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lammps/lib/kokkos/core/unit_test/TestViewHooks.hpp
2023-03-03 09:22:33 -07:00

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C++

//@HEADER
// ************************************************************************
//
// Kokkos v. 4.0
// Copyright (2022) National Technology & Engineering
// Solutions of Sandia, LLC (NTESS).
//
// Under the terms of Contract DE-NA0003525 with NTESS,
// the U.S. Government retains certain rights in this software.
//
// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
// See https://kokkos.org/LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//@HEADER
#ifndef TESTVIEWHOOKS_HPP_
#define TESTVIEWHOOKS_HPP_
#include <gtest/gtest.h>
#include <Kokkos_Core.hpp>
namespace Test {
template <class DeviceType>
struct TestViewHooks {
struct TestSubscriber;
static_assert(
Kokkos::Experimental::is_hooks_policy<
Kokkos::Experimental::SubscribableViewHooks<TestSubscriber> >::value,
"Must be a hooks policy");
using test_view_type =
Kokkos::View<double **,
Kokkos::Experimental::SubscribableViewHooks<TestSubscriber>,
DeviceType>;
struct TestSubscriber {
static test_view_type *self_ptr;
static const test_view_type *other_ptr;
template <typename View>
static void copy_constructed(View &self, const View &other) {
self_ptr = &self;
other_ptr = &other;
}
template <typename View>
static void move_constructed(View &self, const View &other) {
self_ptr = &self;
other_ptr = &other;
}
template <typename View>
static void copy_assigned(View &self, const View &other) {
self_ptr = &self;
other_ptr = &other;
}
template <typename View>
static void move_assigned(View &self, const View &other) {
self_ptr = &self;
other_ptr = &other;
}
static void reset() {
self_ptr = nullptr;
other_ptr = nullptr;
}
};
static void testViewHooksCopyConstruct() {
TestSubscriber::reset();
test_view_type testa;
test_view_type testb(testa);
EXPECT_EQ(TestSubscriber::self_ptr, &testb);
EXPECT_EQ(TestSubscriber::other_ptr, &testa);
}
static void testViewHooksMoveConstruct() {
TestSubscriber::reset();
test_view_type testa;
test_view_type testb(std::move(testa));
EXPECT_EQ(TestSubscriber::self_ptr, &testb);
// This is valid, even if the view is moved-from
EXPECT_EQ(TestSubscriber::other_ptr, &testa);
}
static void testViewHooksCopyAssign() {
TestSubscriber::reset();
test_view_type testa;
test_view_type testb;
testb = testa;
EXPECT_EQ(TestSubscriber::self_ptr, &testb);
EXPECT_EQ(TestSubscriber::other_ptr, &testa);
}
static void testViewHooksMoveAssign() {
TestSubscriber::reset();
test_view_type testa;
test_view_type testb;
testb = std::move(testa);
EXPECT_EQ(TestSubscriber::self_ptr, &testb);
// This is valid, even if the view is moved-from
EXPECT_EQ(TestSubscriber::other_ptr, &testa);
}
};
template <class DeviceType>
typename TestViewHooks<DeviceType>::test_view_type
*TestViewHooks<DeviceType>::TestSubscriber::self_ptr = nullptr;
template <class DeviceType>
const typename TestViewHooks<DeviceType>::test_view_type
*TestViewHooks<DeviceType>::TestSubscriber::other_ptr = nullptr;
TEST(TEST_CATEGORY, view_hooks) {
using ExecSpace = TEST_EXECSPACE;
TestViewHooks<ExecSpace>::testViewHooksCopyConstruct();
TestViewHooks<ExecSpace>::testViewHooksMoveConstruct();
TestViewHooks<ExecSpace>::testViewHooksCopyAssign();
TestViewHooks<ExecSpace>::testViewHooksMoveAssign();
}
} // namespace Test
#endif // TESTVIEWHOOKS_HPP_