1 /**
2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <gtest/gtest.h>
17
18 #include <vector>
19
20 #include "libpandabase/mem/mem.h"
21 #include "runtime/include/class-inl.h"
22 #include "runtime/include/class_helper.h"
23 #include "runtime/include/coretypes/class.h"
24 #include "runtime/include/coretypes/tagged_value.h"
25
26 namespace panda::test {
27
28 using TaggedValue = coretypes::TaggedValue;
29 static constexpr size_t OBJECT_POINTER_SIZE = sizeof(object_pointer_type);
30 static constexpr size_t POINTER_SIZE = ClassHelper::POINTER_SIZE;
31
TEST(ClassSizeTest,TestSizeOfEmptyClass)32 TEST(ClassSizeTest, TestSizeOfEmptyClass)
33 {
34 const size_t aligned_class_size = AlignUp(sizeof(Class), OBJECT_POINTER_SIZE);
35 ASSERT_EQ(aligned_class_size, Class::ComputeClassSize(0, 0, 0, 0, 0, 0, 0, 0));
36 }
37
TEST(ClassSizeTest,TestSizeOfClassWithVtbl)38 TEST(ClassSizeTest, TestSizeOfClassWithVtbl)
39 {
40 const size_t aligned_class_size = AlignUp(sizeof(Class), OBJECT_POINTER_SIZE);
41 const size_t vtbl_size = 5;
42 ASSERT_EQ(aligned_class_size + vtbl_size * POINTER_SIZE, Class::ComputeClassSize(vtbl_size, 0, 0, 0, 0, 0, 0, 0));
43 }
44
TEST(ClassSizeTest,TestSizeOfClassWith8BitFields)45 TEST(ClassSizeTest, TestSizeOfClassWith8BitFields)
46 {
47 const size_t aligned_class_size = AlignUp(sizeof(Class), OBJECT_POINTER_SIZE);
48 const size_t num_8bit_fields = 1;
49 ASSERT_EQ(aligned_class_size + num_8bit_fields * sizeof(int8_t),
50 Class::ComputeClassSize(0, 0, num_8bit_fields, 0, 0, 0, 0, 0));
51 }
52
TEST(ClassSizeTest,TestSizeOfClassWith16BitFields)53 TEST(ClassSizeTest, TestSizeOfClassWith16BitFields)
54 {
55 const size_t aligned_class_size = AlignUp(sizeof(Class), OBJECT_POINTER_SIZE);
56 const size_t num_16bit_fields = 1;
57 ASSERT_EQ(aligned_class_size + num_16bit_fields * sizeof(int16_t),
58 Class::ComputeClassSize(0, 0, 0, num_16bit_fields, 0, 0, 0, 0));
59 }
60
TEST(ClassSizeTest,TestSizeOfClassWith32BitFields)61 TEST(ClassSizeTest, TestSizeOfClassWith32BitFields)
62 {
63 const size_t aligned_class_size = AlignUp(sizeof(Class), OBJECT_POINTER_SIZE);
64 const size_t num_32bit_fields = 1;
65 ASSERT_EQ(aligned_class_size + num_32bit_fields * sizeof(int32_t),
66 Class::ComputeClassSize(0, 0, 0, 0, num_32bit_fields, 0, 0, 0));
67 }
68
TEST(ClassSizeTest,TestSizeOfClassWith64BitFields)69 TEST(ClassSizeTest, TestSizeOfClassWith64BitFields)
70 {
71 const size_t aligned_class_size = AlignUp(sizeof(Class), OBJECT_POINTER_SIZE);
72 const size_t num_64bit_fields = 1;
73 if (AlignUp(aligned_class_size, sizeof(int64_t)) == aligned_class_size) {
74 ASSERT_EQ(aligned_class_size + num_64bit_fields * sizeof(int64_t),
75 Class::ComputeClassSize(0, 0, 0, 0, 0, num_64bit_fields, 0, 0));
76 } else {
77 ASSERT_EQ(AlignUp(aligned_class_size, sizeof(int64_t)) + num_64bit_fields * sizeof(int64_t),
78 Class::ComputeClassSize(0, 0, 0, 0, 0, num_64bit_fields, 0, 0));
79 }
80 }
81
TEST(ClassSizeTest,TestSizeOfClassWithRefFields)82 TEST(ClassSizeTest, TestSizeOfClassWithRefFields)
83 {
84 const size_t aligned_class_size = AlignUp(sizeof(Class), OBJECT_POINTER_SIZE);
85 const size_t num_ref_fields = 1;
86 ASSERT_EQ(aligned_class_size + num_ref_fields * OBJECT_POINTER_SIZE,
87 Class::ComputeClassSize(0, 0, 0, 0, 0, 0, num_ref_fields, 0));
88 }
89
TEST(ClassSizeTest,TestSizeOfClassWithAnyFields)90 TEST(ClassSizeTest, TestSizeOfClassWithAnyFields)
91 {
92 const size_t aligned_class_size = AlignUp(sizeof(Class), OBJECT_POINTER_SIZE);
93 const size_t num_any_fields = 1;
94 if (AlignUp(aligned_class_size, TaggedValue::TaggedTypeSize()) == aligned_class_size) {
95 ASSERT_EQ(aligned_class_size + num_any_fields * TaggedValue::TaggedTypeSize(),
96 Class::ComputeClassSize(0, 0, 0, 0, 0, 0, 0, num_any_fields));
97 } else {
98 ASSERT_EQ(AlignUp(aligned_class_size, TaggedValue::TaggedTypeSize()) +
99 num_any_fields * TaggedValue::TaggedTypeSize(),
100 Class::ComputeClassSize(0, 0, 0, 0, 0, 0, 0, num_any_fields));
101 }
102 }
103
TEST(ClassSizeTest,TestHoleFilling)104 TEST(ClassSizeTest, TestHoleFilling)
105 {
106 const size_t aligned_class_size = AlignUp(sizeof(Class), OBJECT_POINTER_SIZE);
107 const size_t num_64bit_fields = 1;
108 if (AlignUp(aligned_class_size, sizeof(int64_t)) != aligned_class_size) {
109 const size_t num_8bit_fields = 1;
110 ASSERT_EQ(AlignUp(aligned_class_size, sizeof(int64_t)) + num_64bit_fields * sizeof(int64_t),
111 Class::ComputeClassSize(0, 0, num_8bit_fields, 0, 0, num_64bit_fields, 0, 0));
112
113 const size_t num_16bit_fields = 1;
114 ASSERT_EQ(AlignUp(aligned_class_size, sizeof(int64_t)) + num_64bit_fields * sizeof(int64_t),
115 Class::ComputeClassSize(0, 0, 0, num_16bit_fields, 0, num_64bit_fields, 0, 0));
116
117 const size_t num_32bit_fields = 1;
118 ASSERT_EQ(AlignUp(aligned_class_size, sizeof(int64_t)) + num_64bit_fields * sizeof(int64_t),
119 Class::ComputeClassSize(0, 0, 0, 0, num_32bit_fields, num_64bit_fields, 0, 0));
120 }
121
122 const size_t num_any_fields = 1;
123 if (AlignUp(aligned_class_size, TaggedValue::TaggedTypeSize()) != aligned_class_size) {
124 const size_t num_8bit_fields = 1;
125 ASSERT_EQ(AlignUp(aligned_class_size, TaggedValue::TaggedTypeSize()) +
126 num_any_fields * TaggedValue::TaggedTypeSize(),
127 Class::ComputeClassSize(0, 0, num_8bit_fields, 0, 0, num_any_fields, 0, 0));
128
129 const size_t num_16bit_fields = 1;
130 ASSERT_EQ(AlignUp(aligned_class_size, TaggedValue::TaggedTypeSize()) +
131 num_any_fields * TaggedValue::TaggedTypeSize(),
132 Class::ComputeClassSize(0, 0, 0, num_16bit_fields, 0, num_any_fields, 0, 0));
133
134 const size_t num_32bit_fields = 1;
135 ASSERT_EQ(AlignUp(aligned_class_size, TaggedValue::TaggedTypeSize()) +
136 num_any_fields * TaggedValue::TaggedTypeSize(),
137 Class::ComputeClassSize(0, 0, 0, 0, num_32bit_fields, num_any_fields, 0, 0));
138 }
139 }
140
141 } // namespace panda::test
142