Move webaudio to oilpan

Source/modules/webaudio/AudioContext.h

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 11 matching lines @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef AudioContext_h
 #define AudioContext_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventListener.h"
 #include "core/events/EventTarget.h"
-#include "platform/audio/AudioBus.h"
 #include "modules/webaudio/AsyncAudioDecoder.h"
 #include "modules/webaudio/AudioDestinationNode.h"
+#include "platform/audio/AudioBus.h"
+#include "platform/heap/Handle.h"
 #include "wtf/HashSet.h"
 #include "wtf/MainThread.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 #include "wtf/ThreadSafeRefCounted.h"
 #include "wtf/Threading.h"
 #include "wtf/Vector.h"
 #include "wtf/text/AtomicStringHash.h"
@@ skipping 21 matching lines @@
 class MediaStreamAudioSourceNode;
 class OscillatorNode;
 class PannerNode;
 class PeriodicWave;
 class ScriptProcessorNode;
 class WaveShaperNode;
 
 // AudioContext is the cornerstone of the web audio API and all AudioNodes are created from it.
 // For thread safety between the audio thread and the main thread, it has a rendering graph locking mechanism.
 
-class AudioContext : public ActiveDOMObject, public ScriptWrappable, public ThreadSafeRefCounted<AudioContext>, public EventTargetWithInlineData {
-    DEFINE_EVENT_TARGET_REFCOUNTING(ThreadSafeRefCounted<AudioContext>);
+class AudioContext : public ThreadSafeRefCountedWillBeThreadSafeRefCountedGarbageCollected<AudioContext>, public ActiveDOMObject, public ScriptWrappable, public EventTargetWithInlineData {
+    DEFINE_EVENT_TARGET_REFCOUNTING(ThreadSafeRefCountedWillBeThreadSafeRefCountedGarbageCollected<AudioContext>);
 public:
     // Create an AudioContext for rendering to the audio hardware.
-    static PassRefPtr<AudioContext> create(Document&, ExceptionState&);
+    static PassRefPtrWillBeRawPtr<AudioContext> create(Document&, ExceptionState&);
 
     virtual ~AudioContext();
 
+    virtual void trace(Visitor*);
+
     bool isInitialized() const;
     // The constructor of an AudioNode must call this to initialize the context.
     void lazyInitialize();
 
     bool isOfflineContext() { return m_isOfflineContext; }
 
     // Document notification
     virtual void stop() OVERRIDE FINAL;
     virtual bool hasPendingActivity() const OVERRIDE;
 
     AudioDestinationNode* destination() { return m_destinationNode.get(); }
     size_t currentSampleFrame() const { return m_destinationNode->currentSampleFrame(); }
     double currentTime() const { return m_destinationNode->currentTime(); }
     float sampleRate() const { return m_destinationNode->sampleRate(); }
 
-    PassRefPtr<AudioBuffer> createBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&);
+    PassRefPtrWillBeRawPtr<AudioBuffer> createBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&);
 
     // Asynchronous audio file data decoding.
     void decodeAudioData(ArrayBuffer*, PassOwnPtr<AudioBufferCallback>, PassOwnPtr<AudioBufferCallback>, ExceptionState&);
 
     AudioListener* listener() { return m_listener.get(); }
 
     // The AudioNode create methods are called on the main thread (from JavaScript).
-    PassRefPtr<AudioBufferSourceNode> createBufferSource();
-    PassRefPtr<MediaElementAudioSourceNode> createMediaElementSource(HTMLMediaElement*, ExceptionState&);
-    PassRefPtr<MediaStreamAudioSourceNode> createMediaStreamSource(MediaStream*, ExceptionState&);
-    PassRefPtr<MediaStreamAudioDestinationNode> createMediaStreamDestination();
-    PassRefPtr<GainNode> createGain();
-    PassRefPtr<BiquadFilterNode> createBiquadFilter();
-    PassRefPtr<WaveShaperNode> createWaveShaper();
-    PassRefPtr<DelayNode> createDelay(ExceptionState&);
-    PassRefPtr<DelayNode> createDelay(double maxDelayTime, ExceptionState&);
-    PassRefPtr<PannerNode> createPanner();
-    PassRefPtr<ConvolverNode> createConvolver();
-    PassRefPtr<DynamicsCompressorNode> createDynamicsCompressor();
-    PassRefPtr<AnalyserNode> createAnalyser();
-    PassRefPtr<ScriptProcessorNode> createScriptProcessor(ExceptionState&);
-    PassRefPtr<ScriptProcessorNode> createScriptProcessor(size_t bufferSize, ExceptionState&);
-    PassRefPtr<ScriptProcessorNode> createScriptProcessor(size_t bufferSize, size_t numberOfInputChannels, ExceptionState&);
-    PassRefPtr<ScriptProcessorNode> createScriptProcessor(size_t bufferSize, size_t numberOfInputChannels, size_t numberOfOutputChannels, ExceptionState&);
-    PassRefPtr<ChannelSplitterNode> createChannelSplitter(ExceptionState&);
-    PassRefPtr<ChannelSplitterNode> createChannelSplitter(size_t numberOfOutputs, ExceptionState&);
-    PassRefPtr<ChannelMergerNode> createChannelMerger(ExceptionState&);
-    PassRefPtr<ChannelMergerNode> createChannelMerger(size_t numberOfInputs, ExceptionState&);
-    PassRefPtr<OscillatorNode> createOscillator();
-    PassRefPtr<PeriodicWave> createPeriodicWave(Float32Array* real, Float32Array* imag, ExceptionState&);
+    PassRefPtrWillBeRawPtr<AudioBufferSourceNode> createBufferSource();
+    PassRefPtrWillBeRawPtr<MediaElementAudioSourceNode> createMediaElementSource(HTMLMediaElement*, ExceptionState&);
+    PassRefPtrWillBeRawPtr<MediaStreamAudioSourceNode> createMediaStreamSource(MediaStream*, ExceptionState&);
+    PassRefPtrWillBeRawPtr<MediaStreamAudioDestinationNode> createMediaStreamDestination();
+    PassRefPtrWillBeRawPtr<GainNode> createGain();
+    PassRefPtrWillBeRawPtr<BiquadFilterNode> createBiquadFilter();
+    PassRefPtrWillBeRawPtr<WaveShaperNode> createWaveShaper();
+    PassRefPtrWillBeRawPtr<DelayNode> createDelay(ExceptionState&);
+    PassRefPtrWillBeRawPtr<DelayNode> createDelay(double maxDelayTime, ExceptionState&);
+    PassRefPtrWillBeRawPtr<PannerNode> createPanner();
+    PassRefPtrWillBeRawPtr<ConvolverNode> createConvolver();
+    PassRefPtrWillBeRawPtr<DynamicsCompressorNode> createDynamicsCompressor();
+    PassRefPtrWillBeRawPtr<AnalyserNode> createAnalyser();
+    PassRefPtrWillBeRawPtr<ScriptProcessorNode> createScriptProcessor(ExceptionState&);
+    PassRefPtrWillBeRawPtr<ScriptProcessorNode> createScriptProcessor(size_t bufferSize, ExceptionState&);
+    PassRefPtrWillBeRawPtr<ScriptProcessorNode> createScriptProcessor(size_t bufferSize, size_t numberOfInputChannels, ExceptionState&);
+    PassRefPtrWillBeRawPtr<ScriptProcessorNode> createScriptProcessor(size_t bufferSize, size_t numberOfInputChannels, size_t numberOfOutputChannels, ExceptionState&);
+    PassRefPtrWillBeRawPtr<ChannelSplitterNode> createChannelSplitter(ExceptionState&);
+    PassRefPtrWillBeRawPtr<ChannelSplitterNode> createChannelSplitter(size_t numberOfOutputs, ExceptionState&);
+    PassRefPtrWillBeRawPtr<ChannelMergerNode> createChannelMerger(ExceptionState&);
+    PassRefPtrWillBeRawPtr<ChannelMergerNode> createChannelMerger(size_t numberOfInputs, ExceptionState&);
+    PassRefPtrWillBeRawPtr<OscillatorNode> createOscillator();
+    PassRefPtrWillBeRawPtr<PeriodicWave> createPeriodicWave(Float32Array* real, Float32Array* imag, ExceptionState&);
 
     // When a source node has no more processing to do (has finished playing), then it tells the context to dereference it.
     void notifyNodeFinishedProcessing(AudioNode*);
 
     // Called at the start of each render quantum.
     void handlePreRenderTasks();
 
     // Called at the end of each render quantum.
     void handlePostRenderTasks();
 
@@ skipping 119 matching lines @@
     // In turn, these nodes reference all nodes they're connected to.  All nodes are ultimately connected to the AudioDestinationNode.
     // When the context dereferences a source node, it will be deactivated from the rendering graph along with all other nodes it is
     // uniquely connected to.  See the AudioNode::ref() and AudioNode::deref() methods for more details.
     void refNode(AudioNode*);
     void derefNode(AudioNode*);
 
     // When the context goes away, there might still be some sources which haven't finished playing.
     // Make sure to dereference them here.
     void derefUnfinishedSourceNodes();
 
-    RefPtr<AudioDestinationNode> m_destinationNode;
-    RefPtr<AudioListener> m_listener;
+    RefPtrWillBeMember<AudioDestinationNode> m_destinationNode;
+    RefPtrWillBeMember<AudioListener> m_listener;
 
     // Only accessed in the audio thread.
     Vector<AudioNode*> m_finishedNodes;
 
     // We don't use RefPtr<AudioNode> here because AudioNode has a more complex ref() / deref() implementation
     // with an optional argument for refType.  We need to use the special refType: RefTypeConnection
     // Either accessed when the graph lock is held, or on the main thread when the audio thread has finished.
     Vector<AudioNode*> m_referencedNodes;
 
     // Accumulate nodes which need to be deleted here.
     // This is copied to m_nodesToDelete at the end of a render cycle in handlePostRenderTasks(), where we're assured of a stable graph
     // state which will have no references to any of the nodes in m_nodesToDelete once the context lock is released
     // (when handlePostRenderTasks() has completed).
     Vector<AudioNode*> m_nodesMarkedForDeletion;
 
     // They will be scheduled for deletion (on the main thread) at the end of a render cycle (in realtime thread).
     Vector<AudioNode*> m_nodesToDelete;
     bool m_isDeletionScheduled;
 
     // Only accessed when the graph lock is held.
-    HashSet<AudioSummingJunction*> m_dirtySummingJunctions;
+    HashSet<AudioSummingJunction* > m_dirtySummingJunctions;

[haraken, 2014/05/07 04:02:16]

This is mis-edit.

It looks safe to use raw pointers here because m_dirtySummingJunctions is
explicitly cleared when the AudioSummingJunction is destructed. Let's move
AudioSummingJunction to the heap in a follow-up CL.

[keishi, 2014/05/07 07:59:24]

Done.

     HashSet<AudioNodeOutput*> m_dirtyAudioNodeOutputs;

[haraken, 2014/05/07 04:02:16]

These raw pointers look safe as well, but let's move AudioNodeOutput to the heap
in a follow-up.

     void handleDirtyAudioSummingJunctions();
     void handleDirtyAudioNodeOutputs();
 
     // For the sake of thread safety, we maintain a seperate Vector of automatic pull nodes for rendering in m_renderingAutomaticPullNodes.
     // It will be copied from m_automaticPullNodes by updateAutomaticPullNodes() at the very start or end of the rendering quantum.
     HashSet<AudioNode*> m_automaticPullNodes;
     Vector<AudioNode*> m_renderingAutomaticPullNodes;
     // m_automaticPullNodesNeedUpdating keeps track if m_automaticPullNodes is modified.
     bool m_automaticPullNodesNeedUpdating;
     void updateAutomaticPullNodes();
 
     unsigned m_connectionCount;
 
     // Graph locking.
     Mutex m_contextGraphMutex;
     volatile ThreadIdentifier m_audioThread;
     volatile ThreadIdentifier m_graphOwnerThread; // if the lock is held then this is the thread which owns it, otherwise == UndefinedThreadIdentifier
 
     // Only accessed in the audio thread.
     Vector<AudioNode*> m_deferredFinishDerefList;
 
-    RefPtr<AudioBuffer> m_renderTarget;
+    RefPtrWillBeMember<AudioBuffer> m_renderTarget;
 
     bool m_isOfflineContext;
 
     AsyncAudioDecoder m_audioDecoder;
 
     // This is considering 32 is large enough for multiple channels audio.
     // It is somewhat arbitrary and could be increased if necessary.
     enum { MaxNumberOfChannels = 32 };
 };
 
 } // WebCore
 
 #endif // AudioContext_h