73c963e4c5
There were two bugs here:
- For 64 bit values, this did not properly round up.
- The macro rounded to the power of 2 less than value, not to the power
of 2 greater than value.
(cherry picked from commit 27047faf28)
Change-Id: Idf1ec67854e1eb423704e599ae1c6b674d36618d
45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/*
|
|
* Copyright (C) 2010 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef _BIONIC_MACROS_H_
|
|
#define _BIONIC_MACROS_H_
|
|
|
|
// DISALLOW_COPY_AND_ASSIGN disallows the copy and operator= functions.
|
|
// It goes in the private: declarations in a class.
|
|
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
|
|
TypeName(const TypeName&); \
|
|
void operator=(const TypeName&)
|
|
|
|
// A macro to disallow all the implicit constructors, namely the
|
|
// default constructor, copy constructor and operator= functions.
|
|
//
|
|
// This should be used in the private: declarations for a class
|
|
// that wants to prevent anyone from instantiating it. This is
|
|
// especially useful for classes containing only static methods.
|
|
#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
|
|
TypeName(); \
|
|
DISALLOW_COPY_AND_ASSIGN(TypeName)
|
|
|
|
#define BIONIC_ALIGN(value, alignment) \
|
|
(((value) + (alignment) - 1) & ~((alignment) - 1))
|
|
|
|
#define BIONIC_ROUND_UP_POWER_OF_2(value) \
|
|
(sizeof(value) == 8) \
|
|
? (1UL << (64 - __builtin_clzl(static_cast<unsigned long>(value)))) \
|
|
: (1UL << (32 - __builtin_clz(static_cast<unsigned int>(value))))
|
|
|
|
#endif // _BIONIC_MACROS_H_
|