1 /*
2 * Copyright (C) 2011 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 "modules/webdatabase/QuotaTracker.h"
33
34 #include "public/platform/Platform.h"
35 #include "wtf/StdLibExtras.h"
36 #include "wtf/Threading.h"
37
38 namespace WebCore {
39
instance()40 QuotaTracker& QuotaTracker::instance()
41 {
42 AtomicallyInitializedStatic(QuotaTracker&, tracker = *new QuotaTracker);
43 return tracker;
44 }
45
getDatabaseSizeAndSpaceAvailableToOrigin(const String & originIdentifier,const String & databaseName,unsigned long long * databaseSize,unsigned long long * spaceAvailable)46 void QuotaTracker::getDatabaseSizeAndSpaceAvailableToOrigin(
47 const String& originIdentifier, const String& databaseName,
48 unsigned long long* databaseSize, unsigned long long* spaceAvailable)
49 {
50 // Extra scope to unlock prior to potentially calling blink::Platform.
51 {
52 MutexLocker lockData(m_dataGuard);
53 ASSERT(m_databaseSizes.contains(originIdentifier));
54 HashMap<String, SizeMap>::const_iterator it = m_databaseSizes.find(originIdentifier);
55 ASSERT(it->value.contains(databaseName));
56 *databaseSize = it->value.get(databaseName);
57
58 if (m_spaceAvailableToOrigins.contains(originIdentifier)) {
59 *spaceAvailable = m_spaceAvailableToOrigins.get(originIdentifier);
60 return;
61 }
62 }
63
64 // The embedder hasn't pushed this value to us, so we pull it as needed.
65 *spaceAvailable = blink::Platform::current()->databaseGetSpaceAvailableForOrigin(originIdentifier);
66 }
67
updateDatabaseSize(const String & originIdentifier,const String & databaseName,unsigned long long databaseSize)68 void QuotaTracker::updateDatabaseSize(
69 const String& originIdentifier, const String& databaseName,
70 unsigned long long databaseSize)
71 {
72 MutexLocker lockData(m_dataGuard);
73 HashMap<String, SizeMap>::iterator it = m_databaseSizes.add(originIdentifier, SizeMap()).iterator;
74 it->value.set(databaseName, databaseSize);
75 }
76
updateSpaceAvailableToOrigin(const String & originIdentifier,unsigned long long spaceAvailable)77 void QuotaTracker::updateSpaceAvailableToOrigin(const String& originIdentifier, unsigned long long spaceAvailable)
78 {
79 MutexLocker lockData(m_dataGuard);
80 m_spaceAvailableToOrigins.set(originIdentifier, spaceAvailable);
81 }
82
resetSpaceAvailableToOrigin(const String & originIdentifier)83 void QuotaTracker::resetSpaceAvailableToOrigin(const String& originIdentifier)
84 {
85 MutexLocker lockData(m_dataGuard);
86 m_spaceAvailableToOrigins.remove(originIdentifier);
87 }
88
89 } // namespace WebCore
90