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GK Class Reference

#include <gk.h>

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Collaboration diagram for GK:

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List of all members.

Public Member Functions

 GK (const char *)
virtual void recv (Packet *, Handler *)
virtual void recv (Packet *p, const char *s)
virtual void updateStats (int queuesize)
void resume ()
int blocked () const
void unblock ()
void block ()
int limit ()
int length ()
int byteLength ()
virtual double utilization (void)
virtual void reset ()
virtual void destroy ()
void enqueue (QueueElem< T > *e)
QueueElem< T > * dequeue ()
void detach (QueueElem< T > *e)
QueueElem< T > * getHead ()
int is_empty () const
int size () const
NsObject * target ()
virtual void drop (Packet *p)
virtual void recvOnly (Packet *)
virtual void delay_bind_init_all ()
virtual int delay_bind_dispatch (const char *varName, const char *localName, TclObject *tracer)
int isdebug () const
virtual void debug (const char *fmt,...)

Protected Member Functions

int command (int argc, const char *const *argv)
void enque (Packet *)
Packet * deque ()
void deque_vq ()
void trace (TracedVar *)
void reset ()
void utilUpdate (double int_begin, double int_end, int link_state)
virtual void drop (Packet *p, const char *s)
void send (Packet *p, Handler *h)
void handle (Event *)

Protected Attributes

LinkDelay * link_
PacketQueue * q_
int drop_front_
double ecnlim_
double vq_len
double c_
int mark_flag
double prev_time
double curr_time
int mean_pktsize_
TracedInt curq_
NsObject * EDTrace
char traceType [20]
Tcl_Channel tchan_
int qlim_
int blocked_
int unblock_on_resume_
QueueHandler qh_
PacketQueue * pq_
double true_ave_
double total_time_
double last_change_
double old_util_
double util_weight_
QueueElem< T > * head_
QueueElem< T > * tail_
int size_
NsObject * target_
NsObject * drop_
int debug_

Constructor & Destructor Documentation

GK::GK (  const char *   ) 
 

Definition at line 79 of file gk.cc.

References curq_, drop_front_, ecnlim_, mark_flag, mean_pktsize_, Queue< T >::pq_, prev_time, q_, and vq_len. 

00079                         :link_(NULL), EDTrace(NULL), tchan_(0)
00080 {
00081         q_ = new PacketQueue;
00082         pq_ = q_;
00083         bind_bool("drop_front_", &drop_front_);
00084         bind("ecnlim_", &ecnlim_); 
00085         bind("mean_pktsize_", &mean_pktsize_); 
00086         bind("curq_", &curq_); 
00087         vq_len = 0.0;
00088         prev_time = 0.0;
00089         mark_flag = 0;
00090 }

Member Function Documentation

template<class T>
void Queue< T >::block (   )  [inline, inherited]
 

Definition at line 131 of file queue.h.

References Queue< T >::blocked_. 

00131 { blocked_ = 1; }

template<class T>
int Queue< T >::blocked (   )  const [inline, inherited]
 

Definition at line 129 of file queue.h.

References Queue< T >::blocked_.

Referenced by CBQClass::recv(). 

00129 { return (blocked_ == 1); }

template<class T>
int Queue< T >::byteLength (   )  [inline, inherited]
 

Definition at line 135 of file queue.h.

References PacketQueue::byteLength(), and Queue< T >::pq_. 

00135 { return pq_->byteLength(); }   /* number of bytes *

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int GK::command (  int  argc,
const char *const *  argv
)  [protected, virtual]
 

Reimplemented from Connector.

Definition at line 92 of file gk.cc.

References c_, Connector::command(), link_, mean_pktsize_, Queue< T >::pq_, q_, and tchan_. 

00092                                                 {
00093         Tcl& tcl = Tcl::instance();
00094   if (argc == 3) {
00095           if (strcmp(argv[1], "link") == 0) {
00096                   LinkDelay* del = (LinkDelay*)TclObject::lookup(argv[2]);
00097                   if (del == 0) {
00098                           return(TCL_ERROR);
00099                   }
00100                   // set capacity now
00101                         link_ = del;
00102                   c_ = del->bandwidth();
00103                         c_ = c_ / (8.0 * mean_pktsize_);
00104                   return (TCL_OK);
00105           }
00106           if (!strcmp(argv[1], "packetqueue-attach")) {
00107                   delete q_;
00108                   if (!(q_ = (PacketQueue*) TclObject::lookup(argv[2])))
00109                           return (TCL_ERROR);
00110                   else {
00111                           pq_ = q_;
00112                           return (TCL_OK);
00113                   }
00114           }
00115                 // attach a file for variable tracing
00116                 if (strcmp(argv[1], "attach") == 0) {
00117                         int mode;
00118                         const char* id = argv[2];
00119                         tchan_ = Tcl_GetChannel(tcl.interp(), (char*)id, &mode);
00120                         if (tchan_ == 0) {
00121                                 tcl.resultf("Vq: trace: can't attach %s for writing", id);
00122                                 return (TCL_ERROR);
00123                         }
00124                         return (TCL_OK);
00125                 }
00126   }
00127   return Queue::command(argc, argv);
00128 }

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void NsObject::debug (  const char *  fmt,
... 
)  [virtual, inherited]
 

Definition at line 102 of file object.cc.

References NsObject::debug_. 

00103 {
00104         if (!debug_)
00105                 return;
00106         va_list ap;
00107         va_start(ap, fmt);
00108         vprintf(fmt, ap);
00109 }

int NsObject::delay_bind_dispatch (  const char *  varName,
const char *  localName,
TclObject *  tracer
)  [virtual, inherited]
 

Reimplemented in BayFullTcpAgent, Agent, MPLSAddressClassifier, LDPAgent, FullTcpAgent, SackFullTcpAgent, RFC793eduTcpAgent, TcpSink, TcpAgent, and VegasTcpAgent.

Definition at line 63 of file object.cc.

References NsObject::debug_.

Referenced by MPLSAddressClassifier::delay_bind_dispatch(), and Agent::delay_bind_dispatch(). 

00064 {
00065         if (delay_bind_bool(varName, localName, "debug_", &debug_, tracer)) 
00066                 return TCL_OK;
00067         return TclObject::delay_bind_dispatch(varName, localName, tracer);
00068 }

void NsObject::delay_bind_init_all (   )  [virtual, inherited]
 

Reimplemented in BayFullTcpAgent, Agent, MPLSAddressClassifier, LDPAgent, FullTcpAgent, SackFullTcpAgent, RFC793eduTcpAgent, TcpSink, TcpAgent, and VegasTcpAgent.

Definition at line 57 of file object.cc.

Referenced by MPLSAddressClassifier::delay_bind_init_all(), and Agent::delay_bind_init_all(). 

00058 {
00059         delay_bind_init_one("debug_");
00060 }

Packet * GK::deque (   )  [protected, virtual]
 

Implements Queue< T >.

Definition at line 163 of file gk.cc.

References hdr_flags::access(), hdr_flags::ce(), Scheduler::clock(), curr_time, PacketQueue::deque(), deque_vq(), hdr_flags::ect(), Scheduler::instance(), PacketQueue::length(), mark_flag, and q_. 

00164 {
00165   /* Check the status of the virtual queue. We do this to update the
00166          mark_flag.  */
00167   curr_time = Scheduler::instance().clock();
00168   deque_vq();
00169 
00170   /* If the Real queue has packets and the mark_flag is set, mark the
00171          outgoing packet. */
00172   if((q_->length() > 0) && (mark_flag == 1)){
00173         Packet *pp = q_->deque();
00174         hdr_flags* hf = hdr_flags::access(pp);
00175         if(hf->ect() == 1)  // ECN capable flow
00176                 hf->ce() = 1; // Mark the TCP Flow;
00177         return pp;
00178   }
00179   else return q_->deque();
00180 }

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void GK::deque_vq (   )  [protected]
 

Definition at line 183 of file gk.cc.

References c_, curr_time, ecnlim_, mark_flag, prev_time, and vq_len.

Referenced by deque(), and enque(). 

00183                  {
00184   if(vq_len > 0.0){ 
00185         vq_len = vq_len - (ecnlim_ * c_ * (curr_time - prev_time));
00186         prev_time = curr_time;
00187         
00188         /* If the VQ hits zero, unset mark_flag */
00189         if(vq_len <= 0.0){
00190           vq_len = 0.0;
00191           mark_flag = 0;
00192         }
00193   }
00194 }

template<class T>
QueueElem<T>* Queue< T >::dequeue (   )  [inline, inherited]
 

Definition at line 378 of file mcache.h.

References Queue< T >::head_, QueueElem< T >::next(), QueueElem< T >::next_, Queue< T >::size_, and Queue< T >::tail_.

Referenced by Queue< T >::detach(), and MediaServer::get_next_segment(). 

00378                                 {
00379                 QueueElem<T> *p = head_;
00380                 if (head_ != 0) 
00381                         head_ = head_->next();
00382                 if (head_ == 0)
00383                         tail_ = 0;
00384                 p->next_ = 0;
00385                 size_--;
00386                 if (size_ == 0) 
00387                         assert((head_ == 0) && (tail_ == 0));
00388                 return p;
00389         }

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template<class T>
virtual void Queue< T >::destroy (   )  [inline, virtual, inherited]
 

Definition at line 358 of file mcache.h.

References QueueElem< T >::data(), Queue< T >::head_, and QueueElem< T >::next(). 

00358                                {
00359                 QueueElem<T> *p = head_, *q;
00360                 while (p != NULL) {
00361                         q = p;
00362                         p = p->next();
00363                         delete q->data();
00364                         delete q;
00365                 }
00366                 head_ = NULL;
00367         }

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template<class T>
void Queue< T >::detach (  QueueElem< T > *  e  )  [inline, inherited]
 

Definition at line 390 of file mcache.h.

References Queue< T >::dequeue(), Queue< T >::head_, QueueElem< T >::next_, Queue< T >::size_, and Queue< T >::tail_.

Referenced by MediaServer::command(). 

00390                                      {
00391                 assert(head_ != 0);
00392                 if (head_ == e) {
00393                         dequeue();
00394                         return;
00395                 }
00396                 QueueElem<T> *p = head_;
00397                 while (p != NULL) {
00398                         if (p->next_ != e)
00399                                 p = p->next_;
00400                         else
00401                                 break;
00402                 }
00403                 assert(p != NULL);
00404                 p->next_ = e->next_;
00405                 if (tail_ == e)
00406                         tail_ = p;
00407                 size_--;
00408                 if (size_ == 0) 
00409                         assert((head_ == 0) && (tail_ == 0));
00410         }

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void Connector::drop (  Packet *  p,
const char *  s
)  [protected, virtual, inherited]
 

Definition at line 114 of file connector.cc.

References Connector::drop_, Packet::free(), and NsObject::recv(). 

00115 {
00116         if (drop_ != 0)
00117                 drop_->recv(p, s);
00118         else
00119                 Packet::free(p);
00120 }

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void Connector::drop (  Packet *  p  )  [virtual, inherited]
 

Definition at line 106 of file connector.cc.

References Connector::drop_, Packet::free(), and NsObject::recv().

Referenced by DSRAgent::acceptRouteReply(), ARPTable::arpresolve(), JoBS::dropFront(), Vq::dropPacketForECN(), DSRAgent::dropSendBuff(), JoBS::dropTail(), dsREDQueue::edrop(), Vq::enque(), SRR::enque(), SimpleIntServ::enque(), SFQ::enque(), rtqueue::enque(), RIOQueue::enque(), REMQueue::enque(), REDQueue::enque(), RedPDQueue::enque(), PIQueue::enque(), Marker::enque(), enque(), dsREDQueue::enque(), DRR::enque(), DropTail::enque(), Demarker::enque(), aodv_rqueue::enque(), toraAgent::forward(), AODV::forward(), LandmarkAgent::ForwardPacket(), DSDV_Agent::forwardPacket(), DSRAgent::getRouteForPacket(), Snoop::handle(), DSRAgent::handleFlowForwarding(), DSRAgent::handleForwarding(), DSDV_Agent::lost_link(), TCPTapAgent::processpkt(), CMUPriQueue::prq_enqueue(), rtqueue::purge(), imepAgent::purgeReXmitQ(), SessionTTLChecker::recv(), TTLChecker::recv(), toraAgent::recv(), FullTcpAgent::recv(), BayFullTcpAgent::recv(), TBF::recv(), SatLL::recv(), LL::recv(), GAFPartner::recv(), FloodAgent::recv(), Filter::recv(), DynamicLink::recv(), DSDV_Agent::recv(), AODV::recv(), AODV::recvError(), PriQueue::recvHighPriority(), AODV::recvReply(), toraAgent::reset(), Queue< T >::reset(), LinkDelay::reset(), AODV::rt_ll_failed(), AODV::rt_purge(), AODV::rt_resolve(), toraAgent::rtRoutePacket(), TCPTapAgent::sendpkt(), TapAgent::sendpkt(), IPTapAgent::sendpkt(), AODV::sendRequest(), SatLL::sendUp(), LL::sendUp(), PriQueue::Terminate(), DSRAgent::Terminate(), CMUPriQueue::Terminate(), ARPTable::Terminate(), and DSRAgent::undeliverablePkt(). 

00107 {
00108         if (drop_ != 0)
00109                 drop_->recv(p);
00110         else
00111                 Packet::free(p);
00112 }

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void GK::enque (  Packet *   )  [protected, virtual]
 

Implements Queue< T >.

Definition at line 130 of file gk.cc.

References Scheduler::clock(), curq_, curr_time, PacketQueue::deque(), deque_vq(), Connector::drop(), drop_front_, ecnlim_, PacketQueue::enque(), Scheduler::instance(), PacketQueue::length(), mark_flag, prev_time, q_, Queue< T >::qlim_, PacketQueue::remove(), and vq_len. 

00131 {
00132   q_->enque(p);
00133          
00134   curr_time = Scheduler::instance().clock();
00135   /*Whenever a packet is enqueued, the actual length of the
00136     virtual queue is determined */
00137  
00138   if(curr_time > prev_time){
00139           deque_vq();
00140   }
00141   /* Add the packet to the VQ */
00142   vq_len = vq_len + 1.0;
00143 
00144   /* If the VQ overflows, set flag so that all packets may be marked
00145          till the VQ hits zero again. */
00146   if(vq_len > (ecnlim_ * qlim_)){
00147           mark_flag = 1; // Indicates that all outgoing packets has to be marked
00148           vq_len = vq_len - 1.0;
00149   }
00150   
00151   if (q_->length() >= qlim_) {
00152                 if (drop_front_) { /* remove from head of queue */
00153                 Packet *pp = q_->deque();
00154                 drop(pp);
00155                 } else {
00156                 q_->remove(p);
00157                 drop(p);
00158                 }
00159   }
00160         curq_ = q_->length(); 
00161 }

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template<class T>
void Queue< T >::enqueue (  QueueElem< T > *  e  )  [inline, inherited]
 

Definition at line 369 of file mcache.h.

References QueueElem< T >::append(), Queue< T >::head_, Queue< T >::size_, and Queue< T >::tail_.

Referenced by MediaServer::command(), and MediaServer::get_next_segment(). 

00369                                       {
00370                 if (tail_ == 0)
00371                         head_ = tail_ = e;
00372                 else {
00373                         tail_->append(e);
00374                         tail_ = e;
00375                 }
00376                 size_++;
00377         }

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template<class T>
QueueElem<T>* Queue< T >::getHead (   )  [inline, inherited]
 

Definition at line 411 of file mcache.h.

References Queue< T >::head_.

Referenced by MediaServer::find_prefinfo(). 

00411 { return head_; }

void NsObject::handle (  Event *   )  [protected, virtual, inherited]
 

Implements Handler.

Reimplemented in LinkDelay, LL, AckRecons, and Snoop.

Definition at line 91 of file object.cc.

References NsObject::recv(). 

00092 {
00093         recv((Packet*)e);
00094 }

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template<class T>
int Queue< T >::is_empty (   )  const [inline, inherited]
 

Definition at line 412 of file mcache.h.

References Queue< T >::size_.

Referenced by MediaServer::command(), and MediaServer::get_next_segment(). 

00412 { return (size_ == 0); }

int NsObject::isdebug (   )  const [inline, inherited]
 

Definition at line 61 of file object.h.

References NsObject::debug_. 

00061 { return debug_; }

template<class T>
int Queue< T >::length (   )  [inline, inherited]
 

Reimplemented in DRR, and SRR.

Definition at line 133 of file queue.h.

References PacketQueue::length(), and Queue< T >::pq_.

Referenced by REMQueue::run_updaterule(), Snoop::snoop_data(), and JoBS::updateStats(). 

00133 { return pq_->length(); }       /* number of pkts currently in

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template<class T>
int Queue< T >::limit (   )  [inline, inherited]
 

Definition at line 132 of file queue.h.

References Queue< T >::qlim_.

Referenced by dsREDQueue::reset(), and Snoop::snoop_data(). 

00132 { return qlim_; }

void NsObject::recv (  Packet *  p,
const char *  s
)  [virtual, inherited]
 

Reimplemented in CMUTrace.

Definition at line 96 of file object.cc.

References Packet::free(). 

00097 {
00098         Packet::free(p);
00099 }

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template<class T>
void Queue< T >::recv (  Packet *  ,
Handler * 
)  [virtual, inherited]
 

Reimplemented from Connector.

Reimplemented in CBQueue, FQ, and PriQueue.

Definition at line 101 of file queue.cc.

References Queue< T >::blocked_, Scheduler::clock(), Queue< T >::deque(), Queue< T >::enque(), Scheduler::instance(), Queue< T >::last_change_, Queue< T >::qh_, NsObject::recv(), Connector::target_, and Queue< T >::utilUpdate().

Referenced by PriQueue::recv(). 

00102 {
00103         double now = Scheduler::instance().clock();
00104         enque(p);
00105         if (!blocked_) {
00106                 /*
00107                  * We're not blocked.  Get a packet and send it on.
00108                  * We perform an extra check because the queue
00109                  * might drop the packet even if it was
00110                  * previously empty!  (e.g., RED can do this.)
00111                  */
00112                 p = deque();
00113                 if (p != 0) {
00114                         utilUpdate(last_change_, now, blocked_);
00115                         last_change_ = now;
00116                         blocked_ = 1;
00117                         target_->recv(p, &qh_);
00118                 }
00119         }
00120 }

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virtual void NsObject::recvOnly (  Packet *   )  [inline, virtual, inherited]
 

Reimplemented in Agent, and Trace.

Definition at line 56 of file object.h.

Referenced by Trace::recvOnly(). 

00056 {};

template<class T>
virtual void Queue< T >::reset (   )  [inline, virtual, inherited]
 

Reimplemented from NsObject.

Reimplemented in dsREDQueue, CBQueue, DropTail, PIQueue, RedPDQueue, REDQueue, REMQueue, and RIOQueue.

Definition at line 349 of file mcache.h.

References Queue< T >::head_, and QueueElem< T >::next(). 

00349                              {
00350                 QueueElem<T> *p = head_, *q;
00351                 while (p != NULL) {
00352                         q = p;
00353                         p = p->next();
00354                         delete q;
00355                 }
00356                 head_ = NULL;
00357         }

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template<class T>
void Queue< T >::reset (   )  [protected, virtual, inherited]
 

Reimplemented from NsObject.

Reimplemented in dsREDQueue, CBQueue, DropTail, PIQueue, RedPDQueue, REDQueue, REMQueue, and RIOQueue.

Definition at line 174 of file queue.cc.

References Queue< T >::deque(), Connector::drop(), Queue< T >::total_time_, and Queue< T >::true_ave_.

Referenced by REDQueue::reset(), PIQueue::reset(), dsREDQueue::reset(), and DropTail::reset(). 

00175 {
00176         Packet* p;
00177         total_time_ = 0.0;
00178         true_ave_ = 0.0;
00179         while ((p = deque()) != 0)
00180                 drop(p);
00181 }

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template<class T>
void Queue< T >::resume (   )  [inherited]
 

Definition at line 154 of file queue.cc.

References Queue< T >::blocked_, Scheduler::clock(), Queue< T >::deque(), Scheduler::instance(), Queue< T >::last_change_, Queue< T >::qh_, NsObject::recv(), Connector::target_, Queue< T >::unblock_on_resume_, and Queue< T >::utilUpdate().

Referenced by WRR_CBQueue::deque(), CBQueue::deque(), and QueueHandler::handle(). 

00155 {
00156         double now = Scheduler::instance().clock();
00157         Packet* p = deque();
00158         if (p != 0) {
00159                 target_->recv(p, &qh_);
00160         } else {
00161                 if (unblock_on_resume_) {
00162                         utilUpdate(last_change_, now, blocked_);
00163                         last_change_ = now;
00164                         blocked_ = 0;
00165                 }
00166                 else {
00167                         utilUpdate(last_change_, now, blocked_);
00168                         last_change_ = now;
00169                         blocked_ = 1;
00170                 }
00171         }
00172 }

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void Connector::send (  Packet *  p,
Handler *  h
)  [inline, protected, inherited]
 

Reimplemented in Agent, and LinkDelay.

Definition at line 54 of file connector.h.

References NsObject::recv(), and Connector::target_.

Referenced by SessionTTLChecker::recv(), TTLChecker::recv(), DequeTrace::recv(), Trace::recv(), TraceIpMac::recv(), TraceIp::recv(), SatDequeTrace::recv(), SALink::recv(), SnoopQueueEDrop::recv(), SnoopQueueTagger::recv(), SnoopQueueDrop::recv(), SnoopQueueOut::recv(), SnoopQueueIn::recv(), PktCounter::recv(), NetworkInterface::recv(), MeasureMod::recv(), Filter::recv(), Connector::recv(), CMUTrace::recv(), CBQClass::recv(), and AddSR::recv(). 

00054 { target_->recv(p, h); }

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template<class T>
int Queue< T >::size (   )  const [inline, inherited]
 

Definition at line 413 of file mcache.h.

References Queue< T >::size_.

Referenced by JoBS::arvAccounting(), JoBS::assignRateDropsADC(), dsREDQueue::deque(), JoBS::dropFront(), JoBS::dropTail(), RedPDQueue::enque(), JoBS::enque(), MediaServer::get_next_segment(), JoBS::pickDroppedRLC(), and FQ::recv(). 

00413 { return size_; }

NsObject* Connector::target (   )  [inline, inherited]
 

Definition at line 48 of file connector.h.

References Connector::target_.

Referenced by JoBS::assignRateDropsADC(), FQ::deque(), QSAgent::recv(), and MIPMHAgent::reg(). 

00048 { return target_; }

void GK::trace (  TracedVar *   )  [protected]
 

Definition at line 203 of file gk.cc.

References Scheduler::clock(), Scheduler::instance(), and tchan_. 

00204 {
00205         char wrk[500], *p;
00206 
00207         if ((p = strstr(v->name(), "curq")) == NULL) {
00208                 fprintf(stderr, "Vq:unknown trace var %s\n", v->name());
00209                 return;
00210         }
00211 
00212         if (tchan_) {
00213                 int n;
00214                 double t = Scheduler::instance().clock();
00215                 // XXX: be compatible with nsv1 RED trace entries
00216                 if (*p == 'c') {
00217                         sprintf(wrk, "Q %g %d", t, int(*((TracedInt*) v)));
00218                 } else {
00219                         sprintf(wrk, "%c %g %g", *p, t, double(*((TracedDouble*) v)));
00220                 }
00221                 n = strlen(wrk);
00222                 wrk[n] = '\n'; 
00223                 wrk[n+1] = 0;
00224                 (void)Tcl_Write(tchan_, wrk, n+1);
00225         }
00226         return; 
00227 }

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template<class T>
void Queue< T >::unblock (   )  [inline, inherited]
 

Definition at line 130 of file queue.h.

References Queue< T >::blocked_. 

00130 { blocked_ = 0; }

template<class T>
void Queue< T >::updateStats (  int  queuesize  )  [virtual, inherited]
 

Definition at line 141 of file queue.cc.

References Scheduler::clock(), Scheduler::instance(), Queue< T >::total_time_, and Queue< T >::true_ave_.

Referenced by REDQueue::deque(), DropTail::deque(), REDQueue::enque(), and DropTail::enque(). 

00142 {
00143         double now = Scheduler::instance().clock();
00144         double newtime = now - total_time_;
00145         if (newtime > 0.0) {
00146                 double oldave = true_ave_;
00147                 double oldtime = total_time_;
00148                 double newtime = now - total_time_;
00149                 true_ave_ = (oldtime * oldave + newtime * queuesize) /now;
00150                 total_time_ = now;
00151         }
00152 }

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template<class T>
double Queue< T >::utilization (  void   )  [virtual, inherited]
 

Definition at line 130 of file queue.cc.

References Queue< T >::blocked_, Scheduler::clock(), Scheduler::instance(), Queue< T >::last_change_, Queue< T >::old_util_, and Queue< T >::utilUpdate().

Referenced by QSAgent::recv(). 

00131 {
00132         double now = Scheduler::instance().clock();
00133         
00134         utilUpdate(last_change_, now, blocked_);
00135         last_change_ = now;
00136 
00137         return old_util_;
00138                         
00139 }

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template<class T>
void Queue< T >::utilUpdate (  double  int_begin,
double  int_end,
int  link_state
)  [protected, inherited]
 

Definition at line 122 of file queue.cc.

References Queue< T >::old_util_, and Queue< T >::util_weight_.

Referenced by Queue< T >::recv(), Queue< T >::resume(), and Queue< T >::utilization(). 

00122                                                                        {
00123 double decay;
00124 
00125         decay = exp(-util_weight_ * (int_end - int_begin));
00126         old_util_ = link_state + (old_util_ - link_state) * decay;
00127 
00128 }

Member Data Documentation

template<class T>
int Queue< T >::blocked_ [protected, inherited]
 

Definition at line 143 of file queue.h.

Referenced by Queue< T >::block(), Queue< T >::blocked(), Queue< T >::Queue(), Queue< T >::recv(), FQ::recv(), CBQueue::recv(), PriQueue::recvHighPriority(), Queue< T >::resume(), CBQueue::sched(), Queue< T >::unblock(), and Queue< T >::utilization().

double GK::c_ [protected]
 

Definition at line 58 of file gk.h.

Referenced by command(), and deque_vq().

TracedInt GK::curq_ [protected]
 

Definition at line 63 of file gk.h.

Referenced by enque(), and GK().

double GK::curr_time [protected]
 

Definition at line 61 of file gk.h.

Referenced by deque(), deque_vq(), and enque().

int NsObject::debug_ [protected, inherited]
 

Reimplemented in FECModel, FloodAgent, and LandmarkAgent.

Definition at line 66 of file object.h.

Referenced by REDQueue::command(), RedPDQueue::command(), PushbackQueue::command(), NsObject::debug(), NsObject::delay_bind_dispatch(), RedPDQueue::enque(), PushbackQueue::enque(), NsObject::isdebug(), NsObject::NsObject(), TfrcAgent::recv(), PushbackQueue::reportDrop(), and REDQueue::reset().

NsObject* Connector::drop_ [protected, inherited]
 

Definition at line 57 of file connector.h.

Referenced by Connector::command(), Connector::drop(), and ErrorModel::recv().

int GK::drop_front_ [protected]
 

Definition at line 55 of file gk.h.

Referenced by enque(), and GK().

double GK::ecnlim_ [protected]
 

Definition at line 56 of file gk.h.

Referenced by deque_vq(), enque(), and GK().

NsObject* GK::EDTrace [protected]
 

Definition at line 68 of file gk.h.

template<class T>
QueueElem<T>* Queue< T >::head_ [protected, inherited]
 

Definition at line 416 of file mcache.h.

Referenced by Queue< T >::dequeue(), Queue< T >::destroy(), Queue< T >::detach(), Queue< T >::enqueue(), Queue< T >::getHead(), Queue< T >::Queue(), Queue< T >::reset(), and Queue< T >::~Queue().

template<class T>
double Queue< T >::last_change_ [protected, inherited]
 

Definition at line 154 of file queue.h.

Referenced by Queue< T >::recv(), Queue< T >::resume(), and Queue< T >::utilization().

LinkDelay* GK::link_ [protected]
 

Definition at line 53 of file gk.h.

Referenced by command().

int GK::mark_flag [protected]
 

Definition at line 59 of file gk.h.

Referenced by deque(), deque_vq(), enque(), and GK().

int GK::mean_pktsize_ [protected]
 

Definition at line 62 of file gk.h.

Referenced by command(), and GK().

template<class T>
double Queue< T >::old_util_ [protected, inherited]
 

Definition at line 155 of file queue.h.

Referenced by Queue< T >::utilization(), and Queue< T >::utilUpdate().

template<class T>
PacketQueue* Queue< T >::pq_ [protected, inherited]
 

Definition at line 146 of file queue.h.

Referenced by Queue< T >::byteLength(), Vq::command(), REMQueue::command(), REDQueue::command(), PIQueue::command(), command(), DropTail::command(), DropTail::DropTail(), GK(), Queue< T >::length(), SemanticRIOQueue::pickPacketForECN(), SemanticREDQueue::pickPacketForECN(), SemanticRIOQueue::pickPacketToDrop(), SemanticREDQueue::pickPacketToDrop(), PIQueue::PIQueue(), REDQueue::REDQueue(), REMQueue::REMQueue(), and Vq::Vq().

double GK::prev_time [protected]
 

Definition at line 60 of file gk.h.

Referenced by deque_vq(), enque(), and GK().

PacketQueue* GK::q_ [protected]
 

Definition at line 54 of file gk.h.

Referenced by command(), deque(), enque(), and GK().

template<class T>
QueueHandler Queue< T >::qh_ [protected, inherited]
 

Definition at line 145 of file queue.h.

Referenced by Queue< T >::recv(), FQ::recv(), PriQueue::recvHighPriority(), Queue< T >::resume(), and CBQueue::sched().

template<class T>
int Queue< T >::qlim_ [protected, inherited]
 

Definition at line 142 of file queue.h.

Referenced by Vq::checkPacketForECN(), Vq::enque(), SRR::enque(), RIOQueue::enque(), REMQueue::enque(), REDQueue::enque(), PIQueue::enque(), Marker::enque(), JoBS::enque(), enque(), DropTail::enque(), Demarker::enque(), Queue< T >::limit(), RIOQueue::print_edp(), REDQueue::print_edp(), Queue< T >::Queue(), and PriQueue::recvHighPriority().

template<class T>
int Queue< T >::size_ [protected, inherited]
 

Definition at line 417 of file mcache.h.

Referenced by Queue< T >::dequeue(), Queue< T >::detach(), Queue< T >::enqueue(), Queue< T >::is_empty(), Queue< T >::Queue(), and Queue< T >::size().

template<class T>
QueueElem<T> * Queue< T >::tail_ [protected, inherited]
 

Definition at line 416 of file mcache.h.

Referenced by Queue< T >::dequeue(), Queue< T >::detach(), Queue< T >::enqueue(), and Queue< T >::Queue().

NsObject* Connector::target_ [protected, inherited]
 

Definition at line 56 of file connector.h.

Referenced by SRAgent::command(), SA_Agent::command(), IvsReceiver::command(), MultiFieldFilter::command(), Filter::command(), Connector::command(), DiffusionAgent::DiffusionAgent(), DSRAgent::DSRAgent(), PromotionTimer::expire(), FloodingAgent::FloodingAgent(), toraAgent::forward(), AODV::forward(), LandmarkAgent::ForwardPacket(), DSDV_Agent::forwardPacket(), SensorQueryAgent::generate_query(), DSDVTriggerHandler::handle(), AckRecons::handle(), DSRAgent::handlePacketReceipt(), DSDV_Agent::helper_callback(), AODV::initialized(), DSDV_Agent::lost_link(), OmniMcastAgent::OmniMcastAgent(), LandmarkAgent::periodic_callback(), LandmarkAgent::ProcessHierUpdate(), TCPTapAgent::processpkt(), IPTapAgent::processpkt(), CMUPriQueue::prq_enqueue(), CMUPriQueue::prq_resume(), DequeTrace::recv(), Trace::recv(), TraceIpMac::recv(), TraceIp::recv(), TBF::recv(), SRMAgent::recv(), SSMSRMAgent::recv(), SatDequeTrace::recv(), SAack_Agent::recv(), Queue< T >::recv(), PingResponder::recv(), MIPEncapsulator::recv(), LmsAgent::recv(), HackLossyLink::recv(), GAFPartner::recv(), FQ::recv(), FloodAgent::recv(), ErrorModel::recv(), DynamicLink::recv(), DumbAgent::recv(), DSRAgent::recv(), DelayModel::recv(), LinkDelay::recv(), CtrMcastDecap::recv(), CtrMcastEncap::recv(), CMUTrace::recv(), PriQueue::recvHighPriority(), Trace::recvOnly(), TapAgent::recvpkt(), Queue< T >::resume(), LinkDelay::send(), Connector::send(), Agent::send(), MIPBSAgent::send_ads(), SRMAgent::send_ctrl(), SSMSRMAgent::send_ctrl(), MFTPSndAgent::send_data(), LmsSender::send_dmcast(), LmsReceiver::send_dmcast(), LmsAgent::send_downstream(), SSMSRMAgent::send_glb_sess(), LmsSender::send_lms_pkt(), SSMSRMAgent::send_loc_sess(), MFTPRcvAgent::send_nak(), LmsReceiver::send_nak(), LmsReceiver::send_refresh(), SSMSRMAgent::send_rep_sess(), SRMAgent::send_sess(), MIPMHAgent::send_sols(), LmsSender::send_spm(), MFTPSndAgent::send_status_request(), LmsAgent::send_upstream(), LandmarkAgent::SendChangedTagListUpdate(), AODV::sendError(), AODV::sendHello(), UdpAgent::sendmsg(), SRMAgent::sendmsg(), SA_Agent::sendmsg(), RTPAgent::sendmsg(), LmsSender::sendmsg(), DSDV_Agent::sendOutBCastPkt(), SA_Agent::sendpkt(), rtProtoDV::sendpkt(), RTPAgent::sendpkt(), RTCPAgent::sendpkt(), IvsSource::sendpkt(), AODV::sendReply(), AODV::sendRequest(), LmsSender::solicit_naks(), Connector::target(), TBF::timeout(), and toraAgent::tora_output().

Tcl_Channel GK::tchan_ [protected]
 

Definition at line 71 of file gk.h.

Referenced by command(), and trace().

template<class T>
double Queue< T >::total_time_ [protected, inherited]
 

Definition at line 150 of file queue.h.

Referenced by REDQueue::print_summarystats(), DropTail::print_summarystats(), Queue< T >::reset(), and Queue< T >::updateStats().

char GK::traceType[20] [protected]
 

Definition at line 69 of file gk.h.

template<class T>
double Queue< T >::true_ave_ [protected, inherited]
 

Definition at line 149 of file queue.h.

Referenced by REDQueue::print_summarystats(), DropTail::print_summarystats(), Queue< T >::reset(), and Queue< T >::updateStats().

template<class T>
int Queue< T >::unblock_on_resume_ [protected, inherited]
 

Definition at line 144 of file queue.h.

Referenced by Queue< T >::Queue(), and Queue< T >::resume().

template<class T>
double Queue< T >::util_weight_ [protected, inherited]
 

Definition at line 156 of file queue.h.

Referenced by Queue< T >::Queue(), and Queue< T >::utilUpdate().

double GK::vq_len [protected]
 

Definition at line 57 of file gk.h.

Referenced by deque_vq(), enque(), and GK().

The documentation for this class was generated from the following files:
Generated on Tue Apr 20 12:49:41 2004 for NS2.26SourcesOriginal by doxygen 1.3.3