org.h2.util

Class Profiler

java.lang.Object

org.h2.util.Profiler

All Implemented Interfaces:

Runnable

public class Profiler
extends Object
implements Runnable

A simple CPU profiling tool similar to java -Xrunhprof.

Field Summary

Fields

Modifier and Type	Field and Description
int	depth
int	interval
boolean	paused

Constructor Summary

Constructors

Constructor and Description
Profiler()

Method Summary

Methods

Modifier and Type	Method and Description
static Instrumentation	getInstrumentation() Get the instrumentation object if started as an agent.
String	getTop(int count) Get the top stack traces.
static void	premain(String agentArgs, Instrumentation inst) This method is called when the agent is installed.
void	run()
void	startCollecting() Start collecting profiling data.
void	stopCollecting() Stop collecting.

Methods inherited from class java.lang.Object

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

Field Detail

interval

public int interval

depth

public int depth

paused

public boolean paused

Constructor Detail

Profiler

public Profiler()

Method Detail

premain

public static void premain(String agentArgs,
           Instrumentation inst)

This method is called when the agent is installed.

Parameters:

agentArgs - the agent arguments

inst - the instrumentation object

getInstrumentation

public static Instrumentation getInstrumentation()

Get the instrumentation object if started as an agent.

Returns:

the instrumentation, or null

startCollecting

public void startCollecting()

Start collecting profiling data.

stopCollecting

public void stopCollecting()

Stop collecting.

run

public void run()

Specified by:

run in interface Runnable

getTop

public String getTop(int count)

Get the top stack traces.

Parameters:

count - the maximum number of stack traces

Returns:

the stack traces.