remote-channel-bundle-manager.cc

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/*
 *  Copyright 2013. Lawrence Livermore National Security, LLC.
 *
 * 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: Steven Smith <smith84@llnl.gov>
 *
 */
 
/**
 * \file
 * \ingroup mpi
 * Implementation of class ns3::RemoteChannelBundleManager.
 */
 
#include "remote-channel-bundle-manager.h"
 
#include "null-message-simulator-impl.h"
#include "remote-channel-bundle.h"
 
#include "ns3/simulator.h"
 
namespace ns3
{
 
bool ns3::RemoteChannelBundleManager::g_initialized = false;
ns3::RemoteChannelBundleManager::RemoteChannelMap
    ns3::RemoteChannelBundleManager::g_remoteChannelBundles;
 
Ptr<RemoteChannelBundle>
RemoteChannelBundleManager::Find(uint32_t systemId)
{
    auto kv = g_remoteChannelBundles.find(systemId);
 
    if (kv == g_remoteChannelBundles.end())
    {
        return nullptr;
    }
    else
    {
        return kv->second;
    }
}
 
Ptr<RemoteChannelBundle>
RemoteChannelBundleManager::Add(uint32_t systemId)
{
    NS_ASSERT(!g_initialized);
    NS_ASSERT(g_remoteChannelBundles.find(systemId) == g_remoteChannelBundles.end());
 
    Ptr<RemoteChannelBundle> remoteChannelBundle = Create<RemoteChannelBundle>(systemId);
 
    g_remoteChannelBundles[systemId] = remoteChannelBundle;
 
    return remoteChannelBundle;
}
 
std::size_t
RemoteChannelBundleManager::Size()
{
    return g_remoteChannelBundles.size();
}
 
void
RemoteChannelBundleManager::InitializeNullMessageEvents()
{
    NS_ASSERT(!g_initialized);
 
    for (auto iter = g_remoteChannelBundles.begin(); iter != g_remoteChannelBundles.end(); ++iter)
    {
        Ptr<RemoteChannelBundle> bundle = iter->second;
        bundle->Send(bundle->GetDelay());
 
        NullMessageSimulatorImpl::GetInstance()->ScheduleNullMessageEvent(bundle);
    }
 
    g_initialized = true;
}
 
Time
RemoteChannelBundleManager::GetSafeTime()
{
    NS_ASSERT(g_initialized);
 
    Time safeTime = Simulator::GetMaximumSimulationTime();
 
    for (auto kv = g_remoteChannelBundles.begin(); kv != g_remoteChannelBundles.end(); ++kv)
    {
        safeTime = Min(safeTime, kv->second->GetGuaranteeTime());
    }
 
    return safeTime;
}
 
void
RemoteChannelBundleManager::Destroy()
{
    NS_ASSERT(g_initialized);
 
    g_remoteChannelBundles.clear();
    g_initialized = false;
}
 
} // namespace ns3