com.cosylab.epics.caj.cas

Class CASServerMonitor

java.lang.Object

gov.aps.jca.cas.ServerMonitor

com.cosylab.epics.caj.cas.CASServerMonitor

All Implemented Interfaces:

ProcessVariableEventCallback, Runnable

public class CASServerMonitor
extends ServerMonitor
implements ProcessVariableEventCallback, Runnable

CAS monitor implementation.

Version:

$id$

Author:

Matej Sekoranja

Field Summary

Fields

Modifier and Type	Field and Description
protected int	dataCount
protected short	dataType
protected boolean	destoryed Flag indicating destroy status.
protected EventAddResponse	handler
protected short	mask Monitor mask.
protected static int	MAX_QUEUE_SIZE Max queue size.
protected DBR	pendingEvent Pending event.
protected LinkedList	queue Ordered dispatch queue.
protected boolean	submitPending Flag indicating pending submit.
protected CASTransport	transport

Fields inherited from class gov.aps.jca.cas.ServerMonitor

channel, ioid

Constructor Summary

Constructors

Constructor and Description
CASServerMonitor(ServerChannel channel, int ioid, short mask, EventAddResponse handler, CASTransport transport, short dataType, int dataCount)

Method Summary

Modifier and Type	Method and Description
void	canceled() Notify about asynchronous operation cancellation.
void	destroy() Destroy monitor.
void	postEvent(int select, DBR event) Notify about process variable event.
void	run() NOT TO BE CHANGED.
protected void	submit() Sumbit to be processed.

Methods inherited from class gov.aps.jca.cas.ServerMonitor

getChannel, getIOID, printInfo, printInfo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mask

protected short mask

Monitor mask.

handler

protected EventAddResponse handler

transport

protected CASTransport transport

dataType

protected short dataType

dataCount

protected int dataCount

queue

protected LinkedList queue

Ordered dispatch queue.

pendingEvent

protected DBR pendingEvent

Pending event. NOTE: synchronized on queue's monitor.

submitPending

protected boolean submitPending

Flag indicating pending submit. NOTE: synchronized on queue's monitor.

destoryed

protected boolean destoryed

Flag indicating destroy status. NOTE: synchronized on queue's monitor.

MAX_QUEUE_SIZE

protected static final int MAX_QUEUE_SIZE

Max queue size. If limit is reached then older events are replaced with the newer.

See Also:

Constant Field Values

Constructor Detail

CASServerMonitor

public CASServerMonitor(ServerChannel channel,
                        int ioid,
                        short mask,
                        EventAddResponse handler,
                        CASTransport transport,
                        short dataType,
                        int dataCount)

Parameters:

channel - ServerChannel

ioid - event Id

mask - monitor mask

handler - EventAddResponse

transport - CASTransport

dataType - data type

dataCount - data count

Method Detail

destroy

public void destroy()

Description copied from class: ServerMonitor

Destroy monitor. This method MUST BE called if this it is overriden.

Overrides:

destroy in class ServerMonitor

See Also:

ServerMonitor.destroy()

canceled

public void canceled()

Notify about asynchronous operation cancellation.

See Also:

CompletionCallback.canceled()

run

public final void run()

NOT TO BE CHANGED. Processing is done one by one - to achieve better fairness.

Specified by:

run in interface Runnable

submit

protected void submit()

Sumbit to be processed.

postEvent

public void postEvent(int select,
                      DBR event)

Description copied from interface: ProcessVariableEventCallback

Notify about process variable event.

Specified by:

postEvent in interface ProcessVariableEventCallback

Parameters:

select - Monitor.[mask] event type.

event - event of type DBR_TIME_ where type is of ProcessVariable.getType().

See Also:

ProcessVariableEventCallback.postEvent(int, gov.aps.jca.dbr.DBR)