vendor: delete

9 files changed, 0 insertions, 4581 deletions

diff --git a/vendor/github.com/google/pprof/profile/encode.go b/vendor/github.com/google/pprof/profile/encode.go
deleted file mode 100644
index 8ce9d3cf3..000000000
--- a/vendor/github.com/google/pprof/profile/encode.go
+++ /dev/null
@@ -1,596 +0,0 @@
-// 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 profile
-
-import (
-	"errors"
-	"sort"
-	"strings"
-)
-
-func (p *Profile) decoder() []decoder {
-	return profileDecoder
-}
-
-// preEncode populates the unexported fields to be used by encode
-// (with suffix X) from the corresponding exported fields. The
-// exported fields are cleared up to facilitate testing.
-func (p *Profile) preEncode() {
-	strings := make(map[string]int)
-	addString(strings, "")
-
-	for _, st := range p.SampleType {
-		st.typeX = addString(strings, st.Type)
-		st.unitX = addString(strings, st.Unit)
-	}
-
-	for _, s := range p.Sample {
-		s.labelX = nil
-		var keys []string
-		for k := range s.Label {
-			keys = append(keys, k)
-		}
-		sort.Strings(keys)
-		for _, k := range keys {
-			vs := s.Label[k]
-			for _, v := range vs {
-				s.labelX = append(s.labelX,
-					label{
-						keyX: addString(strings, k),
-						strX: addString(strings, v),
-					},
-				)
-			}
-		}
-		var numKeys []string
-		for k := range s.NumLabel {
-			numKeys = append(numKeys, k)
-		}
-		sort.Strings(numKeys)
-		for _, k := range numKeys {
-			keyX := addString(strings, k)
-			vs := s.NumLabel[k]
-			units := s.NumUnit[k]
-			for i, v := range vs {
-				var unitX int64
-				if len(units) != 0 {
-					unitX = addString(strings, units[i])
-				}
-				s.labelX = append(s.labelX,
-					label{
-						keyX:  keyX,
-						numX:  v,
-						unitX: unitX,
-					},
-				)
-			}
-		}
-		s.locationIDX = make([]uint64, len(s.Location))
-		for i, loc := range s.Location {
-			s.locationIDX[i] = loc.ID
-		}
-	}
-
-	for _, m := range p.Mapping {
-		m.fileX = addString(strings, m.File)
-		m.buildIDX = addString(strings, m.BuildID)
-	}
-
-	for _, l := range p.Location {
-		for i, ln := range l.Line {
-			if ln.Function != nil {
-				l.Line[i].functionIDX = ln.Function.ID
-			} else {
-				l.Line[i].functionIDX = 0
-			}
-		}
-		if l.Mapping != nil {
-			l.mappingIDX = l.Mapping.ID
-		} else {
-			l.mappingIDX = 0
-		}
-	}
-	for _, f := range p.Function {
-		f.nameX = addString(strings, f.Name)
-		f.systemNameX = addString(strings, f.SystemName)
-		f.filenameX = addString(strings, f.Filename)
-	}
-
-	p.dropFramesX = addString(strings, p.DropFrames)
-	p.keepFramesX = addString(strings, p.KeepFrames)
-
-	if pt := p.PeriodType; pt != nil {
-		pt.typeX = addString(strings, pt.Type)
-		pt.unitX = addString(strings, pt.Unit)
-	}
-
-	p.commentX = nil
-	for _, c := range p.Comments {
-		p.commentX = append(p.commentX, addString(strings, c))
-	}
-
-	p.defaultSampleTypeX = addString(strings, p.DefaultSampleType)
-	p.docURLX = addString(strings, p.DocURL)
-
-	p.stringTable = make([]string, len(strings))
-	for s, i := range strings {
-		p.stringTable[i] = s
-	}
-}
-
-func (p *Profile) encode(b *buffer) {
-	for _, x := range p.SampleType {
-		encodeMessage(b, 1, x)
-	}
-	for _, x := range p.Sample {
-		encodeMessage(b, 2, x)
-	}
-	for _, x := range p.Mapping {
-		encodeMessage(b, 3, x)
-	}
-	for _, x := range p.Location {
-		encodeMessage(b, 4, x)
-	}
-	for _, x := range p.Function {
-		encodeMessage(b, 5, x)
-	}
-	encodeStrings(b, 6, p.stringTable)
-	encodeInt64Opt(b, 7, p.dropFramesX)
-	encodeInt64Opt(b, 8, p.keepFramesX)
-	encodeInt64Opt(b, 9, p.TimeNanos)
-	encodeInt64Opt(b, 10, p.DurationNanos)
-	if pt := p.PeriodType; pt != nil && (pt.typeX != 0 || pt.unitX != 0) {
-		encodeMessage(b, 11, p.PeriodType)
-	}
-	encodeInt64Opt(b, 12, p.Period)
-	encodeInt64s(b, 13, p.commentX)
-	encodeInt64(b, 14, p.defaultSampleTypeX)
-	encodeInt64Opt(b, 15, p.docURLX)
-}
-
-var profileDecoder = []decoder{
-	nil, // 0
-	// repeated ValueType sample_type = 1
-	func(b *buffer, m message) error {
-		x := new(ValueType)
-		pp := m.(*Profile)
-		pp.SampleType = append(pp.SampleType, x)
-		return decodeMessage(b, x)
-	},
-	// repeated Sample sample = 2
-	func(b *buffer, m message) error {
-		x := new(Sample)
-		pp := m.(*Profile)
-		pp.Sample = append(pp.Sample, x)
-		return decodeMessage(b, x)
-	},
-	// repeated Mapping mapping = 3
-	func(b *buffer, m message) error {
-		x := new(Mapping)
-		pp := m.(*Profile)
-		pp.Mapping = append(pp.Mapping, x)
-		return decodeMessage(b, x)
-	},
-	// repeated Location location = 4
-	func(b *buffer, m message) error {
-		x := new(Location)
-		x.Line = b.tmpLines[:0] // Use shared space temporarily
-		pp := m.(*Profile)
-		pp.Location = append(pp.Location, x)
-		err := decodeMessage(b, x)
-		b.tmpLines = x.Line[:0]
-		// Copy to shrink size and detach from shared space.
-		x.Line = append([]Line(nil), x.Line...)
-		return err
-	},
-	// repeated Function function = 5
-	func(b *buffer, m message) error {
-		x := new(Function)
-		pp := m.(*Profile)
-		pp.Function = append(pp.Function, x)
-		return decodeMessage(b, x)
-	},
-	// repeated string string_table = 6
-	func(b *buffer, m message) error {
-		err := decodeStrings(b, &m.(*Profile).stringTable)
-		if err != nil {
-			return err
-		}
-		if m.(*Profile).stringTable[0] != "" {
-			return errors.New("string_table[0] must be ''")
-		}
-		return nil
-	},
-	// int64 drop_frames = 7
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Profile).dropFramesX) },
-	// int64 keep_frames = 8
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Profile).keepFramesX) },
-	// int64 time_nanos = 9
-	func(b *buffer, m message) error {
-		if m.(*Profile).TimeNanos != 0 {
-			return errConcatProfile
-		}
-		return decodeInt64(b, &m.(*Profile).TimeNanos)
-	},
-	// int64 duration_nanos = 10
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Profile).DurationNanos) },
-	// ValueType period_type = 11
-	func(b *buffer, m message) error {
-		x := new(ValueType)
-		pp := m.(*Profile)
-		pp.PeriodType = x
-		return decodeMessage(b, x)
-	},
-	// int64 period = 12
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Profile).Period) },
-	// repeated int64 comment = 13
-	func(b *buffer, m message) error { return decodeInt64s(b, &m.(*Profile).commentX) },
-	// int64 defaultSampleType = 14
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Profile).defaultSampleTypeX) },
-	// string doc_link = 15;
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Profile).docURLX) },
-}
-
-// postDecode takes the unexported fields populated by decode (with
-// suffix X) and populates the corresponding exported fields.
-// The unexported fields are cleared up to facilitate testing.
-func (p *Profile) postDecode() error {
-	var err error
-	mappings := make(map[uint64]*Mapping, len(p.Mapping))
-	mappingIds := make([]*Mapping, len(p.Mapping)+1)
-	for _, m := range p.Mapping {
-		m.File, err = getString(p.stringTable, &m.fileX, err)
-		m.BuildID, err = getString(p.stringTable, &m.buildIDX, err)
-		if m.ID < uint64(len(mappingIds)) {
-			mappingIds[m.ID] = m
-		} else {
-			mappings[m.ID] = m
-		}
-
-		// If this a main linux kernel mapping with a relocation symbol suffix
-		// ("[kernel.kallsyms]_text"), extract said suffix.
-		// It is fairly hacky to handle at this level, but the alternatives appear even worse.
-		const prefix = "[kernel.kallsyms]"
-		if strings.HasPrefix(m.File, prefix) {
-			m.KernelRelocationSymbol = m.File[len(prefix):]
-		}
-	}
-
-	functions := make(map[uint64]*Function, len(p.Function))
-	functionIds := make([]*Function, len(p.Function)+1)
-	for _, f := range p.Function {
-		f.Name, err = getString(p.stringTable, &f.nameX, err)
-		f.SystemName, err = getString(p.stringTable, &f.systemNameX, err)
-		f.Filename, err = getString(p.stringTable, &f.filenameX, err)
-		if f.ID < uint64(len(functionIds)) {
-			functionIds[f.ID] = f
-		} else {
-			functions[f.ID] = f
-		}
-	}
-
-	locations := make(map[uint64]*Location, len(p.Location))
-	locationIds := make([]*Location, len(p.Location)+1)
-	for _, l := range p.Location {
-		if id := l.mappingIDX; id < uint64(len(mappingIds)) {
-			l.Mapping = mappingIds[id]
-		} else {
-			l.Mapping = mappings[id]
-		}
-		l.mappingIDX = 0
-		for i, ln := range l.Line {
-			if id := ln.functionIDX; id != 0 {
-				l.Line[i].functionIDX = 0
-				if id < uint64(len(functionIds)) {
-					l.Line[i].Function = functionIds[id]
-				} else {
-					l.Line[i].Function = functions[id]
-				}
-			}
-		}
-		if l.ID < uint64(len(locationIds)) {
-			locationIds[l.ID] = l
-		} else {
-			locations[l.ID] = l
-		}
-	}
-
-	for _, st := range p.SampleType {
-		st.Type, err = getString(p.stringTable, &st.typeX, err)
-		st.Unit, err = getString(p.stringTable, &st.unitX, err)
-	}
-
-	// Pre-allocate space for all locations.
-	numLocations := 0
-	for _, s := range p.Sample {
-		numLocations += len(s.locationIDX)
-	}
-	locBuffer := make([]*Location, numLocations)
-
-	for _, s := range p.Sample {
-		if len(s.labelX) > 0 {
-			labels := make(map[string][]string, len(s.labelX))
-			numLabels := make(map[string][]int64, len(s.labelX))
-			numUnits := make(map[string][]string, len(s.labelX))
-			for _, l := range s.labelX {
-				var key, value string
-				key, err = getString(p.stringTable, &l.keyX, err)
-				if l.strX != 0 {
-					value, err = getString(p.stringTable, &l.strX, err)
-					labels[key] = append(labels[key], value)
-				} else if l.numX != 0 || l.unitX != 0 {
-					numValues := numLabels[key]
-					units := numUnits[key]
-					if l.unitX != 0 {
-						var unit string
-						unit, err = getString(p.stringTable, &l.unitX, err)
-						units = padStringArray(units, len(numValues))
-						numUnits[key] = append(units, unit)
-					}
-					numLabels[key] = append(numLabels[key], l.numX)
-				}
-			}
-			if len(labels) > 0 {
-				s.Label = labels
-			}
-			if len(numLabels) > 0 {
-				s.NumLabel = numLabels
-				for key, units := range numUnits {
-					if len(units) > 0 {
-						numUnits[key] = padStringArray(units, len(numLabels[key]))
-					}
-				}
-				s.NumUnit = numUnits
-			}
-		}
-
-		s.Location = locBuffer[:len(s.locationIDX)]
-		locBuffer = locBuffer[len(s.locationIDX):]
-		for i, lid := range s.locationIDX {
-			if lid < uint64(len(locationIds)) {
-				s.Location[i] = locationIds[lid]
-			} else {
-				s.Location[i] = locations[lid]
-			}
-		}
-		s.locationIDX = nil
-	}
-
-	p.DropFrames, err = getString(p.stringTable, &p.dropFramesX, err)
-	p.KeepFrames, err = getString(p.stringTable, &p.keepFramesX, err)
-
-	if pt := p.PeriodType; pt == nil {
-		p.PeriodType = &ValueType{}
-	}
-
-	if pt := p.PeriodType; pt != nil {
-		pt.Type, err = getString(p.stringTable, &pt.typeX, err)
-		pt.Unit, err = getString(p.stringTable, &pt.unitX, err)
-	}
-
-	for _, i := range p.commentX {
-		var c string
-		c, err = getString(p.stringTable, &i, err)
-		p.Comments = append(p.Comments, c)
-	}
-
-	p.commentX = nil
-	p.DefaultSampleType, err = getString(p.stringTable, &p.defaultSampleTypeX, err)
-	p.DocURL, err = getString(p.stringTable, &p.docURLX, err)
-	p.stringTable = nil
-	return err
-}
-
-// padStringArray pads arr with enough empty strings to make arr
-// length l when arr's length is less than l.
-func padStringArray(arr []string, l int) []string {
-	if l <= len(arr) {
-		return arr
-	}
-	return append(arr, make([]string, l-len(arr))...)
-}
-
-func (p *ValueType) decoder() []decoder {
-	return valueTypeDecoder
-}
-
-func (p *ValueType) encode(b *buffer) {
-	encodeInt64Opt(b, 1, p.typeX)
-	encodeInt64Opt(b, 2, p.unitX)
-}
-
-var valueTypeDecoder = []decoder{
-	nil, // 0
-	// optional int64 type = 1
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*ValueType).typeX) },
-	// optional int64 unit = 2
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*ValueType).unitX) },
-}
-
-func (p *Sample) decoder() []decoder {
-	return sampleDecoder
-}
-
-func (p *Sample) encode(b *buffer) {
-	encodeUint64s(b, 1, p.locationIDX)
-	encodeInt64s(b, 2, p.Value)
-	for _, x := range p.labelX {
-		encodeMessage(b, 3, x)
-	}
-}
-
-var sampleDecoder = []decoder{
-	nil, // 0
-	// repeated uint64 location = 1
-	func(b *buffer, m message) error { return decodeUint64s(b, &m.(*Sample).locationIDX) },
-	// repeated int64 value = 2
-	func(b *buffer, m message) error { return decodeInt64s(b, &m.(*Sample).Value) },
-	// repeated Label label = 3
-	func(b *buffer, m message) error {
-		s := m.(*Sample)
-		n := len(s.labelX)
-		s.labelX = append(s.labelX, label{})
-		return decodeMessage(b, &s.labelX[n])
-	},
-}
-
-func (p label) decoder() []decoder {
-	return labelDecoder
-}
-
-func (p label) encode(b *buffer) {
-	encodeInt64Opt(b, 1, p.keyX)
-	encodeInt64Opt(b, 2, p.strX)
-	encodeInt64Opt(b, 3, p.numX)
-	encodeInt64Opt(b, 4, p.unitX)
-}
-
-var labelDecoder = []decoder{
-	nil, // 0
-	// optional int64 key = 1
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*label).keyX) },
-	// optional int64 str = 2
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*label).strX) },
-	// optional int64 num = 3
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*label).numX) },
-	// optional int64 num = 4
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*label).unitX) },
-}
-
-func (p *Mapping) decoder() []decoder {
-	return mappingDecoder
-}
-
-func (p *Mapping) encode(b *buffer) {
-	encodeUint64Opt(b, 1, p.ID)
-	encodeUint64Opt(b, 2, p.Start)
-	encodeUint64Opt(b, 3, p.Limit)
-	encodeUint64Opt(b, 4, p.Offset)
-	encodeInt64Opt(b, 5, p.fileX)
-	encodeInt64Opt(b, 6, p.buildIDX)
-	encodeBoolOpt(b, 7, p.HasFunctions)
-	encodeBoolOpt(b, 8, p.HasFilenames)
-	encodeBoolOpt(b, 9, p.HasLineNumbers)
-	encodeBoolOpt(b, 10, p.HasInlineFrames)
-}
-
-var mappingDecoder = []decoder{
-	nil, // 0
-	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).ID) },            // optional uint64 id = 1
-	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).Start) },         // optional uint64 memory_offset = 2
-	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).Limit) },         // optional uint64 memory_limit = 3
-	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).Offset) },        // optional uint64 file_offset = 4
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Mapping).fileX) },          // optional int64 filename = 5
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Mapping).buildIDX) },       // optional int64 build_id = 6
-	func(b *buffer, m message) error { return decodeBool(b, &m.(*Mapping).HasFunctions) },    // optional bool has_functions = 7
-	func(b *buffer, m message) error { return decodeBool(b, &m.(*Mapping).HasFilenames) },    // optional bool has_filenames = 8
-	func(b *buffer, m message) error { return decodeBool(b, &m.(*Mapping).HasLineNumbers) },  // optional bool has_line_numbers = 9
-	func(b *buffer, m message) error { return decodeBool(b, &m.(*Mapping).HasInlineFrames) }, // optional bool has_inline_frames = 10
-}
-
-func (p *Location) decoder() []decoder {
-	return locationDecoder
-}
-
-func (p *Location) encode(b *buffer) {
-	encodeUint64Opt(b, 1, p.ID)
-	encodeUint64Opt(b, 2, p.mappingIDX)
-	encodeUint64Opt(b, 3, p.Address)
-	for i := range p.Line {
-		encodeMessage(b, 4, &p.Line[i])
-	}
-	encodeBoolOpt(b, 5, p.IsFolded)
-}
-
-var locationDecoder = []decoder{
-	nil, // 0
-	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Location).ID) },         // optional uint64 id = 1;
-	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Location).mappingIDX) }, // optional uint64 mapping_id = 2;
-	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Location).Address) },    // optional uint64 address = 3;
-	func(b *buffer, m message) error { // repeated Line line = 4
-		pp := m.(*Location)
-		n := len(pp.Line)
-		pp.Line = append(pp.Line, Line{})
-		return decodeMessage(b, &pp.Line[n])
-	},
-	func(b *buffer, m message) error { return decodeBool(b, &m.(*Location).IsFolded) }, // optional bool is_folded = 5;
-}
-
-func (p *Line) decoder() []decoder {
-	return lineDecoder
-}
-
-func (p *Line) encode(b *buffer) {
-	encodeUint64Opt(b, 1, p.functionIDX)
-	encodeInt64Opt(b, 2, p.Line)
-	encodeInt64Opt(b, 3, p.Column)
-}
-
-var lineDecoder = []decoder{
-	nil, // 0
-	// optional uint64 function_id = 1
-	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Line).functionIDX) },
-	// optional int64 line = 2
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Line).Line) },
-	// optional int64 column = 3
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Line).Column) },
-}
-
-func (p *Function) decoder() []decoder {
-	return functionDecoder
-}
-
-func (p *Function) encode(b *buffer) {
-	encodeUint64Opt(b, 1, p.ID)
-	encodeInt64Opt(b, 2, p.nameX)
-	encodeInt64Opt(b, 3, p.systemNameX)
-	encodeInt64Opt(b, 4, p.filenameX)
-	encodeInt64Opt(b, 5, p.StartLine)
-}
-
-var functionDecoder = []decoder{
-	nil, // 0
-	// optional uint64 id = 1
-	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Function).ID) },
-	// optional int64 function_name = 2
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Function).nameX) },
-	// optional int64 function_system_name = 3
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Function).systemNameX) },
-	// repeated int64 filename = 4
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Function).filenameX) },
-	// optional int64 start_line = 5
-	func(b *buffer, m message) error { return decodeInt64(b, &m.(*Function).StartLine) },
-}
-
-func addString(strings map[string]int, s string) int64 {
-	i, ok := strings[s]
-	if !ok {
-		i = len(strings)
-		strings[s] = i
-	}
-	return int64(i)
-}
-
-func getString(strings []string, strng *int64, err error) (string, error) {
-	if err != nil {
-		return "", err
-	}
-	s := int(*strng)
-	if s < 0 || s >= len(strings) {
-		return "", errMalformed
-	}
-	*strng = 0
-	return strings[s], nil
-}
diff --git a/vendor/github.com/google/pprof/profile/filter.go b/vendor/github.com/google/pprof/profile/filter.go
deleted file mode 100644
index c794b9390..000000000
--- a/vendor/github.com/google/pprof/profile/filter.go
+++ /dev/null
@@ -1,274 +0,0 @@
-// 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 profile
-
-// Implements methods to filter samples from profiles.
-
-import "regexp"
-
-// FilterSamplesByName filters the samples in a profile and only keeps
-// samples where at least one frame matches focus but none match ignore.
-// Returns true is the corresponding regexp matched at least one sample.
-func (p *Profile) FilterSamplesByName(focus, ignore, hide, show *regexp.Regexp) (fm, im, hm, hnm bool) {
-	if focus == nil && ignore == nil && hide == nil && show == nil {
-		fm = true // Missing focus implies a match
-		return
-	}
-	focusOrIgnore := make(map[uint64]bool)
-	hidden := make(map[uint64]bool)
-	for _, l := range p.Location {
-		if ignore != nil && l.matchesName(ignore) {
-			im = true
-			focusOrIgnore[l.ID] = false
-		} else if focus == nil || l.matchesName(focus) {
-			fm = true
-			focusOrIgnore[l.ID] = true
-		}
-
-		if hide != nil && l.matchesName(hide) {
-			hm = true
-			l.Line = l.unmatchedLines(hide)
-			if len(l.Line) == 0 {
-				hidden[l.ID] = true
-			}
-		}
-		if show != nil {
-			l.Line = l.matchedLines(show)
-			if len(l.Line) == 0 {
-				hidden[l.ID] = true
-			} else {
-				hnm = true
-			}
-		}
-	}
-
-	s := make([]*Sample, 0, len(p.Sample))
-	for _, sample := range p.Sample {
-		if focusedAndNotIgnored(sample.Location, focusOrIgnore) {
-			if len(hidden) > 0 {
-				var locs []*Location
-				for _, loc := range sample.Location {
-					if !hidden[loc.ID] {
-						locs = append(locs, loc)
-					}
-				}
-				if len(locs) == 0 {
-					// Remove sample with no locations (by not adding it to s).
-					continue
-				}
-				sample.Location = locs
-			}
-			s = append(s, sample)
-		}
-	}
-	p.Sample = s
-
-	return
-}
-
-// ShowFrom drops all stack frames above the highest matching frame and returns
-// whether a match was found. If showFrom is nil it returns false and does not
-// modify the profile.
-//
-// Example: consider a sample with frames [A, B, C, B], where A is the root.
-// ShowFrom(nil) returns false and has frames [A, B, C, B].
-// ShowFrom(A) returns true and has frames [A, B, C, B].
-// ShowFrom(B) returns true and has frames [B, C, B].
-// ShowFrom(C) returns true and has frames [C, B].
-// ShowFrom(D) returns false and drops the sample because no frames remain.
-func (p *Profile) ShowFrom(showFrom *regexp.Regexp) (matched bool) {
-	if showFrom == nil {
-		return false
-	}
-	// showFromLocs stores location IDs that matched ShowFrom.
-	showFromLocs := make(map[uint64]bool)
-	// Apply to locations.
-	for _, loc := range p.Location {
-		if filterShowFromLocation(loc, showFrom) {
-			showFromLocs[loc.ID] = true
-			matched = true
-		}
-	}
-	// For all samples, strip locations after the highest matching one.
-	s := make([]*Sample, 0, len(p.Sample))
-	for _, sample := range p.Sample {
-		for i := len(sample.Location) - 1; i >= 0; i-- {
-			if showFromLocs[sample.Location[i].ID] {
-				sample.Location = sample.Location[:i+1]
-				s = append(s, sample)
-				break
-			}
-		}
-	}
-	p.Sample = s
-	return matched
-}
-
-// filterShowFromLocation tests a showFrom regex against a location, removes
-// lines after the last match and returns whether a match was found. If the
-// mapping is matched, then all lines are kept.
-func filterShowFromLocation(loc *Location, showFrom *regexp.Regexp) bool {
-	if m := loc.Mapping; m != nil && showFrom.MatchString(m.File) {
-		return true
-	}
-	if i := loc.lastMatchedLineIndex(showFrom); i >= 0 {
-		loc.Line = loc.Line[:i+1]
-		return true
-	}
-	return false
-}
-
-// lastMatchedLineIndex returns the index of the last line that matches a regex,
-// or -1 if no match is found.
-func (loc *Location) lastMatchedLineIndex(re *regexp.Regexp) int {
-	for i := len(loc.Line) - 1; i >= 0; i-- {
-		if fn := loc.Line[i].Function; fn != nil {
-			if re.MatchString(fn.Name) || re.MatchString(fn.Filename) {
-				return i
-			}
-		}
-	}
-	return -1
-}
-
-// FilterTagsByName filters the tags in a profile and only keeps
-// tags that match show and not hide.
-func (p *Profile) FilterTagsByName(show, hide *regexp.Regexp) (sm, hm bool) {
-	matchRemove := func(name string) bool {
-		matchShow := show == nil || show.MatchString(name)
-		matchHide := hide != nil && hide.MatchString(name)
-
-		if matchShow {
-			sm = true
-		}
-		if matchHide {
-			hm = true
-		}
-		return !matchShow || matchHide
-	}
-	for _, s := range p.Sample {
-		for lab := range s.Label {
-			if matchRemove(lab) {
-				delete(s.Label, lab)
-			}
-		}
-		for lab := range s.NumLabel {
-			if matchRemove(lab) {
-				delete(s.NumLabel, lab)
-			}
-		}
-	}
-	return
-}
-
-// matchesName returns whether the location matches the regular
-// expression. It checks any available function names, file names, and
-// mapping object filename.
-func (loc *Location) matchesName(re *regexp.Regexp) bool {
-	for _, ln := range loc.Line {
-		if fn := ln.Function; fn != nil {
-			if re.MatchString(fn.Name) || re.MatchString(fn.Filename) {
-				return true
-			}
-		}
-	}
-	if m := loc.Mapping; m != nil && re.MatchString(m.File) {
-		return true
-	}
-	return false
-}
-
-// unmatchedLines returns the lines in the location that do not match
-// the regular expression.
-func (loc *Location) unmatchedLines(re *regexp.Regexp) []Line {
-	if m := loc.Mapping; m != nil && re.MatchString(m.File) {
-		return nil
-	}
-	var lines []Line
-	for _, ln := range loc.Line {
-		if fn := ln.Function; fn != nil {
-			if re.MatchString(fn.Name) || re.MatchString(fn.Filename) {
-				continue
-			}
-		}
-		lines = append(lines, ln)
-	}
-	return lines
-}
-
-// matchedLines returns the lines in the location that match
-// the regular expression.
-func (loc *Location) matchedLines(re *regexp.Regexp) []Line {
-	if m := loc.Mapping; m != nil && re.MatchString(m.File) {
-		return loc.Line
-	}
-	var lines []Line
-	for _, ln := range loc.Line {
-		if fn := ln.Function; fn != nil {
-			if !re.MatchString(fn.Name) && !re.MatchString(fn.Filename) {
-				continue
-			}
-		}
-		lines = append(lines, ln)
-	}
-	return lines
-}
-
-// focusedAndNotIgnored looks up a slice of ids against a map of
-// focused/ignored locations. The map only contains locations that are
-// explicitly focused or ignored. Returns whether there is at least
-// one focused location but no ignored locations.
-func focusedAndNotIgnored(locs []*Location, m map[uint64]bool) bool {
-	var f bool
-	for _, loc := range locs {
-		if focus, focusOrIgnore := m[loc.ID]; focusOrIgnore {
-			if focus {
-				// Found focused location. Must keep searching in case there
-				// is an ignored one as well.
-				f = true
-			} else {
-				// Found ignored location. Can return false right away.
-				return false
-			}
-		}
-	}
-	return f
-}
-
-// TagMatch selects tags for filtering
-type TagMatch func(s *Sample) bool
-
-// FilterSamplesByTag removes all samples from the profile, except
-// those that match focus and do not match the ignore regular
-// expression.
-func (p *Profile) FilterSamplesByTag(focus, ignore TagMatch) (fm, im bool) {
-	samples := make([]*Sample, 0, len(p.Sample))
-	for _, s := range p.Sample {
-		focused, ignored := true, false
-		if focus != nil {
-			focused = focus(s)
-		}
-		if ignore != nil {
-			ignored = ignore(s)
-		}
-		fm = fm || focused
-		im = im || ignored
-		if focused && !ignored {
-			samples = append(samples, s)
-		}
-	}
-	p.Sample = samples
-	return
-}
diff --git a/vendor/github.com/google/pprof/profile/index.go b/vendor/github.com/google/pprof/profile/index.go
deleted file mode 100644
index bef1d6046..000000000
--- a/vendor/github.com/google/pprof/profile/index.go
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright 2016 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 profile
-
-import (
-	"fmt"
-	"strconv"
-	"strings"
-)
-
-// SampleIndexByName returns the appropriate index for a value of sample index.
-// If numeric, it returns the number, otherwise it looks up the text in the
-// profile sample types.
-func (p *Profile) SampleIndexByName(sampleIndex string) (int, error) {
-	if sampleIndex == "" {
-		if dst := p.DefaultSampleType; dst != "" {
-			for i, t := range sampleTypes(p) {
-				if t == dst {
-					return i, nil
-				}
-			}
-		}
-		// By default select the last sample value
-		return len(p.SampleType) - 1, nil
-	}
-	if i, err := strconv.Atoi(sampleIndex); err == nil {
-		if i < 0 || i >= len(p.SampleType) {
-			return 0, fmt.Errorf("sample_index %s is outside the range [0..%d]", sampleIndex, len(p.SampleType)-1)
-		}
-		return i, nil
-	}
-
-	// Remove the inuse_ prefix to support legacy pprof options
-	// "inuse_space" and "inuse_objects" for profiles containing types
-	// "space" and "objects".
-	noInuse := strings.TrimPrefix(sampleIndex, "inuse_")
-	for i, t := range p.SampleType {
-		if t.Type == sampleIndex || t.Type == noInuse {
-			return i, nil
-		}
-	}
-
-	return 0, fmt.Errorf("sample_index %q must be one of: %v", sampleIndex, sampleTypes(p))
-}
-
-func sampleTypes(p *Profile) []string {
-	types := make([]string, len(p.SampleType))
-	for i, t := range p.SampleType {
-		types[i] = t.Type
-	}
-	return types
-}
diff --git a/vendor/github.com/google/pprof/profile/legacy_java_profile.go b/vendor/github.com/google/pprof/profile/legacy_java_profile.go
deleted file mode 100644
index 4580bab18..000000000
--- a/vendor/github.com/google/pprof/profile/legacy_java_profile.go
+++ /dev/null
@@ -1,315 +0,0 @@
-// 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.
-
-// This file implements parsers to convert java legacy profiles into
-// the profile.proto format.
-
-package profile
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"path/filepath"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-var (
-	attributeRx            = regexp.MustCompile(`([\w ]+)=([\w ]+)`)
-	javaSampleRx           = regexp.MustCompile(` *(\d+) +(\d+) +@ +([ x0-9a-f]*)`)
-	javaLocationRx         = regexp.MustCompile(`^\s*0x([[:xdigit:]]+)\s+(.*)\s*$`)
-	javaLocationFileLineRx = regexp.MustCompile(`^(.*)\s+\((.+):(-?[[:digit:]]+)\)$`)
-	javaLocationPathRx     = regexp.MustCompile(`^(.*)\s+\((.*)\)$`)
-)
-
-// javaCPUProfile returns a new Profile from profilez data.
-// b is the profile bytes after the header, period is the profiling
-// period, and parse is a function to parse 8-byte chunks from the
-// profile in its native endianness.
-func javaCPUProfile(b []byte, period int64, parse func(b []byte) (uint64, []byte)) (*Profile, error) {
-	p := &Profile{
-		Period:     period * 1000,
-		PeriodType: &ValueType{Type: "cpu", Unit: "nanoseconds"},
-		SampleType: []*ValueType{{Type: "samples", Unit: "count"}, {Type: "cpu", Unit: "nanoseconds"}},
-	}
-	var err error
-	var locs map[uint64]*Location
-	if b, locs, err = parseCPUSamples(b, parse, false, p); err != nil {
-		return nil, err
-	}
-
-	if err = parseJavaLocations(b, locs, p); err != nil {
-		return nil, err
-	}
-
-	// Strip out addresses for better merge.
-	if err = p.Aggregate(true, true, true, true, false, false); err != nil {
-		return nil, err
-	}
-
-	return p, nil
-}
-
-// parseJavaProfile returns a new profile from heapz or contentionz
-// data. b is the profile bytes after the header.
-func parseJavaProfile(b []byte) (*Profile, error) {
-	h := bytes.SplitAfterN(b, []byte("\n"), 2)
-	if len(h) < 2 {
-		return nil, errUnrecognized
-	}
-
-	p := &Profile{
-		PeriodType: &ValueType{},
-	}
-	header := string(bytes.TrimSpace(h[0]))
-
-	var err error
-	var pType string
-	switch header {
-	case "--- heapz 1 ---":
-		pType = "heap"
-	case "--- contentionz 1 ---":
-		pType = "contention"
-	default:
-		return nil, errUnrecognized
-	}
-
-	if b, err = parseJavaHeader(pType, h[1], p); err != nil {
-		return nil, err
-	}
-	var locs map[uint64]*Location
-	if b, locs, err = parseJavaSamples(pType, b, p); err != nil {
-		return nil, err
-	}
-	if err = parseJavaLocations(b, locs, p); err != nil {
-		return nil, err
-	}
-
-	// Strip out addresses for better merge.
-	if err = p.Aggregate(true, true, true, true, false, false); err != nil {
-		return nil, err
-	}
-
-	return p, nil
-}
-
-// parseJavaHeader parses the attribute section on a java profile and
-// populates a profile. Returns the remainder of the buffer after all
-// attributes.
-func parseJavaHeader(pType string, b []byte, p *Profile) ([]byte, error) {
-	nextNewLine := bytes.IndexByte(b, byte('\n'))
-	for nextNewLine != -1 {
-		line := string(bytes.TrimSpace(b[0:nextNewLine]))
-		if line != "" {
-			h := attributeRx.FindStringSubmatch(line)
-			if h == nil {
-				// Not a valid attribute, exit.
-				return b, nil
-			}
-
-			attribute, value := strings.TrimSpace(h[1]), strings.TrimSpace(h[2])
-			var err error
-			switch pType + "/" + attribute {
-			case "heap/format", "cpu/format", "contention/format":
-				if value != "java" {
-					return nil, errUnrecognized
-				}
-			case "heap/resolution":
-				p.SampleType = []*ValueType{
-					{Type: "inuse_objects", Unit: "count"},
-					{Type: "inuse_space", Unit: value},
-				}
-			case "contention/resolution":
-				p.SampleType = []*ValueType{
-					{Type: "contentions", Unit: "count"},
-					{Type: "delay", Unit: value},
-				}
-			case "contention/sampling period":
-				p.PeriodType = &ValueType{
-					Type: "contentions", Unit: "count",
-				}
-				if p.Period, err = strconv.ParseInt(value, 0, 64); err != nil {
-					return nil, fmt.Errorf("failed to parse attribute %s: %v", line, err)
-				}
-			case "contention/ms since reset":
-				millis, err := strconv.ParseInt(value, 0, 64)
-				if err != nil {
-					return nil, fmt.Errorf("failed to parse attribute %s: %v", line, err)
-				}
-				p.DurationNanos = millis * 1000 * 1000
-			default:
-				return nil, errUnrecognized
-			}
-		}
-		// Grab next line.
-		b = b[nextNewLine+1:]
-		nextNewLine = bytes.IndexByte(b, byte('\n'))
-	}
-	return b, nil
-}
-
-// parseJavaSamples parses the samples from a java profile and
-// populates the Samples in a profile. Returns the remainder of the
-// buffer after the samples.
-func parseJavaSamples(pType string, b []byte, p *Profile) ([]byte, map[uint64]*Location, error) {
-	nextNewLine := bytes.IndexByte(b, byte('\n'))
-	locs := make(map[uint64]*Location)
-	for nextNewLine != -1 {
-		line := string(bytes.TrimSpace(b[0:nextNewLine]))
-		if line != "" {
-			sample := javaSampleRx.FindStringSubmatch(line)
-			if sample == nil {
-				// Not a valid sample, exit.
-				return b, locs, nil
-			}
-
-			// Java profiles have data/fields inverted compared to other
-			// profile types.
-			var err error
-			value1, value2, value3 := sample[2], sample[1], sample[3]
-			addrs, err := parseHexAddresses(value3)
-			if err != nil {
-				return nil, nil, fmt.Errorf("malformed sample: %s: %v", line, err)
-			}
-
-			var sloc []*Location
-			for _, addr := range addrs {
-				loc := locs[addr]
-				if locs[addr] == nil {
-					loc = &Location{
-						Address: addr,
-					}
-					p.Location = append(p.Location, loc)
-					locs[addr] = loc
-				}
-				sloc = append(sloc, loc)
-			}
-			s := &Sample{
-				Value:    make([]int64, 2),
-				Location: sloc,
-			}
-
-			if s.Value[0], err = strconv.ParseInt(value1, 0, 64); err != nil {
-				return nil, nil, fmt.Errorf("parsing sample %s: %v", line, err)
-			}
-			if s.Value[1], err = strconv.ParseInt(value2, 0, 64); err != nil {
-				return nil, nil, fmt.Errorf("parsing sample %s: %v", line, err)
-			}
-
-			switch pType {
-			case "heap":
-				const javaHeapzSamplingRate = 524288 // 512K
-				if s.Value[0] == 0 {
-					return nil, nil, fmt.Errorf("parsing sample %s: second value must be non-zero", line)
-				}
-				s.NumLabel = map[string][]int64{"bytes": {s.Value[1] / s.Value[0]}}
-				s.Value[0], s.Value[1] = scaleHeapSample(s.Value[0], s.Value[1], javaHeapzSamplingRate)
-			case "contention":
-				if period := p.Period; period != 0 {
-					s.Value[0] = s.Value[0] * p.Period
-					s.Value[1] = s.Value[1] * p.Period
-				}
-			}
-			p.Sample = append(p.Sample, s)
-		}
-		// Grab next line.
-		b = b[nextNewLine+1:]
-		nextNewLine = bytes.IndexByte(b, byte('\n'))
-	}
-	return b, locs, nil
-}
-
-// parseJavaLocations parses the location information in a java
-// profile and populates the Locations in a profile. It uses the
-// location addresses from the profile as both the ID of each
-// location.
-func parseJavaLocations(b []byte, locs map[uint64]*Location, p *Profile) error {
-	r := bytes.NewBuffer(b)
-	fns := make(map[string]*Function)
-	for {
-		line, err := r.ReadString('\n')
-		if err != nil {
-			if err != io.EOF {
-				return err
-			}
-			if line == "" {
-				break
-			}
-		}
-
-		if line = strings.TrimSpace(line); line == "" {
-			continue
-		}
-
-		jloc := javaLocationRx.FindStringSubmatch(line)
-		if len(jloc) != 3 {
-			continue
-		}
-		addr, err := strconv.ParseUint(jloc[1], 16, 64)
-		if err != nil {
-			return fmt.Errorf("parsing sample %s: %v", line, err)
-		}
-		loc := locs[addr]
-		if loc == nil {
-			// Unused/unseen
-			continue
-		}
-		var lineFunc, lineFile string
-		var lineNo int64
-
-		if fileLine := javaLocationFileLineRx.FindStringSubmatch(jloc[2]); len(fileLine) == 4 {
-			// Found a line of the form: "function (file:line)"
-			lineFunc, lineFile = fileLine[1], fileLine[2]
-			if n, err := strconv.ParseInt(fileLine[3], 10, 64); err == nil && n > 0 {
-				lineNo = n
-			}
-		} else if filePath := javaLocationPathRx.FindStringSubmatch(jloc[2]); len(filePath) == 3 {
-			// If there's not a file:line, it's a shared library path.
-			// The path isn't interesting, so just give the .so.
-			lineFunc, lineFile = filePath[1], filepath.Base(filePath[2])
-		} else if strings.Contains(jloc[2], "generated stub/JIT") {
-			lineFunc = "STUB"
-		} else {
-			// Treat whole line as the function name. This is used by the
-			// java agent for internal states such as "GC" or "VM".
-			lineFunc = jloc[2]
-		}
-		fn := fns[lineFunc]
-
-		if fn == nil {
-			fn = &Function{
-				Name:       lineFunc,
-				SystemName: lineFunc,
-				Filename:   lineFile,
-			}
-			fns[lineFunc] = fn
-			p.Function = append(p.Function, fn)
-		}
-		loc.Line = []Line{
-			{
-				Function: fn,
-				Line:     lineNo,
-			},
-		}
-		loc.Address = 0
-	}
-
-	p.remapLocationIDs()
-	p.remapFunctionIDs()
-	p.remapMappingIDs()
-
-	return nil
-}
diff --git a/vendor/github.com/google/pprof/profile/legacy_profile.go b/vendor/github.com/google/pprof/profile/legacy_profile.go
deleted file mode 100644
index 8d07fd6c2..000000000
--- a/vendor/github.com/google/pprof/profile/legacy_profile.go
+++ /dev/null
@@ -1,1228 +0,0 @@
-// 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.
-
-// This file implements parsers to convert legacy profiles into the
-// profile.proto format.
-
-package profile
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"io"
-	"math"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-var (
-	countStartRE = regexp.MustCompile(`\A(\S+) profile: total \d+\z`)
-	countRE      = regexp.MustCompile(`\A(\d+) @(( 0x[0-9a-f]+)+)\z`)
-
-	heapHeaderRE = regexp.MustCompile(`heap profile: *(\d+): *(\d+) *\[ *(\d+): *(\d+) *\] *@ *(heap[_a-z0-9]*)/?(\d*)`)
-	heapSampleRE = regexp.MustCompile(`(-?\d+): *(-?\d+) *\[ *(\d+): *(\d+) *] @([ x0-9a-f]*)`)
-
-	contentionSampleRE = regexp.MustCompile(`(\d+) *(\d+) @([ x0-9a-f]*)`)
-
-	hexNumberRE = regexp.MustCompile(`0x[0-9a-f]+`)
-
-	growthHeaderRE = regexp.MustCompile(`heap profile: *(\d+): *(\d+) *\[ *(\d+): *(\d+) *\] @ growthz?`)
-
-	fragmentationHeaderRE = regexp.MustCompile(`heap profile: *(\d+): *(\d+) *\[ *(\d+): *(\d+) *\] @ fragmentationz?`)
-
-	threadzStartRE = regexp.MustCompile(`--- threadz \d+ ---`)
-	threadStartRE  = regexp.MustCompile(`--- Thread ([[:xdigit:]]+) \(name: (.*)/(\d+)\) stack: ---`)
-
-	// Regular expressions to parse process mappings. Support the format used by Linux /proc/.../maps and other tools.
-	// Recommended format:
-	// Start   End     object file name     offset(optional)   linker build id
-	// 0x40000-0x80000 /path/to/binary      (@FF00)            abc123456
-	spaceDigits = `\s+[[:digit:]]+`
-	hexPair     = `\s+[[:xdigit:]]+:[[:xdigit:]]+`
-	oSpace      = `\s*`
-	// Capturing expressions.
-	cHex           = `(?:0x)?([[:xdigit:]]+)`
-	cHexRange      = `\s*` + cHex + `[\s-]?` + oSpace + cHex + `:?`
-	cSpaceString   = `(?:\s+(\S+))?`
-	cSpaceHex      = `(?:\s+([[:xdigit:]]+))?`
-	cSpaceAtOffset = `(?:\s+\(@([[:xdigit:]]+)\))?`
-	cPerm          = `(?:\s+([-rwxp]+))?`
-
-	procMapsRE  = regexp.MustCompile(`^` + cHexRange + cPerm + cSpaceHex + hexPair + spaceDigits + cSpaceString)
-	briefMapsRE = regexp.MustCompile(`^` + cHexRange + cPerm + cSpaceString + cSpaceAtOffset + cSpaceHex)
-
-	// Regular expression to parse log data, of the form:
-	// ... file:line] msg...
-	logInfoRE = regexp.MustCompile(`^[^\[\]]+:[0-9]+]\s`)
-)
-
-func isSpaceOrComment(line string) bool {
-	trimmed := strings.TrimSpace(line)
-	return len(trimmed) == 0 || trimmed[0] == '#'
-}
-
-// parseGoCount parses a Go count profile (e.g., threadcreate or
-// goroutine) and returns a new Profile.
-func parseGoCount(b []byte) (*Profile, error) {
-	s := bufio.NewScanner(bytes.NewBuffer(b))
-	// Skip comments at the beginning of the file.
-	for s.Scan() && isSpaceOrComment(s.Text()) {
-	}
-	if err := s.Err(); err != nil {
-		return nil, err
-	}
-	m := countStartRE.FindStringSubmatch(s.Text())
-	if m == nil {
-		return nil, errUnrecognized
-	}
-	profileType := m[1]
-	p := &Profile{
-		PeriodType: &ValueType{Type: profileType, Unit: "count"},
-		Period:     1,
-		SampleType: []*ValueType{{Type: profileType, Unit: "count"}},
-	}
-	locations := make(map[uint64]*Location)
-	for s.Scan() {
-		line := s.Text()
-		if isSpaceOrComment(line) {
-			continue
-		}
-		if strings.HasPrefix(line, "---") {
-			break
-		}
-		m := countRE.FindStringSubmatch(line)
-		if m == nil {
-			return nil, errMalformed
-		}
-		n, err := strconv.ParseInt(m[1], 0, 64)
-		if err != nil {
-			return nil, errMalformed
-		}
-		fields := strings.Fields(m[2])
-		locs := make([]*Location, 0, len(fields))
-		for _, stk := range fields {
-			addr, err := strconv.ParseUint(stk, 0, 64)
-			if err != nil {
-				return nil, errMalformed
-			}
-			// Adjust all frames by -1 to land on top of the call instruction.
-			addr--
-			loc := locations[addr]
-			if loc == nil {
-				loc = &Location{
-					Address: addr,
-				}
-				locations[addr] = loc
-				p.Location = append(p.Location, loc)
-			}
-			locs = append(locs, loc)
-		}
-		p.Sample = append(p.Sample, &Sample{
-			Location: locs,
-			Value:    []int64{n},
-		})
-	}
-	if err := s.Err(); err != nil {
-		return nil, err
-	}
-
-	if err := parseAdditionalSections(s, p); err != nil {
-		return nil, err
-	}
-	return p, nil
-}
-
-// remapLocationIDs ensures there is a location for each address
-// referenced by a sample, and remaps the samples to point to the new
-// location ids.
-func (p *Profile) remapLocationIDs() {
-	seen := make(map[*Location]bool, len(p.Location))
-	var locs []*Location
-
-	for _, s := range p.Sample {
-		for _, l := range s.Location {
-			if seen[l] {
-				continue
-			}
-			l.ID = uint64(len(locs) + 1)
-			locs = append(locs, l)
-			seen[l] = true
-		}
-	}
-	p.Location = locs
-}
-
-func (p *Profile) remapFunctionIDs() {
-	seen := make(map[*Function]bool, len(p.Function))
-	var fns []*Function
-
-	for _, l := range p.Location {
-		for _, ln := range l.Line {
-			fn := ln.Function
-			if fn == nil || seen[fn] {
-				continue
-			}
-			fn.ID = uint64(len(fns) + 1)
-			fns = append(fns, fn)
-			seen[fn] = true
-		}
-	}
-	p.Function = fns
-}
-
-// remapMappingIDs matches location addresses with existing mappings
-// and updates them appropriately. This is O(N*M), if this ever shows
-// up as a bottleneck, evaluate sorting the mappings and doing a
-// binary search, which would make it O(N*log(M)).
-func (p *Profile) remapMappingIDs() {
-	// Some profile handlers will incorrectly set regions for the main
-	// executable if its section is remapped. Fix them through heuristics.
-
-	if len(p.Mapping) > 0 {
-		// Remove the initial mapping if named '/anon_hugepage' and has a
-		// consecutive adjacent mapping.
-		if m := p.Mapping[0]; strings.HasPrefix(m.File, "/anon_hugepage") {
-			if len(p.Mapping) > 1 && m.Limit == p.Mapping[1].Start {
-				p.Mapping = p.Mapping[1:]
-			}
-		}
-	}
-
-	// Subtract the offset from the start of the main mapping if it
-	// ends up at a recognizable start address.
-	if len(p.Mapping) > 0 {
-		const expectedStart = 0x400000
-		if m := p.Mapping[0]; m.Start-m.Offset == expectedStart {
-			m.Start = expectedStart
-			m.Offset = 0
-		}
-	}
-
-	// Associate each location with an address to the corresponding
-	// mapping. Create fake mapping if a suitable one isn't found.
-	var fake *Mapping
-nextLocation:
-	for _, l := range p.Location {
-		a := l.Address
-		if l.Mapping != nil || a == 0 {
-			continue
-		}
-		for _, m := range p.Mapping {
-			if m.Start <= a && a < m.Limit {
-				l.Mapping = m
-				continue nextLocation
-			}
-		}
-		// Work around legacy handlers failing to encode the first
-		// part of mappings split into adjacent ranges.
-		for _, m := range p.Mapping {
-			if m.Offset != 0 && m.Start-m.Offset <= a && a < m.Start {
-				m.Start -= m.Offset
-				m.Offset = 0
-				l.Mapping = m
-				continue nextLocation
-			}
-		}
-		// If there is still no mapping, create a fake one.
-		// This is important for the Go legacy handler, which produced
-		// no mappings.
-		if fake == nil {
-			fake = &Mapping{
-				ID:    1,
-				Limit: ^uint64(0),
-			}
-			p.Mapping = append(p.Mapping, fake)
-		}
-		l.Mapping = fake
-	}
-
-	// Reset all mapping IDs.
-	for i, m := range p.Mapping {
-		m.ID = uint64(i + 1)
-	}
-}
-
-var cpuInts = []func([]byte) (uint64, []byte){
-	get32l,
-	get32b,
-	get64l,
-	get64b,
-}
-
-func get32l(b []byte) (uint64, []byte) {
-	if len(b) < 4 {
-		return 0, nil
-	}
-	return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24, b[4:]
-}
-
-func get32b(b []byte) (uint64, []byte) {
-	if len(b) < 4 {
-		return 0, nil
-	}
-	return uint64(b[3]) | uint64(b[2])<<8 | uint64(b[1])<<16 | uint64(b[0])<<24, b[4:]
-}
-
-func get64l(b []byte) (uint64, []byte) {
-	if len(b) < 8 {
-		return 0, nil
-	}
-	return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56, b[8:]
-}
-
-func get64b(b []byte) (uint64, []byte) {
-	if len(b) < 8 {
-		return 0, nil
-	}
-	return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 | uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56, b[8:]
-}
-
-// parseCPU parses a profilez legacy profile and returns a newly
-// populated Profile.
-//
-// The general format for profilez samples is a sequence of words in
-// binary format. The first words are a header with the following data:
-//
-//	1st word -- 0
-//	2nd word -- 3
-//	3rd word -- 0 if a c++ application, 1 if a java application.
-//	4th word -- Sampling period (in microseconds).
-//	5th word -- Padding.
-func parseCPU(b []byte) (*Profile, error) {
-	var parse func([]byte) (uint64, []byte)
-	var n1, n2, n3, n4, n5 uint64
-	for _, parse = range cpuInts {
-		var tmp []byte
-		n1, tmp = parse(b)
-		n2, tmp = parse(tmp)
-		n3, tmp = parse(tmp)
-		n4, tmp = parse(tmp)
-		n5, tmp = parse(tmp)
-
-		if tmp != nil && n1 == 0 && n2 == 3 && n3 == 0 && n4 > 0 && n5 == 0 {
-			b = tmp
-			return cpuProfile(b, int64(n4), parse)
-		}
-		if tmp != nil && n1 == 0 && n2 == 3 && n3 == 1 && n4 > 0 && n5 == 0 {
-			b = tmp
-			return javaCPUProfile(b, int64(n4), parse)
-		}
-	}
-	return nil, errUnrecognized
-}
-
-// cpuProfile returns a new Profile from C++ profilez data.
-// b is the profile bytes after the header, period is the profiling
-// period, and parse is a function to parse 8-byte chunks from the
-// profile in its native endianness.
-func cpuProfile(b []byte, period int64, parse func(b []byte) (uint64, []byte)) (*Profile, error) {
-	p := &Profile{
-		Period:     period * 1000,
-		PeriodType: &ValueType{Type: "cpu", Unit: "nanoseconds"},
-		SampleType: []*ValueType{
-			{Type: "samples", Unit: "count"},
-			{Type: "cpu", Unit: "nanoseconds"},
-		},
-	}
-	var err error
-	if b, _, err = parseCPUSamples(b, parse, true, p); err != nil {
-		return nil, err
-	}
-
-	// If *most* samples have the same second-to-the-bottom frame, it
-	// strongly suggests that it is an uninteresting artifact of
-	// measurement -- a stack frame pushed by the signal handler. The
-	// bottom frame is always correct as it is picked up from the signal
-	// structure, not the stack. Check if this is the case and if so,
-	// remove.
-
-	// Remove up to two frames.
-	maxiter := 2
-	// Allow one different sample for this many samples with the same
-	// second-to-last frame.
-	similarSamples := 32
-	margin := len(p.Sample) / similarSamples
-
-	for iter := 0; iter < maxiter; iter++ {
-		addr1 := make(map[uint64]int)
-		for _, s := range p.Sample {
-			if len(s.Location) > 1 {
-				a := s.Location[1].Address
-				addr1[a] = addr1[a] + 1
-			}
-		}
-
-		for id1, count := range addr1 {
-			if count >= len(p.Sample)-margin {
-				// Found uninteresting frame, strip it out from all samples
-				for _, s := range p.Sample {
-					if len(s.Location) > 1 && s.Location[1].Address == id1 {
-						s.Location = append(s.Location[:1], s.Location[2:]...)
-					}
-				}
-				break
-			}
-		}
-	}
-
-	if err := p.ParseMemoryMap(bytes.NewBuffer(b)); err != nil {
-		return nil, err
-	}
-
-	cleanupDuplicateLocations(p)
-	return p, nil
-}
-
-func cleanupDuplicateLocations(p *Profile) {
-	// The profile handler may duplicate the leaf frame, because it gets
-	// its address both from stack unwinding and from the signal
-	// context. Detect this and delete the duplicate, which has been
-	// adjusted by -1. The leaf address should not be adjusted as it is
-	// not a call.
-	for _, s := range p.Sample {
-		if len(s.Location) > 1 && s.Location[0].Address == s.Location[1].Address+1 {
-			s.Location = append(s.Location[:1], s.Location[2:]...)
-		}
-	}
-}
-
-// parseCPUSamples parses a collection of profilez samples from a
-// profile.
-//
-// profilez samples are a repeated sequence of stack frames of the
-// form:
-//
-//	1st word -- The number of times this stack was encountered.
-//	2nd word -- The size of the stack (StackSize).
-//	3rd word -- The first address on the stack.
-//	...
-//	StackSize + 2 -- The last address on the stack
-//
-// The last stack trace is of the form:
-//
-//	1st word -- 0
-//	2nd word -- 1
-//	3rd word -- 0
-//
-// Addresses from stack traces may point to the next instruction after
-// each call. Optionally adjust by -1 to land somewhere on the actual
-// call (except for the leaf, which is not a call).
-func parseCPUSamples(b []byte, parse func(b []byte) (uint64, []byte), adjust bool, p *Profile) ([]byte, map[uint64]*Location, error) {
-	locs := make(map[uint64]*Location)
-	for len(b) > 0 {
-		var count, nstk uint64
-		count, b = parse(b)
-		nstk, b = parse(b)
-		if b == nil || nstk > uint64(len(b)/4) {
-			return nil, nil, errUnrecognized
-		}
-		var sloc []*Location
-		addrs := make([]uint64, nstk)
-		for i := 0; i < int(nstk); i++ {
-			addrs[i], b = parse(b)
-		}
-
-		if count == 0 && nstk == 1 && addrs[0] == 0 {
-			// End of data marker
-			break
-		}
-		for i, addr := range addrs {
-			if adjust && i > 0 {
-				addr--
-			}
-			loc := locs[addr]
-			if loc == nil {
-				loc = &Location{
-					Address: addr,
-				}
-				locs[addr] = loc
-				p.Location = append(p.Location, loc)
-			}
-			sloc = append(sloc, loc)
-		}
-		p.Sample = append(p.Sample,
-			&Sample{
-				Value:    []int64{int64(count), int64(count) * p.Period},
-				Location: sloc,
-			})
-	}
-	// Reached the end without finding the EOD marker.
-	return b, locs, nil
-}
-
-// parseHeap parses a heapz legacy or a growthz profile and
-// returns a newly populated Profile.
-func parseHeap(b []byte) (p *Profile, err error) {
-	s := bufio.NewScanner(bytes.NewBuffer(b))
-	if !s.Scan() {
-		if err := s.Err(); err != nil {
-			return nil, err
-		}
-		return nil, errUnrecognized
-	}
-	p = &Profile{}
-
-	sampling := ""
-	hasAlloc := false
-
-	line := s.Text()
-	p.PeriodType = &ValueType{Type: "space", Unit: "bytes"}
-	if header := heapHeaderRE.FindStringSubmatch(line); header != nil {
-		sampling, p.Period, hasAlloc, err = parseHeapHeader(line)
-		if err != nil {
-			return nil, err
-		}
-	} else if header = growthHeaderRE.FindStringSubmatch(line); header != nil {
-		p.Period = 1
-	} else if header = fragmentationHeaderRE.FindStringSubmatch(line); header != nil {
-		p.Period = 1
-	} else {
-		return nil, errUnrecognized
-	}
-
-	if hasAlloc {
-		// Put alloc before inuse so that default pprof selection
-		// will prefer inuse_space.
-		p.SampleType = []*ValueType{
-			{Type: "alloc_objects", Unit: "count"},
-			{Type: "alloc_space", Unit: "bytes"},
-			{Type: "inuse_objects", Unit: "count"},
-			{Type: "inuse_space", Unit: "bytes"},
-		}
-	} else {
-		p.SampleType = []*ValueType{
-			{Type: "objects", Unit: "count"},
-			{Type: "space", Unit: "bytes"},
-		}
-	}
-
-	locs := make(map[uint64]*Location)
-	for s.Scan() {
-		line := strings.TrimSpace(s.Text())
-
-		if isSpaceOrComment(line) {
-			continue
-		}
-
-		if isMemoryMapSentinel(line) {
-			break
-		}
-
-		value, blocksize, addrs, err := parseHeapSample(line, p.Period, sampling, hasAlloc)
-		if err != nil {
-			return nil, err
-		}
-
-		var sloc []*Location
-		for _, addr := range addrs {
-			// Addresses from stack traces point to the next instruction after
-			// each call. Adjust by -1 to land somewhere on the actual call.
-			addr--
-			loc := locs[addr]
-			if locs[addr] == nil {
-				loc = &Location{
-					Address: addr,
-				}
-				p.Location = append(p.Location, loc)
-				locs[addr] = loc
-			}
-			sloc = append(sloc, loc)
-		}
-
-		p.Sample = append(p.Sample, &Sample{
-			Value:    value,
-			Location: sloc,
-			NumLabel: map[string][]int64{"bytes": {blocksize}},
-		})
-	}
-	if err := s.Err(); err != nil {
-		return nil, err
-	}
-	if err := parseAdditionalSections(s, p); err != nil {
-		return nil, err
-	}
-	return p, nil
-}
-
-func parseHeapHeader(line string) (sampling string, period int64, hasAlloc bool, err error) {
-	header := heapHeaderRE.FindStringSubmatch(line)
-	if header == nil {
-		return "", 0, false, errUnrecognized
-	}
-
-	if len(header[6]) > 0 {
-		if period, err = strconv.ParseInt(header[6], 10, 64); err != nil {
-			return "", 0, false, errUnrecognized
-		}
-	}
-
-	if (header[3] != header[1] && header[3] != "0") || (header[4] != header[2] && header[4] != "0") {
-		hasAlloc = true
-	}
-
-	switch header[5] {
-	case "heapz_v2", "heap_v2":
-		return "v2", period, hasAlloc, nil
-	case "heapprofile":
-		return "", 1, hasAlloc, nil
-	case "heap":
-		return "v2", period / 2, hasAlloc, nil
-	default:
-		return "", 0, false, errUnrecognized
-	}
-}
-
-// parseHeapSample parses a single row from a heap profile into a new Sample.
-func parseHeapSample(line string, rate int64, sampling string, includeAlloc bool) (value []int64, blocksize int64, addrs []uint64, err error) {
-	sampleData := heapSampleRE.FindStringSubmatch(line)
-	if len(sampleData) != 6 {
-		return nil, 0, nil, fmt.Errorf("unexpected number of sample values: got %d, want 6", len(sampleData))
-	}
-
-	// This is a local-scoped helper function to avoid needing to pass
-	// around rate, sampling and many return parameters.
-	addValues := func(countString, sizeString string, label string) error {
-		count, err := strconv.ParseInt(countString, 10, 64)
-		if err != nil {
-			return fmt.Errorf("malformed sample: %s: %v", line, err)
-		}
-		size, err := strconv.ParseInt(sizeString, 10, 64)
-		if err != nil {
-			return fmt.Errorf("malformed sample: %s: %v", line, err)
-		}
-		if count == 0 && size != 0 {
-			return fmt.Errorf("%s count was 0 but %s bytes was %d", label, label, size)
-		}
-		if count != 0 {
-			blocksize = size / count
-			if sampling == "v2" {
-				count, size = scaleHeapSample(count, size, rate)
-			}
-		}
-		value = append(value, count, size)
-		return nil
-	}
-
-	if includeAlloc {
-		if err := addValues(sampleData[3], sampleData[4], "allocation"); err != nil {
-			return nil, 0, nil, err
-		}
-	}
-
-	if err := addValues(sampleData[1], sampleData[2], "inuse"); err != nil {
-		return nil, 0, nil, err
-	}
-
-	addrs, err = parseHexAddresses(sampleData[5])
-	if err != nil {
-		return nil, 0, nil, fmt.Errorf("malformed sample: %s: %v", line, err)
-	}
-
-	return value, blocksize, addrs, nil
-}
-
-// parseHexAddresses extracts hex numbers from a string, attempts to convert
-// each to an unsigned 64-bit number and returns the resulting numbers as a
-// slice, or an error if the string contains hex numbers which are too large to
-// handle (which means a malformed profile).
-func parseHexAddresses(s string) ([]uint64, error) {
-	hexStrings := hexNumberRE.FindAllString(s, -1)
-	var addrs []uint64
-	for _, s := range hexStrings {
-		if addr, err := strconv.ParseUint(s, 0, 64); err == nil {
-			addrs = append(addrs, addr)
-		} else {
-			return nil, fmt.Errorf("failed to parse as hex 64-bit number: %s", s)
-		}
-	}
-	return addrs, nil
-}
-
-// scaleHeapSample adjusts the data from a heapz Sample to
-// account for its probability of appearing in the collected
-// data. heapz profiles are a sampling of the memory allocations
-// requests in a program. We estimate the unsampled value by dividing
-// each collected sample by its probability of appearing in the
-// profile. heapz v2 profiles rely on a poisson process to determine
-// which samples to collect, based on the desired average collection
-// rate R. The probability of a sample of size S to appear in that
-// profile is 1-exp(-S/R).
-func scaleHeapSample(count, size, rate int64) (int64, int64) {
-	if count == 0 || size == 0 {
-		return 0, 0
-	}
-
-	if rate <= 1 {
-		// if rate==1 all samples were collected so no adjustment is needed.
-		// if rate<1 treat as unknown and skip scaling.
-		return count, size
-	}
-
-	avgSize := float64(size) / float64(count)
-	scale := 1 / (1 - math.Exp(-avgSize/float64(rate)))
-
-	return int64(float64(count) * scale), int64(float64(size) * scale)
-}
-
-// parseContention parses a mutex or contention profile. There are 2 cases:
-// "--- contentionz " for legacy C++ profiles (and backwards compatibility)
-// "--- mutex:" or "--- contention:" for profiles generated by the Go runtime.
-func parseContention(b []byte) (*Profile, error) {
-	s := bufio.NewScanner(bytes.NewBuffer(b))
-	if !s.Scan() {
-		if err := s.Err(); err != nil {
-			return nil, err
-		}
-		return nil, errUnrecognized
-	}
-
-	switch l := s.Text(); {
-	case strings.HasPrefix(l, "--- contentionz "):
-	case strings.HasPrefix(l, "--- mutex:"):
-	case strings.HasPrefix(l, "--- contention:"):
-	default:
-		return nil, errUnrecognized
-	}
-
-	p := &Profile{
-		PeriodType: &ValueType{Type: "contentions", Unit: "count"},
-		Period:     1,
-		SampleType: []*ValueType{
-			{Type: "contentions", Unit: "count"},
-			{Type: "delay", Unit: "nanoseconds"},
-		},
-	}
-
-	var cpuHz int64
-	// Parse text of the form "attribute = value" before the samples.
-	const delimiter = "="
-	for s.Scan() {
-		line := s.Text()
-		if line = strings.TrimSpace(line); isSpaceOrComment(line) {
-			continue
-		}
-		if strings.HasPrefix(line, "---") {
-			break
-		}
-		attr := strings.SplitN(line, delimiter, 2)
-		if len(attr) != 2 {
-			break
-		}
-		key, val := strings.TrimSpace(attr[0]), strings.TrimSpace(attr[1])
-		var err error
-		switch key {
-		case "cycles/second":
-			if cpuHz, err = strconv.ParseInt(val, 0, 64); err != nil {
-				return nil, errUnrecognized
-			}
-		case "sampling period":
-			if p.Period, err = strconv.ParseInt(val, 0, 64); err != nil {
-				return nil, errUnrecognized
-			}
-		case "ms since reset":
-			ms, err := strconv.ParseInt(val, 0, 64)
-			if err != nil {
-				return nil, errUnrecognized
-			}
-			p.DurationNanos = ms * 1000 * 1000
-		case "format":
-			// CPP contentionz profiles don't have format.
-			return nil, errUnrecognized
-		case "resolution":
-			// CPP contentionz profiles don't have resolution.
-			return nil, errUnrecognized
-		case "discarded samples":
-		default:
-			return nil, errUnrecognized
-		}
-	}
-	if err := s.Err(); err != nil {
-		return nil, err
-	}
-
-	locs := make(map[uint64]*Location)
-	for {
-		line := strings.TrimSpace(s.Text())
-		if strings.HasPrefix(line, "---") {
-			break
-		}
-		if !isSpaceOrComment(line) {
-			value, addrs, err := parseContentionSample(line, p.Period, cpuHz)
-			if err != nil {
-				return nil, err
-			}
-			var sloc []*Location
-			for _, addr := range addrs {
-				// Addresses from stack traces point to the next instruction after
-				// each call. Adjust by -1 to land somewhere on the actual call.
-				addr--
-				loc := locs[addr]
-				if locs[addr] == nil {
-					loc = &Location{
-						Address: addr,
-					}
-					p.Location = append(p.Location, loc)
-					locs[addr] = loc
-				}
-				sloc = append(sloc, loc)
-			}
-			p.Sample = append(p.Sample, &Sample{
-				Value:    value,
-				Location: sloc,
-			})
-		}
-		if !s.Scan() {
-			break
-		}
-	}
-	if err := s.Err(); err != nil {
-		return nil, err
-	}
-
-	if err := parseAdditionalSections(s, p); err != nil {
-		return nil, err
-	}
-
-	return p, nil
-}
-
-// parseContentionSample parses a single row from a contention profile
-// into a new Sample.
-func parseContentionSample(line string, period, cpuHz int64) (value []int64, addrs []uint64, err error) {
-	sampleData := contentionSampleRE.FindStringSubmatch(line)
-	if sampleData == nil {
-		return nil, nil, errUnrecognized
-	}
-
-	v1, err := strconv.ParseInt(sampleData[1], 10, 64)
-	if err != nil {
-		return nil, nil, fmt.Errorf("malformed sample: %s: %v", line, err)
-	}
-	v2, err := strconv.ParseInt(sampleData[2], 10, 64)
-	if err != nil {
-		return nil, nil, fmt.Errorf("malformed sample: %s: %v", line, err)
-	}
-
-	// Unsample values if period and cpuHz are available.
-	// - Delays are scaled to cycles and then to nanoseconds.
-	// - Contentions are scaled to cycles.
-	if period > 0 {
-		if cpuHz > 0 {
-			cpuGHz := float64(cpuHz) / 1e9
-			v1 = int64(float64(v1) * float64(period) / cpuGHz)
-		}
-		v2 = v2 * period
-	}
-
-	value = []int64{v2, v1}
-	addrs, err = parseHexAddresses(sampleData[3])
-	if err != nil {
-		return nil, nil, fmt.Errorf("malformed sample: %s: %v", line, err)
-	}
-
-	return value, addrs, nil
-}
-
-// parseThread parses a Threadz profile and returns a new Profile.
-func parseThread(b []byte) (*Profile, error) {
-	s := bufio.NewScanner(bytes.NewBuffer(b))
-	// Skip past comments and empty lines seeking a real header.
-	for s.Scan() && isSpaceOrComment(s.Text()) {
-	}
-
-	line := s.Text()
-	if m := threadzStartRE.FindStringSubmatch(line); m != nil {
-		// Advance over initial comments until first stack trace.
-		for s.Scan() {
-			if line = s.Text(); isMemoryMapSentinel(line) || strings.HasPrefix(line, "-") {
-				break
-			}
-		}
-	} else if t := threadStartRE.FindStringSubmatch(line); len(t) != 4 {
-		return nil, errUnrecognized
-	}
-
-	p := &Profile{
-		SampleType: []*ValueType{{Type: "thread", Unit: "count"}},
-		PeriodType: &ValueType{Type: "thread", Unit: "count"},
-		Period:     1,
-	}
-
-	locs := make(map[uint64]*Location)
-	// Recognize each thread and populate profile samples.
-	for !isMemoryMapSentinel(line) {
-		if strings.HasPrefix(line, "---- no stack trace for") {
-			break
-		}
-		if t := threadStartRE.FindStringSubmatch(line); len(t) != 4 {
-			return nil, errUnrecognized
-		}
-
-		var addrs []uint64
-		var err error
-		line, addrs, err = parseThreadSample(s)
-		if err != nil {
-			return nil, err
-		}
-		if len(addrs) == 0 {
-			// We got a --same as previous threads--. Bump counters.
-			if len(p.Sample) > 0 {
-				s := p.Sample[len(p.Sample)-1]
-				s.Value[0]++
-			}
-			continue
-		}
-
-		var sloc []*Location
-		for i, addr := range addrs {
-			// Addresses from stack traces point to the next instruction after
-			// each call. Adjust by -1 to land somewhere on the actual call
-			// (except for the leaf, which is not a call).
-			if i > 0 {
-				addr--
-			}
-			loc := locs[addr]
-			if locs[addr] == nil {
-				loc = &Location{
-					Address: addr,
-				}
-				p.Location = append(p.Location, loc)
-				locs[addr] = loc
-			}
-			sloc = append(sloc, loc)
-		}
-
-		p.Sample = append(p.Sample, &Sample{
-			Value:    []int64{1},
-			Location: sloc,
-		})
-	}
-
-	if err := parseAdditionalSections(s, p); err != nil {
-		return nil, err
-	}
-
-	cleanupDuplicateLocations(p)
-	return p, nil
-}
-
-// parseThreadSample parses a symbolized or unsymbolized stack trace.
-// Returns the first line after the traceback, the sample (or nil if
-// it hits a 'same-as-previous' marker) and an error.
-func parseThreadSample(s *bufio.Scanner) (nextl string, addrs []uint64, err error) {
-	var line string
-	sameAsPrevious := false
-	for s.Scan() {
-		line = strings.TrimSpace(s.Text())
-		if line == "" {
-			continue
-		}
-
-		if strings.HasPrefix(line, "---") {
-			break
-		}
-		if strings.Contains(line, "same as previous thread") {
-			sameAsPrevious = true
-			continue
-		}
-
-		curAddrs, err := parseHexAddresses(line)
-		if err != nil {
-			return "", nil, fmt.Errorf("malformed sample: %s: %v", line, err)
-		}
-		addrs = append(addrs, curAddrs...)
-	}
-	if err := s.Err(); err != nil {
-		return "", nil, err
-	}
-	if sameAsPrevious {
-		return line, nil, nil
-	}
-	return line, addrs, nil
-}
-
-// parseAdditionalSections parses any additional sections in the
-// profile, ignoring any unrecognized sections.
-func parseAdditionalSections(s *bufio.Scanner, p *Profile) error {
-	for !isMemoryMapSentinel(s.Text()) && s.Scan() {
-	}
-	if err := s.Err(); err != nil {
-		return err
-	}
-	return p.ParseMemoryMapFromScanner(s)
-}
-
-// ParseProcMaps parses a memory map in the format of /proc/self/maps.
-// ParseMemoryMap should be called after setting on a profile to
-// associate locations to the corresponding mapping based on their
-// address.
-func ParseProcMaps(rd io.Reader) ([]*Mapping, error) {
-	s := bufio.NewScanner(rd)
-	return parseProcMapsFromScanner(s)
-}
-
-func parseProcMapsFromScanner(s *bufio.Scanner) ([]*Mapping, error) {
-	var mapping []*Mapping
-
-	var attrs []string
-	const delimiter = "="
-	r := strings.NewReplacer()
-	for s.Scan() {
-		line := r.Replace(removeLoggingInfo(s.Text()))
-		m, err := parseMappingEntry(line)
-		if err != nil {
-			if err == errUnrecognized {
-				// Recognize assignments of the form: attr=value, and replace
-				// $attr with value on subsequent mappings.
-				if attr := strings.SplitN(line, delimiter, 2); len(attr) == 2 {
-					attrs = append(attrs, "$"+strings.TrimSpace(attr[0]), strings.TrimSpace(attr[1]))
-					r = strings.NewReplacer(attrs...)
-				}
-				// Ignore any unrecognized entries
-				continue
-			}
-			return nil, err
-		}
-		if m == nil {
-			continue
-		}
-		mapping = append(mapping, m)
-	}
-	if err := s.Err(); err != nil {
-		return nil, err
-	}
-	return mapping, nil
-}
-
-// removeLoggingInfo detects and removes log prefix entries generated
-// by the glog package. If no logging prefix is detected, the string
-// is returned unmodified.
-func removeLoggingInfo(line string) string {
-	if match := logInfoRE.FindStringIndex(line); match != nil {
-		return line[match[1]:]
-	}
-	return line
-}
-
-// ParseMemoryMap parses a memory map in the format of
-// /proc/self/maps, and overrides the mappings in the current profile.
-// It renumbers the samples and locations in the profile correspondingly.
-func (p *Profile) ParseMemoryMap(rd io.Reader) error {
-	return p.ParseMemoryMapFromScanner(bufio.NewScanner(rd))
-}
-
-// ParseMemoryMapFromScanner parses a memory map in the format of
-// /proc/self/maps or a variety of legacy format, and overrides the
-// mappings in the current profile.  It renumbers the samples and
-// locations in the profile correspondingly.
-func (p *Profile) ParseMemoryMapFromScanner(s *bufio.Scanner) error {
-	mapping, err := parseProcMapsFromScanner(s)
-	if err != nil {
-		return err
-	}
-	p.Mapping = append(p.Mapping, mapping...)
-	p.massageMappings()
-	p.remapLocationIDs()
-	p.remapFunctionIDs()
-	p.remapMappingIDs()
-	return nil
-}
-
-func parseMappingEntry(l string) (*Mapping, error) {
-	var start, end, perm, file, offset, buildID string
-	if me := procMapsRE.FindStringSubmatch(l); len(me) == 6 {
-		start, end, perm, offset, file = me[1], me[2], me[3], me[4], me[5]
-	} else if me := briefMapsRE.FindStringSubmatch(l); len(me) == 7 {
-		start, end, perm, file, offset, buildID = me[1], me[2], me[3], me[4], me[5], me[6]
-	} else {
-		return nil, errUnrecognized
-	}
-
-	var err error
-	mapping := &Mapping{
-		File:    file,
-		BuildID: buildID,
-	}
-	if perm != "" && !strings.Contains(perm, "x") {
-		// Skip non-executable entries.
-		return nil, nil
-	}
-	if mapping.Start, err = strconv.ParseUint(start, 16, 64); err != nil {
-		return nil, errUnrecognized
-	}
-	if mapping.Limit, err = strconv.ParseUint(end, 16, 64); err != nil {
-		return nil, errUnrecognized
-	}
-	if offset != "" {
-		if mapping.Offset, err = strconv.ParseUint(offset, 16, 64); err != nil {
-			return nil, errUnrecognized
-		}
-	}
-	return mapping, nil
-}
-
-var memoryMapSentinels = []string{
-	"--- Memory map: ---",
-	"MAPPED_LIBRARIES:",
-}
-
-// isMemoryMapSentinel returns true if the string contains one of the
-// known sentinels for memory map information.
-func isMemoryMapSentinel(line string) bool {
-	for _, s := range memoryMapSentinels {
-		if strings.Contains(line, s) {
-			return true
-		}
-	}
-	return false
-}
-
-func (p *Profile) addLegacyFrameInfo() {
-	switch {
-	case isProfileType(p, heapzSampleTypes):
-		p.DropFrames, p.KeepFrames = allocRxStr, allocSkipRxStr
-	case isProfileType(p, contentionzSampleTypes):
-		p.DropFrames, p.KeepFrames = lockRxStr, ""
-	default:
-		p.DropFrames, p.KeepFrames = cpuProfilerRxStr, ""
-	}
-}
-
-var heapzSampleTypes = [][]string{
-	{"allocations", "size"}, // early Go pprof profiles
-	{"objects", "space"},
-	{"inuse_objects", "inuse_space"},
-	{"alloc_objects", "alloc_space"},
-	{"alloc_objects", "alloc_space", "inuse_objects", "inuse_space"}, // Go pprof legacy profiles
-}
-var contentionzSampleTypes = [][]string{
-	{"contentions", "delay"},
-}
-
-func isProfileType(p *Profile, types [][]string) bool {
-	st := p.SampleType
-nextType:
-	for _, t := range types {
-		if len(st) != len(t) {
-			continue
-		}
-
-		for i := range st {
-			if st[i].Type != t[i] {
-				continue nextType
-			}
-		}
-		return true
-	}
-	return false
-}
-
-var allocRxStr = strings.Join([]string{
-	// POSIX entry points.
-	`calloc`,
-	`cfree`,
-	`malloc`,
-	`free`,
-	`memalign`,
-	`do_memalign`,
-	`(__)?posix_memalign`,
-	`pvalloc`,
-	`valloc`,
-	`realloc`,
-
-	// TC malloc.
-	`tcmalloc::.*`,
-	`tc_calloc`,
-	`tc_cfree`,
-	`tc_malloc`,
-	`tc_free`,
-	`tc_memalign`,
-	`tc_posix_memalign`,
-	`tc_pvalloc`,
-	`tc_valloc`,
-	`tc_realloc`,
-	`tc_new`,
-	`tc_delete`,
-	`tc_newarray`,
-	`tc_deletearray`,
-	`tc_new_nothrow`,
-	`tc_newarray_nothrow`,
-
-	// Memory-allocation routines on OS X.
-	`malloc_zone_malloc`,
-	`malloc_zone_calloc`,
-	`malloc_zone_valloc`,
-	`malloc_zone_realloc`,
-	`malloc_zone_memalign`,
-	`malloc_zone_free`,
-
-	// Go runtime
-	`runtime\..*`,
-
-	// Other misc. memory allocation routines
-	`BaseArena::.*`,
-	`(::)?do_malloc_no_errno`,
-	`(::)?do_malloc_pages`,
-	`(::)?do_malloc`,
-	`DoSampledAllocation`,
-	`MallocedMemBlock::MallocedMemBlock`,
-	`_M_allocate`,
-	`__builtin_(vec_)?delete`,
-	`__builtin_(vec_)?new`,
-	`__gnu_cxx::new_allocator::allocate`,
-	`__libc_malloc`,
-	`__malloc_alloc_template::allocate`,
-	`allocate`,
-	`cpp_alloc`,
-	`operator new(\[\])?`,
-	`simple_alloc::allocate`,
-}, `|`)
-
-var allocSkipRxStr = strings.Join([]string{
-	// Preserve Go runtime frames that appear in the middle/bottom of
-	// the stack.
-	`runtime\.panic`,
-	`runtime\.reflectcall`,
-	`runtime\.call[0-9]*`,
-}, `|`)
-
-var cpuProfilerRxStr = strings.Join([]string{
-	`ProfileData::Add`,
-	`ProfileData::prof_handler`,
-	`CpuProfiler::prof_handler`,
-	`__pthread_sighandler`,
-	`__restore`,
-}, `|`)
-
-var lockRxStr = strings.Join([]string{
-	`RecordLockProfileData`,
-	`(base::)?RecordLockProfileData.*`,
-	`(base::)?SubmitMutexProfileData.*`,
-	`(base::)?SubmitSpinLockProfileData.*`,
-	`(base::Mutex::)?AwaitCommon.*`,
-	`(base::Mutex::)?Unlock.*`,
-	`(base::Mutex::)?UnlockSlow.*`,
-	`(base::Mutex::)?ReaderUnlock.*`,
-	`(base::MutexLock::)?~MutexLock.*`,
-	`(Mutex::)?AwaitCommon.*`,
-	`(Mutex::)?Unlock.*`,
-	`(Mutex::)?UnlockSlow.*`,
-	`(Mutex::)?ReaderUnlock.*`,
-	`(MutexLock::)?~MutexLock.*`,
-	`(SpinLock::)?Unlock.*`,
-	`(SpinLock::)?SlowUnlock.*`,
-	`(SpinLockHolder::)?~SpinLockHolder.*`,
-}, `|`)
diff --git a/vendor/github.com/google/pprof/profile/merge.go b/vendor/github.com/google/pprof/profile/merge.go
deleted file mode 100644
index ba4d74640..000000000
--- a/vendor/github.com/google/pprof/profile/merge.go
+++ /dev/null
@@ -1,674 +0,0 @@
-// 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 profile
-
-import (
-	"encoding/binary"
-	"fmt"
-	"sort"
-	"strconv"
-	"strings"
-)
-
-// Compact performs garbage collection on a profile to remove any
-// unreferenced fields. This is useful to reduce the size of a profile
-// after samples or locations have been removed.
-func (p *Profile) Compact() *Profile {
-	p, _ = Merge([]*Profile{p})
-	return p
-}
-
-// Merge merges all the profiles in profs into a single Profile.
-// Returns a new profile independent of the input profiles. The merged
-// profile is compacted to eliminate unused samples, locations,
-// functions and mappings. Profiles must have identical profile sample
-// and period types or the merge will fail. profile.Period of the
-// resulting profile will be the maximum of all profiles, and
-// profile.TimeNanos will be the earliest nonzero one. Merges are
-// associative with the caveat of the first profile having some
-// specialization in how headers are combined. There may be other
-// subtleties now or in the future regarding associativity.
-func Merge(srcs []*Profile) (*Profile, error) {
-	if len(srcs) == 0 {
-		return nil, fmt.Errorf("no profiles to merge")
-	}
-	p, err := combineHeaders(srcs)
-	if err != nil {
-		return nil, err
-	}
-
-	pm := &profileMerger{
-		p:         p,
-		samples:   make(map[sampleKey]*Sample, len(srcs[0].Sample)),
-		locations: make(map[locationKey]*Location, len(srcs[0].Location)),
-		functions: make(map[functionKey]*Function, len(srcs[0].Function)),
-		mappings:  make(map[mappingKey]*Mapping, len(srcs[0].Mapping)),
-	}
-
-	for _, src := range srcs {
-		// Clear the profile-specific hash tables
-		pm.locationsByID = makeLocationIDMap(len(src.Location))
-		pm.functionsByID = make(map[uint64]*Function, len(src.Function))
-		pm.mappingsByID = make(map[uint64]mapInfo, len(src.Mapping))
-
-		if len(pm.mappings) == 0 && len(src.Mapping) > 0 {
-			// The Mapping list has the property that the first mapping
-			// represents the main binary. Take the first Mapping we see,
-			// otherwise the operations below will add mappings in an
-			// arbitrary order.
-			pm.mapMapping(src.Mapping[0])
-		}
-
-		for _, s := range src.Sample {
-			if !isZeroSample(s) {
-				pm.mapSample(s)
-			}
-		}
-	}
-
-	for _, s := range p.Sample {
-		if isZeroSample(s) {
-			// If there are any zero samples, re-merge the profile to GC
-			// them.
-			return Merge([]*Profile{p})
-		}
-	}
-
-	return p, nil
-}
-
-// Normalize normalizes the source profile by multiplying each value in profile by the
-// ratio of the sum of the base profile's values of that sample type to the sum of the
-// source profile's value of that sample type.
-func (p *Profile) Normalize(pb *Profile) error {
-
-	if err := p.compatible(pb); err != nil {
-		return err
-	}
-
-	baseVals := make([]int64, len(p.SampleType))
-	for _, s := range pb.Sample {
-		for i, v := range s.Value {
-			baseVals[i] += v
-		}
-	}
-
-	srcVals := make([]int64, len(p.SampleType))
-	for _, s := range p.Sample {
-		for i, v := range s.Value {
-			srcVals[i] += v
-		}
-	}
-
-	normScale := make([]float64, len(baseVals))
-	for i := range baseVals {
-		if srcVals[i] == 0 {
-			normScale[i] = 0.0
-		} else {
-			normScale[i] = float64(baseVals[i]) / float64(srcVals[i])
-		}
-	}
-	p.ScaleN(normScale)
-	return nil
-}
-
-func isZeroSample(s *Sample) bool {
-	for _, v := range s.Value {
-		if v != 0 {
-			return false
-		}
-	}
-	return true
-}
-
-type profileMerger struct {
-	p *Profile
-
-	// Memoization tables within a profile.
-	locationsByID locationIDMap
-	functionsByID map[uint64]*Function
-	mappingsByID  map[uint64]mapInfo
-
-	// Memoization tables for profile entities.
-	samples   map[sampleKey]*Sample
-	locations map[locationKey]*Location
-	functions map[functionKey]*Function
-	mappings  map[mappingKey]*Mapping
-}
-
-type mapInfo struct {
-	m      *Mapping
-	offset int64
-}
-
-func (pm *profileMerger) mapSample(src *Sample) *Sample {
-	// Check memoization table
-	k := pm.sampleKey(src)
-	if ss, ok := pm.samples[k]; ok {
-		for i, v := range src.Value {
-			ss.Value[i] += v
-		}
-		return ss
-	}
-
-	// Make new sample.
-	s := &Sample{
-		Location: make([]*Location, len(src.Location)),
-		Value:    make([]int64, len(src.Value)),
-		Label:    make(map[string][]string, len(src.Label)),
-		NumLabel: make(map[string][]int64, len(src.NumLabel)),
-		NumUnit:  make(map[string][]string, len(src.NumLabel)),
-	}
-	for i, l := range src.Location {
-		s.Location[i] = pm.mapLocation(l)
-	}
-	for k, v := range src.Label {
-		vv := make([]string, len(v))
-		copy(vv, v)
-		s.Label[k] = vv
-	}
-	for k, v := range src.NumLabel {
-		u := src.NumUnit[k]
-		vv := make([]int64, len(v))
-		uu := make([]string, len(u))
-		copy(vv, v)
-		copy(uu, u)
-		s.NumLabel[k] = vv
-		s.NumUnit[k] = uu
-	}
-	copy(s.Value, src.Value)
-	pm.samples[k] = s
-	pm.p.Sample = append(pm.p.Sample, s)
-	return s
-}
-
-func (pm *profileMerger) sampleKey(sample *Sample) sampleKey {
-	// Accumulate contents into a string.
-	var buf strings.Builder
-	buf.Grow(64) // Heuristic to avoid extra allocs
-
-	// encode a number
-	putNumber := func(v uint64) {
-		var num [binary.MaxVarintLen64]byte
-		n := binary.PutUvarint(num[:], v)
-		buf.Write(num[:n])
-	}
-
-	// encode a string prefixed with its length.
-	putDelimitedString := func(s string) {
-		putNumber(uint64(len(s)))
-		buf.WriteString(s)
-	}
-
-	for _, l := range sample.Location {
-		// Get the location in the merged profile, which may have a different ID.
-		if loc := pm.mapLocation(l); loc != nil {
-			putNumber(loc.ID)
-		}
-	}
-	putNumber(0) // Delimiter
-
-	for _, l := range sortedKeys1(sample.Label) {
-		putDelimitedString(l)
-		values := sample.Label[l]
-		putNumber(uint64(len(values)))
-		for _, v := range values {
-			putDelimitedString(v)
-		}
-	}
-
-	for _, l := range sortedKeys2(sample.NumLabel) {
-		putDelimitedString(l)
-		values := sample.NumLabel[l]
-		putNumber(uint64(len(values)))
-		for _, v := range values {
-			putNumber(uint64(v))
-		}
-		units := sample.NumUnit[l]
-		putNumber(uint64(len(units)))
-		for _, v := range units {
-			putDelimitedString(v)
-		}
-	}
-
-	return sampleKey(buf.String())
-}
-
-type sampleKey string
-
-// sortedKeys1 returns the sorted keys found in a string->[]string map.
-//
-// Note: this is currently non-generic since github pprof runs golint,
-// which does not support generics. When that issue is fixed, it can
-// be merged with sortedKeys2 and made into a generic function.
-func sortedKeys1(m map[string][]string) []string {
-	if len(m) == 0 {
-		return nil
-	}
-	keys := make([]string, 0, len(m))
-	for k := range m {
-		keys = append(keys, k)
-	}
-	sort.Strings(keys)
-	return keys
-}
-
-// sortedKeys2 returns the sorted keys found in a string->[]int64 map.
-//
-// Note: this is currently non-generic since github pprof runs golint,
-// which does not support generics. When that issue is fixed, it can
-// be merged with sortedKeys1 and made into a generic function.
-func sortedKeys2(m map[string][]int64) []string {
-	if len(m) == 0 {
-		return nil
-	}
-	keys := make([]string, 0, len(m))
-	for k := range m {
-		keys = append(keys, k)
-	}
-	sort.Strings(keys)
-	return keys
-}
-
-func (pm *profileMerger) mapLocation(src *Location) *Location {
-	if src == nil {
-		return nil
-	}
-
-	if l := pm.locationsByID.get(src.ID); l != nil {
-		return l
-	}
-
-	mi := pm.mapMapping(src.Mapping)
-	l := &Location{
-		ID:       uint64(len(pm.p.Location) + 1),
-		Mapping:  mi.m,
-		Address:  uint64(int64(src.Address) + mi.offset),
-		Line:     make([]Line, len(src.Line)),
-		IsFolded: src.IsFolded,
-	}
-	for i, ln := range src.Line {
-		l.Line[i] = pm.mapLine(ln)
-	}
-	// Check memoization table. Must be done on the remapped location to
-	// account for the remapped mapping ID.
-	k := l.key()
-	if ll, ok := pm.locations[k]; ok {
-		pm.locationsByID.set(src.ID, ll)
-		return ll
-	}
-	pm.locationsByID.set(src.ID, l)
-	pm.locations[k] = l
-	pm.p.Location = append(pm.p.Location, l)
-	return l
-}
-
-// key generates locationKey to be used as a key for maps.
-func (l *Location) key() locationKey {
-	key := locationKey{
-		addr:     l.Address,
-		isFolded: l.IsFolded,
-	}
-	if l.Mapping != nil {
-		// Normalizes address to handle address space randomization.
-		key.addr -= l.Mapping.Start
-		key.mappingID = l.Mapping.ID
-	}
-	lines := make([]string, len(l.Line)*3)
-	for i, line := range l.Line {
-		if line.Function != nil {
-			lines[i*2] = strconv.FormatUint(line.Function.ID, 16)
-		}
-		lines[i*2+1] = strconv.FormatInt(line.Line, 16)
-		lines[i*2+2] = strconv.FormatInt(line.Column, 16)
-	}
-	key.lines = strings.Join(lines, "|")
-	return key
-}
-
-type locationKey struct {
-	addr, mappingID uint64
-	lines           string
-	isFolded        bool
-}
-
-func (pm *profileMerger) mapMapping(src *Mapping) mapInfo {
-	if src == nil {
-		return mapInfo{}
-	}
-
-	if mi, ok := pm.mappingsByID[src.ID]; ok {
-		return mi
-	}
-
-	// Check memoization tables.
-	mk := src.key()
-	if m, ok := pm.mappings[mk]; ok {
-		mi := mapInfo{m, int64(m.Start) - int64(src.Start)}
-		pm.mappingsByID[src.ID] = mi
-		return mi
-	}
-	m := &Mapping{
-		ID:                     uint64(len(pm.p.Mapping) + 1),
-		Start:                  src.Start,
-		Limit:                  src.Limit,
-		Offset:                 src.Offset,
-		File:                   src.File,
-		KernelRelocationSymbol: src.KernelRelocationSymbol,
-		BuildID:                src.BuildID,
-		HasFunctions:           src.HasFunctions,
-		HasFilenames:           src.HasFilenames,
-		HasLineNumbers:         src.HasLineNumbers,
-		HasInlineFrames:        src.HasInlineFrames,
-	}
-	pm.p.Mapping = append(pm.p.Mapping, m)
-
-	// Update memoization tables.
-	pm.mappings[mk] = m
-	mi := mapInfo{m, 0}
-	pm.mappingsByID[src.ID] = mi
-	return mi
-}
-
-// key generates encoded strings of Mapping to be used as a key for
-// maps.
-func (m *Mapping) key() mappingKey {
-	// Normalize addresses to handle address space randomization.
-	// Round up to next 4K boundary to avoid minor discrepancies.
-	const mapsizeRounding = 0x1000
-
-	size := m.Limit - m.Start
-	size = size + mapsizeRounding - 1
-	size = size - (size % mapsizeRounding)
-	key := mappingKey{
-		size:   size,
-		offset: m.Offset,
-	}
-
-	switch {
-	case m.BuildID != "":
-		key.buildIDOrFile = m.BuildID
-	case m.File != "":
-		key.buildIDOrFile = m.File
-	default:
-		// A mapping containing neither build ID nor file name is a fake mapping. A
-		// key with empty buildIDOrFile is used for fake mappings so that they are
-		// treated as the same mapping during merging.
-	}
-	return key
-}
-
-type mappingKey struct {
-	size, offset  uint64
-	buildIDOrFile string
-}
-
-func (pm *profileMerger) mapLine(src Line) Line {
-	ln := Line{
-		Function: pm.mapFunction(src.Function),
-		Line:     src.Line,
-		Column:   src.Column,
-	}
-	return ln
-}
-
-func (pm *profileMerger) mapFunction(src *Function) *Function {
-	if src == nil {
-		return nil
-	}
-	if f, ok := pm.functionsByID[src.ID]; ok {
-		return f
-	}
-	k := src.key()
-	if f, ok := pm.functions[k]; ok {
-		pm.functionsByID[src.ID] = f
-		return f
-	}
-	f := &Function{
-		ID:         uint64(len(pm.p.Function) + 1),
-		Name:       src.Name,
-		SystemName: src.SystemName,
-		Filename:   src.Filename,
-		StartLine:  src.StartLine,
-	}
-	pm.functions[k] = f
-	pm.functionsByID[src.ID] = f
-	pm.p.Function = append(pm.p.Function, f)
-	return f
-}
-
-// key generates a struct to be used as a key for maps.
-func (f *Function) key() functionKey {
-	return functionKey{
-		f.StartLine,
-		f.Name,
-		f.SystemName,
-		f.Filename,
-	}
-}
-
-type functionKey struct {
-	startLine                  int64
-	name, systemName, fileName string
-}
-
-// combineHeaders checks that all profiles can be merged and returns
-// their combined profile.
-func combineHeaders(srcs []*Profile) (*Profile, error) {
-	for _, s := range srcs[1:] {
-		if err := srcs[0].compatible(s); err != nil {
-			return nil, err
-		}
-	}
-
-	var timeNanos, durationNanos, period int64
-	var comments []string
-	seenComments := map[string]bool{}
-	var docURL string
-	var defaultSampleType string
-	for _, s := range srcs {
-		if timeNanos == 0 || s.TimeNanos < timeNanos {
-			timeNanos = s.TimeNanos
-		}
-		durationNanos += s.DurationNanos
-		if period == 0 || period < s.Period {
-			period = s.Period
-		}
-		for _, c := range s.Comments {
-			if seen := seenComments[c]; !seen {
-				comments = append(comments, c)
-				seenComments[c] = true
-			}
-		}
-		if defaultSampleType == "" {
-			defaultSampleType = s.DefaultSampleType
-		}
-		if docURL == "" {
-			docURL = s.DocURL
-		}
-	}
-
-	p := &Profile{
-		SampleType: make([]*ValueType, len(srcs[0].SampleType)),
-
-		DropFrames: srcs[0].DropFrames,
-		KeepFrames: srcs[0].KeepFrames,
-
-		TimeNanos:     timeNanos,
-		DurationNanos: durationNanos,
-		PeriodType:    srcs[0].PeriodType,
-		Period:        period,
-
-		Comments:          comments,
-		DefaultSampleType: defaultSampleType,
-		DocURL:            docURL,
-	}
-	copy(p.SampleType, srcs[0].SampleType)
-	return p, nil
-}
-
-// compatible determines if two profiles can be compared/merged.
-// returns nil if the profiles are compatible; otherwise an error with
-// details on the incompatibility.
-func (p *Profile) compatible(pb *Profile) error {
-	if !equalValueType(p.PeriodType, pb.PeriodType) {
-		return fmt.Errorf("incompatible period types %v and %v", p.PeriodType, pb.PeriodType)
-	}
-
-	if len(p.SampleType) != len(pb.SampleType) {
-		return fmt.Errorf("incompatible sample types %v and %v", p.SampleType, pb.SampleType)
-	}
-
-	for i := range p.SampleType {
-		if !equalValueType(p.SampleType[i], pb.SampleType[i]) {
-			return fmt.Errorf("incompatible sample types %v and %v", p.SampleType, pb.SampleType)
-		}
-	}
-	return nil
-}
-
-// equalValueType returns true if the two value types are semantically
-// equal. It ignores the internal fields used during encode/decode.
-func equalValueType(st1, st2 *ValueType) bool {
-	return st1.Type == st2.Type && st1.Unit == st2.Unit
-}
-
-// locationIDMap is like a map[uint64]*Location, but provides efficiency for
-// ids that are densely numbered, which is often the case.
-type locationIDMap struct {
-	dense  []*Location          // indexed by id for id < len(dense)
-	sparse map[uint64]*Location // indexed by id for id >= len(dense)
-}
-
-func makeLocationIDMap(n int) locationIDMap {
-	return locationIDMap{
-		dense:  make([]*Location, n),
-		sparse: map[uint64]*Location{},
-	}
-}
-
-func (lm locationIDMap) get(id uint64) *Location {
-	if id < uint64(len(lm.dense)) {
-		return lm.dense[int(id)]
-	}
-	return lm.sparse[id]
-}
-
-func (lm locationIDMap) set(id uint64, loc *Location) {
-	if id < uint64(len(lm.dense)) {
-		lm.dense[id] = loc
-		return
-	}
-	lm.sparse[id] = loc
-}
-
-// CompatibilizeSampleTypes makes profiles compatible to be compared/merged. It
-// keeps sample types that appear in all profiles only and drops/reorders the
-// sample types as necessary.
-//
-// In the case of sample types order is not the same for given profiles the
-// order is derived from the first profile.
-//
-// Profiles are modified in-place.
-//
-// It returns an error if the sample type's intersection is empty.
-func CompatibilizeSampleTypes(ps []*Profile) error {
-	sTypes := commonSampleTypes(ps)
-	if len(sTypes) == 0 {
-		return fmt.Errorf("profiles have empty common sample type list")
-	}
-	for _, p := range ps {
-		if err := compatibilizeSampleTypes(p, sTypes); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// commonSampleTypes returns sample types that appear in all profiles in the
-// order how they ordered in the first profile.
-func commonSampleTypes(ps []*Profile) []string {
-	if len(ps) == 0 {
-		return nil
-	}
-	sTypes := map[string]int{}
-	for _, p := range ps {
-		for _, st := range p.SampleType {
-			sTypes[st.Type]++
-		}
-	}
-	var res []string
-	for _, st := range ps[0].SampleType {
-		if sTypes[st.Type] == len(ps) {
-			res = append(res, st.Type)
-		}
-	}
-	return res
-}
-
-// compatibilizeSampleTypes drops sample types that are not present in sTypes
-// list and reorder them if needed.
-//
-// It sets DefaultSampleType to sType[0] if it is not in sType list.
-//
-// It assumes that all sample types from the sTypes list are present in the
-// given profile otherwise it returns an error.
-func compatibilizeSampleTypes(p *Profile, sTypes []string) error {
-	if len(sTypes) == 0 {
-		return fmt.Errorf("sample type list is empty")
-	}
-	defaultSampleType := sTypes[0]
-	reMap, needToModify := make([]int, len(sTypes)), false
-	for i, st := range sTypes {
-		if st == p.DefaultSampleType {
-			defaultSampleType = p.DefaultSampleType
-		}
-		idx := searchValueType(p.SampleType, st)
-		if idx < 0 {
-			return fmt.Errorf("%q sample type is not found in profile", st)
-		}
-		reMap[i] = idx
-		if idx != i {
-			needToModify = true
-		}
-	}
-	if !needToModify && len(sTypes) == len(p.SampleType) {
-		return nil
-	}
-	p.DefaultSampleType = defaultSampleType
-	oldSampleTypes := p.SampleType
-	p.SampleType = make([]*ValueType, len(sTypes))
-	for i, idx := range reMap {
-		p.SampleType[i] = oldSampleTypes[idx]
-	}
-	values := make([]int64, len(sTypes))
-	for _, s := range p.Sample {
-		for i, idx := range reMap {
-			values[i] = s.Value[idx]
-		}
-		s.Value = s.Value[:len(values)]
-		copy(s.Value, values)
-	}
-	return nil
-}
-
-func searchValueType(vts []*ValueType, s string) int {
-	for i, vt := range vts {
-		if vt.Type == s {
-			return i
-		}
-	}
-	return -1
-}
diff --git a/vendor/github.com/google/pprof/profile/profile.go b/vendor/github.com/google/pprof/profile/profile.go
deleted file mode 100644
index f47a24390..000000000
--- a/vendor/github.com/google/pprof/profile/profile.go
+++ /dev/null
@@ -1,869 +0,0 @@
-// 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 profile provides a representation of profile.proto and
-// methods to encode/decode profiles in this format.
-package profile
-
-import (
-	"bytes"
-	"compress/gzip"
-	"fmt"
-	"io"
-	"math"
-	"path/filepath"
-	"regexp"
-	"sort"
-	"strings"
-	"sync"
-	"time"
-)
-
-// Profile is an in-memory representation of profile.proto.
-type Profile struct {
-	SampleType        []*ValueType
-	DefaultSampleType string
-	Sample            []*Sample
-	Mapping           []*Mapping
-	Location          []*Location
-	Function          []*Function
-	Comments          []string
-	DocURL            string
-
-	DropFrames string
-	KeepFrames string
-
-	TimeNanos     int64
-	DurationNanos int64
-	PeriodType    *ValueType
-	Period        int64
-
-	// The following fields are modified during encoding and copying,
-	// so are protected by a Mutex.
-	encodeMu sync.Mutex
-
-	commentX           []int64
-	docURLX            int64
-	dropFramesX        int64
-	keepFramesX        int64
-	stringTable        []string
-	defaultSampleTypeX int64
-}
-
-// ValueType corresponds to Profile.ValueType
-type ValueType struct {
-	Type string // cpu, wall, inuse_space, etc
-	Unit string // seconds, nanoseconds, bytes, etc
-
-	typeX int64
-	unitX int64
-}
-
-// Sample corresponds to Profile.Sample
-type Sample struct {
-	Location []*Location
-	Value    []int64
-	// Label is a per-label-key map to values for string labels.
-	//
-	// In general, having multiple values for the given label key is strongly
-	// discouraged - see docs for the sample label field in profile.proto.  The
-	// main reason this unlikely state is tracked here is to make the
-	// decoding->encoding roundtrip not lossy. But we expect that the value
-	// slices present in this map are always of length 1.
-	Label map[string][]string
-	// NumLabel is a per-label-key map to values for numeric labels. See a note
-	// above on handling multiple values for a label.
-	NumLabel map[string][]int64
-	// NumUnit is a per-label-key map to the unit names of corresponding numeric
-	// label values. The unit info may be missing even if the label is in
-	// NumLabel, see the docs in profile.proto for details. When the value is
-	// slice is present and not nil, its length must be equal to the length of
-	// the corresponding value slice in NumLabel.
-	NumUnit map[string][]string
-
-	locationIDX []uint64
-	labelX      []label
-}
-
-// label corresponds to Profile.Label
-type label struct {
-	keyX int64
-	// Exactly one of the two following values must be set
-	strX int64
-	numX int64 // Integer value for this label
-	// can be set if numX has value
-	unitX int64
-}
-
-// Mapping corresponds to Profile.Mapping
-type Mapping struct {
-	ID              uint64
-	Start           uint64
-	Limit           uint64
-	Offset          uint64
-	File            string
-	BuildID         string
-	HasFunctions    bool
-	HasFilenames    bool
-	HasLineNumbers  bool
-	HasInlineFrames bool
-
-	fileX    int64
-	buildIDX int64
-
-	// Name of the kernel relocation symbol ("_text" or "_stext"), extracted from File.
-	// For linux kernel mappings generated by some tools, correct symbolization depends
-	// on knowing which of the two possible relocation symbols was used for `Start`.
-	// This is given to us as a suffix in `File` (e.g. "[kernel.kallsyms]_stext").
-	//
-	// Note, this public field is not persisted in the proto. For the purposes of
-	// copying / merging / hashing profiles, it is considered subsumed by `File`.
-	KernelRelocationSymbol string
-}
-
-// Location corresponds to Profile.Location
-type Location struct {
-	ID       uint64
-	Mapping  *Mapping
-	Address  uint64
-	Line     []Line
-	IsFolded bool
-
-	mappingIDX uint64
-}
-
-// Line corresponds to Profile.Line
-type Line struct {
-	Function *Function
-	Line     int64
-	Column   int64
-
-	functionIDX uint64
-}
-
-// Function corresponds to Profile.Function
-type Function struct {
-	ID         uint64
-	Name       string
-	SystemName string
-	Filename   string
-	StartLine  int64
-
-	nameX       int64
-	systemNameX int64
-	filenameX   int64
-}
-
-// Parse parses a profile and checks for its validity. The input
-// may be a gzip-compressed encoded protobuf or one of many legacy
-// profile formats which may be unsupported in the future.
-func Parse(r io.Reader) (*Profile, error) {
-	data, err := io.ReadAll(r)
-	if err != nil {
-		return nil, err
-	}
-	return ParseData(data)
-}
-
-// ParseData parses a profile from a buffer and checks for its
-// validity.
-func ParseData(data []byte) (*Profile, error) {
-	var p *Profile
-	var err error
-	if len(data) >= 2 && data[0] == 0x1f && data[1] == 0x8b {
-		gz, err := gzip.NewReader(bytes.NewBuffer(data))
-		if err == nil {
-			data, err = io.ReadAll(gz)
-		}
-		if err != nil {
-			return nil, fmt.Errorf("decompressing profile: %v", err)
-		}
-	}
-	if p, err = ParseUncompressed(data); err != nil && err != errNoData && err != errConcatProfile {
-		p, err = parseLegacy(data)
-	}
-
-	if err != nil {
-		return nil, fmt.Errorf("parsing profile: %v", err)
-	}
-
-	if err := p.CheckValid(); err != nil {
-		return nil, fmt.Errorf("malformed profile: %v", err)
-	}
-	return p, nil
-}
-
-var errUnrecognized = fmt.Errorf("unrecognized profile format")
-var errMalformed = fmt.Errorf("malformed profile format")
-var errNoData = fmt.Errorf("empty input file")
-var errConcatProfile = fmt.Errorf("concatenated profiles detected")
-
-func parseLegacy(data []byte) (*Profile, error) {
-	parsers := []func([]byte) (*Profile, error){
-		parseCPU,
-		parseHeap,
-		parseGoCount, // goroutine, threadcreate
-		parseThread,
-		parseContention,
-		parseJavaProfile,
-	}
-
-	for _, parser := range parsers {
-		p, err := parser(data)
-		if err == nil {
-			p.addLegacyFrameInfo()
-			return p, nil
-		}
-		if err != errUnrecognized {
-			return nil, err
-		}
-	}
-	return nil, errUnrecognized
-}
-
-// ParseUncompressed parses an uncompressed protobuf into a profile.
-func ParseUncompressed(data []byte) (*Profile, error) {
-	if len(data) == 0 {
-		return nil, errNoData
-	}
-	p := &Profile{}
-	if err := unmarshal(data, p); err != nil {
-		return nil, err
-	}
-
-	if err := p.postDecode(); err != nil {
-		return nil, err
-	}
-
-	return p, nil
-}
-
-var libRx = regexp.MustCompile(`([.]so$|[.]so[._][0-9]+)`)
-
-// massageMappings applies heuristic-based changes to the profile
-// mappings to account for quirks of some environments.
-func (p *Profile) massageMappings() {
-	// Merge adjacent regions with matching names, checking that the offsets match
-	if len(p.Mapping) > 1 {
-		mappings := []*Mapping{p.Mapping[0]}
-		for _, m := range p.Mapping[1:] {
-			lm := mappings[len(mappings)-1]
-			if adjacent(lm, m) {
-				lm.Limit = m.Limit
-				if m.File != "" {
-					lm.File = m.File
-				}
-				if m.BuildID != "" {
-					lm.BuildID = m.BuildID
-				}
-				p.updateLocationMapping(m, lm)
-				continue
-			}
-			mappings = append(mappings, m)
-		}
-		p.Mapping = mappings
-	}
-
-	// Use heuristics to identify main binary and move it to the top of the list of mappings
-	for i, m := range p.Mapping {
-		file := strings.TrimSpace(strings.Replace(m.File, "(deleted)", "", -1))
-		if len(file) == 0 {
-			continue
-		}
-		if len(libRx.FindStringSubmatch(file)) > 0 {
-			continue
-		}
-		if file[0] == '[' {
-			continue
-		}
-		// Swap what we guess is main to position 0.
-		p.Mapping[0], p.Mapping[i] = p.Mapping[i], p.Mapping[0]
-		break
-	}
-
-	// Keep the mapping IDs neatly sorted
-	for i, m := range p.Mapping {
-		m.ID = uint64(i + 1)
-	}
-}
-
-// adjacent returns whether two mapping entries represent the same
-// mapping that has been split into two. Check that their addresses are adjacent,
-// and if the offsets match, if they are available.
-func adjacent(m1, m2 *Mapping) bool {
-	if m1.File != "" && m2.File != "" {
-		if m1.File != m2.File {
-			return false
-		}
-	}
-	if m1.BuildID != "" && m2.BuildID != "" {
-		if m1.BuildID != m2.BuildID {
-			return false
-		}
-	}
-	if m1.Limit != m2.Start {
-		return false
-	}
-	if m1.Offset != 0 && m2.Offset != 0 {
-		offset := m1.Offset + (m1.Limit - m1.Start)
-		if offset != m2.Offset {
-			return false
-		}
-	}
-	return true
-}
-
-func (p *Profile) updateLocationMapping(from, to *Mapping) {
-	for _, l := range p.Location {
-		if l.Mapping == from {
-			l.Mapping = to
-		}
-	}
-}
-
-func serialize(p *Profile) []byte {
-	p.encodeMu.Lock()
-	p.preEncode()
-	b := marshal(p)
-	p.encodeMu.Unlock()
-	return b
-}
-
-// Write writes the profile as a gzip-compressed marshaled protobuf.
-func (p *Profile) Write(w io.Writer) error {
-	zw := gzip.NewWriter(w)
-	defer zw.Close()
-	_, err := zw.Write(serialize(p))
-	return err
-}
-
-// WriteUncompressed writes the profile as a marshaled protobuf.
-func (p *Profile) WriteUncompressed(w io.Writer) error {
-	_, err := w.Write(serialize(p))
-	return err
-}
-
-// CheckValid tests whether the profile is valid. Checks include, but are
-// not limited to:
-//   - len(Profile.Sample[n].value) == len(Profile.value_unit)
-//   - Sample.id has a corresponding Profile.Location
-func (p *Profile) CheckValid() error {
-	// Check that sample values are consistent
-	sampleLen := len(p.SampleType)
-	if sampleLen == 0 && len(p.Sample) != 0 {
-		return fmt.Errorf("missing sample type information")
-	}
-	for _, s := range p.Sample {
-		if s == nil {
-			return fmt.Errorf("profile has nil sample")
-		}
-		if len(s.Value) != sampleLen {
-			return fmt.Errorf("mismatch: sample has %d values vs. %d types", len(s.Value), len(p.SampleType))
-		}
-		for _, l := range s.Location {
-			if l == nil {
-				return fmt.Errorf("sample has nil location")
-			}
-		}
-	}
-
-	// Check that all mappings/locations/functions are in the tables
-	// Check that there are no duplicate ids
-	mappings := make(map[uint64]*Mapping, len(p.Mapping))
-	for _, m := range p.Mapping {
-		if m == nil {
-			return fmt.Errorf("profile has nil mapping")
-		}
-		if m.ID == 0 {
-			return fmt.Errorf("found mapping with reserved ID=0")
-		}
-		if mappings[m.ID] != nil {
-			return fmt.Errorf("multiple mappings with same id: %d", m.ID)
-		}
-		mappings[m.ID] = m
-	}
-	functions := make(map[uint64]*Function, len(p.Function))
-	for _, f := range p.Function {
-		if f == nil {
-			return fmt.Errorf("profile has nil function")
-		}
-		if f.ID == 0 {
-			return fmt.Errorf("found function with reserved ID=0")
-		}
-		if functions[f.ID] != nil {
-			return fmt.Errorf("multiple functions with same id: %d", f.ID)
-		}
-		functions[f.ID] = f
-	}
-	locations := make(map[uint64]*Location, len(p.Location))
-	for _, l := range p.Location {
-		if l == nil {
-			return fmt.Errorf("profile has nil location")
-		}
-		if l.ID == 0 {
-			return fmt.Errorf("found location with reserved id=0")
-		}
-		if locations[l.ID] != nil {
-			return fmt.Errorf("multiple locations with same id: %d", l.ID)
-		}
-		locations[l.ID] = l
-		if m := l.Mapping; m != nil {
-			if m.ID == 0 || mappings[m.ID] != m {
-				return fmt.Errorf("inconsistent mapping %p: %d", m, m.ID)
-			}
-		}
-		for _, ln := range l.Line {
-			f := ln.Function
-			if f == nil {
-				return fmt.Errorf("location id: %d has a line with nil function", l.ID)
-			}
-			if f.ID == 0 || functions[f.ID] != f {
-				return fmt.Errorf("inconsistent function %p: %d", f, f.ID)
-			}
-		}
-	}
-	return nil
-}
-
-// Aggregate merges the locations in the profile into equivalence
-// classes preserving the request attributes. It also updates the
-// samples to point to the merged locations.
-func (p *Profile) Aggregate(inlineFrame, function, filename, linenumber, columnnumber, address bool) error {
-	for _, m := range p.Mapping {
-		m.HasInlineFrames = m.HasInlineFrames && inlineFrame
-		m.HasFunctions = m.HasFunctions && function
-		m.HasFilenames = m.HasFilenames && filename
-		m.HasLineNumbers = m.HasLineNumbers && linenumber
-	}
-
-	// Aggregate functions
-	if !function || !filename {
-		for _, f := range p.Function {
-			if !function {
-				f.Name = ""
-				f.SystemName = ""
-			}
-			if !filename {
-				f.Filename = ""
-			}
-		}
-	}
-
-	// Aggregate locations
-	if !inlineFrame || !address || !linenumber || !columnnumber {
-		for _, l := range p.Location {
-			if !inlineFrame && len(l.Line) > 1 {
-				l.Line = l.Line[len(l.Line)-1:]
-			}
-			if !linenumber {
-				for i := range l.Line {
-					l.Line[i].Line = 0
-					l.Line[i].Column = 0
-				}
-			}
-			if !columnnumber {
-				for i := range l.Line {
-					l.Line[i].Column = 0
-				}
-			}
-			if !address {
-				l.Address = 0
-			}
-		}
-	}
-
-	return p.CheckValid()
-}
-
-// NumLabelUnits returns a map of numeric label keys to the units
-// associated with those keys and a map of those keys to any units
-// that were encountered but not used.
-// Unit for a given key is the first encountered unit for that key. If multiple
-// units are encountered for values paired with a particular key, then the first
-// unit encountered is used and all other units are returned in sorted order
-// in map of ignored units.
-// If no units are encountered for a particular key, the unit is then inferred
-// based on the key.
-func (p *Profile) NumLabelUnits() (map[string]string, map[string][]string) {
-	numLabelUnits := map[string]string{}
-	ignoredUnits := map[string]map[string]bool{}
-	encounteredKeys := map[string]bool{}
-
-	// Determine units based on numeric tags for each sample.
-	for _, s := range p.Sample {
-		for k := range s.NumLabel {
-			encounteredKeys[k] = true
-			for _, unit := range s.NumUnit[k] {
-				if unit == "" {
-					continue
-				}
-				if wantUnit, ok := numLabelUnits[k]; !ok {
-					numLabelUnits[k] = unit
-				} else if wantUnit != unit {
-					if v, ok := ignoredUnits[k]; ok {
-						v[unit] = true
-					} else {
-						ignoredUnits[k] = map[string]bool{unit: true}
-					}
-				}
-			}
-		}
-	}
-	// Infer units for keys without any units associated with
-	// numeric tag values.
-	for key := range encounteredKeys {
-		unit := numLabelUnits[key]
-		if unit == "" {
-			switch key {
-			case "alignment", "request":
-				numLabelUnits[key] = "bytes"
-			default:
-				numLabelUnits[key] = key
-			}
-		}
-	}
-
-	// Copy ignored units into more readable format
-	unitsIgnored := make(map[string][]string, len(ignoredUnits))
-	for key, values := range ignoredUnits {
-		units := make([]string, len(values))
-		i := 0
-		for unit := range values {
-			units[i] = unit
-			i++
-		}
-		sort.Strings(units)
-		unitsIgnored[key] = units
-	}
-
-	return numLabelUnits, unitsIgnored
-}
-
-// String dumps a text representation of a profile. Intended mainly
-// for debugging purposes.
-func (p *Profile) String() string {
-	ss := make([]string, 0, len(p.Comments)+len(p.Sample)+len(p.Mapping)+len(p.Location))
-	for _, c := range p.Comments {
-		ss = append(ss, "Comment: "+c)
-	}
-	if url := p.DocURL; url != "" {
-		ss = append(ss, fmt.Sprintf("Doc: %s", url))
-	}
-	if pt := p.PeriodType; pt != nil {
-		ss = append(ss, fmt.Sprintf("PeriodType: %s %s", pt.Type, pt.Unit))
-	}
-	ss = append(ss, fmt.Sprintf("Period: %d", p.Period))
-	if p.TimeNanos != 0 {
-		ss = append(ss, fmt.Sprintf("Time: %v", time.Unix(0, p.TimeNanos)))
-	}
-	if p.DurationNanos != 0 {
-		ss = append(ss, fmt.Sprintf("Duration: %.4v", time.Duration(p.DurationNanos)))
-	}
-
-	ss = append(ss, "Samples:")
-	var sh1 string
-	for _, s := range p.SampleType {
-		dflt := ""
-		if s.Type == p.DefaultSampleType {
-			dflt = "[dflt]"
-		}
-		sh1 = sh1 + fmt.Sprintf("%s/%s%s ", s.Type, s.Unit, dflt)
-	}
-	ss = append(ss, strings.TrimSpace(sh1))
-	for _, s := range p.Sample {
-		ss = append(ss, s.string())
-	}
-
-	ss = append(ss, "Locations")
-	for _, l := range p.Location {
-		ss = append(ss, l.string())
-	}
-
-	ss = append(ss, "Mappings")
-	for _, m := range p.Mapping {
-		ss = append(ss, m.string())
-	}
-
-	return strings.Join(ss, "\n") + "\n"
-}
-
-// string dumps a text representation of a mapping. Intended mainly
-// for debugging purposes.
-func (m *Mapping) string() string {
-	bits := ""
-	if m.HasFunctions {
-		bits = bits + "[FN]"
-	}
-	if m.HasFilenames {
-		bits = bits + "[FL]"
-	}
-	if m.HasLineNumbers {
-		bits = bits + "[LN]"
-	}
-	if m.HasInlineFrames {
-		bits = bits + "[IN]"
-	}
-	return fmt.Sprintf("%d: %#x/%#x/%#x %s %s %s",
-		m.ID,
-		m.Start, m.Limit, m.Offset,
-		m.File,
-		m.BuildID,
-		bits)
-}
-
-// string dumps a text representation of a location. Intended mainly
-// for debugging purposes.
-func (l *Location) string() string {
-	ss := []string{}
-	locStr := fmt.Sprintf("%6d: %#x ", l.ID, l.Address)
-	if m := l.Mapping; m != nil {
-		locStr = locStr + fmt.Sprintf("M=%d ", m.ID)
-	}
-	if l.IsFolded {
-		locStr = locStr + "[F] "
-	}
-	if len(l.Line) == 0 {
-		ss = append(ss, locStr)
-	}
-	for li := range l.Line {
-		lnStr := "??"
-		if fn := l.Line[li].Function; fn != nil {
-			lnStr = fmt.Sprintf("%s %s:%d:%d s=%d",
-				fn.Name,
-				fn.Filename,
-				l.Line[li].Line,
-				l.Line[li].Column,
-				fn.StartLine)
-			if fn.Name != fn.SystemName {
-				lnStr = lnStr + "(" + fn.SystemName + ")"
-			}
-		}
-		ss = append(ss, locStr+lnStr)
-		// Do not print location details past the first line
-		locStr = "             "
-	}
-	return strings.Join(ss, "\n")
-}
-
-// string dumps a text representation of a sample. Intended mainly
-// for debugging purposes.
-func (s *Sample) string() string {
-	ss := []string{}
-	var sv string
-	for _, v := range s.Value {
-		sv = fmt.Sprintf("%s %10d", sv, v)
-	}
-	sv = sv + ": "
-	for _, l := range s.Location {
-		sv = sv + fmt.Sprintf("%d ", l.ID)
-	}
-	ss = append(ss, sv)
-	const labelHeader = "                "
-	if len(s.Label) > 0 {
-		ss = append(ss, labelHeader+labelsToString(s.Label))
-	}
-	if len(s.NumLabel) > 0 {
-		ss = append(ss, labelHeader+numLabelsToString(s.NumLabel, s.NumUnit))
-	}
-	return strings.Join(ss, "\n")
-}
-
-// labelsToString returns a string representation of a
-// map representing labels.
-func labelsToString(labels map[string][]string) string {
-	ls := []string{}
-	for k, v := range labels {
-		ls = append(ls, fmt.Sprintf("%s:%v", k, v))
-	}
-	sort.Strings(ls)
-	return strings.Join(ls, " ")
-}
-
-// numLabelsToString returns a string representation of a map
-// representing numeric labels.
-func numLabelsToString(numLabels map[string][]int64, numUnits map[string][]string) string {
-	ls := []string{}
-	for k, v := range numLabels {
-		units := numUnits[k]
-		var labelString string
-		if len(units) == len(v) {
-			values := make([]string, len(v))
-			for i, vv := range v {
-				values[i] = fmt.Sprintf("%d %s", vv, units[i])
-			}
-			labelString = fmt.Sprintf("%s:%v", k, values)
-		} else {
-			labelString = fmt.Sprintf("%s:%v", k, v)
-		}
-		ls = append(ls, labelString)
-	}
-	sort.Strings(ls)
-	return strings.Join(ls, " ")
-}
-
-// SetLabel sets the specified key to the specified value for all samples in the
-// profile.
-func (p *Profile) SetLabel(key string, value []string) {
-	for _, sample := range p.Sample {
-		if sample.Label == nil {
-			sample.Label = map[string][]string{key: value}
-		} else {
-			sample.Label[key] = value
-		}
-	}
-}
-
-// RemoveLabel removes all labels associated with the specified key for all
-// samples in the profile.
-func (p *Profile) RemoveLabel(key string) {
-	for _, sample := range p.Sample {
-		delete(sample.Label, key)
-	}
-}
-
-// HasLabel returns true if a sample has a label with indicated key and value.
-func (s *Sample) HasLabel(key, value string) bool {
-	for _, v := range s.Label[key] {
-		if v == value {
-			return true
-		}
-	}
-	return false
-}
-
-// SetNumLabel sets the specified key to the specified value for all samples in the
-// profile. "unit" is a slice that describes the units that each corresponding member
-// of "values" is measured in (e.g. bytes or seconds).  If there is no relevant
-// unit for a given value, that member of "unit" should be the empty string.
-// "unit" must either have the same length as "value", or be nil.
-func (p *Profile) SetNumLabel(key string, value []int64, unit []string) {
-	for _, sample := range p.Sample {
-		if sample.NumLabel == nil {
-			sample.NumLabel = map[string][]int64{key: value}
-		} else {
-			sample.NumLabel[key] = value
-		}
-		if sample.NumUnit == nil {
-			sample.NumUnit = map[string][]string{key: unit}
-		} else {
-			sample.NumUnit[key] = unit
-		}
-	}
-}
-
-// RemoveNumLabel removes all numerical labels associated with the specified key for all
-// samples in the profile.
-func (p *Profile) RemoveNumLabel(key string) {
-	for _, sample := range p.Sample {
-		delete(sample.NumLabel, key)
-		delete(sample.NumUnit, key)
-	}
-}
-
-// DiffBaseSample returns true if a sample belongs to the diff base and false
-// otherwise.
-func (s *Sample) DiffBaseSample() bool {
-	return s.HasLabel("pprof::base", "true")
-}
-
-// Scale multiplies all sample values in a profile by a constant and keeps
-// only samples that have at least one non-zero value.
-func (p *Profile) Scale(ratio float64) {
-	if ratio == 1 {
-		return
-	}
-	ratios := make([]float64, len(p.SampleType))
-	for i := range p.SampleType {
-		ratios[i] = ratio
-	}
-	p.ScaleN(ratios)
-}
-
-// ScaleN multiplies each sample values in a sample by a different amount
-// and keeps only samples that have at least one non-zero value.
-func (p *Profile) ScaleN(ratios []float64) error {
-	if len(p.SampleType) != len(ratios) {
-		return fmt.Errorf("mismatched scale ratios, got %d, want %d", len(ratios), len(p.SampleType))
-	}
-	allOnes := true
-	for _, r := range ratios {
-		if r != 1 {
-			allOnes = false
-			break
-		}
-	}
-	if allOnes {
-		return nil
-	}
-	fillIdx := 0
-	for _, s := range p.Sample {
-		keepSample := false
-		for i, v := range s.Value {
-			if ratios[i] != 1 {
-				val := int64(math.Round(float64(v) * ratios[i]))
-				s.Value[i] = val
-				keepSample = keepSample || val != 0
-			}
-		}
-		if keepSample {
-			p.Sample[fillIdx] = s
-			fillIdx++
-		}
-	}
-	p.Sample = p.Sample[:fillIdx]
-	return nil
-}
-
-// HasFunctions determines if all locations in this profile have
-// symbolized function information.
-func (p *Profile) HasFunctions() bool {
-	for _, l := range p.Location {
-		if l.Mapping != nil && !l.Mapping.HasFunctions {
-			return false
-		}
-	}
-	return true
-}
-
-// HasFileLines determines if all locations in this profile have
-// symbolized file and line number information.
-func (p *Profile) HasFileLines() bool {
-	for _, l := range p.Location {
-		if l.Mapping != nil && (!l.Mapping.HasFilenames || !l.Mapping.HasLineNumbers) {
-			return false
-		}
-	}
-	return true
-}
-
-// Unsymbolizable returns true if a mapping points to a binary for which
-// locations can't be symbolized in principle, at least now. Examples are
-// "[vdso]", "[vsyscall]" and some others, see the code.
-func (m *Mapping) Unsymbolizable() bool {
-	name := filepath.Base(m.File)
-	return strings.HasPrefix(name, "[") || strings.HasPrefix(name, "linux-vdso") || strings.HasPrefix(m.File, "/dev/dri/") || m.File == "//anon"
-}
-
-// Copy makes a fully independent copy of a profile.
-func (p *Profile) Copy() *Profile {
-	pp := &Profile{}
-	if err := unmarshal(serialize(p), pp); err != nil {
-		panic(err)
-	}
-	if err := pp.postDecode(); err != nil {
-		panic(err)
-	}
-
-	return pp
-}
diff --git a/vendor/github.com/google/pprof/profile/proto.go b/vendor/github.com/google/pprof/profile/proto.go
deleted file mode 100644
index a15696ba1..000000000
--- a/vendor/github.com/google/pprof/profile/proto.go
+++ /dev/null
@@ -1,367 +0,0 @@
-// 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.
-
-// This file is a simple protocol buffer encoder and decoder.
-// The format is described at
-// https://developers.google.com/protocol-buffers/docs/encoding
-//
-// A protocol message must implement the message interface:
-//   decoder() []decoder
-//   encode(*buffer)
-//
-// The decode method returns a slice indexed by field number that gives the
-// function to decode that field.
-// The encode method encodes its receiver into the given buffer.
-//
-// The two methods are simple enough to be implemented by hand rather than
-// by using a protocol compiler.
-//
-// See profile.go for examples of messages implementing this interface.
-//
-// There is no support for groups, message sets, or "has" bits.
-
-package profile
-
-import (
-	"errors"
-	"fmt"
-)
-
-type buffer struct {
-	field    int // field tag
-	typ      int // proto wire type code for field
-	u64      uint64
-	data     []byte
-	tmp      [16]byte
-	tmpLines []Line // temporary storage used while decoding "repeated Line".
-}
-
-type decoder func(*buffer, message) error
-
-type message interface {
-	decoder() []decoder
-	encode(*buffer)
-}
-
-func marshal(m message) []byte {
-	var b buffer
-	m.encode(&b)
-	return b.data
-}
-
-func encodeVarint(b *buffer, x uint64) {
-	for x >= 128 {
-		b.data = append(b.data, byte(x)|0x80)
-		x >>= 7
-	}
-	b.data = append(b.data, byte(x))
-}
-
-func encodeLength(b *buffer, tag int, len int) {
-	encodeVarint(b, uint64(tag)<<3|2)
-	encodeVarint(b, uint64(len))
-}
-
-func encodeUint64(b *buffer, tag int, x uint64) {
-	// append varint to b.data
-	encodeVarint(b, uint64(tag)<<3)
-	encodeVarint(b, x)
-}
-
-func encodeUint64s(b *buffer, tag int, x []uint64) {
-	if len(x) > 2 {
-		// Use packed encoding
-		n1 := len(b.data)
-		for _, u := range x {
-			encodeVarint(b, u)
-		}
-		n2 := len(b.data)
-		encodeLength(b, tag, n2-n1)
-		n3 := len(b.data)
-		copy(b.tmp[:], b.data[n2:n3])
-		copy(b.data[n1+(n3-n2):], b.data[n1:n2])
-		copy(b.data[n1:], b.tmp[:n3-n2])
-		return
-	}
-	for _, u := range x {
-		encodeUint64(b, tag, u)
-	}
-}
-
-func encodeUint64Opt(b *buffer, tag int, x uint64) {
-	if x == 0 {
-		return
-	}
-	encodeUint64(b, tag, x)
-}
-
-func encodeInt64(b *buffer, tag int, x int64) {
-	u := uint64(x)
-	encodeUint64(b, tag, u)
-}
-
-func encodeInt64s(b *buffer, tag int, x []int64) {
-	if len(x) > 2 {
-		// Use packed encoding
-		n1 := len(b.data)
-		for _, u := range x {
-			encodeVarint(b, uint64(u))
-		}
-		n2 := len(b.data)
-		encodeLength(b, tag, n2-n1)
-		n3 := len(b.data)
-		copy(b.tmp[:], b.data[n2:n3])
-		copy(b.data[n1+(n3-n2):], b.data[n1:n2])
-		copy(b.data[n1:], b.tmp[:n3-n2])
-		return
-	}
-	for _, u := range x {
-		encodeInt64(b, tag, u)
-	}
-}
-
-func encodeInt64Opt(b *buffer, tag int, x int64) {
-	if x == 0 {
-		return
-	}
-	encodeInt64(b, tag, x)
-}
-
-func encodeString(b *buffer, tag int, x string) {
-	encodeLength(b, tag, len(x))
-	b.data = append(b.data, x...)
-}
-
-func encodeStrings(b *buffer, tag int, x []string) {
-	for _, s := range x {
-		encodeString(b, tag, s)
-	}
-}
-
-func encodeBool(b *buffer, tag int, x bool) {
-	if x {
-		encodeUint64(b, tag, 1)
-	} else {
-		encodeUint64(b, tag, 0)
-	}
-}
-
-func encodeBoolOpt(b *buffer, tag int, x bool) {
-	if x {
-		encodeBool(b, tag, x)
-	}
-}
-
-func encodeMessage(b *buffer, tag int, m message) {
-	n1 := len(b.data)
-	m.encode(b)
-	n2 := len(b.data)
-	encodeLength(b, tag, n2-n1)
-	n3 := len(b.data)
-	copy(b.tmp[:], b.data[n2:n3])
-	copy(b.data[n1+(n3-n2):], b.data[n1:n2])
-	copy(b.data[n1:], b.tmp[:n3-n2])
-}
-
-func unmarshal(data []byte, m message) (err error) {
-	b := buffer{data: data, typ: 2}
-	return decodeMessage(&b, m)
-}
-
-func le64(p []byte) uint64 {
-	return uint64(p[0]) | uint64(p[1])<<8 | uint64(p[2])<<16 | uint64(p[3])<<24 | uint64(p[4])<<32 | uint64(p[5])<<40 | uint64(p[6])<<48 | uint64(p[7])<<56
-}
-
-func le32(p []byte) uint32 {
-	return uint32(p[0]) | uint32(p[1])<<8 | uint32(p[2])<<16 | uint32(p[3])<<24
-}
-
-func decodeVarint(data []byte) (uint64, []byte, error) {
-	var u uint64
-	for i := 0; ; i++ {
-		if i >= 10 || i >= len(data) {
-			return 0, nil, errors.New("bad varint")
-		}
-		u |= uint64(data[i]&0x7F) << uint(7*i)
-		if data[i]&0x80 == 0 {
-			return u, data[i+1:], nil
-		}
-	}
-}
-
-func decodeField(b *buffer, data []byte) ([]byte, error) {
-	x, data, err := decodeVarint(data)
-	if err != nil {
-		return nil, err
-	}
-	b.field = int(x >> 3)
-	b.typ = int(x & 7)
-	b.data = nil
-	b.u64 = 0
-	switch b.typ {
-	case 0:
-		b.u64, data, err = decodeVarint(data)
-		if err != nil {
-			return nil, err
-		}
-	case 1:
-		if len(data) < 8 {
-			return nil, errors.New("not enough data")
-		}
-		b.u64 = le64(data[:8])
-		data = data[8:]
-	case 2:
-		var n uint64
-		n, data, err = decodeVarint(data)
-		if err != nil {
-			return nil, err
-		}
-		if n > uint64(len(data)) {
-			return nil, errors.New("too much data")
-		}
-		b.data = data[:n]
-		data = data[n:]
-	case 5:
-		if len(data) < 4 {
-			return nil, errors.New("not enough data")
-		}
-		b.u64 = uint64(le32(data[:4]))
-		data = data[4:]
-	default:
-		return nil, fmt.Errorf("unknown wire type: %d", b.typ)
-	}
-
-	return data, nil
-}
-
-func checkType(b *buffer, typ int) error {
-	if b.typ != typ {
-		return errors.New("type mismatch")
-	}
-	return nil
-}
-
-func decodeMessage(b *buffer, m message) error {
-	if err := checkType(b, 2); err != nil {
-		return err
-	}
-	dec := m.decoder()
-	data := b.data
-	for len(data) > 0 {
-		// pull varint field# + type
-		var err error
-		data, err = decodeField(b, data)
-		if err != nil {
-			return err
-		}
-		if b.field >= len(dec) || dec[b.field] == nil {
-			continue
-		}
-		if err := dec[b.field](b, m); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func decodeInt64(b *buffer, x *int64) error {
-	if err := checkType(b, 0); err != nil {
-		return err
-	}
-	*x = int64(b.u64)
-	return nil
-}
-
-func decodeInt64s(b *buffer, x *[]int64) error {
-	if b.typ == 2 {
-		// Packed encoding
-		data := b.data
-		for len(data) > 0 {
-			var u uint64
-			var err error
-
-			if u, data, err = decodeVarint(data); err != nil {
-				return err
-			}
-			*x = append(*x, int64(u))
-		}
-		return nil
-	}
-	var i int64
-	if err := decodeInt64(b, &i); err != nil {
-		return err
-	}
-	*x = append(*x, i)
-	return nil
-}
-
-func decodeUint64(b *buffer, x *uint64) error {
-	if err := checkType(b, 0); err != nil {
-		return err
-	}
-	*x = b.u64
-	return nil
-}
-
-func decodeUint64s(b *buffer, x *[]uint64) error {
-	if b.typ == 2 {
-		data := b.data
-		// Packed encoding
-		for len(data) > 0 {
-			var u uint64
-			var err error
-
-			if u, data, err = decodeVarint(data); err != nil {
-				return err
-			}
-			*x = append(*x, u)
-		}
-		return nil
-	}
-	var u uint64
-	if err := decodeUint64(b, &u); err != nil {
-		return err
-	}
-	*x = append(*x, u)
-	return nil
-}
-
-func decodeString(b *buffer, x *string) error {
-	if err := checkType(b, 2); err != nil {
-		return err
-	}
-	*x = string(b.data)
-	return nil
-}
-
-func decodeStrings(b *buffer, x *[]string) error {
-	var s string
-	if err := decodeString(b, &s); err != nil {
-		return err
-	}
-	*x = append(*x, s)
-	return nil
-}
-
-func decodeBool(b *buffer, x *bool) error {
-	if err := checkType(b, 0); err != nil {
-		return err
-	}
-	if int64(b.u64) == 0 {
-		*x = false
-	} else {
-		*x = true
-	}
-	return nil
-}
diff --git a/vendor/github.com/google/pprof/profile/prune.go b/vendor/github.com/google/pprof/profile/prune.go
deleted file mode 100644
index b2f9fd546..000000000
--- a/vendor/github.com/google/pprof/profile/prune.go
+++ /dev/null
@@ -1,194 +0,0 @@
-// 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.
-
-// Implements methods to remove frames from profiles.
-
-package profile
-
-import (
-	"fmt"
-	"regexp"
-	"strings"
-)
-
-var (
-	reservedNames = []string{"(anonymous namespace)", "operator()"}
-	bracketRx     = func() *regexp.Regexp {
-		var quotedNames []string
-		for _, name := range append(reservedNames, "(") {
-			quotedNames = append(quotedNames, regexp.QuoteMeta(name))
-		}
-		return regexp.MustCompile(strings.Join(quotedNames, "|"))
-	}()
-)
-
-// simplifyFunc does some primitive simplification of function names.
-func simplifyFunc(f string) string {
-	// Account for leading '.' on the PPC ELF v1 ABI.
-	funcName := strings.TrimPrefix(f, ".")
-	// Account for unsimplified names -- try  to remove the argument list by trimming
-	// starting from the first '(', but skipping reserved names that have '('.
-	for _, ind := range bracketRx.FindAllStringSubmatchIndex(funcName, -1) {
-		foundReserved := false
-		for _, res := range reservedNames {
-			if funcName[ind[0]:ind[1]] == res {
-				foundReserved = true
-				break
-			}
-		}
-		if !foundReserved {
-			funcName = funcName[:ind[0]]
-			break
-		}
-	}
-	return funcName
-}
-
-// Prune removes all nodes beneath a node matching dropRx, and not
-// matching keepRx. If the root node of a Sample matches, the sample
-// will have an empty stack.
-func (p *Profile) Prune(dropRx, keepRx *regexp.Regexp) {
-	prune := make(map[uint64]bool)
-	pruneBeneath := make(map[uint64]bool)
-
-	// simplifyFunc can be expensive, so cache results.
-	// Note that the same function name can be encountered many times due
-	// different lines and addresses in the same function.
-	pruneCache := map[string]bool{} // Map from function to whether or not to prune
-	pruneFromHere := func(s string) bool {
-		if r, ok := pruneCache[s]; ok {
-			return r
-		}
-		funcName := simplifyFunc(s)
-		if dropRx.MatchString(funcName) {
-			if keepRx == nil || !keepRx.MatchString(funcName) {
-				pruneCache[s] = true
-				return true
-			}
-		}
-		pruneCache[s] = false
-		return false
-	}
-
-	for _, loc := range p.Location {
-		var i int
-		for i = len(loc.Line) - 1; i >= 0; i-- {
-			if fn := loc.Line[i].Function; fn != nil && fn.Name != "" {
-				if pruneFromHere(fn.Name) {
-					break
-				}
-			}
-		}
-
-		if i >= 0 {
-			// Found matching entry to prune.
-			pruneBeneath[loc.ID] = true
-
-			// Remove the matching location.
-			if i == len(loc.Line)-1 {
-				// Matched the top entry: prune the whole location.
-				prune[loc.ID] = true
-			} else {
-				loc.Line = loc.Line[i+1:]
-			}
-		}
-	}
-
-	// Prune locs from each Sample
-	for _, sample := range p.Sample {
-		// Scan from the root to the leaves to find the prune location.
-		// Do not prune frames before the first user frame, to avoid
-		// pruning everything.
-		foundUser := false
-		for i := len(sample.Location) - 1; i >= 0; i-- {
-			id := sample.Location[i].ID
-			if !prune[id] && !pruneBeneath[id] {
-				foundUser = true
-				continue
-			}
-			if !foundUser {
-				continue
-			}
-			if prune[id] {
-				sample.Location = sample.Location[i+1:]
-				break
-			}
-			if pruneBeneath[id] {
-				sample.Location = sample.Location[i:]
-				break
-			}
-		}
-	}
-}
-
-// RemoveUninteresting prunes and elides profiles using built-in
-// tables of uninteresting function names.
-func (p *Profile) RemoveUninteresting() error {
-	var keep, drop *regexp.Regexp
-	var err error
-
-	if p.DropFrames != "" {
-		if drop, err = regexp.Compile("^(" + p.DropFrames + ")$"); err != nil {
-			return fmt.Errorf("failed to compile regexp %s: %v", p.DropFrames, err)
-		}
-		if p.KeepFrames != "" {
-			if keep, err = regexp.Compile("^(" + p.KeepFrames + ")$"); err != nil {
-				return fmt.Errorf("failed to compile regexp %s: %v", p.KeepFrames, err)
-			}
-		}
-		p.Prune(drop, keep)
-	}
-	return nil
-}
-
-// PruneFrom removes all nodes beneath the lowest node matching dropRx, not including itself.
-//
-// Please see the example below to understand this method as well as
-// the difference from Prune method.
-//
-// A sample contains Location of [A,B,C,B,D] where D is the top frame and there's no inline.
-//
-// PruneFrom(A) returns [A,B,C,B,D] because there's no node beneath A.
-// Prune(A, nil) returns [B,C,B,D] by removing A itself.
-//
-// PruneFrom(B) returns [B,C,B,D] by removing all nodes beneath the first B when scanning from the bottom.
-// Prune(B, nil) returns [D] because a matching node is found by scanning from the root.
-func (p *Profile) PruneFrom(dropRx *regexp.Regexp) {
-	pruneBeneath := make(map[uint64]bool)
-
-	for _, loc := range p.Location {
-		for i := 0; i < len(loc.Line); i++ {
-			if fn := loc.Line[i].Function; fn != nil && fn.Name != "" {
-				funcName := simplifyFunc(fn.Name)
-				if dropRx.MatchString(funcName) {
-					// Found matching entry to prune.
-					pruneBeneath[loc.ID] = true
-					loc.Line = loc.Line[i:]
-					break
-				}
-			}
-		}
-	}
-
-	// Prune locs from each Sample
-	for _, sample := range p.Sample {
-		// Scan from the bottom leaf to the root to find the prune location.
-		for i, loc := range sample.Location {
-			if pruneBeneath[loc.ID] {
-				sample.Location = sample.Location[i:]
-				break
-			}
-		}
-	}
-}