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79 lines
2.9 KiB
C++
79 lines
2.9 KiB
C++
//===----------------------------------------------------------------------===//
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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___ALGORITHM_PSTL_FILL_H
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#define _LIBCPP___ALGORITHM_PSTL_FILL_H
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#include <__algorithm/fill_n.h>
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#include <__algorithm/pstl_for_each.h>
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#include <__algorithm/pstl_frontend_dispatch.h>
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#include <__config>
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#include <__iterator/iterator_traits.h>
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#include <__type_traits/is_execution_policy.h>
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#include <__type_traits/remove_cvref.h>
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#include <__utility/terminate_on_exception.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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#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class>
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void __pstl_fill(); // declaration needed for the frontend dispatch below
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template <class _ExecutionPolicy,
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class _ForwardIterator,
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class _Tp,
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class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>,
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enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
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_LIBCPP_HIDE_FROM_ABI void
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fill(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) {
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std::__pstl_frontend_dispatch(
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_LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_fill),
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[&](_ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_value) {
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std::for_each(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __element) {
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__element = __g_value;
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});
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},
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std::move(__first),
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std::move(__last),
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__value);
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}
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template <class>
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void __pstl_fill_n(); // declaration needed for the frontend dispatch below
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template <class _ExecutionPolicy,
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class _ForwardIterator,
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class _SizeT,
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class _Tp,
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class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>,
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enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
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_LIBCPP_HIDE_FROM_ABI void
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fill_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _SizeT __n, const _Tp& __value) {
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std::__pstl_frontend_dispatch(
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_LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_fill_n),
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[&](_ForwardIterator __g_first, _SizeT __g_n, const _Tp& __g_value) {
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if constexpr (__has_random_access_iterator_category<_ForwardIterator>::value)
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std::fill(__policy, __g_first, __g_first + __g_n, __g_value);
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else
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std::fill_n(__g_first, __g_n, __g_value);
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},
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std::move(__first),
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__n,
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__value);
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}
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_LIBCPP_END_NAMESPACE_STD
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#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
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#endif // _LIBCPP___ALGORITHM_PSTL_FILL_H
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