UCommon
|
00001 // Copyright (C) 2006-2010 David Sugar, Tycho Softworks. 00002 // 00003 // This file is part of GNU uCommon C++. 00004 // 00005 // GNU uCommon C++ is free software: you can redistribute it and/or modify 00006 // it under the terms of the GNU Lesser General Public License as published 00007 // by the Free Software Foundation, either version 3 of the License, or 00008 // (at your option) any later version. 00009 // 00010 // GNU uCommon C++ is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 // GNU Lesser General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU Lesser General Public License 00016 // along with GNU uCommon C++. If not, see <http://www.gnu.org/licenses/>. 00017 00025 #ifndef _UCOMMON_ATOMIC_H_ 00026 #define _UCOMMON_ATOMIC_H_ 00027 00028 #ifndef _UCOMMON_CONFIG_H_ 00029 #include <ucommon/platform.h> 00030 #endif 00031 00032 NAMESPACE_UCOMMON 00033 00042 class __EXPORT atomic 00043 { 00044 public: 00048 static const bool simulated; 00049 00055 class __EXPORT counter 00056 { 00057 private: 00058 volatile long value; 00059 00060 public: 00061 counter(long initial = 0); 00062 00063 long operator++(); 00064 long operator--(); 00065 long operator+=(long offset); 00066 long operator-=(long offset); 00067 00068 inline operator long() 00069 {return (long)(value);}; 00070 00071 inline long operator*() 00072 {return value;}; 00073 }; 00074 00080 class __EXPORT spinlock 00081 { 00082 private: 00083 volatile long value; 00084 00085 public: 00089 spinlock(); 00090 00096 bool acquire(void); 00097 00101 void release(void); 00102 }; 00103 }; 00104 00105 END_NAMESPACE 00106 00107 #endif