DevTools: add Tracing agent on back-end

Source/core/inspector/InspectorTimelineAgent.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 28 matching lines @@
 #include "core/frame/LocalFrame.h"
 #include "core/inspector/IdentifiersFactory.h"
 #include "core/inspector/InspectorClient.h"
 #include "core/inspector/InspectorCounters.h"
 #include "core/inspector/InspectorDOMAgent.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorLayerTreeAgent.h"
 #include "core/inspector/InspectorOverlay.h"
 #include "core/inspector/InspectorPageAgent.h"
 #include "core/inspector/InspectorState.h"
+#include "core/inspector/InspectorTracingAgent.h"
 #include "core/inspector/InstrumentingAgents.h"
 #include "core/inspector/ScriptCallStack.h"
 #include "core/inspector/TimelineRecordFactory.h"
 #include "core/inspector/TraceEventDispatcher.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/page/Page.h"
 #include "core/rendering/RenderObject.h"
 #include "core/rendering/RenderView.h"
 #include "core/xml/XMLHttpRequest.h"
 #include "platform/TraceEvent.h"
 #include "platform/graphics/DeferredImageDecoder.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/network/ResourceRequest.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/DateMath.h"
 
 namespace WebCore {
 
 namespace TimelineAgentState {
 static const char enabled[] = "enabled";
 static const char started[] = "started";
 static const char startedFromProtocol[] = "startedFromProtocol";
 static const char timelineMaxCallStackDepth[] = "timelineMaxCallStackDepth";
 static const char includeCounters[] = "includeCounters";
 static const char includeGPUEvents[] = "includeGPUEvents";
 static const char bufferEvents[] = "bufferEvents";
 static const char liveEvents[] = "liveEvents";
-static const char traceEventCategoryFilter[] = "traceEventCategoryFilter";
 }
 
 // Must be kept in sync with WebInspector.TimelineModel.RecordType in TimelineModel.js
 namespace TimelineRecordType {
 static const char Program[] = "Program";
 
 static const char EventDispatch[] = "EventDispatch";
 static const char ScheduleStyleRecalculation[] = "ScheduleStyleRecalculation";
 static const char RecalculateStyles[] = "RecalculateStyles";
 static const char InvalidateLayout[] = "InvalidateLayout";
@@ skipping 206 matching lines @@
         innerStart();
     } else if (isStarted()) {
         // Timeline was started from console.timeline, it is not restored.
         // Tell front-end timline is no longer collecting.
         m_state->setBoolean(TimelineAgentState::started, false);
         bool fromConsole = true;
         m_frontend->stopped(&fromConsole);
     }
 }
 
-void InspectorTimelineAgent::enable(ErrorString*, const String* traceEventCategoryFilter)
+void InspectorTimelineAgent::enable(ErrorString*)
 {
     m_state->setBoolean(TimelineAgentState::enabled, true);
-    m_state->setString(TimelineAgentState::traceEventCategoryFilter, traceEventCategoryFilter ? *traceEventCategoryFilter : "");
 }
 
 void InspectorTimelineAgent::disable(ErrorString*)
 {
     m_state->setBoolean(TimelineAgentState::enabled, false);
 }
 
 void InspectorTimelineAgent::start(ErrorString* errorString, const int* maxCallStackDepth, const bool* bufferEvents, const String* liveEvents, const bool* includeCounters, const bool* includeGPUEvents)
 {
     if (!m_frontend)
@@ skipping 33 matching lines @@
 bool InspectorTimelineAgent::isStarted()
 {
     return m_state->getBoolean(TimelineAgentState::started);
 }
 
 void InspectorTimelineAgent::innerStart()
 {
     if (m_overlay)
         m_overlay->startedRecordingProfile();
     m_state->setBoolean(TimelineAgentState::started, true);
-    String traceEventCategoryFilter = m_state->getString(TimelineAgentState::traceEventCategoryFilter);
-    if (!traceEventCategoryFilter.isEmpty()) {
-        m_client->enableTracing(traceEventCategoryFilter);
-        m_disableTracingOnStop = true;
-    } else {
-        m_disableTracingOnStop = false;
-    }
     m_instrumentingAgents->setInspectorTimelineAgent(this);
     ScriptGCEvent::addEventListener(this);
     if (m_client) {
         TraceEventDispatcher* dispatcher = TraceEventDispatcher::instance();
         dispatcher->addListener(InstrumentationEvents::BeginFrame, TRACE_EVENT_PHASE_INSTANT, this, &InspectorTimelineAgent::onBeginImplSideFrame, m_client);
         dispatcher->addListener(InstrumentationEvents::PaintSetup, TRACE_EVENT_PHASE_BEGIN, this, &InspectorTimelineAgent::onPaintSetupBegin, m_client);
         dispatcher->addListener(InstrumentationEvents::PaintSetup, TRACE_EVENT_PHASE_END, this, &InspectorTimelineAgent::onPaintSetupEnd, m_client);
         dispatcher->addListener(InstrumentationEvents::RasterTask, TRACE_EVENT_PHASE_BEGIN, this, &InspectorTimelineAgent::onRasterTaskBegin, m_client);
         dispatcher->addListener(InstrumentationEvents::RasterTask, TRACE_EVENT_PHASE_END, this, &InspectorTimelineAgent::onRasterTaskEnd, m_client);
         dispatcher->addListener(InstrumentationEvents::Layer, TRACE_EVENT_PHASE_DELETE_OBJECT, this, &InspectorTimelineAgent::onLayerDeleted, m_client);
@@ skipping 34 matching lines @@
 
 void InspectorTimelineAgent::innerStop(bool fromConsole)
 {
     m_state->setBoolean(TimelineAgentState::started, false);
 
     if (m_client) {
         TraceEventDispatcher::instance()->removeAllListeners(this, m_client);
         if (m_state->getBoolean(TimelineAgentState::includeGPUEvents))
             m_client->stopGPUEventsRecording();
     }
-    // If we have enabled tracing, disable it now.
-    if (m_disableTracingOnStop) {
-        m_client->disableTracing();
-        m_disableTracingOnStop = false;
-    }
     m_instrumentingAgents->setInspectorTimelineAgent(0);
     ScriptGCEvent::removeEventListener(this);
 
     clearRecordStack();
     m_threadStates.clear();
     m_gpuTask.clear();
     m_layerToNodeMap.clear();
     m_pixelRefToImageInfo.clear();
     m_imageBeingPainted = 0;
     m_paintSetupStart = 0;
@@ skipping 388 matching lines @@
 void InspectorTimelineAgent::consoleTimeline(ExecutionContext* context, const String& title, NewScriptState* scriptState)
 {
     if (!m_state->getBoolean(TimelineAgentState::enabled))
         return;
 
     String message = String::format("Timeline '%s' started.", title.utf8().data());
     mainFrame()->console().addMessage(ConsoleAPIMessageSource, DebugMessageLevel, message, String(), 0, 0, nullptr, scriptState);
     m_consoleTimelines.append(title);
     if (!isStarted()) {
         innerStart();
+        if (m_tracingAgent)
+            m_tracingAgent->startFromBackend();
         bool fromConsole = true;
         m_frontend->started(&fromConsole);
     }
     appendRecord(TimelineRecordFactory::createTimeStampData(message), TimelineRecordType::TimeStamp, true, frameForExecutionContext(context));
 }
 
 void InspectorTimelineAgent::consoleTimelineEnd(ExecutionContext* context, const String& title, NewScriptState* scriptState)
 {
     if (!m_state->getBoolean(TimelineAgentState::enabled))
         return;
 
     size_t index = m_consoleTimelines.find(title);
     if (index == kNotFound) {
         String message = String::format("Timeline '%s' was not started.", title.utf8().data());
         mainFrame()->console().addMessage(ConsoleAPIMessageSource, DebugMessageLevel, message, String(), 0, 0, nullptr, scriptState);
         return;
     }
 
     String message = String::format("Timeline '%s' finished.", title.utf8().data());
     appendRecord(TimelineRecordFactory::createTimeStampData(message), TimelineRecordType::TimeStamp, true, frameForExecutionContext(context));
     m_consoleTimelines.remove(index);
     if (!m_consoleTimelines.size() && isStarted() && !m_state->getBoolean(TimelineAgentState::startedFromProtocol)) {
         unwindRecordStack();
+        if (m_tracingAgent)
+            m_tracingAgent->endFromBackend();
         innerStop(true);
     }
     mainFrame()->console().addMessage(ConsoleAPIMessageSource, DebugMessageLevel, message, String(), 0, 0, nullptr, scriptState);
 }
 
 void InspectorTimelineAgent::domContentLoadedEventFired(LocalFrame* frame)
 {
     bool isMainFrame = frame && m_pageAgent && (frame == m_pageAgent->mainFrame());
     appendRecord(TimelineRecordFactory::createMarkData(isMainFrame), TimelineRecordType::MarkDOMContent, false, frame);
     if (isMainFrame)
@@ skipping 321 matching lines @@
 }
 
 void InspectorTimelineAgent::unwindRecordStack()
 {
     while (!m_recordStack.isEmpty()) {
         TimelineRecordEntry& entry = m_recordStack.last();
         didCompleteCurrentRecord(entry.type);
     }
 }
 
-InspectorTimelineAgent::InspectorTimelineAgent(InspectorPageAgent* pageAgent, InspectorDOMAgent* domAgent, InspectorLayerTreeAgent* layerTreeAgent,
+InspectorTimelineAgent::InspectorTimelineAgent(InspectorPageAgent* pageAgent, InspectorDOMAgent* domAgent, InspectorLayerTreeAgent* layerTreeAgent, InspectorTracingAgent* tracingAgent,
     InspectorOverlay* overlay, InspectorType type, InspectorClient* client)
     : InspectorBaseAgent<InspectorTimelineAgent>("Timeline")
     , m_pageAgent(pageAgent)
     , m_domAgent(domAgent)
     , m_layerTreeAgent(layerTreeAgent)
+    , m_tracingAgent(tracingAgent)
     , m_frontend(0)
     , m_client(client)
     , m_overlay(overlay)
     , m_inspectorType(type)
     , m_id(1)
     , m_layerTreeId(0)
     , m_maxCallStackDepth(5)
     , m_platformInstrumentationClientInstalledAtStackDepth(0)
     , m_imageBeingPainted(0)
     , m_paintSetupStart(0)
     , m_styleRecalcElementCounter(0)
     , m_mayEmitFirstPaint(false)
     , m_lastProgressTimestamp(0)
-    , m_disableTracingOnStop(false)
 {
 }
 
 void InspectorTimelineAgent::appendRecord(PassRefPtr<JSONObject> data, const String& type, bool captureCallStack, LocalFrame* frame)
 {
     double ts = timestamp();
     RefPtr<TimelineEvent> record = TimelineRecordFactory::createGenericRecord(ts, captureCallStack ? m_maxCallStackDepth : 0, type, data);
     setFrameIdentifier(record.get(), frame);
     addRecordToTimeline(record.release(), ts);
 }
@@ skipping 136 matching lines @@
 
 #ifndef NDEBUG
 bool TimelineRecordStack::isOpenRecordOfType(const String& type)
 {
     return !m_stack.isEmpty() && m_stack.last().type == type;
 }
 #endif
 
 } // namespace WebCore