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Name	Size	Permission	Date
algorithm_fwd.h	66.74 KB	-rw-r--r--	2025-02-12 13:06
algorithm_impl.h	170.41 KB	-rw-r--r--	2025-02-12 13:06
execution_defs.h	3.61 KB	-rw-r--r--	2025-02-12 13:06
execution_impl.h	4.72 KB	-rw-r--r--	2025-02-12 13:06
glue_algorithm_defs.h	31.52 KB	-rw-r--r--	2025-02-12 13:06
glue_algorithm_impl.h	62.84 KB	-rw-r--r--	2025-02-12 13:06
glue_execution_defs.h	1.51 KB	-rw-r--r--	2025-02-12 13:06
glue_memory_defs.h	3.77 KB	-rw-r--r--	2025-02-12 13:06
glue_memory_impl.h	18.96 KB	-rw-r--r--	2025-02-12 13:06
glue_numeric_defs.h	6.46 KB	-rw-r--r--	2025-02-12 13:06
glue_numeric_impl.h	12.01 KB	-rw-r--r--	2025-02-12 13:06
memory_impl.h	3.95 KB	-rw-r--r--	2025-02-12 13:06
numeric_fwd.h	7.74 KB	-rw-r--r--	2025-02-12 13:06
numeric_impl.h	18.26 KB	-rw-r--r--	2025-02-12 13:06
parallel_backend.h	845 B	-rw-r--r--	2025-02-12 13:06
parallel_backend_serial.h	3.91 KB	-rw-r--r--	2025-02-12 13:06
parallel_backend_tbb.h	42.74 KB	-rw-r--r--	2025-02-12 13:06
parallel_backend_utils.h	8.9 KB	-rw-r--r--	2025-02-12 13:06
parallel_impl.h	4.01 KB	-rw-r--r--	2025-02-12 13:06
pstl_config.h	7.16 KB	-rw-r--r--	2025-02-12 13:06
unseq_backend_simd.h	28.5 KB	-rw-r--r--	2025-02-12 13:06
utils.h	4.5 KB	-rw-r--r--	2025-02-12 13:06

Rename

// -*- C++ -*-
//===-- execution_impl.h --------------------------------------------------===//
//
// 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 _PSTL_EXECUTION_IMPL_H
#define _PSTL_EXECUTION_IMPL_H

#include <iterator>
#include <type_traits>

#include "execution_defs.h"

namespace __pstl
{
namespace __internal
{

using namespace __pstl::execution;

/* predicate */

template <typename _Tp>
std::false_type __lazy_and(_Tp, std::false_type)
{
    return std::false_type{};
}

template <typename _Tp>
inline _Tp
__lazy_and(_Tp __a, std::true_type)
{
    return __a;
}

template <typename _Tp>
std::true_type __lazy_or(_Tp, std::true_type)
{
    return std::true_type{};
}

template <typename _Tp>
inline _Tp
__lazy_or(_Tp __a, std::false_type)
{
    return __a;
}

/* iterator */
template <typename _IteratorType, typename... _OtherIteratorTypes>
struct __is_random_access_iterator
{
    static constexpr bool value = __internal::__is_random_access_iterator<_IteratorType>::value &&
                                  __internal::__is_random_access_iterator<_OtherIteratorTypes...>::value;
    typedef std::integral_constant<bool, value> type;
};

template <typename _IteratorType>
struct __is_random_access_iterator<_IteratorType>
    : std::is_same<typename std::iterator_traits<_IteratorType>::iterator_category, std::random_access_iterator_tag>
{
};

/* policy */
template <typename _Policy>
struct __policy_traits
{
};

template <>
struct __policy_traits<sequenced_policy>
{
    typedef std::false_type allow_parallel;
    typedef std::false_type allow_unsequenced;
    typedef std::false_type allow_vector;
};

template <>
struct __policy_traits<unsequenced_policy>
{
    typedef std::false_type allow_parallel;
    typedef std::true_type allow_unsequenced;
    typedef std::true_type allow_vector;
};

template <>
struct __policy_traits<parallel_policy>
{
    typedef std::true_type allow_parallel;
    typedef std::false_type allow_unsequenced;
    typedef std::false_type allow_vector;
};

template <>
struct __policy_traits<parallel_unsequenced_policy>
{
    typedef std::true_type allow_parallel;
    typedef std::true_type allow_unsequenced;
    typedef std::true_type allow_vector;
};

template <typename _ExecutionPolicy>
using __collector_t =
    typename __internal::__policy_traits<typename std::decay<_ExecutionPolicy>::type>::__collector_type;

template <typename _ExecutionPolicy>
using __allow_vector =
    typename __internal::__policy_traits<typename std::decay<_ExecutionPolicy>::type>::__allow_vector;

template <typename _ExecutionPolicy>
using __allow_unsequenced =
    typename __internal::__policy_traits<typename std::decay<_ExecutionPolicy>::type>::__allow_unsequenced;

template <typename _ExecutionPolicy>
using __allow_parallel =
    typename __internal::__policy_traits<typename std::decay<_ExecutionPolicy>::type>::__allow_parallel;

template <typename _ExecutionPolicy, typename... _IteratorTypes>
auto
__is_vectorization_preferred(_ExecutionPolicy&& __exec)
    -> decltype(__internal::__lazy_and(__exec.__allow_vector(),
                                       typename __internal::__is_random_access_iterator<_IteratorTypes...>::type()))
{
    return __internal::__lazy_and(__exec.__allow_vector(),
                                  typename __internal::__is_random_access_iterator<_IteratorTypes...>::type());
}

template <typename _ExecutionPolicy, typename... _IteratorTypes>
auto
__is_parallelization_preferred(_ExecutionPolicy&& __exec)
    -> decltype(__internal::__lazy_and(__exec.__allow_parallel(),
                                       typename __internal::__is_random_access_iterator<_IteratorTypes...>::type()))
{
    return __internal::__lazy_and(__exec.__allow_parallel(),
                                  typename __internal::__is_random_access_iterator<_IteratorTypes...>::type());
}

template <typename policy, typename... _IteratorTypes>
struct __prefer_unsequenced_tag
{
    static constexpr bool value = __internal::__allow_unsequenced<policy>::value &&
                                  __internal::__is_random_access_iterator<_IteratorTypes...>::value;
    typedef std::integral_constant<bool, value> type;
};

template <typename policy, typename... _IteratorTypes>
struct __prefer_parallel_tag
{
    static constexpr bool value = __internal::__allow_parallel<policy>::value &&
                                  __internal::__is_random_access_iterator<_IteratorTypes...>::value;
    typedef std::integral_constant<bool, value> type;
};

} // namespace __internal
} // namespace __pstl

#endif /* _PSTL_EXECUTION_IMPL_H */