mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-15 03:21:09 +01:00
99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
//
|
|
// RefCountedObject.h
|
|
//
|
|
// $Id: //poco/svn/Foundation/include/Poco/RefCountedObject.h#2 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Core
|
|
// Module: RefCountedObject
|
|
//
|
|
// Definition of the RefCountedObject 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_RefCountedObject_INCLUDED
|
|
#define Foundation_RefCountedObject_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include "Poco/Mutex.h"
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
class Foundation_API RefCountedObject
|
|
/// A base class for objects that employ
|
|
/// reference counting based garbage collection.
|
|
///
|
|
/// Reference-counted objects inhibit construction
|
|
/// by copying and assignment.
|
|
{
|
|
public:
|
|
RefCountedObject();
|
|
/// Creates the RefCountedObject.
|
|
/// The initial reference count is one.
|
|
|
|
void duplicate() const;
|
|
/// Increments the object's reference count.
|
|
|
|
void release() const;
|
|
/// Decrements the object's reference count
|
|
/// and deletes the object if the count
|
|
/// reaches zero.
|
|
|
|
int referenceCount() const;
|
|
/// Returns the reference count.
|
|
|
|
protected:
|
|
virtual ~RefCountedObject();
|
|
/// Destroys the RefCountedObject.
|
|
|
|
private:
|
|
RefCountedObject(const RefCountedObject&);
|
|
RefCountedObject& operator = (const RefCountedObject&);
|
|
|
|
mutable int _rc;
|
|
mutable FastMutex _rcMutex;
|
|
};
|
|
|
|
|
|
//
|
|
// inlines
|
|
//
|
|
inline int RefCountedObject::referenceCount() const
|
|
{
|
|
return _rc;
|
|
}
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_RefCountedObject_INCLUDED
|