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/*
* Copyright 2008-2013 NVIDIA Corporation
* Modifications Copyright© 2021 Advanced Micro Devices, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <thrust/sequence.h>
#include <thrust/allocate_unique.h>
#include <thrust/universal_vector.h>
#include <thrust/type_traits/is_contiguous_iterator.h>
#include "test_header.hpp"
#include <numeric>
#include <vector>
TESTS_DEFINE(UniversalTests, NumericalTestsParams);
// The managed_memory_pointer class should be identified as a
// contiguous_iterator
THRUST_STATIC_ASSERT(
thrust::is_contiguous_iterator<thrust::universal_allocator<int>::pointer>::value);
template <typename T>
struct some_object {
some_object(T data)
: m_data(data)
{}
void setter(T data) { m_data = data; }
T getter() const { return m_data; }
private:
T m_data;
};
TYPED_TEST(UniversalTests, TestUniversalAllocateUnique)
{
using T = typename TestFixture::input_type;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
// Simple test to ensure that pointers created with universal_memory_resource
// can be dereferenced and used with STL code. This is necessary as some
// STL implementations break when using fancy references that overload
// operator&, so universal_memory_resource uses a special pointer type that
// returns regular C++ references that can be safely used host-side.
// These operations fail to compile with fancy references:
auto raw = thrust::allocate_unique<T>(thrust::universal_allocator<T>{}, 42);
auto obj = thrust::allocate_unique<some_object<T>>(
thrust::universal_allocator<some_object<T> >{}, 42
);
static_assert(
std::is_same<decltype(raw.get()),
thrust::universal_ptr<T> >::value,
"Unexpected pointer type returned from std::unique_ptr::get.");
static_assert(
std::is_same<decltype(obj.get()),
thrust::universal_ptr<some_object<T> > >::value,
"Unexpected pointer type returned from std::unique_ptr::get.");
ASSERT_EQ(*raw, T(42));
ASSERT_EQ(*raw.get(), T(42));
ASSERT_EQ(obj->getter(), T(42));
ASSERT_EQ((*obj).getter(), T(42));
ASSERT_EQ(obj.get()->getter(), T(42));
ASSERT_EQ((*obj.get()).getter(), T(42));
}
TYPED_TEST(UniversalTests, TestUniversalIterationRaw)
{
using T = typename TestFixture::input_type;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
auto array = thrust::allocate_unique_n<T>(
thrust::universal_allocator<T>{}, 6, 42);
static_assert(
std::is_same<decltype(array.get()), thrust::universal_ptr<T> >::value,
"Unexpected pointer type returned from std::unique_ptr::get.");
for (auto iter = array.get(), end = array.get() + 6; iter < end; ++iter)
{
ASSERT_EQ(*iter, T(42));
ASSERT_EQ(*iter.get(), T(42));
}
}
TYPED_TEST(UniversalTests, TestUniversalIterationObj)
{
using T = typename TestFixture::input_type;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
auto array = thrust::allocate_unique_n<some_object<T>>(
thrust::universal_allocator<some_object<T>>{}, 6, 42);
static_assert(
std::is_same<decltype(array.get()),
thrust::universal_ptr<some_object<T>>>::value,
"Unexpected pointer type returned from std::unique_ptr::get.");
for (auto iter = array.get(), end = array.get() + 6; iter < end; ++iter)
{
ASSERT_EQ(iter->getter(), T(42));
ASSERT_EQ((*iter).getter(), T(42));
ASSERT_EQ(iter.get()->getter(), T(42));
ASSERT_EQ((*iter.get()).getter(), T(42));
}
}
TYPED_TEST(UniversalTests, TestUniversalRawPointerCast)
{
using T = typename TestFixture::input_type;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
auto obj = thrust::allocate_unique<T>(thrust::universal_allocator<T>{}, 42);
static_assert(
std::is_same<decltype(obj.get()), thrust::universal_ptr<T>>::value,
"Unexpected pointer type returned from std::unique_ptr::get.");
static_assert(
std::is_same<decltype(thrust::raw_pointer_cast(obj.get())), T*>::value,
"Unexpected pointer type returned from thrust::raw_pointer_cast.");
*thrust::raw_pointer_cast(obj.get()) = T(17);
ASSERT_EQ(*obj, T(17));
}
TYPED_TEST(UniversalTests, TestUniversalThrustVector)
{
using T = typename TestFixture::input_type;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
for(auto size : get_sizes())
{
SCOPED_TRACE(testing::Message() << "with size = " << size);
thrust::host_vector<T> host(size);
thrust::universal_vector<T> universal(size);
static_assert(
std::is_same<typename std::decay<decltype(universal)>::type::pointer,
thrust::universal_ptr<T>>::value,
"Unexpected thrust::universal_vector pointer type.");
thrust::sequence(host.begin(), host.end(), 0);
thrust::sequence(universal.begin(), universal.end(), 0);
ASSERT_EQ(host.size(), size);
ASSERT_EQ(universal.size(), size);
for(unsigned int i = 0; i < size; i++)
ASSERT_EQ(host[i], universal[i]);
}
}
// Verify that a std::vector using the universal allocator will work with
// Standard Library algorithms.
TYPED_TEST(UniversalTests, TestUniversalStdVector)
{
using T = typename TestFixture::input_type;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
for(auto size : get_sizes())
{
SCOPED_TRACE(testing::Message() << "with size = " << size);
std::vector<T> host(size);
std::vector<T, thrust::universal_allocator<T>> universal(size);
static_assert(
std::is_same<typename std::decay<decltype(universal)>::type::pointer,
thrust::universal_ptr<T>>::value,
"Unexpected std::vector pointer type.");
std::iota(host.begin(), host.end(), 0);
std::iota(universal.begin(), universal.end(), 0);
ASSERT_EQ(host.size(), size);
ASSERT_EQ(universal.size(), size);
for(unsigned int i = 0; i < size; i++)
ASSERT_EQ(host[i], universal[i]);
}
}
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