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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright 2013. Lawrence Livermore National Security, LLC.
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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: Steven Smith <smith84@llnl.gov>
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*
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*/
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#ifndef NS3_REMOTE_CHANNEL_BUNDLE_MANAGER
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#define NS3_REMOTE_CHANNEL_BUNDLE_MANAGER
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#include <ns3/nstime.h>
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#include <ns3/ptr.h>
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#include <map>
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namespace ns3 {
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class RemoteChannelBundle;
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/*
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* \ingroup mpi
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*
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* \brief Singleton for managing the RemoteChannelBundles for each process.
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*
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* Manages collective tasks associated with the bundle collection.
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*/
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class RemoteChannelBundleManager
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{
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public:
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/**
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* \return remote channel bundle for specified SystemId.
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*/
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static Ptr<RemoteChannelBundle> Find (uint32_t systemId);
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/**
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* Add RemoteChannelBundle from this task to MPI task on other side of the link.
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* Can not be invoked after InitializeNullMessageEvents has been invoked.
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*/
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static Ptr<RemoteChannelBundle> Add (uint32_t systemId);
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/**
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* \return number of remote channel bundles
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*
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*/
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static uint32_t Size (void);
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/**
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* Setup initial Null Message events for every RemoteChannelBundle.
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* All RemoteChannelBundles should be added before this method is invoked.
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*/
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static void InitializeNullMessageEvents (void);
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/**
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* \return safe time across all remote channels.
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*/
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static Time GetSafeTime (void);
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/**
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* Destroy the singleton.
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*/
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static void Destroy (void);
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private:
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/**
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* Private ctor to prevent creation outside of singleton pattern.
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*/
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RemoteChannelBundleManager ()
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{
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}
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~RemoteChannelBundleManager ()
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{
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}
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/*
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* Container for all remote channel bundles for this task.
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*
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* Would be more efficient to use unordered_map when C++11 is adopted for NS3.
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*/
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typedef std::map<uint32_t, Ptr<RemoteChannelBundle> > RemoteChannelMap;
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static RemoteChannelMap g_remoteChannelBundles;
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/*
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* Protect manager class from being initialized twice or incorrect
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* ordering of method calls.
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*/
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static bool g_initialized;
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};
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} // namespace ns3
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#endif
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