69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Containers/Array.h"
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#include "HAL/CriticalSection.h"
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#include "HAL/Runnable.h"
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#include "Templates/Atomic.h"
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#include "Templates/SharedPointer.h"
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#include "IMediaTicker.h"
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class FEvent;
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class IMediaTickable;
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/**
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* High frequency ticker thread.
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*/
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class FMediaTicker
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: public FRunnable
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, public IMediaTicker
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{
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public:
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/** Default constructor. */
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FMediaTicker();
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/** Virtual destructor. */
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virtual ~FMediaTicker();
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public:
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//~ FRunnable interface
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virtual bool Init() override;
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virtual uint32 Run() override;
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virtual void Stop() override;
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virtual void Exit() override;
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public:
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//~ IMediaTicker interface
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virtual void AddTickable(const TSharedRef<IMediaTickable, ESPMode::ThreadSafe>& Tickable) override;
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virtual void RemoveTickable(const TSharedRef<IMediaTickable, ESPMode::ThreadSafe>& Tickable) override;
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protected:
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/** Tick all tickables. */
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void TickTickables();
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private:
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/** Critical section for synchronizing access to high-frequency clock sinks. */
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FCriticalSection CriticalSection;
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/** Holds a flag indicating that the thread is stopping. */
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TAtomic<bool> Stopping;
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/** Collection of tickable objects. */
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TArray<TWeakPtr<IMediaTickable, ESPMode::ThreadSafe>> Tickables;
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/** Variable to avoid rellocating the Tickables array repeatedly. */
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TArray<TWeakPtr<IMediaTickable, ESPMode::ThreadSafe>> TickablesCopy;
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/** Holds an event signaling the thread to wake up. */
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FEvent* WakeupEvent;
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}; |