| /* |
| * 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 <v8.h> |
| #include <wtf/text/TextPosition.h> |
| #include <wtf/OwnPtr.h> |
| #include <wtf/Vector.h> |
| |
| namespace WebCore { |
| |
| class Event; |
| class EventTarget; |
| 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(); |
| |
| // 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, const TextPosition0& scriptStartPosition, WorkerContextExecutionState*); |
| |
| // Returns a local handle of the context. |
| v8::Local<v8::Context> context() { return v8::Local<v8::Context>::New(m_context); } |
| |
| private: |
| void initV8IfNeeded(); |
| bool 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 |