| //===----------------------------------------------------------------------===// |
| // |
| // 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___ALGORITHM_PSTL_COPY_H |
| #define _LIBCPP___ALGORITHM_PSTL_COPY_H |
| |
| #include <__algorithm/copy_n.h> |
| #include <__algorithm/pstl_backend.h> |
| #include <__algorithm/pstl_frontend_dispatch.h> |
| #include <__algorithm/pstl_transform.h> |
| #include <__config> |
| #include <__functional/identity.h> |
| #include <__iterator/concepts.h> |
| #include <__type_traits/enable_if.h> |
| #include <__type_traits/is_constant_evaluated.h> |
| #include <__type_traits/is_execution_policy.h> |
| #include <__type_traits/is_trivially_copyable.h> |
| #include <__type_traits/remove_cvref.h> |
| #include <__utility/move.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| // TODO: Use the std::copy/move shenanigans to forward to std::memmove |
| |
| template <class> |
| void __pstl_copy(); |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator, |
| class _ForwardOutIterator, |
| class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, |
| enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _ForwardOutIterator |
| copy(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _ForwardOutIterator __result) { |
| return std::__pstl_frontend_dispatch( |
| _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_copy), |
| [&__policy](_ForwardIterator __g_first, _ForwardIterator __g_last, _ForwardOutIterator __g_result) { |
| return std::transform(__policy, __g_first, __g_last, __g_result, __identity()); |
| }, |
| std::move(__first), |
| std::move(__last), |
| std::move(__result)); |
| } |
| |
| template <class> |
| void __pstl_copy_n(); |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator, |
| class _ForwardOutIterator, |
| class _Size, |
| class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, |
| enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _ForwardOutIterator |
| copy_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _Size __n, _ForwardOutIterator __result) { |
| return std::__pstl_frontend_dispatch( |
| _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_copy_n), |
| [&__policy](_ForwardIterator __g_first, _Size __g_n, _ForwardOutIterator __g_result) { |
| if constexpr (__has_random_access_iterator_category_or_concept<_ForwardIterator>::value) |
| return std::copy(__policy, __g_first, __g_first + __g_n, __g_result); |
| else |
| return std::copy_n(__g_first, __g_n, __g_result); |
| }, |
| std::move(__first), |
| __n, |
| std::move(__result)); |
| } |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 |
| |
| #endif // _LIBCPP___ALGORITHM_PSTL_COPY_H |