| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| #ifndef _NULLCANVAS_USAGECOUNTER_HXX |
| #define _NULLCANVAS_USAGECOUNTER_HXX |
| |
| #include <osl/interlck.h> |
| #include <boost/current_function.hpp> |
| |
| namespace nullcanvas |
| { |
| /** Little resource tracking counter. |
| |
| When using this object, a global use counter, specific to the |
| given type is incremented on object construction, and |
| decremented on object destruction. |
| */ |
| template< class Type > class UsageCounter |
| { |
| public: |
| UsageCounter() |
| { |
| OSL_TRACE( "%s, %d objects currently in use.\n", |
| BOOST_CURRENT_FUNCTION, |
| osl_incrementInterlockedCount( &s_nCount ) ); |
| } |
| |
| ~UsageCounter() |
| { |
| const sal_Int32 nCount( osl_decrementInterlockedCount( &s_nCount ) ); |
| |
| if( !nCount ) |
| { |
| OSL_TRACE( "%s, last instance deleted.\n", |
| BOOST_CURRENT_FUNCTION ); |
| } |
| else |
| { |
| OSL_TRACE( "%s, %d instances left.\n", |
| BOOST_CURRENT_FUNCTION, |
| nCount ); |
| } |
| } |
| |
| private: |
| static oslInterlockedCount s_nCount; |
| }; |
| |
| template< class Type > oslInterlockedCount UsageCounter<Type>::s_nCount = 0; |
| } |
| |
| #endif /* _NULLCANVAS_USAGECOUNTER_HXX */ |