1 /* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 */ 26 27 #ifndef WorkerScriptController_h 28 #define WorkerScriptController_h 29 30 #if ENABLE(WORKERS) 31 32 #include <runtime/Protect.h> 33 #include <wtf/Noncopyable.h> 34 #include <wtf/Threading.h> 35 36 namespace JSC { 37 class JSGlobalData; 38 } 39 40 namespace WebCore { 41 42 class JSWorkerContext; 43 class ScriptSourceCode; 44 class ScriptValue; 45 class String; 46 class WorkerContext; 47 48 class WorkerScriptController : public Noncopyable { 49 public: 50 WorkerScriptController(WorkerContext*); 51 ~WorkerScriptController(); 52 workerContextWrapper()53 JSWorkerContext* workerContextWrapper() 54 { 55 initScriptIfNeeded(); 56 return m_workerContextWrapper; 57 } 58 59 ScriptValue evaluate(const ScriptSourceCode&); 60 ScriptValue evaluate(const ScriptSourceCode&, ScriptValue* exception); 61 62 void setException(ScriptValue); 63 64 void forbidExecution(); 65 globalData()66 JSC::JSGlobalData* globalData() { return m_globalData.get(); } 67 68 private: initScriptIfNeeded()69 void initScriptIfNeeded() 70 { 71 if (!m_workerContextWrapper) 72 initScript(); 73 } 74 void initScript(); 75 76 RefPtr<JSC::JSGlobalData> m_globalData; 77 WorkerContext* m_workerContext; 78 JSC::ProtectedPtr<JSWorkerContext> m_workerContextWrapper; 79 80 Mutex m_sharedDataMutex; 81 bool m_executionForbidden; 82 }; 83 84 } // namespace WebCore 85 86 #endif // ENABLE(WORKERS) 87 88 #endif // WorkerScriptController_h 89