DevTools: add instrumentation for deferred canvas rasterization

Source/core/inspector/TimelineTraceEventProcessor.cpp

 /*
 * Copyright (C) 2013 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
@@ skipping 135 matching lines @@
     if (!timelineAgent)
         return;
     timelineAgent->sendEvent(record);
 }
 
 TimelineTraceEventProcessor::TimelineTraceEventProcessor(WeakPtr<InspectorTimelineAgent> timelineAgent, InspectorClient *client)
     : m_timelineAgent(timelineAgent)
     , m_timeConverter(timelineAgent.get()->timeConverter())
     , m_inspectorClient(client)
     , m_pageId(reinterpret_cast<unsigned long long>(m_timelineAgent.get()->page()))
+    , m_layerTreeId(m_timelineAgent.get()->layerTreeId())
     , m_layerId(0)
     , m_paintSetupStart(0)
     , m_paintSetupEnd(0)
 {
     registerHandler(InstrumentationEvents::BeginFrame, TracePhaseInstant, &TimelineTraceEventProcessor::onBeginFrame);
+    registerHandler(InstrumentationEvents::UpdateLayer, TracePhaseBegin, &TimelineTraceEventProcessor::onUpdateLayerBegin);
+    registerHandler(InstrumentationEvents::UpdateLayer, TracePhaseEnd, &TimelineTraceEventProcessor::onUpdateLayerEnd);
     registerHandler(InstrumentationEvents::PaintSetup, TracePhaseBegin, &TimelineTraceEventProcessor::onPaintSetupBegin);
     registerHandler(InstrumentationEvents::PaintSetup, TracePhaseEnd, &TimelineTraceEventProcessor::onPaintSetupEnd);
-    registerHandler(InstrumentationEvents::PaintLayer, TracePhaseBegin, &TimelineTraceEventProcessor::onPaintLayerBegin);
-    registerHandler(InstrumentationEvents::PaintLayer, TracePhaseEnd, &TimelineTraceEventProcessor::onPaintLayerEnd);
     registerHandler(InstrumentationEvents::RasterTask, TracePhaseBegin, &TimelineTraceEventProcessor::onRasterTaskBegin);
     registerHandler(InstrumentationEvents::RasterTask, TracePhaseEnd, &TimelineTraceEventProcessor::onRasterTaskEnd);
     registerHandler(InstrumentationEvents::ImageDecodeTask, TracePhaseBegin, &TimelineTraceEventProcessor::onImageDecodeTaskBegin);
     registerHandler(InstrumentationEvents::ImageDecodeTask, TracePhaseEnd, &TimelineTraceEventProcessor::onImageDecodeTaskEnd);
     registerHandler(InstrumentationEvents::Layer, TracePhaseDeleteObject, &TimelineTraceEventProcessor::onLayerDeleted);
     registerHandler(InstrumentationEvents::Paint, TracePhaseInstant, &TimelineTraceEventProcessor::onPaint);
     registerHandler(PlatformInstrumentation::ImageDecodeEvent, TracePhaseBegin, &TimelineTraceEventProcessor::onImageDecodeBegin);
     registerHandler(PlatformInstrumentation::ImageDecodeEvent, TracePhaseEnd, &TimelineTraceEventProcessor::onImageDecodeEnd);
+    registerHandler(PlatformInstrumentation::RasterizeCanvasEvent, TracePhaseBegin, &TimelineTraceEventProcessor::onRasterizeCanvasBegin);
+    registerHandler(PlatformInstrumentation::RasterizeCanvasEvent, TracePhaseEnd, &TimelineTraceEventProcessor::onRasterizeCanvasEnd);
 
     TraceEventDispatcher::instance()->addProcessor(this, m_inspectorClient);
 }
 
 TimelineTraceEventProcessor::~TimelineTraceEventProcessor()
 {
 }
 
 void TimelineTraceEventProcessor::registerHandler(const char* name, TraceEventPhase phase, TraceEventHandler handler)
 {
@@ skipping 41 matching lines @@
         return;
     }
     (this->*(it->value))(event);
 }
 
 void TimelineTraceEventProcessor::onBeginFrame(const TraceEvent&)
 {
     processBackgroundEvents();
 }
 
+void TimelineTraceEventProcessor::onUpdateLayerBegin(const TraceEvent& event)
+{
+    unsigned long long layerTreeId = event.asUInt(InstrumentationEventArguments::LayerTreeId);
+    if (layerTreeId != m_layerTreeId)
+        return;
+    m_layerId = event.asUInt(InstrumentationEventArguments::LayerId);
+    // We don't know the node yet. For content layers, the node will be updated
+    // by paint. For others, let it remain 0 -- we just need the fact that
+    // the layer belongs to the page (see cookie check).
+    m_layerToNodeMap.add(m_layerId, 0);
+}
+
+void TimelineTraceEventProcessor::onUpdateLayerEnd(const TraceEvent& event)
+{
+    m_layerId = 0;
+}
+
 void TimelineTraceEventProcessor::onPaintSetupBegin(const TraceEvent& event)
 {
     ASSERT(!m_paintSetupStart);
     m_paintSetupStart = m_timeConverter.fromMonotonicallyIncreasingTime(event.timestamp());
 }
 
 void TimelineTraceEventProcessor::onPaintSetupEnd(const TraceEvent& event)
 {
     ASSERT(m_paintSetupStart);
     m_paintSetupEnd = m_timeConverter.fromMonotonicallyIncreasingTime(event.timestamp());
 }
 
-void TimelineTraceEventProcessor::onPaintLayerBegin(const TraceEvent& event)
-{
-    m_layerId = event.asUInt(InstrumentationEventArguments::LayerId);
-    ASSERT(m_layerId);
-}
-
-void TimelineTraceEventProcessor::onPaintLayerEnd(const TraceEvent&)
-{
-    m_layerId = 0;
-}
-
 void TimelineTraceEventProcessor::onRasterTaskBegin(const TraceEvent& event)
 {
     TimelineThreadState& state = threadState(event.threadIdentifier());
     if (!maybeEnterLayerTask(event, state))
         return;
     unsigned long long layerId = event.asUInt(InstrumentationEventArguments::LayerId);
     ASSERT(layerId);
     RefPtr<JSONObject> record = createRecord(event, TimelineRecordType::Rasterize);
     record->setObject("data", TimelineRecordFactory::createLayerData(m_layerToNodeMap.get(layerId)));
     state.recordStack.addScopedRecord(record.release());
@@ skipping 12 matching lines @@
 void TimelineTraceEventProcessor::onImageDecodeTaskBegin(const TraceEvent& event)
 {
     maybeEnterLayerTask(event, threadState(event.threadIdentifier()));
 }
 
 void TimelineTraceEventProcessor::onImageDecodeTaskEnd(const TraceEvent& event)
 {
     leaveLayerTask(threadState(event.threadIdentifier()));
 }
 
+void TimelineTraceEventProcessor::onRasterizeCanvasBegin(const TraceEvent& event)
+{
+    if (!m_layerId)
+        return;
+    InspectorTimelineAgent* timelineAgent = m_timelineAgent.get();
+    if (!timelineAgent)
+        return;
+    fprintf(stderr, "Rasterize canvas: %d\n", m_layerId);
+    timelineAgent->pushCurrentRecord(JSONObject::create(), TimelineRecordType::Rasterize, false, 0);
+}
+
+void TimelineTraceEventProcessor::onRasterizeCanvasEnd(const TraceEvent& event)
+{
+    if (!m_layerId)
+        return;
+    InspectorTimelineAgent* timelineAgent = m_timelineAgent.get();
+    if (!timelineAgent)
+        return;
+    timelineAgent->didCompleteCurrentRecord(TimelineRecordType::Rasterize);
+}
+
 bool TimelineTraceEventProcessor::maybeEnterLayerTask(const TraceEvent& event, TimelineThreadState& threadState)
 {
     unsigned long long layerId = event.asUInt(InstrumentationEventArguments::LayerId);
     if (!m_layerToNodeMap.contains(layerId))
         return false;
     ASSERT(!threadState.inKnownLayerTask);
     threadState.inKnownLayerTask = true;
     return true;
 }
 
@@ skipping 24 matching lines @@
     unsigned long long id = event.id();
     ASSERT(id);
     processBackgroundEvents();
     m_layerToNodeMap.remove(id);
 }
 
 void TimelineTraceEventProcessor::onPaint(const TraceEvent& event)
 {
     double paintSetupStart = m_paintSetupStart;
     m_paintSetupStart = 0;
-    if (!m_layerId)
-        return;
     unsigned long long pageId = event.asUInt(InstrumentationEventArguments::PageId);
     if (pageId != m_pageId)
         return;
+    ASSERT(m_layerId);
     long long nodeId = event.asInt(InstrumentationEventArguments::NodeId);
     ASSERT(nodeId);
     m_layerToNodeMap.set(m_layerId, nodeId);
     InspectorTimelineAgent* timelineAgent = m_timelineAgent.get();
     if (timelineAgent && paintSetupStart) {
         RefPtr<JSONObject> paintSetupRecord = TimelineRecordFactory::createGenericRecord(paintSetupStart, 0, TimelineRecordType::PaintSetup);
         paintSetupRecord->setNumber("endTime", m_paintSetupEnd);
         paintSetupRecord->setObject("data", TimelineRecordFactory::createLayerData(nodeId));
         timelineAgent->addRecordToTimeline(paintSetupRecord);
     }
@@ skipping 20 matching lines @@
     for (size_t i = 0, size = events.size(); i < size; ++i) {
         const TraceEvent& event = events[i];
         HandlersMap::iterator it = m_handlersByType.find(std::make_pair(event.name(), event.phase()));
         ASSERT(it != m_handlersByType.end() && it->value);
         (this->*(it->value))(event);
     }
 }
 
 } // namespace WebCore