map-scheduler.cc

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/*
 * Copyright (c) 2006 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>
 * The idea to use a std c++ map came from GTNetS
 */
 
#include "map-scheduler.h"
 
#include "assert.h"
#include "event-impl.h"
#include "log.h"
 
#include <string>
 
namespace ns3
{
 
NS_LOG_COMPONENT_DEFINE("MapScheduler");
 
NS_OBJECT_ENSURE_REGISTERED(MapScheduler);
 
TypeId
MapScheduler::GetTypeId()
{
    static TypeId tid = TypeId("ns3::MapScheduler")
                            .SetParent<Scheduler>()
                            .SetGroupName("Core")
                            .AddConstructor<MapScheduler>();
    return tid;
}
 
MapScheduler::MapScheduler()
{
    NS_LOG_FUNCTION(this);
}
 
MapScheduler::~MapScheduler()
{
    NS_LOG_FUNCTION(this);
}
 
void
MapScheduler::Insert(const Event& ev)
{
    NS_LOG_FUNCTION(this << ev.impl << ev.key.m_ts << ev.key.m_uid);
    std::pair<EventMapI, bool> result;
    result = m_list.insert(std::make_pair(ev.key, ev.impl));
    NS_ASSERT(result.second);
}
 
bool
MapScheduler::IsEmpty() const
{
    NS_LOG_FUNCTION(this);
    return m_list.empty();
}
 
Scheduler::Event
MapScheduler::PeekNext() const
{
    NS_LOG_FUNCTION(this);
    auto i = m_list.begin();
    NS_ASSERT(i != m_list.end());
 
    Event ev;
    ev.impl = i->second;
    ev.key = i->first;
    NS_LOG_DEBUG(this << ": " << ev.impl << ", " << ev.key.m_ts << ", " << ev.key.m_uid);
    return ev;
}
 
Scheduler::Event
MapScheduler::RemoveNext()
{
    NS_LOG_FUNCTION(this);
    auto i = m_list.begin();
    NS_ASSERT(i != m_list.end());
    Event ev;
    ev.impl = i->second;
    ev.key = i->first;
    m_list.erase(i);
    NS_LOG_DEBUG("@" << this << ": " << ev.impl << ", " << ev.key.m_ts << ", " << ev.key.m_uid);
    return ev;
}
 
void
MapScheduler::Remove(const Event& ev)
{
    NS_LOG_FUNCTION(this << ev.impl << ev.key.m_ts << ev.key.m_uid);
    auto i = m_list.find(ev.key);
    NS_ASSERT(i->second == ev.impl);
    m_list.erase(i);
}
 
} // namespace ns3