| // Copyright 2020 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. |
| #pragma once |
| |
| #include <condition_variable> |
| #include <limits> |
| #include <mutex> |
| |
| namespace pw::sync::backend { |
| |
| struct NativeCountingSemaphore { |
| std::mutex mutex; |
| std::condition_variable_any condition; |
| ptrdiff_t count; |
| }; |
| using NativeCountingSemaphoreHandle = NativeCountingSemaphore&; |
| |
| inline constexpr ptrdiff_t kCountingSemaphoreMaxValue = |
| std::numeric_limits<ptrdiff_t>::max(); |
| |
| } // namespace pw::sync::backend |
