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/stop_token> 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 62