estimator.cc
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) Xerox Corporation 1997. 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 as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * 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.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linking this file statically or dynamically with other modules is making
- * a combined work based on this file. Thus, the terms and conditions of
- * the GNU General Public License cover the whole combination.
- *
- * In addition, as a special exception, the copyright holders of this file
- * give you permission to combine this file with free software programs or
- * libraries that are released under the GNU LGPL and with code included in
- * the standard release of ns-2 under the Apache 2.0 license or under
- * otherwise-compatible licenses with advertising requirements (or modified
- * versions of such code, with unchanged license). You may copy and
- * distribute such a system following the terms of the GNU GPL for this
- * file and the licenses of the other code concerned, provided that you
- * include the source code of that other code when and as the GNU GPL
- * requires distribution of source code.
- *
- * Note that people who make modified versions of this file are not
- * obligated to grant this special exception for their modified versions;
- * it is their choice whether to do so. The GNU General Public License
- * gives permission to release a modified version without this exception;
- * this exception also makes it possible to release a modified version
- * which carries forward this exception.
- */
- #ifndef lint
- static const char rcsid[] =
- "@(#) $Header: /cvsroot/nsnam/ns-2/adc/estimator.cc,v 1.8 2005/08/26 05:05:27 tomh Exp $";
- #endif
- #include "estimator.h"
- Estimator::Estimator() : meas_mod_(0),avload_(0.0),est_timer_(this), measload_(0.0), tchan_(0), omeasload_(0), oavload_(0)
- {
- bind("period_",&period_);
- bind("src_", &src_);
- bind("dst_", &dst_);
- avload_.tracer(this);
- avload_.name(""Estimated Util."");
- measload_.tracer(this);
- measload_.name(""Measured Util."");
- }
- int Estimator::command(int argc, const char*const* argv)
- {
- Tcl& tcl = Tcl::instance();
- if (argc==2) {
- if (strcmp(argv[1],"load-est") == 0) {
- tcl.resultf("%.3f",double(avload_));
- return(TCL_OK);
- } else if (strcmp(argv[1],"link-utlzn") == 0) {
- tcl.resultf("%.3f",meas_mod_->bitcnt()/period_);
- return(TCL_OK);
- }
- }
- if (argc == 3) {
- if (strcmp(argv[1], "attach") == 0) {
- int mode;
- const char* id = argv[2];
- tchan_ = Tcl_GetChannel(tcl.interp(), (char*)id, &mode);
- if (tchan_ == 0) {
- tcl.resultf("Estimator: trace: can't attach %s for writing", id);
- return (TCL_ERROR);
- }
- return (TCL_OK);
- }
- if (strcmp(argv[1], "setbuf") == 0) {
- /* some sub classes actually do something here */
- return(TCL_OK);
- }
- }
- return NsObject::command(argc,argv);
- }
- void Estimator::setmeasmod (MeasureMod *measmod)
- {
- meas_mod_=measmod;
- }
- void Estimator::start()
- {
- avload_=0;
- measload_ = 0;
- est_timer_.resched(period_);
- }
- void Estimator::stop()
- {
- est_timer_.cancel();
- }
- void Estimator::timeout(int)
- {
- estimate();
- est_timer_.resched(period_);
- }
- void Estimator_Timer::expire(Event* /*e*/)
- {
- est_->timeout(0);
- }
- void Estimator::trace(TracedVar* v)
- {
- char wrk[500];
- double *p, newval;
- /* check for right variable */
- if (strcmp(v->name(), ""Estimated Util."") == 0) {
- p = &oavload_;
- }
- else if (strcmp(v->name(), ""Measured Util."") == 0) {
- p = &omeasload_;
- }
- else {
- fprintf(stderr, "Estimator: unknown trace var %sn", v->name());
- return;
- }
- newval = double(*((TracedDouble*)v));
- if (tchan_) {
- int n;
- double t = Scheduler::instance().clock();
- /* f -t 0.0 -s 1 -a SA -T v -n Num -v 0 -o 0 */
- sprintf(wrk, "f -t %g -s %d -a %s:%d-%d -T v -n %s -v %g -o %g",
- t, src_, actype_, src_, dst_, v->name(), newval, *p);
- n = strlen(wrk);
- wrk[n] = 'n';
- wrk[n+1] = 0;
- (void)Tcl_Write(tchan_, wrk, n+1);
-
- }
- *p = newval;
- return;
- }
- void Estimator::setactype(const char* type)
- {
- actype_ = new char[strlen(type)+1];
- strcpy(actype_, type);
- return;
- }