diff -r 000000000000 -r 4f2f89ce4247 WebCore/bindings/v8/V8DOMMap.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/bindings/v8/V8DOMMap.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,201 @@
+/*
+ * 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.
+ */
+
+#include "config.h"
+#include "V8DOMMap.h"
+
+#include "DOMData.h"
+#include "DOMDataStore.h"
+#include "MainThreadDOMData.h"
+#include "ScopedDOMDataStore.h"
+
+namespace WebCore {
+
+DOMDataStoreHandle::DOMDataStoreHandle()
+    : m_store(new ScopedDOMDataStore(DOMData::getCurrent()))
+{
+}
+
+DOMDataStoreHandle::~DOMDataStoreHandle()
+{
+}
+
+static bool fasterDOMStoreAccess = false;
+
+static inline DOMDataStore& getDOMDataStore()
+{
+    if (LIKELY(fasterDOMStoreAccess)) {
+        ASSERT(WTF::isMainThread());
+        return MainThreadDOMData::getCurrentMainThreadStore();
+    }
+
+    return DOMData::getCurrent()->getStore();
+}
+
+void enableFasterDOMStoreAccess()
+{
+    fasterDOMStoreAccess = true;
+}
+
+DOMNodeMapping& getDOMNodeMap()
+{
+    return getDOMDataStore().domNodeMap();
+}
+
+DOMWrapperMap<void>& getDOMObjectMap()
+{
+    return getDOMDataStore().domObjectMap();
+}
+
+DOMWrapperMap<void>& getActiveDOMObjectMap()
+{
+    return getDOMDataStore().activeDomObjectMap();
+}
+
+#if ENABLE(SVG)
+
+DOMWrapperMap<SVGElementInstance>& getDOMSVGElementInstanceMap()
+{
+    return getDOMDataStore().domSvgElementInstanceMap();
+}
+
+// Map of SVG objects with contexts to V8 objects
+DOMWrapperMap<void>& getDOMSVGObjectWithContextMap()
+{
+    return getDOMDataStore().domSvgObjectWithContextMap();
+}
+
+#endif // ENABLE(SVG)
+
+void removeAllDOMObjectsInCurrentThread()
+{
+    v8::HandleScope scope;
+
+    // The DOM objects with the following types only exist on the main thread.
+    if (WTF::isMainThread()) {
+        // Remove all DOM nodes.
+        DOMData::removeObjectsFromWrapperMap<Node>(getDOMNodeMap());
+
+#if ENABLE(SVG)
+        // Remove all SVG element instances in the wrapper map.
+        DOMData::removeObjectsFromWrapperMap<SVGElementInstance>(getDOMSVGElementInstanceMap());
+
+        // Remove all SVG objects with context in the wrapper map.
+        DOMData::removeObjectsFromWrapperMap<void>(getDOMSVGObjectWithContextMap());
+#endif
+    }
+
+    // Remove all DOM objects in the wrapper map.
+    DOMData::removeObjectsFromWrapperMap<void>(getDOMObjectMap());
+
+    // Remove all active DOM objects in the wrapper map.
+    DOMData::removeObjectsFromWrapperMap<void>(getActiveDOMObjectMap());
+}
+
+void visitDOMNodesInCurrentThread(DOMWrapperMap<Node>::Visitor* visitor)
+{
+    v8::HandleScope scope;
+
+    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
+    DOMDataList& list = DOMDataStore::allStores();
+    for (size_t i = 0; i < list.size(); ++i) {
+        DOMDataStore* store = list[i];
+        if (!store->domData()->owningThread() == WTF::currentThread())
+            continue;
+
+        store->domNodeMap().visit(visitor);
+    }
+}
+
+void visitDOMObjectsInCurrentThread(DOMWrapperMap<void>::Visitor* visitor)
+{
+    v8::HandleScope scope;
+
+    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
+    DOMDataList& list = DOMDataStore::allStores();
+    for (size_t i = 0; i < list.size(); ++i) {
+        DOMDataStore* store = list[i];
+        if (!store->domData()->owningThread() == WTF::currentThread())
+            continue;
+
+        store->domObjectMap().visit(visitor);
+    }
+}
+
+void visitActiveDOMObjectsInCurrentThread(DOMWrapperMap<void>::Visitor* visitor)
+{
+    v8::HandleScope scope;
+
+    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
+    DOMDataList& list = DOMDataStore::allStores();
+    for (size_t i = 0; i < list.size(); ++i) {
+        DOMDataStore* store = list[i];
+        if (!store->domData()->owningThread() == WTF::currentThread())
+            continue;
+
+        store->activeDomObjectMap().visit(visitor);
+    }
+}
+
+#if ENABLE(SVG)
+
+void visitDOMSVGElementInstancesInCurrentThread(DOMWrapperMap<SVGElementInstance>::Visitor* visitor)
+{
+    v8::HandleScope scope;
+
+    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
+    DOMDataList& list = DOMDataStore::allStores();
+    for (size_t i = 0; i < list.size(); ++i) {
+        DOMDataStore* store = list[i];
+        if (!store->domData()->owningThread() == WTF::currentThread())
+            continue;
+
+        store->domSvgElementInstanceMap().visit(visitor);
+    }
+}
+
+void visitSVGObjectsInCurrentThread(DOMWrapperMap<void>::Visitor* visitor)
+{
+    v8::HandleScope scope;
+
+    WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
+    DOMDataList& list = DOMDataStore::allStores();
+    for (size_t i = 0; i < list.size(); ++i) {
+        DOMDataStore* store = list[i];
+        if (!store->domData()->owningThread() == WTF::currentThread())
+            continue;
+
+        store->domSvgObjectWithContextMap().visit(visitor);
+    }
+}
+
+#endif
+
+} // namespace WebCore