04b45450ac
The _LIBCPP_PSTL_CUSTOMIZATION_POINT macro was assuming that the policy was called _RawPolicy and referencing it by name. It happened to always work but this was definitely accidental and an oversight in the original implementation. This patch fixes that by passing the policy to the macro explicitly. Noticed while reviewing #66968.
77 lines
3.0 KiB
C++
77 lines
3.0 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_FOR_EACH_H
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#define _LIBCPP___ALGORITHM_PSTL_FOR_EACH_H
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#include <__algorithm/for_each.h>
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#include <__algorithm/for_each_n.h>
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#include <__algorithm/pstl_backend.h>
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#include <__algorithm/pstl_frontend_dispatch.h>
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#include <__config>
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#include <__iterator/concepts.h>
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#include <__iterator/cpp17_iterator_concepts.h>
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#include <__type_traits/enable_if.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 <__type_traits/void_t.h>
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#include <__utility/move.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 _ExecutionPolicy,
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class _ForwardIterator,
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class _Function,
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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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for_each(_ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Function __func) {
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_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator);
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using _Backend = typename __select_backend<_RawPolicy>::type;
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std::__pstl_for_each<_RawPolicy>(_Backend{}, std::move(__first), std::move(__last), std::move(__func));
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}
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template <class>
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void __pstl_for_each_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 _Size,
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class _Function,
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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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for_each_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _Size __size, _Function __func) {
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_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator);
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return std::__pstl_frontend_dispatch(
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_LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_for_each_n, _RawPolicy),
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[&](_ForwardIterator __g_first, _Size __g_size, _Function __g_func) {
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if constexpr (__has_random_access_iterator_category_or_concept<_ForwardIterator>::value) {
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std::for_each(__policy, std::move(__g_first), __g_first + __g_size, std::move(__g_func));
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} else {
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std::for_each_n(std::move(__g_first), __g_size, std::move(__g_func));
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}
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},
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__first,
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__size,
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std::move(__func));
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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_FOR_EACH_H
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