Image Component Library (ICL)
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00001 /******************************************************************** 00002 ** Image Component Library (ICL) ** 00003 ** ** 00004 ** Copyright (C) 2006-2013 CITEC, University of Bielefeld ** 00005 ** Neuroinformatics Group ** 00006 ** Website: www.iclcv.org and ** 00007 ** http://opensource.cit-ec.de/projects/icl ** 00008 ** ** 00009 ** File : ICLUtils/src/ICLUtils/Semaphore.h ** 00010 ** Module : ICLUtils ** 00011 ** Authors: Christof Elbrechter ** 00012 ** ** 00013 ** ** 00014 ** GNU LESSER GENERAL PUBLIC LICENSE ** 00015 ** This file may be used under the terms of the GNU Lesser General ** 00016 ** Public License version 3.0 as published by the ** 00017 ** ** 00018 ** Free Software Foundation and appearing in the file LICENSE.LGPL ** 00019 ** included in the packaging of this file. Please review the ** 00020 ** following information to ensure the license requirements will ** 00021 ** be met: http://www.gnu.org/licenses/lgpl-3.0.txt ** 00022 ** ** 00023 ** The development of this software was supported by the ** 00024 ** Excellence Cluster EXC 277 Cognitive Interaction Technology. ** 00025 ** The Excellence Cluster EXC 277 is a grant of the Deutsche ** 00026 ** Forschungsgemeinschaft (DFG) in the context of the German ** 00027 ** Excellence Initiative. ** 00028 ** ** 00029 ********************************************************************/ 00030 00031 #pragma once 00032 00033 #include <ICLUtils/CompatMacros.h> 00034 #include <ICLUtils/ShallowCopyable.h> 00035 00036 00037 namespace icl{ 00038 namespace utils{ 00039 00041 class ICLUtils_API SemaphoreImpl; 00042 class ICLUtils_API SemaphoreImplDelOp{ 00043 public: static void delete_func(SemaphoreImpl *impl); 00044 }; 00048 00049 class ICLUtils_API Semaphore : public ShallowCopyable<SemaphoreImpl, SemaphoreImplDelOp>{ 00050 public: 00052 Semaphore(int n=1); 00053 00055 void operator++(int dummy); 00056 00058 void operator--(int dummy); 00059 00061 void operator+=(int val); 00062 00064 void operator-=(int val); 00065 00067 void acquire(int val=1){ (*this)-=val; } 00068 00070 void release(int val=1){ (*this)+=val; } 00071 00073 bool tryAcquire(); 00074 00076 bool tryRelease(); 00077 00079 int getValue(); 00080 00082 int getMaxValue(); 00083 }; 00084 00085 } // namespace utils 00086 } 00087