DevTools: Async call stacks for Promises and Object.observe.

Source/core/inspector/InspectorDebuggerAgent.cpp

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 42 matching lines @@
 
 using WebCore::TypeBuilder::Array;
 using WebCore::TypeBuilder::Debugger::BreakpointId;
 using WebCore::TypeBuilder::Debugger::CallFrame;
 using WebCore::TypeBuilder::Debugger::ExceptionDetails;
 using WebCore::TypeBuilder::Debugger::FunctionDetails;
 using WebCore::TypeBuilder::Debugger::ScriptId;
 using WebCore::TypeBuilder::Debugger::StackTrace;
 using WebCore::TypeBuilder::Runtime::RemoteObject;
 
+namespace {
+
+static const char v8AsyncTaskEventEnqueue[] = "enqueue";
+static const char v8AsyncTaskEventWillHandle[] = "willHandle";
+static const char v8AsyncTaskEventDidHandle[] = "didHandle";
+
+}
+
 namespace WebCore {
 
 namespace DebuggerAgentState {
 static const char debuggerEnabled[] = "debuggerEnabled";
 static const char javaScriptBreakpoints[] = "javaScriptBreakopints";
 static const char pauseOnExceptionsState[] = "pauseOnExceptionsState";
 static const char asyncCallStackDepth[] = "asyncCallStackDepth";
 
 // Breakpoint properties.
 static const char url[] = "url";
@@ skipping 754 matching lines @@
     if (m_asyncCallStackTracker.isEnabled())
         m_asyncCallStackTracker.willPerformExecutionContextTask(context, task);
 }
 
 void InspectorDebuggerAgent::didPerformExecutionContextTask()
 {
     if (m_asyncCallStackTracker.isEnabled())
         m_asyncCallStackTracker.didFireAsyncCall();
 }
 
+void InspectorDebuggerAgent::didReceiveV8AsyncTaskEvent(ExecutionContext* context, const String& eventType, const String& eventName, int id)
+{
+    if (!m_asyncCallStackTracker.isEnabled())
+        return;
+    if (eventType == v8AsyncTaskEventEnqueue)
+        m_asyncCallStackTracker.didEnqueueV8AsyncTask(context, eventName, id, scriptDebugServer().currentCallFramesForAsyncStack());
+    else if (eventType == v8AsyncTaskEventWillHandle)
+        m_asyncCallStackTracker.willHandleV8AsyncTask(context, eventName, id);
+    else if (eventType == v8AsyncTaskEventDidHandle)
+        m_asyncCallStackTracker.didFireAsyncCall();
+    else
+        ASSERT_NOT_REACHED();
+}
+
 void InspectorDebuggerAgent::pause(ErrorString*)
 {
     if (m_javaScriptPauseScheduled || isPaused())
         return;
     clearBreakDetails();
     m_javaScriptPauseScheduled = true;
     scriptDebugServer().setPauseOnNextStatement(true);
 }
 
 void InspectorDebuggerAgent::resume(ErrorString* errorString)
@@ skipping 515 matching lines @@
 {
     m_scripts.clear();
     m_breakpointIdToDebugServerBreakpointIds.clear();
     m_asyncCallStackTracker.clear();
     if (m_frontend)
         m_frontend->globalObjectCleared();
 }
 
 } // namespace WebCore