1/*
2 * Copyright (C) 2010-2017 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include <WebCore/SharedStringHash.h>
29#include <wtf/RefPtr.h>
30
31namespace WebKit {
32
33class SharedMemory;
34
35class SharedStringHashTableReadOnly {
36public:
37 SharedStringHashTableReadOnly();
38 ~SharedStringHashTableReadOnly();
39
40 bool contains(WebCore::SharedStringHash) const;
41
42 SharedMemory* sharedMemory() const { return m_sharedMemory.get(); }
43 void setSharedMemory(RefPtr<SharedMemory>&&);
44
45protected:
46 WebCore::SharedStringHash* findSlot(WebCore::SharedStringHash) const;
47
48 RefPtr<SharedMemory> m_sharedMemory;
49 unsigned m_tableSize { 0 };
50 unsigned m_tableSizeMask { 0 };
51 WebCore::SharedStringHash* m_table { nullptr };
52};
53
54} // namespace WebKit
55