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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* utilities.h
* Copyright (C) 1997 by the University of Southern California
* $Id: utilities.h,v 1.7 2005/08/25 18:58:11 johnh 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.
*
*
* The copyright of this module includes the following
* linking-with-specific-other-licenses addition:
*
* In addition, as a special exception, the copyright holders of
* this module give you permission to combine (via static or
* dynamic linking) this module 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 module 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 module
* 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.
*
*/
//
// utilities.h
// Miscellaneous useful definitions, including debugging routines.
//
// Author:
// Mohit Talwar (mohit@catarina.usc.edu)
//
// $Header: /cvsroot/nsnam/ns-2/rap/utilities.h,v 1.7 2005/08/25 18:58:11 johnh Exp $
#ifndef UTILITIES_H
#define UTILITIES_H
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include <memory.h>
#include "agent.h"
#include "tclcl.h"
#include "packet.h"
#include "address.h"
#include "ip.h"
#include "random.h"
#include "raplist.h"
// Functions...
extern FILE * DebugEnable(unsigned int nodeid);
// Print debug message if flag is enabled
extern void Debug (int debugFlag, FILE *log, char* format, ...);
// Data structures
class DoubleListElem {
public:
DoubleListElem() : prev_(0), next_(0) {}
virtual ~DoubleListElem () {}
DoubleListElem* next() const { return next_; }
DoubleListElem* prev() const { return prev_; }
virtual void detach() {
if (prev_ != 0) prev_->next_ = next_;
if (next_ != 0) next_->prev_ = prev_;
prev_ = next_ = 0;
}
// Add new element s before this one
virtual void insert(DoubleListElem *s) {
s->next_ = this;
s->prev_ = prev_;
if (prev_ != 0) prev_->next_ = s;
prev_ = s;
}
// Add new element s after this one
virtual void append(DoubleListElem *s) {
s->next_ = next_;
s->prev_ = this;
if (next_ != 0) next_->prev_ = s;
next_ = s;
}
private:
DoubleListElem *prev_, *next_;
};
class DoubleList {
public:
DoubleList() : head_(0), tail_(0) {}
virtual ~DoubleList() {}
virtual void destroy();
DoubleListElem* head() { return head_; }
DoubleListElem* tail() { return tail_; }
void detach(DoubleListElem *e) {
if (head_ == e)
head_ = e->next();
if (tail_ == e)
tail_ = e->prev();
e->detach();
}
void insert(DoubleListElem *src, DoubleListElem *dst) {
dst->insert(src);
if (dst == head_)
head_ = src;
}
void append(DoubleListElem *src, DoubleListElem *dst) {
dst->append(src);
if (dst == tail_)
tail_ = src;
}
protected:
DoubleListElem *head_, *tail_;
};
#endif // UTILITIES_H
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