ec.eval
Class MasterProblemServer

java.lang.Object
  ec.eval.MasterProblemServer

All Implemented Interfaces:

java.io.Serializable, java.lang.Runnable

public class MasterProblemServer
extends java.lang.Object
implements java.lang.Runnable, java.io.Serializable

MasterProblemServer.java

The server awaits for incoming slaves to connect. Upon one such connection is established, the server creates and starts a worker thread to manage all the incoming communication from this slave.

Parameters

eval.master.port int	(the port where the slaves will connect)
eval.compression boolean	(whether the communication with the slaves should be compressed or not)
eval.masterproblem.max-jobs-per-slave int	(the maximum load (number of jobs) per slave at any point in time)

See Also:

Serialized Form

Field Summary

static java.lang.String	P_EVALCOMPRESSION
static java.lang.String	P_EVALMASTERPORT
static java.lang.String	P_MAXIMUMNUMBEROFCONCURRENTJOBSPERSLAVE
java.net.ServerSocket	servSock The socket where slaves connect.
SlaveMonitor	slaveMonitor
EvolutionState	state
boolean	useCompression Indicates whether compression is used over the socket IO streams.

Constructor Summary

MasterProblemServer(boolean showDebugInfo)

Method Summary

void	run() The run method waits for incoming slaves, and launches new worker threads (one per incoming slave) to handle the communication with the slave.
void	setupServerFromDatabase(EvolutionState state) After the MasterProblemServer is created, it needs to be told to initialize itself from information in the parameter database.
void	shutdown() Indicates that the background thread is to shut down and closes the server socket.
java.lang.Thread	spawnThread() Creates and starts a background thread for this server.

Methods inherited from class java.lang.Object

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

Field Detail

P_EVALMASTERPORT

public static final java.lang.String P_EVALMASTERPORT

See Also:

Constant Field Values

P_EVALCOMPRESSION

public static final java.lang.String P_EVALCOMPRESSION

See Also:

Constant Field Values

P_MAXIMUMNUMBEROFCONCURRENTJOBSPERSLAVE

public static final java.lang.String P_MAXIMUMNUMBEROFCONCURRENTJOBSPERSLAVE

See Also:

Constant Field Values

slaveMonitor

public SlaveMonitor slaveMonitor

servSock

public java.net.ServerSocket servSock

The socket where slaves connect.

useCompression

public boolean useCompression

Indicates whether compression is used over the socket IO streams.

state

public EvolutionState state

Constructor Detail

MasterProblemServer

public MasterProblemServer(boolean showDebugInfo)

Method Detail

setupServerFromDatabase

public void setupServerFromDatabase(EvolutionState state)

After the MasterProblemServer is created, it needs to be told to initialize itself from information in the parameter database. It distinguishes between starting fresh and restoring from a checkpoint by the state of the randomStates and slaves arrays.

Parameters:

state - the evolution state

shutdown

public void shutdown()

Indicates that the background thread is to shut down and closes the server socket. (should probably be synchronized).

run

public void run()

The run method waits for incoming slaves, and launches new worker threads (one per incoming slave) to handle the communication with the slave.

Specified by:

run in interface java.lang.Runnable

spawnThread

public java.lang.Thread spawnThread()

Creates and starts a background thread for this server.

Returns:

the background thread