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<html><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><!--Converted with jLaTeX2HTML 2002 (1.62) JA patch-1.4patched version by: Kenshi Muto, Debian Project.LaTeX2HTML 2002 (1.62),original version by: Nikos Drakos, CBLU, University of Leeds* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan* with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --><HTML><HEAD><TITLE>11. Timers</TITLE><META NAME="description" CONTENT="11. Timers"><META NAME="keywords" CONTENT="everything"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META NAME="Generator" CONTENT="jLaTeX2HTML v2002 JA patch-1.4"><META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"><LINK REL="STYLESHEET" HREF="everything.css" tppabs="http://www.isi.edu/nsnam/ns/doc/everything.css"><LINK REL="next" HREF="node127.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node127.html"><LINK REL="previous" HREF="node99.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node99.html"><LINK REL="up" HREF="node29.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node29.html"><LINK REL="next" HREF="node122.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node122.html"></HEAD><BODY ><!--Navigation Panel--><A NAME="tex2html3150" HREF="node122.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node122.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html3144" HREF="node29.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node29.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html3138" HREF="node120.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node120.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html3146" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html3148" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html3151" HREF="node122.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node122.html">11.1 C++ abstract base</A><B> Up:</B> <A NAME="tex2html3145" HREF="node29.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node29.html">2 Simulator Basics</A><B> Previous:</B> <A NAME="tex2html3139" HREF="node120.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node120.html">10.9 Commands at a</A>   <B> <A NAME="tex2html3147" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html3149" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H1><A NAME="SECTION03800000000000000000"></A><A NAME="chap:timers"></A><BR>11. Timers</H1><P>Timers may be implemented in C++ or OTcl. In C++, timers are based on an abstract base class defined in timer-handler.h. They are most often used in agents, but the framework is general enough to be used by other objects. The discussionbelow is oriented towards the use of timers in agents.<P>The procedures and functions described in this chapter can be found intcl/ex/timer.tcl, and timer-handler.{cc, h}.<P>In OTcl, a simple timer class is defined in tcl/ex/timer.tcl. Subclasses can be derived to provide a simple mechanism for scheduling events at the OTcl level.<P><BR><HR><!--Table of Child-Links--><A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A><UL><LI><A NAME="tex2html3152" HREF="node122.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node122.html">11.1 C++ abstract base class TimerHandler</A><UL><LI><A NAME="tex2html3153" HREF="node123.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node123.html">11.1.1 Definition of a new timer</A><LI><A NAME="tex2html3154" HREF="node124.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node124.html">11.1.2 Example: Tcp retransmission timer</A></UL><BR><LI><A NAME="tex2html3155" HREF="node125.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node125.html">11.2 OTcl Timer class</A><LI><A NAME="tex2html3156" HREF="node126.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node126.html">11.3 Commands at a glance</A></UL><!--End of Table of Child-Links--><BR><HR><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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