
+         0     0%   100%        150   100%  line3000
+         0     0%   100%        110 73.33%  line3001 (inline)

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.inuse_space.dot.focus

@@ -0,0 +1,13 @@
+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: inuse_space\lActive filters:\l   tagfocus=1mb:2gb\lShowing nodes accounting for 62.50MB, 63.37% of 98.63MB total\l"] }
+N1 [label="line2001\n62.50MB (63.37%)" id="node1" fontsize=24 shape=box tooltip="line2001 (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
+NN1_0 [label = "1.56MB" id="NN1_0" fontsize=8 shape=box3d tooltip="62.50MB"]
+N1 -> NN1_0 [label=" 62.50MB" weight=100 tooltip="62.50MB" labeltooltip="62.50MB"]
+N2 [label="line3000\n0 of 62.50MB (63.37%)" id="node2" fontsize=8 shape=box tooltip="line3000 (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
+N3 [label="line2000\n0 of 62.50MB (63.37%)" id="node3" fontsize=8 shape=box tooltip="line2000 (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
+N4 [label="line3002\n0 of 62.50MB (63.37%)" id="node4" fontsize=8 shape=box tooltip="line3002 (62.50MB)" color="#b21600" fillcolor="#edd8d5"]
+N3 -> N1 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line2000 -> line2001 (62.50MB)" labeltooltip="line2000 -> line2001 (62.50MB)"]
+N2 -> N4 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line3000 -> line3002 (62.50MB)" labeltooltip="line3000 -> line3002 (62.50MB)"]
+N4 -> N3 [label=" 62.50MB" weight=64 penwidth=4 color="#b21600" tooltip="line3002 -> line2000 (62.50MB)" labeltooltip="line3002 -> line2000 (62.50MB)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.inuse_space.dot.focus.ignore

@@ -0,0 +1,16 @@
+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: inuse_space\lActive filters:\l   tagfocus=30kb:\l   tagignore=1mb:2mb\lShowing nodes accounting for 36.13MB, 36.63% of 98.63MB total\lDropped 2 nodes (cum <= 4.93MB)\l"] }
+N1 [label="line3002\n31.25MB (31.68%)\nof 32.23MB (32.67%)" id="node1" fontsize=24 shape=box tooltip="line3002 (32.23MB)" color="#b23200" fillcolor="#eddcd5"]
+NN1_0 [label = "400kB" id="NN1_0" fontsize=8 shape=box3d tooltip="31.25MB"]
+N1 -> NN1_0 [label=" 31.25MB" weight=100 tooltip="31.25MB" labeltooltip="31.25MB"]
+N2 [label="line3000\n0 of 36.13MB (36.63%)" id="node2" fontsize=8 shape=box tooltip="line3000 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+N3 [label="line3001\n0 of 36.13MB (36.63%)" id="node3" fontsize=8 shape=box tooltip="line3001 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+N4 [label="line1000\n4.88MB (4.95%)" id="node4" fontsize=15 shape=box tooltip="line1000 (4.88MB)" color="#b2a086" fillcolor="#edeae7"]
+NN4_0 [label = "200kB" id="NN4_0" fontsize=8 shape=box3d tooltip="3.91MB"]
+N4 -> NN4_0 [label=" 3.91MB" weight=100 tooltip="3.91MB" labeltooltip="3.91MB"]
+N2 -> N3 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 -> line3001 (36.13MB)" labeltooltip="line3000 -> line3001 (36.13MB)"]
+N3 -> N1 [label=" 32.23MB\n (inline)" weight=33 penwidth=2 color="#b23200" tooltip="line3001 -> line3002 (32.23MB)" labeltooltip="line3001 -> line3002 (32.23MB)"]
+N3 -> N4 [label=" 3.91MB" weight=4 color="#b2a58f" tooltip="line3001 -> line1000 (3.91MB)" labeltooltip="line3001 -> line1000 (3.91MB)"]
+N1 -> N4 [label=" 0.98MB" color="#b2b0a9" tooltip="line3002 ... line1000 (0.98MB)" labeltooltip="line3002 ... line1000 (0.98MB)" style="dotted" minlen=2]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.flat.lines.dot.focus

@@ -0,0 +1,21 @@
+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: inuse_space\lActive filters:\l   focus=[12]00\lShowing nodes accounting for 67.38MB, 68.32% of 98.63MB total\l"] }
+N1 [label="line3000\nfile3000.src:4\n0 of 67.38MB (68.32%)" id="node1" fontsize=8 shape=box tooltip="line3000 testdata/file3000.src:4 (67.38MB)" color="#b21300" fillcolor="#edd7d5"]
+N2 [label="line2001\nfile2000.src:2\n62.50MB (63.37%)\nof 63.48MB (64.36%)" id="node2" fontsize=24 shape=box tooltip="line2001 testdata/file2000.src:2 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+NN2_0 [label = "1.56MB" id="NN2_0" fontsize=8 shape=box3d tooltip="62.50MB"]
+N2 -> NN2_0 [label=" 62.50MB" weight=100 tooltip="62.50MB" labeltooltip="62.50MB"]
+N3 [label="line1000\nfile1000.src:1\n4.88MB (4.95%)" id="node3" fontsize=13 shape=box tooltip="line1000 testdata/file1000.src:1 (4.88MB)" color="#b2a086" fillcolor="#edeae7"]
+NN3_0 [label = "200kB" id="NN3_0" fontsize=8 shape=box3d tooltip="3.91MB"]
+N3 -> NN3_0 [label=" 3.91MB" weight=100 tooltip="3.91MB" labeltooltip="3.91MB"]
+N4 [label="line3002\nfile3000.src:3\n0 of 63.48MB (64.36%)" id="node4" fontsize=8 shape=box tooltip="line3002 testdata/file3000.src:3 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+N5 [label="line3001\nfile3000.src:2\n0 of 4.88MB (4.95%)" id="node5" fontsize=8 shape=box tooltip="line3001 testdata/file3000.src:2 (4.88MB)" color="#b2a086" fillcolor="#edeae7"]
+N6 [label="line2000\nfile2000.src:3\n0 of 63.48MB (64.36%)" id="node6" fontsize=8 shape=box tooltip="line2000 testdata/file2000.src:3 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+N6 -> N2 [label=" 63.48MB\n (inline)" weight=65 penwidth=4 color="#b21600" tooltip="line2000 testdata/file2000.src:3 -> line2001 testdata/file2000.src:2 (63.48MB)" labeltooltip="line2000 testdata/file2000.src:3 -> line2001 testdata/file2000.src:2 (63.48MB)"]
+N4 -> N6 [label=" 63.48MB" weight=65 penwidth=4 color="#b21600" tooltip="line3002 testdata/file3000.src:3 -> line2000 testdata/file2000.src:3 (63.48MB)" labeltooltip="line3002 testdata/file3000.src:3 -> line2000 testdata/file2000.src:3 (63.48MB)"]
+N1 -> N4 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line3000 testdata/file3000.src:4 -> line3002 testdata/file3000.src:3 (62.50MB)" labeltooltip="line3000 testdata/file3000.src:4 -> line3002 testdata/file3000.src:3 (62.50MB)"]
+N1 -> N5 [label=" 4.88MB\n (inline)" weight=5 color="#b2a086" tooltip="line3000 testdata/file3000.src:4 -> line3001 testdata/file3000.src:2 (4.88MB)" labeltooltip="line3000 testdata/file3000.src:4 -> line3001 testdata/file3000.src:2 (4.88MB)"]
+N5 -> N3 [label=" 3.91MB" weight=4 color="#b2a58f" tooltip="line3001 testdata/file3000.src:2 -> line1000 testdata/file1000.src:1 (3.91MB)" labeltooltip="line3001 testdata/file3000.src:2 -> line1000 testdata/file1000.src:1 (3.91MB)"]
+N2 -> N3 [label=" 0.98MB" color="#b2b0a9" tooltip="line2001 testdata/file2000.src:2 -> line1000 testdata/file1000.src:1 (0.98MB)" labeltooltip="line2001 testdata/file2000.src:2 -> line1000 testdata/file1000.src:1 (0.98MB)" minlen=2]
+N5 -> N4 [label=" 0.98MB\n (inline)" color="#b2b0a9" tooltip="line3001 testdata/file3000.src:2 -> line3002 testdata/file3000.src:3 (0.98MB)" labeltooltip="line3001 testdata/file3000.src:2 -> line3002 testdata/file3000.src:3 (0.98MB)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.tags

@@ -0,0 +1,6 @@
+ bytes: Total 98.6MB
+          62.5MB (63.37%): 1.56MB
+          31.2MB (31.68%): 400kB
+           3.9MB ( 3.96%): 200kB
+        1000.0kB ( 0.99%): 100kB
+

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap.tags.unit

@@ -0,0 +1,6 @@
+ bytes: Total 103424000.0B
+        65536000.0B (63.37%): 1638400B
+        32768000.0B (31.68%): 409600B
+         4096000.0B ( 3.96%): 204800B
+         1024000.0B ( 0.99%): 102400B
+

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_alloc.flat.alloc_objects.text

@@ -0,0 +1,8 @@
+Showing nodes accounting for 150, 100% of 150 total
+      flat  flat%   sum%        cum   cum%
+        80 53.33% 53.33%        130 86.67%  line3002 (inline)
+        40 26.67% 80.00%         50 33.33%  line2001 (inline)
+        30 20.00%   100%         30 20.00%  line1000
+         0     0%   100%         50 33.33%  line2000
+         0     0%   100%        150   100%  line3000
+         0     0%   100%        110 73.33%  line3001 (inline)

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_alloc.flat.alloc_space.dot

@@ -0,0 +1,14 @@
+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: alloc_space\lActive filters:\l   tagshow=[2]00\lShowing nodes accounting for 93.75MB, 95.05% of 98.63MB total\lDropped 1 node (cum <= 4.93MB)\l"] }
+N1 [label="line3002\n31.25MB (31.68%)\nof 94.73MB (96.04%)" id="node1" fontsize=20 shape=box tooltip="line3002 (94.73MB)" color="#b20200" fillcolor="#edd5d5"]
+N2 [label="line3000\n0 of 98.63MB (100%)" id="node2" fontsize=8 shape=box tooltip="line3000 (98.63MB)" color="#b20000" fillcolor="#edd5d5"]
+N3 [label="line2001\n62.50MB (63.37%)\nof 63.48MB (64.36%)" id="node3" fontsize=24 shape=box tooltip="line2001 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+N4 [label="line2000\n0 of 63.48MB (64.36%)" id="node4" fontsize=8 shape=box tooltip="line2000 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+N5 [label="line3001\n0 of 36.13MB (36.63%)" id="node5" fontsize=8 shape=box tooltip="line3001 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+N4 -> N3 [label=" 63.48MB\n (inline)" weight=65 penwidth=4 color="#b21600" tooltip="line2000 -> line2001 (63.48MB)" labeltooltip="line2000 -> line2001 (63.48MB)"]
+N1 -> N4 [label=" 63.48MB" weight=65 penwidth=4 color="#b21600" tooltip="line3002 -> line2000 (63.48MB)" labeltooltip="line3002 -> line2000 (63.48MB)"]
+N2 -> N1 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line3000 -> line3002 (62.50MB)" labeltooltip="line3000 -> line3002 (62.50MB)"]
+N2 -> N5 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 -> line3001 (36.13MB)" labeltooltip="line3000 -> line3001 (36.13MB)"]
+N5 -> N1 [label=" 32.23MB\n (inline)" weight=33 penwidth=2 color="#b23200" tooltip="line3001 -> line3002 (32.23MB)" labeltooltip="line3001 -> line3002 (32.23MB)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_alloc.flat.alloc_space.dot.focus

@@ -0,0 +1,18 @@
+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: alloc_space\lActive filters:\l   focus=[234]00\lShowing nodes accounting for 93.75MB, 95.05% of 98.63MB total\lDropped 1 node (cum <= 4.93MB)\l"] }
+N1 [label="line3002\n31.25MB (31.68%)\nof 94.73MB (96.04%)" id="node1" fontsize=20 shape=box tooltip="line3002 (94.73MB)" color="#b20200" fillcolor="#edd5d5"]
+NN1_0 [label = "400kB" id="NN1_0" fontsize=8 shape=box3d tooltip="31.25MB"]
+N1 -> NN1_0 [label=" 31.25MB" weight=100 tooltip="31.25MB" labeltooltip="31.25MB"]
+N2 [label="line3000\n0 of 98.63MB (100%)" id="node2" fontsize=8 shape=box tooltip="line3000 (98.63MB)" color="#b20000" fillcolor="#edd5d5"]
+N3 [label="line2001\n62.50MB (63.37%)\nof 63.48MB (64.36%)" id="node3" fontsize=24 shape=box tooltip="line2001 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+NN3_0 [label = "1.56MB" id="NN3_0" fontsize=8 shape=box3d tooltip="62.50MB"]
+N3 -> NN3_0 [label=" 62.50MB" weight=100 tooltip="62.50MB" labeltooltip="62.50MB"]
+N4 [label="line2000\n0 of 63.48MB (64.36%)" id="node4" fontsize=8 shape=box tooltip="line2000 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+N5 [label="line3001\n0 of 36.13MB (36.63%)" id="node5" fontsize=8 shape=box tooltip="line3001 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+N4 -> N3 [label=" 63.48MB\n (inline)" weight=65 penwidth=4 color="#b21600" tooltip="line2000 -> line2001 (63.48MB)" labeltooltip="line2000 -> line2001 (63.48MB)"]
+N1 -> N4 [label=" 63.48MB" weight=65 penwidth=4 color="#b21600" tooltip="line3002 -> line2000 (63.48MB)" labeltooltip="line3002 -> line2000 (63.48MB)" minlen=2]
+N2 -> N1 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line3000 -> line3002 (62.50MB)" labeltooltip="line3000 -> line3002 (62.50MB)"]
+N2 -> N5 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 -> line3001 (36.13MB)" labeltooltip="line3000 -> line3001 (36.13MB)"]
+N5 -> N1 [label=" 32.23MB\n (inline)" weight=33 penwidth=2 color="#b23200" tooltip="line3001 -> line3002 (32.23MB)" labeltooltip="line3001 -> line3002 (32.23MB)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_alloc.flat.alloc_space.dot.hide

@@ -0,0 +1,11 @@
+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: alloc_space\lActive filters:\l   hide=line.*1?23?\lShowing nodes accounting for 93.75MB, 95.05% of 98.63MB total\lDropped 1 node (cum <= 4.93MB)\l"] }
+N1 [label="line3000\n62.50MB (63.37%)\nof 98.63MB (100%)" id="node1" fontsize=24 shape=box tooltip="line3000 (98.63MB)" color="#b20000" fillcolor="#edd5d5"]
+NN1_0 [label = "1.56MB" id="NN1_0" fontsize=8 shape=box3d tooltip="62.50MB"]
+N1 -> NN1_0 [label=" 62.50MB" weight=100 tooltip="62.50MB" labeltooltip="62.50MB"]
+N2 [label="line3001\n31.25MB (31.68%)\nof 36.13MB (36.63%)" id="node2" fontsize=20 shape=box tooltip="line3001 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+NN2_0 [label = "400kB" id="NN2_0" fontsize=8 shape=box3d tooltip="31.25MB"]
+N2 -> NN2_0 [label=" 31.25MB" weight=100 tooltip="31.25MB" labeltooltip="31.25MB"]
+N1 -> N2 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 -> line3001 (36.13MB)" labeltooltip="line3000 -> line3001 (36.13MB)" minlen=2]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_request.tags.focus

@@ -0,0 +1,8 @@
+ bytes: Total 93.8MB
+        62.5MB (66.67%): 1.56MB
+        31.2MB (33.33%): 400kB
+
+ request: Total 93.8MB
+          62.5MB (66.67%): 1.56MB
+          31.2MB (33.33%): 400kB
+

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_sizetags.dot

@@ -0,0 +1,30 @@
+digraph "unnamed" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "Build ID: buildid" [shape=box fontsize=16 label="Build ID: buildid\lcomment\lType: inuse_space\lShowing nodes accounting for 93.75MB, 95.05% of 98.63MB total\lDropped 1 node (cum <= 4.93MB)\l"] }
+N1 [label="line3002\n31.25MB (31.68%)\nof 94.73MB (96.04%)" id="node1" fontsize=20 shape=box tooltip="line3002 (94.73MB)" color="#b20200" fillcolor="#edd5d5"]
+NN1_0 [label = "16B..64B" id="NN1_0" fontsize=8 shape=box3d tooltip="93.75MB"]
+N1 -> NN1_0 [label=" 93.75MB" weight=100 tooltip="93.75MB" labeltooltip="93.75MB"]
+NN1_1 [label = "2B..8B" id="NN1_1" fontsize=8 shape=box3d tooltip="93.75MB"]
+N1 -> NN1_1 [label=" 93.75MB" weight=100 tooltip="93.75MB" labeltooltip="93.75MB"]
+NN1_2 [label = "256B..1.56MB" id="NN1_2" fontsize=8 shape=box3d tooltip="62.50MB"]
+N1 -> NN1_2 [label=" 62.50MB" weight=100 tooltip="62.50MB" labeltooltip="62.50MB"]
+NN1_3 [label = "128B" id="NN1_3" fontsize=8 shape=box3d tooltip="31.25MB"]
+N1 -> NN1_3 [label=" 31.25MB" weight=100 tooltip="31.25MB" labeltooltip="31.25MB"]
+N2 [label="line3000\n0 of 98.63MB (100%)" id="node2" fontsize=8 shape=box tooltip="line3000 (98.63MB)" color="#b20000" fillcolor="#edd5d5"]
+N3 [label="line2001\n62.50MB (63.37%)\nof 63.48MB (64.36%)" id="node3" fontsize=24 shape=box tooltip="line2001 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+NN3_0 [label = "16B..64B" id="NN3_0" fontsize=8 shape=box3d tooltip="190.43MB"]
+N3 -> NN3_0 [label=" 190.43MB" weight=100 tooltip="190.43MB" labeltooltip="190.43MB" style="dotted"]
+NN3_1 [label = "2B..8B" id="NN3_1" fontsize=8 shape=box3d tooltip="190.43MB"]
+N3 -> NN3_1 [label=" 190.43MB" weight=100 tooltip="190.43MB" labeltooltip="190.43MB" style="dotted"]
+NN3_2 [label = "256B..1.56MB" id="NN3_2" fontsize=8 shape=box3d tooltip="125.98MB"]
+N3 -> NN3_2 [label=" 125.98MB" weight=100 tooltip="125.98MB" labeltooltip="125.98MB" style="dotted"]
+NN3_3 [label = "128B" id="NN3_3" fontsize=8 shape=box3d tooltip="63.48MB"]
+N3 -> NN3_3 [label=" 63.48MB" weight=100 tooltip="63.48MB" labeltooltip="63.48MB" style="dotted"]
+N4 [label="line2000\n0 of 63.48MB (64.36%)" id="node4" fontsize=8 shape=box tooltip="line2000 (63.48MB)" color="#b21600" fillcolor="#edd8d5"]
+N5 [label="line3001\n0 of 36.13MB (36.63%)" id="node5" fontsize=8 shape=box tooltip="line3001 (36.13MB)" color="#b22e00" fillcolor="#eddbd5"]
+N4 -> N3 [label=" 63.48MB\n (inline)" weight=65 penwidth=4 color="#b21600" tooltip="line2000 -> line2001 (63.48MB)" labeltooltip="line2000 -> line2001 (63.48MB)"]
+N1 -> N4 [label=" 63.48MB" weight=65 penwidth=4 color="#b21600" tooltip="line3002 -> line2000 (63.48MB)" labeltooltip="line3002 -> line2000 (63.48MB)" minlen=2]
+N2 -> N1 [label=" 62.50MB\n (inline)" weight=64 penwidth=4 color="#b21600" tooltip="line3000 -> line3002 (62.50MB)" labeltooltip="line3000 -> line3002 (62.50MB)"]
+N2 -> N5 [label=" 36.13MB\n (inline)" weight=37 penwidth=2 color="#b22e00" tooltip="line3000 -> line3001 (36.13MB)" labeltooltip="line3000 -> line3001 (36.13MB)"]
+N5 -> N1 [label=" 32.23MB\n (inline)" weight=33 penwidth=2 color="#b23200" tooltip="line3001 -> line3002 (32.23MB)" labeltooltip="line3001 -> line3002 (32.23MB)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.heap_tags.traces

@@ -0,0 +1,32 @@
+Build ID: buildid
+comment
+Type: inuse_space
+-----------+-------------------------------------------------------
+      key1:  tag
+     bytes:  100kB
+   request:  100kB
+    1000kB   line1000
+             line2001
+             line2000
+             line3002
+             line3001
+             line3000
+-----------+-------------------------------------------------------
+     bytes:  200kB
+    3.91MB   line1000
+             line3001
+             line3000
+-----------+-------------------------------------------------------
+      key1:  tag
+     bytes:  1.56MB
+   request:  1.56MB
+   62.50MB   line2001
+             line2000
+             line3002
+             line3000
+-----------+-------------------------------------------------------
+     bytes:  400kB
+   31.25MB   line3002
+             line3001
+             line3000
+-----------+-------------------------------------------------------

vendor/github.com/google/pprof/internal/driver/testdata/pprof.longNameFuncs.dot

@@ -0,0 +1,9 @@
+digraph "testbinary" {
+node [style=filled fillcolor="#f8f8f8"]
+subgraph cluster_L { "File: testbinary" [shape=box fontsize=16 label="File: testbinary\lType: cpu\lDuration: 10s, Total samples = 1.11s (11.10%)\lShowing nodes accounting for 1.11s, 100% of 1.11s total\l" tooltip="testbinary"] }
+N1 [label="package1\nobject\nfunction1\n1.10s (99.10%)" id="node1" fontsize=24 shape=box tooltip="path/to/package1.object.function1 (1.10s)" color="#b20000" fillcolor="#edd5d5"]
+N2 [label="FooBar\nrun\n0.01s (0.9%)\nof 1.01s (90.99%)" id="node2" fontsize=10 shape=box tooltip="java.bar.foo.FooBar.run(java.lang.Runnable) (1.01s)" color="#b20400" fillcolor="#edd6d5"]
+N3 [label="Bar\nFoo\n0 of 1.10s (99.10%)" id="node3" fontsize=8 shape=box tooltip="(anonymous namespace)::Bar::Foo (1.10s)" color="#b20000" fillcolor="#edd5d5"]
+N3 -> N1 [label=" 1.10s" weight=100 penwidth=5 color="#b20000" tooltip="(anonymous namespace)::Bar::Foo -> path/to/package1.object.function1 (1.10s)" labeltooltip="(anonymous namespace)::Bar::Foo -> path/to/package1.object.function1 (1.10s)"]
+N2 -> N3 [label=" 1s" weight=91 penwidth=5 color="#b20500" tooltip="java.bar.foo.FooBar.run(java.lang.Runnable) -> (anonymous namespace)::Bar::Foo (1s)" labeltooltip="java.bar.foo.FooBar.run(java.lang.Runnable) -> (anonymous namespace)::Bar::Foo (1s)"]
+}

vendor/github.com/google/pprof/internal/driver/testdata/pprof.longNameFuncs.text

@@ -0,0 +1,5 @@
+Showing nodes accounting for 1.11s, 100% of 1.11s total
+      flat  flat%   sum%        cum   cum%
+     1.10s 99.10% 99.10%      1.10s 99.10%  path/to/package1.object.function1
+     0.01s   0.9%   100%      1.01s 90.99%  java.bar.foo.FooBar.run(java.lang.Runnable)
+         0     0%   100%      1.10s 99.10%  (anonymous namespace)::Bar::Foo

vendor/github.com/google/pprof/internal/driver/testdata/pprof.unknown.flat.functions.call_tree.text

@@ -0,0 +1,8 @@
+Showing nodes accounting for 1.12s, 100% of 1.12s total
+Showing top 5 nodes out of 6
+      flat  flat%   sum%        cum   cum%
+     1.10s 98.21% 98.21%      1.10s 98.21%  line1000
+     0.01s  0.89% 99.11%      1.01s 90.18%  line2001 (inline)
+     0.01s  0.89%   100%      1.02s 91.07%  line3002 (inline)
+         0     0%   100%      1.01s 90.18%  line2000
+         0     0%   100%      1.12s   100%  line3000

vendor/github.com/google/pprof/internal/driver/webui.go

@@ -0,0 +1,439 @@
+// Copyright 2017 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"bytes"
+	"fmt"
+	"html/template"
+	"net"
+	"net/http"
+	gourl "net/url"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/google/pprof/internal/graph"
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/internal/report"
+	"github.com/google/pprof/profile"
+)
+
+// webInterface holds the state needed for serving a browser based interface.
+type webInterface struct {
+	prof      *profile.Profile
+	options   *plugin.Options
+	help      map[string]string
+	templates *template.Template
+}
+
+func makeWebInterface(p *profile.Profile, opt *plugin.Options) *webInterface {
+	templates := template.New("templategroup")
+	addTemplates(templates)
+	report.AddSourceTemplates(templates)
+	return &webInterface{
+		prof:      p,
+		options:   opt,
+		help:      make(map[string]string),
+		templates: templates,
+	}
+}
+
+// maxEntries is the maximum number of entries to print for text interfaces.
+const maxEntries = 50
+
+// errorCatcher is a UI that captures errors for reporting to the browser.
+type errorCatcher struct {
+	plugin.UI
+	errors []string
+}
+
+func (ec *errorCatcher) PrintErr(args ...interface{}) {
+	ec.errors = append(ec.errors, strings.TrimSuffix(fmt.Sprintln(args...), "\n"))
+	ec.UI.PrintErr(args...)
+}
+
+// webArgs contains arguments passed to templates in webhtml.go.
+type webArgs struct {
+	Title       string
+	Errors      []string
+	Total       int64
+	SampleTypes []string
+	Legend      []string
+	Help        map[string]string
+	Nodes       []string
+	HTMLBody    template.HTML
+	TextBody    string
+	Top         []report.TextItem
+	FlameGraph  template.JS
+}
+
+func serveWebInterface(hostport string, p *profile.Profile, o *plugin.Options, disableBrowser bool) error {
+	host, port, err := getHostAndPort(hostport)
+	if err != nil {
+		return err
+	}
+	interactiveMode = true
+	ui := makeWebInterface(p, o)
+	for n, c := range pprofCommands {
+		ui.help[n] = c.description
+	}
+	for n, v := range pprofVariables {
+		ui.help[n] = v.help
+	}
+	ui.help["details"] = "Show information about the profile and this view"
+	ui.help["graph"] = "Display profile as a directed graph"
+	ui.help["reset"] = "Show the entire profile"
+
+	server := o.HTTPServer
+	if server == nil {
+		server = defaultWebServer
+	}
+	args := &plugin.HTTPServerArgs{
+		Hostport: net.JoinHostPort(host, strconv.Itoa(port)),
+		Host:     host,
+		Port:     port,
+		Handlers: map[string]http.Handler{
+			"/":           http.HandlerFunc(ui.dot),
+			"/top":        http.HandlerFunc(ui.top),
+			"/disasm":     http.HandlerFunc(ui.disasm),
+			"/source":     http.HandlerFunc(ui.source),
+			"/peek":       http.HandlerFunc(ui.peek),
+			"/flamegraph": http.HandlerFunc(ui.flamegraph),
+		},
+	}
+
+	url := "http://" + args.Hostport
+
+	o.UI.Print("Serving web UI on ", url)
+
+	if o.UI.WantBrowser() && !disableBrowser {
+		go openBrowser(url, o)
+	}
+	return server(args)
+}
+
+func getHostAndPort(hostport string) (string, int, error) {
+	host, portStr, err := net.SplitHostPort(hostport)
+	if err != nil {
+		return "", 0, fmt.Errorf("could not split http address: %v", err)
+	}
+	if host == "" {
+		host = "localhost"
+	}
+	var port int
+	if portStr == "" {
+		ln, err := net.Listen("tcp", net.JoinHostPort(host, "0"))
+		if err != nil {
+			return "", 0, fmt.Errorf("could not generate random port: %v", err)
+		}
+		port = ln.Addr().(*net.TCPAddr).Port
+		err = ln.Close()
+		if err != nil {
+			return "", 0, fmt.Errorf("could not generate random port: %v", err)
+		}
+	} else {
+		port, err = strconv.Atoi(portStr)
+		if err != nil {
+			return "", 0, fmt.Errorf("invalid port number: %v", err)
+		}
+	}
+	return host, port, nil
+}
+func defaultWebServer(args *plugin.HTTPServerArgs) error {
+	ln, err := net.Listen("tcp", args.Hostport)
+	if err != nil {
+		return err
+	}
+	isLocal := isLocalhost(args.Host)
+	handler := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+		if isLocal {
+			// Only allow local clients
+			host, _, err := net.SplitHostPort(req.RemoteAddr)
+			if err != nil || !isLocalhost(host) {
+				http.Error(w, "permission denied", http.StatusForbidden)
+				return
+			}
+		}
+		h := args.Handlers[req.URL.Path]
+		if h == nil {
+			// Fall back to default behavior
+			h = http.DefaultServeMux
+		}
+		h.ServeHTTP(w, req)
+	})
+
+	// We serve the ui at /ui/ and redirect there from the root. This is done
+	// to surface any problems with serving the ui at a non-root early. See:
+	//
+	// https://github.com/google/pprof/pull/348
+	mux := http.NewServeMux()
+	mux.Handle("/ui/", http.StripPrefix("/ui", handler))
+	mux.Handle("/", redirectWithQuery("/ui"))
+	s := &http.Server{Handler: mux}
+	return s.Serve(ln)
+}
+
+func redirectWithQuery(path string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		pathWithQuery := &gourl.URL{Path: path, RawQuery: r.URL.RawQuery}
+		http.Redirect(w, r, pathWithQuery.String(), http.StatusTemporaryRedirect)
+	}
+}
+
+func isLocalhost(host string) bool {
+	for _, v := range []string{"localhost", "127.0.0.1", "[::1]", "::1"} {
+		if host == v {
+			return true
+		}
+	}
+	return false
+}
+
+func openBrowser(url string, o *plugin.Options) {
+	// Construct URL.
+	u, _ := gourl.Parse(url)
+	q := u.Query()
+	for _, p := range []struct{ param, key string }{
+		{"f", "focus"},
+		{"s", "show"},
+		{"sf", "show_from"},
+		{"i", "ignore"},
+		{"h", "hide"},
+		{"si", "sample_index"},
+	} {
+		if v := pprofVariables[p.key].value; v != "" {
+			q.Set(p.param, v)
+		}
+	}
+	u.RawQuery = q.Encode()
+
+	// Give server a little time to get ready.
+	time.Sleep(time.Millisecond * 500)
+
+	for _, b := range browsers() {
+		args := strings.Split(b, " ")
+		if len(args) == 0 {
+			continue
+		}
+		viewer := exec.Command(args[0], append(args[1:], u.String())...)
+		viewer.Stderr = os.Stderr
+		if err := viewer.Start(); err == nil {
+			return
+		}
+	}
+	// No visualizer succeeded, so just print URL.
+	o.UI.PrintErr(u.String())
+}
+
+func varsFromURL(u *gourl.URL) variables {
+	vars := pprofVariables.makeCopy()
+	vars["focus"].value = u.Query().Get("f")
+	vars["show"].value = u.Query().Get("s")
+	vars["show_from"].value = u.Query().Get("sf")
+	vars["ignore"].value = u.Query().Get("i")
+	vars["hide"].value = u.Query().Get("h")
+	vars["sample_index"].value = u.Query().Get("si")
+	return vars
+}
+
+// makeReport generates a report for the specified command.
+func (ui *webInterface) makeReport(w http.ResponseWriter, req *http.Request,
+	cmd []string, vars ...string) (*report.Report, []string) {
+	v := varsFromURL(req.URL)
+	for i := 0; i+1 < len(vars); i += 2 {
+		v[vars[i]].value = vars[i+1]
+	}
+	catcher := &errorCatcher{UI: ui.options.UI}
+	options := *ui.options
+	options.UI = catcher
+	_, rpt, err := generateRawReport(ui.prof, cmd, v, &options)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		ui.options.UI.PrintErr(err)
+		return nil, nil
+	}
+	return rpt, catcher.errors
+}
+
+// render generates html using the named template based on the contents of data.
+func (ui *webInterface) render(w http.ResponseWriter, tmpl string,
+	rpt *report.Report, errList, legend []string, data webArgs) {
+	file := getFromLegend(legend, "File: ", "unknown")
+	profile := getFromLegend(legend, "Type: ", "unknown")
+	data.Title = file + " " + profile
+	data.Errors = errList
+	data.Total = rpt.Total()
+	data.SampleTypes = sampleTypes(ui.prof)
+	data.Legend = legend
+	data.Help = ui.help
+	html := &bytes.Buffer{}
+	if err := ui.templates.ExecuteTemplate(html, tmpl, data); err != nil {
+		http.Error(w, "internal template error", http.StatusInternalServerError)
+		ui.options.UI.PrintErr(err)
+		return
+	}
+	w.Header().Set("Content-Type", "text/html")
+	w.Write(html.Bytes())
+}
+
+// dot generates a web page containing an svg diagram.
+func (ui *webInterface) dot(w http.ResponseWriter, req *http.Request) {
+	rpt, errList := ui.makeReport(w, req, []string{"svg"})
+	if rpt == nil {
+		return // error already reported
+	}
+
+	// Generate dot graph.
+	g, config := report.GetDOT(rpt)
+	legend := config.Labels
+	config.Labels = nil
+	dot := &bytes.Buffer{}
+	graph.ComposeDot(dot, g, &graph.DotAttributes{}, config)
+
+	// Convert to svg.
+	svg, err := dotToSvg(dot.Bytes())
+	if err != nil {
+		http.Error(w, "Could not execute dot; may need to install graphviz.",
+			http.StatusNotImplemented)
+		ui.options.UI.PrintErr("Failed to execute dot. Is Graphviz installed?\n", err)
+		return
+	}
+
+	// Get all node names into an array.
+	nodes := []string{""} // dot starts with node numbered 1
+	for _, n := range g.Nodes {
+		nodes = append(nodes, n.Info.Name)
+	}
+
+	ui.render(w, "graph", rpt, errList, legend, webArgs{
+		HTMLBody: template.HTML(string(svg)),
+		Nodes:    nodes,
+	})
+}
+
+func dotToSvg(dot []byte) ([]byte, error) {
+	cmd := exec.Command("dot", "-Tsvg")
+	out := &bytes.Buffer{}
+	cmd.Stdin, cmd.Stdout, cmd.Stderr = bytes.NewBuffer(dot), out, os.Stderr
+	if err := cmd.Run(); err != nil {
+		return nil, err
+	}
+
+	// Fix dot bug related to unquoted amperands.
+	svg := bytes.Replace(out.Bytes(), []byte("&;"), []byte("&amp;;"), -1)
+
+	// Cleanup for embedding by dropping stuff before the <svg> start.
+	if pos := bytes.Index(svg, []byte("<svg")); pos >= 0 {
+		svg = svg[pos:]
+	}
+	return svg, nil
+}
+
+func (ui *webInterface) top(w http.ResponseWriter, req *http.Request) {
+	rpt, errList := ui.makeReport(w, req, []string{"top"}, "nodecount", "500")
+	if rpt == nil {
+		return // error already reported
+	}
+	top, legend := report.TextItems(rpt)
+	var nodes []string
+	for _, item := range top {
+		nodes = append(nodes, item.Name)
+	}
+
+	ui.render(w, "top", rpt, errList, legend, webArgs{
+		Top:   top,
+		Nodes: nodes,
+	})
+}
+
+// disasm generates a web page containing disassembly.
+func (ui *webInterface) disasm(w http.ResponseWriter, req *http.Request) {
+	args := []string{"disasm", req.URL.Query().Get("f")}
+	rpt, errList := ui.makeReport(w, req, args)
+	if rpt == nil {
+		return // error already reported
+	}
+
+	out := &bytes.Buffer{}
+	if err := report.PrintAssembly(out, rpt, ui.options.Obj, maxEntries); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		ui.options.UI.PrintErr(err)
+		return
+	}
+
+	legend := report.ProfileLabels(rpt)
+	ui.render(w, "plaintext", rpt, errList, legend, webArgs{
+		TextBody: out.String(),
+	})
+
+}
+
+// source generates a web page containing source code annotated with profile
+// data.
+func (ui *webInterface) source(w http.ResponseWriter, req *http.Request) {
+	args := []string{"weblist", req.URL.Query().Get("f")}
+	rpt, errList := ui.makeReport(w, req, args)
+	if rpt == nil {
+		return // error already reported
+	}
+
+	// Generate source listing.
+	var body bytes.Buffer
+	if err := report.PrintWebList(&body, rpt, ui.options.Obj, maxEntries); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		ui.options.UI.PrintErr(err)
+		return
+	}
+
+	legend := report.ProfileLabels(rpt)
+	ui.render(w, "sourcelisting", rpt, errList, legend, webArgs{
+		HTMLBody: template.HTML(body.String()),
+	})
+}
+
+// peek generates a web page listing callers/callers.
+func (ui *webInterface) peek(w http.ResponseWriter, req *http.Request) {
+	args := []string{"peek", req.URL.Query().Get("f")}
+	rpt, errList := ui.makeReport(w, req, args, "lines", "t")
+	if rpt == nil {
+		return // error already reported
+	}
+
+	out := &bytes.Buffer{}
+	if err := report.Generate(out, rpt, ui.options.Obj); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		ui.options.UI.PrintErr(err)
+		return
+	}
+
+	legend := report.ProfileLabels(rpt)
+	ui.render(w, "plaintext", rpt, errList, legend, webArgs{
+		TextBody: out.String(),
+	})
+}
+
+// getFromLegend returns the suffix of an entry in legend that starts
+// with param.  It returns def if no such entry is found.
+func getFromLegend(legend []string, param, def string) string {
+	for _, s := range legend {
+		if strings.HasPrefix(s, param) {
+			return s[len(param):]
+		}
+	}
+	return def
+}

vendor/github.com/google/pprof/internal/driver/webui_test.go

@@ -0,0 +1,285 @@
+// Copyright 2017 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package driver
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"os/exec"
+	"regexp"
+	"runtime"
+	"sync"
+	"testing"
+
+	"github.com/google/pprof/internal/plugin"
+	"github.com/google/pprof/internal/proftest"
+	"github.com/google/pprof/profile"
+)
+
+func TestWebInterface(t *testing.T) {
+	if runtime.GOOS == "nacl" || runtime.GOOS == "js" {
+		t.Skip("test assumes tcp available")
+	}
+
+	prof := makeFakeProfile()
+
+	// Custom http server creator
+	var server *httptest.Server
+	serverCreated := make(chan bool)
+	creator := func(a *plugin.HTTPServerArgs) error {
+		server = httptest.NewServer(http.HandlerFunc(
+			func(w http.ResponseWriter, r *http.Request) {
+				if h := a.Handlers[r.URL.Path]; h != nil {
+					h.ServeHTTP(w, r)
+				}
+			}))
+		serverCreated <- true
+		return nil
+	}
+
+	// Start server and wait for it to be initialized
+	go serveWebInterface("unused:1234", prof, &plugin.Options{
+		Obj:        fakeObjTool{},
+		UI:         &proftest.TestUI{},
+		HTTPServer: creator,
+	}, false)
+	<-serverCreated
+	defer server.Close()
+
+	haveDot := false
+	if _, err := exec.LookPath("dot"); err == nil {
+		haveDot = true
+	}
+
+	type testCase struct {
+		path    string
+		want    []string
+		needDot bool
+	}
+	testcases := []testCase{
+		{"/", []string{"F1", "F2", "F3", "testbin", "cpu"}, true},
+		{"/top", []string{`"Name":"F2","InlineLabel":"","Flat":200,"Cum":300,"FlatFormat":"200ms","CumFormat":"300ms"}`}, false},
+		{"/source?f=" + url.QueryEscape("F[12]"),
+			[]string{"F1", "F2", "300ms +line1"}, false},
+		{"/peek?f=" + url.QueryEscape("F[12]"),
+			[]string{"300ms.*F1", "200ms.*300ms.*F2"}, false},
+		{"/disasm?f=" + url.QueryEscape("F[12]"),
+			[]string{"f1:asm", "f2:asm"}, false},
+		{"/flamegraph", []string{"File: testbin", "\"n\":\"root\"", "\"n\":\"F1\"", "var flamegraph = function", "function hierarchy"}, false},
+	}
+	for _, c := range testcases {
+		if c.needDot && !haveDot {
+			t.Log("skipping", c.path, "since dot (graphviz) does not seem to be installed")
+			continue
+		}
+
+		res, err := http.Get(server.URL + c.path)
+		if err != nil {
+			t.Error("could not fetch", c.path, err)
+			continue
+		}
+		data, err := ioutil.ReadAll(res.Body)
+		if err != nil {
+			t.Error("could not read response", c.path, err)
+			continue
+		}
+		result := string(data)
+		for _, w := range c.want {
+			if match, _ := regexp.MatchString(w, result); !match {
+				t.Errorf("response for %s does not match "+
+					"expected pattern '%s'; "+
+					"actual result:\n%s", c.path, w, result)
+			}
+		}
+	}
+
+	// Also fetch all the test case URLs in parallel to test thread
+	// safety when run under the race detector.
+	var wg sync.WaitGroup
+	for _, c := range testcases {
+		if c.needDot && !haveDot {
+			continue
+		}
+		path := server.URL + c.path
+		for count := 0; count < 2; count++ {
+			wg.Add(1)
+			go func() {
+				defer wg.Done()
+				res, err := http.Get(path)
+				if err != nil {
+					t.Error("could not fetch", c.path, err)
+					return
+				}
+				if _, err = ioutil.ReadAll(res.Body); err != nil {
+					t.Error("could not read response", c.path, err)
+				}
+			}()
+		}
+	}
+	wg.Wait()
+}
+
+// Implement fake object file support.
+
+const addrBase = 0x1000
+const fakeSource = "testdata/file1000.src"
+
+type fakeObj struct{}
+
+func (f fakeObj) Close() error    { return nil }
+func (f fakeObj) Name() string    { return "testbin" }
+func (f fakeObj) Base() uint64    { return 0 }
+func (f fakeObj) BuildID() string { return "" }
+func (f fakeObj) SourceLine(addr uint64) ([]plugin.Frame, error) {
+	return nil, fmt.Errorf("SourceLine unimplemented")
+}
+func (f fakeObj) Symbols(r *regexp.Regexp, addr uint64) ([]*plugin.Sym, error) {
+	return []*plugin.Sym{
+		{
+			Name: []string{"F1"}, File: fakeSource,
+			Start: addrBase, End: addrBase + 10,
+		},
+		{
+			Name: []string{"F2"}, File: fakeSource,
+			Start: addrBase + 10, End: addrBase + 20,
+		},
+		{
+			Name: []string{"F3"}, File: fakeSource,
+			Start: addrBase + 20, End: addrBase + 30,
+		},
+	}, nil
+}
+
+type fakeObjTool struct{}
+
+func (obj fakeObjTool) Open(file string, start, limit, offset uint64) (plugin.ObjFile, error) {
+	return fakeObj{}, nil
+}
+
+func (obj fakeObjTool) Disasm(file string, start, end uint64) ([]plugin.Inst, error) {
+	return []plugin.Inst{
+		{Addr: addrBase + 0, Text: "f1:asm", Function: "F1"},
+		{Addr: addrBase + 10, Text: "f2:asm", Function: "F2"},
+		{Addr: addrBase + 20, Text: "d3:asm", Function: "F3"},
+	}, nil
+}
+
+func makeFakeProfile() *profile.Profile {
+	// Three functions: F1, F2, F3 with three lines, 11, 22, 33.
+	funcs := []*profile.Function{
+		{ID: 1, Name: "F1", Filename: fakeSource, StartLine: 3},
+		{ID: 2, Name: "F2", Filename: fakeSource, StartLine: 5},
+		{ID: 3, Name: "F3", Filename: fakeSource, StartLine: 7},
+	}
+	lines := []profile.Line{
+		{Function: funcs[0], Line: 11},
+		{Function: funcs[1], Line: 22},
+		{Function: funcs[2], Line: 33},
+	}
+	mapping := []*profile.Mapping{
+		{
+			ID:             1,
+			Start:          addrBase,
+			Limit:          addrBase + 10,
+			Offset:         0,
+			File:           "testbin",
+			HasFunctions:   true,
+			HasFilenames:   true,
+			HasLineNumbers: true,
+		},
+	}
+
+	// Three interesting addresses: base+{10,20,30}
+	locs := []*profile.Location{
+		{ID: 1, Address: addrBase + 10, Line: lines[0:1], Mapping: mapping[0]},
+		{ID: 2, Address: addrBase + 20, Line: lines[1:2], Mapping: mapping[0]},
+		{ID: 3, Address: addrBase + 30, Line: lines[2:3], Mapping: mapping[0]},
+	}
+
+	// Two stack traces.
+	return &profile.Profile{
+		PeriodType:    &profile.ValueType{Type: "cpu", Unit: "milliseconds"},
+		Period:        1,
+		DurationNanos: 10e9,
+		SampleType: []*profile.ValueType{
+			{Type: "cpu", Unit: "milliseconds"},
+		},
+		Sample: []*profile.Sample{
+			{
+				Location: []*profile.Location{locs[2], locs[1], locs[0]},
+				Value:    []int64{100},
+			},
+			{
+				Location: []*profile.Location{locs[1], locs[0]},
+				Value:    []int64{200},
+			},
+		},
+		Location: locs,
+		Function: funcs,
+		Mapping:  mapping,
+	}
+}
+
+func TestGetHostAndPort(t *testing.T) {
+	if runtime.GOOS == "nacl" || runtime.GOOS == "js" {
+		t.Skip("test assumes tcp available")
+	}
+
+	type testCase struct {
+		hostport       string
+		wantHost       string
+		wantPort       int
+		wantRandomPort bool
+	}
+
+	testCases := []testCase{
+		{":", "localhost", 0, true},
+		{":4681", "localhost", 4681, false},
+		{"localhost:4681", "localhost", 4681, false},
+	}
+	for _, tc := range testCases {
+		host, port, err := getHostAndPort(tc.hostport)
+		if err != nil {
+			t.Errorf("could not get host and port for %q: %v", tc.hostport, err)
+		}
+		if got, want := host, tc.wantHost; got != want {
+			t.Errorf("for %s, got host %s, want %s", tc.hostport, got, want)
+			continue
+		}
+		if !tc.wantRandomPort {
+			if got, want := port, tc.wantPort; got != want {
+				t.Errorf("for %s, got port %d, want %d", tc.hostport, got, want)
+				continue
+			}
+		}
+	}
+}
+
+func TestIsLocalHost(t *testing.T) {
+	for _, s := range []string{"localhost:10000", "[::1]:10000", "127.0.0.1:10000"} {
+		host, _, err := net.SplitHostPort(s)
+		if err != nil {
+			t.Error("unexpected error when splitting", s)
+			continue
+		}
+		if !isLocalhost(host) {
+			t.Errorf("host %s from %s not considered local", host, s)
+		}
+	}
+}