Package io.airlift.stats

Class CpuTimer.CpuDuration

java.lang.Object

io.airlift.stats.CpuTimer.CpuDuration

Enclosing class:

CpuTimer

public static class CpuTimer.CpuDuration
extends Object

Constructor Summary

Constructors

Constructor	Description
CpuDuration()
CpuDuration(io.airlift.units.Duration wall, io.airlift.units.Duration cpu, io.airlift.units.Duration user)

Method Summary

Modifier and Type	Method	Description
CpuTimer.CpuDuration	add(CpuTimer.CpuDuration cpuDuration)
io.airlift.units.Duration	getCpu()
io.airlift.units.Duration	getUser()	This method will report zero duration when no user time was collected.
Optional<io.airlift.units.Duration>	getUserIfPresent()
io.airlift.units.Duration	getWall()
boolean	hasUser()
CpuTimer.CpuDuration	subtract(CpuTimer.CpuDuration cpuDuration)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

CpuDuration

public CpuDuration()

CpuDuration

public CpuDuration(io.airlift.units.Duration wall,
 io.airlift.units.Duration cpu,
 @Nullable
 io.airlift.units.Duration user)

Method Details

getWall

public io.airlift.units.Duration getWall()

getCpu

public io.airlift.units.Duration getCpu()

hasUser

public boolean hasUser()

getUser

public io.airlift.units.Duration getUser()

This method will report zero duration when no user time was collected. Check hasUser() or use getUserIfPresent() in order distinguish a true zero user CPU time from no value being present.

Returns:

The user value if present, otherwise returns a value of zero nanoseconds

getUserIfPresent

public Optional<io.airlift.units.Duration> getUserIfPresent()

add

public CpuTimer.CpuDuration add(CpuTimer.CpuDuration cpuDuration)

subtract

public CpuTimer.CpuDuration subtract(CpuTimer.CpuDuration cpuDuration)

toString

public String toString()

Overrides:

toString in class Object