Function destroy

src/linux/cgroups.cpp:1624–1653

Future<Nothing> destroy(const string& hierarchy, const string& cgroup)
{
  // Construct the vector of cgroups to destroy.
  Try<vector<string>> cgroups = cgroups::get(hierarchy, cgroup);
  if (cgroups.isError()) {
    return Failure(
        "Failed to get nested cgroups: " + cgroups.error());
  }

  vector<string> candidates = cgroups.get();
  if (cgroup != "/") {
    candidates.push_back(cgroup);
  }

  if (candidates.empty()) {
    return Nothing();
  }

  // If the freezer subsystem is available, destroy the cgroups.
  if (cgroups::exists(hierarchy, cgroup, "freezer.state")) {
    internal::Destroyer* destroyer =
      new internal::Destroyer(hierarchy, candidates);
    Future<Nothing> future = destroyer->future();
    spawn(destroyer, true);
    return future;
  }

  // Attempt to remove the cgroups in a bottom-up fashion.
  return internal::remove(hierarchy, candidates);
}


static void __destroy(