bionic_macros.h revision 03eebcb6e8762e668a0d3af6bb303cccb88c5b81
18eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes/* 28eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * Copyright (C) 2010 The Android Open Source Project 38eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * 48eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 58eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * you may not use this file except in compliance with the License. 68eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * You may obtain a copy of the License at 78eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * 88eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 98eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * 108eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * Unless required by applicable law or agreed to in writing, software 118eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 128eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 138eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * See the License for the specific language governing permissions and 148eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes * limitations under the License. 158eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes */ 168eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes 178eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes#ifndef _BIONIC_MACROS_H_ 188eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes#define _BIONIC_MACROS_H_ 198eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes 208eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes// DISALLOW_COPY_AND_ASSIGN disallows the copy and operator= functions. 218eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes// It goes in the private: declarations in a class. 228eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes#define DISALLOW_COPY_AND_ASSIGN(TypeName) \ 238eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes TypeName(const TypeName&); \ 248eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes void operator=(const TypeName&) 258eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes 268eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes// A macro to disallow all the implicit constructors, namely the 278eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes// default constructor, copy constructor and operator= functions. 288eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes// 298eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes// This should be used in the private: declarations for a class 308eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes// that wants to prevent anyone from instantiating it. This is 318eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes// especially useful for classes containing only static methods. 328eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \ 338eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes TypeName(); \ 348eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes DISALLOW_COPY_AND_ASSIGN(TypeName) 358eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes 3603eebcb6e8762e668a0d3af6bb303cccb88c5b81Christopher Ferris#define BIONIC_ALIGN(value, alignment) \ 3703eebcb6e8762e668a0d3af6bb303cccb88c5b81Christopher Ferris (((value) + (alignment) - 1) & ~((alignment) - 1)) 3803eebcb6e8762e668a0d3af6bb303cccb88c5b81Christopher Ferris 3903eebcb6e8762e668a0d3af6bb303cccb88c5b81Christopher Ferris#define BIONIC_ROUND_UP_POWER_OF_2(value) \ 4003eebcb6e8762e668a0d3af6bb303cccb88c5b81Christopher Ferris (1UL << (sizeof(value) * 8 - 1 - __builtin_clz(value))) 4103eebcb6e8762e668a0d3af6bb303cccb88c5b81Christopher Ferris 428eac9af24ea7e570e0b297bcd6ac8a46ba3ecc39Elliott Hughes#endif // _BIONIC_MACROS_H_ 43