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Top Description Fields Constructors Methods
sun.jvm.hotspot.utilities

public Class HeapGXLWriter

extends AbstractHeapGraphWriter
Class Inheritance
Imports
java.io.*, java.util.*, sun.jvm.hotspot.oops.*, sun.jvm.hotspot.runtime.*

This class writes Java heap in Graph eXchange Language (GXL) format. GXL is an open standard for serializing arbitrary graphs in XML syntax.

A GXL document contains one or more graphs. A graph contains nodes and edges. Both nodes and edges can have attributes. graphs, nodes, edges and attributes are represented by XML elements graph, node, edge and attr respectively. Attributes can be typed. GXL supports locator, bool, int, float, bool, string, enum as well as set, seq, bag, tup types. Nodes must have a XML attribute 'id' that is unique id of the node in the GXL document. Edges must have 'from' and 'to' XML attributes that are ids of from and to nodes.

Java heap to GXL document mapping:

Java primitive to GXL type mapping:

Exact Java primitive type code is written in 'kind' attribute of 'attr' element. Type code is specified in JVM spec. second edition section 4.3.2 (Field Descriptor).
See Also
GXL, GXL DTD

Field Summary

Modifier and TypeField and Description
private static final String
ENCODING

private boolean
isArray

private PrintWriter
out

private List<OopField>
refFields

Inherited from sun.jvm.hotspot.utilities.AbstractHeapGraphWriter:
javaLangClassjavaLangStringjavaLangThread

Constructor Summary

AccessConstructor and Description
public
HeapGXLWriter()

Method Summary

Modifier and TypeMethod and Description
protected int
calculateOopDumpRecordSize(Oop oop)

Implements abstract sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.calculateOopDumpRecordSize.

private static String
escapeXMLChars(String s)

private static String
getID(Oop oop)

private static String
identifierToXMLName(String name)

public void
write(String fileName)

Implements sun.jvm.hotspot.utilities.HeapGraphWriter.write.

writes the heap graph in the given file

private void
writeArrayLength(Array array)

private void
writeAttribute(String name, String type, String value)

protected void
writeBooleanField(Oop oop, BooleanField field)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeBooleanField.

protected void
writeByteField(Oop oop, ByteField field)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeByteField.

protected void
writeCharField(Oop oop, CharField field)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeCharField.

protected void
writeClass(Instance instance)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeClass.

protected void
writeDoubleField(Oop oop, DoubleField field)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeDoubleField.

private void
writeEdge(Oop from, Oop to, String name)

private void
writeField(Field field, String type, String kind, String value)

protected void
writeFloatField(Oop oop, FloatField field)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeFloatField.

protected void
writeHeapFooter()

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeHeapFooter.

protected void
writeHeapHeader()

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeHeapHeader.

protected void
writeIntField(Oop oop, IntField field)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeIntField.

protected void
writeLongField(Oop oop, LongField field)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeLongField.

protected void
writeObjectArray(ObjArray array)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeObjectArray.

protected void
writeObjectFooter(Oop oop)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeObjectFooter.

protected void
writeObjectHeader(Oop oop)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeObjectHeader.

protected void
writePrimitiveArray(TypeArray array)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writePrimitiveArray.

protected void
writeReferenceField(Oop oop, OopField field)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeReferenceField.

protected void
writeShortField(Oop oop, ShortField field)

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeShortField.

private void
writeVMInfo()

Inherited from sun.jvm.hotspot.utilities.AbstractHeapGraphWriter:
handleRuntimeExceptionisJavaVisiblewritewriteGlobalJNIHandlewriteGlobalJNIHandleswriteHeapRecordEpiloguewriteHeapRecordProloguewriteHeapRecordProloguewriteInstancewriteInternalObjectwriteJavaThreadwriteJavaThreadswriteObjectwriteObjectFieldswriteObjectFieldswriteStickyClasseswriteStringwriteThread

Field Detail

ENCODINGback to summary
private static final String ENCODING
isArrayback to summary
private boolean isArray
outback to summary
private PrintWriter out
refFieldsback to summary
private List<OopField> refFields

Constructor Detail

HeapGXLWriterback to summary
public HeapGXLWriter()

Method Detail

calculateOopDumpRecordSizeback to summary
protected int calculateOopDumpRecordSize(Oop oop) throws IOException

Implements abstract sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.calculateOopDumpRecordSize.

Annotations
@Override
escapeXMLCharsback to summary
private static String escapeXMLChars(String s)
getIDback to summary
private static String getID(Oop oop)
identifierToXMLNameback to summary
private static String identifierToXMLName(String name)
writeback to summary
public void write(String fileName) throws IOException

Implements sun.jvm.hotspot.utilities.HeapGraphWriter.write.

Doc from sun.jvm.hotspot.utilities.HeapGraphWriter.write.

writes the heap graph in the given file

writeArrayLengthback to summary
private void writeArrayLength(Array array) throws IOException
writeAttributeback to summary
private void writeAttribute(String name, String type, String value)
writeBooleanFieldback to summary
protected void writeBooleanField(Oop oop, BooleanField field) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeBooleanField.

writeByteFieldback to summary
protected void writeByteField(Oop oop, ByteField field) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeByteField.

writeCharFieldback to summary
protected void writeCharField(Oop oop, CharField field) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeCharField.

writeClassback to summary
protected void writeClass(Instance instance) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeClass.

writeDoubleFieldback to summary
protected void writeDoubleField(Oop oop, DoubleField field) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeDoubleField.

writeEdgeback to summary
private void writeEdge(Oop from, Oop to, String name) throws IOException
writeFieldback to summary
private void writeField(Field field, String type, String kind, String value) throws IOException
writeFloatFieldback to summary
protected void writeFloatField(Oop oop, FloatField field) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeFloatField.

writeHeapFooterback to summary
protected void writeHeapFooter() throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeHeapFooter.

writeHeapHeaderback to summary
protected void writeHeapHeader() throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeHeapHeader.

writeIntFieldback to summary
protected void writeIntField(Oop oop, IntField field) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeIntField.

writeLongFieldback to summary
protected void writeLongField(Oop oop, LongField field) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeLongField.

writeObjectArrayback to summary
protected void writeObjectArray(ObjArray array) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeObjectArray.

writeObjectFooterback to summary
protected void writeObjectFooter(Oop oop) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeObjectFooter.

writeObjectHeaderback to summary
protected void writeObjectHeader(Oop oop) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeObjectHeader.

writePrimitiveArrayback to summary
protected void writePrimitiveArray(TypeArray array) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writePrimitiveArray.

writeReferenceFieldback to summary
protected void writeReferenceField(Oop oop, OopField field) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeReferenceField.

writeShortFieldback to summary
protected void writeShortField(Oop oop, ShortField field) throws IOException

Overrides sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.writeShortField.

writeVMInfoback to summary
private void writeVMInfo() throws IOException