1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #ifndef MACROS_H
17 #define MACROS_H
18 
19 #include <type_traits>
20 
21 #define PREVENT_COPY_AND_ASSIGN(Type) \
22 private:                              \
23     Type(const Type&) = delete;       \
24     void operator=(const Type&) = delete
25 
26 #define HASHABLE_TYPE(Type)                                                \
27     bool operator==(const Type& other) const;                              \
28     hash_t hash() const;                                                   \
29     bool operator!=(const Type& other) const { return !(*this == other); } \
30     friend inline hash_t hash_type(const Type& entry) { return entry.hash(); }
31 
32 #define REQUIRE_COMPATIBLE_LAYOUT(Type) \
33     static_assert(std::is_standard_layout<Type>::value, #Type " must have standard layout")
34 
35 #define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
36 
37 #if ALIGN_DOUBLE
38 #define ALIGN_SZ (sizeof(double))
39 #else
40 #define ALIGN_SZ (sizeof(int))
41 #endif
42 
43 #define ALIGN(x) (((x) + ALIGN_SZ - 1) & ~(ALIGN_SZ - 1))
44 #define ALIGN_PTR(p) ((void*)(ALIGN((size_t)(p))))
45 
46 #endif /* MACROS_H */
47