/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2007 University of Washington
* All rights reserved.
*
* 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
*/
#include "ns3/log.h"
#include "ns3/composite-trace-resolver.h"
#include "ns3/default-value.h"
#include "ns3/type-id-default-value.h"
#include "queue.h"
NS_LOG_COMPONENT_DEFINE ("Queue");
namespace ns3 {
static TypeIdDefaultValue g_interfaceIdDefaultValue ("Queue", "Packet Queue",
Queue::GetTypeId (), "DropTailQueue");
NS_OBJECT_ENSURE_REGISTERED (Queue);
std::string
QueueTraceType::GetTypeName (void) const
{
NS_LOG_FUNCTION;
return "ns3::QueueTraceType";
}
uint16_t
QueueTraceType::GetUid (void)
{
NS_LOG_FUNCTION;
static uint16_t uid = AllocateUid<QueueTraceType> ("QueueTraceType");
return uid;
}
QueueTraceType::QueueTraceType ()
: m_type (QueueTraceType::ENQUEUE)
{
NS_LOG_FUNCTION;
}
QueueTraceType::QueueTraceType (enum Type type)
: m_type (type)
{
NS_LOG_FUNCTION;
}
bool
QueueTraceType::IsEnqueue (void) const
{
NS_LOG_FUNCTION;
return m_type == ENQUEUE;
}
bool
QueueTraceType::IsDequeue (void) const
{
NS_LOG_FUNCTION;
return m_type == DEQUEUE;
}
bool
QueueTraceType::IsDrop (void) const
{
NS_LOG_FUNCTION;
return m_type == DROP;
}
void
QueueTraceType::Print (std::ostream &os) const
{
os << "queue-";
switch (m_type) {
case QueueTraceType::ENQUEUE:
os << "enqueue";
break;
case QueueTraceType::DEQUEUE:
os << "dequeue";
break;
case QueueTraceType::DROP:
os << "drop";
break;
}
}
TypeId
Queue::GetTypeId (void)
{
static TypeId tid = TypeId ("Queue")
.SetParent<Object> ();
return tid;
}
Queue::Queue() :
m_nBytes(0),
m_nTotalReceivedBytes(0),
m_nPackets(0),
m_nTotalReceivedPackets(0),
m_nTotalDroppedBytes(0),
m_nTotalDroppedPackets(0)
{
NS_LOG_FUNCTION;
}
Queue::~Queue()
{
NS_LOG_FUNCTION;
}
Ptr<TraceResolver>
Queue::GetTraceResolver (void) const
{
NS_LOG_FUNCTION;
Ptr<CompositeTraceResolver> resolver = Create<CompositeTraceResolver> ();
resolver->AddSource ("enqueue",
TraceDoc ("store packet in queue",
"Ptr<const Packet>", "packet queued"),
m_traceEnqueue, QueueTraceType (QueueTraceType::ENQUEUE));
resolver->AddSource ("dequeue",
TraceDoc ("remove packet from queue",
"Ptr<const Packet>", "packet dequeued"),
m_traceDequeue, QueueTraceType (QueueTraceType::DEQUEUE));
resolver->AddSource ("drop",
TraceDoc ("drop packet from queue",
"Ptr<const Packet>", "packet dropped"),
m_traceDrop, QueueTraceType (QueueTraceType::DROP));
resolver->SetParentResolver (Object::GetTraceResolver ());
return resolver;
}
bool
Queue::Enqueue (Ptr<Packet> p)
{
NS_LOG_FUNCTION;
NS_LOG_PARAMS (this << p);
NS_LOG_LOGIC ("m_traceEnqueue (p)");
m_traceEnqueue (p);
bool retval = DoEnqueue (p);
if (retval)
{
m_nBytes += p->GetSize ();
m_nPackets++;
}
return retval;
}
Ptr<Packet>
Queue::Dequeue (void)
{
NS_LOG_FUNCTION;
NS_LOG_PARAMS (this);
Ptr<Packet> packet = DoDequeue ();
if (packet != 0)
{
m_nBytes -= packet->GetSize ();
m_nPackets--;
NS_ASSERT (m_nBytes >= 0);
NS_ASSERT (m_nPackets >= 0);
NS_LOG_LOGIC("m_traceDequeue (packet)");
m_traceDequeue (packet);
}
return packet;
}
void
Queue::DequeueAll (void)
{
NS_LOG_FUNCTION;
NS_ASSERT_MSG (0, "Don't know what to do with dequeued packets!");
}
Ptr<Packet>
Queue::Peek (void) const
{
NS_LOG_FUNCTION;
NS_LOG_PARAMS (this);
return DoPeek ();
}
uint32_t
Queue::GetNPackets (void) const
{
NS_LOG_FUNCTION;
NS_LOG_LOGIC ("returns " << m_nPackets);
return m_nPackets;
}
uint32_t
Queue::GetNBytes (void) const
{
NS_LOG_FUNCTION;
NS_LOG_LOGIC (" returns " << m_nBytes);
return m_nBytes;
}
bool
Queue::IsEmpty (void) const
{
NS_LOG_FUNCTION;
NS_LOG_LOGIC ("returns " << (m_nPackets == 0));
return m_nPackets == 0;
}
uint32_t
Queue::GetTotalReceivedBytes (void) const
{
NS_LOG_FUNCTION;
NS_LOG_LOGIC("returns " << m_nTotalReceivedBytes);
return m_nTotalReceivedBytes;
}
uint32_t
Queue::GetTotalReceivedPackets (void) const
{
NS_LOG_FUNCTION;
NS_LOG_LOGIC ("returns " << m_nTotalReceivedPackets);
return m_nTotalReceivedPackets;
}
uint32_t
Queue:: GetTotalDroppedBytes (void) const
{
NS_LOG_FUNCTION;
NS_LOG_LOGIC ("returns " << m_nTotalDroppedBytes);
return m_nTotalDroppedBytes;
}
uint32_t
Queue::GetTotalDroppedPackets (void) const
{
NS_LOG_FUNCTION;
NS_LOG_LOGIC("returns " << m_nTotalDroppedPackets);
return m_nTotalDroppedPackets;
}
void
Queue::ResetStatistics (void)
{
NS_LOG_FUNCTION;
m_nTotalReceivedBytes = 0;
m_nTotalReceivedPackets = 0;
m_nTotalDroppedBytes = 0;
m_nTotalDroppedPackets = 0;
}
void
Queue::Drop (Ptr<Packet> p)
{
NS_LOG_FUNCTION;
NS_LOG_PARAMS (this << p);
m_nTotalDroppedPackets++;
m_nTotalDroppedBytes += p->GetSize ();
NS_LOG_LOGIC ("m_traceDrop (p)");
m_traceDrop (p);
}
Ptr<Queue>
Queue::CreateDefault (void)
{
NS_LOG_FUNCTION;
TypeId interfaceId = g_interfaceIdDefaultValue.GetValue ();
Ptr<Queue> queue = interfaceId.CreateObject ()->GetObject<Queue> ();
return queue;
}
}; // namespace ns3