18e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 2635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project * Copyright (C) 2008 Apple Inc. All Rights Reserved. 38e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 48e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Redistribution and use in source and binary forms, with or without 58e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * modification, are permitted provided that the following conditions 68e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * are met: 78e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 88e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer. 98e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * documentation and/or other materials provided with the distribution. 128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project * 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 27635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#ifndef WorkerScriptController_h 28635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#define WorkerScriptController_h 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#if ENABLE(WORKERS) 318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 322daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch#include <heap/Strong.h> 33dd8bb3de4f353a81954234999f1fea748aee2ea9Ben Murdoch#include <wtf/Forward.h> 34635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#include <wtf/Threading.h> 35635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 36635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Projectnamespace JSC { 37635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project class JSGlobalData; 38635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project} 398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 42635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project class JSWorkerContext; 43635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project class ScriptSourceCode; 44635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project class ScriptValue; 45635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project class WorkerContext; 46635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 47ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdoch class WorkerScriptController { 48ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdoch WTF_MAKE_NONCOPYABLE(WorkerScriptController); WTF_MAKE_FAST_ALLOCATED; 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project public: 50635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project WorkerScriptController(WorkerContext*); 51635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project ~WorkerScriptController(); 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 53635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project JSWorkerContext* workerContextWrapper() 54635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project { 55635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project initScriptIfNeeded(); 5681bc750723a18f21cd17d1b173cd2a4dda9cea6eBen Murdoch return m_workerContextWrapper.get(); 57635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project } 58635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 59635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project ScriptValue evaluate(const ScriptSourceCode&); 608f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian ScriptValue evaluate(const ScriptSourceCode&, ScriptValue* exception); 61635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 628f72e70a9fd78eec56623b3a62e68f16b7b27e28Feng Qian void setException(ScriptValue); 638e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 642daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // Async request to terminate a JS run execution. Eventually causes termination 652daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // exception raised during JS execution, if the worker thread happens to run JS. 662daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // After JS execution was terminated in this way, the Worker thread has to use 672daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // forbidExecution()/isExecutionForbidden() to guard against reentry into JS. 682daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // Can be called from any thread. 692daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch void scheduleExecutionTermination(); 702daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch 712daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // Called on Worker thread when JS exits with termination exception caused by forbidExecution() request, 722daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch // or by Worker thread termination code to prevent future entry into JS. 732daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch void forbidExecution(); 742daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch bool isExecutionForbidden() const; 75cac0f67c402d107cdb10971b95719e2ff9c7c76bSteve Block 76cac0f67c402d107cdb10971b95719e2ff9c7c76bSteve Block JSC::JSGlobalData* globalData() { return m_globalData.get(); } 77cac0f67c402d107cdb10971b95719e2ff9c7c76bSteve Block 788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project private: 79635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project void initScriptIfNeeded() 80635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project { 81635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project if (!m_workerContextWrapper) 82635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project initScript(); 83635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project } 84635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project void initScript(); 85635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project 86635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project RefPtr<JSC::JSGlobalData> m_globalData; 87635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project WorkerContext* m_workerContext; 882daae5fd11344eaa88a0d92b0f6d65f8d2255c00Ben Murdoch JSC::Strong<JSWorkerContext> m_workerContextWrapper; 89635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project bool m_executionForbidden; 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project }; 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} // namespace WebCore 938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif // ENABLE(WORKERS) 958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 96635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project#endif // WorkerScriptController_h 97