Class Destructo

src/test/common/test_ceph_timer.cc:73–100

}

struct Destructo {
  bool armed = true;
  std::promise<void> p;

  Destructo(std::promise<void>&& p) : p(std::move(p)) {}
  Destructo(const Destructo&) = delete;
  Destructo& operator =(const Destructo&) = delete;
  Destructo(Destructo&& rhs) {
    p = std::move(rhs.p);
    armed = rhs.armed;
    rhs.armed = false;
  }
  Destructo& operator =(Destructo& rhs) {
    p = std::move(rhs.p);
    rhs.armed = false;
    armed = rhs.armed;
    rhs.armed = false;
    return *this;
  }

  ~Destructo() {
    if (armed)
      p.set_value();
  }
  void operator ()() const {
    FAIL();
  }
};

template<typename TC>
void cancel_all()