This template class maps the PAbstractList to a specific object type, and adds functionality that allows the list to be used as a first in first out queue. More...

#include <lists.h>

Inheritance diagram for PQueue< T >:

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Collaboration diagram for PQueue< T >:

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Public Member Functions
Construction
	PQueue ()
	Create a new, empty, queue. More...

Overrides from class PObject
virtual PObject *	Clone () const
	Make a complete duplicate of the list. More...

New functions for class
virtual void	Enqueue (T *obj)
	Add a new object to the queue. More...

virtual T *	Dequeue ()
	Remove an object that was added to the queue. More...

Public Member Functions inherited from PAbstractList
virtual Comparison	Compare (const PObject &obj) const
	Get the relative rank of the two lists. More...

PINLINE	PAbstractList ()
	Create a new, empty, list. More...

virtual PBoolean	SetSize (PINDEX newSize)
	This function is meaningless for lists. More...

virtual PINDEX	Append (PObject *obj)
	Append a new object to the collection. More...

virtual void	Prepend (PObject *obj)
	Append a new object to the collection. More...

virtual PINDEX	Insert (const PObject &before, PObject *obj)
	Insert a new object immediately before the specified object. More...

virtual P_DEPRECATED PINDEX	InsertAt (PINDEX index, PObject *obj)
	Insert a new object at the specified ordinal index. More...

virtual PBoolean	Remove (const PObject *obj)
	Remove the object from the collection. More...

virtual PObject *	RemoveHead ()
	Remove the head object from the list. More...

virtual PObject *	RemoveTail ()
	Remove the tail object from the list. More...

virtual P_DEPRECATED PObject *	RemoveAt (PINDEX index)
	Remove the object at the specified ordinal index from the collection. More...

virtual P_DEPRECATED PBoolean	SetAt (PINDEX index, PObject *val)
	Set the object at the specified ordinal position to the new value. More...

virtual P_DEPRECATED PBoolean	ReplaceAt (PINDEX index, PObject *val)
	Set the object at the specified ordinal position to the new value. More...

virtual P_DEPRECATED PObject *	GetAt (PINDEX index) const
	Get the object at the specified ordinal position. More...

virtual PINDEX	GetObjectsIndex (const PObject *obj) const
	Search the collection for the specific instance of the object. More...

virtual PINDEX	GetValuesIndex (const PObject &obj) const
	Search the collection for the specified value of the object. More...

Public Member Functions inherited from PCollection
	PCollection (PINDEX initialSize=0)
	Create a new collection. More...

virtual void	PrintOn (ostream &strm) const
	Print the collection on the stream. More...

__inline void	remove (const PObject *obj)

virtual void	RemoveAll ()
	Remove all of the elements in the collection. More...

__inline void	clear ()

PINLINE void	AllowDeleteObjects (PBoolean yes=true)
	Allow or disallow the deletion of the objects contained in the collection. More...

void	DisallowDeleteObjects ()
	Disallow the deletion of the objects contained in the collection. More...

Public Member Functions inherited from PContainer
	PContainer (PINDEX initialSize=0)
	Create a new unique container. More...

	PContainer (const PContainer &cont)
	Create a new refernce to container. More...

PContainer &	operator= (const PContainer &cont)
	Assign one container reference to another. More...

virtual	~PContainer ()
	Destroy the container class. More...

virtual PINDEX	GetSize () const
	Get the current size of the container. More...

__inline size_t	size () const

PBoolean	SetMinSize (PINDEX minSize)
	Set the minimum size of container. More...

virtual PBoolean	IsEmpty () const
	Determine if the container is empty. More...

__inline bool	empty () const

PBoolean	IsUnique () const
	Determine if container is unique reference. More...

virtual PBoolean	MakeUnique ()
	Make this instance to be the one and only reference to the container contents. More...

Public Member Functions inherited from PObject
unsigned	GetTraceContextIdentifier () const
	Get PTRACE context identifier. More...

void	SetTraceContextIdentifier (unsigned id)

void	GetTraceContextIdentifier (PObject &obj)

void	GetTraceContextIdentifier (PObject *obj)

void	SetTraceContextIdentifier (const PObject &obj)

void	SetTraceContextIdentifier (const PObject *obj)

virtual	~PObject ()

template<class CLS >
CLS *	CloneAs () const
	As for Clone() but converts to specified type. More...

virtual PINDEX	HashFunction () const
	This function yields a hash value required by the `PDictionary` class. More...

virtual const char *	GetClass (unsigned ancestor=0) const
	Get the current dynamic type of the object instance. More...

PBoolean	IsClass (const char *cls) const

virtual PBoolean	InternalIsDescendant (const char *clsName) const
	Determine if the dynamic type of the current instance is a descendent of the specified class. More...

__inline const PObject *	PTraceObjectInstance () const

virtual Comparison	CompareObjectMemoryDirect (const PObject &obj) const
	Determine the byte wise comparison of two objects. More...

bool	operator== (const PObject &obj) const
	Compare the two objects. More...

bool	operator!= (const PObject &obj) const
	Compare the two objects. More...

bool	operator< (const PObject &obj) const
	Compare the two objects. More...

bool	operator> (const PObject &obj) const
	Compare the two objects. More...

bool	operator<= (const PObject &obj) const
	Compare the two objects. More...

bool	operator>= (const PObject &obj) const
	Compare the two objects. More...

virtual void	ReadFrom (istream &strm)
	Input the contents of the object from the stream. More...

Protected Member Functions
	PQueue (int dummy, const PQueue *c)

Protected Member Functions inherited from PAbstractList
PINLINE PObject &	GetReferenceAt (PINDEX index) const

PListElement *	FindElement (PINDEX index) const

PListElement *	FindElement (const PObject &obj, PINDEX *index) const

void	InsertElement (PListElement element, PObject obj)

PObject *	RemoveElement (PListElement *element)

Protected Member Functions inherited from PCollection
PINLINE	PCollection (int dummy, const PCollection *coll)
	Constructor used in support of the Clone() function. More...

Protected Member Functions inherited from PContainer
	PContainer (int dummy, const PContainer *cont)
	Constructor used in support of the Clone() function. More...

	PContainer (PContainerReference &reference)
	Construct using static PContainerReference. More...

virtual void	DestroyContents ()=0
	Destroy the container contents. More...

virtual void	AssignContents (const PContainer &c)
	Copy the container contents. More...

void	CopyContents (const PContainer &c)
	Copy the container contents. More...

void	CloneContents (const PContainer *src)
	Create a duplicate of the container contents. More...

void	Destruct ()
	Internal function called from container destructors. More...

virtual void	DestroyReference ()
	Destroy the PContainerReference instance. More...

Protected Member Functions inherited from PObject
	PObject ()
	Constructor for PObject, made protected so cannot ever create one on its own. More...

Additional Inherited Members
Public Types inherited from PObject
enum	Comparison { LessThan = -1, EqualTo = 0, GreaterThan = 1 }
	Result of the comparison operation performed by the `Compare()` function. More...

Static Public Member Functions inherited from PObject
static const char *	Class ()
	Get the name of the class as a C string. More...

static __inline const PObject *	PTraceObjectInstance (const char *)

static __inline const PObject *	PTraceObjectInstance (const PObject *obj)

static Comparison	InternalCompareObjectMemoryDirect (const PObject obj1, const PObject obj2, PINDEX size)
	Internal function caled from CompareObjectMemoryDirect() More...

Protected Types inherited from PAbstractList
typedef PListElement	Element

Protected Attributes inherited from PAbstractList
PListInfo *	info

Friends inherited from PObject

Detailed Description

template<class T>
class PQueue< T >

This template class maps the PAbstractList to a specific object type, and adds functionality that allows the list to be used as a first in first out queue.

The functions in this class primarily do all the appropriate casting of types.

By default, objects placed into the set will T be deleted when removed or when all references to the set are destroyed. This is different from the default on most collection classes.

Note that if templates are not used the PDECLARE_QUEUE macro will simulate the template instantiation.

Constructor & Destructor Documentation

template<class T>

PQueue< T >::PQueue ( )

inline

Create a new, empty, queue.

Note that by default, objects placed into the queue will not be deleted when removed or when all references to the queue are destroyed. This is different from the default on most collection classes.

Referenced by PQueue< PXMLElement >::Clone().

template<class T>

PQueue< T >::PQueue	(	int	dummy,
		const PQueue< T > *	c
	)

inlineprotected

Member Function Documentation

template<class T>

virtual PObject* PQueue< T >::Clone ( ) const

inlinevirtual

Make a complete duplicate of the list.

Note that all objects in the array are also cloned, so this will make a complete copy of the list.

Reimplemented from PObject.

template<class T>

virtual T* PQueue< T >::Dequeue ( )

inlinevirtual

Remove an object that was added to the queue.

Returns: first object added to the queue or NULL if queue empty.

template<class T>

virtual void PQueue< T >::Enqueue ( T * obj )

inlinevirtual

Add a new object to the queue.

This places a new link at the "tail" of the list, which is the "in" side of the queue.

Parameters

obj	Object to add to the queue.

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

lists.h

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

template<class T> class PQueue< T >

Constructor & Destructor Documentation

Member Function Documentation

template<class T>
class PQueue< T >