| 1 | /* |
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| 2 | * Copyright (C) 2022 The Android Open Source Project |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | |
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| 17 | #ifndef INCLUDE_PERFETTO_PUBLIC_COMPILER_H_ |
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| 18 | #define INCLUDE_PERFETTO_PUBLIC_COMPILER_H_ |
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| 19 | |
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| 20 | #if defined(__GNUC__) || defined(__clang__) |
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| 21 | #define PERFETTO_LIKELY(_x) __builtin_expect(!!(_x), 1) |
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| 22 | #define PERFETTO_UNLIKELY(_x) __builtin_expect(!!(_x), 0) |
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| 23 | #else |
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| 24 | #define PERFETTO_LIKELY(_x) (_x) |
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| 25 | #define PERFETTO_UNLIKELY(_x) (_x) |
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| 26 | #endif |
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| 27 | |
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| 28 | // PERFETTO_STATIC_CAST(TYPE, VAL): avoids the -Wold-style-cast warning when |
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| 29 | // writing code that needs to be compiled as C and C++. |
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| 30 | #ifdef __cplusplus |
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| 31 | #define PERFETTO_STATIC_CAST(TYPE, VAL) static_cast<TYPE>(VAL) |
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| 32 | #else |
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| 33 | #define PERFETTO_STATIC_CAST(TYPE, VAL) ((TYPE)(VAL)) |
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| 34 | #endif |
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| 35 | |
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| 36 | #endif // INCLUDE_PERFETTO_PUBLIC_COMPILER_H_ |
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| 37 | |
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