se.jiderhamn

Class HeapDumper

java.lang.Object

se.jiderhamn.HeapDumper

public class HeapDumper
extends java.lang.Object

Class that helps programatically dumping the heap. Heavily inspired by https://blogs.oracle.com/sundararajan/entry/programmatically_dumping_heap_from_java

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	HEAP_DUMP_EXTENSION Filename extension for heap dumps
private static java.lang.String	HOTSPOT_BEAN_NAME The name of the HotSpot Diagnostic MBean
private static com.sun.management.HotSpotDiagnosticMXBean	hotSpotDiagnosticMBean HotSpot diagnostic MBean

Constructor Summary

Constructors

Constructor and Description
HeapDumper()

Method Summary

Modifier and Type	Method and Description
static void	dumpHeap(java.io.File file, boolean live) Dump the heap snapshot into a file.
private static com.sun.management.HotSpotDiagnosticMXBean	getHotSpotDiagnosticMBean() Get HotSpot diagnostic MBean

Methods inherited from class java.lang.Object

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

Field Detail

HOTSPOT_BEAN_NAME

private static final java.lang.String HOTSPOT_BEAN_NAME

The name of the HotSpot Diagnostic MBean

See Also:

Constant Field Values

HEAP_DUMP_EXTENSION

public static final java.lang.String HEAP_DUMP_EXTENSION

Filename extension for heap dumps

See Also:

Constant Field Values

hotSpotDiagnosticMBean

private static volatile com.sun.management.HotSpotDiagnosticMXBean hotSpotDiagnosticMBean

HotSpot diagnostic MBean

Constructor Detail

HeapDumper

public HeapDumper()

Method Detail

dumpHeap

public static void dumpHeap(java.io.File file,
                            boolean live)
                     throws java.lang.ClassNotFoundException

Dump the heap snapshot into a file.

Parameters:

file - The file in which the dump will be stored

live - Dump only live objects?

Throws:

java.lang.ClassNotFoundException

getHotSpotDiagnosticMBean

private static com.sun.management.HotSpotDiagnosticMXBean getHotSpotDiagnosticMBean()

Get HotSpot diagnostic MBean