func WriteHeader(w io.Writer, v Version) (int, error)
WriteHeader writes a header for a trace version v to w.
Version represents the version of a trace file.
type Version uint32
const (
Go122 Version = 22
Current = Go122
)
func ReadHeader(r io.Reader) (Version, error)
ReadHeader reads the version of the trace out of the trace file's header, whose prefix must be present in v.
func (v Version) Specs() []event.Spec
Specs returns the set of event.Specs for this version.
func (v Version) Valid() bool