utils/bench-simulator.cc
author Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
Fri, 20 Oct 2006 14:17:03 +0200
changeset 131 f4fb87e77034
parent 122 6b8f1eda5c57
child 143 552ff26b4224
permissions -rw-r--r--
change emacs mode to new NS3 elisp mode

/* -*- Mode:NS3; -*- */
/*
 * Copyright (c) 2006 INRIA
 * All rights reserved.
 *
 * 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>
 */

#include "ns3/simulator.h"
#include "ns3/system-wall-clock-ms.h"
#include <iostream>
#include <fstream>
#include <vector>

using namespace ns3;


bool gDebug = false;

class Bench {
public:
    void ReadDistribution (std::istream &istream);
    void SetTotal (uint32_t total);
    void RunBench (void);
private:
    void Cb (void);
    std::vector<uint64_t> m_distribution;
    std::vector<uint64_t>::const_iterator m_current;
    uint32_t m_n;
    uint32_t m_total;
};

void 
Bench::SetTotal (uint32_t total)
{
    m_total = total;
}

void
Bench::ReadDistribution (std::istream &input)
{
    double data;
    while (!input.eof ()) {
        if (input >> data) {
            uint64_t ns = (uint64_t) (data * 1000000000);
            m_distribution.push_back (ns);
        } else {
            input.clear ();
            std::string line;
            input >> line;
        }
    }
}

void
Bench::RunBench (void) 
{
    SystemWallClockMs time;
    double init, simu;
    time.Start ();
    for (std::vector<uint64_t>::const_iterator i = m_distribution.begin ();
         i != m_distribution.end (); i++) {
        Simulator::Schedule (Time::AbsNs (*i), &Bench::Cb, this);
    }
    init = time.End ();

    m_current = m_distribution.begin ();

    time.Start ();
    Simulator::Run ();
    simu = time.End ();

    std::cout <<
        "init n=" << m_distribution.size () << ", time=" << init << "s" << std::endl <<
        "simu n=" << m_n << ", time=" <<simu << "s" << std::endl <<
        "init " << ((double)m_distribution.size ()) / init << " insert/s, avg insert=" <<
        init / ((double)m_distribution.size ())<< "s" << std::endl <<
        "simu " << ((double)m_n) / simu<< " hold/s, avg hold=" << 
        simu / ((double)m_n) << "s" << std::endl
        ;
}

void
Bench::Cb (void)
{
    if (m_n > m_total) {
        return;
    }
    if (m_current == m_distribution.end ()) {
        m_current = m_distribution.begin ();
    }
    if (gDebug) {
        std::cerr << "event at " << Simulator::Now ().S () << "s" << std::endl;
    }
    Simulator::Schedule (Time::AbsNs (*m_current), &Bench::Cb, this);
    m_current++;
    m_n++;
}

int main (int argc, char *argv[])
{
    char const *filename = argv[1];
    std::istream *input;
    argc-=2;
    argv+= 2;
    if (strcmp (filename, "-") == 0) {
        input = &std::cin;
    } else {
        input = new std::ifstream (filename);
    }
    while (argc > 0) {
        if (strcmp ("--list", argv[0]) == 0) {
            Simulator::SetLinkedList ();
        } else if (strcmp ("--heap", argv[0]) == 0) {
            Simulator::SetBinaryHeap ();
        } else if (strcmp ("--map", argv[0]) == 0) {
            Simulator::SetStdMap ();
        } else if (strcmp ("--debug", argv[0]) == 0) {
            gDebug = true;
        } else if (strncmp ("--log=", argv[0],strlen ("--log=")) == 0) {
            char const *filename = argv[0] + strlen ("--log=");
            Simulator::EnableLogTo (filename);
        }
        argc--;
        argv++;
    }
    Bench *bench = new Bench ();
    bench->ReadDistribution (*input);
    bench->SetTotal (20000);
    bench->RunBench ();

    return 0;
}