Package org.yamcs.tctm.ccsds

Class MasterChannelFrameMultiplexer

java.lang.Object

org.yamcs.tctm.ccsds.MasterChannelFrameMultiplexer

public class MasterChannelFrameMultiplexer
extends Object

Multiplexes TC frames from Virtual Channels based on priority schemes.

Three priorities schemes are implemented, inspired from CCSDS 912.3-B-3

• FIFO - the frame with the earliest timestamp is selected.
• absolute priority - the frames are selected from the virtual channel with highest priority.
• polling vector - the virtual channels are checked in accordance with the entries in the polling vector.

Constructor Summary

Constructors

Constructor	Description
MasterChannelFrameMultiplexer(String yamcsInstance, String linkName, YConfiguration config)

Method Summary

Modifier and Type	Method	Description
TcTransferFrame	getFrame()	Get the next frame blocking until one is available or until quit() is called.
Collection<VcUplinkHandler>	getVcHandlers()
void	quit()	Stop producing frames and unblock the getFrame() operation

Methods inherited from class java.lang.Object

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

Constructor Detail

MasterChannelFrameMultiplexer

public MasterChannelFrameMultiplexer(String yamcsInstance,
                                     String linkName,
                                     YConfiguration config)

Method Detail

getFrame

public TcTransferFrame getFrame()

Get the next frame blocking until one is available or until quit() is called.

Returns:

next frame or null if the multiplexer has been closed

quit

public void quit()

Stop producing frames and unblock the getFrame() operation

getVcHandlers

public Collection<VcUplinkHandler> getVcHandlers()