A Discrete-Event Network Simulator
API
time-printer.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2018 Lawrence Livermore National Laboratory
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Peter D. Barnes, Jr. <pdbarnes@llnl.gov>
19  */
20 
21 #include "log.h"
22 #include "time-printer.h"
23 #include "simulator.h" // Now()
24 #include "nstime.h"
25 
26 #include <iomanip>
27 
34 namespace ns3 {
35 
36 NS_LOG_COMPONENT_DEFINE ("TimePrinter");
37 
38 void
39 DefaultTimePrinter (std::ostream &os)
40 {
41  std::ios_base::fmtflags ff = os.flags (); // Save stream flags
42  std::streamsize oldPrecision = os.precision ();
43  os << std::fixed;
44  switch (Time::GetResolution ())
45  {
46  // *NS_CHECK_STYLE_OFF*
47  case Time::US : os << std::setprecision (6); break;
48  case Time::NS : os << std::setprecision (9); break;
49  case Time::PS : os << std::setprecision (12); break;
50  case Time::FS : os << std::setprecision (15); break;
51  // *NS_CHECK_STYLE_ON*
52 
53  default:
54  // default C++ precision of 5
55  os << std::setprecision (5);
56  }
57  os << Simulator::Now ().As (Time::S);
58 
59  os << std::setprecision (oldPrecision);
60  os.flags (ff); // Restore stream flags
61 }
62 
63 
64 } // namespace ns3
65 
ns3::Simulator::Now
static Time Now(void)
Return the current simulation virtual time.
Definition: simulator.cc:195
ns3::Time::GetResolution
static enum Unit GetResolution(void)
Definition: time.cc:410
ns3::Time::US
@ US
microsecond
Definition: nstime.h:116
ns3::Time::PS
@ PS
picosecond
Definition: nstime.h:118
ns3::Time::FS
@ FS
femtosecond
Definition: nstime.h:119
ns3::Time::S
@ S
second
Definition: nstime.h:114
ns3::Time::NS
@ NS
nanosecond
Definition: nstime.h:117
ns3::Time::As
TimeWithUnit As(const enum Unit unit=Time::AUTO) const
Attach a unit to a Time, to facilitate output in a specific unit.
Definition: time.cc:418
NS_LOG_COMPONENT_DEFINE
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:205
log.h
Debug message logging.
ns3
Every class exported by the ns3 library is enclosed in the ns3 namespace.
ns3::DefaultTimePrinter
void DefaultTimePrinter(std::ostream &os)
Default Time printer.
Definition: time-printer.cc:39
nstime.h
Declaration of classes ns3::Time and ns3::TimeWithUnit, and the TimeValue implementation classes.
simulator.h
ns3::Simulator declaration.
time-printer.h
Declaration of ns3::TimePrinter function pointer type and ns3::DefaultTimePrinter function.