| /* |
| * Copyright (C) 2007, 2008, 2009 Apple 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. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE 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 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 JSCallbackData_h |
| #define JSCallbackData_h |
| |
| #include "JSDOMBinding.h" |
| #include "JSDOMGlobalObject.h" |
| #include "ScriptExecutionContext.h" |
| #include <heap/Strong.h> |
| #include <runtime/JSObject.h> |
| #include <wtf/Threading.h> |
| |
| namespace WebCore { |
| |
| // We have to clean up this data on the context thread because unprotecting a |
| // JSObject on the wrong thread without synchronization would corrupt the heap |
| // (and synchronization would be slow). |
| |
| class JSCallbackData { |
| public: |
| static void deleteData(void*); |
| |
| JSCallbackData(JSC::JSObject* callback, JSDOMGlobalObject* globalObject) |
| : m_callback(globalObject->globalData(), callback) |
| , m_globalObject(globalObject->globalData(), globalObject) |
| #ifndef NDEBUG |
| , m_thread(currentThread()) |
| #endif |
| { |
| } |
| |
| ~JSCallbackData() |
| { |
| ASSERT(m_thread == currentThread()); |
| } |
| |
| JSC::JSObject* callback() { return m_callback.get(); } |
| JSDOMGlobalObject* globalObject() { return m_globalObject.get(); } |
| |
| JSC::JSValue invokeCallback(JSC::MarkedArgumentBuffer&, bool* raisedException = 0); |
| |
| private: |
| JSC::Strong<JSC::JSObject> m_callback; |
| JSC::Strong<JSDOMGlobalObject> m_globalObject; |
| #ifndef NDEBUG |
| ThreadIdentifier m_thread; |
| #endif |
| }; |
| |
| class DeleteCallbackDataTask : public ScriptExecutionContext::Task { |
| public: |
| static PassOwnPtr<DeleteCallbackDataTask> create(JSCallbackData* data) |
| { |
| return new DeleteCallbackDataTask(data); |
| } |
| |
| virtual void performTask(ScriptExecutionContext*) |
| { |
| delete m_data; |
| } |
| virtual bool isCleanupTask() const { return true; } |
| private: |
| |
| DeleteCallbackDataTask(JSCallbackData* data) : m_data(data) {} |
| |
| JSCallbackData* m_data; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // JSCallbackData_h |