org.vanilladb.core.util

Class Profiler

java.lang.Object

org.vanilladb.core.util.Profiler

All Implemented Interfaces:

Runnable

public class Profiler
extends Object
implements Runnable

A non-agent-based CPU profiler similar to

 java -agentlib:hprof=cpu=samples ToBeProfiledClass
 

but accepts filters and can be started/stopped at any time.

Constructor Summary

Constructors

Constructor and Description
Profiler()

Method Summary

Modifier and Type	Method and Description
String	getMethodCsv() Stop and obtain the self execution time of methods, each as a row in CSV format.
String	getPackageCsv() Stop and obtain the self execution time of packages, each as a row in CSV format.
String	getTopLines(int num) Stop and obtain the top lines, ordered by their execution time.
String	getTopMethods(int num) Stop and obtain the top methods, ordered by their self execution time.
String	getTopPackages(int num) Stop and obtain the top packages, ordered by their self execution time.
void	pauseCollecting() Pause collecting.
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

Constructor Detail

Profiler

public Profiler()

Method Detail

startCollecting

public void startCollecting()

Start collecting profiling data.

stopCollecting

public void stopCollecting()

Stop collecting.

pauseCollecting

public void pauseCollecting()

Pause collecting.

run

public void run()

Specified by:

run in interface Runnable

getTopPackages

public String getTopPackages(int num)

Stop and obtain the top packages, ordered by their self execution time.

Parameters:

num - number of top packages

Returns:

the top packages

getPackageCsv

public String getPackageCsv()

Stop and obtain the self execution time of packages, each as a row in CSV format.

Returns:

the execution time of packages in CSV format

getTopMethods

public String getTopMethods(int num)

Stop and obtain the top methods, ordered by their self execution time.

Parameters:

num - number of top methods

Returns:

the top methods

getMethodCsv

public String getMethodCsv()

Stop and obtain the self execution time of methods, each as a row in CSV format.

Returns:

the execution time of methods in CSV format

getTopLines

public String getTopLines(int num)

Stop and obtain the top lines, ordered by their execution time.

Parameters:

num - number of top lines

Returns:

the top lines