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109 lines
3.1 KiB
C++
109 lines
3.1 KiB
C++
//
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// AutoReleasePool.h
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//
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// $Id: //poco/Main/Foundation/include/Poco/AutoReleasePool.h#2 $
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//
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// Library: Foundation
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// Package: Core
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// Module: AutoReleasePool
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//
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// Definition of the AutoReleasePool class.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_AutoReleasePool_INCLUDED
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#define Foundation_AutoReleasePool_INCLUDED
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#include "Poco/Foundation.h"
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#include <list>
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namespace Poco {
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template <class C>
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class AutoReleasePool
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/// An AutoReleasePool implements simple garbage collection for
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/// reference-counted objects.
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/// It temporarily takes ownwership of reference-counted objects that
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/// nobody else wants to take ownership of and releases them
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/// at a later, appropriate point in time.
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///
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/// Note: The correct way to add an object hold by an AutoPtr<> to
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/// an AutoReleasePool is by invoking the AutoPtr's duplicate()
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/// method. Example:
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/// AutoReleasePool<C> arp;
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/// AutoPtr<C> ptr = new C;
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/// ...
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/// arp.add(ptr.duplicate());
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{
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public:
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AutoReleasePool()
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/// Creates the AutoReleasePool.
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{
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}
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~AutoReleasePool()
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/// Destroys the AutoReleasePool and releases
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/// all objects it currently holds.
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{
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release();
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}
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void add(C* pObject)
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/// Adds the given object to the AutoReleasePool.
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/// The object's reference count is not modified
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{
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if (pObject)
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_list.push_back(pObject);
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}
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void release()
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/// Releases all objects the AutoReleasePool currently holds
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/// by calling each object's release() method.
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{
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while (!_list.empty())
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{
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_list.front()->release();
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_list.pop_front();
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}
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}
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private:
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typedef std::list<C*> ObjectList;
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ObjectList _list;
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};
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} // namespace Poco
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#endif // Foundation_AutoReleasePool_INCLUDED
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