sun.jvmstat.perfdata.monitor.protocol.rmi

Class PerfDataBuffer

java.lang.Object

sun.jvmstat.perfdata.monitor.AbstractPerfDataBuffer

sun.jvmstat.perfdata.monitor.protocol.rmi.PerfDataBuffer

public class PerfDataBuffer
extends AbstractPerfDataBuffer

The concrete PerfDataBuffer implementation for the rmi: protocol for the HotSpot PerfData monitoring implementation.

This class is responsible for acquiring the instrumentation buffer data for a remote target HotSpot Java Virtual Machine.

Since:

1.5

Author:

Brian Doherty

Field Summary

Fields inherited from class sun.jvmstat.perfdata.monitor.AbstractPerfDataBuffer

impl

Constructor Summary

Constructors

Constructor and Description
PerfDataBuffer(RemoteVm rvm, int lvmid) Create a PerfDataBuffer instance for accessing the specified instrumentation buffer.

Method Summary

Modifier and Type	Method and Description
void	sample(ByteBuffer buffer) Get a copy of the remote instrumentation buffer.

Methods inherited from class sun.jvmstat.perfdata.monitor.AbstractPerfDataBuffer

createPerfDataBuffer, findByName, findByPattern, getByteBuffer, getBytes, getCapacity, getLocalVmId, getMonitorStatus

Methods inherited from class java.lang.Object

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

Constructor Detail

PerfDataBuffer

public PerfDataBuffer(RemoteVm rvm,
                      int lvmid)
               throws MonitorException

Create a PerfDataBuffer instance for accessing the specified instrumentation buffer.

Parameters:

rvm - the proxy to the remote MonitredVm object

lvmid - the local Java Virtual Machine Identifier of the remote target.

Throws:

MonitorException

Method Detail

sample

public void sample(ByteBuffer buffer)
            throws RemoteException

Get a copy of the remote instrumentation buffer.

The data in the remote instrumentation buffer is copied into the local byte buffer.

Parameters:

buffer - the buffer to receive the copy of the remote instrumentation buffer.

Throws:

RemoteException - Thrown on any communications errors with the remote system.