mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-04 15:40:49 +00:00
89 lines
1.8 KiB
C++
89 lines
1.8 KiB
C++
|
//
|
||
|
|
// AutoReleasePool.h
|
||
|
|
//
|
||
|
|
// $Id: //poco/1.4/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.
|
||
|
|
//
|
||
|
|
// SPDX-License-Identifier: BSL-1.0
|
||
|
|
//
|
||
|
|
|
||
|
|
|
||
|
|
#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
|