go/src/cmd/go/internal/trace/trace.go

const phaseDurationBegin …

const phaseDurationEnd …

const phaseFlowStart …

const phaseFlowEnd …

const bindEnclosingSlice …

var traceStarted …

func getTraceContext(ctx context.Context) (traceContext, bool) { … }

// StartSpan starts a trace event with the given name. The Span ends when its Done method is called.
func StartSpan(ctx context.Context, name string) (context.Context, *Span) { … }

// StartGoroutine associates the context with a new Thread ID. The Chrome trace viewer associates each
// trace event with a thread, and doesn't expect events with the same thread id to happen at the
// same time.
func StartGoroutine(ctx context.Context) context.Context { … }

// Flow marks a flow indicating that the 'to' span depends on the 'from' span.
// Flow should be called while the 'to' span is in progress.
func Flow(ctx context.Context, from *Span, to *Span) { … }

type Span …

func (s *Span) Done() { … }

type tracer …

func (t *tracer) writeEvent(ev *format.Event) error { … }

func (t *tracer) Close() error { … }

func (t *tracer) getNextTID() uint64 { … }

func (t *tracer) getNextFlowID() uint64 { … }

type traceKey …

type traceContext …

// Start starts a trace which writes to the given file.
func Start(ctx context.Context, file string) (context.Context, func() error, error) { … }

type traceFile …