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#include <thrust/execution_policy.h>
#include <thrust/functional.h>
#include <thrust/sort.h>
#include <unittest/unittest.h>
template <typename T>
struct my_less
{
_CCCL_HOST_DEVICE bool operator()(const T& lhs, const T& rhs) const
{
return lhs < rhs;
}
};
#ifdef THRUST_TEST_DEVICE_SIDE
template <typename ExecutionPolicy, typename Iterator, typename Compare>
__global__ void sort_kernel(ExecutionPolicy exec, Iterator first, Iterator last, Compare comp)
{
thrust::sort(exec, first, last, comp);
}
template <typename T, typename ExecutionPolicy, typename Compare>
void TestComparisonSortDevice(ExecutionPolicy exec, const size_t n, Compare comp)
{
thrust::host_vector<T> h_data = unittest::random_integers<T>(n);
thrust::device_vector<T> d_data = h_data;
sort_kernel<<<1, 1>>>(exec, d_data.begin(), d_data.end(), comp);
cudaError_t const err = cudaDeviceSynchronize();
ASSERT_EQUAL(cudaSuccess, err);
thrust::sort(h_data.begin(), h_data.end(), comp);
ASSERT_EQUAL(h_data, d_data);
};
template <typename T>
struct TestComparisonSortDeviceSeq
{
void operator()(const size_t n)
{
TestComparisonSortDevice<T>(thrust::seq, n, my_less<T>());
}
};
VariableUnitTest<TestComparisonSortDeviceSeq, unittest::type_list<unittest::int8_t, unittest::int32_t>>
TestComparisonSortDeviceSeqInstance;
template <typename T>
struct TestComparisonSortDeviceDevice
{
void operator()(const size_t n)
{
TestComparisonSortDevice<T>(thrust::device, n, my_less<T>());
}
};
VariableUnitTest<TestComparisonSortDeviceDevice, unittest::type_list<unittest::int8_t, unittest::int32_t>>
TestComparisonSortDeviceDeviceDeviceInstance;
template <typename T, typename ExecutionPolicy>
void TestSortDevice(ExecutionPolicy exec, const size_t n)
{
TestComparisonSortDevice<T>(exec, n, thrust::less<T>());
};
template <typename T>
struct TestSortDeviceSeq
{
void operator()(const size_t n)
{
TestSortDevice<T>(thrust::seq, n);
}
};
VariableUnitTest<TestSortDeviceSeq, unittest::type_list<unittest::int8_t, unittest::int32_t>> TestSortDeviceSeqInstance;
template <typename T>
struct TestSortDeviceDevice
{
void operator()(const size_t n)
{
TestSortDevice<T>(thrust::device, n);
}
};
VariableUnitTest<TestSortDeviceDevice, unittest::type_list<unittest::int8_t, unittest::int32_t>>
TestSortDeviceDeviceInstance;
#endif
void TestSortCudaStreams()
{
thrust::device_vector<int> keys(10);
keys[0] = 9;
keys[1] = 3;
keys[2] = 2;
keys[3] = 0;
keys[4] = 4;
keys[5] = 7;
keys[6] = 8;
keys[7] = 1;
keys[8] = 5;
keys[9] = 6;
cudaStream_t s;
cudaStreamCreate(&s);
thrust::sort(thrust::cuda::par.on(s), keys.begin(), keys.end());
cudaStreamSynchronize(s);
ASSERT_EQUAL(true, thrust::is_sorted(keys.begin(), keys.end()));
cudaStreamDestroy(s);
}
DECLARE_UNITTEST(TestSortCudaStreams);
void TestComparisonSortCudaStreams()
{
thrust::device_vector<int> keys(10);
keys[0] = 9;
keys[1] = 3;
keys[2] = 2;
keys[3] = 0;
keys[4] = 4;
keys[5] = 7;
keys[6] = 8;
keys[7] = 1;
keys[8] = 5;
keys[9] = 6;
cudaStream_t s;
cudaStreamCreate(&s);
thrust::sort(thrust::cuda::par.on(s), keys.begin(), keys.end(), my_less<int>());
cudaStreamSynchronize(s);
ASSERT_EQUAL(true, thrust::is_sorted(keys.begin(), keys.end(), my_less<int>()));
cudaStreamDestroy(s);
}
DECLARE_UNITTEST(TestComparisonSortCudaStreams);
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