/**
* Get a copy of the remote instrumentation buffer.
*
* <p>The data in the remote instrumentation buffer is copied into the local byte buffer.
*
* @param buffer the buffer to receive the copy of the remote instrumentation buffer.
* @throws RemoteException Thrown on any communications errors with the remote system.
*/
public void sample(ByteBuffer buffer) throws RemoteException {
assert buffer != null;
assert rvm != null;
synchronized (buffer) {
buffer.clear();
buffer.put(rvm.getBytes());
}
}
/**
* Create a PerfDataBuffer instance for accessing the specified instrumentation buffer.
*
* @param rvm the proxy to the remote MonitredVm object
* @param lvmid the local Java Virtual Machine Identifier of the remote target.
* @throws MonitorException
*/
public PerfDataBuffer(RemoteVm rvm, int lvmid) throws MonitorException {
this.rvm = rvm;
try {
ByteBuffer buffer = ByteBuffer.allocate(rvm.getCapacity());
sample(buffer);
createPerfDataBuffer(buffer, lvmid);
} catch (RemoteException e) {
throw new MonitorException("Could not read data for remote JVM " + lvmid, e);
}
}