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#include <unittest/unittest.h>
#include <thrust/set_operations.h>
#include <thrust/functional.h>
#include <thrust/sort.h>
#include <thrust/extrema.h>
#include <thrust/iterator/discard_iterator.h>
template<typename ExecutionPolicy, typename Iterator1, typename Iterator2, typename Iterator3, typename Iterator4>
__global__
void set_intersection_kernel(ExecutionPolicy exec, Iterator1 first1, Iterator1 last1,
Iterator2 first2, Iterator2 last2,
Iterator3 result1,
Iterator4 result2)
{
*result2 = thrust::set_intersection(exec, first1, last1, first2, last2, result1);
}
template<typename ExecutionPolicy>
void TestSetIntersectionDevice(ExecutionPolicy exec)
{
typedef thrust::device_vector<int> Vector;
typedef Vector::iterator Iterator;
Vector a(3), b(4);
a[0] = 0; a[1] = 2; a[2] = 4;
b[0] = 0; b[1] = 3; b[2] = 3; b[3] = 4;
Vector ref(2);
ref[0] = 0; ref[1] = 4;
Vector result(2);
thrust::device_vector<Iterator> end_vec(1);
set_intersection_kernel<<<1,1>>>(exec, a.begin(), a.end(), b.begin(), b.end(), result.begin(), end_vec.begin());
cudaError_t const err = cudaDeviceSynchronize();
ASSERT_EQUAL(cudaSuccess, err);
Iterator end = end_vec.front();
ASSERT_EQUAL_QUIET(result.end(), end);
ASSERT_EQUAL(ref, result);
}
void TestSetIntersectionDeviceSeq()
{
TestSetIntersectionDevice(thrust::seq);
}
DECLARE_UNITTEST(TestSetIntersectionDeviceSeq);
void TestSetIntersectionDeviceDevice()
{
TestSetIntersectionDevice(thrust::device);
}
DECLARE_UNITTEST(TestSetIntersectionDeviceDevice);
void TestSetIntersectionCudaStreams()
{
typedef thrust::device_vector<int> Vector;
typedef Vector::iterator Iterator;
Vector a(3), b(4);
a[0] = 0; a[1] = 2; a[2] = 4;
b[0] = 0; b[1] = 3; b[2] = 3; b[3] = 4;
Vector ref(2);
ref[0] = 0; ref[1] = 4;
Vector result(2);
cudaStream_t s;
cudaStreamCreate(&s);
Iterator end = thrust::set_intersection(thrust::cuda::par.on(s),
a.begin(), a.end(),
b.begin(), b.end(),
result.begin());
cudaStreamSynchronize(s);
ASSERT_EQUAL_QUIET(result.end(), end);
ASSERT_EQUAL(ref, result);
cudaStreamDestroy(s);
}
DECLARE_UNITTEST(TestSetIntersectionCudaStreams);
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