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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright Contributors to the Kokkos project
#include <gtest/gtest.h>
#include <sstream>
#include <iostream>
#include <Kokkos_Macros.hpp>
#ifdef KOKKOS_ENABLE_EXPERIMENTAL_CXX20_MODULES
import kokkos.core;
import kokkos.core_impl;
#else
#include <Kokkos_Core.hpp>
#endif
namespace Test {
/*--------------------------------------------------------------------------*/
template <class Space>
struct TestViewMappingAtomic {
using ExecSpace = typename Space::execution_space;
using MemSpace = typename Space::memory_space;
using mem_trait = Kokkos::MemoryTraits<Kokkos::Atomic>;
using T = Kokkos::View<int *, ExecSpace>;
using T_atom = Kokkos::View<int *, ExecSpace, mem_trait>;
T x;
T_atom x_atom;
enum { N = 100000 };
struct TagInit {};
struct TagUpdate {};
struct TagVerify {};
KOKKOS_INLINE_FUNCTION
void operator()(const TagInit &, const int i) const { x(i) = i; }
KOKKOS_INLINE_FUNCTION
void operator()(const TagUpdate &, const int i) const { x_atom(i % 2) += 1; }
KOKKOS_INLINE_FUNCTION
void operator()(const TagVerify &, const int i, long &error_count) const {
if (i < 2) {
if (x(i) != int(i + N / 2)) ++error_count;
} else {
if (x(i) != int(i)) ++error_count;
}
}
TestViewMappingAtomic() : x("x", N), x_atom(x) {}
void run() {
ASSERT_TRUE(T::reference_type_is_lvalue_reference);
ASSERT_FALSE(T_atom::reference_type_is_lvalue_reference);
Kokkos::parallel_for(Kokkos::RangePolicy<ExecSpace, TagInit>(0, N), *this);
Kokkos::parallel_for(Kokkos::RangePolicy<ExecSpace, TagUpdate>(0, N),
*this);
long error_count = -1;
Kokkos::parallel_reduce(Kokkos::RangePolicy<ExecSpace, TagVerify>(0, N),
*this, error_count);
ASSERT_EQ(0, error_count);
typename T_atom::host_mirror_type x_host = Kokkos::create_mirror_view(x);
Kokkos::deep_copy(x_host, x);
error_count = -1;
Kokkos::parallel_reduce(
Kokkos::RangePolicy<Kokkos::DefaultHostExecutionSpace, TagVerify>(0, N),
[=](const TagVerify &, const int i, long &tmp_error_count) {
if (i < 2) {
if (x_host(i) != int(i + N / 2)) ++tmp_error_count;
} else {
if (x_host(i) != int(i)) ++tmp_error_count;
}
},
error_count);
ASSERT_EQ(0, error_count);
Kokkos::deep_copy(x, x_host);
}
};
TEST(TEST_CATEGORY, view_mapping_atomic) {
TestViewMappingAtomic<TEST_EXECSPACE> f;
f.run();
}
} // namespace Test
/*--------------------------------------------------------------------------*/
namespace Test {
struct MappingClassValueType {
KOKKOS_INLINE_FUNCTION
MappingClassValueType() {
#if 0
KOKKOS_IF_ON_DEVICE(
(printf("TestViewMappingClassValue construct on Device\n");))
KOKKOS_IF_ON_HOST((printf("TestViewMappingClassValue construct on Host\n");))
#endif
}
KOKKOS_INLINE_FUNCTION
~MappingClassValueType() {
#if 0
KOKKOS_IF_ON_DEVICE(
(printf("TestViewMappingClassValue destruct on Device\n");))
KOKKOS_IF_ON_HOST((printf("TestViewMappingClassValue destruct on Host\n");))
#endif
}
};
template <class Space>
void test_view_mapping_class_value() {
using ExecSpace = typename Space::execution_space;
ExecSpace().fence();
{
Kokkos::View<MappingClassValueType, ExecSpace> a("a");
ExecSpace().fence();
}
ExecSpace().fence();
}
TEST(TEST_CATEGORY, view_mapping_class_value) {
test_view_mapping_class_value<TEST_EXECSPACE>();
}
} // namespace Test
/*--------------------------------------------------------------------------*/
namespace Test {
TEST(TEST_CATEGORY, view_mapping_assignable) {
using exec_space = TEST_EXECSPACE;
{ // Assignment of rank-0 Left = Right
using dst_traits = Kokkos::ViewTraits<int, Kokkos::LayoutLeft, exec_space>;
using src_traits = Kokkos::ViewTraits<int, Kokkos::LayoutRight, exec_space>;
using mapping = Kokkos::Impl::ViewMapping<dst_traits, src_traits, void>;
static_assert(mapping::is_assignable);
Kokkos::View<int, Kokkos::LayoutRight, exec_space> src;
Kokkos::View<int, Kokkos::LayoutLeft, exec_space> dst(src);
dst = src;
}
{ // Assignment of rank-0 Right = Left
using dst_traits = Kokkos::ViewTraits<int, Kokkos::LayoutRight, exec_space>;
using src_traits = Kokkos::ViewTraits<int, Kokkos::LayoutLeft, exec_space>;
using mapping = Kokkos::Impl::ViewMapping<dst_traits, src_traits, void>;
static_assert(mapping::is_assignable);
Kokkos::View<int, Kokkos::LayoutLeft, exec_space> src;
Kokkos::View<int, Kokkos::LayoutRight, exec_space> dst(src);
dst = src;
}
{ // Assignment of rank-1 Left = Right
using dst_traits =
Kokkos::ViewTraits<int *, Kokkos::LayoutLeft, exec_space>;
using src_traits =
Kokkos::ViewTraits<int *, Kokkos::LayoutRight, exec_space>;
using mapping = Kokkos::Impl::ViewMapping<dst_traits, src_traits, void>;
static_assert(mapping::is_assignable);
Kokkos::View<int *, Kokkos::LayoutRight, exec_space> src;
Kokkos::View<int *, Kokkos::LayoutLeft, exec_space> dst(src);
dst = src;
}
{ // Assignment of rank-1 Right = Left
using dst_traits =
Kokkos::ViewTraits<int *, Kokkos::LayoutRight, exec_space>;
using src_traits =
Kokkos::ViewTraits<int *, Kokkos::LayoutLeft, exec_space>;
using mapping = Kokkos::Impl::ViewMapping<dst_traits, src_traits, void>;
static_assert(mapping::is_assignable);
Kokkos::View<int *, Kokkos::LayoutLeft, exec_space> src;
Kokkos::View<int *, Kokkos::LayoutRight, exec_space> dst(src);
dst = src;
}
{ // Assignment of rank-2 Left = Right
using dst_traits =
Kokkos::ViewTraits<int **, Kokkos::LayoutLeft, exec_space>;
using src_traits =
Kokkos::ViewTraits<int **, Kokkos::LayoutRight, exec_space>;
using mapping = Kokkos::Impl::ViewMapping<dst_traits, src_traits, void>;
static_assert(!mapping::is_assignable);
}
{ // Assignment of rank-2 Right = Left
using dst_traits =
Kokkos::ViewTraits<int **, Kokkos::LayoutRight, exec_space>;
using src_traits =
Kokkos::ViewTraits<int **, Kokkos::LayoutLeft, exec_space>;
using mapping = Kokkos::Impl::ViewMapping<dst_traits, src_traits, void>;
static_assert(!mapping::is_assignable);
}
}
TEST(TEST_CATEGORY, view_mapping_trivially_copyable) {
using exec_space = TEST_EXECSPACE;
using dst_traits = Kokkos::ViewTraits<int *, exec_space>;
using src_traits = dst_traits;
using mapping = Kokkos::Impl::ViewMapping<dst_traits, src_traits, void>;
static_assert(std::is_trivially_copyable<mapping>{});
}
} // namespace Test
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