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29 #ifndef JSCallbackData_h
30 #define JSCallbackData_h
32 #include "JSDOMBinding.h"
33 #include "JSDOMGlobalObject.h"
34 #include "ScriptExecutionContext.h"
35 #include <heap/Strong.h>
36 #include <runtime/JSObject.h>
37 #include <wtf/Threading.h>
41 // We have to clean up this data on the context thread because unprotecting a
42 // JSObject on the wrong thread without synchronization would corrupt the heap
43 // (and synchronization would be slow).
45 class JSCallbackData {
47 static void deleteData(void*);
49 JSCallbackData(JSC::JSObject* callback, JSDOMGlobalObject* globalObject)
50 : m_callback(globalObject->globalData(), callback)
51 , m_globalObject(globalObject->globalData(), globalObject)
53 , m_thread(currentThread())
60 ASSERT(m_thread == currentThread());
63 JSC::JSObject* callback() { return m_callback.get(); }
64 JSDOMGlobalObject* globalObject() { return m_globalObject.get(); }
66 JSC::JSValue invokeCallback(JSC::MarkedArgumentBuffer&, bool* raisedException = 0);
69 JSC::Strong<JSC::JSObject> m_callback;
70 JSC::Strong<JSDOMGlobalObject> m_globalObject;
72 ThreadIdentifier m_thread;
76 class DeleteCallbackDataTask : public ScriptExecutionContext::Task {
78 static PassOwnPtr<DeleteCallbackDataTask> create(JSCallbackData* data)
80 return adoptPtr(new DeleteCallbackDataTask(data));
83 virtual void performTask(ScriptExecutionContext*)
87 virtual bool isCleanupTask() const { return true; }
90 DeleteCallbackDataTask(JSCallbackData* data) : m_data(data) {}
92 JSCallbackData* m_data;
95 } // namespace WebCore
97 #endif // JSCallbackData_h