Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 1 | // Copyright (c) 2011 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Bertrand SIMONNET | e6cfd64 | 2014-07-09 16:35:23 -0700 | [diff] [blame^] | 5 | #include "metrics/timer.h" |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 6 | |
| 7 | #include <string> |
| 8 | |
| 9 | #include <base/memory/scoped_ptr.h> |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 10 | |
Bertrand SIMONNET | e6cfd64 | 2014-07-09 16:35:23 -0700 | [diff] [blame^] | 11 | #include "metrics/metrics_library.h" |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 12 | |
| 13 | namespace chromeos_metrics { |
| 14 | |
| 15 | base::TimeTicks ClockWrapper::GetCurrentTime() const { |
| 16 | return base::TimeTicks::Now(); |
| 17 | } |
| 18 | |
| 19 | Timer::Timer() |
repo sync | 0672655 | 2013-05-28 14:19:53 -0700 | [diff] [blame] | 20 | : timer_state_(kTimerStopped), |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 21 | clock_wrapper_(new ClockWrapper()) {} |
| 22 | |
| 23 | bool Timer::Start() { |
repo sync | 0672655 | 2013-05-28 14:19:53 -0700 | [diff] [blame] | 24 | elapsed_time_ = base::TimeDelta(); // Sets elapsed_time_ to zero. |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 25 | start_time_ = clock_wrapper_->GetCurrentTime(); |
repo sync | 0672655 | 2013-05-28 14:19:53 -0700 | [diff] [blame] | 26 | timer_state_ = kTimerRunning; |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 27 | return true; |
| 28 | } |
| 29 | |
| 30 | bool Timer::Stop() { |
repo sync | 0672655 | 2013-05-28 14:19:53 -0700 | [diff] [blame] | 31 | if (timer_state_ == kTimerStopped) |
| 32 | return false; |
| 33 | if (timer_state_ == kTimerRunning) |
| 34 | elapsed_time_ += clock_wrapper_->GetCurrentTime() - start_time_; |
| 35 | timer_state_ = kTimerStopped; |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 36 | return true; |
| 37 | } |
| 38 | |
repo sync | 0672655 | 2013-05-28 14:19:53 -0700 | [diff] [blame] | 39 | bool Timer::Pause() { |
| 40 | switch (timer_state_) { |
| 41 | case kTimerStopped: |
| 42 | if (!Start()) |
| 43 | return false; |
| 44 | timer_state_ = kTimerPaused; |
| 45 | return true; |
| 46 | case kTimerRunning: |
| 47 | timer_state_ = kTimerPaused; |
| 48 | elapsed_time_ += clock_wrapper_->GetCurrentTime() - start_time_; |
| 49 | return true; |
| 50 | default: |
| 51 | return false; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | bool Timer::Resume() { |
| 56 | switch (timer_state_) { |
| 57 | case kTimerStopped: |
| 58 | return Start(); |
| 59 | case kTimerPaused: |
| 60 | start_time_ = clock_wrapper_->GetCurrentTime(); |
| 61 | timer_state_ = kTimerRunning; |
| 62 | return true; |
| 63 | default: |
| 64 | return false; |
| 65 | } |
| 66 | } |
| 67 | |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 68 | bool Timer::Reset() { |
repo sync | 0672655 | 2013-05-28 14:19:53 -0700 | [diff] [blame] | 69 | elapsed_time_ = base::TimeDelta(); // Sets elapsed_time_ to zero. |
| 70 | timer_state_ = kTimerStopped; |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 71 | return true; |
| 72 | } |
| 73 | |
| 74 | bool Timer::HasStarted() const { |
repo sync | 0672655 | 2013-05-28 14:19:53 -0700 | [diff] [blame] | 75 | return timer_state_ != kTimerStopped; |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | bool Timer::GetElapsedTime(base::TimeDelta* elapsed_time) const { |
repo sync | 0672655 | 2013-05-28 14:19:53 -0700 | [diff] [blame] | 79 | if (start_time_.is_null() || !elapsed_time) |
| 80 | return false; |
| 81 | *elapsed_time = elapsed_time_; |
| 82 | if (timer_state_ == kTimerRunning) { |
| 83 | *elapsed_time += clock_wrapper_->GetCurrentTime() - start_time_; |
Bruno Rocha | be388f3 | 2011-08-02 12:40:17 -0700 | [diff] [blame] | 84 | } |
| 85 | return true; |
| 86 | } |
| 87 | |
| 88 | // static |
| 89 | MetricsLibraryInterface* TimerReporter::metrics_lib_ = NULL; |
| 90 | |
| 91 | TimerReporter::TimerReporter(const std::string& histogram_name, int min, |
| 92 | int max, int num_buckets) |
| 93 | : histogram_name_(histogram_name), |
| 94 | min_(min), |
| 95 | max_(max), |
| 96 | num_buckets_(num_buckets) {} |
| 97 | |
| 98 | bool TimerReporter::ReportMilliseconds() const { |
| 99 | base::TimeDelta elapsed_time; |
| 100 | if (!metrics_lib_ || !GetElapsedTime(&elapsed_time)) return false; |
| 101 | return metrics_lib_->SendToUMA(histogram_name_, |
| 102 | elapsed_time.InMilliseconds(), |
| 103 | min_, |
| 104 | max_, |
| 105 | num_buckets_); |
| 106 | } |
| 107 | |
| 108 | } // namespace chromeos_metrics |