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//@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
#include <gtest/gtest.h>
#include <Kokkos_Core.hpp>
namespace {
// User-defined types with a View data member
template <class V>
class S {
V v_;
public:
template <class... Extents>
S(std::string label, Extents... extents) : v_(std::move(label), extents...) {}
KOKKOS_DEFAULTED_FUNCTION S() = default;
};
template <class V>
class N { // not default constructible
V v_;
public:
template <class... Extents>
N(std::string label, Extents... extents) : v_(std::move(label), extents...) {}
};
template <class V>
class H { // constructible and destructible only from on the host side
V v_;
public:
template <class... Extents>
H(std::string label, Extents... extents) : v_(std::move(label), extents...) {}
H() {}
~H() {}
};
template <class V>
void test_view_of_views_default() {
// assigning a default-constructed view to destruct the inner objects
using VoV = Kokkos::View<V**, Kokkos::HostSpace>;
VoV vov("vov", 2, 3);
V a("a");
V b("b");
vov(0, 0) = a;
vov(1, 0) = a;
vov(0, 1) = b;
#ifndef KOKKOS_ENABLE_IMPL_VIEW_OF_VIEWS_DESTRUCTOR_PRECONDITION_VIOLATION_WORKAROUND
vov(0, 0) = V();
vov(1, 0) = V();
vov(0, 1) = V();
#endif
}
template <class V>
void test_view_of_views_without_initializing() {
// using placement new to construct the inner objects and explicitly
// calling the destructor
using VoV = Kokkos::View<V**, Kokkos::HostSpace>;
VoV vov(Kokkos::view_alloc("vov", Kokkos::WithoutInitializing), 2, 3);
V a("a");
V b("b");
new (&vov(0, 0)) V(a);
new (&vov(1, 0)) V(a);
new (&vov(0, 1)) V(b);
#ifndef KOKKOS_ENABLE_IMPL_VIEW_OF_VIEWS_DESTRUCTOR_PRECONDITION_VIOLATION_WORKAROUND
vov(0, 0).~V();
vov(1, 0).~V();
vov(0, 1).~V();
#else
// leaks memory
#endif
}
template <class V>
void test_view_of_views_sequential_host_init() {
// inner views value-initialized sequentially on the host, and also
// sequentially destructed on the host, without the need to cleanup
using VoV = Kokkos::View<V**, Kokkos::HostSpace>;
VoV vov(Kokkos::view_alloc("vov", Kokkos::SequentialHostInit), 2, 3);
V a("a");
V b("b");
vov(0, 0) = a;
vov(1, 0) = a;
vov(0, 1) = b;
}
TEST(TEST_CATEGORY, view_of_views_default) {
test_view_of_views_default<Kokkos::View<int, TEST_EXECSPACE>>();
test_view_of_views_default<Kokkos::View<int[4], TEST_EXECSPACE>>();
// User-defined type with View data member
test_view_of_views_default<S<Kokkos::View<float, TEST_EXECSPACE>>>();
}
TEST(TEST_CATEGORY, view_of_views_without_initializing) {
test_view_of_views_without_initializing<Kokkos::View<int, TEST_EXECSPACE>>();
test_view_of_views_without_initializing<
S<Kokkos::View<float, TEST_EXECSPACE>>>();
test_view_of_views_without_initializing<
N<Kokkos::View<double, TEST_EXECSPACE>>>();
test_view_of_views_without_initializing<
H<Kokkos::View<int, TEST_EXECSPACE>>>();
}
TEST(TEST_CATEGORY, test_view_of_views_sequential_host_init) {
test_view_of_views_sequential_host_init<Kokkos::View<int, TEST_EXECSPACE>>();
test_view_of_views_sequential_host_init<
S<Kokkos::View<float, TEST_EXECSPACE>>>();
test_view_of_views_sequential_host_init<
H<Kokkos::View<int, TEST_EXECSPACE>>>();
}
} // namespace
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