00001 // 00002 // $Id: shared.cpp 2 2008-03-01 20:58:50Z kulibali $ 00003 // 00004 // Copyright (c) 2008, The Periapsis Project. All rights reserved. 00005 // 00006 // Redistribution and use in source and binary forms, with or without 00007 // modification, are permitted provided that the following conditions are 00008 // met: 00009 // 00010 // * Redistributions of source code must retain the above copyright notice, 00011 // this list of conditions and the following disclaimer. 00012 // 00013 // * Redistributions in binary form must reproduce the above copyright 00014 // notice, this list of conditions and the following disclaimer in the 00015 // documentation and/or other materials provided with the distribution. 00016 // 00017 // * Neither the name of the The Periapsis Project nor the names of its 00018 // contributors may be used to endorse or promote products derived from 00019 // this software without specific prior written permission. 00020 // 00021 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 00022 // IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 00023 // TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00024 // PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 00025 // OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00026 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00027 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00028 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00029 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00030 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00031 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00033 00034 #include "data/shared.hpp" 00035 00036 namespace gsgl 00037 { 00038 00039 namespace data 00040 { 00041 00042 shared_object::shared_object() 00043 : data_object(), ref_count(0) 00044 { 00045 } // shared_object::shared_object() 00046 00047 00048 shared_object::~shared_object() 00049 { 00050 } // shared_object::~shared_object() 00051 00052 00053 void shared_object::attach() 00054 { 00055 ++ref_count; 00056 } // shared_object::attach() 00057 00058 00059 bool shared_object::detach() 00060 { 00061 if (0 == --ref_count) 00062 { 00063 delete this; 00064 return true; 00065 } 00066 00067 return false; 00068 } // shared_object::detach() 00069 00070 } // namespace data 00071 00072 } // namespace gsgl 00073