Function parseJavaProfile

profile/legacy_java_profile.go:68–107

parseJavaProfile returns a new profile from heapz or contentionz data. b is the profile bytes after the header.

(b []byte)

// parseJavaProfile returns a new profile from heapz or contentionz
// data. b is the profile bytes after the header.
func parseJavaProfile(b []byte) (*Profile, error) {
	h := bytes.SplitAfterN(b, []byte("\n"), 2)
	if len(h) < 2 {
		return nil, errUnrecognized
	}

	p := &Profile{
		PeriodType: &ValueType{},
	}
	header := string(bytes.TrimSpace(h[0]))

	var err error
	var pType string
	switch header {
	case "--- heapz 1 ---":
		pType = "heap"
	case "--- contentionz 1 ---":
		pType = "contention"
	default:
		return nil, errUnrecognized
	}

	if b, err = parseJavaHeader(pType, h[1], p); err != nil {
		return nil, err
	}
	var locs map[uint64]*Location
	if b, locs, err = parseJavaSamples(pType, b, p); err != nil {
		return nil, err
	}
	if err = parseJavaLocations(b, locs, p); err != nil {
		return nil, err
	}

	// Strip out addresses for better merge.
	if err = p.Aggregate(true, true, true, true, false, false); err != nil {
		return nil, err
	}

	return p, nil
}

// parseJavaHeader parses the attribute section on a java profile and
// populates a profile. Returns the remainder of the buffer after all