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/Mutex.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/Uncopyable.h> 00035 #include <pthread.h> 00036 00037 namespace icl{ 00038 namespace utils{ 00039 00041 class Lockable; 00044 00045 00054 class Mutex : public Uncopyable{ 00055 public: 00056 00058 enum MutexType { 00059 //#ifndef ICL_SYSTEM_WINDOWS 00061 mutexTypeNormal = PTHREAD_MUTEX_NORMAL, 00063 mutexTypeRecursive = PTHREAD_MUTEX_RECURSIVE 00064 //#else 00065 00066 //#endif 00067 } type; 00068 00070 00073 Mutex(MutexType type = mutexTypeNormal):type(type){ 00074 //#ifndef ICL_SYSTEM_WINDOWS 00075 pthread_mutexattr_init(&a); 00076 pthread_mutexattr_settype(&a, type); 00077 pthread_mutex_init(&m,&a); 00078 //#else 00079 00080 //#endif 00081 } 00083 ~Mutex(){ 00084 //#ifndef ICL_SYSTEM_WINDOWS 00085 pthread_mutex_destroy(&m); 00086 //#else 00087 00088 //#endif 00089 } 00091 void lock(){ 00092 //#ifndef ICL_SYSTEM_WINDOWS 00093 pthread_mutex_lock(&m); 00094 //#else 00095 00096 //#endif 00097 } 00099 00102 int trylock(){ 00103 //#ifndef ICL_SYSTEM_WINDOWS 00104 return pthread_mutex_trylock(&m); 00105 //#else 00106 00107 //#endif 00108 } 00109 00111 void unlock(){ 00112 //#ifndef ICL_SYSTEM_WINDOWS 00113 pthread_mutex_unlock(&m); 00114 //#else 00115 00116 //#endif 00117 } 00118 00120 class Locker : public Uncopyable{ 00121 public: 00123 Locker(Mutex *m); 00124 00126 Locker(Mutex &m); 00127 00129 ICLUtils_API Locker(const Lockable *l); 00130 00132 ICLUtils_API Locker(const Lockable &l); 00133 00135 ~Locker(); 00136 private: 00138 Mutex *m; 00139 }; 00140 private: 00142 pthread_mutex_t m; 00144 pthread_mutexattr_t a; 00145 }; 00146 00147 00149 inline Mutex::Locker::Locker(Mutex *m):m(m){ 00150 m->lock(); 00151 } 00152 inline Mutex::Locker::Locker(Mutex &m):m(&m){ 00153 m.lock(); 00154 } 00155 inline Mutex::Locker::~Locker(){ 00156 m->unlock(); 00157 } 00159 } // namespace utils 00160 } 00161