profiler

Documentation

Overview

Package profiler implements the Profiler domain.

Index

• func NewClient(conn *rpcc.Conn) *domainClient
• type ConsoleProfileFinishedClient
• type ConsoleProfileFinishedReply
• type ConsoleProfileStartedClient
• type ConsoleProfileStartedReply
• type CoverageRange
• type FunctionCoverage
• type GetBestEffortCoverageReply
• type PositionTickInfo
• type Profile
• type ProfileNode
• type ScriptCoverage
• type SetSamplingIntervalArgs
  • func NewSetSamplingIntervalArgs(interval int) *SetSamplingIntervalArgs
• type StartPreciseCoverageArgs
  • func NewStartPreciseCoverageArgs() *StartPreciseCoverageArgs
  • func (a *StartPreciseCoverageArgs) SetCallCount(callCount bool) *StartPreciseCoverageArgs
• type StopReply
• type TakePreciseCoverageReply

Functions

func NewClient

func NewClient(conn *rpcc.Conn) *domainClient

NewClient returns a client for the Profiler domain with the connection set to conn.

Types

type ConsoleProfileFinishedClient

type ConsoleProfileFinishedClient interface {
	// Recv calls RecvMsg on rpcc.Stream, blocks until the event is
	// triggered, context canceled or connection closed.
	Recv() (*ConsoleProfileFinishedReply, error)
	rpcc.Stream
}

ConsoleProfileFinishedClient is a client for ConsoleProfileFinished events.

type ConsoleProfileFinishedReply

type ConsoleProfileFinishedReply struct {
	ID       string            `json:"id"`              // No description.
	Location debugger.Location `json:"location"`        // Location of console.profileEnd().
	Profile  Profile           `json:"profile"`         // No description.
	Title    *string           `json:"title,omitempty"` // Profile title passed as an argument to console.profile().
}

ConsoleProfileFinishedReply is the reply for ConsoleProfileFinished events.

type ConsoleProfileStartedClient

type ConsoleProfileStartedClient interface {
	// Recv calls RecvMsg on rpcc.Stream, blocks until the event is
	// triggered, context canceled or connection closed.
	Recv() (*ConsoleProfileStartedReply, error)
	rpcc.Stream
}

ConsoleProfileStartedClient is a client for ConsoleProfileStarted events. Sent when new profile recording is started using console.profile() call.

type ConsoleProfileStartedReply

type ConsoleProfileStartedReply struct {
	ID       string            `json:"id"`              // No description.
	Location debugger.Location `json:"location"`        // Location of console.profile().
	Title    *string           `json:"title,omitempty"` // Profile title passed as an argument to console.profile().
}

ConsoleProfileStartedReply is the reply for ConsoleProfileStarted events.

type CoverageRange

type CoverageRange struct {
	StartOffset int `json:"startOffset"` // JavaScript script source offset for the range start.
	EndOffset   int `json:"endOffset"`   // JavaScript script source offset for the range end.
	Count       int `json:"count"`       // Collected execution count of the source range.
}

CoverageRange Coverage data for a source range.

Note: This type is experimental.

type FunctionCoverage

type FunctionCoverage struct {
	FunctionName    string          `json:"functionName"`    // JavaScript function name.
	Ranges          []CoverageRange `json:"ranges"`          // Source ranges inside the function with coverage data.
	IsBlockCoverage bool            `json:"isBlockCoverage"` // Whether coverage data for this function has block granularity.
}

FunctionCoverage Coverage data for a JavaScript function.

Note: This type is experimental.

type GetBestEffortCoverageReply

type GetBestEffortCoverageReply struct {
	Result []ScriptCoverage `json:"result"` // Coverage data for the current isolate.
}

GetBestEffortCoverageReply represents the return values for GetBestEffortCoverage in the Profiler domain.

type PositionTickInfo

type PositionTickInfo struct {
	Line  int `json:"line"`  // Source line number (1-based).
	Ticks int `json:"ticks"` // Number of samples attributed to the source line.
}

PositionTickInfo Specifies a number of samples attributed to a certain source position.

Note: This type is experimental.

type Profile

type Profile struct {
	Nodes      []ProfileNode `json:"nodes"`                // The list of profile nodes. First item is the root node.
	StartTime  float64       `json:"startTime"`            // Profiling start timestamp in microseconds.
	EndTime    float64       `json:"endTime"`              // Profiling end timestamp in microseconds.
	Samples    []int         `json:"samples,omitempty"`    // Ids of samples top nodes.
	TimeDeltas []int         `json:"timeDeltas,omitempty"` // Time intervals between adjacent samples in microseconds. The first delta is relative to the profile startTime.
}

Profile Profile.

type ProfileNode

type ProfileNode struct {
	ID        int               `json:"id"`        // Unique id of the node.
	CallFrame runtime.CallFrame `json:"callFrame"` // Function location.
	// HitCount Number of samples where this node was on top of the call stack.
	//
	// Note: This property is experimental.
	HitCount    *int    `json:"hitCount,omitempty"`
	Children    []int   `json:"children,omitempty"`    // Child node ids.
	DeoptReason *string `json:"deoptReason,omitempty"` // The reason of being not optimized. The function may be deoptimized or marked as don't optimize.
	// PositionTicks An array of source position ticks.
	//
	// Note: This property is experimental.
	PositionTicks []PositionTickInfo `json:"positionTicks,omitempty"`
}

ProfileNode Profile node. Holds callsite information, execution statistics and child nodes.

type ScriptCoverage

type ScriptCoverage struct {
	ScriptID  runtime.ScriptID   `json:"scriptId"`  // JavaScript script id.
	URL       string             `json:"url"`       // JavaScript script name or url.
	Functions []FunctionCoverage `json:"functions"` // Functions contained in the script that has coverage data.
}

ScriptCoverage Coverage data for a JavaScript script.

Note: This type is experimental.

type SetSamplingIntervalArgs

type SetSamplingIntervalArgs struct {
	Interval int `json:"interval"` // New sampling interval in microseconds.
}

SetSamplingIntervalArgs represents the arguments for SetSamplingInterval in the Profiler domain.

func NewSetSamplingIntervalArgs

func NewSetSamplingIntervalArgs(interval int) *SetSamplingIntervalArgs

NewSetSamplingIntervalArgs initializes SetSamplingIntervalArgs with the required arguments.

type StartPreciseCoverageArgs

type StartPreciseCoverageArgs struct {
	CallCount *bool `json:"callCount,omitempty"` // Collect accurate call counts beyond simple 'covered' or 'not covered'.
}

StartPreciseCoverageArgs represents the arguments for StartPreciseCoverage in the Profiler domain.

func NewStartPreciseCoverageArgs

func NewStartPreciseCoverageArgs() *StartPreciseCoverageArgs

NewStartPreciseCoverageArgs initializes StartPreciseCoverageArgs with the required arguments.

func (*StartPreciseCoverageArgs) SetCallCount

func (a *StartPreciseCoverageArgs) SetCallCount(callCount bool) *StartPreciseCoverageArgs

SetCallCount sets the CallCount optional argument. Collect accurate call counts beyond simple 'covered' or 'not covered'.

type StopReply

type StopReply struct {
	Profile Profile `json:"profile"` // Recorded profile.
}

StopReply represents the return values for Stop in the Profiler domain.

type TakePreciseCoverageReply

type TakePreciseCoverageReply struct {
	Result []ScriptCoverage `json:"result"` // Coverage data for the current isolate.
}

TakePreciseCoverageReply represents the return values for TakePreciseCoverage in the Profiler domain.