1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___ALGORITHM_PSTL_STABLE_SORT_H 10 #define _LIBCPP___ALGORITHM_PSTL_STABLE_SORT_H 11 12 #include <__algorithm/pstl_backend.h> 13 #include <__config> 14 #include <__functional/operations.h> 15 #include <__type_traits/enable_if.h> 16 #include <__type_traits/is_execution_policy.h> 17 #include <__type_traits/remove_cvref.h> 18 #include <__utility/empty.h> 19 #include <__utility/move.h> 20 #include <optional> 21 22 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 23 # pragma GCC system_header 24 #endif 25 26 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 27 28 _LIBCPP_BEGIN_NAMESPACE_STD 29 30 template <class _ExecutionPolicy, 31 class _RandomAccessIterator, 32 class _Comp = less<>, 33 class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, 34 enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> 35 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<__empty> __stable_sort( 36 _ExecutionPolicy&&, _RandomAccessIterator&& __first, _RandomAccessIterator&& __last, _Comp&& __comp = {}) noexcept { 37 using _Backend = typename __select_backend<_RawPolicy>::type; 38 return std::__pstl_stable_sort<_RawPolicy>(_Backend{}, std::move(__first), std::move(__last), std::move(__comp)); 39 } 40 41 template <class _ExecutionPolicy, 42 class _RandomAccessIterator, 43 class _Comp = less<>, 44 class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, 45 enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> 46 _LIBCPP_HIDE_FROM_ABI void stable_sort( 47 _ExecutionPolicy&& __policy, _RandomAccessIterator __first, _RandomAccessIterator __last, _Comp __comp = {}) { 48 if (!std::__stable_sort(__policy, std::move(__first), std::move(__last), std::move(__comp))) 49 std::__throw_bad_alloc(); 50 } 51 52 _LIBCPP_END_NAMESPACE_STD 53 54 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 55 56 #endif // _LIBCPP___ALGORITHM_PSTL_STABLE_SORT_H 57