com.tagtraum.perf.gcviewer.imp

Class DataReaderIBM_J9_5_0

java.lang.Object

com.tagtraum.perf.gcviewer.imp.AbstractDataReader

com.tagtraum.perf.gcviewer.imp.DataReaderIBM_J9_5_0

All Implemented Interfaces:

DataReader

public class DataReaderIBM_J9_5_0
extends AbstractDataReader

Parses -verbose:gc output from IBM J9 JVM 5.0. Uses SAX parser and custom handler to read in GC information. Note: Only supports -Xgcpolicy:optthruput (the default GC policy). Note(2): This implementation uses the "Young" area to represent the J9 idea of the Small-Object-Area (soa) and the "Old" generation area for the Large- Object-Area (loa).

Author:

Justin Kilimnik (IBM)

Field Summary

Fields inherited from class com.tagtraum.perf.gcviewer.imp.AbstractDataReader

gcResource, in

Constructor Summary

Constructors

Constructor and Description
DataReaderIBM_J9_5_0(GCResource gcResource, InputStream in)

Method Summary

Modifier and Type	Method and Description
GCModel	read() A call to this method should read a GCModel.

Methods inherited from class com.tagtraum.perf.gcviewer.imp.AbstractDataReader

getDataReaderTools, getLogger, shouldContinue

Methods inherited from class java.lang.Object

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

Constructor Detail

DataReaderIBM_J9_5_0

public DataReaderIBM_J9_5_0(GCResource gcResource,
                            InputStream in)
                     throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

Method Detail

read

public GCModel read()
             throws IOException

Description copied from interface: DataReader

A call to this method should read a GCModel.

Specified by:

read in interface DataReader

Specified by:

read in class AbstractDataReader

Returns:

GCModel representing a gc log file

Throws:

IOException - thrown, when an exception reading the file occurred