| Shahbaz Youssefi | f0dd087 | 2019-08-23 19:45:34 | [diff] [blame] | 1 | // |
| 2 | // Copyright 2019 The ANGLE Project Authors. All rights reserved. |
| 3 | // Use of this source code is governed by a BSD-style license that can be |
| 4 | // found in the LICENSE file. |
| 5 | // |
| 6 | // Timer.cpp: Implementation of a high precision timer class. |
| 7 | // |
| 8 | |
| 9 | #include "util/Timer.h" |
| 10 | |
| 11 | #include "common/system_utils.h" |
| 12 | |
| 13 | Timer::Timer() : mRunning(false), mStartTime(0), mStopTime(0) {} |
| 14 | |
| 15 | void Timer::start() |
| 16 | { |
| Lingfeng Yang | e9f9fa1 | 2021-11-10 02:13:15 | [diff] [blame] | 17 | mStartTime = angle::GetCurrentSystemTime(); |
| 18 | mStartCpuTime = angle::GetCurrentProcessCpuTime(); |
| 19 | mRunning = true; |
| Shahbaz Youssefi | f0dd087 | 2019-08-23 19:45:34 | [diff] [blame] | 20 | } |
| 21 | |
| 22 | void Timer::stop() |
| 23 | { |
| Lingfeng Yang | e9f9fa1 | 2021-11-10 02:13:15 | [diff] [blame] | 24 | mStopTime = angle::GetCurrentSystemTime(); |
| 25 | mStopCpuTime = angle::GetCurrentProcessCpuTime(); |
| 26 | mRunning = false; |
| Shahbaz Youssefi | f0dd087 | 2019-08-23 19:45:34 | [diff] [blame] | 27 | } |
| 28 | |
| Lingfeng Yang | e9f9fa1 | 2021-11-10 02:13:15 | [diff] [blame] | 29 | double Timer::getElapsedWallClockTime() const |
| Shahbaz Youssefi | f0dd087 | 2019-08-23 19:45:34 | [diff] [blame] | 30 | { |
| 31 | double endTime; |
| 32 | if (mRunning) |
| 33 | { |
| Jamie Madill | 666fcf3 | 2021-10-08 16:19:15 | [diff] [blame] | 34 | endTime = angle::GetCurrentSystemTime(); |
| Shahbaz Youssefi | f0dd087 | 2019-08-23 19:45:34 | [diff] [blame] | 35 | } |
| 36 | else |
| 37 | { |
| 38 | endTime = mStopTime; |
| 39 | } |
| 40 | |
| 41 | return endTime - mStartTime; |
| 42 | } |
| Lingfeng Yang | e9f9fa1 | 2021-11-10 02:13:15 | [diff] [blame] | 43 | |
| 44 | double Timer::getElapsedCpuTime() const |
| 45 | { |
| 46 | double endTime; |
| 47 | if (mRunning) |
| 48 | { |
| 49 | endTime = angle::GetCurrentProcessCpuTime(); |
| 50 | } |
| 51 | else |
| 52 | { |
| 53 | endTime = mStopCpuTime; |
| 54 | } |
| 55 | |
| 56 | return endTime - mStartCpuTime; |
| 57 | } |