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.

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

ServerSpace

public ServerSpace()

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)