cmd/pprof: update vendored github.com/google/pprof

Pull in the latest published version of github.com/google/pprof
as part of the continuous process of keeping Go's dependencies
up to date.

For #36905.

[git-generate]
cd src/cmd
go get github.com/google/pprof@v0.0.0-20250630185457-6e76a2b096b5
go mod tidy
go mod vendor

Change-Id: Icfa35291f629fcffae67238704e59e17ee05e0b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/696015
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

18 files changed, 58 insertions, 80 deletions

diff --git a/src/cmd/vendor/github.com/google/pprof/driver/driver.go b/src/cmd/vendor/github.com/google/pprof/driver/driver.go
index 989aac32ff..657a673521 100644
--- a/src/cmd/vendor/github.com/google/pprof/driver/driver.go
+++ b/src/cmd/vendor/github.com/google/pprof/driver/driver.go
@@ -17,6 +17,7 @@ package driver
 
 import (
 	"io"
+	"maps"
 	"net/http"
 	"regexp"
 	"time"
@@ -293,8 +294,6 @@ type internalSymbolizer struct {
 
 func (s *internalSymbolizer) Symbolize(mode string, srcs plugin.MappingSources, prof *profile.Profile) error {
 	isrcs := MappingSources{}
-	for m, s := range srcs {
-		isrcs[m] = s
-	}
+	maps.Copy(isrcs, srcs)
 	return s.Symbolizer.Symbolize(mode, isrcs, prof)
 }
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/driver/config.go b/src/cmd/vendor/github.com/google/pprof/internal/driver/config.go
index 090230e2a7..184de397ef 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/driver/config.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/driver/config.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/url"
 	"reflect"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -226,11 +227,9 @@ func (cfg *config) set(f configField, value string) error {
 	case *string:
 		if len(f.choices) > 0 {
 			// Verify that value is one of the allowed choices.
-			for _, choice := range f.choices {
-				if choice == value {
-					*ptr = value
-					return nil
-				}
+			if slices.Contains(f.choices, value) {
+				*ptr = value
+				return nil
 			}
 			return fmt.Errorf("invalid %q value %q", f.name, value)
 		}
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/driver/driver_focus.go b/src/cmd/vendor/github.com/google/pprof/internal/driver/driver_focus.go
index fd05adb146..fb9c35c601 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/driver/driver_focus.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/driver/driver_focus.go
@@ -17,6 +17,7 @@ package driver
 import (
 	"fmt"
 	"regexp"
+	"slices"
 	"strconv"
 	"strings"
 
@@ -148,10 +149,8 @@ func compileTagFilter(name, value string, numLabelUnits map[string]string, ui pl
 	return func(s *profile.Sample) bool {
 		if vals, ok := s.Label[wantKey]; ok {
 			for _, rx := range rfx {
-				for _, val := range vals {
-					if rx.MatchString(val) {
-						return true
-					}
+				if slices.ContainsFunc(vals, rx.MatchString) {
+					return true
 				}
 			}
 		}
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/driver/fetch.go b/src/cmd/vendor/github.com/google/pprof/internal/driver/fetch.go
index a94ddf6adb..969c1dac11 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/driver/fetch.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/driver/fetch.go
@@ -174,10 +174,7 @@ func chunkedGrab(sources []profileSource, fetch plugin.Fetcher, obj plugin.ObjTo
 	var count int
 
 	for start := 0; start < len(sources); start += chunkSize {
-		end := start + chunkSize
-		if end > len(sources) {
-			end = len(sources)
-		}
+		end := min(start+chunkSize, len(sources))
 		chunkP, chunkMsrc, chunkSave, chunkCount, chunkErr := concurrentGrab(sources[start:end], fetch, obj, ui, tr)
 		switch {
 		case chunkErr != nil:
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/driver/html/common.css b/src/cmd/vendor/github.com/google/pprof/internal/driver/html/common.css
index 0a897ce291..8c7693d0a7 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/driver/html/common.css
+++ b/src/cmd/vendor/github.com/google/pprof/internal/driver/html/common.css
@@ -218,10 +218,12 @@ a {
 }
 #graph {
   overflow: hidden;
+  width: 100%;
+  height: 100%;
 }
 #graph svg {
   width: 100%;
-  height: auto;
+  height: 100%;
   padding: 10px;
 }
 #content.source .filename {
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/driver/html/stacks.js b/src/cmd/vendor/github.com/google/pprof/internal/driver/html/stacks.js
index 7db06996da..8ba2f35c37 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/driver/html/stacks.js
+++ b/src/cmd/vendor/github.com/google/pprof/internal/driver/html/stacks.js
@@ -579,7 +579,7 @@ function stackViewer(stacks, nodes) {
   }
 
   // percentText returns text that displays v in appropriate units alongside its
-  // percentange.
+  // percentage.
   function percentText(v) {
     function percent(v, total) {
       return Number(((100.0 * v) / total).toFixed(1)) + '%';
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/driver/webui.go b/src/cmd/vendor/github.com/google/pprof/internal/driver/webui.go
index dd628f7c2d..ac7465c93e 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/driver/webui.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/driver/webui.go
@@ -19,11 +19,13 @@ import (
 	"fmt"
 	"html/template"
 	"io"
+	"maps"
 	"net"
 	"net/http"
 	gourl "net/url"
 	"os"
 	"os/exec"
+	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -107,9 +109,7 @@ func serveWebInterface(hostport string, p *profile.Profile, o *plugin.Options, d
 	for n, c := range pprofCommands {
 		ui.help[n] = c.description
 	}
-	for n, help := range configHelp {
-		ui.help[n] = help
-	}
+	maps.Copy(ui.help, configHelp)
 	ui.help["details"] = "Show information about the profile and this view"
 	ui.help["graph"] = "Display profile as a directed graph"
 	ui.help["flamegraph"] = "Display profile as a flame graph"
@@ -227,12 +227,7 @@ func redirectWithQuery(path string, code int) http.HandlerFunc {
 }
 
 func isLocalhost(host string) bool {
-	for _, v := range []string{"localhost", "127.0.0.1", "[::1]", "::1"} {
-		if host == v {
-			return true
-		}
-	}
-	return false
+	return slices.Contains([]string{"localhost", "127.0.0.1", "[::1]", "::1"}, host)
 }
 
 func openBrowser(url string, o *plugin.Options) {
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/elfexec/elfexec.go b/src/cmd/vendor/github.com/google/pprof/internal/elfexec/elfexec.go
index 3f5b09b5e7..37884033d3 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/elfexec/elfexec.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/elfexec/elfexec.go
@@ -230,7 +230,7 @@ func GetBase(fh *elf.FileHeader, loadSegment *elf.ProgHeader, stextOffset *uint6
 		}
 		if stextOffset == nil && start > 0 && start < 0x8000000000000000 {
 			// A regular user-mode executable. Compute the base offset using same
-			// arithmetics as in ET_DYN case below, see the explanation there.
+			// arithmetic as in ET_DYN case below, see the explanation there.
 			// Ideally, the condition would just be "stextOffset == nil" as that
 			// represents the address of _stext symbol in the vmlinux image. Alas,
 			// the caller may skip reading it from the binary (it's expensive to scan
@@ -313,7 +313,7 @@ func ProgramHeadersForMapping(phdrs []elf.ProgHeader, mapOff, mapSz uint64) []*e
 		// value is dependent on the memory management unit of the CPU. The page
 		// size is 4KB virtually on all the architectures that we care about, so we
 		// define this metric as a constant. If we encounter architectures where
-		// page sie is not 4KB, we must try to guess the page size on the system
+		// page size is not 4KB, we must try to guess the page size on the system
 		// where the profile was collected, possibly using the architecture
 		// specified in the ELF file header.
 		pageSize       = 4096
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/graph/graph.go b/src/cmd/vendor/github.com/google/pprof/internal/graph/graph.go
index 8abbd83f76..c4b0d4869f 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/graph/graph.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/graph/graph.go
@@ -336,12 +336,8 @@ func newGraph(prof *profile.Profile, o *Options) (*Graph, map[uint64]Nodes) {
 		if dw == 0 && w == 0 {
 			continue
 		}
-		for k := range seenNode {
-			delete(seenNode, k)
-		}
-		for k := range seenEdge {
-			delete(seenEdge, k)
-		}
+		clear(seenNode)
+		clear(seenEdge)
 		var parent *Node
 		// A residual edge goes over one or more nodes that were not kept.
 		residual := false
@@ -850,10 +846,7 @@ func (g *Graph) selectTopNodes(maxNodes int, visualMode bool) Nodes {
 			// If generating a visual graph, count tags as nodes. Update
 			// maxNodes to account for them.
 			for i, n := range g.Nodes {
-				tags := countTags(n)
-				if tags > maxNodelets {
-					tags = maxNodelets
-				}
+				tags := min(countTags(n), maxNodelets)
 				if count += tags + 1; count >= maxNodes {
 					maxNodes = i + 1
 					break
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/measurement/measurement.go b/src/cmd/vendor/github.com/google/pprof/internal/measurement/measurement.go
index e5b7dbc6c4..479235c0a6 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/measurement/measurement.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/measurement/measurement.go
@@ -18,6 +18,7 @@ package measurement
 import (
 	"fmt"
 	"math"
+	"slices"
 	"strings"
 	"time"
 
@@ -197,16 +198,14 @@ type UnitType struct {
 // nil if the unit with such alias is not found.
 func (ut UnitType) findByAlias(alias string) *Unit {
 	for _, u := range ut.Units {
-		for _, a := range u.aliases {
-			if alias == a {
-				return &u
-			}
+		if slices.Contains(u.aliases, alias) {
+			return &u
 		}
 	}
 	return nil
 }
 
-// sniffUnit simpifies the input alias and returns the unit associated with the
+// sniffUnit simplifies the input alias and returns the unit associated with the
 // specified alias. It returns nil if the unit with such alias is not found.
 func (ut UnitType) sniffUnit(unit string) *Unit {
 	unit = strings.ToLower(unit)
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/report/report.go b/src/cmd/vendor/github.com/google/pprof/internal/report/report.go
index 9d52872b7d..ad8b84bf80 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/report/report.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/report/report.go
@@ -569,7 +569,7 @@ func symbolsFromBinaries(prof *profile.Profile, g *graph.Graph, rx *regexp.Regex
 	return objSyms
 }
 
-// objSym represents a symbol identified from a binary. It includes
+// objSymbol represents a symbol identified from a binary. It includes
 // the SymbolInfo from the disasm package and the base that must be
 // added to correspond to sample addresses
 type objSymbol struct {
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/report/source.go b/src/cmd/vendor/github.com/google/pprof/internal/report/source.go
index d2148607ea..f17952faee 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/report/source.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/report/source.go
@@ -25,6 +25,7 @@ import (
 	"os"
 	"path/filepath"
 	"regexp"
+	"slices"
 	"sort"
 	"strconv"
 	"strings"
@@ -490,7 +491,7 @@ func (sp *sourcePrinter) addStack(addr uint64, frames []plugin.Frame) {
 		file.lines[f.Line] = append(file.lines[f.Line], sourceInst{addr, stack})
 
 		// Remember the first function name encountered per source line
-		// and assume that that line belongs to that function.
+		// and assume that line belongs to that function.
 		if _, ok := file.funcName[f.Line]; !ok {
 			file.funcName[f.Line] = f.Func
 		}
@@ -553,7 +554,7 @@ func (sp *sourcePrinter) splitIntoRanges(prof *profile.Profile, addrMap map[uint
 			unprocessed = append(unprocessed, addr)
 		}
 	}
-	sort.Slice(addrs, func(i, j int) bool { return addrs[i] < addrs[j] })
+	slices.Sort(addrs)
 
 	const expand = 500 // How much to expand range to pick up nearby addresses.
 	var result []addressRange
@@ -769,10 +770,7 @@ func (sp *sourcePrinter) functions(f *sourceFile) []sourceFunction {
 			}
 		} else {
 			// Find gap from predecessor and divide between predecessor and f.
-			halfGap := (f.begin - funcs[i-1].end) / 2
-			if halfGap > expand {
-				halfGap = expand
-			}
+			halfGap := min((f.begin-funcs[i-1].end)/2, expand)
 			funcs[i-1].end += halfGap
 			f.begin -= halfGap
 		}
diff --git a/src/cmd/vendor/github.com/google/pprof/internal/symbolizer/symbolizer.go b/src/cmd/vendor/github.com/google/pprof/internal/symbolizer/symbolizer.go
index 95c15b1366..3a279eca75 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/symbolizer/symbolizer.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/symbolizer/symbolizer.go
@@ -281,14 +281,11 @@ func demanglerModeToOptions(demanglerMode string) []demangle.Option {
 	panic(fmt.Sprintf("unknown demanglerMode %s", demanglerMode))
 }
 
-func demangleSingleFunction(fn *profile.Function, options []demangle.Option) {
+func demangleSingleFunction(fn *profile.Function, opts []demangle.Option) {
 	if fn.Name != "" && fn.SystemName != fn.Name {
 		return // Already demangled.
 	}
-	// Copy the options because they may be updated by the call.
-	o := make([]demangle.Option, len(options))
-	copy(o, options)
-	if demangled := demangle.Filter(fn.SystemName, o...); demangled != fn.SystemName {
+	if demangled := demangle.Filter(fn.SystemName, opts...); demangled != fn.SystemName {
 		fn.Name = demangled
 		return
 	}
@@ -296,7 +293,7 @@ func demangleSingleFunction(fn *profile.Function, options []demangle.Option) {
 	// OSX has all the symbols prefixed with extra '_' so lets try
 	// once more without it
 	if strings.HasPrefix(fn.SystemName, "_") {
-		if demangled := demangle.Filter(fn.SystemName[1:], o...); demangled != fn.SystemName {
+		if demangled := demangle.Filter(fn.SystemName[1:], opts...); demangled != fn.SystemName[1:] {
 			fn.Name = demangled
 			return
 		}
@@ -306,7 +303,7 @@ func demangleSingleFunction(fn *profile.Function, options []demangle.Option) {
 	// already demangled.
 	name := fn.SystemName
 	if looksLikeDemangledCPlusPlus(name) {
-		for _, o := range options {
+		for _, o := range opts {
 			switch o {
 			case demangle.NoParams:
 				name = removeMatching(name, '(', ')')
diff --git a/src/cmd/vendor/github.com/google/pprof/profile/merge.go b/src/cmd/vendor/github.com/google/pprof/profile/merge.go
index ba4d746407..8a51690be4 100644
--- a/src/cmd/vendor/github.com/google/pprof/profile/merge.go
+++ b/src/cmd/vendor/github.com/google/pprof/profile/merge.go
@@ -17,6 +17,7 @@ package profile
 import (
 	"encoding/binary"
 	"fmt"
+	"slices"
 	"sort"
 	"strconv"
 	"strings"
@@ -78,12 +79,10 @@ func Merge(srcs []*Profile) (*Profile, error) {
 		}
 	}
 
-	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})
-		}
+	if slices.ContainsFunc(p.Sample, isZeroSample) {
+		// If there are any zero samples, re-merge the profile to GC
+		// them.
+		return Merge([]*Profile{p})
 	}
 
 	return p, nil
diff --git a/src/cmd/vendor/github.com/google/pprof/profile/profile.go b/src/cmd/vendor/github.com/google/pprof/profile/profile.go
index f47a243903..43f561d445 100644
--- a/src/cmd/vendor/github.com/google/pprof/profile/profile.go
+++ b/src/cmd/vendor/github.com/google/pprof/profile/profile.go
@@ -24,6 +24,7 @@ import (
 	"math"
 	"path/filepath"
 	"regexp"
+	"slices"
 	"sort"
 	"strings"
 	"sync"
@@ -734,12 +735,7 @@ func (p *Profile) RemoveLabel(key string) {
 
 // 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
+	return slices.Contains(s.Label[key], value)
 }
 
 // SetNumLabel sets the specified key to the specified value for all samples in the
@@ -852,7 +848,17 @@ func (p *Profile) HasFileLines() bool {
 // "[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"
+	switch {
+	case strings.HasPrefix(name, "["):
+	case strings.HasPrefix(name, "linux-vdso"):
+	case strings.HasPrefix(m.File, "/dev/dri/"):
+	case m.File == "//anon":
+	case m.File == "":
+	case strings.HasPrefix(m.File, "/memfd:"):
+	default:
+		return false
+	}
+	return true
 }
 
 // Copy makes a fully independent copy of a profile.
diff --git a/src/cmd/vendor/github.com/google/pprof/profile/prune.go b/src/cmd/vendor/github.com/google/pprof/profile/prune.go
index b2f9fd5466..7bba31e8ce 100644
--- a/src/cmd/vendor/github.com/google/pprof/profile/prune.go
+++ b/src/cmd/vendor/github.com/google/pprof/profile/prune.go
@@ -19,6 +19,7 @@ package profile
 import (
 	"fmt"
 	"regexp"
+	"slices"
 	"strings"
 )
 
@@ -40,13 +41,7 @@ func simplifyFunc(f string) string {
 	// 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
-			}
-		}
+		foundReserved := slices.Contains(reservedNames, funcName[ind[0]:ind[1]])
 		if !foundReserved {
 			funcName = funcName[:ind[0]]
 			break
diff --git a/src/cmd/vendor/github.com/google/pprof/third_party/svgpan/svgpan.js b/src/cmd/vendor/github.com/google/pprof/third_party/svgpan/svgpan.js
index 2c4951ecd3..dda7f0f041 100644
--- a/src/cmd/vendor/github.com/google/pprof/third_party/svgpan/svgpan.js
+++ b/src/cmd/vendor/github.com/google/pprof/third_party/svgpan/svgpan.js
@@ -3,7 +3,7 @@
  * ======================
  *
  * Given an unique existing element with id "viewport" (or when missing, the 
- * first g-element), including the the library into any SVG adds the following 
+ * first g-element), including the library into any SVG adds the following 
  * capabilities:
  *
  *  - Mouse panning
diff --git a/src/cmd/vendor/github.com/ianlancetaylor/demangle/demangle.go b/src/cmd/vendor/github.com/ianlancetaylor/demangle/demangle.go
index dc238e0773..b812d35ac2 100644
--- a/src/cmd/vendor/github.com/ianlancetaylor/demangle/demangle.go
+++ b/src/cmd/vendor/github.com/ianlancetaylor/demangle/demangle.go
@@ -186,7 +186,7 @@ func ToAST(name string, options ...Option) (AST, error) {
 		i := 0
 		for i < len(options) {
 			if options[i] == NoParams {
-				options = append(options[:i], options[i+1:]...)
+				options = append(options[:i:i], options[i+1:]...)
 			} else {
 				i++
 			}