| // Copyright 2019 The Dawn 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 |
| // |
| // 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 SRC_DAWN_UTILS_TIMER_H_ |
| #define SRC_DAWN_UTILS_TIMER_H_ |
| |
| namespace utils { |
| |
| class Timer { |
| public: |
| virtual ~Timer() {} |
| |
| // Timer functionality: Use start() and stop() to record the duration and use |
| // getElapsedTime() to query that duration. If getElapsedTime() is called in between, it |
| // will report the elapsed time since start(). |
| virtual void Start() = 0; |
| virtual void Stop() = 0; |
| virtual double GetElapsedTime() const = 0; |
| |
| // Timestamp functionality: Use getAbsoluteTime() to get an absolute time with an unknown |
| // origin. This time moves forward regardless of start()/stop(). |
| virtual double GetAbsoluteTime() = 0; |
| }; |
| |
| Timer* CreateTimer(); |
| |
| } // namespace utils |
| |
| #endif // SRC_DAWN_UTILS_TIMER_H_ |