Timer

java.lang.Object

com.decs.application.services.Timer

@Service public class Timer extends Object

Timer Class

This class handles time measurements in the system's execution environment (Java Virtual Machine)

Version:: 1.0
Author:: Bruno Guiomar

Field Summary

Fields

Modifier and Type

Field

Description

private ThreadMXBean

threadMXBean
Constructor Summary

Constructors

Constructor

Description

Timer()

Class Constructor
Method Summary

Modifier and Type

Method

Description

static long

computeTime(long initial, long finish)

Computes the elapsed wall-clock time between two instants

static long

getCPUTimestamp(ThreadMXBean threadMXBean)

static long

getWallClockTimestamp()

static long

nano2milis(long value)

Converts a value expressed in nanoseconds to milliseconds

static long

nano2seconds(long value)

Converts a value expressed in nanoseconds to seconds

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- threadMXBean
  
  private ThreadMXBean threadMXBean
Constructor Details
- Timer
  
  public Timer()
  
  Class Constructor
Method Details
- computeTime
  
  public static long computeTime(long initial, long finish)
  
  Computes the elapsed wall-clock time between two instants
  
  Parameters:
  
  initial - Initial instant
  
  finish - Final instant
  
  Returns:
  
  Elapsed wall-clock time between the final and initial instants
- getWallClockTimestamp
  
  public static long getWallClockTimestamp()
  
  Returns:
  
  Wall-clock timestamp in nanoseconds
- getCPUTimestamp
  
  public static long getCPUTimestamp(ThreadMXBean threadMXBean)
  
  Parameters:
  
  threadMXBean - Management interface object for the thread system of the JVM
  
  Returns:
  
  CPU timestamp in nanoseconds
- nano2milis
  
  public static long nano2milis(long value)
  
  Converts a value expressed in nanoseconds to milliseconds
  
  Parameters:
  
  value - Value in nanoseconds
  
  Returns:
  
  Value in milliseconds
- nano2seconds
  
  public static long nano2seconds(long value)
  
  Converts a value expressed in nanoseconds to seconds
  
  Parameters:
  
  value - Value in nanoseconds
  
  Returns:
  
  Value in seconds