sample-log-time-format.cc

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/*
 * 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
 */
 
#include "ns3/command-line.h"
#include "ns3/log.h"
#include "ns3/nstime.h"
#include "ns3/random-variable-stream.h"
#include "ns3/simulator.h"
 
#include <map>
 
using namespace ns3;
 
namespace
{
 
void
ReplacementTimePrinter(std::ostream& os)
{
    os << Simulator::Now().GetSeconds() << "s";
}
 
void
ReplaceTimePrinter()
{
    std::cout << "Replacing time printer function after Simulator::Run ()" << std::endl;
    LogSetTimePrinter(&ReplacementTimePrinter);
}
 
} // unnamed namespace
 
int
main(int argc, char* argv[])
{
    bool replaceTimePrinter = false;
    std::string resolution = "Time::NS";
    LogComponentEnable("RandomVariableStream", LOG_LEVEL_ALL);
    LogComponentEnableAll(LOG_PREFIX_TIME);
 
    std::map<std::string, Time::Unit> resolutionMap = {
        {"Time::US", Time::US},
        {"Time::NS", Time::NS},
        {"Time::PS", Time::PS},
        {"Time::FS", Time::FS},
    };
 
    CommandLine cmd(__FILE__);
    cmd.AddValue("replaceTimePrinter", "replace time printing function", replaceTimePrinter);
    cmd.AddValue("resolution", "time resolution", resolution);
    cmd.Parse(argc, argv);
 
    auto search = resolutionMap.find(resolution);
    if (search != resolutionMap.end())
    {
        Time::SetResolution(search->second);
    }
 
    Ptr<UniformRandomVariable> uniformRv = CreateObject<UniformRandomVariable>();
 
    if (replaceTimePrinter)
    {
        Simulator::Schedule(Seconds(0), &ReplaceTimePrinter);
    }
 
    Simulator::Schedule(NanoSeconds(1), &UniformRandomVariable::SetAntithetic, uniformRv, false);
    Simulator::Schedule(NanoSeconds(123), &UniformRandomVariable::SetAntithetic, uniformRv, false);
    Simulator::Schedule(NanoSeconds(123456),
                        &UniformRandomVariable::SetAntithetic,
                        uniformRv,
                        false);
    Simulator::Schedule(NanoSeconds(123456789),
                        &UniformRandomVariable::SetAntithetic,
                        uniformRv,
                        false);
 
    Simulator::Run();
    Simulator::Destroy();
 
    return 0;
}