The Tor Browser: gfx/layers/apz/src/TaskThrottler.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8; -*- */

     2 /* vim: set sw=2 sts=2 ts=8 et tw=80 : */

     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/. */

     7 #include "TaskThrottler.h"

     9 namespace mozilla {

    10 namespace layers {

    12 TaskThrottler::TaskThrottler(const TimeStamp& aTimeStamp)

    13   : mOutstanding(false)

    14   , mQueuedTask(nullptr)

    15   , mStartTime(aTimeStamp)

    16   , mMean(1)

    17 { }

    19 void

    20 TaskThrottler::PostTask(const tracked_objects::Location& aLocation,

    21                         CancelableTask* aTask, const TimeStamp& aTimeStamp)

    22 {

    23   aTask->SetBirthPlace(aLocation);

    25   if (mOutstanding) {

    26     if (mQueuedTask) {

    27       mQueuedTask->Cancel();

    28     }

    29     mQueuedTask = aTask;

    30   } else {

    31     mStartTime = aTimeStamp;

    32     aTask->Run();

    33     delete aTask;

    34     mOutstanding = true;

    35   }

    36 }

    38 void

    39 TaskThrottler::TaskComplete(const TimeStamp& aTimeStamp)

    40 {

    41   if (!mOutstanding) {

    42     return;

    43   }

    45   mMean.insert(aTimeStamp - mStartTime);

    47   if (mQueuedTask) {

    48     mStartTime = aTimeStamp;

    49     mQueuedTask->Run();

    50     mQueuedTask = nullptr;

    51   } else {

    52     mOutstanding = false;

    53   }

    54 }

    56 TimeDuration

    57 TaskThrottler::TimeSinceLastRequest(const TimeStamp& aTimeStamp)

    58 {

    59   return aTimeStamp - mStartTime;

    60 }

    62 }

    63 }

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