package standard library
go1.22.3 Latest Latest

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Published: May 7, 2024 License: BSD-3-Clause Imports: 20 Imported by: 0




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const CommonStyle = `` /* 880-byte string literal not displayed */


This section is empty.


func BuildProfile

func BuildProfile(prof []ProfileRecord) *profile.Profile

func MMUHandlerFunc

func MMUHandlerFunc(ranges []Range, f MutatorUtilFunc) http.HandlerFunc

func MainHandler

func MainHandler(views []View) http.Handler

func SVGProfileHandlerFunc

func SVGProfileHandlerFunc(f ProfileFunc) http.HandlerFunc

SVGProfileHandlerFunc serves pprof-like profile generated by prof as svg.

func StaticHandler

func StaticHandler() http.Handler

func TraceHandler

func TraceHandler() http.Handler

func WalkStackFrames

func WalkStackFrames(allFrames map[string]format.Frame, id int, fn func(id int))

WalkStackFrames calls fn for id and all of its parent frames from allFrames.


type ArrowEvent

type ArrowEvent struct {
	Name         string
	Start        time.Duration
	End          time.Duration
	FromResource uint64
	FromStack    int
	ToResource   uint64

type AsyncSliceEvent

type AsyncSliceEvent struct {
	Category       string
	Scope          string
	TaskColorIndex uint64 // Take on the same color as the task with this ID.

type Emitter

type Emitter struct {
	// contains filtered or unexported fields

func NewEmitter

func NewEmitter(c TraceConsumer, rangeStart, rangeEnd time.Duration) *Emitter

NewEmitter returns a new Emitter that writes to c. The rangeStart and rangeEnd args are used for splitting large traces.

func (*Emitter) Arrow

func (e *Emitter) Arrow(a ArrowEvent)

func (*Emitter) AsyncSlice

func (e *Emitter) AsyncSlice(s AsyncSliceEvent)

func (*Emitter) Err

func (e *Emitter) Err() error

Err returns an error if the emitter is in an invalid state.

func (*Emitter) Event

func (e *Emitter) Event(ev *format.Event)

func (*Emitter) Flush

func (e *Emitter) Flush()

func (*Emitter) Focus

func (e *Emitter) Focus(id uint64)

func (*Emitter) Gomaxprocs

func (e *Emitter) Gomaxprocs(v uint64)

func (*Emitter) GoroutineTransition

func (e *Emitter) GoroutineTransition(ts time.Duration, from, to GState)

func (*Emitter) HeapAlloc

func (e *Emitter) HeapAlloc(ts time.Duration, v uint64)

func (*Emitter) HeapGoal

func (e *Emitter) HeapGoal(ts time.Duration, v uint64)

func (*Emitter) IncThreadStateCount

func (e *Emitter) IncThreadStateCount(ts time.Duration, state ThreadState, delta int64)

func (*Emitter) Instant

func (e *Emitter) Instant(i InstantEvent)

func (*Emitter) OptionalEvent

func (e *Emitter) OptionalEvent(ev *format.Event)

OptionalEvent emits ev if it's within the time range of of the consumer, i.e. the selected trace split range.

func (*Emitter) Resource

func (e *Emitter) Resource(id uint64, name string)

func (*Emitter) SetResourceFilter

func (e *Emitter) SetResourceFilter(filter func(uint64) bool)

func (*Emitter) SetResourceType

func (e *Emitter) SetResourceType(name string)

func (*Emitter) Slice

func (e *Emitter) Slice(s SliceEvent)

func (*Emitter) Stack

func (e *Emitter) Stack(stk []*trace.Frame) int

Stack emits the given frames and returns a unique id for the stack. No pointers to the given data are being retained beyond the call to Stack.

func (*Emitter) Task

func (e *Emitter) Task(id uint64, name string, sortIndex int)

func (*Emitter) TaskArrow

func (e *Emitter) TaskArrow(a ArrowEvent)

func (*Emitter) TaskSlice

func (e *Emitter) TaskSlice(s SliceEvent)

type GState

type GState int
const (
	GDead GState = iota

type InstantEvent

type InstantEvent struct {
	Ts       time.Duration
	Name     string
	Category string
	Resource uint64
	Stack    int
	Arg      any

type Mode

type Mode int
const (
	ModeGoroutineOriented Mode = 1 << iota
	ModeThreadOriented // Mutually exclusive with ModeGoroutineOriented.

type MutatorUtilFunc

type MutatorUtilFunc func(trace.UtilFlags) ([][]trace.MutatorUtil, error)

type ProfileFunc

type ProfileFunc func(r *http.Request) ([]ProfileRecord, error)

type ProfileRecord

type ProfileRecord struct {
	Stack []*trace.Frame
	Count uint64
	Time  time.Duration

type Range

type Range struct {
	Name      string
	Start     int
	End       int
	StartTime int64
	EndTime   int64

func (Range) URL

func (r Range) URL(viewType ViewType) string

type SliceEvent

type SliceEvent struct {
	Name     string
	Ts       time.Duration
	Dur      time.Duration
	Resource uint64
	Stack    int
	EndStack int
	Arg      any

type ThreadState

type ThreadState int
const (
	ThreadStateInSyscall ThreadState = iota

type TimeHistogram

type TimeHistogram struct {
	Count                int
	Buckets              []int
	MinBucket, MaxBucket int

TimeHistogram is an high-dynamic-range histogram for durations.

func (*TimeHistogram) Add

func (h *TimeHistogram) Add(d time.Duration)

Add adds a single sample to the histogram.

func (*TimeHistogram) BucketMin

func (h *TimeHistogram) BucketMin(bucket int) time.Duration

BucketMin returns the minimum duration value for a provided bucket.

func (*TimeHistogram) ToHTML

func (h *TimeHistogram) ToHTML(urlmaker func(min, max time.Duration) string) template.HTML

ToHTML renders the histogram as HTML.

type TraceConsumer

type TraceConsumer struct {
	ConsumeTimeUnit    func(unit string)
	ConsumeViewerEvent func(v *format.Event, required bool)
	ConsumeViewerFrame func(key string, f format.Frame)
	Flush              func()

func SplittingTraceConsumer

func SplittingTraceConsumer(max int) (*splitter, TraceConsumer)

func ViewerDataTraceConsumer

func ViewerDataTraceConsumer(w io.Writer, startIdx, endIdx int64) TraceConsumer

ViewerDataTraceConsumer returns a TraceConsumer that writes to w. The startIdx and endIdx are used for splitting large traces. They refer to indexes in the traceEvents output array, not the events in the trace input.

type View

type View struct {
	Type   ViewType
	Ranges []Range

func (View) URL

func (v View) URL(rangeIdx int) string

type ViewType

type ViewType string
const (
	ViewProc   ViewType = "proc"
	ViewThread ViewType = "thread"


Path Synopsis
Package traceviewer provides definitions of the JSON data structures used by the Chrome trace viewer.
Package traceviewer provides definitions of the JSON data structures used by the Chrome trace viewer.

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