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Published: Apr 19, 2022 License: BSD-2-Clause Imports: 2 Imported by: 0


Rendered for js/wasm



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const (
	GOOS     = sys.GOOS
	GOARCH   = "js"
	Compiler = "gopherjs"


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var MemProfileRate int = 512 * 1024


func Breakpoint

func Breakpoint()

func Caller

func Caller(skip int) (pc uintptr, file string, line int, ok bool)

func Callers

func Callers(skip int, pc []uintptr) int

func GC

func GC()


func GOMAXPROCS(int) int


func GOROOT() string

func Goexit

func Goexit()

func Gosched

func Gosched()

func KeepAlive

func KeepAlive(interface{})

func LockOSThread

func LockOSThread()

func NumCPU

func NumCPU() int

func NumCgoCall

func NumCgoCall() int64

We fake a cgo environment to catch errors. Therefor we have to implement this and always return 0

func NumGoroutine

func NumGoroutine() int

func ParseCallFrame added in v1.17.2

func ParseCallFrame(info *js.Object) basicFrame

ParseCallFrame is exported for the sake of testing. See this discussion for context

TLDR; never use this function!

func ReadMemStats

func ReadMemStats(m *MemStats)

func ReadTrace

func ReadTrace() []byte

func SetBlockProfileRate

func SetBlockProfileRate(rate int)

func SetFinalizer

func SetFinalizer(x, f interface{})

func SetMutexProfileFraction

func SetMutexProfileFraction(rate int) int

func Stack

func Stack(buf []byte, all bool) int

func StartTrace

func StartTrace() error

func StopTrace

func StopTrace()

func UnlockOSThread

func UnlockOSThread()

func Version

func Version() string


type Error added in v1.17.2

type Error interface {

	// RuntimeError is a no-op function but
	// serves to distinguish types that are run time
	// errors from ordinary errors: a type is a
	// run time error if it has a RuntimeError method.

The Error interface identifies a run time error.

type Frame

type Frame struct {
	PC       uintptr
	Func     *Func
	Function string
	File     string
	Line     int
	Entry    uintptr

type Frames

type Frames struct {
	// contains filtered or unexported fields

func CallersFrames

func CallersFrames(callers []uintptr) *Frames

func (*Frames) Next

func (ci *Frames) Next() (frame Frame, more bool)

type Func

type Func struct {
	// contains filtered or unexported fields

func FuncForPC

func FuncForPC(pc uintptr) *Func

func (*Func) Entry

func (_ *Func) Entry() uintptr

func (*Func) FileLine

func (f *Func) FileLine(pc uintptr) (file string, line int)

func (*Func) Name

func (f *Func) Name() string

type MemStats

type MemStats struct {
	// General statistics.
	Alloc      uint64 // bytes allocated and still in use
	TotalAlloc uint64 // bytes allocated (even if freed)
	Sys        uint64 // bytes obtained from system (sum of XxxSys below)
	Lookups    uint64 // number of pointer lookups
	Mallocs    uint64 // number of mallocs
	Frees      uint64 // number of frees

	// Main allocation heap statistics.
	HeapAlloc    uint64 // bytes allocated and still in use
	HeapSys      uint64 // bytes obtained from system
	HeapIdle     uint64 // bytes in idle spans
	HeapInuse    uint64 // bytes in non-idle span
	HeapReleased uint64 // bytes released to the OS
	HeapObjects  uint64 // total number of allocated objects

	// Low-level fixed-size structure allocator statistics.
	//	Inuse is bytes used now.
	//	Sys is bytes obtained from system.
	StackInuse  uint64 // bytes used by stack allocator
	StackSys    uint64
	MSpanInuse  uint64 // mspan structures
	MSpanSys    uint64
	MCacheInuse uint64 // mcache structures
	MCacheSys   uint64
	BuckHashSys uint64 // profiling bucket hash table
	GCSys       uint64 // GC metadata
	OtherSys    uint64 // other system allocations

	// Garbage collector statistics.
	NextGC        uint64 // next collection will happen when HeapAlloc ≥ this amount
	LastGC        uint64 // end time of last collection (nanoseconds since 1970)
	PauseTotalNs  uint64
	PauseNs       [256]uint64 // circular buffer of recent GC pause durations, most recent at [(NumGC+255)%256]
	PauseEnd      [256]uint64 // circular buffer of recent GC pause end times
	NumGC         uint32
	GCCPUFraction float64 // fraction of CPU time used by GC
	EnableGC      bool
	DebugGC       bool

	// Per-size allocation statistics.
	// 61 is NumSizeClasses in the C code.
	BySize [61]struct {
		Size    uint32
		Mallocs uint64
		Frees   uint64

type TypeAssertionError added in v1.17.2

type TypeAssertionError struct {
	// contains filtered or unexported fields

A TypeAssertionError explains a failed type assertion.

func (*TypeAssertionError) Error added in v1.17.2

func (e *TypeAssertionError) Error() string

func (*TypeAssertionError) RuntimeError added in v1.17.2

func (*TypeAssertionError) RuntimeError()


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