MessageQueue Class Reference

A message queue. More...

#include <yatengine.h>

Inheritance diagram for MessageQueue:

Public Member Functions
	MessageQueue (const char *hookName, int numWorkers=0)
	~MessageQueue ()
virtual bool	enqueue (Message *msg)
bool	dequeue ()
void	addFilter (const char *name, const char *value)
void	removeFilter (const String &name)
virtual void	clear ()
void	removeThread (Thread *thread)
unsigned int	count () const
const NamedList &	getFilters () const
virtual bool	matchesFilter (const Message &msg)
Public Member Functions inherited from RefObject
	RefObject ()
virtual	~RefObject ()
virtual void *	getObject (const String &name) const
virtual bool	alive () const
bool	ref ()
bool	deref ()
int	refcount () const
virtual void	destruct ()
Public Member Functions inherited from GenObject
	GenObject ()
virtual	~GenObject ()
virtual const String &	toString () const
NamedCounter *	getObjCounter () const
NamedCounter *	setObjCounter (NamedCounter *counter)
Public Member Functions inherited from Mutex
	Mutex (bool recursive=false, const char *name=0)
	Mutex (const Mutex &original)
	~Mutex ()
Mutex &	operator= (const Mutex &original)
virtual bool	lock (long maxwait=-1)
virtual bool	unlock ()
virtual bool	locked () const
const char *	owner () const
bool	recursive () const
Public Member Functions inherited from Lockable
virtual	~Lockable ()
virtual bool	check (long maxwait=-1)
virtual bool	unlockAll ()

Protected Member Functions
virtual void	received (Message &msg)
Protected Member Functions inherited from RefObject
virtual void	zeroRefs ()
bool	resurrect ()
virtual void	destroyed ()

Friends
class	Engine

Additional Inherited Members
Static Public Member Functions inherited from RefObject
static bool	alive (const RefObject *obj)
static bool	efficientIncDec ()
Static Public Member Functions inherited from GenObject
static void *	getObject (const String &name, const GenObject *obj)
static bool	getObjCounting ()
static void	setObjCounting (bool enable)
static NamedCounter *	getObjCounter (const String &name, bool create=true)
static ObjList &	getObjCounters ()
Static Public Member Functions inherited from Mutex
static int	count ()
static int	locks ()
static bool	efficientTimedLock ()
Static Public Member Functions inherited from Lockable
static void	wait (unsigned long maxwait)
static unsigned long	wait ()
static void	startUsingNow ()
static void	enableSafety (bool safe=true)
static bool	safety ()

Detailed Description

A message queue.

MessageQueue class allows to create a private queue for a message who matches the specified filters.

Constructor & Destructor Documentation

MessageQueue	(	const char *	hookName,
		int	numWorkers = 0
	)

Creates a new message queue.

Parameters

hookName	Name of the message served by this queue
numWorkers	The number of workers who serve this queue

~MessageQueue

(

)

Destroys the message queue

Member Function Documentation

void addFilter	(	const char *	name,
		const char *	value
	)

Add a new filter to this queue

Parameters

name	The filter name
value	The filter value

virtual void clear ( )

virtual

Clear private data

Implements MessageHook.

unsigned int count ( ) const

inline

Helper method to obtain the number of unprocessed messages in the queue

Returns

The number of queued messages.

bool dequeue

(

)

Process a message from the waiting queue

Returns

False if the message queue is empty

virtual bool enqueue ( Message *  msg )

virtual

Append a message in the queue

Parameters

msg	The message to enqueue, will be destroyed after the processing is done

Returns

True if successfully queued, false otherwise

Implements MessageHook.

const NamedList& getFilters ( ) const

inline

Obtain the filter list for this queue

Returns

The filter list

virtual bool matchesFilter ( const Message &  msg )

virtual

Check if the given message can be inserted in this queue

Parameters

msg	The message to check

Returns

True if the message can be inserted in this queue

Implements MessageHook.

virtual void received ( Message &  msg )

protectedvirtual

Callback method for message processing Default calls Engine::dispatch

Parameters

msg	The message to process

void removeFilter

(

const String &

name

)

Remove a filter form this queue

Parameters

name	The filter name

void removeThread

(

Thread *

thread

)

Remove a thread from workers list

Parameters

thread

The thread to remove

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

• yatengine.h