trafgen.cc
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上传日期:2015-12-11
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) 1997 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Daedalus Research
- * Group at the University of California Berkeley.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * Contributed by the Daedalus Research Group, http://daedalus.cs.berkeley.edu
- *
- */
- #include "trafgen.h"
- #include "agent.h"
- // Need to initialize runnin as 0 to avoid the attempt to cancel
- // unscheduled timer (xuanc 1/14/02)
- // Fix contributed by Frank A. Zdarsky <frank.zdarsky@kom.tu-darmstadt.de>
- TrafficGenerator::TrafficGenerator() : nextPkttime_(-1), running_(0), timer_(this)
- {
- }
- void TrafficGenerator::start()
- {
- init();
- running_ = 1;
- nextPkttime_ = next_interval(size_);
- timer_.resched(nextPkttime_);
- // Enable line below if you want to send immediately upon start
- //timeout();
- }
- void TrafficGenerator::stop()
- {
- if (running_)
- timer_.cancel();
- running_ = 0;
- }
- void TrafficGenerator::timeout()
- {
- if (! running_)
- return;
- /* send a packet */
- send(size_);
- /* figure out when to send the next one */
- nextPkttime_ = next_interval(size_);
- /* schedule it */
- if (nextPkttime_ > 0)
- timer_.resched(nextPkttime_);
- else
- running_ = 0;
- }
- void TrafficTimer::expire(Event *)
- {
- tgen_->timeout();
- }