Module id.xfunction

Package id.xfunction

Class Microprofiler

Object

Microprofiler

public class Microprofiler
extends Object

Measures different execution time of functions.

Constructor Summary

Constructors

Constructor	Description
Microprofiler()

Method Summary

Modifier and Type	Method	Description
static long	gcCount()
long	measureExecutionTime(Runnable r)	Chooses the best available on current JVM way to measure the execution time and returns it in milliseconds.
long	measureRealTime(Runnable r)	Measures execution time in milliseconds using wall clock.
long	measureUserCpuTime(Runnable r)	Measures real CPU execution time in milliseconds.

Methods inherited from class Object

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

Constructor Details

Microprofiler

public Microprofiler()

Method Details

measureUserCpuTime

public long measureUserCpuTime(Runnable r)

Measures real CPU execution time in milliseconds.

Returns:

real CPU execution time in milliseconds or -1 if it is not possible to calculate

measureRealTime

public long measureRealTime(Runnable r)

Measures execution time in milliseconds using wall clock. It is not precise time since CPU may perform context switch to another thread but the clock will still be ticking.

measureExecutionTime

public long measureExecutionTime(Runnable r)

Chooses the best available on current JVM way to measure the execution time and returns it in milliseconds.

gcCount

public static long gcCount()