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#ifndef QuotaTracker_h
32#define QuotaTracker_h
33
34#include "platform/weborigin/SecurityOrigin.h"
35#include "wtf/HashMap.h"
36#include "wtf/ThreadingPrimitives.h"
37#include "wtf/text/StringHash.h"
38#include "wtf/text/WTFString.h"
39
40namespace blink {
41
42class QuotaTracker {
43public:
44    static QuotaTracker& instance();
45
46    void getDatabaseSizeAndSpaceAvailableToOrigin(
47        const String& originIdentifier, const String& databaseName,
48        unsigned long long* databaseSize, unsigned long long* spaceAvailable);
49    void updateDatabaseSize(
50        const String& originIdentifier, const String& databaseName,
51        unsigned long long databaseSize);
52    void updateSpaceAvailableToOrigin(const String& originIdentifier, unsigned long long spaceAvailable);
53    void resetSpaceAvailableToOrigin(const String& originIdentifier);
54
55private:
56    QuotaTracker() { }
57
58    typedef HashMap<String, unsigned long long> SizeMap;
59    SizeMap m_spaceAvailableToOrigins;
60    HashMap<String, SizeMap> m_databaseSizes;
61    Mutex m_dataGuard;
62};
63
64}
65
66#endif // QuotaTracker_h
67