/src/mozilla-central/dom/indexedDB/FileInfo.h
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1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #ifndef mozilla_dom_indexeddb_fileinfo_h__ |
8 | | #define mozilla_dom_indexeddb_fileinfo_h__ |
9 | | |
10 | | #include "nsISupportsImpl.h" |
11 | | |
12 | | namespace mozilla { |
13 | | namespace dom { |
14 | | namespace indexedDB { |
15 | | |
16 | | class FileManager; |
17 | | |
18 | | class FileInfo |
19 | | { |
20 | | friend class FileManager; |
21 | | |
22 | | ThreadSafeAutoRefCnt mRefCnt; |
23 | | ThreadSafeAutoRefCnt mDBRefCnt; |
24 | | ThreadSafeAutoRefCnt mSliceRefCnt; |
25 | | |
26 | | RefPtr<FileManager> mFileManager; |
27 | | |
28 | | public: |
29 | | class CustomCleanupCallback; |
30 | | |
31 | | static |
32 | | FileInfo* Create(FileManager* aFileManager, int64_t aId); |
33 | | |
34 | | explicit FileInfo(FileManager* aFileManager); |
35 | | |
36 | | void |
37 | | AddRef() |
38 | 0 | { |
39 | 0 | UpdateReferences(mRefCnt, 1); |
40 | 0 | } |
41 | | |
42 | | void |
43 | | Release(CustomCleanupCallback* aCustomCleanupCallback = nullptr) |
44 | 0 | { |
45 | 0 | UpdateReferences(mRefCnt, -1, aCustomCleanupCallback); |
46 | 0 | } |
47 | | |
48 | | void |
49 | | UpdateDBRefs(int32_t aDelta) |
50 | 0 | { |
51 | 0 | UpdateReferences(mDBRefCnt, aDelta); |
52 | 0 | } |
53 | | |
54 | | void |
55 | | UpdateSliceRefs(int32_t aDelta) |
56 | 0 | { |
57 | 0 | UpdateReferences(mSliceRefCnt, aDelta); |
58 | 0 | } |
59 | | |
60 | | void |
61 | | GetReferences(int32_t* aRefCnt, int32_t* aDBRefCnt, int32_t* aSliceRefCnt); |
62 | | |
63 | | FileManager* |
64 | | Manager() const |
65 | 0 | { |
66 | 0 | return mFileManager; |
67 | 0 | } |
68 | | |
69 | | virtual int64_t |
70 | | Id() const = 0; |
71 | | |
72 | | static already_AddRefed<nsIFile> |
73 | | GetFileForFileInfo(FileInfo* aFileInfo); |
74 | | |
75 | | protected: |
76 | | virtual ~FileInfo(); |
77 | | |
78 | | private: |
79 | | void |
80 | | UpdateReferences(ThreadSafeAutoRefCnt& aRefCount, |
81 | | int32_t aDelta, |
82 | | CustomCleanupCallback* aCustomCleanupCallback = nullptr); |
83 | | |
84 | | bool |
85 | | LockedClearDBRefs(); |
86 | | |
87 | | void |
88 | | Cleanup(); |
89 | | }; |
90 | | |
91 | | class NS_NO_VTABLE FileInfo::CustomCleanupCallback |
92 | | { |
93 | | public: |
94 | | virtual nsresult |
95 | | Cleanup(FileManager* aFileManager, int64_t aId) = 0; |
96 | | |
97 | | protected: |
98 | | CustomCleanupCallback() |
99 | 0 | { } |
100 | | }; |
101 | | |
102 | | } // namespace indexedDB |
103 | | } // namespace dom |
104 | | } // namespace mozilla |
105 | | |
106 | | #endif // mozilla_dom_indexeddb_fileinfo_h__ |