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#include <thrust/execution_policy.h>
#include <thrust/sort.h>
#include <unittest/unittest.h>
#ifdef THRUST_TEST_DEVICE_SIDE
template <typename ExecutionPolicy, typename Iterator1, typename Iterator2>
__global__ void is_sorted_until_kernel(ExecutionPolicy exec, Iterator1 first, Iterator1 last, Iterator2 result)
{
*result = thrust::is_sorted_until(exec, first, last);
}
template <typename ExecutionPolicy>
void TestIsSortedUntilDevice(ExecutionPolicy exec)
{
size_t n = 1000;
thrust::device_vector<int> v = unittest::random_integers<int>(n);
typedef typename thrust::device_vector<int>::iterator iter_type;
thrust::device_vector<iter_type> result(1);
v[0] = 1;
v[1] = 0;
is_sorted_until_kernel<<<1, 1>>>(exec, v.begin(), v.end(), result.begin());
{
cudaError_t const err = cudaDeviceSynchronize();
ASSERT_EQUAL(cudaSuccess, err);
}
ASSERT_EQUAL_QUIET(v.begin() + 1, (iter_type) result[0]);
thrust::sort(v.begin(), v.end());
is_sorted_until_kernel<<<1, 1>>>(exec, v.begin(), v.end(), result.begin());
{
cudaError_t const err = cudaDeviceSynchronize();
ASSERT_EQUAL(cudaSuccess, err);
}
ASSERT_EQUAL_QUIET(v.end(), (iter_type) result[0]);
}
void TestIsSortedUntilDeviceSeq()
{
TestIsSortedUntilDevice(thrust::seq);
}
DECLARE_UNITTEST(TestIsSortedUntilDeviceSeq);
void TestIsSortedUntilDeviceDevice()
{
TestIsSortedUntilDevice(thrust::device);
}
DECLARE_UNITTEST(TestIsSortedUntilDeviceDevice);
#endif
void TestIsSortedUntilCudaStreams()
{
typedef thrust::device_vector<int> Vector;
typedef Vector::value_type T;
typedef Vector::iterator Iterator;
cudaStream_t s;
cudaStreamCreate(&s);
Vector v(4);
v[0] = 0;
v[1] = 5;
v[2] = 8;
v[3] = 0;
Iterator first = v.begin();
Iterator last = v.begin() + 0;
Iterator ref = last;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last));
last = v.begin() + 1;
ref = last;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last));
last = v.begin() + 2;
ref = last;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last));
last = v.begin() + 3;
ref = v.begin() + 3;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last));
last = v.begin() + 4;
ref = v.begin() + 3;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last));
last = v.begin() + 3;
ref = v.begin() + 3;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last, thrust::less<T>()));
last = v.begin() + 4;
ref = v.begin() + 3;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last, thrust::less<T>()));
last = v.begin() + 1;
ref = v.begin() + 1;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last, thrust::greater<T>()));
last = v.begin() + 4;
ref = v.begin() + 1;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last, thrust::greater<T>()));
first = v.begin() + 2;
last = v.begin() + 4;
ref = v.begin() + 4;
ASSERT_EQUAL_QUIET(ref, thrust::is_sorted_until(thrust::cuda::par.on(s), first, last, thrust::greater<T>()));
cudaStreamDestroy(s);
}
DECLARE_UNITTEST(TestIsSortedUntilCudaStreams);
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