aboutsummaryrefslogtreecommitdiff
path: root/contrib/llvm-project/libcxx/include/__algorithm/pstl_copy.h
diff options
context:
space:
mode:
authorDimitry Andric <dim@FreeBSD.org>2023-12-18 20:30:12 +0000
committerDimitry Andric <dim@FreeBSD.org>2024-04-06 20:11:55 +0000
commit5f757f3ff9144b609b3c433dfd370cc6bdc191ad (patch)
tree1b4e980b866cd26a00af34c0a653eb640bd09caf /contrib/llvm-project/libcxx/include/__algorithm/pstl_copy.h
parent3e1c8a35f741a5d114d0ba670b15191355711fe9 (diff)
parent312c0ed19cc5276a17bacf2120097bec4515b0f1 (diff)
Diffstat (limited to 'contrib/llvm-project/libcxx/include/__algorithm/pstl_copy.h')
-rw-r--r--contrib/llvm-project/libcxx/include/__algorithm/pstl_copy.h73
1 files changed, 65 insertions, 8 deletions
diff --git a/contrib/llvm-project/libcxx/include/__algorithm/pstl_copy.h b/contrib/llvm-project/libcxx/include/__algorithm/pstl_copy.h
index 83c712c35407..19f275a0d5d9 100644
--- a/contrib/llvm-project/libcxx/include/__algorithm/pstl_copy.h
+++ b/contrib/llvm-project/libcxx/include/__algorithm/pstl_copy.h
@@ -10,15 +10,19 @@
#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/iterator_traits.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>
+#include <optional>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
@@ -30,26 +34,79 @@ _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,
- enable_if_t<is_execution_policy_v<__remove_cvref_t<_ExecutionPolicy>>, int> = 0>
+ class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>,
+ enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<_ForwardOutIterator>
+__copy(_ExecutionPolicy&& __policy,
+ _ForwardIterator&& __first,
+ _ForwardIterator&& __last,
+ _ForwardOutIterator&& __result) noexcept {
+ return std::__pstl_frontend_dispatch(
+ _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_copy, _RawPolicy),
+ [&__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 _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::transform(__policy, __first, __last, __result, __identity());
+ auto __res = std::__copy(__policy, std::move(__first), std::move(__last), std::move(__result));
+ if (!__res)
+ std::__throw_bad_alloc();
+ return *std::move(__res);
+}
+
+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>
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<_ForwardOutIterator> __copy_n(
+ _ExecutionPolicy&& __policy, _ForwardIterator&& __first, _Size&& __n, _ForwardOutIterator&& __result) noexcept {
+ return std::__pstl_frontend_dispatch(
+ _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_copy_n, _RawPolicy),
+ [&__policy](
+ _ForwardIterator __g_first, _Size __g_n, _ForwardOutIterator __g_result) -> optional<_ForwardIterator> {
+ if constexpr (__has_random_access_iterator_category_or_concept<_ForwardIterator>::value)
+ return std::__copy(__policy, std::move(__g_first), std::move(__g_first + __g_n), std::move(__g_result));
+ else
+ return std::copy_n(__g_first, __g_n, __g_result);
+ },
+ std::move(__first),
+ std::move(__n),
+ std::move(__result));
}
template <class _ExecutionPolicy,
class _ForwardIterator,
class _ForwardOutIterator,
class _Size,
- enable_if_t<is_execution_policy_v<__remove_cvref_t<_ExecutionPolicy>>, int> = 0>
+ 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) {
- if constexpr (__has_random_access_iterator_category<_ForwardIterator>::value)
- return std::copy(__policy, __first, __first + __n, __result);
- else
- return std::copy_n(__first, __n, __result);
+ auto __res = std::__copy_n(__policy, std::move(__first), std::move(__n), std::move(__result));
+ if (!__res)
+ std::__throw_bad_alloc();
+ return *std::move(__res);
}
_LIBCPP_END_NAMESPACE_STD