/usr/include/ns3.27/ns3/singleton.h is in libns3-dev 3.27+dfsg-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2007 INRIA
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
*/
#ifndef SINGLETON_H
#define SINGLETON_H
#include "non-copyable.h"
/**
* \file
* \ingroup access
* ns3::Singleton declaration and template implementation.
*/
namespace ns3 {
/**
* \ingroup access
* \brief A template singleton
*
* This template class can be used to implement the singleton pattern.
* The underlying object will be destroyed automatically when the process
* exits.
*
* For a singleton whose lifetime is bounded by the simulation run,
* not the process, see SimulationSingleton.
*
* To force your `class ExampleS` to be a singleton, inherit from Singleton:
* \code
* class ExampleS : public Singleton<ExampleS> { ... };
* \endcode
*
* Then, to reach the singleton instance, just do
* \code
* ExampleS::Get ()->...;
* \endcode
*
* \note
* If you call Get() again after the object has
* been destroyed, the object will be re-created which will result in a
* memory leak as reported by most memory leak checkers. It is up to the
* user to ensure that Get() is never called from a static variable
* finalizer.
*/
template <typename T>
class Singleton : private NonCopyable
{
public:
/**
* Get a pointer to the singleton instance.
*
* The instance will be automatically deleted when
* the process exits.
*
* \return A pointer to the singleton instance.
*/
static T *Get (void);
};
} // namespace ns3
/********************************************************************
* Implementation of the templates declared above.
********************************************************************/
namespace ns3 {
template <typename T>
T *
Singleton<T>::Get (void)
{
static T object;
return &object;
}
} // namespace ns3
#endif /* SINGLETON_H */
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