apoorva
fabea45044
git-subtree-dir: find-object git-subtree-mainline: 9bd639e88c266d990f53b2799ba476d34cfc9c89 git-subtree-split: 635efcd6220cabc258b88c54b1ae4279035bbe31
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
/*
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* utilite is a cross-platform library with
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* useful utilities for fast and small developing.
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* Copyright (C) 2010 Mathieu Labbe
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*
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* utilite is free library: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* utilite is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef UDESTROYER_H
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#define UDESTROYER_H
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//#include "utilite/UtiLiteExp.h" // DLL export/import defines
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/**
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* This class is used to delete a dynamically created
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* objects. It was mainly designed to remove dynamically created Singleton.
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* Created on the stack of a Singleton, when the
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* application is finished, his destructor make sure that the
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* Singleton is deleted.
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*
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*/
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template <class T>
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class UDestroyer
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{
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public:
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/**
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* The constructor. Set the doomed object (take ownership of the object). The object is deleted
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* when this object is deleted.
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*/
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UDestroyer(T* doomed = 0) : doomed_(doomed) {}
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~UDestroyer()
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{
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if(doomed_)
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{
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delete doomed_;
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doomed_ = 0;
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}
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}
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/**
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* Set the doomed object. If a doomed object is already set, the function returns false.
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* @param doomed the doomed object
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* @return false if an object is already set and the new object is not null, otherwise true
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*/
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bool setDoomed(T* doomed)
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{
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if(doomed_ && doomed)
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{
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return false;
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}
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doomed_ = doomed;
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return true;
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}
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private:
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// Prevent users from making copies of a
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// Destroyer to avoid double deletion:
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UDestroyer(const UDestroyer<T>&);
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void operator=(const UDestroyer<T>&);
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private:
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T* doomed_;
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};
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#endif // UDESTROYER_H
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