org.jlab.coda.emu.support.messaging

Class MvalReportingHandler

java.lang.Object

org.jlab.coda.emu.support.messaging.GenericCallback

org.jlab.coda.emu.support.messaging.MvalReportingHandler

All Implemented Interfaces:

org.jlab.coda.cMsg.cMsgCallbackInterface

class MvalReportingHandler
extends GenericCallback
implements org.jlab.coda.cMsg.cMsgCallbackInterface

This class receives messages from the ET input channels containing the number of evio events in each ET event (or M). This callback selects the lowest and highest M values from all reporting channels in order to send that number to the ROCs on the other end of the input channels. It also sends the highest safe value of M for ROCs which currently is set at 2 x lowM. This feedback msg to ROCs is only sent if the highest safe value changes. A reset can be received for low, high and safe high values (used at prestart).

Note that M values are reported at a max rate of 1/2 Hz. This callback is only active if this emu is a DC or PEB.

Author:

timmer (Jul 14, 2014)

Constructor Summary

Constructors

Constructor and Description
MvalReportingHandler(CMSGPortal cmsgPortal) Constructor.

Method Summary

Modifier and Type	Method and Description
void	callback(org.jlab.coda.cMsg.cMsgMessage msg, java.lang.Object o) This method is a callback for subscriptions of subject = this emu's name.

Methods inherited from class org.jlab.coda.emu.support.messaging.GenericCallback

getMaximumQueueSize, getMaximumThreads, getMessagesPerThread, getSkipSize, maySkipMessages, mustSerializeMessages

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jlab.coda.cMsg.cMsgCallbackInterface

getMaximumQueueSize, getMaximumThreads, getMessagesPerThread, getSkipSize, maySkipMessages, mustSerializeMessages

Constructor Detail

MvalReportingHandler

MvalReportingHandler(CMSGPortal cmsgPortal)

Constructor.

Parameters:

cmsgPortal - of type CMSGPortal

Method Detail

callback

public void callback(org.jlab.coda.cMsg.cMsgMessage msg,
                     java.lang.Object o)

This method is a callback for subscriptions of subject = this emu's name. This callback can get 2 types of messages, containing:

1. For DC/PEB: M value from ET input channel,or

2. For DC/PEB: command to reset M value

Specified by:

callback in interface org.jlab.coda.cMsg.cMsgCallbackInterface

Parameters:

msg - cMsgMessage being received

o - object given in subscription and passed in here (null in this case)