DevTools: Support asynchronous call stacks on backend.

Source/bindings/v8/ScriptDebugServer.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:
  *
  *     * 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 62 matching lines @@
     void setPauseOnNextStatement(bool pause);
     bool canBreakProgram();
     void breakProgram();
     void continueProgram();
     void stepIntoStatement();
     void stepOverStatement(const ScriptValue& frame);
     void stepOutOfFunction(const ScriptValue& frame);
 
     bool setScriptSource(const String& sourceID, const String& newContent, bool preview, String* error, RefPtr<TypeBuilder::Debugger::SetScriptSourceError>&, ScriptValue* newCallFrames, ScriptObject* result);
     void updateCallStack(ScriptValue* callFrame);
+    bool requestAsyncCallFrames();

[yurys, 2013/12/03 13:41:08]

It should be requestCallStack, from the ScriptDebugServer's stand point I don't
see why the call stack is async.

[aandrey, 2013/12/04 12:45:47]

Done.

 
     class Task {
     public:
         virtual ~Task() { }
         virtual void run() = 0;
     };
     static void interruptAndRun(PassOwnPtr<Task>, v8::Isolate*);
     void runPendingTasks();
 
     bool isPaused();
@@ skipping 10 matching lines @@
     virtual void setPreprocessorSource(const String&) { }
     virtual void preprocessBeforeCompile(const v8::Debug::EventDetails&) { }
     virtual PassOwnPtr<ScriptSourceCode> preprocess(Frame*, const ScriptSourceCode&);
     virtual String preprocessEventListener(Frame*, const String& source, const String& url, const String& functionName);
 
 protected:
     explicit ScriptDebugServer(v8::Isolate*);
     virtual ~ScriptDebugServer();
 
     ScriptValue currentCallFrame();
+    ScriptValue currentCallFrame(v8::Handle<v8::Object> executionState, v8::Handle<v8::Context> pausedContext);
 
     virtual ScriptDebugListener* getDebugListenerForContext(v8::Handle<v8::Context>) = 0;
     virtual void runMessageLoopOnPause(v8::Handle<v8::Context>) = 0;
     virtual void quitMessageLoopOnPause() = 0;
 
     static void breakProgramCallback(const v8::FunctionCallbackInfo<v8::Value>&);
     void handleProgramBreak(v8::Handle<v8::Object> executionState, v8::Handle<v8::Value> exception, v8::Handle<v8::Array> hitBreakpoints);
     void handleProgramBreak(const v8::Debug::EventDetails&, v8::Handle<v8::Value> exception, v8::Handle<v8::Array> hitBreakpointNumbers);
 
+    static void asyncCallFramesCallback(const v8::FunctionCallbackInfo<v8::Value>&);
+    void handleAsyncCallFrames(v8::Handle<v8::Object> executionState);
+
     static void v8DebugEventCallback(const v8::Debug::EventDetails& eventDetails);
     void handleV8DebugEvent(const v8::Debug::EventDetails& eventDetails);
 
     void dispatchDidParseSource(ScriptDebugListener* listener, v8::Handle<v8::Object> sourceObject);
 
     void ensureDebuggerScriptCompiled();
 
     PauseOnExceptionsState m_pauseOnExceptionsState;
     ScopedPersistent<v8::Object> m_debuggerScript;
     ScopedPersistent<v8::Object> m_executionState;
     v8::Handle<v8::Context> m_pausedContext;
     bool m_breakpointsActivated;
     ScopedPersistent<v8::FunctionTemplate> m_breakProgramCallbackTemplate;
+    ScopedPersistent<v8::FunctionTemplate> m_asyncCallFramesCallbackTemplate;
     HashMap<String, OwnPtr<ScopedPersistent<v8::Script> > > m_compiledScripts;
     v8::Isolate* m_isolate;
 
 private:
     void stepCommandWithFrame(const char* functionName, const ScriptValue& frame);
     PassRefPtr<JavaScriptCallFrame> wrapCallFrames(v8::Handle<v8::Object> executionState, int maximumLimit);
     bool executeSkipPauseRequest(ScriptDebugListener::SkipPauseRequest, v8::Handle<v8::Object> executionState);
 
     bool m_runningNestedMessageLoop;
 };
 
 } // namespace WebCore
 
 
 #endif // ScriptDebugServer_h