LCOV - code coverage report
Current view: directory - netwerk/cache - nsDiskCacheEntry.h (source / functions) Found Hit Coverage
Test: app.info Lines: 32 28 87.5 %
Date: 2012-06-02 Functions: 8 5 62.5 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2                 :  *
       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 nsMemoryCacheDevice.cpp, released
      17                 :  * February 22, 2001.
      18                 :  *
      19                 :  * The Initial Developer of the Original Code is
      20                 :  * Netscape Communications Corporation.
      21                 :  * Portions created by the Initial Developer are Copyright (C) 2001
      22                 :  * the Initial Developer. All Rights Reserved.
      23                 :  *
      24                 :  * Contributor(s):
      25                 :  *   Gordon Sheridan  <gordon@netscape.com>
      26                 :  *   Patrick C. Beard <beard@netscape.com>
      27                 :  *
      28                 :  * Alternatively, the contents of this file may be used under the terms of
      29                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      30                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      31                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      32                 :  * of those above. If you wish to allow use of your version of this file only
      33                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      34                 :  * use your version of this file under the terms of the MPL, indicate your
      35                 :  * decision by deleting the provisions above and replace them with the notice
      36                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      37                 :  * the provisions above, a recipient may use your version of this file under
      38                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      39                 :  *
      40                 :  * ***** END LICENSE BLOCK ***** */
      41                 : 
      42                 : #ifndef _nsDiskCacheEntry_h_
      43                 : #define _nsDiskCacheEntry_h_
      44                 : 
      45                 : #include "nsDiskCacheMap.h"
      46                 : 
      47                 : #include "nsCacheEntry.h"
      48                 : 
      49                 : 
      50                 : /******************************************************************************
      51                 :  *  nsDiskCacheEntry
      52                 :  *****************************************************************************/
      53                 : struct nsDiskCacheEntry {
      54                 :     PRUint32        mHeaderVersion; // useful for stand-alone metadata files
      55                 :     PRUint32        mMetaLocation;  // for verification
      56                 :     PRInt32         mFetchCount;
      57                 :     PRUint32        mLastFetched;
      58                 :     PRUint32        mLastModified;
      59                 :     PRUint32        mExpirationTime;
      60                 :     PRUint32        mDataSize;
      61                 :     PRUint32        mKeySize;       // includes terminating null byte
      62                 :     PRUint32        mMetaDataSize;  // includes terminating null byte
      63                 :     // followed by key data (mKeySize bytes)
      64                 :     // followed by meta data (mMetaDataSize bytes)
      65                 : 
      66             279 :     PRUint32        Size()    { return sizeof(nsDiskCacheEntry) + 
      67             279 :                                     mKeySize + mMetaDataSize;
      68                 :                               }
      69                 : 
      70            2157 :     char*           Key()     { return reinterpret_cast<char*const>(this) + 
      71            2157 :                                     sizeof(nsDiskCacheEntry);
      72                 :                               }
      73                 : 
      74             939 :     char*           MetaData()
      75             939 :                               { return Key() + mKeySize; }
      76                 : 
      77                 :     nsCacheEntry *  CreateCacheEntry(nsCacheDevice *  device);
      78                 : 
      79             660 :     void Swap()         // host to network (memory to disk)
      80                 :     {
      81                 : #if defined(IS_LITTLE_ENDIAN)   
      82             660 :         mHeaderVersion      = htonl(mHeaderVersion);
      83             660 :         mMetaLocation       = htonl(mMetaLocation);
      84             660 :         mFetchCount         = htonl(mFetchCount);
      85             660 :         mLastFetched        = htonl(mLastFetched);
      86             660 :         mLastModified       = htonl(mLastModified);
      87             660 :         mExpirationTime     = htonl(mExpirationTime);
      88             660 :         mDataSize           = htonl(mDataSize);
      89             660 :         mKeySize            = htonl(mKeySize);
      90             660 :         mMetaDataSize       = htonl(mMetaDataSize);
      91                 : #endif
      92             660 :     }
      93                 :     
      94             279 :     void Unswap()       // network to host (disk to memory)
      95                 :     {
      96                 : #if defined(IS_LITTLE_ENDIAN)
      97             279 :         mHeaderVersion      = ntohl(mHeaderVersion);
      98             279 :         mMetaLocation       = ntohl(mMetaLocation);
      99             279 :         mFetchCount         = ntohl(mFetchCount);
     100             279 :         mLastFetched        = ntohl(mLastFetched);
     101             279 :         mLastModified       = ntohl(mLastModified);
     102             279 :         mExpirationTime     = ntohl(mExpirationTime);
     103             279 :         mDataSize           = ntohl(mDataSize);
     104             279 :         mKeySize            = ntohl(mKeySize);
     105             279 :         mMetaDataSize       = ntohl(mMetaDataSize);
     106                 : #endif
     107             279 :     }
     108                 : };
     109                 : 
     110                 : 
     111                 : /******************************************************************************
     112                 :  *  nsDiskCacheEntryInfo
     113                 :  *****************************************************************************/
     114                 : class nsDiskCacheEntryInfo : public nsICacheEntryInfo {
     115                 : public:
     116                 :     NS_DECL_ISUPPORTS
     117                 :     NS_DECL_NSICACHEENTRYINFO
     118                 : 
     119               0 :     nsDiskCacheEntryInfo(const char * deviceID, nsDiskCacheEntry * diskEntry)
     120                 :         : mDeviceID(deviceID)
     121               0 :         , mDiskEntry(diskEntry)
     122                 :     {
     123               0 :     }
     124                 : 
     125               0 :     virtual ~nsDiskCacheEntryInfo() {}
     126                 :     
     127                 :     const char* Key() { return mDiskEntry->Key(); }
     128                 :     
     129                 : private:
     130                 :     const char *        mDeviceID;
     131                 :     nsDiskCacheEntry *  mDiskEntry;
     132                 : };
     133                 : 
     134                 : 
     135                 : #endif /* _nsDiskCacheEntry_h_ */

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