text: //  Copyright (c) 2019 Mikael Simberg
  //
  //  SPDX-License-Identifier: BSL-1.0
  //  Distributed under the Boost Software License, Version 1.0. (See accompanying
  //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  
  #pragma once
  
  #include <hpx/config.hpp>
  #include <hpx/functional/function.hpp>
  
  #include <cstddef>
  #include <cstdint>
  
  namespace hpx { namespace threads { namespace detail {
  #if defined(HPX_HAVE_BACKGROUND_THREAD_COUNTERS) &&                            \
      defined(HPX_HAVE_THREAD_IDLE_RATES)
      using network_background_callback_type =
          hpx::function<bool(std::size_t, std::int64_t&, std::int64_t&)>;
  #else
      using network_background_callback_type = hpx::function<bool(std::size_t)>;
  #endif
  }}}    // namespace hpx::threads::detail
  