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8d9cde7d0d
MozReview-Commit-ID: AqpNf9pDzrg --HG-- extra : rebase_source : d7c67ec8564345f6b851691f4e3dee666dd025b1
44 lines
1.3 KiB
C++
44 lines
1.3 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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#ifndef ThreadResponsiveness_h
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#define ThreadResponsiveness_h
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#include "nsISupports.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/TimeStamp.h"
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class CheckResponsivenessTask;
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class nsIEventTarget;
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// This class should only be used for the main thread.
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class ThreadResponsiveness {
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public:
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explicit ThreadResponsiveness(nsIEventTarget* aThread, bool aIsMainThread);
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~ThreadResponsiveness();
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void Update();
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// The number of milliseconds that elapsed since the last
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// CheckResponsivenessTask was processed.
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double GetUnresponsiveDuration(double aStartToNow_ms) const {
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return aStartToNow_ms - *mStartToPrevTracer_ms;
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}
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bool HasData() const {
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return mStartToPrevTracer_ms.isSome();
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}
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private:
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RefPtr<CheckResponsivenessTask> mActiveTracerEvent;
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// The time at which the last CheckResponsivenessTask was processed, in
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// milliseconds since process start (i.e. what you get from profiler_time()).
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mozilla::Maybe<double> mStartToPrevTracer_ms;
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};
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#endif
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