LCOV - code coverage report
Current view: directory - profile/dirserviceprovider/src - nsProfileLock.h (source / functions) Found Hit Coverage
Test: app.info Lines: 4 0 0.0 %
Date: 2012-06-02 Functions: 2 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       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                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2002
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Conrad Carlen <ccarlen@netscape.com>
      24                 :  *   Brendan Eich <brendan@mozilla.org>
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      28                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : #ifndef __nsProfileLock_h___
      41                 : #define __nsProfileLock_h___
      42                 : 
      43                 : #include "nsILocalFile.h"
      44                 : 
      45                 : class nsIProfileUnlocker;
      46                 : 
      47                 : #if defined (XP_WIN)
      48                 : #include <windows.h>
      49                 : #endif
      50                 : 
      51                 : #if defined (XP_OS2)
      52                 : #define INCL_DOSERRORS
      53                 : #define INCL_DOSFILEMGR
      54                 : #include <os2.h>
      55                 : #endif
      56                 : 
      57                 : #if defined (XP_UNIX)
      58                 : #include <signal.h>
      59                 : #include "prclist.h"
      60                 : #endif
      61                 : 
      62                 : class nsProfileLock
      63                 : #if defined (XP_UNIX)
      64                 :   : public PRCList
      65                 : #endif
      66                 : {
      67                 : public:
      68                 :                             nsProfileLock();
      69                 :                             nsProfileLock(nsProfileLock& src);
      70                 : 
      71                 :                             ~nsProfileLock();
      72                 :  
      73                 :     nsProfileLock&          operator=(nsProfileLock& rhs);
      74                 :                        
      75                 :     /**
      76                 :      * Attempt to lock a profile directory.
      77                 :      *
      78                 :      * @param aProfileDir  [in] The profile directory to lock.
      79                 :      * @param aUnlocker    [out] Optional. This is only returned when locking
      80                 :      *                     fails with NS_ERROR_FILE_ACCESS_DENIED, and may not
      81                 :      *                     be returned at all.
      82                 :      * @throws NS_ERROR_FILE_ACCESS_DENIED if the profile is locked.
      83                 :      */
      84                 :     nsresult                Lock(nsILocalFile* aProfileDir, nsIProfileUnlocker* *aUnlocker);
      85                 : 
      86                 :     /**
      87                 :      * Unlock a profile directory.  If you're unlocking the directory because
      88                 :      * the application is in the process of shutting down because of a fatal
      89                 :      * signal, set aFatalSignal to true.
      90                 :      */
      91                 :     nsresult                Unlock(bool aFatalSignal = false);
      92                 : 
      93                 :     /**
      94                 :      * Get the modification time of a replaced profile lock, otherwise 0.
      95                 :      */
      96                 :     nsresult                GetReplacedLockTime(PRInt64* aResult);
      97                 : 
      98                 : private:
      99                 :     bool                    mHaveLock;
     100                 :     PRInt64                 mReplacedLockTime;
     101                 : 
     102                 : #if defined (XP_WIN)
     103                 :     HANDLE                  mLockFileHandle;
     104                 : #elif defined (XP_OS2)
     105                 :     LHANDLE                 mLockFileHandle;
     106                 : #elif defined (XP_UNIX)
     107                 : 
     108                 :     struct RemovePidLockFilesExiting {
     109               0 :         RemovePidLockFilesExiting() {}
     110               0 :         ~RemovePidLockFilesExiting() {
     111               0 :             RemovePidLockFiles(false);
     112               0 :         }
     113                 :     };
     114                 : 
     115                 :     static void             RemovePidLockFiles(bool aFatalSignal);
     116                 :     static void             FatalSignalHandler(int signo
     117                 : #ifdef SA_SIGINFO
     118                 :                                                , siginfo_t *info, void *context
     119                 : #endif
     120                 :                                                );
     121                 :     static PRCList          mPidLockList;
     122                 : 
     123                 :     nsresult                LockWithFcntl(nsILocalFile *aLockFile);
     124                 : 
     125                 :     /**
     126                 :      * @param aHaveFcntlLock if true, we've already acquired an fcntl lock so this
     127                 :      * lock is merely an "obsolete" lock to keep out old Firefoxes
     128                 :      */
     129                 :     nsresult                LockWithSymlink(nsILocalFile *aLockFile, bool aHaveFcntlLock);
     130                 : 
     131                 :     char*                   mPidLockFileName;
     132                 :     int                     mLockFileDesc;
     133                 : #endif
     134                 : 
     135                 : };
     136                 : 
     137                 : #endif /* __nsProfileLock_h___ */

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