}
	// Give up
	return nil, fmt.Errorf("could not create file of the form %s%03d%s", prefix, 1, suffix)
}

var tempFiles []string
var tempFilesMu = sync.Mutex{}

// deferDeleteTempFile marks a file to be deleted by next call to Cleanup()
func deferDeleteTempFile(path string) {
	tempFilesMu.Lock()
	tempFiles = append(tempFiles, path)
	tempFilesMu.Unlock()
}

	ui.Print(fmt.Sprintf(
		"Converting %s to a profile.proto... (May take a few minutes)",
		perfPath))
	profile, err := newTempFile(os.TempDir(), "pprof_", ".pb.gz")
	if err != nil {
		return nil, err
	}
	deferDeleteTempFile(profile.Name())
	cmd := exec.Command("perf_to_profile", "-i", perfPath, "-o", profile.Name(), "-f")
	cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr
	if err := cmd.Run(); err != nil {
		profile.Close()

	return func(input io.Reader, output io.Writer, ui plugin.UI) error {
		tempFile, err := newTempFile(os.TempDir(), "pprof", "."+suffix)
		if err != nil {
			return err
		}
		deferDeleteTempFile(tempFile.Name())
		if _, err := io.Copy(tempFile, input); err != nil {
			return err
		}
		tempFile.Close()
		// Try visualizers until one is successful
		for _, v := range visualizers {