/platform/external/webkit/WebCore/bindings/v8/WorkerContextExecutionProxy.h
https://github.com/aharish/totoro-gb-opensource-update2 · C Header · 110 lines · 48 code · 24 blank · 38 comment · 0 complexity · 5828f433069dd06bb757e2bdb6e76fb2 MD5 · raw file
- /*
- * Copyright (C) 2009 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
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #ifndef WorkerContextExecutionProxy_h
- #define WorkerContextExecutionProxy_h
- #if ENABLE(WORKERS)
- #include "ScriptValue.h"
- #include "V8EventListenerList.h"
- #include "V8Index.h"
- #include <v8.h>
- #include <wtf/OwnPtr.h>
- #include <wtf/Vector.h>
- namespace WebCore {
- class Event;
- class EventTarget;
- class V8EventListener;
- class V8WorkerContextEventListener;
- class WorkerContext;
- struct WorkerContextExecutionState {
- WorkerContextExecutionState() : hadException(false), lineNumber(0) { }
- bool hadException;
- ScriptValue exception;
- String errorMessage;
- int lineNumber;
- String sourceURL;
- };
- class WorkerContextExecutionProxy {
- public:
- WorkerContextExecutionProxy(WorkerContext*);
- ~WorkerContextExecutionProxy();
- // Finds/creates event listener wrappers.
- PassRefPtr<V8EventListener> findOrCreateEventListener(v8::Local<v8::Value> listener, bool isInline, bool findOnly);
- // Track the event so that we can detach it from the JS wrapper when a worker
- // terminates. This is needed because we need to be able to dispose these
- // events and releases references to their event targets: WorkerContext.
- void trackEvent(Event*);
- // Evaluate a script file in the current execution environment.
- ScriptValue evaluate(const String& script, const String& fileName, int baseLine, WorkerContextExecutionState*);
- // Returns a local handle of the context.
- v8::Local<v8::Context> context() { return v8::Local<v8::Context>::New(m_context); }
- // Returns WorkerContext object.
- WorkerContext* workerContext() { return m_workerContext; }
- // Returns WorkerContextExecutionProxy object of the currently executing context. 0 will be returned if the current executing context is not the worker context.
- static WorkerContextExecutionProxy* retrieve();
- private:
- void initV8IfNeeded();
- void initContextIfNeeded();
- void dispose();
- // Run an already compiled script.
- v8::Local<v8::Value> runScript(v8::Handle<v8::Script>);
- static bool forgetV8EventObject(Event*);
- static const int kWorkerMaxStackSize = 500 * 1024;
- WorkerContext* m_workerContext;
- v8::Persistent<v8::Context> m_context;
- int m_recursion;
- Vector<Event*> m_events;
- };
- } // namespace WebCore
- #endif // ENABLE(WORKERS)
- #endif // WorkerContextExecutionProxy_h