00001 /*************************************************************************** 00002 tag: Peter Soetens Mon Jan 19 14:11:26 CET 2004 DataObjectLocked.hpp 00003 00004 DataObjectLocked.hpp - description 00005 ------------------- 00006 begin : Mon January 19 2004 00007 copyright : (C) 2004 Peter Soetens 00008 email : peter.soetens@mech.kuleuven.ac.be 00009 00010 *************************************************************************** 00011 * This library is free software; you can redistribute it and/or * 00012 * modify it under the terms of the GNU General Public * 00013 * License as published by the Free Software Foundation; * 00014 * version 2 of the License. * 00015 * * 00016 * As a special exception, you may use this file as part of a free * 00017 * software library without restriction. Specifically, if other files * 00018 * instantiate templates or use macros or inline functions from this * 00019 * file, or you compile this file and link it with other files to * 00020 * produce an executable, this file does not by itself cause the * 00021 * resulting executable to be covered by the GNU General Public * 00022 * License. This exception does not however invalidate any other * 00023 * reasons why the executable file might be covered by the GNU General * 00024 * Public License. * 00025 * * 00026 * This library is distributed in the hope that it will be useful, * 00027 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00028 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * 00029 * Lesser General Public License for more details. * 00030 * * 00031 * You should have received a copy of the GNU General Public * 00032 * License along with this library; if not, write to the Free Software * 00033 * Foundation, Inc., 59 Temple Place, * 00034 * Suite 330, Boston, MA 02111-1307 USA * 00035 * * 00036 ***************************************************************************/ 00037 00038 #ifndef CORELIB_DATAOBJECT_LOCKED_HPP 00039 #define CORELIB_DATAOBJECT_LOCKED_HPP 00040 00041 00042 #include "../os/MutexLock.hpp" 00043 #include "DataObjectInterface.hpp" 00044 00045 namespace RTT 00046 { namespace base { 00047 00056 template<class T> 00057 class DataObjectLocked 00058 : public DataObjectInterface<T> 00059 { 00060 mutable os::Mutex lock; 00061 00065 T data; 00066 public: 00072 DataObjectLocked( const T& initial_value = T() ) 00073 : data(initial_value) {} 00074 00078 typedef T DataType; 00079 00080 virtual void Get( DataType& pull ) const { os::MutexLock locker(lock); pull = data; } 00081 00082 virtual DataType Get() const { DataType cache; Get(cache); return cache; } 00083 00084 virtual void Set( const DataType& push ) { os::MutexLock locker(lock); data = push; } 00085 00086 virtual void data_sample( const DataType& sample ) { 00087 Set(sample); 00088 } 00089 }; 00090 }} 00091 00092 #endif 00093