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44 lines
1.3 KiB
44 lines
1.3 KiB
/* |
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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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