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/*
* Copyright (C) 2009 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 DOMDataStore_h
#define DOMDataStore_h
#include "V8DOMMap.h"
#include "V8Node.h"
#include <v8.h>
#include <wtf/HashMap.h>
#include <wtf/MainThread.h>
#include <wtf/Noncopyable.h>
#include <wtf/OwnPtr.h>
#include <wtf/StdLibExtras.h>
#include <wtf/Threading.h>
#include <wtf/ThreadSpecific.h>
#include <wtf/Vector.h>
namespace WebCore {
class DOMData;
class DOMDataStore;
typedef WTF::Vector<DOMDataStore*> DOMDataList;
// DOMDataStore
//
// DOMDataStore is the backing store that holds the maps between DOM objects
// and JavaScript objects. In general, each thread can have multiple backing
// stores, one per isolated world.
//
// This class doesn't manage the lifetime of the store. The data store
// lifetime is managed by subclasses.
//
class DOMDataStore {
WTF_MAKE_NONCOPYABLE(DOMDataStore);
public:
enum DOMWrapperMapType {
DOMNodeMap,
DOMObjectMap,
ActiveDOMObjectMap,
#if ENABLE(SVG)
DOMSVGElementInstanceMap
#endif
};
DOMDataStore(DOMData*);
virtual ~DOMDataStore();
// A list of all DOMDataStore objects in the current V8 instance (thread). Normally, each World has a DOMDataStore.
static DOMDataList& allStores();
// Mutex to protect against concurrent access of DOMDataList.
static WTF::Mutex& allStoresMutex();
DOMData* domData() const { return m_domData; }
void* getDOMWrapperMap(DOMWrapperMapType);
DOMNodeMapping& domNodeMap() { return *m_domNodeMap; }
DOMWrapperMap<void>& domObjectMap() { return *m_domObjectMap; }
DOMWrapperMap<void>& activeDomObjectMap() { return *m_activeDomObjectMap; }
#if ENABLE(SVG)
DOMWrapperMap<SVGElementInstance>& domSvgElementInstanceMap() { return *m_domSvgElementInstanceMap; }
#endif
// Need by V8GCController.
static void weakActiveDOMObjectCallback(v8::Persistent<v8::Value> v8Object, void* domObject);
protected:
static void weakNodeCallback(v8::Persistent<v8::Value> v8Object, void* domObject);
static void weakDOMObjectCallback(v8::Persistent<v8::Value> v8Object, void* domObject);
#if ENABLE(SVG)
static void weakSVGElementInstanceCallback(v8::Persistent<v8::Value> v8Object, void* domObject);
#endif
DOMNodeMapping* m_domNodeMap;
DOMWrapperMap<void>* m_domObjectMap;
DOMWrapperMap<void>* m_activeDomObjectMap;
#if ENABLE(SVG)
DOMWrapperMap<SVGElementInstance>* m_domSvgElementInstanceMap;
#endif
private:
// A back-pointer to the DOMData to which we belong.
DOMData* m_domData;
};
} // namespace WebCore
#endif // DOMDataStore_h
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