| // |
| // Copyright (c) 2014 The ANGLE Project 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 SAMPLE_UTIL_TIMER_H |
| #define SAMPLE_UTIL_TIMER_H |
| |
| #include "util/util_export.h" |
| |
| class ANGLE_UTIL_EXPORT 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; |
| }; |
| |
| ANGLE_UTIL_EXPORT Timer *CreateTimer(); |
| |
| #endif // SAMPLE_UTIL_TIMER_H |