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// AutoReleasePool.h
//
// $Id: //poco/1.3/Foundation/include/Poco/AutoReleasePool.h#1 $
//
// Library: Foundation
// Package: Core
// Module: AutoReleasePool
//
// Definition of the AutoReleasePool class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#ifndef Foundation_AutoReleasePool_INCLUDED
#define Foundation_AutoReleasePool_INCLUDED
#include "Poco/Foundation.h"
#include <list>
namespace Poco {
template <class C>
class AutoReleasePool
/// An AutoReleasePool implements simple garbage collection for
/// reference-counted objects.
/// It temporarily takes ownwership of reference-counted objects that
/// nobody else wants to take ownership of and releases them
/// at a later, appropriate point in time.
///
/// Note: The correct way to add an object hold by an AutoPtr<> to
/// an AutoReleasePool is by invoking the AutoPtr's duplicate()
/// method. Example:
/// AutoReleasePool<C> arp;
/// AutoPtr<C> ptr = new C;
/// ...
/// arp.add(ptr.duplicate());
{
public:
AutoReleasePool()
/// Creates the AutoReleasePool.
{
}
~AutoReleasePool()
/// Destroys the AutoReleasePool and releases
/// all objects it currently holds.
{
release();
}
void add(C* pObject)
/// Adds the given object to the AutoReleasePool.
/// The object's reference count is not modified
{
if (pObject)
_list.push_back(pObject);
}
void release()
/// Releases all objects the AutoReleasePool currently holds
/// by calling each object's release() method.
{
while (!_list.empty())
{
_list.front()->release();
_list.pop_front();
}
}
private:
typedef std::list<C*> ObjectList;
ObjectList _list;
};
} // namespace Poco
#endif // Foundation_AutoReleasePool_INCLUDED
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