Function readPids

cgroup1/utils.go:85–113

readPids will read all the pids of processes or tasks in a cgroup by the provided path

(path string, subsystem Name, pType procType)

// readPids will read all the pids of processes or tasks in a cgroup by the provided path
func readPids(path string, subsystem Name, pType procType) ([]Process, error) {
	f, err := os.Open(filepath.Join(path, pType))
	if err != nil {
		return nil, err
	}
	defer f.Close()
	var (
		out []Process
		s   = bufio.NewScanner(f)
	)
	for s.Scan() {
		if t := s.Text(); t != "" {
			pid, err := strconv.Atoi(t)
			if err != nil {
				return nil, err
			}
			out = append(out, Process{
				Pid:       pid,
				Subsystem: subsystem,
				Path:      path,
			})
		}
	}
	if err := s.Err(); err != nil {
		// failed to read all pids?
		return nil, err
	}
	return out, nil
}

func hugePageSizes() ([]string, error) {
	var (