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/*
* Copyright (C) 1997 by the University of Southern California
*
* 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.
*
* $Header: /cvsroot/nsnam/nam-1/group.cc,v 1.5 2007/02/12 07:08:43 tom_henderson Exp $
*/
#include <string.h>
#include "group.h"
Group::Group(const char *name, unsigned int addr) :
Animation(0, 0), size_(0), addr_(addr), name_(0)
{
if (name != NULL)
if (*name != 0) {
name_ = new char[strlen(name)+1];
strcpy(name_, name);
}
nodeHash_ = new Tcl_HashTable;
Tcl_InitHashTable(nodeHash_, TCL_ONE_WORD_KEYS);
}
Group::~Group()
{
if (name_ != NULL)
delete name_;
Tcl_DeleteHashTable(nodeHash_);
delete nodeHash_;
}
int Group::join(int id)
{
int newEntry = 1;
Tcl_HashEntry *he = Tcl_CreateHashEntry(nodeHash_, (const char *)id,
&newEntry);
if (he == NULL)
return -1;
if (newEntry) {
Tcl_SetHashValue(he, (ClientData)id);
size_++;
}
return 0;
}
void Group::leave(int id)
{
Tcl_HashEntry *he = Tcl_FindHashEntry(nodeHash_, (const char *)id);
if (he != NULL) {
Tcl_DeleteHashEntry(he);
size_--;
}
}
// Assume mbrs has at least size_ elements
void Group::get_members(int *mbrs)
{
Tcl_HashEntry *he;
Tcl_HashSearch hs;
int i = 0;
for (he = Tcl_FirstHashEntry(nodeHash_, &hs);
he != NULL;
he = Tcl_NextHashEntry(&hs), i++)
mbrs[i] = *(int *)Tcl_GetHashValue(he);
}
void Group::draw(View * nv, double now) {
// Do nothing for now. Will add group visualization later.
}
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