1 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* vim: set ts=2 et sw=2 tw=80: */
3 : /* ***** BEGIN LICENSE BLOCK *****
4 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 : *
6 : * The contents of this file are subject to the Mozilla Public License Version
7 : * 1.1 (the "License"); you may not use this file except in compliance with
8 : * the License. You may obtain a copy of the License at
9 : * http://www.mozilla.org/MPL/
10 : *
11 : * Software distributed under the License is distributed on an "AS IS" basis,
12 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 : * for the specific language governing rights and limitations under the
14 : * License.
15 : *
16 : * The Original Code is Indexed Database.
17 : *
18 : * The Initial Developer of the Original Code is
19 : * The Mozilla Foundation.
20 : * Portions created by the Initial Developer are Copyright (C) 2011
21 : * the Initial Developer. All Rights Reserved.
22 : *
23 : * Contributor(s):
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "IndexedDatabaseManager.h"
40 : #include "FileInfo.h"
41 :
42 : USING_INDEXEDDB_NAMESPACE
43 :
44 : // static
45 : FileInfo*
46 0 : FileInfo::Create(FileManager* aFileManager, PRInt64 aId)
47 : {
48 0 : NS_ASSERTION(aId > 0, "Wrong id!");
49 :
50 0 : if (aId <= PR_INT16_MAX) {
51 0 : return new FileInfo16(aFileManager, aId);
52 : }
53 :
54 0 : if (aId <= PR_INT32_MAX) {
55 0 : return new FileInfo32(aFileManager, aId);
56 : }
57 :
58 0 : return new FileInfo64(aFileManager, aId);
59 : }
60 :
61 : void
62 0 : FileInfo::GetReferences(PRInt32* aRefCnt, PRInt32* aDBRefCnt,
63 : PRInt32* aSliceRefCnt)
64 : {
65 0 : if (IndexedDatabaseManager::IsClosed()) {
66 0 : NS_ERROR("Shouldn't be called after shutdown!");
67 :
68 0 : if (aRefCnt) {
69 0 : *aRefCnt = -1;
70 : }
71 :
72 0 : if (aDBRefCnt) {
73 0 : *aDBRefCnt = -1;
74 : }
75 :
76 0 : if (aSliceRefCnt) {
77 0 : *aSliceRefCnt = -1;
78 : }
79 :
80 0 : return;
81 : }
82 :
83 0 : MutexAutoLock lock(IndexedDatabaseManager::FileMutex());
84 :
85 0 : if (aRefCnt) {
86 0 : *aRefCnt = mRefCnt;
87 : }
88 :
89 0 : if (aDBRefCnt) {
90 0 : *aDBRefCnt = mDBRefCnt;
91 : }
92 :
93 0 : if (aSliceRefCnt) {
94 0 : *aSliceRefCnt = mSliceRefCnt;
95 : }
96 : }
97 :
98 : void
99 0 : FileInfo::UpdateReferences(nsAutoRefCnt& aRefCount, PRInt32 aDelta,
100 : bool aClear)
101 : {
102 0 : if (IndexedDatabaseManager::IsClosed()) {
103 0 : NS_ERROR("Shouldn't be called after shutdown!");
104 0 : return;
105 : }
106 :
107 : {
108 0 : MutexAutoLock lock(IndexedDatabaseManager::FileMutex());
109 :
110 0 : aRefCount = aClear ? 0 : aRefCount + aDelta;
111 :
112 0 : if (mRefCnt + mDBRefCnt + mSliceRefCnt > 0) {
113 : return;
114 : }
115 :
116 0 : mFileManager->mFileInfos.Remove(Id());
117 : }
118 :
119 0 : Cleanup();
120 :
121 0 : delete this;
122 : }
123 :
124 : void
125 0 : FileInfo::Cleanup()
126 : {
127 0 : if (IndexedDatabaseManager::IsShuttingDown() ||
128 0 : mFileManager->Invalidated()) {
129 0 : return;
130 : }
131 :
132 0 : nsRefPtr<IndexedDatabaseManager> mgr = IndexedDatabaseManager::Get();
133 0 : NS_ASSERTION(mgr, "Shouldn't be null!");
134 :
135 0 : if (NS_FAILED(mgr->AsyncDeleteFile(mFileManager, Id()))) {
136 0 : NS_WARNING("Failed to delete file asynchronously!");
137 : }
138 : }
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