/platform/external/webkit/WebCore/bindings/v8/DOMData.cpp
https://github.com/aharish/totoro-gb-opensource-update2 · C++ · 129 lines · 75 code · 21 blank · 33 comment · 8 complexity · 69d38093dc703e797b9e7f3eb762e5cd MD5 · raw file
- /*
- * 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 "DOMData.h"
- #include "ChildThreadDOMData.h"
- #include "MainThreadDOMData.h"
- #include "WebGLContextAttributes.h"
- #include "WebGLUniformLocation.h"
- namespace WebCore {
- DOMData::DOMData()
- : m_delayedProcessingScheduled(false)
- , m_isMainThread(WTF::isMainThread())
- , m_owningThread(WTF::currentThread())
- {
- }
- DOMData::~DOMData()
- {
- }
- DOMData* DOMData::getCurrent()
- {
- if (WTF::isMainThread())
- return MainThreadDOMData::getCurrent();
- DEFINE_STATIC_LOCAL(WTF::ThreadSpecific<ChildThreadDOMData>, childThreadDOMData, ());
- return childThreadDOMData;
- }
- void DOMData::ensureDeref(V8ClassIndex::V8WrapperType type, void* domObject)
- {
- if (m_owningThread == WTF::currentThread()) {
- // No need to delay the work. We can deref right now.
- derefObject(type, domObject);
- return;
- }
- // We need to do the deref on the correct thread.
- m_delayedObjectMap.set(domObject, type);
- // Post a task to the owning thread in order to process the delayed queue.
- // FIXME: For now, we can only post to main thread due to WTF task posting limitation. We will fix this when we work on nested worker.
- if (!m_delayedProcessingScheduled) {
- m_delayedProcessingScheduled = true;
- if (isMainThread())
- WTF::callOnMainThread(&derefDelayedObjectsInCurrentThread, 0);
- }
- }
- void DOMData::derefObject(V8ClassIndex::V8WrapperType type, void* domObject)
- {
- switch (type) {
- case V8ClassIndex::NODE:
- static_cast<Node*>(domObject)->deref();
- break;
- #define MakeCase(type, name) \
- case V8ClassIndex::type: static_cast<name*>(domObject)->deref(); break;
- DOM_OBJECT_TYPES(MakeCase) // This includes both active and non-active.
- #undef MakeCase
- #if ENABLE(SVG)
- #define MakeCase(type, name) \
- case V8ClassIndex::type: static_cast<name*>(domObject)->deref(); break;
- SVG_OBJECT_TYPES(MakeCase) // This also includes SVGElementInstance.
- #undef MakeCase
- #define MakeCase(type, name) \
- case V8ClassIndex::type: \
- static_cast<V8SVGPODTypeWrapper<name>*>(domObject)->deref(); break;
- SVG_POD_NATIVE_TYPES(MakeCase)
- #undef MakeCase
- #endif
- default:
- ASSERT_NOT_REACHED();
- break;
- }
- }
- void DOMData::derefDelayedObjects()
- {
- WTF::MutexLocker locker(DOMDataStore::allStoresMutex());
- m_delayedProcessingScheduled = false;
- for (DelayedObjectMap::iterator iter(m_delayedObjectMap.begin()); iter != m_delayedObjectMap.end(); ++iter)
- derefObject(iter->second, iter->first);
- m_delayedObjectMap.clear();
- }
- void DOMData::derefDelayedObjectsInCurrentThread(void*)
- {
- getCurrent()->derefDelayedObjects();
- }
- } // namespace WebCore