3dc1f759e6
This patch removes code which is guarded by `_LIBCPP_STD_VER` and `_LIBCPP_CXX03_LANG`. This is part of https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc.
103 lines
3.4 KiB
C++
103 lines
3.4 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___CXX03___THREAD_ID_H
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#define _LIBCPP___CXX03___THREAD_ID_H
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#include <__cxx03/__config>
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#include <__cxx03/__fwd/functional.h>
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#include <__cxx03/__fwd/ostream.h>
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#include <__cxx03/__thread/support.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#ifndef _LIBCPP_HAS_NO_THREADS
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class _LIBCPP_EXPORTED_FROM_ABI __thread_id;
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namespace this_thread {
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_LIBCPP_HIDE_FROM_ABI __thread_id get_id() _NOEXCEPT;
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} // namespace this_thread
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template <>
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struct hash<__thread_id>;
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class _LIBCPP_TEMPLATE_VIS __thread_id {
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// FIXME: pthread_t is a pointer on Darwin but a long on Linux.
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// NULL is the no-thread value on Darwin. Someone needs to check
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// on other platforms. We assume 0 works everywhere for now.
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__libcpp_thread_id __id_;
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static _LIBCPP_HIDE_FROM_ABI bool
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__lt_impl(__thread_id __x, __thread_id __y) _NOEXCEPT { // id==0 is always less than any other thread_id
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if (__x.__id_ == 0)
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return __y.__id_ != 0;
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if (__y.__id_ == 0)
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return false;
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return __libcpp_thread_id_less(__x.__id_, __y.__id_);
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}
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public:
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_LIBCPP_HIDE_FROM_ABI __thread_id() _NOEXCEPT : __id_(0) {}
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_LIBCPP_HIDE_FROM_ABI void __reset() { __id_ = 0; }
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friend _LIBCPP_HIDE_FROM_ABI bool operator==(__thread_id __x, __thread_id __y) _NOEXCEPT;
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friend _LIBCPP_HIDE_FROM_ABI bool operator<(__thread_id __x, __thread_id __y) _NOEXCEPT;
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template <class _CharT, class _Traits>
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friend _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>&
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operator<<(basic_ostream<_CharT, _Traits>& __os, __thread_id __id);
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private:
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_LIBCPP_HIDE_FROM_ABI __thread_id(__libcpp_thread_id __id) : __id_(__id) {}
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_LIBCPP_HIDE_FROM_ABI friend __libcpp_thread_id __get_underlying_id(const __thread_id __id) { return __id.__id_; }
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friend __thread_id this_thread::get_id() _NOEXCEPT;
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friend class _LIBCPP_EXPORTED_FROM_ABI thread;
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friend struct _LIBCPP_TEMPLATE_VIS hash<__thread_id>;
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};
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inline _LIBCPP_HIDE_FROM_ABI bool operator==(__thread_id __x, __thread_id __y) _NOEXCEPT {
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// Don't pass id==0 to underlying routines
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if (__x.__id_ == 0)
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return __y.__id_ == 0;
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if (__y.__id_ == 0)
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return false;
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return __libcpp_thread_id_equal(__x.__id_, __y.__id_);
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}
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inline _LIBCPP_HIDE_FROM_ABI bool operator!=(__thread_id __x, __thread_id __y) _NOEXCEPT { return !(__x == __y); }
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inline _LIBCPP_HIDE_FROM_ABI bool operator<(__thread_id __x, __thread_id __y) _NOEXCEPT {
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return __thread_id::__lt_impl(__x.__id_, __y.__id_);
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}
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inline _LIBCPP_HIDE_FROM_ABI bool operator<=(__thread_id __x, __thread_id __y) _NOEXCEPT { return !(__y < __x); }
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inline _LIBCPP_HIDE_FROM_ABI bool operator>(__thread_id __x, __thread_id __y) _NOEXCEPT { return __y < __x; }
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inline _LIBCPP_HIDE_FROM_ABI bool operator>=(__thread_id __x, __thread_id __y) _NOEXCEPT { return !(__x < __y); }
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namespace this_thread {
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inline _LIBCPP_HIDE_FROM_ABI __thread_id get_id() _NOEXCEPT { return __libcpp_thread_get_current_id(); }
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} // namespace this_thread
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#endif // !_LIBCPP_HAS_NO_THREADS
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___CXX03___THREAD_ID_H
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