sun.jvmstat.perfdata.monitor
Class PerfByteArrayMonitor

java.lang.Object
  sun.jvmstat.monitor.AbstractMonitor
      sun.jvmstat.perfdata.monitor.PerfByteArrayMonitor

All Implemented Interfaces:

ByteArrayMonitor, Monitor

Direct Known Subclasses:

PerfStringMonitor

public class PerfByteArrayMonitor
extends AbstractMonitor
implements ByteArrayMonitor

Class for monitoring a PerfData Byte Array instrumentation object. This class is provided to support the PerfStringMonitor classes. Instrumentation objects of this direct type currently cannot be created or monitored.

Since:

1.5

See Also:

sun.jvmstat.instrument.ByteArrayInstrument

Field Summary

Fields inherited from class sun.jvmstat.monitor.AbstractMonitor

name, supported, units, variability, vectorLength

Constructor Summary

PerfByteArrayMonitor(String name, sun.management.counter.Units u, sun.management.counter.Variability v, boolean supported, ByteBuffer bb, int vectorLength)
Constructor to create a ByteArrayMonitor for the byte array instrument represented by the data in the given buffer.

Method Summary

byte[]	byteArrayValue() Get a copy of the elements of the byte array instrument.
byte	byteAt(int index) Get the current value of an element of the byte array instrument.
int	getMaximumLength() Get the maximum length of the byte array for this byte array instrument.
Object	getValue() Return an Object that encapsulates this instrumentation object's current data value.

Methods inherited from class sun.jvmstat.monitor.AbstractMonitor

getBaseName, getName, getUnits, getVariability, getVectorLength, isSupported, isVector

Methods inherited from class java.lang.Object

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

Methods inherited from interface sun.jvmstat.monitor.Monitor

getBaseName, getName, getUnits, getVariability, getVectorLength, isSupported, isVector

Constructor Detail

PerfByteArrayMonitor

public PerfByteArrayMonitor(String name,
                            sun.management.counter.Units u,
                            sun.management.counter.Variability v,
                            boolean supported,
                            ByteBuffer bb,
                            int vectorLength)

Constructor to create a ByteArrayMonitor for the byte array instrument represented by the data in the given buffer.

Parameters:

name - the name of the instrumentation object

u - the units of measure attribute

v - the variability attribute

supported - support level indicator

bb - the buffer containing the byte array instrument data

vectorLength - the length of the vector.

Method Detail

getValue

public Object getValue()

Return an Object that encapsulates this instrumentation object's current data value. The object returned contains a byte[] with a copy of the current elements of the ByteArrayInstrument.

Specified by:

getValue in interface Monitor

Specified by:

getValue in class AbstractMonitor

Returns:

Object - a copy of the current value of the elements of the byte array instrument. The return type is guaranteed to be of type byte[].

byteArrayValue

public byte[] byteArrayValue()

Get a copy of the elements of the byte array instrument.

Specified by:

byteArrayValue in interface ByteArrayMonitor

Returns:

byte[] - a copy of the current value of the elements of the byte array instrument.

byteAt

public byte byteAt(int index)

Get the current value of an element of the byte array instrument.

Specified by:

byteAt in interface ByteArrayMonitor

Returns:

byte - a copy of the current value of the element at index index of the byte array instrument.

getMaximumLength

public int getMaximumLength()

Get the maximum length of the byte array for this byte array instrument.

Returns:

int - the maximum length of the byte array.