/* * 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: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 JSMainThreadExecState_h #define JSMainThreadExecState_h #include "JSDOMBinding.h" #ifndef NDEBUG #include <wtf/MainThread.h> #endif namespace WebCore { class JSMainThreadExecState { WTF_MAKE_NONCOPYABLE(JSMainThreadExecState); public: static JSC::ExecState* currentState() { ASSERT(WTF::isMainThread()); return s_mainThreadState; }; static JSC::JSValue call(JSC::ExecState* exec, JSC::JSValue functionObject, JSC::CallType callType, const JSC::CallData& callData, JSC::JSValue thisValue, const JSC::ArgList& args) { JSMainThreadExecState currentState(exec); return JSC::call(exec, functionObject, callType, callData, thisValue, args); }; static JSC::Completion evaluate(JSC::ExecState* exec, JSC::ScopeChainNode* chain, const JSC::SourceCode& source, JSC::JSValue thisValue) { JSMainThreadExecState currentState(exec); return JSC::evaluate(exec, chain, source, thisValue); }; protected: explicit JSMainThreadExecState(JSC::ExecState* exec) : m_previousState(s_mainThreadState) { ASSERT(WTF::isMainThread()); s_mainThreadState = exec; }; ~JSMainThreadExecState() { ASSERT(WTF::isMainThread()); s_mainThreadState = m_previousState; } private: static JSC::ExecState* s_mainThreadState; JSC::ExecState* m_previousState; }; // Null state prevents origin security checks. class JSMainThreadNullState : private JSMainThreadExecState { public: explicit JSMainThreadNullState() : JSMainThreadExecState(0) {}; }; } // namespace WebCore #endif // JSMainThreadExecState_h