1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_indexeddb_fileinfo_h__
#define mozilla_dom_indexeddb_fileinfo_h__
#include "IndexedDatabase.h"
#include "nsAtomicRefcnt.h"
#include "nsThreadUtils.h"
#include "FileManager.h"
#include "IndexedDatabaseManager.h"
BEGIN_INDEXEDDB_NAMESPACE
class FileInfo
{
friend class FileManager;
public:
FileInfo(FileManager* aFileManager)
: mFileManager(aFileManager)
{ }
virtual ~FileInfo()
{
#ifdef DEBUG
NS_ASSERTION(NS_IsMainThread(), "File info destroyed on wrong thread!");
#endif
}
static
FileInfo* Create(FileManager* aFileManager, int64_t aId);
void AddRef()
{
if (IndexedDatabaseManager::IsClosed()) {
NS_AtomicIncrementRefcnt(mRefCnt);
}
else {
UpdateReferences(mRefCnt, 1);
}
}
void Release()
{
if (IndexedDatabaseManager::IsClosed()) {
nsrefcnt count = NS_AtomicDecrementRefcnt(mRefCnt);
if (count == 0) {
mRefCnt = 1;
delete this;
}
}
else {
UpdateReferences(mRefCnt, -1);
}
}
void UpdateDBRefs(int32_t aDelta)
{
UpdateReferences(mDBRefCnt, aDelta);
}
void ClearDBRefs()
{
UpdateReferences(mDBRefCnt, 0, true);
}
void UpdateSliceRefs(int32_t aDelta)
{
UpdateReferences(mSliceRefCnt, aDelta);
}
void GetReferences(int32_t* aRefCnt, int32_t* aDBRefCnt,
int32_t* aSliceRefCnt);
FileManager* Manager() const
{
return mFileManager;
}
virtual int64_t Id() const = 0;
private:
void UpdateReferences(nsAutoRefCnt& aRefCount, int32_t aDelta,
bool aClear = false);
void Cleanup();
nsAutoRefCnt mRefCnt;
nsAutoRefCnt mDBRefCnt;
nsAutoRefCnt mSliceRefCnt;
nsRefPtr<FileManager> mFileManager;
};
#define FILEINFO_SUBCLASS(_bits) \
class FileInfo##_bits : public FileInfo \
{ \
public: \
FileInfo##_bits(FileManager* aFileManager, int##_bits##_t aId) \
: FileInfo(aFileManager), mId(aId) \
{ } \
\
virtual int64_t Id() const \
{ \
return mId; \
} \
\
private: \
int##_bits##_t mId; \
};
FILEINFO_SUBCLASS(16)
FILEINFO_SUBCLASS(32)
FILEINFO_SUBCLASS(64)
#undef FILEINFO_SUBCLASS
END_INDEXEDDB_NAMESPACE
#endif // mozilla_dom_indexeddb_fileinfo_h__
|
