1 /* 2 * Copyright (C) 2007, 2008, 2009 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 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef JSCallbackData_h 30 #define JSCallbackData_h 31 32 #include "JSDOMBinding.h" 33 #include "JSDOMGlobalObject.h" 34 #include <runtime/JSObject.h> 35 #include <runtime/Protect.h> 36 #include <wtf/Threading.h> 37 38 namespace WebCore { 39 40 // We have to clean up this data on the main thread because unprotecting a 41 // JSObject on a non-main thread without synchronization would corrupt the heap 42 // (and synchronization would be slow). 43 44 class JSCallbackData { 45 public: 46 static void deleteData(void*); 47 48 JSCallbackData(JSC::JSObject* callback, JSDOMGlobalObject* globalObject) 49 : m_callback(callback) 50 , m_globalObject(globalObject) 51 { 52 } 53 54 ~JSCallbackData() 55 { 56 ASSERT(isMainThread()); 57 } 58 59 JSC::JSObject* callback() { return m_callback.get(); } 60 JSDOMGlobalObject* globalObject() { return m_globalObject.get(); } 61 62 JSC::JSValue invokeCallback(JSC::MarkedArgumentBuffer&, bool* raisedException = 0); 63 64 private: 65 JSC::ProtectedPtr<JSC::JSObject> m_callback; 66 JSC::ProtectedPtr<JSDOMGlobalObject> m_globalObject; 67 }; 68 69 } // namespace WebCore 70 71 #endif // JSCallbackData_h 72
