| // Copyright 2021 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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. |
| |
| // Configuration macros for the function module. |
| #pragma once |
| |
| #include <cstddef> |
| |
| // The maximum size of a callable that can be inlined within a function. This is |
| // also the size of the Function object itself. Callables larger than this are |
| // stored externally to the function. |
| // |
| // This defaults to 1 pointer, which is capable of storing common callables |
| // such as function pointers and lambdas with a single capture. |
| #ifndef PW_FUNCTION_INLINE_CALLABLE_SIZE |
| #define PW_FUNCTION_INLINE_CALLABLE_SIZE (sizeof(void*)) |
| #endif // PW_FUNCTION_INLINE_CALLABLE_SIZE |
| |
| static_assert(PW_FUNCTION_INLINE_CALLABLE_SIZE > 0 && |
| PW_FUNCTION_INLINE_CALLABLE_SIZE % alignof(void*) == 0); |
| |
| // Whether functions should allocate memory dynamically (using operator new) if |
| // a callable is larger than the inline size. |
| #ifndef PW_FUNCTION_ENABLE_DYNAMIC_ALLOCATION |
| #define PW_FUNCTION_ENABLE_DYNAMIC_ALLOCATION 0 |
| #endif // PW_FUNCTION_ENABLE_DYNAMIC_ALLOCATION |
| |
| namespace pw::function_internal::config { |
| |
| inline constexpr size_t kInlineCallableSize = PW_FUNCTION_INLINE_CALLABLE_SIZE; |
| inline constexpr bool kEnableDynamicAllocation = |
| PW_FUNCTION_ENABLE_DYNAMIC_ALLOCATION; |
| |
| } // namespace pw::function_internal::config |
