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#include <unittest/unittest.h>
#include <thrust/for_each.h>
#include <thrust/device_ptr.h>
#include <thrust/iterator/counting_iterator.h>
#include <thrust/iterator/retag.h>
#include <thrust/device_malloc.h>
#include <thrust/device_free.h>
#include <algorithm>
THRUST_DISABLE_MSVC_POSSIBLE_LOSS_OF_DATA_WARNING_BEGIN
template <typename T>
class mark_present_for_each
{
public:
T * ptr;
__host__ __device__ void operator()(T x){ ptr[(int) x] = 1; }
};
template <class Vector>
void TestForEachSimple(void)
{
typedef typename Vector::value_type T;
Vector input(5);
Vector output(7, (T) 0);
input[0] = 3; input[1] = 2; input[2] = 3; input[3] = 4; input[4] = 6;
mark_present_for_each<T> f;
f.ptr = thrust::raw_pointer_cast(output.data());
typename Vector::iterator result = thrust::for_each(input.begin(), input.end(), f);
ASSERT_EQUAL(output[0], 0);
ASSERT_EQUAL(output[1], 0);
ASSERT_EQUAL(output[2], 1);
ASSERT_EQUAL(output[3], 1);
ASSERT_EQUAL(output[4], 1);
ASSERT_EQUAL(output[5], 0);
ASSERT_EQUAL(output[6], 1);
ASSERT_EQUAL_QUIET(result, input.end());
}
DECLARE_INTEGRAL_VECTOR_UNITTEST(TestForEachSimple);
template<typename InputIterator, typename Function>
InputIterator for_each(my_system &system, InputIterator first, InputIterator, Function)
{
system.validate_dispatch();
return first;
}
void TestForEachDispatchExplicit()
{
thrust::device_vector<int> vec(1);
my_system sys(0);
thrust::for_each(sys, vec.begin(), vec.end(), 0);
ASSERT_EQUAL(true, sys.is_valid());
}
DECLARE_UNITTEST(TestForEachDispatchExplicit);
template<typename InputIterator, typename Function>
InputIterator for_each(my_tag, InputIterator first, InputIterator, Function)
{
*first = 13;
return first;
}
void TestForEachDispatchImplicit()
{
thrust::device_vector<int> vec(1);
thrust::for_each(thrust::retag<my_tag>(vec.begin()),
thrust::retag<my_tag>(vec.end()),
0);
ASSERT_EQUAL(13, vec.front());
}
DECLARE_UNITTEST(TestForEachDispatchImplicit);
template <class Vector>
void TestForEachNSimple(void)
{
typedef typename Vector::value_type T;
Vector input(5);
Vector output(7, (T) 0);
input[0] = 3; input[1] = 2; input[2] = 3; input[3] = 4; input[4] = 6;
mark_present_for_each<T> f;
f.ptr = thrust::raw_pointer_cast(output.data());
typename Vector::iterator result = thrust::for_each_n(input.begin(), input.size(), f);
ASSERT_EQUAL(output[0], 0);
ASSERT_EQUAL(output[1], 0);
ASSERT_EQUAL(output[2], 1);
ASSERT_EQUAL(output[3], 1);
ASSERT_EQUAL(output[4], 1);
ASSERT_EQUAL(output[5], 0);
ASSERT_EQUAL(output[6], 1);
ASSERT_EQUAL_QUIET(result, input.end());
}
DECLARE_INTEGRAL_VECTOR_UNITTEST(TestForEachNSimple);
template<typename InputIterator, typename Size, typename Function>
InputIterator for_each_n(my_system &system, InputIterator first, Size, Function)
{
system.validate_dispatch();
return first;
}
void TestForEachNDispatchExplicit()
{
thrust::device_vector<int> vec(1);
my_system sys(0);
thrust::for_each_n(sys, vec.begin(), vec.size(), 0);
ASSERT_EQUAL(true, sys.is_valid());
}
DECLARE_UNITTEST(TestForEachNDispatchExplicit);
template<typename InputIterator, typename Size, typename Function>
InputIterator for_each_n(my_tag, InputIterator first, Size, Function)
{
*first = 13;
return first;
}
void TestForEachNDispatchImplicit()
{
thrust::device_vector<int> vec(1);
thrust::for_each_n(thrust::retag<my_tag>(vec.begin()),
vec.size(),
0);
ASSERT_EQUAL(13, vec.front());
}
DECLARE_UNITTEST(TestForEachNDispatchImplicit);
void TestForEachSimpleAnySystem(void)
{
thrust::device_vector<int> output(7, 0);
mark_present_for_each<int> f;
f.ptr = thrust::raw_pointer_cast(output.data());
thrust::counting_iterator<int> result = thrust::for_each(thrust::make_counting_iterator(0), thrust::make_counting_iterator(5), f);
ASSERT_EQUAL(output[0], 1);
ASSERT_EQUAL(output[1], 1);
ASSERT_EQUAL(output[2], 1);
ASSERT_EQUAL(output[3], 1);
ASSERT_EQUAL(output[4], 1);
ASSERT_EQUAL(output[5], 0);
ASSERT_EQUAL(output[6], 0);
ASSERT_EQUAL_QUIET(result, thrust::make_counting_iterator(5));
}
DECLARE_UNITTEST(TestForEachSimpleAnySystem);
void TestForEachNSimpleAnySystem(void)
{
thrust::device_vector<int> output(7, 0);
mark_present_for_each<int> f;
f.ptr = thrust::raw_pointer_cast(output.data());
thrust::counting_iterator<int> result = thrust::for_each_n(thrust::make_counting_iterator(0), 5, f);
ASSERT_EQUAL(output[0], 1);
ASSERT_EQUAL(output[1], 1);
ASSERT_EQUAL(output[2], 1);
ASSERT_EQUAL(output[3], 1);
ASSERT_EQUAL(output[4], 1);
ASSERT_EQUAL(output[5], 0);
ASSERT_EQUAL(output[6], 0);
ASSERT_EQUAL_QUIET(result, thrust::make_counting_iterator(5));
}
DECLARE_UNITTEST(TestForEachNSimpleAnySystem);
template <typename T>
void TestForEach(const size_t n)
{
const size_t output_size = std::min((size_t) 10, 2 * n);
thrust::host_vector<T> h_input = unittest::random_integers<T>(n);
for(size_t i = 0; i < n; i++)
h_input[i] = ((size_t) h_input[i]) % output_size;
thrust::device_vector<T> d_input = h_input;
thrust::host_vector<T> h_output(output_size, (T) 0);
thrust::device_vector<T> d_output(output_size, (T) 0);
mark_present_for_each<T> h_f;
mark_present_for_each<T> d_f;
h_f.ptr = &h_output[0];
d_f.ptr = (&d_output[0]).get();
typename thrust::host_vector<T>::iterator h_result =
thrust::for_each(h_input.begin(), h_input.end(), h_f);
typename thrust::device_vector<T>::iterator d_result =
thrust::for_each(d_input.begin(), d_input.end(), d_f);
ASSERT_EQUAL(h_output, d_output);
ASSERT_EQUAL_QUIET(h_result, h_input.end());
ASSERT_EQUAL_QUIET(d_result, d_input.end());
}
DECLARE_VARIABLE_UNITTEST(TestForEach);
template <typename T>
void TestForEachN(const size_t n)
{
const size_t output_size = std::min((size_t) 10, 2 * n);
thrust::host_vector<T> h_input = unittest::random_integers<T>(n);
for(size_t i = 0; i < n; i++)
h_input[i] = ((size_t) h_input[i]) % output_size;
thrust::device_vector<T> d_input = h_input;
thrust::host_vector<T> h_output(output_size, (T) 0);
thrust::device_vector<T> d_output(output_size, (T) 0);
mark_present_for_each<T> h_f;
mark_present_for_each<T> d_f;
h_f.ptr = &h_output[0];
d_f.ptr = (&d_output[0]).get();
typename thrust::host_vector<T>::iterator h_result =
thrust::for_each_n(h_input.begin(), h_input.size(), h_f);
typename thrust::device_vector<T>::iterator d_result =
thrust::for_each_n(d_input.begin(), d_input.size(), d_f);
ASSERT_EQUAL(h_output, d_output);
ASSERT_EQUAL_QUIET(h_result, h_input.end());
ASSERT_EQUAL_QUIET(d_result, d_input.end());
}
DECLARE_VARIABLE_UNITTEST(TestForEachN);
template <typename T, unsigned int N>
struct SetFixedVectorToConstant
{
FixedVector<T,N> exemplar;
SetFixedVectorToConstant(T scalar) : exemplar(scalar) {}
__host__ __device__
void operator()(FixedVector<T,N>& t)
{
t = exemplar;
}
};
template <typename T, unsigned int N>
void _TestForEachWithLargeTypes(void)
{
size_t n = (64 * 1024) / sizeof(FixedVector<T,N>);
thrust::host_vector< FixedVector<T,N> > h_data(n);
for(size_t i = 0; i < h_data.size(); i++)
h_data[i] = FixedVector<T,N>(i);
thrust::device_vector< FixedVector<T,N> > d_data = h_data;
SetFixedVectorToConstant<T,N> func(123);
thrust::for_each(h_data.begin(), h_data.end(), func);
thrust::for_each(d_data.begin(), d_data.end(), func);
ASSERT_EQUAL_QUIET(h_data, d_data);
}
void TestForEachWithLargeTypes(void)
{
_TestForEachWithLargeTypes<int, 1>();
_TestForEachWithLargeTypes<int, 2>();
_TestForEachWithLargeTypes<int, 4>();
_TestForEachWithLargeTypes<int, 8>();
_TestForEachWithLargeTypes<int, 16>();
_TestForEachWithLargeTypes<int, 32>(); // fails on Linux 32 w/ gcc 4.1
_TestForEachWithLargeTypes<int, 64>();
_TestForEachWithLargeTypes<int, 128>();
_TestForEachWithLargeTypes<int, 256>();
_TestForEachWithLargeTypes<int, 512>();
// XXX parallel_for doens't support large types
// _TestForEachWithLargeTypes<int, 1024>(); // fails on Vista 64 w/ VS2008
}
DECLARE_UNITTEST(TestForEachWithLargeTypes);
template <typename T, unsigned int N>
void _TestForEachNWithLargeTypes(void)
{
size_t n = (64 * 1024) / sizeof(FixedVector<T,N>);
thrust::host_vector< FixedVector<T,N> > h_data(n);
for(size_t i = 0; i < h_data.size(); i++)
h_data[i] = FixedVector<T,N>(i);
thrust::device_vector< FixedVector<T,N> > d_data = h_data;
SetFixedVectorToConstant<T,N> func(123);
thrust::for_each_n(h_data.begin(), h_data.size(), func);
thrust::for_each_n(d_data.begin(), d_data.size(), func);
ASSERT_EQUAL_QUIET(h_data, d_data);
}
void TestForEachNWithLargeTypes(void)
{
_TestForEachNWithLargeTypes<int, 1>();
_TestForEachNWithLargeTypes<int, 2>();
_TestForEachNWithLargeTypes<int, 4>();
_TestForEachNWithLargeTypes<int, 8>();
_TestForEachNWithLargeTypes<int, 16>();
_TestForEachNWithLargeTypes<int, 32>(); // fails on Linux 32 w/ gcc 4.1
_TestForEachNWithLargeTypes<int, 64>();
_TestForEachNWithLargeTypes<int, 128>();
_TestForEachNWithLargeTypes<int, 256>();
_TestForEachNWithLargeTypes<int, 512>();
// XXX parallel_for doens't support large types
// _TestForEachNWithLargeTypes<int, 1024>(); // fails on Vista 64 w/ VS2008
}
DECLARE_UNITTEST(TestForEachNWithLargeTypes);
THRUST_DISABLE_MSVC_POSSIBLE_LOSS_OF_DATA_WARNING_END
struct only_set_when_expected
{
unsigned long long expected;
bool * flag;
__device__
void operator()(unsigned long long x)
{
if (x == expected)
{
*flag = true;
}
}
};
void TestForEachWithBigIndexesHelper(int magnitude)
{
thrust::counting_iterator<unsigned long long> begin(0);
thrust::counting_iterator<unsigned long long> end = begin + (1ull << magnitude);
ASSERT_EQUAL(thrust::distance(begin, end), 1ll << magnitude);
thrust::device_ptr<bool> has_executed = thrust::device_malloc<bool>(1);
*has_executed = false;
only_set_when_expected fn = { (1ull << magnitude) - 1, thrust::raw_pointer_cast(has_executed) };
thrust::for_each(thrust::device, begin, end, fn);
bool has_executed_h = *has_executed;
thrust::device_free(has_executed);
ASSERT_EQUAL(has_executed_h, true);
}
void TestForEachWithBigIndexes()
{
TestForEachWithBigIndexesHelper(30);
TestForEachWithBigIndexesHelper(31);
TestForEachWithBigIndexesHelper(32);
TestForEachWithBigIndexesHelper(33);
}
DECLARE_UNITTEST(TestForEachWithBigIndexes);
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