LCOV - code coverage report
Current view: directory - objdir/dist/include - nsAtomicRefcnt.h (source / functions) Found Hit Coverage
Test: app.info Lines: 12 8 66.7 %
Date: 2012-06-02 Functions: 6 4 66.7 %

       1                 : /* ***** BEGIN LICENSE BLOCK *****
       2                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       3                 :  *
       4                 :  * The contents of this file are subject to the Mozilla Public License Version
       5                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       6                 :  * the License. You may obtain a copy of the License at
       7                 :  * http://www.mozilla.org/MPL/
       8                 :  *
       9                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      10                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      11                 :  * for the specific language governing rights and limitations under the
      12                 :  * License.
      13                 :  *
      14                 :  * The Original Code is Mozilla code.
      15                 :  *
      16                 :  * The Initial Developer of the Original Code is the Mozilla Foundation.
      17                 :  * Portions created by the Initial Developer are Copyright (C) 2010
      18                 :  * the Initial Developer. All Rights Reserved.
      19                 :  *
      20                 :  * Contributor(s):
      21                 :  *  Justin Lebar <justin.lebar@gmail.com>
      22                 :  *
      23                 :  * Alternatively, the contents of this file may be used under the terms of
      24                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      25                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      26                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      27                 :  * of those above. If you wish to allow use of your version of this file only
      28                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      29                 :  * use your version of this file under the terms of the MPL, indicate your
      30                 :  * decision by deleting the provisions above and replace them with the notice
      31                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      32                 :  * the provisions above, a recipient may use your version of this file under
      33                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      34                 :  *
      35                 :  * ***** END LICENSE BLOCK ***** */
      36                 : 
      37                 : #ifndef nsAtomicRefcnt_h__
      38                 : #define nsAtomicRefcnt_h__
      39                 : 
      40                 : #include "nscore.h"
      41                 : #include "pratom.h"
      42                 : 
      43                 : class nsAutoRefCnt;
      44                 : 
      45                 : // This header defines functions for modifying refcounts which wrap the
      46                 : // PR_ATOMIC_* macros.
      47                 : 
      48                 : #if defined(XP_WIN)
      49                 : 
      50                 : #if PR_BYTES_PER_LONG == 4
      51                 : typedef volatile long nsAtomicRefcnt;
      52                 : #else
      53                 : #error "Windows should have 4 bytes per long."
      54                 : #endif
      55                 : 
      56                 : #else /* !defined(XP_WIN) */
      57                 : 
      58                 : typedef PRInt32  nsAtomicRefcnt;
      59                 : 
      60                 : #endif
      61                 : 
      62                 : inline PRInt32
      63               0 : NS_AtomicIncrementRefcnt(PRInt32 &refcnt)
      64                 : {
      65               0 :   return PR_ATOMIC_INCREMENT(&refcnt);
      66                 : }
      67                 : 
      68                 : inline nsrefcnt
      69          561827 : NS_AtomicIncrementRefcnt(nsrefcnt &refcnt)
      70                 : {
      71          561827 :   return (nsrefcnt) PR_ATOMIC_INCREMENT((nsAtomicRefcnt*)&refcnt);
      72                 : }
      73                 : 
      74                 : inline nsrefcnt
      75        55688888 : NS_AtomicIncrementRefcnt(nsAutoRefCnt &refcnt)
      76                 : {
      77                 :   // This cast is safe since nsAtomicRefCnt contains just one member, its refcount.
      78        55688888 :   return (nsrefcnt) PR_ATOMIC_INCREMENT((nsAtomicRefcnt*)&refcnt);
      79                 : }
      80                 : 
      81                 : inline nsrefcnt
      82          561492 : NS_AtomicDecrementRefcnt(nsrefcnt &refcnt)
      83                 : {
      84          561492 :   return (nsrefcnt) PR_ATOMIC_DECREMENT((nsAtomicRefcnt*)&refcnt);
      85                 : }
      86                 : 
      87                 : inline nsrefcnt
      88        55684334 : NS_AtomicDecrementRefcnt(nsAutoRefCnt &refcnt)
      89                 : {
      90        55684334 :   return (nsrefcnt) PR_ATOMIC_DECREMENT((nsAtomicRefcnt*)&refcnt);
      91                 : }
      92                 : 
      93                 : inline PRInt32
      94               0 : NS_AtomicDecrementRefcnt(PRInt32 &refcnt)
      95                 : {
      96               0 :   return PR_ATOMIC_DECREMENT(&refcnt);
      97                 : }
      98                 : 
      99                 : #endif

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