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