Function stat

src/linux/cgroups.cpp:1744–1778

Try<hashmap<string, uint64_t>> stat(
    const string& hierarchy,
    const string& cgroup,
    const string& file)
{
  Try<string> contents = cgroups::read(hierarchy, cgroup, file);

  if (contents.isError()) {
    return Error(contents.error());
  }

  hashmap<string, uint64_t> result;

  foreach (const string& line, strings::split(contents.get(), "\n")) {
    // Skip empty lines.
    if (strings::trim(line).empty()) {
      continue;
    }

    string name;
    uint64_t value;

    // Expected line format: "%s %llu".
    istringstream stream(line);
    stream >> name >> value;

    if (stream.fail()) {
      return Error("Unexpected line format in " + file + ": " + line);
    }

    result[name] = value;
  }

  return result;
}


namespace internal {