SimStream Class Reference

#include <simstream.h>

List of all members.

Public Member Functions
	SimStream ()
	~SimStream ()
int	command (int argc, const char *const *argv)
int	get_streamid ()
void	setLevel (int theValue)
int	getLevel ()
void	setRcv_rate (double theValue)
double	getRcv_rate ()
void	setInst_rx_rate (double theValue)
double	getInst_rx_rate ()
void	setAvg_rx (double theValue)
double	getAvg_rx ()
void	setAvg_tx (double theValue, int level)
void	setLow_tx (double theValue)
void	setMedium_tx (double theValue)
void	setHigh_tx (double theValue)
double	getLow_tx ()
double	getMedium_tx ()
double	getHigh_tx ()
void	compare ()
Public Attributes
SimStream *	next
RTPSession *	sessions_
Protected Member Functions
void	enter (RTPSession *)
void	go_up (int level)
void	go_down (int level)
Protected Attributes
int	streamid_
int	isSender
int	isReceiver
int	level_
double	rcv_rate_
double	inst_rx_rate_
list< double >	rx_lst
double	avg_rx_
double	low_tx_
double	medium_tx_
double	high_tx_
double	low_threshold_
double	medium_threshold_
double	high_threshold_

---

Detailed Description

Definition at line 52 of file simstream.h.

---

Constructor & Destructor Documentation

SimStream::SimStream

(

)

no argument constructor

Definition at line 62 of file simstream.cc.

References avg_rx_, high_threshold_, high_tx_, inst_rx_rate_, isReceiver, isSender, level_, low_threshold_, low_tx_, medium_threshold_, medium_tx_, and rcv_rate_.

        : sessions_(0),streamid_(-1)
{
        bind_bool("isSender",&isSender);        
        bind_bool("isReceiver",&isReceiver);
        bind("level_",&level_);
        bind("rcv_rate_",&rcv_rate_);
        inst_rx_rate_ = 0;
        avg_rx_ = 0;
        bind("low_tx_",&low_tx_);
        bind("medium_tx_",&medium_tx_);
        bind("high_tx_",&high_tx_);
        bind("low_threshold_", &low_threshold_);
        bind("medium_threshold_", &medium_threshold_);
        bind("high_threshold_", &high_threshold_);

        
}

SimStream::~SimStream

(

)

destructor

Definition at line 84 of file simstream.cc.

References RTPSession::next, rx_lst, and sessions_.

{
        while (sessions_ != 0) {
                RTPSession* s = sessions_;
                sessions_ = sessions_->next;
                delete s;
        }
        rx_lst.~list<double>();
        
        
}

---

Member Function Documentation

int SimStream::command	(	int	argc,
		const char *const *	argv
	)

the command function that handles TCL commands

Definition at line 114 of file simstream.cc.

References enter(), and streamid_.

{
        if (argc == 3) {
                if (strcmp(argv[1], "session") == 0) {
                        RTPSession* s = (RTPSession*)TclObject::lookup(argv[2]);
                        enter(s);
                        return (TCL_OK);
                }
                if (strcmp(argv[1], "stream-id") == 0) {
                        streamid_ = atoi(argv[2]);
                        return (TCL_OK);
                }
        }

        return (TclObject::command(argc, argv));
}

int SimStream::get_streamid

(

)

[inline]

Definition at line 60 of file simstream.h.

References streamid_.

{return streamid_;}

void SimStream::setLevel

(

int

theValue

)

[inline]

Definition at line 61 of file simstream.h.

References level_.

{level_ = theValue;}

int SimStream::getLevel

(

)

[inline]

Definition at line 62 of file simstream.h.

References level_.

{return level_;}

void SimStream::setRcv_rate

(

double

theValue

)

[inline]

Definition at line 63 of file simstream.h.

References rcv_rate_.

Referenced by RTPSession::build_report().

{rcv_rate_ = theValue;}

double SimStream::getRcv_rate

(

)

[inline]

Definition at line 64 of file simstream.h.

References rcv_rate_.

{       return rcv_rate_;}

void SimStream::setInst_rx_rate

(

double

theValue

)

adds the instantaneius receiving rate to the list

Parameters:

theValue

the value to be added

Definition at line 136 of file simstream.cc.

References avg_rx_.

Referenced by RTPSession::smooth_rate().

{ 
        avg_rx_ = avg_rx_ * 0.5 + 0.5 * theValue;
        
}

double SimStream::getInst_rx_rate

(

)

[inline]

Definition at line 66 of file simstream.h.

References inst_rx_rate_.

{ return inst_rx_rate_;}

void SimStream::setAvg_rx

(

double

theValue

)

[inline]

Definition at line 67 of file simstream.h.

References avg_rx_.

{avg_rx_ = theValue;    }

double SimStream::getAvg_rx

(

)

[inline]

Definition at line 68 of file simstream.h.

References avg_rx_.

Referenced by RTPSession::build_report().

{return avg_rx_;}

void SimStream::setAvg_tx	(	double	theValue,
		int	level
	)

sets the average values of all streams

Parameters:

	theValue	the average transmission rate
	level	the stream level

Definition at line 147 of file simstream.cc.

References high_tx_, low_tx_, and medium_tx_.

Referenced by RTPSession::timeout().

{
        if(level==1) {
                low_tx_ =  theValue;
        } else if(level==2) {
                medium_tx_ = theValue;
        } else high_tx_ = theValue;


}

void SimStream::setLow_tx

(

double

theValue

)

[inline]

Definition at line 70 of file simstream.h.

References low_tx_.

Referenced by RTPSession::recv_ctrl().

{low_tx_ = theValue;}

void SimStream::setMedium_tx

(

double

theValue

)

[inline]

Definition at line 71 of file simstream.h.

References medium_tx_.

Referenced by RTPSession::recv_ctrl().

{medium_tx_ = theValue;}

void SimStream::setHigh_tx

(

double

theValue

)

[inline]

Definition at line 72 of file simstream.h.

References high_tx_.

Referenced by RTPSession::recv_ctrl().

{high_tx_=theValue;}

double SimStream::getLow_tx

(

)

[inline]

Definition at line 73 of file simstream.h.

References low_tx_.

Referenced by RTPSession::build_report().

{return low_tx_;}

double SimStream::getMedium_tx

(

)

[inline]

Definition at line 74 of file simstream.h.

References medium_tx_.

Referenced by RTPSession::build_report().

{       return medium_tx_;}

double SimStream::getHigh_tx

(

)

[inline]

Definition at line 75 of file simstream.h.

References high_tx_.

Referenced by RTPSession::build_report().

{return high_tx_;}

void SimStream::compare

(

)

campares the average receiving rate with stream limits and average transmission rates

Definition at line 163 of file simstream.cc.

References avg_rx_, DOWN_LEVEL_FACTOR, go_down(), go_up(), high_threshold_, high_tx_, level_, medium_threshold_, medium_tx_, RATE_FACTOR, and UP_LEVEL_FACTOR.

Referenced by RTPSession::recv().

{

        switch(level_) {
                case 1  :
                        
                        if(avg_rx_ >= UP_LEVEL_FACTOR * medium_threshold_ && avg_rx_ >= medium_tx_ * RATE_FACTOR) {

                         go_up(level_);
                        }
                        break;
                case 2  :
                
                        if(avg_rx_ <= DOWN_LEVEL_FACTOR * medium_threshold_) {

                                go_down(level_);
                        } else if(avg_rx_ >= UP_LEVEL_FACTOR * high_threshold_ && avg_rx_ >= high_tx_ * RATE_FACTOR) {

                                go_up(level_);
                        }
                        break;
                case 3  :
        
                        if(avg_rx_ <= DOWN_LEVEL_FACTOR * high_threshold_ ) {

                        go_down(level_);
                        }
                        break;
                default :       
                printf("Error...no level found\n");
        }
                
}

void SimStream::enter

(

RTPSession *

s

)

[protected]

enters a session

Parameters:

s

the session to be added

Definition at line 100 of file simstream.cc.

References RTPSession::next, NOW, sessions_, RTPSession::srcid(), and streamid_.

Referenced by command().

{
        
        printf("Time:%f Stream:%d ...I add session %d \n", NOW,streamid_ , s->srcid());
        s->next = sessions_;
        sessions_ = s;
        
}

void SimStream::go_up

(

int

level

)

[protected]

go up one level

Parameters:

level

the current level

Definition at line 201 of file simstream.cc.

References avg_rx_, high_tx_, low_tx_, medium_tx_, NOW, and streamid_.

Referenced by compare().

{
        Tcl::instance().evalf("%s go-up %d",name(),level);
        printf("Time:%f Stream:%d level:%d I go UP  Avg_rx: %f Avg_Tx_Low:%f Avg_Tx_Medium:%f Avg_Tx_High:%f \n", NOW,streamid_ , level, avg_rx_ * 8, low_tx_ * 8, medium_tx_ * 8, high_tx_ * 8  );
        
}

void SimStream::go_down

(

int

level

)

[protected]

go down one level

Parameters:

level

the current level

Definition at line 212 of file simstream.cc.

References avg_rx_, high_tx_, low_tx_, medium_tx_, NOW, and streamid_.

Referenced by compare().

{
        Tcl::instance().evalf("%s go-down %d",name(),level);
        printf("Time:%f Stream:%d level:%d I go DOWN  Avg_rx: %f Avg_Tx_Low:%f Avg_Tx_Medium:%f Avg_Tx_High:%f \n", NOW,streamid_ , level, avg_rx_ * 8, low_tx_ * 8, medium_tx_ * 8, high_tx_ * 8  );
}

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Member Data Documentation

SimStream* SimStream::next

Definition at line 56 of file simstream.h.

RTPSession* SimStream::sessions_

Definition at line 57 of file simstream.h.

Referenced by enter(), and ~SimStream().

int SimStream::streamid_ [protected]

the stream id

Definition at line 85 of file simstream.h.

Referenced by command(), enter(), get_streamid(), go_down(), and go_up().

int SimStream::isSender [protected]

binded from tcl script

Definition at line 87 of file simstream.h.

Referenced by SimStream().

int SimStream::isReceiver [protected]

binded from the tcl script

Definition at line 89 of file simstream.h.

Referenced by SimStream().

int SimStream::level_ [protected]

the level of the stream. see definition in ns-default.tcl

Definition at line 91 of file simstream.h.

Referenced by compare(), getLevel(), setLevel(), and SimStream().

double SimStream::rcv_rate_ [protected]

the receiving rate

Definition at line 93 of file simstream.h.

Referenced by getRcv_rate(), setRcv_rate(), and SimStream().

double SimStream::inst_rx_rate_ [protected]

instantaneous receiving rate

Definition at line 95 of file simstream.h.

Referenced by getInst_rx_rate(), and SimStream().

list<double> SimStream::rx_lst [protected]

a list to keep all calculating TCP-friendly estimations over Δt

Definition at line 97 of file simstream.h.

Referenced by ~SimStream().

double SimStream::avg_rx_ [protected]

the average receiving rate

Definition at line 99 of file simstream.h.

Referenced by compare(), getAvg_rx(), go_down(), go_up(), setAvg_rx(), setInst_rx_rate(), and SimStream().

double SimStream::low_tx_ [protected]

transmission rate of the low capacity stream

Definition at line 101 of file simstream.h.

Referenced by getLow_tx(), go_down(), go_up(), setAvg_tx(), setLow_tx(), and SimStream().

double SimStream::medium_tx_ [protected]

transmission rate of the medium capacity stream

Definition at line 103 of file simstream.h.

Referenced by compare(), getMedium_tx(), go_down(), go_up(), setAvg_tx(), setMedium_tx(), and SimStream().

double SimStream::high_tx_ [protected]

transmission rate of the high capacity stream

Definition at line 105 of file simstream.h.

Referenced by compare(), getHigh_tx(), go_down(), go_up(), setAvg_tx(), setHigh_tx(), and SimStream().

double SimStream::low_threshold_ [protected]

the low linit of the low capacity stream

Definition at line 109 of file simstream.h.

Referenced by SimStream().

double SimStream::medium_threshold_ [protected]

the low linit of the medium capacity stream

Definition at line 111 of file simstream.h.

Referenced by compare(), and SimStream().

double SimStream::high_threshold_ [protected]

the low linit of the high capacity stream

Definition at line 113 of file simstream.h.

Referenced by compare(), and SimStream().

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The documentation for this class was generated from the following files:

• ns-allinone-2.30/ns-2.30/rtp/simstream.h
• ns-allinone-2.30/ns-2.30/rtp/simstream.cc