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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.
84 lines
3.0 KiB
C++
84 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_GENERATE_H
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#define _LIBCPP___ALGORITHM_PSTL_GENERATE_H
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#include <__algorithm/pstl_backend.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/cpp17_iterator_concepts.h>
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#include <__iterator/iterator_traits.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 <__utility/move.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_generate();
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template <class _ExecutionPolicy,
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class _ForwardIterator,
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class _Generator,
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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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generate(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Generator __gen) {
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_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator);
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std::__pstl_frontend_dispatch(
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_LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_generate, _RawPolicy),
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[&__policy](_ForwardIterator __g_first, _ForwardIterator __g_last, _Generator __g_gen) {
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std::for_each(
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__policy, std::move(__g_first), std::move(__g_last), [&](__iter_reference<_ForwardIterator> __element) {
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__element = __g_gen();
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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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std::move(__gen));
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}
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template <class>
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void __pstl_generate_n();
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template <class _ExecutionPolicy,
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class _ForwardIterator,
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class _Size,
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class _Generator,
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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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generate_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _Size __n, _Generator __gen) {
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_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator);
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std::__pstl_frontend_dispatch(
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_LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_generate_n, _RawPolicy),
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[&__policy](_ForwardIterator __g_first, _Size __g_n, _Generator __g_gen) {
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std::for_each_n(__policy, std::move(__g_first), __g_n, [&](__iter_reference<_ForwardIterator> __element) {
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__element = __g_gen();
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});
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},
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std::move(__first),
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__n,
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std::move(__gen));
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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_GENERATE_H
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