platform_system_core/include/cutils/compiler.h

33 lines
1.1 KiB
C

/*
* Copyright (C) 2009 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 ANDROID_CUTILS_COMPILER_H
#define ANDROID_CUTILS_COMPILER_H
/*
* helps the compiler's optimizer predicting branches
*/
#ifdef __cplusplus
# define CC_LIKELY( exp ) (__builtin_expect( !!(exp), true ))
# define CC_UNLIKELY( exp ) (__builtin_expect( !!(exp), false ))
#else
# define CC_LIKELY( exp ) (__builtin_expect( !!(exp), 1 ))
# define CC_UNLIKELY( exp ) (__builtin_expect( !!(exp), 0 ))
#endif
#endif // ANDROID_CUTILS_COMPILER_H