llvm-project/libcxx/include/stop_token

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_STOP_TOKEN
#define _LIBCPP_STOP_TOKEN

/*

namespace std {
  // [stoptoken], class stop_token
  class stop_token;

  // [stopsource], class stop_source
  class stop_source;

  // no-shared-stop-state indicator
  struct nostopstate_t {
    explicit nostopstate_t() = default;
  };
  inline constexpr nostopstate_t nostopstate{};

  // [stopcallback], class template stop_callback
  template<class Callback>
    class stop_callback;

*/

#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#  include <__cxx03/stop_token>
#else
#  include <__config>

#  if _LIBCPP_HAS_THREADS

#    if _LIBCPP_STD_VER >= 20
#      include <__stop_token/stop_callback.h>
#      include <__stop_token/stop_source.h>
#      include <__stop_token/stop_token.h>
#    endif

#    include <version>

#    if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#      pragma GCC system_header
#    endif

#  endif // _LIBCPP_HAS_THREADS

#  if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
#    include <cstddef>
#    include <iosfwd>
#  endif
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_STOP_TOKEN