Package org.opencms.main

Class CmsSingleThreadDumperThread.SampleNode

java.lang.Object

org.opencms.main.CmsSingleThreadDumperThread.SampleNode

Enclosing class:

CmsSingleThreadDumperThread

public static class CmsSingleThreadDumperThread.SampleNode
extends java.lang.Object

Node for the summary tree generated from the thread dumps.

The tree keeps track of sample counts for stack trace frames.

Constructor Summary

Constructors

Constructor	Description
SampleNode(java.lang.Object key)	Creates a new node.

Method Summary

Modifier and Type	Method	Description
void	appendToXml(org.dom4j.Element parent)	Dumps the tree node to XML.
static int	compareBySamplesDescending(CmsSingleThreadDumperThread.SampleNode a, CmsSingleThreadDumperThread.SampleNode b)	Compare nodes by descending sample count.
java.lang.Object	getKey()	Gets the key of the node.
CmsSingleThreadDumperThread.SampleNode	getOrAddChild(java.lang.Object key)	Gets the child node for the given key, creating it it it doesn't exist yet.
long	getSamples()	Returns the sample count.
boolean	hasChildren()	Check if this node has children.
void	increment()	Increments the sample count for this node.
static void	incrementPath(CmsSingleThreadDumperThread.SampleNode root, java.util.List<?> path)	Increment sample count for all nodes along the given path.
static java.util.List<CmsSingleThreadDumperThread.SampleNode>	nodesForPath(CmsSingleThreadDumperThread.SampleNode root, java.util.List<?> path)	Given a path consisting of a list of node keys, this method collects all nodes along that path, including the given root node, and creates nodes if they don't exist in the tree yet.
void	sortChildren()	Sorts the children of this node by descending sample count.
void	sortTree()	Recursively sorts this node's and all its descendants' children.

Methods inherited from class java.lang.Object

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

Constructor Detail

SampleNode

public SampleNode(java.lang.Object key)

Creates a new node.

Parameters:

key - the key of the node, identifying it among its siblings

Method Detail

compareBySamplesDescending

public static int compareBySamplesDescending(CmsSingleThreadDumperThread.SampleNode a,
                                             CmsSingleThreadDumperThread.SampleNode b)

Compare nodes by descending sample count.

Parameters:

a - first node

b - second node

Returns:

the comparison result

incrementPath

public static void incrementPath(CmsSingleThreadDumperThread.SampleNode root,
                                 java.util.List<?> path)

Increment sample count for all nodes along the given path.

Parameters:

root - the root node

path - a sequence of keys constituting a path in the tree

nodesForPath

public static java.util.List<CmsSingleThreadDumperThread.SampleNode> nodesForPath(CmsSingleThreadDumperThread.SampleNode root,
                                                                                  java.util.List<?> path)

Given a path consisting of a list of node keys, this method collects all nodes along that path, including the given root node, and creates nodes if they don't exist in the tree yet.

Parameters:

root - the root of the tree

path - the path

Returns:

the sequence of nodes along the path

appendToXml

public void appendToXml(org.dom4j.Element parent)

Dumps the tree node to XML.

Parameters:

parent - the parent XML to append the XML to

getKey

public java.lang.Object getKey()

Gets the key of the node.

Returns:

the key of the node

getOrAddChild

public CmsSingleThreadDumperThread.SampleNode getOrAddChild(java.lang.Object key)

Gets the child node for the given key, creating it it it doesn't exist yet.

Parameters:

key - the key

Returns:

the child for the key

getSamples

public long getSamples()

Returns the sample count.

Returns:

the sample count

hasChildren

public boolean hasChildren()

Check if this node has children.

Returns:

true if this node has children

increment

public void increment()

Increments the sample count for this node.

sortChildren

public void sortChildren()

Sorts the children of this node by descending sample count.

sortTree

public void sortTree()

Recursively sorts this node's and all its descendants' children.