Package org.openjdk.jmh.results

Class Result<T extends Result<T>>

java.lang.Object

org.openjdk.jmh.results.Result<T>

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

AverageTimeResult, SampleTimeResult, ScalarDerivativeResult, ScalarResult, SingleShotResult, StackProfiler.StackResult, TextResult, ThroughputResult

public abstract class Result<T extends Result<T>>
extends Object
implements Serializable

Base class for all types of results that can be returned by a benchmark.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected final String	label
protected final AggregationPolicy	policy
protected final ResultRole	role
protected final Statistics	statistics
protected final String	unit

Constructor Summary

Constructors

Constructor	Description
Result(ResultRole role, String label, Statistics s, String unit, AggregationPolicy policy)

Method Summary

Modifier and Type	Method	Description
protected String	distributionExtendedInfo()
String	extendedInfo()	Print extended result information
protected Collection<? extends Result>	getDerivativeResults()
protected abstract Aggregator<T>	getIterationAggregator()	Iteration aggregator combines the iteration results into benchmar result.
String	getLabel()	Return the result label.
ResultRole	getRole()	Return the result role.
long	getSampleCount()	Get number of samples in the current result.
double	getScore()	The score for this result.
double[]	getScoreConfidence()	The score confidence interval for this result.
double	getScoreError()	The score error for this result.
final String	getScoreUnit()	The unit of the score for this result.
Statistics	getStatistics()	Return the statistics holding the subresults' values.
protected abstract Aggregator<T>	getThreadAggregator()	Thread aggregator combines the thread results into iteration result.
protected T	getZeroResult()	Returns "0" result.
protected static Statistics	of(double v)
protected String	simpleExtendedInfo()
String	toString()	Result as represented by a String.

Methods inherited from class java.lang.Object

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

Field Details

role

protected final ResultRole role

label

protected final String label

unit

protected final String unit

statistics

protected final Statistics statistics

policy

protected final AggregationPolicy policy

Constructor Details

Result

public Result(ResultRole role,
 String label,
 Statistics s,
 String unit,
 AggregationPolicy policy)

Method Details

of

protected static Statistics of(double v)

getLabel

public String getLabel()

Return the result label.

Returns:

result label

getRole

public ResultRole getRole()

Return the result role.

Returns:

result role

getStatistics

public Statistics getStatistics()

Return the statistics holding the subresults' values.

This method returns raw samples. The aggregation policy decides how to get the score out of these raw samples. Use getScore(), getScoreError(), and getScoreConfidence() for scalar results.

Returns:

statistics

getScoreUnit

public final String getScoreUnit()

The unit of the score for this result.

Returns:

String representation of the unit

getScore

public double getScore()

The score for this result.

Returns:

double representing the score

See Also:

• getScoreError()

getScoreError

public double getScoreError()

The score error for this result.

Returns:

score error, if available

See Also:

• getScore()

getScoreConfidence

public double[] getScoreConfidence()

The score confidence interval for this result.

Returns:

score confidence interval, if available; if not, the CI will match getScore()

See Also:

• getScore()

getSampleCount

public long getSampleCount()

Get number of samples in the current result.

Returns:

number of samples

getThreadAggregator

protected abstract Aggregator<T> getThreadAggregator()

Thread aggregator combines the thread results into iteration result.

Returns:

thread aggregator

getIterationAggregator

protected abstract Aggregator<T> getIterationAggregator()

Iteration aggregator combines the iteration results into benchmar result.

Returns:

iteration aggregator

getZeroResult

protected T getZeroResult()

Returns "0" result. This is used for un-biased aggregation of secondary results. For instance, profilers might omit results in some iterations, thus we should pretend there were 0 results.

Returns:

result that represents "empty" result, null if no sensible "empty" result can be created

getDerivativeResults

protected Collection<? extends Result> getDerivativeResults()

Returns:

derivative results for this result. These do not participate in aggregation, and computed on the spot from the aggregated result.

toString

public String toString()

Result as represented by a String.

Overrides:

toString in class Object

Returns:

String with the result and unit

extendedInfo

public String extendedInfo()

Print extended result information

Returns:

String with extended info

simpleExtendedInfo

protected String simpleExtendedInfo()

distributionExtendedInfo

protected String distributionExtendedInfo()