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 
29 #ifndef OriginQuotaManager_h
30 #define OriginQuotaManager_h
31 
32 #if ENABLE(DATABASE)
33 
34 #include "SecurityOriginHash.h"
35 #include <wtf/HashMap.h>
36 #include <wtf/Threading.h>
37 #include <wtf/text/StringHash.h>
38 
39 namespace WebCore {
40 
41 class AbstractDatabase;
42 class OriginUsageRecord;
43 
44 class OriginQuotaManager {
45     WTF_MAKE_NONCOPYABLE(OriginQuotaManager); WTF_MAKE_FAST_ALLOCATED;
46 public:
47     OriginQuotaManager();
48 
49     bool tryLock();
50     void lock();
51     void unlock();
52 
53     void trackOrigin(PassRefPtr<SecurityOrigin>);
54     bool tracksOrigin(SecurityOrigin*) const;
55     void addDatabase(SecurityOrigin*, const String& databaseIdentifier, const String& fullPath);
56     void removeDatabase(SecurityOrigin*, const String& databaseIdentifier);
57     void removeOrigin(SecurityOrigin*);
58 
59     void markDatabase(AbstractDatabase*); // Mark dirtiness of a specific database.
60     unsigned long long diskUsage(SecurityOrigin*) const;
61 
62 private:
63     mutable Mutex m_usageRecordGuard;
64 #ifndef NDEBUG
65     bool m_usageRecordGuardLocked;
66 #endif
67 
68     typedef HashMap<RefPtr<SecurityOrigin>, OriginUsageRecord*, SecurityOriginHash> OriginUsageMap;
69     OriginUsageMap m_usageMap;
70 };
71 
72 } // namespace WebCore
73 
74 #endif // ENABLE(DATABASE)
75 
76 #endif // OriginQuotaManager_h
77