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/*
* 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 <heap/StrongInlines.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->vm(), callback)
, m_globalObject(globalObject->vm(), 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);
JSC::JSValue invokeCallback(JSC::JSValue thisValue, 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 adoptPtr(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
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