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1 /*
2  * Copyright (C) 2009 Google Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are
6  * met:
7  *
8  *     * Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  *     * Redistributions in binary form must reproduce the above
11  * copyright notice, this list of conditions and the following disclaimer
12  * in the documentation and/or other materials provided with the
13  * distribution.
14  *     * Neither the name of Google Inc. nor the names of its
15  * contributors may be used to endorse or promote products derived from
16  * this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 #include "config.h"
32 #include "MainThreadDOMData.h"
33 
34 #include "V8IsolatedContext.h"
35 
36 namespace WebCore {
37 
MainThreadDOMData()38 MainThreadDOMData::MainThreadDOMData()
39     : m_defaultStore(this)
40 {
41 }
42 
getCurrent()43 MainThreadDOMData* MainThreadDOMData::getCurrent()
44 {
45     ASSERT(WTF::isMainThread());
46     DEFINE_STATIC_LOCAL(MainThreadDOMData, mainThreadDOMData, ());
47     return &mainThreadDOMData;
48 }
49 
getMainThreadStore()50 DOMDataStore& MainThreadDOMData::getMainThreadStore()
51 {
52     // This is broken out as a separate non-virtual method from getStore()
53     // so that it can be inlined by getCurrentMainThreadStore, which is
54     // a hot spot in Dromaeo DOM tests.
55     ASSERT(WTF::isMainThread());
56     V8IsolatedContext* context = V8IsolatedContext::getEntered();
57     if (UNLIKELY(context != 0))
58         return *context->world()->domDataStore();
59     return m_defaultStore;
60 }
61 
getCurrentMainThreadStore()62 DOMDataStore& MainThreadDOMData::getCurrentMainThreadStore()
63 {
64     return getCurrent()->getMainThreadStore();
65 }
66 
67 
68 } // namespace WebCore
69