org.jikesrvm.mm.mmtk.gcspy

Class ServerInterpreter

java.lang.Object

org.mmtk.vm.gcspy.ServerInterpreter

org.jikesrvm.mm.mmtk.gcspy.ServerInterpreter

public class ServerInterpreter
extends ServerInterpreter

Generic GCspy Server Interpreter.

This class implements the GCspy server. The server runs as a separate pthread and communicates with GCspy clients. It handles commands from the client and passes data to it. Mostly it forwards calls to the C gcspy library.

Field Summary

Fields inherited from class org.mmtk.vm.gcspy.ServerInterpreter

DEBUG, initialised, MAX_LEN, MAX_SPACES, server, spaces

Constructor Summary

Constructors

Constructor and Description
ServerInterpreter()

Method Summary

Modifier and Type	Method and Description
void	addEvent(int num, String name) Add an event to the ServerInterpreter.
int	computeHeaderSize() Discover the smallest header size for objects.
void	init(String name, int port, boolean verbose) Create a new ServerInterpreter singleton.
boolean	isConnected(int event) Are we connected to a GCspy client?
void	serverSafepoint(int event) Indicate that we are at a server safe point (e.g. the end of a GC).
void	setGeneralInfo(String info) Set the general info for the ServerInterpreter.
void	startCompensationTimer() Start compensation timer so that time spent gathering data is not confused with the time spent in the application and the VM.
void	startServer(boolean wait) Start the server, running its main loop in a pthread.
void	stopCompensationTimer() Stop compensation timer so that time spent gathering data is not confused with the time spent in the application and the VM.r

Methods inherited from class org.mmtk.vm.gcspy.ServerInterpreter

addSpace, getServerAddress

Methods inherited from class java.lang.Object

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

Constructor Detail

ServerInterpreter

public ServerInterpreter()

Method Detail

init

public void init(String name,
                 int port,
                 boolean verbose)

Description copied from class: ServerInterpreter

Create a new ServerInterpreter singleton.

Specified by:

init in class ServerInterpreter

Parameters:

name - The name of the server

port - The number of the port on which to communicate

verbose - Whether the server is to run verbosely

addEvent

public void addEvent(int num,
                     String name)

Description copied from class: ServerInterpreter

Add an event to the ServerInterpreter.

Specified by:

addEvent in class ServerInterpreter

Parameters:

num - the event number

name - the event name

setGeneralInfo

public void setGeneralInfo(String info)

Description copied from class: ServerInterpreter

Set the general info for the ServerInterpreter.

Specified by:

setGeneralInfo in class ServerInterpreter

Parameters:

info - the information

startServer

public void startServer(boolean wait)

Description copied from class: ServerInterpreter

Start the server, running its main loop in a pthread.

Specified by:

startServer in class ServerInterpreter

Parameters:

wait - Whether to wait for the client to connect

isConnected

public boolean isConnected(int event)

Description copied from class: ServerInterpreter

Are we connected to a GCspy client?

Specified by:

isConnected in class ServerInterpreter

Parameters:

event - The current event

Returns:

true if we are connected

startCompensationTimer

public void startCompensationTimer()

Description copied from class: ServerInterpreter

Start compensation timer so that time spent gathering data is not confused with the time spent in the application and the VM.

Specified by:

startCompensationTimer in class ServerInterpreter

stopCompensationTimer

public void stopCompensationTimer()

Description copied from class: ServerInterpreter

Stop compensation timer so that time spent gathering data is not confused with the time spent in the application and the VM.r

Specified by:

stopCompensationTimer in class ServerInterpreter

serverSafepoint

public void serverSafepoint(int event)

Description copied from class: ServerInterpreter

Indicate that we are at a server safe point (e.g. the end of a GC). This is a point at which the server can pause, play one, etc.

Specified by:

serverSafepoint in class ServerInterpreter

Parameters:

event - The current event

computeHeaderSize

public int computeHeaderSize()

Description copied from class: ServerInterpreter

Discover the smallest header size for objects.

Specified by:

computeHeaderSize in class ServerInterpreter

Returns:

the size in bytes