| /* |
| * Copyright (C) 2022 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 INCLUDE_PERFETTO_PUBLIC_COMPILER_H_ |
| #define INCLUDE_PERFETTO_PUBLIC_COMPILER_H_ |
| |
| #include <stddef.h> |
| |
| #if defined(__GNUC__) || defined(__clang__) |
| #define PERFETTO_LIKELY(_x) __builtin_expect(!!(_x), 1) |
| #define PERFETTO_UNLIKELY(_x) __builtin_expect(!!(_x), 0) |
| #else |
| #define PERFETTO_LIKELY(_x) (_x) |
| #define PERFETTO_UNLIKELY(_x) (_x) |
| #endif |
| |
| // PERFETTO_STATIC_CAST(TYPE, VAL): avoids the -Wold-style-cast warning when |
| // writing code that needs to be compiled as C and C++. |
| #ifdef __cplusplus |
| #define PERFETTO_STATIC_CAST(TYPE, VAL) static_cast<TYPE>(VAL) |
| #else |
| #define PERFETTO_STATIC_CAST(TYPE, VAL) ((TYPE)(VAL)) |
| #endif |
| |
| // PERFETTO_REINTERPRET_CAST(TYPE, VAL): avoids the -Wold-style-cast warning |
| // when writing code that needs to be compiled as C and C++. |
| #ifdef __cplusplus |
| #define PERFETTO_REINTERPRET_CAST(TYPE, VAL) reinterpret_cast<TYPE>(VAL) |
| #else |
| #define PERFETTO_REINTERPRET_CAST(TYPE, VAL) ((TYPE)(VAL)) |
| #endif |
| |
| // PERFETTO_NULL: avoids the -Wzero-as-null-pointer-constant warning when |
| // writing code that needs to be compiled as C and C++. |
| #ifdef __cplusplus |
| #define PERFETTO_NULL nullptr |
| #else |
| #define PERFETTO_NULL NULL |
| #endif |
| |
| #endif // INCLUDE_PERFETTO_PUBLIC_COMPILER_H_ |