Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef _NULLCANVAS_USAGECOUNTER_HXX
      21             : #define _NULLCANVAS_USAGECOUNTER_HXX
      22             : 
      23             : #include <osl/interlck.h>
      24             : #include <boost/current_function.hpp>
      25             : 
      26             : namespace nullcanvas
      27             : {
      28             :     /** Little resource tracking counter.
      29             : 
      30             :         When using this object, a global use counter, specific to the
      31             :         given type is incremented on object construction, and
      32             :         decremented on object destruction.
      33             :      */
      34             :     template< class Type > class UsageCounter
      35             :     {
      36             :     public:
      37           0 :         UsageCounter()
      38             :         {
      39             :             OSL_TRACE( "%s, %d objects currently in use.\n",
      40             :                        BOOST_CURRENT_FUNCTION,
      41             :                        osl_atomic_increment( &s_nCount ) );
      42           0 :         }
      43             : 
      44           0 :         ~UsageCounter()
      45             :         {
      46           0 :             const sal_Int32 nCount( osl_atomic_decrement( &s_nCount ) );
      47             : 
      48             :             if( !nCount )
      49             :             {
      50             :                 OSL_TRACE( "%s, last instance deleted.\n",
      51             :                            BOOST_CURRENT_FUNCTION );
      52             :             }
      53             :             else
      54             :             {
      55             :                 OSL_TRACE( "%s, %d instances left.\n",
      56             :                            BOOST_CURRENT_FUNCTION,
      57             :                            nCount );
      58             :             }
      59           0 :         }
      60             : 
      61             :     private:
      62             :         static oslInterlockedCount s_nCount;
      63             :     };
      64             : 
      65             :     template< class Type > oslInterlockedCount UsageCounter<Type>::s_nCount = 0;
      66             : }
      67             : 
      68             : #endif /* _NULLCANVAS_USAGECOUNTER_HXX */
      69             : 
      70             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */