tools.cc
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上传日期:2015-12-11
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- //
- // tools.cc : Implements a few utility functions
- // authors : Fabio Silva
- //
- // Copyright (C) 2000-2002 by the University of Southern California
- // $Id: tools.cc,v 1.17 2008/03/27 05:24:46 tom_henderson Exp $
- //
- // 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.
- //
- // 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.
- #include <math.h>
- #include "tools.hh"
- #ifdef NS_DIFFUSION
- #include "scheduler.h"
- #include "rng.h"
- #include "random.h"
- #endif // NS_DIFFUSION
- int global_debug_level = DEBUG_DEFAULT;
- void GetTime(struct timeval *tv)
- {
- #ifdef NS_DIFFUSION
- double time;
- long sec, usec;
- time = Scheduler::instance().clock();
- // sec = lrint (time);
- sec = (long) rint (time);
- // usec = lrint ((time - sec) * 1000000);
- usec = (long) rint ((time - sec) * 1000000);
- tv->tv_sec = sec;
- tv->tv_usec = usec;
- DiffPrint(DEBUG_NEVER, "tv->sec = %ld, tv->usec = %ldn", tv->tv_sec, tv->tv_usec);
- #else
- gettimeofday(tv, NULL);
- #endif // NS_DIFFUSION
- }
- void SetSeed(struct timeval *tv)
- {
- #ifdef NS_DIFFUSION
- // Don't need to do anything since NS's RNG is seeded using
- // otcl proc ns-random <seed>
- #else
- srand(tv->tv_usec);
- #endif // NS_DIFFUSION
- }
- int GetRand()
- {
- #ifdef NS_DIFFUSION
- return (Random::random());
- #else
- return (rand());
- #endif // NS_DIFFUSION
- }
- void DiffPrint(int msg_debug_level, const char *fmt, ...)
- {
- va_list ap;
- va_start(ap, fmt);
- if (global_debug_level >= msg_debug_level){
- // Print message
- vfprintf(stderr, fmt, ap);
- fflush(NULL);
- }
- va_end(ap);
- }
- void DiffPrintWithTime(int msg_debug_level, const char *fmt, ...)
- {
- struct timeval tv;
- va_list ap;
- va_start(ap, fmt);
- if (global_debug_level >= msg_debug_level){
- // Get time
- GetTime(&tv);
- // Print Time
- fprintf(stderr, "%ld.%06ld : ", tv.tv_sec, (long int) tv.tv_usec);
- // Print message
- vfprintf(stderr, fmt, ap);
- fflush(NULL);
- }
- va_end(ap);
- }