| /* |
| * Copyright (C) 2019 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_BASE_COMPILER_H_ |
| #define INCLUDE_PERFETTO_BASE_COMPILER_H_ |
| |
| #include <type_traits> |
| |
| #define PERFETTO_LIKELY(_x) __builtin_expect(!!(_x), 1) |
| #define PERFETTO_UNLIKELY(_x) __builtin_expect(!!(_x), 0) |
| |
| #if defined(__GNUC__) || defined(__clang__) |
| #define PERFETTO_WARN_UNUSED_RESULT __attribute__((warn_unused_result)) |
| #else |
| #define PERFETTO_WARN_UNUSED_RESULT |
| #endif |
| |
| #if defined(__clang__) |
| #define PERFETTO_ALWAYS_INLINE __attribute__((__always_inline__)) |
| #define PERFETTO_NO_INLINE __attribute__((__noinline__)) |
| #else |
| // GCC is too pedantic and often fails with the error: |
| // "always_inline function might not be inlinable" |
| #define PERFETTO_ALWAYS_INLINE |
| #define PERFETTO_NO_INLINE |
| #endif |
| |
| #if defined(__GNUC__) || defined(__clang__) |
| #define PERFETTO_DEBUG_FUNCTION_IDENTIFIER() __PRETTY_FUNCTION__ |
| #elif defined(_MSC_VER) |
| #define PERFETTO_DEBUG_FUNCTION_IDENTIFIER() __FUNCSIG__ |
| #else |
| #define PERFETTO_DEBUG_FUNCTION_IDENTIFIER() \ |
| static_assert(false, "Not implemented for this compiler") |
| #endif |
| |
| #if defined(__GNUC__) || defined(__clang__) |
| #define PERFETTO_PRINTF_FORMAT(x, y) \ |
| __attribute__((__format__(__printf__, x, y))) |
| #else |
| #define PERFETTO_PRINTF_FORMAT(x, y) |
| #endif |
| |
| namespace perfetto { |
| namespace base { |
| |
| template <typename... T> |
| inline void ignore_result(const T&...) {} |
| |
| } // namespace base |
| } // namespace perfetto |
| |
| #endif // INCLUDE_PERFETTO_BASE_COMPILER_H_ |