OpenTTD: src/misc/countedobj.cpp Source File

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countedobj.cpp
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1 /* $Id: countedobj.cpp 27379 2015-08-10 20:04:31Z frosch $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
6 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
7 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8 */
9
12 #include "../stdafx.h"
13
14 #include "countedptr.hpp"
15
16 #include "../safeguards.h"
17
18 int32 SimpleCountedObject::AddRef()
19 {
20 return ++m_ref_cnt;
21 }
22
23 int32 SimpleCountedObject::Release()
24 {
25 int32 res = --m_ref_cnt;
26 assert(res >= 0);
27 if (res == 0) {
28 try {
29 FinalRelease(); // may throw, for example ScriptTest/ExecMode
30 } catch (...) {
31 delete this;
32 throw;
33 }
34 delete this;
35 }
36 return res;
37 }