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Diffstat (limited to 'src/3rdparty/webkit/WebCore/bindings/js/JSCallbackData.h')
-rw-r--r-- | src/3rdparty/webkit/WebCore/bindings/js/JSCallbackData.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/bindings/js/JSCallbackData.h b/src/3rdparty/webkit/WebCore/bindings/js/JSCallbackData.h new file mode 100644 index 0000000000..5c867019c1 --- /dev/null +++ b/src/3rdparty/webkit/WebCore/bindings/js/JSCallbackData.h @@ -0,0 +1,73 @@ +/* + * 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 <runtime/JSObject.h> +#include <runtime/Protect.h> +#include <wtf/Threading.h> + +namespace WebCore { + +// We have to clean up this data on the main thread because unprotecting a +// JSObject on a non-main 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(callback) + , m_globalObject(globalObject) + , m_isolatedWorld(currentWorld(globalObject->globalExec())) + { + } + + ~JSCallbackData() + { + ASSERT(isMainThread()); + } + + JSC::JSObject* callback() { return m_callback.get(); } + JSDOMGlobalObject* globalObject() { return m_globalObject.get(); } + + JSC::JSValue invokeCallback(JSC::MarkedArgumentBuffer&, bool* raisedException = 0); + +private: + JSC::ProtectedPtr<JSC::JSObject> m_callback; + JSC::ProtectedPtr<JSDOMGlobalObject> m_globalObject; + RefPtr<DOMWrapperWorld> m_isolatedWorld; +}; + +} // namespace WebCore + +#endif // JSCallbackData_h |