1 | /* |
2 | * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
3 | * Copyright (C) 2011 Google, Inc. All Rights Reserved. |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
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 | * |
14 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
15 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
17 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
18 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
19 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
20 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
21 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
22 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
24 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 | * |
26 | */ |
27 | |
28 | #pragma once |
29 | |
30 | #include "ActiveDOMObject.h" |
31 | #include <wtf/RefPtr.h> |
32 | #include <wtf/ThreadSafeRefCounted.h> |
33 | |
34 | #if PLATFORM(IOS_FAMILY) |
35 | #include <wtf/Threading.h> |
36 | #endif |
37 | |
38 | namespace WebCore { |
39 | |
40 | class Database; |
41 | class DatabaseDetails; |
42 | class DatabaseTaskSynchronizer; |
43 | class DatabaseThread; |
44 | class SecurityOrigin; |
45 | struct SecurityOriginData; |
46 | |
47 | class DatabaseContext final : public ThreadSafeRefCounted<DatabaseContext>, private ActiveDOMObject { |
48 | public: |
49 | virtual ~DatabaseContext(); |
50 | |
51 | DatabaseThread* existingDatabaseThread() const { return m_databaseThread.get(); } |
52 | DatabaseThread* databaseThread(); |
53 | |
54 | void setHasOpenDatabases() { m_hasOpenDatabases = true; } |
55 | bool hasOpenDatabases() const { return m_hasOpenDatabases; } |
56 | |
57 | // When the database cleanup is done, the sychronizer will be signalled. |
58 | bool stopDatabases(DatabaseTaskSynchronizer*); |
59 | |
60 | bool allowDatabaseAccess() const; |
61 | void databaseExceededQuota(const String& name, DatabaseDetails); |
62 | |
63 | using ActiveDOMObject::scriptExecutionContext; |
64 | const SecurityOriginData& securityOrigin() const; |
65 | |
66 | bool isContextThread() const; |
67 | |
68 | private: |
69 | explicit DatabaseContext(ScriptExecutionContext&); |
70 | |
71 | void stopDatabases() { stopDatabases(nullptr); } |
72 | |
73 | void contextDestroyed() override; |
74 | void stop() override; |
75 | bool canSuspendForDocumentSuspension() const override; |
76 | const char* activeDOMObjectName() const override { return "DatabaseContext" ; } |
77 | |
78 | RefPtr<DatabaseThread> m_databaseThread; |
79 | bool m_hasOpenDatabases { false }; // This never changes back to false, even after the database thread is closed. |
80 | bool m_hasRequestedTermination { false }; |
81 | |
82 | friend class DatabaseManager; |
83 | }; |
84 | |
85 | } // namespace WebCore |
86 | |