00001 /*************************************************************************** 00002 ** 00003 ** This file is part of GpCoreTools. 00004 ** 00005 ** This file may be distributed and/or modified under the terms of the 00006 ** GNU General Public License version 2 or 3 as published by the Free 00007 ** Software Foundation and appearing in the file LICENSE.GPL included 00008 ** in the packaging of this file. 00009 ** 00010 ** This file is distributed in the hope that it will be useful, but WITHOUT 00011 ** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00012 ** FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 00013 ** more details. 00014 ** 00015 ** You should have received a copy of the GNU General Public License 00016 ** along with this program. If not, see <http://www.gnu.org/licenses/>. 00017 ** 00018 ** See http://www.geopsy.org for more information. 00019 ** 00020 ** Created: 2009-06-27 00021 ** Authors: 00022 ** Marc Wathelet 00023 ** Marc Wathelet (LGIT, Grenoble, France) 00024 ** 00025 ***************************************************************************/ 00026 00027 #ifndef INFINITELOOP_H 00028 #define INFINITELOOP_H 00029 00030 #include "GpCoreToolsDLLExport.h" 00031 00032 namespace GpCoreTools { 00033 00034 class GPCORETOOLS_EXPORT InfiniteLoop 00035 { 00036 public: 00037 InfiniteLoop(); 00038 ~InfiniteLoop(); 00039 00040 inline void start(); 00041 inline void stop(); 00042 void wait(); 00043 inline bool isRunning() const; 00044 protected: 00045 inline bool isTerminated() const; 00046 inline void setTerminated(); 00047 private: 00048 enum State {NotRunning, Running, Terminate}; 00049 volatile State _state; 00050 }; 00051 00052 inline void InfiniteLoop::start() 00053 { 00054 _state=Running; 00055 } 00056 00057 inline void InfiniteLoop::stop() 00058 { 00059 if(_state==Running) { 00060 _state=Terminate; 00061 } 00062 } 00063 00064 inline bool InfiniteLoop::isRunning() const 00065 { 00066 return _state!=NotRunning; 00067 } 00068 00069 inline bool InfiniteLoop::isTerminated() const 00070 { 00071 return _state==Terminate; 00072 } 00073 00074 inline void InfiniteLoop::setTerminated() 00075 { 00076 _state=NotRunning; 00077 } 00078 00079 } // namespace GpCoreTools 00080 00081 #endif // INFINITELOOP_H
