| // 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 <chrono> |
| |
| #include "pw_chrono/epoch.h" |
| |
| namespace pw::chrono::backend { |
| |
| // Provide the native std::chrono::steady_clock period. |
| using SystemClockPeriodSecondsRatio = std::chrono::steady_clock::period; |
| |
| // The std::chrono::steady_clock does not have a defined epoch. |
| constexpr inline Epoch kSystemClockEpoch = pw::chrono::Epoch::kUnknown; |
| |
| // The std::chrono::steady_clock can be used by signal handlers. |
| constexpr inline bool kSystemClockNmiSafe = true; |
| |
| // The std::chrono::steady_clock ticks while in a signal handler. |
| constexpr inline bool kSystemClockFreeRunning = true; |
| |
| } // namespace pw::chrono::backend |
