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shared-data.hpp

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Christian Schulte, 2017
00008  *
00009  *  This file is part of Gecode, the generic constraint
00010  *  development environment:
00011  *     http://www.gecode.org
00012  *
00013  *  Permission is hereby granted, free of charge, to any person obtaining
00014  *  a copy of this software and associated documentation files (the
00015  *  "Software"), to deal in the Software without restriction, including
00016  *  without limitation the rights to use, copy, modify, merge, publish,
00017  *  distribute, sublicense, and/or sell copies of the Software, and to
00018  *  permit persons to whom the Software is furnished to do so, subject to
00019  *  the following conditions:
00020  *
00021  *  The above copyright notice and this permission notice shall be
00022  *  included in all copies or substantial portions of the Software.
00023  *
00024  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00025  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00026  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00027  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00028  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00029  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00030  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00031  *
00032  */
00033 
00034 namespace Gecode {
00035 
00037   template<class Data>
00038   class SharedData : public SharedHandle {
00039   protected:
00041     class SDO : public SharedHandle::Object {
00042     public:
00044       const Data d;
00046       SDO(const Data& d0);
00048       virtual ~SDO(void);
00049     };
00050   public:
00052     SharedData(const Data& d);
00054     SharedData(void);
00056     SharedData(const SharedData& sd);
00058     SharedData& operator =(const SharedData& sd);
00060     const Data& operator ()(void) const;
00062     ~SharedData(void);
00063   };
00064 
00065 
00066   template<class Data>
00067   forceinline
00068   SharedData<Data>::SDO::SDO(const Data& d0)
00069     : d(d0) {}
00070 
00071   template<class Data>
00072   forceinline
00073   SharedData<Data>::SDO::~SDO(void) {}
00074 
00075 
00076   template<class Data>
00077   forceinline
00078   SharedData<Data>::SharedData(const Data& d) 
00079     : SharedHandle(new SDO(d)) {}
00080 
00081   template<class Data>
00082   forceinline
00083   SharedData<Data>::SharedData(void) {}
00084 
00085   template<class Data>
00086   forceinline
00087   SharedData<Data>::SharedData(const SharedData<Data>& sd)
00088     : SharedHandle(sd) {}
00089 
00090   template<class Data>
00091   forceinline SharedData<Data>&
00092   SharedData<Data>::operator =(const SharedData<Data>& sd) {
00093     return static_cast<SharedData&>(SharedHandle::operator =(sd));
00094   }
00095 
00096   template<class Data>
00097   forceinline const Data&
00098   SharedData<Data>::operator ()(void) const {
00099     return static_cast<SDO*>(object())->d;
00100   }
00101 
00102   template<class Data>
00103   forceinline
00104   SharedData<Data>::~SharedData(void) {}
00105 
00106 }
00107 
00108 // STATISTICS: kernel-other