1 /* 2 * Copyright 2011, 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 17 #ifndef TRAITS_H 18 #define TRAITS_H 19 20 #include <stddef.h> 21 22 template <typename Type> 23 struct TypeTraits { 24 private: 25 struct AlignmentTest { 26 char pending; 27 Type element; 28 }; 29 30 public: 31 enum { size = sizeof(Type) }; 32 enum { align = offsetof(AlignmentTest, element) }; 33 }; 34 35 #define TYPE_TRAITS_SPECIALIZE(TYPE, SIZE, ALIGN) \ 36 template <> \ 37 struct TypeTraits<TYPE> { \ 38 enum { size = SIZE }; \ 39 enum { align = ALIGN }; \ 40 }; 41 42 #endif // TRAITS_H 43
