Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim:set ts=2 sw=2 sts=2 et cindent: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "TimeoutBudgetManager.h"
       8             : 
       9             : #include "mozilla/dom/Timeout.h"
      10             : 
      11             : namespace mozilla {
      12             : namespace dom {
      13             : 
      14             : // Time between sampling timeout execution time.
      15             : const uint32_t kTelemetryPeriodMS = 1000;
      16             : 
      17             : /* static */ TimeoutBudgetManager&
      18           2 : TimeoutBudgetManager::Get()
      19             : {
      20           2 :   static TimeoutBudgetManager gTimeoutBudgetManager;
      21           2 :   return gTimeoutBudgetManager;
      22             : }
      23             : 
      24             : void
      25           1 : TimeoutBudgetManager::StartRecording(const TimeStamp& aNow)
      26             : {
      27           1 :   mStart = aNow;
      28           1 : }
      29             : 
      30             : void
      31           1 : TimeoutBudgetManager::StopRecording()
      32             : {
      33           1 :   mStart = TimeStamp();
      34           1 : }
      35             : 
      36             : TimeDuration
      37           1 : TimeoutBudgetManager::RecordExecution(const TimeStamp& aNow,
      38             :                                       const Timeout* aTimeout,
      39             :                                       bool aIsBackground)
      40             : {
      41           1 :   if (!mStart) {
      42             :     // If we've started a sync operation mStart might be null, in
      43             :     // which case we should not record this piece of execution.
      44           0 :     return TimeDuration();
      45             :   }
      46             : 
      47           1 :   TimeDuration duration = aNow - mStart;
      48             : 
      49           1 :   if (aIsBackground) {
      50           0 :     if (aTimeout->mIsTracking) {
      51           0 :       mTelemetryData.mBackgroundTracking += duration;
      52             :     } else {
      53           0 :       mTelemetryData.mBackgroundNonTracking += duration;
      54             :     }
      55             :   } else {
      56           1 :     if (aTimeout->mIsTracking) {
      57           0 :       mTelemetryData.mForegroundTracking += duration;
      58             :     } else {
      59           1 :       mTelemetryData.mForegroundNonTracking += duration;
      60             :     }
      61             :   }
      62             : 
      63           1 :   return duration;
      64             : }
      65             : 
      66             : void
      67           0 : TimeoutBudgetManager::Accumulate(Telemetry::HistogramID aId,
      68             :                                  const TimeDuration& aSample)
      69             : {
      70           0 :   uint32_t sample = std::round(aSample.ToMilliseconds());
      71           0 :   if (sample) {
      72           0 :     Telemetry::Accumulate(aId, sample);
      73             :   }
      74           0 : }
      75             : 
      76             : void
      77           1 : TimeoutBudgetManager::MaybeCollectTelemetry(const TimeStamp& aNow)
      78             : {
      79           1 :   if ((aNow - mLastCollection).ToMilliseconds() < kTelemetryPeriodMS) {
      80           1 :     return;
      81             :   }
      82             : 
      83           0 :   Accumulate(Telemetry::TIMEOUT_EXECUTION_FG_TRACKING_MS,
      84           0 :              mTelemetryData.mForegroundTracking);
      85           0 :   Accumulate(Telemetry::TIMEOUT_EXECUTION_FG_MS,
      86           0 :              mTelemetryData.mForegroundNonTracking);
      87           0 :   Accumulate(Telemetry::TIMEOUT_EXECUTION_BG_TRACKING_MS,
      88           0 :              mTelemetryData.mBackgroundTracking);
      89           0 :   Accumulate(Telemetry::TIMEOUT_EXECUTION_BG_MS,
      90           0 :              mTelemetryData.mBackgroundNonTracking);
      91             : 
      92           0 :   mTelemetryData = TelemetryData();
      93           0 :   mLastCollection = aNow;
      94             : }
      95             : 
      96             : } // namespace dom
      97             : } // namespace mozilla