LCOV - code coverage report
Current view: directory - js/src - jslock.h (source / functions) Found Hit Coverage
Test: app.info Lines: 8 8 100.0 %
Date: 2012-06-02 Functions: 2 2 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 8; 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 Mozilla Communicator client code, released
      17                 :  * March 31, 1998.
      18                 :  *
      19                 :  * The Initial Developer of the Original Code is
      20                 :  * Netscape Communications Corporation.
      21                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      22                 :  * the Initial Developer. All Rights Reserved.
      23                 :  *
      24                 :  * Contributor(s):
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      28                 :  * or 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                 : #ifndef jslock_h__
      40                 : #define jslock_h__
      41                 : 
      42                 : #include "jsapi.h"
      43                 : 
      44                 : #ifdef JS_THREADSAFE
      45                 : 
      46                 : # include "pratom.h"
      47                 : # include "prlock.h"
      48                 : # include "prcvar.h"
      49                 : # include "prthread.h"
      50                 : # include "prinit.h"
      51                 : 
      52                 : # define JS_ATOMIC_INCREMENT(p)      PR_ATOMIC_INCREMENT((PRInt32 *)(p))
      53                 : # define JS_ATOMIC_DECREMENT(p)      PR_ATOMIC_DECREMENT((PRInt32 *)(p))
      54                 : # define JS_ATOMIC_ADD(p,v)          PR_ATOMIC_ADD((PRInt32 *)(p), (PRInt32)(v))
      55                 : # define JS_ATOMIC_SET(p,v)          PR_ATOMIC_SET((PRInt32 *)(p), (PRInt32)(v))
      56                 : 
      57                 : #else  /* JS_THREADSAFE */
      58                 : 
      59                 : # define JS_ATOMIC_INCREMENT(p)      (++*(p))
      60                 : # define JS_ATOMIC_DECREMENT(p)      (--*(p))
      61                 : # define JS_ATOMIC_ADD(p,v)          (*(p) += (v))
      62                 : # define JS_ATOMIC_SET(p,v)          (*(p) = (v))
      63                 : 
      64                 : #endif /* JS_THREADSAFE */
      65                 : 
      66                 : namespace js {
      67                 : 
      68                 : class AutoAtomicIncrement
      69                 : {
      70                 :     int32_t *p;
      71                 :     JS_DECL_USE_GUARD_OBJECT_NOTIFIER
      72                 : 
      73                 :   public:
      74              19 :     AutoAtomicIncrement(int32_t *p JS_GUARD_OBJECT_NOTIFIER_PARAM)
      75              19 :       : p(p) {
      76              19 :         JS_GUARD_OBJECT_NOTIFIER_INIT;
      77              19 :         JS_ATOMIC_INCREMENT(p);
      78              19 :     }
      79                 : 
      80              38 :     ~AutoAtomicIncrement() {
      81              19 :         JS_ATOMIC_DECREMENT(p);
      82              19 :     }
      83                 : };
      84                 : 
      85                 : }  /* namespace js */
      86                 : 
      87                 : #endif /* jslock_h___ */

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