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hipstdpar_lib.hpp
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hipstdpar_lib.hpp
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// MIT License
//
// Copyright (c) 2023 Advanced Micro Devices, Inc. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#pragma once
#if defined(__HIPSTDPAR__)
#warning Using HIPSTDPAR Acceleration (temporary debug message)
#include <thrust/adjacent_difference.h>
#include <thrust/copy.h>
#include <thrust/count.h>
#include <thrust/equal.h>
#include <thrust/execution_policy.h>
#include <thrust/extrema.h>
#include <thrust/fill.h>
#include <thrust/find.h>
#include <thrust/for_each.h>
#include <thrust/generate.h>
#include <thrust/inner_product.h>
#include <thrust/iterator/discard_iterator.h>
#include <thrust/logical.h>
#include <thrust/merge.h>
#include <thrust/mismatch.h>
#include <thrust/partition.h>
#include <thrust/reduce.h>
#include <thrust/remove.h>
#include <thrust/replace.h>
#include <thrust/reverse.h>
#include <thrust/scan.h>
#include <thrust/set_operations.h>
#include <thrust/sort.h>
#include <thrust/swap.h>
#include <thrust/transform.h>
#include <thrust/transform_reduce.h>
#include <thrust/transform_scan.h>
#include <thrust/uninitialized_copy.h>
#include <thrust/uninitialized_fill.h>
#include <thrust/unique.h>
#include <cstddef>
#include <cstdint>
#include <execution>
#include <functional>
#include <iterator>
#include <type_traits>
#if defined(__HIPSTDPAR_INTERPOSE_ALLOC__)
#include <hip/hip_runtime.h>
#include <memory>
#include <memory_resource>
#include <stdexcept>
#include <utility>
namespace hipstd
{
struct Header {
void* alloc_ptr;
std::size_t size;
std::size_t align;
};
inline std::pmr::synchronized_pool_resource heap{
std::pmr::pool_options{0u, 15u * 1024u},
[]() {
static class final : public std::pmr::memory_resource {
// TODO: add exception handling
void* do_allocate(std::size_t n, std::size_t a) override
{
void* r{};
hipMallocManaged(&r, n);
return r;
}
void do_deallocate(
void* p, std::size_t, std::size_t) override
{
hipFree(p);
}
bool do_is_equal(
const std::pmr::memory_resource& x)
const noexcept override
{
return dynamic_cast<const decltype(this)>(&x);
}
} r;
return &r;
}()};
} // Namespace hipstd.
extern "C"
inline
__attribute__((used))
void* __hipstdpar_aligned_alloc(std::size_t a, std::size_t n)
{ // TODO: tidy up, revert to using std.
auto m = n + sizeof(hipstd::Header) + a - 1;
auto r = hipstd::heap.allocate(m, a);
if (!r) return r;
const auto h = static_cast<hipstd::Header*>(r) + 1;
const auto p = (reinterpret_cast<std::uintptr_t>(h) + a - 1) & -a;
reinterpret_cast<hipstd::Header*>(p)[-1] = {r, m, a};
return reinterpret_cast<void*>(p);
}
extern "C"
inline
__attribute__((used))
void* __hipstdpar_malloc(std::size_t n)
{
constexpr auto a = alignof(std::max_align_t);
return __hipstdpar_aligned_alloc(a, n);
}
extern "C"
inline
__attribute__((used))
void* __hipstdpar_calloc(std::size_t n, std::size_t sz)
{
return std::memset(__hipstdpar_malloc(n * sz), 0, n * sz);
}
extern "C"
inline
__attribute__((used))
int __hipstdpar_posix_aligned_alloc(
void** p, std::size_t a, std::size_t n)
{ // TODO: check invariants on alignment
if (!p || n == 0) return 0;
*p = __hipstdpar_aligned_alloc(a, n);
return 1;
}
extern "C" __attribute__((weak)) void __hipstdpar_hidden_free(void*);
extern "C"
inline
__attribute__((used))
void* __hipstdpar_realloc(void* p, std::size_t n)
{
auto q = std::memcpy(__hipstdpar_malloc(n), p, n);
auto h = static_cast<hipstd::Header*>(p) - 1;
hipPointerAttribute_t tmp{};
auto r = hipPointerGetAttributes(&tmp, h);
if (!tmp.isManaged) __hipstdpar_hidden_free(p);
else hipstd::heap.deallocate(h->alloc_ptr, h->size, h->align);
return q;
}
extern "C"
inline
__attribute__((used))
void* __hipstdpar_realloc_array(void* p, std::size_t n, std::size_t sz)
{ // TODO: handle overflow in n * sz gracefully, as per spec.
return __hipstdpar_realloc(p, n * sz);
}
extern "C"
inline
__attribute__((used))
void __hipstdpar_free(void* p)
{
auto h = static_cast<hipstd::Header*>(p) - 1;
hipPointerAttribute_t tmp{};
auto r = hipPointerGetAttributes(&tmp, h);
if (!tmp.isManaged) return __hipstdpar_hidden_free(p);
return hipstd::heap.deallocate(h->alloc_ptr, h->size, h->align);
}
extern "C"
inline
__attribute__((used))
void* __hipstdpar_operator_new_aligned(std::size_t n, std::size_t a)
{
if (auto p = __hipstdpar_aligned_alloc(a, n)) return p;
throw std::runtime_error{"Failed __hipstdpar_operator_new_aligned"};
}
extern "C"
inline
__attribute__((used))
void* __hipstdpar_operator_new(std::size_t n)
{ // TODO: consider adding the special handling for operator new
return
__hipstdpar_operator_new_aligned(n, alignof(std::max_align_t));
}
extern "C"
inline
__attribute__((used))
void* __hipstdpar_operator_new_nothrow(
std::size_t n, std::nothrow_t) noexcept
{
try {
return __hipstdpar_operator_new(n);
}
catch (...) {
// TODO: handle the potential exception
}
}
extern "C"
inline
__attribute__((used))
void* __hipstdpar_operator_new_aligned_nothrow(
std::size_t n, std::size_t a, std::nothrow_t) noexcept
{ // TODO: consider adding the special handling for operator new
try {
return __hipstdpar_operator_new_aligned(n, a);
}
catch (...) {
// TODO: handle the potential exception.
}
}
extern "C"
inline
__attribute__((used))
void __hipstdpar_operator_delete_aligned_sized(
void* p, std::size_t n, std::size_t a) noexcept
{
hipPointerAttribute_t tmp{};
auto r = hipPointerGetAttributes(&tmp, p);
if (!tmp.isManaged) return __hipstdpar_hidden_free(p);
return hipstd::heap.deallocate(p, n, a);
}
extern "C"
inline
__attribute__((used))
void __hipstdpar_operator_delete(void* p) noexcept
{
return __hipstdpar_free(p);
}
extern "C"
inline
__attribute__((used))
void __hipstdpar_operator_delete_aligned(void* p, std::size_t) noexcept
{ // TODO: use alignment
return __hipstdpar_free(p);
}
extern "C"
inline
__attribute__((used))
void __hipstdpar_operator_delete_sized(void* p, std::size_t n) noexcept
{
return __hipstdpar_operator_delete_aligned_sized(
p, n, alignof(std::max_align_t));
}
#endif
namespace hipstd
{
template<typename... Cs>
inline
constexpr
bool is_offloadable_callable() noexcept
{
return std::conjunction_v<
std::negation<std::is_pointer<Cs>>...,
std::negation<std::is_member_function_pointer<Cs>>...>;
}
template<typename I, typename = void>
struct Is_offloadable_iterator : std::false_type {};
template<typename I>
struct Is_offloadable_iterator<
I,
std::void_t<
decltype(std::declval<I>() < std::declval<I>()),
decltype(std::declval<I&>() += std::declval<std::ptrdiff_t>()),
decltype(std::declval<I>() + std::declval<std::ptrdiff_t>()),
decltype(std::declval<I>()[std::declval<std::ptrdiff_t>()]),
decltype(*std::declval<I>())>> : std::true_type
{};
template<typename... Is>
inline
constexpr
bool is_offloadable_iterator() noexcept
{
#if defined(__cpp_lib_concepts)
return (... && std::random_access_iterator<Is>);
#else
return std::conjunction_v<Is_offloadable_iterator<Is>...>;
#endif
}
template<typename... Cs>
inline
constexpr
__attribute__((diagnose_if(
true,
"HIP Standard Parallelism does not support passing pointers to "
"function as callable arguments, execution will not be "
"offloaded.",
"warning")))
void unsupported_callable_type() noexcept
{}
template<typename... Is>
inline
constexpr
__attribute__((diagnose_if(
true,
"HIP Standard Parallelism requires random access iterators, "
"execution will not be offloaded.",
"warning")))
void unsupported_iterator_category() noexcept
{}
}
namespace std
{
// BEGIN ADJACENT_DIFFERENCE
// https://en.cppreference.com/w/cpp/algorithm/adjacent_difference
template<
typename I,
typename O,
enable_if_t<::hipstd::is_offloadable_iterator<I, O>()>* = nullptr>
inline
O adjacent_difference(
execution::parallel_unsequenced_policy, I fi, I li, O fo)
{
return ::thrust::adjacent_difference(::thrust::device, fi, li, fo);
}
template<
typename I,
typename O,
enable_if_t<!::hipstd::is_offloadable_iterator<I, O>()>* = nullptr>
inline
O adjacent_difference(
execution::parallel_unsequenced_policy, I fi, I li, O fo)
{
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category,
typename iterator_traits<O>::iterator_category>();
return
::std::adjacent_difference(::std::execution::par, fi, li, fo);
}
template<
typename I,
typename O,
typename Op,
enable_if_t<
::hipstd::is_offloadable_iterator<I, O>() &&
::hipstd::is_offloadable_callable<Op>()>* = nullptr>
inline
O adjacent_difference(
execution::parallel_unsequenced_policy, I fi, I li, O fo, Op op)
{
return ::thrust::adjacent_difference(
::thrust::device, fi, li, fo, ::std::move(op));
}
template<
typename I,
typename O,
typename Op,
enable_if_t<
!::hipstd::is_offloadable_iterator<I, O>() ||
!::hipstd::is_offloadable_callable<Op>()>* = nullptr>
inline
O adjacent_difference(
execution::parallel_unsequenced_policy, I fi, I li, O fo, Op op)
{
if constexpr (!::hipstd::is_offloadable_iterator<I, O>()) {
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category,
typename iterator_traits<O>::iterator_category>();
}
if constexpr (!::hipstd::is_offloadable_callable<Op>()) {
::hipstd::unsupported_callable_type<Op>();
}
return ::std::adjacent_difference(
::std::execution::par, fi, li, fo, ::std::move(op));
}
// END ADJACENT_DIFFERENCE
// BEGIN ADJACENT_FIND
// https://en.cppreference.com/w/cpp/algorithm/adjacent_find
template<
typename I,
enable_if_t<::hipstd::is_offloadable_iterator<I>()>* = nullptr>
inline
I adjacent_find(execution::parallel_unsequenced_policy, I f, I l)
{
if (f == l) return l;
const auto r = ::thrust::mismatch(
::thrust::device, f + 1, l, f, not_equal_to<>{});
return (r.first == l) ? l : r.second;
}
template<
typename I,
typename P,
enable_if_t<!::hipstd::is_offloadable_iterator<I>()>* = nullptr>
inline
I adjacent_find(execution::parallel_unsequenced_policy, I f, I l)
{
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category>();
return ::std::adjacent_find(::std::execution::par, f, l);
}
template<
typename I,
typename P,
enable_if_t<
::hipstd::is_offloadable_iterator<I>() &&
::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
I adjacent_find(execution::parallel_unsequenced_policy, I f, I l, P p)
{
if (f == l) return l;
const auto r = ::thrust::mismatch(
::thrust::device, f + 1, l, f, not_fn(::std::move(p)));
return (r.first == l) ? l : r.second;
}
template<
typename I,
typename P,
enable_if_t<
!::hipstd::is_offloadable_iterator<I>() ||
!::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
I adjacent_find(execution::parallel_unsequenced_policy, I f, I l, P p)
{
if constexpr (!::hipstd::is_offloadable_iterator<I>()) {
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category>();
}
if constexpr (!::hipstd::is_offloadable_callable<P>()) {
::hipstd::unsupported_callable_type<P>();
}
return ::std::adjacent_find(
::std::execution::par, f, l, ::std::move(p));
}
// END ADJACENT_FIND
// BEGIN ALL_OF
// https://en.cppreference.com/w/cpp/algorithm/all_any_none_of
template<
typename I,
typename P,
enable_if_t<
::hipstd::is_offloadable_iterator<I>() &&
::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
bool all_of(execution::parallel_unsequenced_policy, I f, I l, P p)
{
return ::thrust::all_of(::thrust::device, f, l, ::std::move(p));
}
template<
typename I,
typename P,
enable_if_t<
!::hipstd::is_offloadable_iterator<I>() ||
!::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
bool all_of(execution::parallel_unsequenced_policy, I f, I l, P p)
{
if constexpr (!::hipstd::is_offloadable_iterator<I>()) {
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category>();
}
if constexpr (!::hipstd::is_offloadable_callable<P>()) {
::hipstd::unsupported_callable_type<P>();
}
return ::std::all_of(::std::execution::par, f, l, ::std::move(p));
}
// END ALL_OF
// BEGIN ANY_OF
// https://en.cppreference.com/w/cpp/algorithm/all_any_none_of
template<
typename I,
typename P,
enable_if_t<
::hipstd::is_offloadable_iterator<I>() &&
::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
bool any_of(execution::parallel_unsequenced_policy, I f, I l, P p)
{
return ::thrust::any_of(::thrust::device, f, l, ::std::move(p));
}
template<
typename I,
typename P,
enable_if_t<
!::hipstd::is_offloadable_iterator<I>() ||
!::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
bool any_of(execution::parallel_unsequenced_policy, I f, I l, P p)
{
if constexpr (!::hipstd::is_offloadable_iterator<I>()) {
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category>();
}
if constexpr (!::hipstd::is_offloadable_callable<P>()) {
::hipstd::unsupported_callable_type<P>();
}
return ::std::any_of(::std::execution::par, f, l, ::std::move(p));
}
// END ANY_OF
// BEGIN COPY
// https://en.cppreference.com/w/cpp/algorithm/copy
template<
typename I,
typename O,
enable_if_t<::hipstd::is_offloadable_iterator<I, O>()>* = nullptr>
inline
O copy(execution::parallel_unsequenced_policy, I fi, I li, O fo)
{
return ::thrust::copy(::thrust::device, fi, li, fo);
}
template<
typename I,
typename O,
enable_if_t<!::hipstd::is_offloadable_iterator<I, O>()>* = nullptr>
inline
O copy(execution::parallel_unsequenced_policy, I fi, I li, O fo)
{
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category,
typename iterator_traits<O>::iterator_category>();
return ::std::copy(::std::execution::par, fi, li, fo);
}
// END COPY
// BEGIN COPY_IF
// https://en.cppreference.com/w/cpp/algorithm/copy
template<
typename I,
typename O,
typename P,
enable_if_t<
::hipstd::is_offloadable_iterator<I, O>() &&
::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
O copy_if(execution::parallel_unsequenced_policy, I fi, I li, O fo, P p)
{
return
::thrust::copy_if(::thrust::device, fi, li, fo, ::std::move(p));
}
template<
typename I,
typename O,
typename P,
enable_if_t<
!::hipstd::is_offloadable_iterator<I, O>() ||
!::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
O copy_if(execution::parallel_unsequenced_policy, I fi, I li, O fo, P p)
{
if constexpr (!::hipstd::is_offloadable_iterator<I, O>()) {
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category,
typename iterator_traits<O>::iterator_category>();
}
if constexpr (!::hipstd::is_offloadable_callable<P>()) {
::hipstd::unsupported_callable_type<P>();
}
return ::std::copy_if(
::std::execution::par, fi, li, fo, ::std::move(p));
}
// END COPY_IF
// BEGIN COPY_N
// https://en.cppreference.com/w/cpp/algorithm/copy_n
template<
typename I,
typename N,
typename O,
enable_if_t<::hipstd::is_offloadable_iterator<I, O>()>* = nullptr>
inline
O copy_n(execution::parallel_unsequenced_policy, I fi, N n, O fo)
{
return ::thrust::copy_n(::thrust::device, fi, n, fo);
}
template<
typename I,
typename N,
typename O,
enable_if_t<!::hipstd::is_offloadable_iterator<I, O>()>* = nullptr>
inline
O copy_n(execution::parallel_unsequenced_policy, I fi, N n, O fo)
{
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category,
typename iterator_traits<O>::iterator_category>();
return ::std::copy_n(::std::execution::par, fi, n, fo);
}
// END COPY_N
// BEGIN COUNT
// https://en.cppreference.com/w/cpp/algorithm/count
template<
typename I,
typename T,
enable_if_t<::hipstd::is_offloadable_iterator<I>()>* = nullptr>
inline
typename iterator_traits<I>::difference_type count(
execution::parallel_unsequenced_policy, I f, I l, const T& x)
{
return ::thrust::count(::thrust::device, f, l, x);
}
template<
typename I,
typename T,
enable_if_t<!::hipstd::is_offloadable_iterator<I>()>* = nullptr>
inline
typename iterator_traits<I>::difference_type count(
execution::parallel_unsequenced_policy, I f, I l, const T& x)
{
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category>();
return ::std::count(::std::execution::par, f, l, x);
}
// END COUNT
// BEGIN COUNT_IF
// https://en.cppreference.com/w/cpp/algorithm/count
template<
typename I,
typename P,
enable_if_t<
::hipstd::is_offloadable_iterator<I>() &&
::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
typename iterator_traits<I>::difference_type count_if(
execution::parallel_unsequenced_policy, I f, I l, P p)
{
return ::thrust::count_if(::thrust::device, f, l, ::std::move(p));
}
template<
typename I,
typename O,
typename P,
enable_if_t<
!::hipstd::is_offloadable_iterator<I>() ||
!::hipstd::is_offloadable_callable<P>()>* = nullptr>
inline
typename iterator_traits<I>::difference_type count_if(
execution::parallel_unsequenced_policy, I f, I l, P p)
{
if constexpr (!::hipstd::is_offloadable_iterator<I>()) {
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category>();
}
if constexpr (!::hipstd::is_offloadable_callable<P>()) {
::hipstd::unsupported_callable_type<P>();
}
return ::std::count_if(::std::execution::par, f, l, ::std::move(p));
}
// END COUNT_IF
// BEGIN DESTROY
// https://en.cppreference.com/w/cpp/memory/destroy
template<
typename I,
enable_if_t<::hipstd::is_offloadable_iterator<I>()>* = nullptr>
inline
void destroy(execution::parallel_unsequenced_policy, I f, I l)
{
return ::thrust::for_each(f, l, [](auto& x) {
destroy_at(addressof(x));
});
}
template<
typename I,
enable_if_t<!::hipstd::is_offloadable_iterator<I>()>* = nullptr>
inline
void destroy(execution::parallel_unsequenced_policy, I f, I l)
{
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category>();
return ::std::destroy(::std::execution::par, f, l);
}
// END DESTROY
// BEGIN DESTROY_N
// https://en.cppreference.com/w/cpp/memory/destroy_n
template<
typename I,
typename N,
enable_if_t<::hipstd::is_offloadable_iterator<I>()>* = nullptr>
inline
void destroy_n(execution::parallel_unsequenced_policy, I f, N n)
{
return ::thrust::for_each_n(f, n, [](auto& x) {
destroy_at(addressof(x));
});
}
template<
typename I,
typename N,
enable_if_t<!::hipstd::is_offloadable_iterator<I>()>* = nullptr>
inline
void destroy_n(execution::parallel_unsequenced_policy, I f, N n)
{
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category>();
return ::std::destroy_n(::std::execution::par, f, n);
}
// END DESTROY_N
// BEGIN EQUAL
// https://en.cppreference.com/w/cpp/algorithm/equal
template<
typename I0,
typename I1,
enable_if_t<::hipstd::is_offloadable_iterator<I0, I1>()>* = nullptr>
inline
bool equal(execution::parallel_unsequenced_policy, I0 f0, I0 l0, I1 f1)
{
return ::thrust::equal(::thrust::device, f0, l0, f1);
}
template<
typename I0,
typename I1,
enable_if_t<
!::hipstd::is_offloadable_iterator<I0, I1>()>* = nullptr>
inline
bool equal(execution::parallel_unsequenced_policy, I0 f0, I0 l0, I1 f1)
{
::hipstd::unsupported_iterator_category<
typename iterator_traits<I0>::iterator_category,
typename iterator_traits<I1>::iterator_category>();
return ::std::equal(::std::execution::par, f0, l0, f1);
}
template<
typename I0,
typename I1,
typename R,
enable_if_t<
::hipstd::is_offloadable_iterator<I0, I1>() &&
::hipstd::is_offloadable_callable<R>()>* = nullptr>
inline
bool equal(
execution::parallel_unsequenced_policy, I0 f0, I0 l0, I1 f1, R r)
{
return
::thrust::equal(::thrust::device, f0, l0, f1, ::std::move(r));
}
template<
typename I0,
typename I1,
typename R,
enable_if_t<
!::hipstd::is_offloadable_iterator<I0, I1>() ||
!::hipstd::is_offloadable_callable<R>()>* = nullptr>
inline
bool equal(
execution::parallel_unsequenced_policy, I0 f0, I0 l0, I1 f1, R r)
{
if constexpr (!::hipstd::is_offloadable_iterator<I0, I1>()) {
::hipstd::unsupported_iterator_category<
typename iterator_traits<I0>::iterator_category,
typename iterator_traits<I1>::iterator_category>();
}
if constexpr (!::hipstd::is_offloadable_callable<R>()) {
::hipstd::unsupported_callable_type<R>();
}
return
::std::equal(::std::execution::par, f0, l0, f1, ::std::move(r));
}
template<
typename I0,
typename I1,
enable_if_t<::hipstd::is_offloadable_iterator<I0, I1>()>* = nullptr>
inline
bool equal(
execution::parallel_unsequenced_policy, I0 f0, I0 l0, I1 f1, I1 l1)
{
if (l0 - f0 != l1 - f1) return false;
return ::thrust::equal(::thrust::device, f0, l0, f1);
}
template<
typename I0,
typename I1,
enable_if_t<
!::hipstd::is_offloadable_iterator<I0, I1>()>* = nullptr>
inline
bool equal(
execution::parallel_unsequenced_policy, I0 f0, I0 l0, I1 f1, I1 l1)
{
::hipstd::unsupported_iterator_category<
typename iterator_traits<I0>::iterator_category,
typename iterator_traits<I1>::iterator_category>();
return ::std::equal(::std::execution::par, f0, l0, f1, l1);
}
template<
typename I0,
typename I1,
typename R,
enable_if_t<
::hipstd::is_offloadable_iterator<I0, I1>() &&
::hipstd::is_offloadable_callable<R>()>* = nullptr>
inline
bool equal(
execution::parallel_unsequenced_policy,
I0 f0,
I0 l0,
I1 f1,
I1 l1,
R r)
{
if (l0 - f0 != l1 - f1) return false;
return ::thrust::equal(
::thrust::device, f0, l0, f1, ::std::move(r));
}
template<
typename I0,
typename I1,
typename R,
enable_if_t<
!::hipstd::is_offloadable_iterator<I0, I1>() ||
!::hipstd::is_offloadable_callable<R>()>* = nullptr>
inline
bool equal(
execution::parallel_unsequenced_policy,
I0 f0,
I0 l0,
I1 f1,
I1 l1,
R r)
{
if constexpr (!::hipstd::is_offloadable_iterator<I0, I1>()) {
::hipstd::unsupported_iterator_category<
typename iterator_traits<I0>::iterator_category,
typename iterator_traits<I1>::iterator_category>();
}
if constexpr (!::hipstd::is_offloadable_callable<R>()) {
::hipstd::unsupported_callable_type<R>();
}
return ::std::equal(
::std::execution::par, f0, l0, f1, l1, ::std::move(r));
}
// END EQUAL
// BEGIN EXCLUSIVE_SCAN
// https://en.cppreference.com/w/cpp/algorithm/exclusive_scan
template<
typename I,
typename O,
typename T,
enable_if_t<::hipstd::is_offloadable_iterator<I, O>()>* = nullptr>
inline
O exclusive_scan(
execution::parallel_unsequenced_policy, I fi, I li, O fo, T x)
{
return ::thrust::exclusive_scan(
::thrust::device, fi, li, fo, ::std::move(x));
}
template<
typename I,
typename O,
typename T,
enable_if_t<!::hipstd::is_offloadable_iterator<I, O>()>* = nullptr>
inline
O exclusive_scan(
execution::parallel_unsequenced_policy, I fi, I li, O fo, T x)
{
::hipstd::unsupported_iterator_category<
typename std::iterator_traits<I>::iterator_category,
typename std::iterator_traits<O>::iterator_category>();
return ::std::exclusive_scan(
::std::execution::par, fi, li, fo, ::std::move(x));
}
template<
typename I,
typename O,
typename T,
typename Op,
enable_if_t<
::hipstd::is_offloadable_iterator<I, O>() &&
::hipstd::is_offloadable_callable<Op>()>* = nullptr>
inline
O exclusive_scan(
execution::parallel_unsequenced_policy,
I fi,
I li,
O fo,
T x,
Op op)
{
return ::thrust::exclusive_scan(
::thrust::device, fi, li, fo, ::std::move(x), ::std::move(op));
}
template<
typename I,
typename O,
typename T,
typename Op,
enable_if_t<
!::hipstd::is_offloadable_iterator<I, O>() ||
!::hipstd::is_offloadable_callable<Op>()>* = nullptr>
inline
O exclusive_scan(
execution::parallel_unsequenced_policy,
I fi,
I li,
O fo,
T x,
Op op)
{
if constexpr (!::hipstd::is_offloadable_iterator<I, O>()) {
::hipstd::unsupported_iterator_category<
typename iterator_traits<I>::iterator_category,
typename iterator_traits<O>::iterator_category>();
}
if constexpr (!::hipstd::is_offloadable_callable<Op>()) {
::hipstd::unsupported_callable_type<Op>();