LCOV - code coverage report
Current view: directory - objdir/dist/include/mozilla/dom/indexedDB - FileInfo.h (source / functions) Found Hit Coverage
Test: app.info Lines: 18 0 0.0 %
Date: 2012-06-02 Functions: 4 0 0.0 %

       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                 : #ifndef mozilla_dom_indexeddb_fileinfo_h__
      40                 : #define mozilla_dom_indexeddb_fileinfo_h__
      41                 : 
      42                 : #include "IndexedDatabase.h"
      43                 : #include "nsAtomicRefcnt.h"
      44                 : #include "nsThreadUtils.h"
      45                 : #include "FileManager.h"
      46                 : #include "IndexedDatabaseManager.h"
      47                 : 
      48                 : BEGIN_INDEXEDDB_NAMESPACE
      49                 : 
      50                 : class FileInfo
      51                 : {
      52                 :   friend class FileManager;
      53                 : 
      54                 : public:
      55                 :   FileInfo(FileManager* aFileManager)
      56                 :   : mFileManager(aFileManager)
      57                 :   { }
      58                 : 
      59                 :   virtual ~FileInfo()
      60                 :   {
      61                 : #ifdef DEBUG
      62                 :     NS_ASSERTION(NS_IsMainThread(), "File info destroyed on wrong thread!");
      63                 : #endif
      64                 :   }
      65                 : 
      66                 :   static
      67                 :   FileInfo* Create(FileManager* aFileManager, PRInt64 aId);
      68                 : 
      69               0 :   void AddRef()
      70                 :   {
      71               0 :     if (IndexedDatabaseManager::IsClosed()) {
      72               0 :       NS_AtomicIncrementRefcnt(mRefCnt);
      73                 :     }
      74                 :     else {
      75               0 :       UpdateReferences(mRefCnt, 1);
      76                 :     }
      77               0 :   }
      78                 : 
      79               0 :   void Release()
      80                 :   {
      81               0 :     if (IndexedDatabaseManager::IsClosed()) {
      82               0 :       nsrefcnt count = NS_AtomicDecrementRefcnt(mRefCnt);
      83               0 :       if (count == 0) {
      84               0 :         mRefCnt = 1;
      85               0 :         delete this;
      86                 :       }
      87                 :     }
      88                 :     else {
      89               0 :       UpdateReferences(mRefCnt, -1);
      90                 :     }
      91               0 :   }
      92                 : 
      93               0 :   void UpdateDBRefs(PRInt32 aDelta)
      94                 :   {
      95               0 :     UpdateReferences(mDBRefCnt, aDelta);
      96               0 :   }
      97                 : 
      98                 :   void ClearDBRefs()
      99                 :   {
     100                 :     UpdateReferences(mDBRefCnt, 0, true);
     101                 :   }
     102                 : 
     103                 :   void UpdateSliceRefs(PRInt32 aDelta)
     104                 :   {
     105                 :     UpdateReferences(mSliceRefCnt, aDelta);
     106                 :   }
     107                 : 
     108                 :   void GetReferences(PRInt32* aRefCnt, PRInt32* aDBRefCnt,
     109                 :                      PRInt32* aSliceRefCnt);
     110                 : 
     111               0 :   FileManager* Manager() const
     112                 :   {
     113               0 :     return mFileManager;
     114                 :   }
     115                 : 
     116                 :   virtual PRInt64 Id() const = 0;
     117                 : 
     118                 : private:
     119                 :   void UpdateReferences(nsAutoRefCnt& aRefCount, PRInt32 aDelta,
     120                 :                         bool aClear = false);
     121                 :   void Cleanup();
     122                 : 
     123                 :   nsAutoRefCnt mRefCnt;
     124                 :   nsAutoRefCnt mDBRefCnt;
     125                 :   nsAutoRefCnt mSliceRefCnt;
     126                 : 
     127                 :   nsRefPtr<FileManager> mFileManager;
     128                 : };
     129                 : 
     130                 : #define FILEINFO_SUBCLASS(_bits)                                              \
     131                 : class FileInfo##_bits : public FileInfo                                       \
     132                 : {                                                                             \
     133                 : public:                                                                       \
     134                 :   FileInfo##_bits(FileManager* aFileManager, PRInt##_bits aId)                \
     135                 :   : FileInfo(aFileManager), mId(aId)                                          \
     136                 :   { }                                                                         \
     137                 :                                                                               \
     138                 :   virtual PRInt64 Id() const                                                  \
     139                 :   {                                                                           \
     140                 :     return mId;                                                               \
     141                 :   }                                                                           \
     142                 :                                                                               \
     143                 : private:                                                                      \
     144                 :   PRInt##_bits mId;                                                           \
     145                 : };
     146                 : 
     147                 : FILEINFO_SUBCLASS(16)
     148                 : FILEINFO_SUBCLASS(32)
     149                 : FILEINFO_SUBCLASS(64)
     150                 : 
     151                 : #undef FILEINFO_SUBCLASS
     152                 : 
     153                 : END_INDEXEDDB_NAMESPACE
     154                 : 
     155                 : #endif // mozilla_dom_indexeddb_fileinfo_h__

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