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/*
* Copyright 2008-2013 NVIDIA Corporation
* Modifications Copyright© 2019 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/device_ptr.h>
#include <thrust/device_vector.h>
#include <thrust/functional.h>
#include <thrust/iterator/counting_iterator.h>
#include <thrust/iterator/transform_iterator.h>
#include "test_header.hpp"
template <typename Iterator1, typename Iterator2>
__global__
THRUST_HIP_LAUNCH_BOUNDS_DEFAULT
void simple_copy_on_device(Iterator1 first1, Iterator1 last1, Iterator2 first2)
{
while(first1 != last1)
*(first2++) = *(first1++);
}
template <typename Iterator1, typename Iterator2>
void simple_copy(Iterator1 first1, Iterator1 last1, Iterator2 first2)
{
hipLaunchKernelGGL(HIP_KERNEL_NAME(simple_copy_on_device<Iterator1, Iterator2>),
dim3(1),
dim3(1),
0,
0,
first1,
last1,
first2);
}
TEST(DereferenceTests, TestDeviceDereferenceDeviceVectorIterator)
{
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
for(auto seed : get_seeds())
{
SCOPED_TRACE(testing::Message() << "with seed= " << seed);
thrust::device_vector<int> input = get_random_data<int>(
100, std::numeric_limits<int>::min(), std::numeric_limits<int>::max(), seed);
thrust::device_vector<int> output(input.size(), 0);
simple_copy(input.begin(), input.end(), output.begin());
ASSERT_EQ(input, output);
}
}
TEST(DereferenceTests, TestDeviceDereferenceDevicePtr)
{
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
for(auto seed : get_seeds())
{
SCOPED_TRACE(testing::Message() << "with seed= " << seed);
thrust::device_vector<int> input = get_random_data<int>(
100, std::numeric_limits<int>::min(), std::numeric_limits<int>::max(), seed);
thrust::device_vector<int> output(input.size(), 0);
thrust::device_ptr<int> _first1 = &input[0];
thrust::device_ptr<int> _last1 = _first1 + input.size();
thrust::device_ptr<int> _first2 = &output[0];
simple_copy(_first1, _last1, _first2);
ASSERT_EQ(input, output);
}
}
TEST(DereferenceTests, TestDeviceDereferenceTransformIterator)
{
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
for(auto seed : get_seeds())
{
SCOPED_TRACE(testing::Message() << "with seed= " << seed);
thrust::device_vector<int> input = get_random_data<int>(
100, std::numeric_limits<int>::min(), std::numeric_limits<int>::max(), seed);
thrust::device_vector<int> output(input.size(), 0);
simple_copy(thrust::make_transform_iterator(input.begin(), thrust::identity<int>()),
thrust::make_transform_iterator(input.end(), thrust::identity<int>()),
output.begin());
ASSERT_EQ(input, output);
}
}
TEST(DereferenceTests, TestDeviceDereferenceCountingIterator)
{
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
thrust::counting_iterator<int> first(1);
thrust::counting_iterator<int> last(6);
thrust::device_vector<int> output(5);
simple_copy(first, last, output.begin());
ASSERT_EQ(output[0], 1);
ASSERT_EQ(output[1], 2);
ASSERT_EQ(output[2], 3);
ASSERT_EQ(output[3], 4);
ASSERT_EQ(output[4], 5);
}
TEST(DereferenceTests, TestDeviceDereferenceTransformedCountingIterator)
{
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
thrust::counting_iterator<int> first(1);
thrust::counting_iterator<int> last(6);
thrust::device_vector<int> output(5);
simple_copy(thrust::make_transform_iterator(first, thrust::negate<int>()),
thrust::make_transform_iterator(last, thrust::negate<int>()),
output.begin());
ASSERT_EQ(output[0], -1);
ASSERT_EQ(output[1], -2);
ASSERT_EQ(output[2], -3);
ASSERT_EQ(output[3], -4);
ASSERT_EQ(output[4], -5);
}
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