/usr/include/ns3/simulation-singleton.h is in libns3-dev 3.13+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /* -*- 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 SIMULATION_SINGLETON_H
#define SIMULATION_SINGLETON_H
namespace ns3 {
/**
* This singleton class template ensures that the type
* for which we want a singleton has a lifetime bounded
* by the simulation lifetime. That it, the underlying
* type will be automatically deleted upon a users' call
* to Simulator::Destroy.
*/
template <typename T>
class SimulationSingleton
{
public:
/**
* \returns the instance underlying this singleton.
*
* This instance will be automatically deleted when the
* user calls ns3::Simulator::Destroy.
*/
static T *Get (void);
private:
static T **GetObject (void);
static void DeleteObject (void);
};
} // namespace ns3
#include "simulator.h"
namespace ns3 {
template <typename T>
T *
SimulationSingleton<T>::Get (void)
{
T ** ppobject = GetObject ();
return *ppobject;
}
template <typename T>
T **
SimulationSingleton<T>::GetObject (void)
{
static T *pobject = 0;
if (pobject == 0)
{
pobject = new T ();
Simulator::ScheduleDestroy (&SimulationSingleton<T>::DeleteObject);
}
return &pobject;
}
template <typename T>
void
SimulationSingleton<T>::DeleteObject (void)
{
T **ppobject = GetObject ();
delete (*ppobject);
*ppobject = 0;
}
} // namespace ns3
#endif /* SIMULATION_SINGLETON_H */
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