44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_CUTILS_COMPILER_H
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#define ANDROID_CUTILS_COMPILER_H
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/*
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* helps the compiler's optimizer predicting branches
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*/
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#ifdef __cplusplus
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# define CC_LIKELY( exp ) (__builtin_expect( !!(exp), true ))
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# define CC_UNLIKELY( exp ) (__builtin_expect( !!(exp), false ))
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#else
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# define CC_LIKELY( exp ) (__builtin_expect( !!(exp), 1 ))
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# define CC_UNLIKELY( exp ) (__builtin_expect( !!(exp), 0 ))
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#endif
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/**
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* exports marked symbols
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*
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* if used on a C++ class declaration, this macro must be inserted
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* after the "class" keyword. For instance:
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*
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* template <typename TYPE>
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* class ANDROID_API Singleton { }
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*/
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#define ANDROID_API __attribute__((visibility("default")))
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#endif // ANDROID_CUTILS_COMPILER_H
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