capture

Documentation

Overview

Package capture contains all the core GAPIS functionality for dealing with loaded captures.

Index

• Constants
• func Captures() []*path.Capture
• func Export(ctx context.Context, p *path.Capture, w io.Writer) error
• func Get(ctx context.Context) *path.Capture
• func Import(ctx context.Context, name string, key string, src Source) (*path.Capture, error)
• func New(ctx context.Context, c Capture) (*path.Capture, error)
• func NewState(ctx context.Context) (*api.GlobalState, error)
• func Put(ctx context.Context, c *path.Capture) context.Context
• type Capture
  • func Resolve(ctx context.Context) (Capture, error)
  • func ResolveFromID(ctx context.Context, id id.ID) (Capture, error)
  • func ResolveFromPath(ctx context.Context, p *path.Capture) (Capture, error)
• type ErrUnsupportedVersion
  • func (e ErrUnsupportedVersion) Error() string
• type GraphicsCapture
  • func NewGraphicsCapture(ctx context.Context, name string, header *Header, initialState *InitialState, ...) (*GraphicsCapture, error)
  • func ResolveGraphics(ctx context.Context) (*GraphicsCapture, error)
  • func ResolveGraphicsFromID(ctx context.Context, id id.ID) (*GraphicsCapture, error)
  • func ResolveGraphicsFromPath(ctx context.Context, p *path.Capture) (*GraphicsCapture, error)
  • func (c *GraphicsCapture) CloneInitialState() *InitialState
  • func (c *GraphicsCapture) Export(ctx context.Context, w io.Writer) error
  • func (g *GraphicsCapture) Name() string
  • func (c *GraphicsCapture) NewState(ctx context.Context) *api.GlobalState
  • func (c *GraphicsCapture) NewUninitializedState(ctx context.Context) *api.GlobalState
  • func (c *GraphicsCapture) NewUninitializedStateSharingAllocator(ctx context.Context, oldGlobalState *api.GlobalState) *api.GlobalState
  • func (g *GraphicsCapture) Path(ctx context.Context) (*path.Capture, error)
  • func (c *GraphicsCapture) Service(ctx context.Context, p *path.Capture) *service.Capture
• type InitialState
• type PerfettoCapture
  • func ResolvePerfetto(ctx context.Context) (*PerfettoCapture, error)
  • func ResolvePerfettoFromID(ctx context.Context, id id.ID) (*PerfettoCapture, error)
  • func ResolvePerfettoFromPath(ctx context.Context, p *path.Capture) (*PerfettoCapture, error)
  • func (c *PerfettoCapture) Export(ctx context.Context, w io.Writer) error
  • func (c *PerfettoCapture) Name() string
  • func (c *PerfettoCapture) Service(ctx context.Context, p *path.Capture) *service.Capture
• type Source

Constants

const (
	// CurrentCaptureVersion is incremented on breaking changes to the capture format.
	// NB: Also update equally named field in gapii/cc/spy_base.cpp
	CurrentCaptureVersion int32 = 4
)

Functions

func Captures

func Captures() []*path.Capture

Captures returns all the captures stored by the database by identifier.

func Export

func Export(ctx context.Context, p *path.Capture, w io.Writer) error

Export encodes the given capture and associated resources and writes it to the supplied io.Writer in the pack file format, producing output suitable for use with Import or opening in the trace editor.

func Get

func Get(ctx context.Context) *path.Capture

Get retrieves the capture path from a context previously annotated by Put.

func Import

func Import(ctx context.Context, name string, key string, src Source) (*path.Capture, error)

Import imports the capture by name and data, and stores it in the database.

func New

func New(ctx context.Context, c Capture) (*path.Capture, error)

New returns a path to a new capture stored in the database.

func NewState

func NewState(ctx context.Context) (*api.GlobalState, error)

NewState returns a new, default-initialized State object built for the capture held by the context.

func Put

func Put(ctx context.Context, c *path.Capture) context.Context

Put attaches a capture path to a Context.

Types

type Capture

type Capture interface {
	// Name returns the name of the capture.
	Name() string
	// Service returns the service.Capture description for this capture.
	Service(ctx context.Context, p *path.Capture) *service.Capture
	// Export exports the capture in binary format to the given writer.
	Export(ctx context.Context, w io.Writer) error
}

Capture represents data from a trace.

func Resolve

func Resolve(ctx context.Context) (Capture, error)

Resolve resolves the capture from a context previously annotated by Put.

func ResolveFromID

func ResolveFromID(ctx context.Context, id id.ID) (Capture, error)

ResolveFromID resolves a single capture with the ID id.

func ResolveFromPath

func ResolveFromPath(ctx context.Context, p *path.Capture) (Capture, error)

ResolveFromPath resolves a single capture with the path p.

type ErrUnsupportedVersion

type ErrUnsupportedVersion struct{ Version int32 }

func (ErrUnsupportedVersion) Error

func (e ErrUnsupportedVersion) Error() string

type GraphicsCapture

type GraphicsCapture struct {
	Header       *Header
	Commands     []api.Cmd
	APIs         []api.API
	Observed     interval.U64RangeList
	InitialState *InitialState
	Messages     []*TraceMessage
	// contains filtered or unexported fields
}

func NewGraphicsCapture

func NewGraphicsCapture(ctx context.Context, name string, header *Header, initialState *InitialState, cmds []api.Cmd) (*GraphicsCapture, error)

NewGraphicsCapture returns a new graphics capture with the given values.

func ResolveGraphics

func ResolveGraphics(ctx context.Context) (*GraphicsCapture, error)

ResolveGraphics resolves the capture from a context previously annotated by Put, and ensures that it is a graphics capture.

func ResolveGraphicsFromID

func ResolveGraphicsFromID(ctx context.Context, id id.ID) (*GraphicsCapture, error)

ResolveGraphicsFromID resolves a single graphics capture with the ID id.

func ResolveGraphicsFromPath

func ResolveGraphicsFromPath(ctx context.Context, p *path.Capture) (*GraphicsCapture, error)

ResolveGraphicsFromPath resolves a single graphics capture with the path p.

func (*GraphicsCapture) CloneInitialState

func (c *GraphicsCapture) CloneInitialState() *InitialState

CloneInitialState clones this capture's initial state and returns it.

func (*GraphicsCapture) Export

func (c *GraphicsCapture) Export(ctx context.Context, w io.Writer) error

Export encodes the given capture and associated resources and writes it to the supplied io.Writer in the .gfxtrace format.

func (*GraphicsCapture) Name

func (g *GraphicsCapture) Name() string

Name returns the capture's name.

func (*GraphicsCapture) NewState

func (c *GraphicsCapture) NewState(ctx context.Context) *api.GlobalState

NewState returns a new, initialized GlobalState object built for the capture c. If the capture contains a mid-execution state, then this will be copied into the returned state.

func (*GraphicsCapture) NewUninitializedState

func (c *GraphicsCapture) NewUninitializedState(ctx context.Context) *api.GlobalState

NewUninitializedState returns a new, uninitialized GlobalState built for the capture c. The returned state does not contain the capture's mid-execution state.

func (*GraphicsCapture) NewUninitializedStateSharingAllocator

func (c *GraphicsCapture) NewUninitializedStateSharingAllocator(ctx context.Context, oldGlobalState *api.GlobalState) *api.GlobalState

func (*GraphicsCapture) Path

func (g *GraphicsCapture) Path(ctx context.Context) (*path.Capture, error)

Path returns the path of this capture in the database.

func (*GraphicsCapture) Service

func (c *GraphicsCapture) Service(ctx context.Context, p *path.Capture) *service.Capture

Service returns the service.Capture description for this capture.

type InitialState

type InitialState struct {
	Memory []api.CmdObservation
	APIs   map[api.API]api.State
}

type PerfettoCapture

type PerfettoCapture struct {
	Processor *perfetto.Processor
	// contains filtered or unexported fields
}

func ResolvePerfetto

func ResolvePerfetto(ctx context.Context) (*PerfettoCapture, error)

ResolvePerfetto resolves the capture from a context previously annotated by Put, and ensures that it is a perfetto capture.

func ResolvePerfettoFromID

func ResolvePerfettoFromID(ctx context.Context, id id.ID) (*PerfettoCapture, error)

ResolvePerfettoFromID resolves a single perfetto capture with the ID id.

func ResolvePerfettoFromPath

func ResolvePerfettoFromPath(ctx context.Context, p *path.Capture) (*PerfettoCapture, error)

ResolvePerfettoFromPath resolves a single perfetto capture with the path p.

func (*PerfettoCapture) Export

func (c *PerfettoCapture) Export(ctx context.Context, w io.Writer) error

func (*PerfettoCapture) Name

func (c *PerfettoCapture) Name() string

func (*PerfettoCapture) Service

func (c *PerfettoCapture) Service(ctx context.Context, p *path.Capture) *service.Capture

type Source

type Source interface {
	// ReadCloser returns an io.ReadCloser instance, from which capture data
	// can be read and closed after reading.
	ReadCloser() (io.ReadCloser, error)
	// Size returns the total size in bytes of this source.
	Size() (uint64, error)
}

Source represents the source of capture data.