97 lines
2.7 KiB
C++
97 lines
2.7 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2007 Georgia Tech Research Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: George Riley <riley@ece.gatech.edu>
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* Adapted from original code in object.h by:
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* Authors: Gustavo Carneiro <gjcarneiro@gmail.com>,
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* Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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*/
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#ifndef __REF_COUNT_BASE_H__
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#define __REF_COUNT_BASE_H__
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#include <stdint.h>
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namespace ns3 {
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/**
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* \brief a base class that provides implementations of reference counting
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* operations.
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*
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* A base class that provides implementations of reference counting
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* operations, for classes that wish to use the templatized smart
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* pointer for memory management but that do not wish to derive from
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* class ns3::Object.
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*
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*/
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class RefCountBase
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{
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public:
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RefCountBase();
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RefCountBase (const RefCountBase &o);
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RefCountBase &operator = (const RefCountBase &o);
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virtual ~RefCountBase ();
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/**
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* Increment the reference count. This method should not be called
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* by user code. RefCountBase instances are expected to be used in
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* conjunction with the Ptr template which would make calling Ref
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* unecessary and dangerous.
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*/
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inline void Ref (void) const;
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/**
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* Decrement the reference count. This method should not be called
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* by user code. RefCountBase instances are expected to be used in
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* conjunction with the Ptr template which would make calling Ref
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* unecessary and dangerous.
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*/
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inline void Unref (void) const;
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/**
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* Get the reference count of the object. Normally not needed; for language bindings.
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*/
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uint32_t GetReferenceCount (void) const;
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private:
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// Note we make this mutable so that the const methods can still
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// change it.
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mutable uint32_t m_count; // Reference count
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};
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} // namespace ns3
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namespace ns3 {
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// Implementation of the in-line methods
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void
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RefCountBase::Ref (void) const
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{
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m_count++;
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}
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void
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RefCountBase::Unref (void) const
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{
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m_count--;
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if (m_count == 0)
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{ // All references removed, ok to delete
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delete this;
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}
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}
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} // namespace ns3
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#endif /* __REF_COUNT_BASE_H__*/
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