| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef FLUTTER_FML_TIME_CHRONO_TIMESTAMP_PROVIDER_H_ |
| #define FLUTTER_FML_TIME_CHRONO_TIMESTAMP_PROVIDER_H_ |
| |
| #include "flutter/fml/time/timestamp_provider.h" |
| |
| #include "flutter/fml/macros.h" |
| #include "flutter/fml/time/time_point.h" |
| |
| namespace fml { |
| |
| /// TimestampProvider implementation that is backed by std::chrono::steady_clock |
| /// meant to be used only in tests for `fml`. Other components needing the |
| /// current time ticks since epoch should instantiate their own time stamp |
| /// provider backed by Dart clock. |
| class ChronoTimestampProvider : TimestampProvider { |
| public: |
| static ChronoTimestampProvider& Instance() { |
| static ChronoTimestampProvider instance; |
| return instance; |
| } |
| |
| ~ChronoTimestampProvider() override; |
| |
| fml::TimePoint Now() override; |
| |
| private: |
| ChronoTimestampProvider(); |
| |
| FML_DISALLOW_COPY_AND_ASSIGN(ChronoTimestampProvider); |
| }; |
| |
| fml::TimePoint ChronoTicksSinceEpoch(); |
| |
| } // namespace fml |
| |
| #endif // FLUTTER_FML_TIME_CHRONO_TIMESTAMP_PROVIDER_H_ |