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883849ee32
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-type f \
\( -iname "*.cpp" \
-o -iname "*.h" \
-o -iname "*.c" \
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}
convert MOZ_OVERRIDE override
convert MOZ_FINAL final
117 lines
2.9 KiB
C++
117 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ThreadResponsiveness.h"
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#include "platform.h"
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#include "nsComponentManagerUtils.h"
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#include "nsThreadUtils.h"
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#include "nsITimer.h"
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#include "mozilla/Monitor.h"
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#include "ProfileEntry.h"
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using mozilla::Monitor;
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using mozilla::MonitorAutoLock;
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using mozilla::TimeStamp;
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class CheckResponsivenessTask : public nsRunnable,
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public nsITimerCallback {
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public:
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CheckResponsivenessTask()
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: mLastTracerTime(TimeStamp::Now())
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, mMonitor("CheckResponsivenessTask")
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, mTimer(nullptr)
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, mStop(false)
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{
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MOZ_COUNT_CTOR(CheckResponsivenessTask);
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}
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protected:
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~CheckResponsivenessTask()
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{
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MOZ_COUNT_DTOR(CheckResponsivenessTask);
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}
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public:
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NS_IMETHOD Run() override
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{
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MonitorAutoLock mon(mMonitor);
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if (mStop)
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return NS_OK;
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// This is raced on because we might pause the thread here
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// for profiling so if we tried to use a monitor to protect
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// mLastTracerTime we could deadlock. We're risking seeing
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// a partial write which will show up as an outlier in our
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// performance data.
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mLastTracerTime = TimeStamp::Now();
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if (!mTimer) {
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mTimer = do_CreateInstance("@mozilla.org/timer;1");
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}
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mTimer->InitWithCallback(this, 16, nsITimer::TYPE_ONE_SHOT);
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return NS_OK;
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}
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NS_IMETHODIMP Notify(nsITimer* aTimer) final
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{
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NS_DispatchToMainThread(this);
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return NS_OK;
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}
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void Terminate() {
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MonitorAutoLock mon(mMonitor);
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mStop = true;
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}
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const TimeStamp& GetLastTracerTime() const {
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return mLastTracerTime;
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}
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NS_DECL_ISUPPORTS_INHERITED
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private:
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TimeStamp mLastTracerTime;
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Monitor mMonitor;
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nsCOMPtr<nsITimer> mTimer;
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bool mStop;
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};
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NS_IMPL_ISUPPORTS_INHERITED(CheckResponsivenessTask, nsRunnable, nsITimerCallback)
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ThreadResponsiveness::ThreadResponsiveness(ThreadProfile *aThreadProfile)
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: mThreadProfile(aThreadProfile)
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, mActiveTracerEvent(nullptr)
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{
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MOZ_COUNT_CTOR(ThreadResponsiveness);
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}
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ThreadResponsiveness::~ThreadResponsiveness()
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{
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MOZ_COUNT_DTOR(ThreadResponsiveness);
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if (mActiveTracerEvent) {
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mActiveTracerEvent->Terminate();
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}
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}
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void
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ThreadResponsiveness::Update()
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{
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if (!mActiveTracerEvent) {
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if (mThreadProfile->GetThreadInfo()->IsMainThread()) {
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mActiveTracerEvent = new CheckResponsivenessTask();
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NS_DispatchToMainThread(mActiveTracerEvent);
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} else if (mThreadProfile->GetThreadInfo()->GetThread()) {
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mActiveTracerEvent = new CheckResponsivenessTask();
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mThreadProfile->GetThreadInfo()->
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GetThread()->Dispatch(mActiveTracerEvent, NS_DISPATCH_NORMAL);
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}
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}
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if (mActiveTracerEvent) {
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mLastTracerTime = mActiveTracerEvent->GetLastTracerTime();
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}
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}
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