00001 // Windstille - A Jump'n Shoot Game 00002 // Copyright (C) 2005 Matthias Braun <matze@braunis.de> 00003 // 00004 // This program is free software: you can redistribute it and/or modify 00005 // it under the terms of the GNU General Public License as published by 00006 // the Free Software Foundation, either version 3 of the License, or 00007 // (at your option) any later version. 00008 // 00009 // This program is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 // GNU General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with this program. If not, see <http://www.gnu.org/licenses/>. 00016 00017 #ifndef HEADER_SUPERTUX_UTIL_REFCOUNTER_HPP 00018 #define HEADER_SUPERTUX_UTIL_REFCOUNTER_HPP 00019 00020 #include <assert.h> 00021 00025 class RefCounter 00026 { 00027 public: 00028 RefCounter() 00029 : refcount(0) 00030 { } 00031 00033 void ref() 00034 { 00035 refcount++; 00036 } 00040 void unref() 00041 { 00042 refcount--; 00043 if(refcount <= 0) { 00044 delete this; 00045 } 00046 } 00047 00048 protected: 00049 virtual ~RefCounter() 00050 { 00051 assert(refcount == 0); 00052 } 00053 00054 private: 00055 int refcount; 00056 }; 00057 00058 #endif 00059 00060 /* EOF */