| /* |
| * 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 |