src/surf/ns3/ns3_simulator.cc

   1 /* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "surf/ns3/ns3_simulator.h"
   8 #include "xbt/dict.h"
   9 #include "xbt/log.h"
  10 #include "xbt/sysdep.h"
  11
  12 using namespace ns3;
  13 using namespace std;
  14
  15 xbt_dict_t dict_socket = NULL;
  16
  17 NS3Sim SimulatorNS3;
  18
  19 static void receive_callback(Ptr<Socket> localSocket);
  20 static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace);
  21 static void datasent_callback(Ptr<Socket> localSocket, uint32_t dataSent);
  22 static void StartFlow(Ptr<Socket> sock,
  23     const char *to,
  24     uint16_t port_number);
  25
  26 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simulator_ns3, surf,
  27                                 "Logging specific to the SURF network NS3 module");
  28
  29 // Constructor.
  30 NS3Sim::NS3Sim(){
  31 }
  32 //Destructor.
  33 NS3Sim::~NS3Sim(){
  34 }
  35
  36 /*
  37  * This function create a flow from src to dst
  38  *
  39  * Parameters
  40  *              src: node source
  41  *              dst: node destination
  42  *              port_number: The port number to use
  43  *              start: the time the communication start
  44  *              addr:  ip address
  45  *              totalBytes: number of bytes to transmit
  46  */
  47 void NS3Sim::create_flow_NS3(
  48                 Ptr<Node> src,
  49                 Ptr<Node> dst,
  50                 uint16_t port_number,
  51                 double start,
  52                 const char *addr,
  53                 uint32_t totalBytes,
  54                 void * action)
  55 {
  56         if(!dict_socket) dict_socket = xbt_dict_new();
  57
  58         PacketSinkHelper sink ("ns3::TcpSocketFactory",
  59                                                         InetSocketAddress (Ipv4Address::GetAny(),
  60                                                         port_number));
  61         sink.Install (dst);
  62         Ptr<Socket> sock = Socket::CreateSocket (src,
  63                                                         TcpSocketFactory::GetTypeId());
  64
  65         MySocket *mysocket = new MySocket();
  66         mysocket->totalBytes = totalBytes;
  67         mysocket->remaining = totalBytes;
  68         mysocket->bufferedBytes = 0;
  69         mysocket->sentBytes = 0;
  70         mysocket->finished = 0;
  71         mysocket->action = action;
  72         xbt_dict_set(dict_socket,(const char*)&sock, mysocket,NULL);
  73         sock->Bind(InetSocketAddress(port_number));
  74         XBT_INFO("Create flow starting to %fs + %fs = %fs",start-ns3_time(), ns3_time(), start);
  75         Simulator::Schedule (Seconds(start-ns3_time()),&StartFlow, sock, addr, port_number);
  76 //      Simulator::Schedule (Seconds(0.0),&StartFlow, sock, addr, port_number);
  77
  78 }
  79
  80 void* NS3Sim::get_action_from_socket(void *socket){
  81         return ((MySocket *)socket)->action;
  82 }
  83
  84 char NS3Sim::get_finished(void *socket){
  85         return ((MySocket *)socket)->finished;
  86 }
  87
  88 double NS3Sim::get_remains_from_socket(void *socket){
  89         return ((MySocket *)socket)->remaining;
  90 }
  91
  92 double NS3Sim::get_sent_from_socket(void *socket){
  93   return ((MySocket *)socket)->sentBytes;
  94 }
  95
  96 void NS3Sim::simulator_start(double min){
  97   if(min > 0.0)
  98     Simulator::Stop(Seconds(min));
  99   XBT_DEBUG("Start simulator");
 100   Simulator::Run ();
 101 }
 102
 103 static void receive_callback(Ptr<Socket> localSocket){
 104   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 105
 106   if (mysocket->finished == 0){
 107     mysocket->finished = 1;
 108     XBT_DEBUG("recv_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 109     XBT_DEBUG("Stop simulator at %f seconds", Simulator::Now().GetSeconds());
 110     Simulator::Stop(Seconds(0.0));
 111     Simulator::Run();
 112   }
 113 }
 114
 115 static void send_callback(Ptr<Socket> localSocket, uint32_t txSpace){
 116         uint8_t *data = (uint8_t*)malloc(sizeof(uint8_t)*txSpace);
 117         MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 118         if (mysocket->remaining == 0){
 119                   //all data was already buffered (and socket was already closed), just return
 120                   return;
 121         }
 122         while (mysocket->sentBytes < mysocket->totalBytes
 123                         && localSocket->GetTxAvailable () > 0)
 124         {
 125       uint32_t toWrite = min ((mysocket->remaining), txSpace);
 126       toWrite = min (toWrite, localSocket->GetTxAvailable ());
 127       int amountSent = localSocket->Send (&data[0], toWrite, 0);
 128
 129       if(amountSent < 0)
 130           return;
 131           (mysocket->sentBytes) += amountSent;
 132           (mysocket->remaining) -= amountSent;
 133       XBT_DEBUG("send_cb of F[%p, %p, %d] (%d/%d) %d buffered", mysocket, mysocket->action, mysocket->totalBytes, mysocket->remaining, mysocket->totalBytes, amountSent);
 134
 135     }
 136         if ((mysocket->sentBytes) >= mysocket->totalBytes){
 137                 localSocket->Close();
 138         }
 139 }
 140
 141 static void datasent_callback(Ptr<Socket> localSocket, uint32_t dataSent){
 142   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 143   mysocket->sentBytes += dataSent;
 144   XBT_DEBUG("datasent_cb of F[%p, %p, %d] %d sent", mysocket, mysocket->action, mysocket->totalBytes, dataSent);
 145 }
 146
 147 static void normalClose_callback(Ptr<Socket> localSocket){
 148   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 149   XBT_DEBUG("normalClose_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 150   receive_callback (localSocket);
 151 }
 152
 153 static void errorClose_callback(Ptr<Socket> localSocket){
 154   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 155   XBT_DEBUG("errorClose_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 156   xbt_die("NS3: a socket was closed anormally");
 157 }
 158
 159 static void succeededConnect_callback(Ptr<Socket> localSocket){
 160   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 161   XBT_DEBUG("succeededConnect_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 162 }
 163
 164 static void failedConnect_callback(Ptr<Socket> localSocket){
 165   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&localSocket);
 166   XBT_DEBUG("failedConnect_cb of F[%p, %p, %d]", mysocket, mysocket->action, mysocket->totalBytes);
 167   xbt_die("NS3: a socket failed to connect");
 168 }
 169
 170 static void StartFlow(Ptr<Socket> sock,
 171     const char *to,
 172     uint16_t port_number)
 173 {
 174   InetSocketAddress serverAddr (to, port_number);
 175
 176   sock->Connect(serverAddr);
 177   sock->SetSendCallback (MakeCallback (&send_callback));
 178   sock->SetRecvCallback (MakeCallback (&receive_callback));
 179   sock->SetDataSentCallback (MakeCallback (&datasent_callback));
 180   sock->SetConnectCallback (MakeCallback (&succeededConnect_callback), MakeCallback (&failedConnect_callback));
 181   sock->SetCloseCallbacks (MakeCallback (&normalClose_callback), MakeCallback (&errorClose_callback));
 182
 183   MySocket* mysocket = (MySocket*)xbt_dict_get_or_null(dict_socket,(char*)&sock);
 184   XBT_DEBUG("startFlow_cb of F[%p, %p, %d] dest=%s port=%d", mysocket, mysocket->action, mysocket->totalBytes, to, port_number);
 185 }