netwerk/cache/src/nsDiskCache.h

   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 nsCacheDevice.h, released
  17  * March 9, 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  *   Patrick Beard   <beard@netscape.com>
  26  *   Gordon Sheridan <gordon@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
  43 #ifndef _nsDiskCache_h_
  44 #define _nsDiskCache_h_
  45
  46 #include "nsCacheEntry.h"
  47
  48 #ifdef XP_WIN
  49 #include <winsock.h>  // for htonl/ntohl
  50 #endif
  51
  52
  53 class nsDiskCache {
  54 public:
  55     enum {
  56             kCurrentVersion = 0x0001000B      // format = 16 bits major version/16 bits minor version
  57     };
  58
  59     enum { kData, kMetaData };
  60
  61     static PLDHashNumber    Hash(const char* key);
  62     static nsresult         Truncate(PRFileDesc *  fd, PRUint32  newEOF);
  63 };
  64
  65 #endif // _nsDiskCache_h_