LCOV - code coverage report
Current view: directory - dom/src/storage - nsDOMStorageBaseDB.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 28 27 96.4 %
Date: 2012-06-02 Functions: 7 7 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is mozilla.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Mozilla Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2006
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Honza Bambas <honzab@firemni.cz>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or 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 "nsDOMStorageBaseDB.h"
      40                 : #include "nsDOMStorage.h"
      41                 : 
      42                 : PRUint64 nsDOMStorageBaseDB::sGlobalVersion = 1;
      43                 : 
      44             308 : nsDOMStorageBaseDB::nsDOMStorageBaseDB()
      45                 : {
      46             308 :   mScopesVersion.Init(8);
      47             308 : }
      48                 : 
      49                 : // public
      50                 : 
      51                 : void
      52              68 : nsDOMStorageBaseDB::MarkScopeCached(DOMStorageImpl* aStorage)
      53                 : {
      54              68 :   aStorage->SetCachedVersion(CachedScopeVersion(aStorage));
      55              68 : }
      56                 : 
      57                 : bool
      58              92 : nsDOMStorageBaseDB::IsScopeDirty(DOMStorageImpl* aStorage)
      59                 : {
      60              92 :   return !aStorage->CachedVersion() ||
      61              92 :          (aStorage->CachedVersion() != CachedScopeVersion(aStorage));
      62                 : }
      63                 : 
      64                 : // protected
      65                 : 
      66                 : // static
      67                 : PRUint64
      68             345 : nsDOMStorageBaseDB::NextGlobalVersion()
      69                 : {
      70             345 :   sGlobalVersion++;
      71             345 :   if (sGlobalVersion == 0) // Control overlap, never return 0
      72               0 :     sGlobalVersion = 1;
      73             345 :   return sGlobalVersion;
      74                 : }
      75                 : 
      76                 : PRUint64
      77             132 : nsDOMStorageBaseDB::CachedScopeVersion(DOMStorageImpl* aStorage)
      78                 : {
      79                 :   PRUint64 currentVersion;
      80             132 :   if (mScopesVersion.Get(aStorage->GetScopeDBKey(), &currentVersion))
      81             112 :     return currentVersion;
      82                 : 
      83              20 :   mScopesVersion.Put(aStorage->GetScopeDBKey(), sGlobalVersion);
      84              20 :   return sGlobalVersion;
      85                 : }
      86                 : 
      87                 : void
      88              30 : nsDOMStorageBaseDB::MarkScopeDirty(DOMStorageImpl* aStorage)
      89                 : {
      90              30 :   PRUint64 nextVersion = NextGlobalVersion();
      91              30 :   mScopesVersion.Put(aStorage->GetScopeDBKey(), nextVersion);
      92                 : 
      93                 :   // We may do this because the storage updates its cache along with
      94                 :   // updating the database.
      95              30 :   aStorage->SetCachedVersion(nextVersion);
      96              30 : }
      97                 : 
      98                 : void
      99             315 : nsDOMStorageBaseDB::MarkAllScopesDirty()
     100                 : {
     101             315 :   mScopesVersion.Clear();
     102             315 :   NextGlobalVersion();
     103             315 : }

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