Method count

include/proxy/http/HttpSessionManager.h:72–76

  void        removeSession(PoolableSession *ssn);
  void        addSession(PoolableSession *ssn);
  int
  count() const
  {
    return m_ip_pool.count();
  }

private:
  using IPTable   = swoc::IntrusiveHashMap<PoolableSession::IPLinkage>;