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 55 matching lines @@
 
 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 771 matching lines @@
     , 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