ca.eandb.jdcp.console

Class WorkerState

java.lang.Object

ca.eandb.jdcp.console.WorkerState

public final class WorkerState
extends Object

Provides commands for managing a worker process.

Author:

Brad Kimmel

Constructor Summary

Constructors

Constructor and Description
WorkerState()

Method Summary

Modifier and Type	Method and Description
void	setcpus(int numberOfCpus) Sets the maximum number of concurrent workers.
void	start(int numberOfCpus, String host, String username, String password, boolean internal, String courtesyCommand, File courtesyWorkingDirectory, long courtesyPollingInterval) Starts the worker process.
void	stat(int index) Prints the status of the worker threads.
void	stop() Stops the worker process.

Methods inherited from class java.lang.Object

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

Constructor Detail

WorkerState

public WorkerState()

Method Detail

start

public void start(int numberOfCpus,
                  String host,
                  String username,
                  String password,
                  boolean internal,
                  String courtesyCommand,
                  File courtesyWorkingDirectory,
                  long courtesyPollingInterval)

Starts the worker process.

Parameters:

numberOfCpus - The number of worker threads to spawn.

host - The name of the host to connect to.

username - The user name to log in with.

password - The password to log in with.

internal - If set, class definitions downloaded from the server will be cached in memory only. Otherwise, class definitions will be persisted to a database.

courtesyCommand - an optional shell command to be invoked periodically to query whether to continue processing worker tasks. If the shell script returns a non-zero exit code, worker tasks will be suspended. Worker tasks will resume when the shell script returns an exit code of zero.

courtesyWorkingDirectory - the working directory in which to run the courtesyCommand shell script

courtesyPollingInterval - the number of seconds between invocations of the courtesyCommand shell script

setcpus

public void setcpus(int numberOfCpus)

Sets the maximum number of concurrent workers.

Parameters:

numberOfCpus - The number of CPUs to use (zero to use all available CPUs on the machine).

stop

public void stop()

Stops the worker process.

stat

public void stat(int index)

Prints the status of the worker threads.

Parameters:

index - The 1-based index of the worker thread to print the status of, or zero to print the status of all worker threads.