1/*
2 * Copyright (C) 2008 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 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28#include "config.h"
29#include "OriginUsageRecord.h"
30
31#if ENABLE(DATABASE)
32
33#include "SQLiteFileSystem.h"
34
35namespace WebCore {
36
37OriginUsageRecord::OriginUsageRecord()
38    : m_cachedDiskUsageIsValid(false)
39{
40}
41
42void OriginUsageRecord::addDatabase(const String& identifier, const String& fullPath)
43{
44    ASSERT(!m_databaseMap.contains(identifier));
45    ASSERT_ARG(identifier, identifier.impl()->refCount() == 1);
46    ASSERT_ARG(fullPath, fullPath.impl()->refCount() == 1);
47
48    m_databaseMap.set(identifier, DatabaseEntry(fullPath));
49    m_unknownSet.add(identifier);
50
51    m_cachedDiskUsageIsValid = false;
52}
53
54void OriginUsageRecord::removeDatabase(const String& identifier)
55{
56    ASSERT(m_databaseMap.contains(identifier));
57
58    m_databaseMap.remove(identifier);
59    m_unknownSet.remove(identifier);
60    m_cachedDiskUsageIsValid = false;
61}
62
63void OriginUsageRecord::markDatabase(const String& identifier)
64{
65    ASSERT(m_databaseMap.contains(identifier));
66    ASSERT_ARG(identifier, identifier.impl()->refCount() == 1);
67
68    m_unknownSet.add(identifier);
69    m_cachedDiskUsageIsValid = false;
70}
71
72unsigned long long OriginUsageRecord::diskUsage()
73{
74    // Use the last cached usage value if we have it.
75    if (m_cachedDiskUsageIsValid)
76        return m_cachedDiskUsage;
77
78    // stat() for the sizes known to be dirty.
79    HashSet<String>::iterator iUnknown = m_unknownSet.begin();
80    HashSet<String>::iterator endUnknown = m_unknownSet.end();
81    for (; iUnknown != endUnknown; ++iUnknown) {
82        const String& path = m_databaseMap.get(*iUnknown).filename;
83        ASSERT(!path.isEmpty());
84
85        // When we can't determine the file size, we'll just have to assume the file is missing/inaccessible.
86        long long size = SQLiteFileSystem::getDatabaseFileSize(path);
87        m_databaseMap.set(*iUnknown, DatabaseEntry(path, size));
88    }
89    m_unknownSet.clear();
90
91    // Recalculate the cached usage value.
92    m_cachedDiskUsage = 0;
93    HashMap<String, DatabaseEntry>::iterator iDatabase = m_databaseMap.begin();
94    HashMap<String, DatabaseEntry>::iterator endDatabase = m_databaseMap.end();
95    for (; iDatabase != endDatabase; ++iDatabase)
96        m_cachedDiskUsage += iDatabase->second.size;
97
98    m_cachedDiskUsageIsValid = true;
99    return m_cachedDiskUsage;
100}
101
102}
103
104#endif
105