1// -*- C++ -*-
 2//===----------------------------------------------------------------------===//
 3//
 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 5// See https://llvm.org/LICENSE.txt for license information.
 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 7//
 8//===----------------------------------------------------------------------===//
 9
10#ifndef _LIBCPP_STOP_TOKEN
11#define _LIBCPP_STOP_TOKEN
12
13/*
14
15namespace std {
16  // [stoptoken], class stop_token
17  class stop_token;
18
19  // [stopsource], class stop_source
20  class stop_source;
21
22  // no-shared-stop-state indicator
23  struct nostopstate_t {
24    explicit nostopstate_t() = default;
25  };
26  inline constexpr nostopstate_t nostopstate{};
27
28  // [stopcallback], class template stop_callback
29  template<class Callback>
30    class stop_callback;
31
32*/
33
34#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
35#  include <__cxx03/__config>
36#else
37#  include <__config>
38
39#  if _LIBCPP_HAS_THREADS
40
41#    if _LIBCPP_STD_VER >= 20
42#      include <__stop_token/stop_callback.h>
43#      include <__stop_token/stop_source.h>
44#      include <__stop_token/stop_token.h>
45#    endif
46
47#    include <version>
48
49#    if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
50#      pragma GCC system_header
51#    endif
52
53#  endif // _LIBCPP_HAS_THREADS
54
55#  if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
56#    include <cstddef>
57#    include <iosfwd>
58#  endif
59#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
60
61#endif // _LIBCPP_STOP_TOKEN