Package org.jppf.management.diagnostics

Class ThreadDump

java.lang.Object

org.jppf.management.diagnostics.ThreadDump

All Implemented Interfaces:

Serializable

public class ThreadDump
extends Object
implements Serializable

This class encapsulates a JVM thread dump, including deadlocks information when available.

Author:

Laurent Cohen

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ThreadDump(ThreadMXBean threadMXBean)	Create this thread dump from the specified thread mxbean.

Method Summary

Modifier and Type	Method	Description
long[]	getDeadlockedThreads()	Get the ids of the deadlock threads, if any.
Map<Long,ThreadInformation>	getThreads()	Get information on the threads.
String	toHTMLString(String title, boolean includeBody, int fontSize)	Print this thread dump to an HTML formatted string.
String	toPlainTextString(String title)	Print this thread dump to a plain text formatted string.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

ThreadDump

public ThreadDump(ThreadMXBean threadMXBean)

Create this thread dump from the specified thread mxbean.

Parameters:

threadMXBean - the thread MXBean to get the information from.

Method Details

getThreads

public Map<Long,ThreadInformation> getThreads()

Get information on the threads.

Returns:

a mapping of ThreadInformation objects to their thread id, or null if no thread information is available.

getDeadlockedThreads

public long[] getDeadlockedThreads()

Get the ids of the deadlock threads, if any.

Returns:

the ids as an array of long values, or null if none exists.

toString

public String toString()

Overrides:

toString in class Object

toPlainTextString

public String toPlainTextString(String title)

Print this thread dump to a plain text formatted string.

Parameters:

title - the title given to the thread dump.

Returns:

the thread dump printed to a plain test formatted string, or null if it could not be printed.

toHTMLString

public String toHTMLString(String title,
 boolean includeBody,
 int fontSize)

Print this thread dump to an HTML formatted string.

Parameters:

title - the title given to the thread dump.

includeBody - whether to add the <html> and <body> tags.

fontSize - the size of the font used to write the thread dump.

Returns:

the thread dump printed to an HTML string, or null if it could not be printed.