chromium/third_party/libc++/src/include/__thread/id.h

// -*- 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___THREAD_ID_H
#define _LIBCPP___THREAD_ID_H

#include <__compare/ordering.h>
#include <__config>
#include <__fwd/functional.h>
#include <__fwd/ostream.h>
#include <__thread/support.h>

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

_LIBCPP_BEGIN_NAMESPACE_STD

#ifndef _LIBCPP_HAS_NO_THREADS
class _LIBCPP_EXPORTED_FROM_ABI __thread_id;

namespace this_thread {

_LIBCPP_HIDE_FROM_ABI __thread_id get_id() _NOEXCEPT;

} // namespace this_thread

template <>
struct hash<__thread_id>;

class _LIBCPP_TEMPLATE_VIS __thread_id { … };

inline _LIBCPP_HIDE_FROM_ABI bool operator==(__thread_id __x, __thread_id __y) _NOEXCEPT { … }

#  if _LIBCPP_STD_VER <= 17

inline _LIBCPP_HIDE_FROM_ABI bool operator!=(__thread_id __x, __thread_id __y) _NOEXCEPT { return !(__x == __y); }

inline _LIBCPP_HIDE_FROM_ABI bool operator<(__thread_id __x, __thread_id __y) _NOEXCEPT {
  return __thread_id::__lt_impl(__x.__id_, __y.__id_);
}

inline _LIBCPP_HIDE_FROM_ABI bool operator<=(__thread_id __x, __thread_id __y) _NOEXCEPT { return !(__y < __x); }
inline _LIBCPP_HIDE_FROM_ABI bool operator>(__thread_id __x, __thread_id __y) _NOEXCEPT { return __y < __x; }
inline _LIBCPP_HIDE_FROM_ABI bool operator>=(__thread_id __x, __thread_id __y) _NOEXCEPT { return !(__x < __y); }

#  else // _LIBCPP_STD_VER <= 17

inline _LIBCPP_HIDE_FROM_ABI strong_ordering operator<=>(__thread_id __x, __thread_id __y) noexcept { … }

#  endif // _LIBCPP_STD_VER <= 17

namespace this_thread {

inline _LIBCPP_HIDE_FROM_ABI __thread_id get_id() _NOEXCEPT { … }

} // namespace this_thread

#endif // !_LIBCPP_HAS_NO_THREADS

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP___THREAD_ID_H