org.mmtk.vm.gcspy

Class ServerSpace

java.lang.Object

org.mmtk.vm.gcspy.ServerSpace

Direct Known Subclasses:

ServerSpace

public abstract class ServerSpace
extends Object

Abstract class for the GCspy Space abstraction.

Implementing classes will largely forward calls to the gcspy C library.

Field Summary

Fields

Modifier and Type	Field and Description
protected static boolean	DEBUG
protected static String	DEFAULT_UNUSED_STRING The "unused" string
protected Address	driver a pointer to the C driver, gcspy_gc_drivert *driver
protected int	spaceId the space's ID

Constructor Summary

Constructors

Constructor and Description
ServerSpace()

Method Summary

Modifier and Type	Method and Description
abstract Address	addStream(int id) Add a stream to the native driver
void	endCommunication() End the transmission (for this event)
(package private) Address	getDriverAddress() Get a pointer to the native driver
abstract void	resize(int size) Tell the C driver to resize
abstract void	sendControls(AbstractDriver space, int tileNum) Send all the control info for the space
abstract void	setTilename(int i, Address start, Address end) Tell the native driver the tile name.
abstract void	setTilename(int i, Address format, long value) Tell the native driver the tile name.
abstract void	setTilename(int i, String format, long value) Tell the native driver the tile names.
abstract void	spaceInfo(Address info) Send info for this space
abstract void	startCommunication() Start a transmission
abstract void	stream(int id, int len) Start transmitting a stream.
abstract void	streamByteValue(byte value) Send a byte
abstract void	streamEnd() End of this stream
abstract void	streamIntValue(int value) Send an int
abstract void	streamShortValue(short value) Send a short
abstract void	summary(int id, int len) Start to send a summary
abstract void	summaryEnd() End the summary
abstract void	summaryValue(int val) Send a summary value

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_UNUSED_STRING

protected static final String DEFAULT_UNUSED_STRING

The "unused" string

See Also:

Constant Field Values

spaceId

protected int spaceId

the space's ID

driver

protected Address driver

a pointer to the C driver, gcspy_gc_drivert *driver

DEBUG

protected static final boolean DEBUG

See Also:

Constant Field Values

Constructor Detail

ServerSpace

public ServerSpace()

Method Detail

getDriverAddress

Address getDriverAddress()

Get a pointer to the native driver

Returns:

The address of the C driver, gcspy_gc_drivert *, used in all calls to the C library.

setTilename

public abstract void setTilename(int i,
                                 Address start,
                                 Address end)

Tell the native driver the tile name.

Parameters:

i - the number of the tile

start - the starting address of the tile

end - the end address

setTilename

public abstract void setTilename(int i,
                                 Address format,
                                 long value)

Tell the native driver the tile name.

Parameters:

i - the number of the tile

format - the name of the tile, a format string

value - The value for the format string

setTilename

public abstract void setTilename(int i,
                                 String format,
                                 long value)

Tell the native driver the tile names.

Parameters:

i - the number of the tile

format - The name, including format tags

value - The value for the format string

resize

public abstract void resize(int size)

Tell the C driver to resize

Parameters:

size - the new driver size

startCommunication

public abstract void startCommunication()

Start a transmission

addStream

public abstract Address addStream(int id)

Add a stream to the native driver

Parameters:

id - the stream's ID

Returns:

the address of the C gcspy_gc_stream_t

stream

public abstract void stream(int id,
                            int len)

Start transmitting a stream.

Parameters:

id - The stream's ID

len - The number of items in the stream

streamByteValue

public abstract void streamByteValue(byte value)

Send a byte

Parameters:

value - The byte

streamShortValue

public abstract void streamShortValue(short value)

Send a short

Parameters:

value - The short

streamIntValue

public abstract void streamIntValue(int value)

Send an int

Parameters:

value - The int

streamEnd

public abstract void streamEnd()

End of this stream

summary

public abstract void summary(int id,
                             int len)

Start to send a summary

Parameters:

id - The stream's ID

len - The number of items to be sent

summaryValue

public abstract void summaryValue(int val)

Send a summary value

Parameters:

val - The value

summaryEnd

public abstract void summaryEnd()

End the summary

sendControls

public abstract void sendControls(AbstractDriver space,
                                  int tileNum)

Send all the control info for the space

Parameters:

space - The GCspy driver for this space

tileNum - The number of tiles

spaceInfo

public abstract void spaceInfo(Address info)

Send info for this space

Parameters:

info - A pointer to the information (held as C string)

endCommunication

public void endCommunication()

End the transmission (for this event)