A FIFO packet queue that drops tail-end packets on overflow. More...

#include "drop-tail-queue.h"

Inheritance diagram for ns3::DropTailQueue< Item >:

Collaboration diagram for ns3::DropTailQueue< Item >:

Public Member Functions
	DropTailQueue ()
	DropTailQueue Constructor.

	~DropTailQueue () override

Ptr< Item >	Dequeue () override
	Remove an item from the Queue (each subclass defines the position), counting it and tracing it as dequeued.

bool	Enqueue (Ptr< Item > item) override
	Place an item into the Queue (each subclass defines the position)

Ptr< const Item >	Peek () const override
	Get a copy of an item in the queue (each subclass defines the position) without removing it.

Ptr< Item >	Remove () override
	Remove an item from the Queue (each subclass defines the position), counting it and tracing it as both dequeued and dropped.

Public Member Functions inherited from ns3::Queue< Item >
	Queue ()

	~Queue () override

void	Flush ()
	Flush the queue by calling Remove() on each item enqueued.

Public Member Functions inherited from ns3::QueueBase
	QueueBase ()

	~QueueBase () override

QueueSize	GetCurrentSize () const

QueueSize	GetMaxSize () const

uint32_t	GetNBytes () const

uint32_t	GetNPackets () const

uint32_t	GetTotalDroppedBytes () const

uint32_t	GetTotalDroppedBytesAfterDequeue () const

uint32_t	GetTotalDroppedBytesBeforeEnqueue () const

uint32_t	GetTotalDroppedPackets () const

uint32_t	GetTotalDroppedPacketsAfterDequeue () const

uint32_t	GetTotalDroppedPacketsBeforeEnqueue () const

uint32_t	GetTotalReceivedBytes () const

uint32_t	GetTotalReceivedPackets () const

bool	IsEmpty () const

void	ResetStatistics ()
	Resets the counts for dropped packets, dropped bytes, received packets, and received bytes.

void	SetMaxSize (QueueSize size)
	Set the maximum size of this queue.

bool	WouldOverflow (uint32_t nPackets, uint32_t nBytes) const
	Check if the queue would overflow with additional bytes or packets Note: the check is performed according to the queue's operating mode (bytes or packets).

Public Member Functions inherited from ns3::Object
	Object ()
	Constructor.

	~Object () override
	Destructor.

void	AggregateObject (Ptr< Object > other)
	Aggregate two Objects together.

void	Dispose ()
	Dispose of this Object.

AggregateIterator	GetAggregateIterator () const
	Get an iterator to the Objects aggregated to this one.

TypeId	GetInstanceTypeId () const override
	Get the most derived TypeId for this Object.

template<typename T >
Ptr< T >	GetObject () const
	Get a pointer to the requested aggregated Object.

template<>
Ptr< Object >	GetObject () const
	Specialization of () for objects of type ns3::Object.

template<typename T >
Ptr< T >	GetObject (TypeId tid) const
	Get a pointer to the requested aggregated Object by TypeId.

template<>
Ptr< Object >	GetObject (TypeId tid) const
	Specialization of (TypeId tid) for objects of type ns3::Object.

void	Initialize ()
	Invoke DoInitialize on all Objects aggregated to this one.

bool	IsInitialized () const
	Check if the object has been initialized.

void	UnidirectionalAggregateObject (Ptr< Object > other)
	Aggregate an Object to another Object.

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Default constructor.

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor.

uint32_t	GetReferenceCount () const
	Get the reference count of the object.

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment operator.

void	Ref () const
	Increment the reference count.

void	Unref () const
	Decrement the reference count.

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor.

void	GetAttribute (std::string name, AttributeValue &value, bool permissive=false) const
	Get the value of an attribute, raising fatal errors if unsuccessful.

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising errors.

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful.

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors.

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context.

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context.

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context.

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context.

Static Public Member Functions
static TypeId	GetTypeId ()
	Get the type ID.

Static Public Member Functions inherited from ns3::Queue< Item >
static TypeId	GetTypeId ()
	Get the type ID.

Static Public Member Functions inherited from ns3::QueueBase
static void	AppendItemTypeIfNotPresent (std::string &typeId, const std::string &itemType)
	Append the item type to the provided type ID if the latter does not end with '>'.

static TypeId	GetTypeId ()
	Get the type ID.

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId ()
	Register this type.

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId ()
	Get the type ID.

Private Attributes
	NS_LOG_TEMPLATE_DECLARE
	redefinition of the log component

Additional Inherited Members
Public Types inherited from ns3::Queue< Item >
typedef Item	ItemType
	Define ItemType as the type of the stored elements.

Protected Types inherited from ns3::Queue< Item >
typedef Container::const_iterator	ConstIterator
	Const iterator.

typedef Container::iterator	Iterator
	Iterator.

Protected Member Functions inherited from ns3::Queue< Item >
Ptr< Item >	DoDequeue (ConstIterator pos)
	Pull the item to dequeue from the queue.

void	DoDispose () override
	Destructor implementation.

bool	DoEnqueue (ConstIterator pos, Ptr< Item > item)
	Push an item in the queue.

bool	DoEnqueue (ConstIterator pos, Ptr< Item > item, Iterator &ret)
	Push an item in the queue.

Ptr< const Item >	DoPeek (ConstIterator pos) const
	Peek the front item in the queue.

Ptr< Item >	DoRemove (ConstIterator pos)
	Pull the item to drop from the queue.

void	DropAfterDequeue (Ptr< Item > item)
	Drop a packet after dequeue.

void	DropBeforeEnqueue (Ptr< Item > item)
	Drop a packet before enqueue.

const Container &	GetContainer () const
	Get a const reference to the container of queue items.

Protected Member Functions inherited from ns3::Object
	Object (const Object &o)
	Copy an Object.

virtual void	DoInitialize ()
	Initialize() implementation.

virtual void	NotifyNewAggregate ()
	Notify all Objects aggregated to this one of a new Object being aggregated.

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes.

virtual void	NotifyConstructionCompleted ()
	Notifier called once the ObjectBase is fully constructed.

Protected Attributes inherited from ns3::QueueBase
QueueSize	m_maxSize
	max queue size

TracedValue< uint32_t >	m_nBytes
	Number of bytes in the queue.

TracedValue< uint32_t >	m_nPackets
	Number of packets in the queue.

uint32_t	m_nTotalDroppedBytes
	Total dropped bytes.

uint32_t	m_nTotalDroppedBytesAfterDequeue
	Total dropped bytes after dequeue.

uint32_t	m_nTotalDroppedBytesBeforeEnqueue
	Total dropped bytes before enqueue.

uint32_t	m_nTotalDroppedPackets
	Total dropped packets.

uint32_t	m_nTotalDroppedPacketsAfterDequeue
	Total dropped packets after dequeue.

uint32_t	m_nTotalDroppedPacketsBeforeEnqueue
	Total dropped packets before enqueue.

uint32_t	m_nTotalReceivedBytes
	Total received bytes.

uint32_t	m_nTotalReceivedPackets
	Total received packets.

Related Symbols inherited from ns3::ObjectBase
static TypeId	GetObjectIid ()
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly.

Detailed Description

template<typename Item>
class ns3::DropTailQueue< Item >

A FIFO packet queue that drops tail-end packets on overflow.

Definition at line 21 of file drop-tail-queue.h.

Constructor & Destructor Documentation

◆ DropTailQueue()

template<typename Item >

ns3::DropTailQueue< Item >::DropTailQueue ( )

DropTailQueue Constructor.

Creates a droptail queue with a maximum size of 100 packets by default

Definition at line 75 of file drop-tail-queue.h.

References NS_LOG_FUNCTION.

◆ ~DropTailQueue()

template<typename Item >

ns3::DropTailQueue< Item >::~DropTailQueue ( )

override

Definition at line 83 of file drop-tail-queue.h.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ Dequeue()

template<typename Item >

Ptr< Item > ns3::DropTailQueue< Item >::Dequeue ( )

overridevirtual

Remove an item from the Queue (each subclass defines the position), counting it and tracing it as dequeued.

Returns: 0 if the operation was not successful; the item otherwise.

Implements ns3::Queue< Item >.

Definition at line 99 of file drop-tail-queue.h.

References NS_LOG_FUNCTION, and NS_LOG_LOGIC.

◆ Enqueue()

template<typename Item >

bool ns3::DropTailQueue< Item >::Enqueue ( Ptr< Item > item )

overridevirtual

Place an item into the Queue (each subclass defines the position)

Parameters

item	item to enqueue

Returns: True if the operation was successful; false otherwise

Implements ns3::Queue< Item >.

Definition at line 90 of file drop-tail-queue.h.

References NS_LOG_FUNCTION.

◆ GetTypeId()

template<typename Item >

TypeId ns3::DropTailQueue< Item >::GetTypeId ( )

static

Get the type ID.

Implementation of the templates declared above.

Returns: the object TypeId

Definition at line 59 of file drop-tail-queue.h.

References ns3::QueueBase::GetMaxSize(), ns3::GetTemplateClassName(), ns3::MakeQueueSizeAccessor(), ns3::MakeQueueSizeChecker(), ns3::QueueBase::SetMaxSize(), and ns3::TypeId::SetParent().

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◆ Peek()

template<typename Item >

Ptr< const Item > ns3::DropTailQueue< Item >::Peek ( ) const

overridevirtual

Get a copy of an item in the queue (each subclass defines the position) without removing it.

Returns: 0 if the operation was not successful; the item otherwise.

Implements ns3::Queue< Item >.

Definition at line 125 of file drop-tail-queue.h.

References NS_LOG_FUNCTION.

◆ Remove()

template<typename Item >

Ptr< Item > ns3::DropTailQueue< Item >::Remove ( )

overridevirtual

Remove an item from the Queue (each subclass defines the position), counting it and tracing it as both dequeued and dropped.

Returns: 0 if the operation was not successful; the item otherwise.

Implements ns3::Queue< Item >.

Definition at line 112 of file drop-tail-queue.h.

References NS_LOG_FUNCTION, and NS_LOG_LOGIC.

Member Data Documentation

◆ NS_LOG_TEMPLATE_DECLARE

template<typename Item >

ns3::DropTailQueue< Item >::NS_LOG_TEMPLATE_DECLARE

private

redefinition of the log component

Definition at line 50 of file drop-tail-queue.h.

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

src/network/utils/drop-tail-queue.h

Public Member Functions

Static Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ DropTailQueue()

◆ ~DropTailQueue()

Member Function Documentation

◆ Dequeue()

◆ Enqueue()

◆ GetTypeId()

◆ Peek()

◆ Remove()

Member Data Documentation

◆ NS_LOG_TEMPLATE_DECLARE