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9d63ce7c4c
Due to recent, large changes in libstdc++, the feature test macros declared in <version> got out of sync with the other headers that possibly declare them. libstdc++-v3/ChangeLog: * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory): Synchronize the definition block with... * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): ... this one here. Also define the 202202L value, rather than leaving it up to purely unique_ptr.h, so that the value is synchronized across all headers. (__gnu_debug::_Safe_iterator_base): Move into new conditional block. * include/std/memory (__cpp_lib_atomic_value_initialization): Define on freestanding under the same conditions as in atomic_base.h. * include/std/version (__cpp_lib_robust_nonmodifying_seq_ops): Also define on freestanding. (__cpp_lib_to_chars): Ditto. (__cpp_lib_gcd): Ditto. (__cpp_lib_gcd_lcm): Ditto. (__cpp_lib_raw_memory_algorithms): Ditto. (__cpp_lib_array_constexpr): Ditto. (__cpp_lib_nonmember_container_access): Ditto. (__cpp_lib_clamp): Ditto. (__cpp_lib_constexpr_char_traits): Ditto. (__cpp_lib_constexpr_string): Ditto. (__cpp_lib_sample): Ditto. (__cpp_lib_lcm): Ditto. (__cpp_lib_constexpr_iterator): Ditto. (__cpp_lib_constexpr_char_traits): Ditto. (__cpp_lib_interpolate): Ditto. (__cpp_lib_constexpr_utility): Ditto. (__cpp_lib_shift): Ditto. (__cpp_lib_ranges): Ditto. (__cpp_lib_move_iterator_concept): Ditto. (__cpp_lib_constexpr_numeric): Ditto. (__cpp_lib_constexpr_functional): Ditto. (__cpp_lib_constexpr_algorithms): Ditto. (__cpp_lib_constexpr_tuple): Ditto. (__cpp_lib_constexpr_memory): Ditto.
162 lines
4.8 KiB
C++
162 lines
4.8 KiB
C++
// <memory> -*- C++ -*-
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// Copyright (C) 2001-2023 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/*
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* Copyright (c) 1997-1999
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*/
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/** @file include/memory
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* This is a Standard C++ Library header.
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* @ingroup memory
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*/
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#ifndef _GLIBCXX_MEMORY
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#define _GLIBCXX_MEMORY 1
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#pragma GCC system_header
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/**
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* @defgroup memory Memory
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* @ingroup utilities
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*
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* Components for memory allocation, deallocation, and management.
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*/
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/**
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* @defgroup pointer_abstractions Pointer Abstractions
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* @ingroup memory
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*
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* Smart pointers, etc.
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*/
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#include <bits/memoryfwd.h>
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#if _GLIBCXX_HOSTED
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# include <bits/allocator.h>
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# include <bits/stl_tempbuf.h>
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#endif
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#include <bits/stl_construct.h>
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#include <bits/stl_uninitialized.h>
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#include <bits/stl_raw_storage_iter.h>
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#if __cplusplus >= 201103L
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# include <type_traits>
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# include <bits/align.h>
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# include <bits/uses_allocator.h>
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# include <bits/alloc_traits.h>
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# include <debug/debug.h>
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# include <bits/unique_ptr.h>
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# if _GLIBCXX_HOSTED
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# include <bits/shared_ptr.h>
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# include <bits/shared_ptr_atomic.h>
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# endif
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#endif
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#if __cplusplus < 201103L || _GLIBCXX_USE_DEPRECATED
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# include <backward/auto_ptr.h>
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#endif
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#if __cplusplus > 201703L
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# include <bits/ranges_uninitialized.h>
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# include <bits/uses_allocator_args.h>
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#endif
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/* As a hack, we declare __cpp_lib_atomic_value_initialization here even though
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we don't include the bit that actually declares it, for consistency. */
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#if !defined(__cpp_lib_atomic_value_initialization) && __cplusplus >= 202002L
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# define __cpp_lib_atomic_value_initialization 201911L
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#endif
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#if __cplusplus >= 201103L && __cplusplus <= 202002L && _GLIBCXX_HOSTED
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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/** @defgroup ptr_safety Pointer Safety and Garbage Collection
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* @ingroup memory
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*
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* Utilities to assist with garbage collection in an implementation
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* that supports <em>strict pointer safety</em>.
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* This implementation only supports <em>relaxed pointer safety</em>
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* and so these functions have no effect.
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*
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* C++11 20.6.4 [util.dynamic.safety], Pointer safety
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*
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* @{
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*/
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/// Constants representing the different types of pointer safety.
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enum class pointer_safety { relaxed, preferred, strict };
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/// Inform a garbage collector that an object is still in use.
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inline void
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declare_reachable(void*) { }
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/// Unregister an object previously registered with declare_reachable.
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template <typename _Tp>
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inline _Tp*
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undeclare_reachable(_Tp* __p) { return __p; }
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/// Inform a garbage collector that a region of memory need not be traced.
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inline void
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declare_no_pointers(char*, size_t) { }
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/// Unregister a range previously registered with declare_no_pointers.
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inline void
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undeclare_no_pointers(char*, size_t) { }
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/// The type of pointer safety supported by the implementation.
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inline pointer_safety
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get_pointer_safety() noexcept { return pointer_safety::relaxed; }
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/// @}
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace
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#endif // C++11 to C++20
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#if __cplusplus >= 201703L && _GLIBCXX_HOSTED
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// Parallel STL algorithms
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# if _PSTL_EXECUTION_POLICIES_DEFINED
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// If <execution> has already been included, pull in implementations
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# include <pstl/glue_memory_impl.h>
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# else
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// Otherwise just pull in forward declarations
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# include <pstl/glue_memory_defs.h>
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# endif
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// Feature test macro for parallel algorithms
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# define __cpp_lib_parallel_algorithm 201603L
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#endif // C++17
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#endif /* _GLIBCXX_MEMORY */
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