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/*
* srm-state.h
* Copyright (C) 1997 by the University of Southern California
* $Id: srm-state.h,v 1.8 2005/08/25 18:58:08 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.
*
*/
//
// Author: Kannan Varadhan <kannan@isi.edu>
// Version Date: Mon Jun 30 15:51:33 PDT 1997
//
// @(#) $Header: /cvsroot/nsnam/ns-2/mcast/srm-state.h,v 1.8 2005/08/25 18:58:08 johnh Exp $ (USC/ISI)
//
#ifndef ns_srm_state_h
#define ns_srm_state_h
#include <assert.h>
class SRMinfo {
public:
SRMinfo* next_;
int sender_;
/* Session messages */
int lsess_; /* # of last session msg received */
int sendTime_; /* Time sess. msg. # sent */
int recvTime_; /* Time sess. msg. # received */
double distance_;
/* Added for ssm, later check if can do for a derived class */
/* Can do better with space for these flags */
int lglbsess_;
int llocsess_;
int lrepsess_;
int repid_;
int senderFlag_;
int scopeFlag_;
#define ACTIVE 1
#define INACTIVE 0
int activeFlag_;
#define SELF_DISTANCE 1
#define REP_DISTANCE 2
#define NO_DISTANCE 0
int distanceFlag_;
/* Data messages */
int ldata_; /* # of last data msg sent */
protected:
char *received_; /* Bit vector of msgs received */
int recvmax_;
#define BITVEC_SIZE_DEFAULT 256 // for (256 * 8) = 2K messages
void resize(int id) {
if (! received_) {
received_ = new char[BITVEC_SIZE_DEFAULT];
recvmax_ = BITVEC_SIZE_DEFAULT * sizeof(char);
(void) memset(received_, '\0', BITVEC_SIZE_DEFAULT);
}
if (recvmax_ <= id) {
int osize, nsize;
nsize = osize = recvmax_;
while (nsize <= id)
nsize *= 2;
osize /= sizeof(char);
nsize /= sizeof(char);
char* nvec = new char[nsize];
(void) memcpy(nvec, received_, osize);
(void) memset(nvec + osize, '\0', osize);
delete[] received_;
received_ = nvec;
recvmax_ = nsize;
}
}
public:
SRMinfo(int sender) : next_(0), sender_(sender),
lsess_(-1), sendTime_(0), recvTime_(0), distance_(1.0),
senderFlag_(0), activeFlag_(ACTIVE), distanceFlag_(NO_DISTANCE),
ldata_(-1), received_(0), recvmax_(-1) {
lglbsess_ = -1;
llocsess_ = -1;
lrepsess_ = -1;
}
~SRMinfo() { delete[] received_; }
char ifReceived(int id) {
assert(id >= 0);
if (id >= recvmax_)
resize(id);
return (received_[id / 8] & (1 << (id % 8)));
}
char setReceived(int id) {
int obit = ifReceived(id);
received_[id / 8] |= (1 << (id % 8));
return obit;
}
char resetReceived(int id) {
int obit = ifReceived(id);
received_[id / 8] &= ~(1 << (id % 8));
return obit;
}
};
#endif /* ns_srm_state_h */
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