org.openjdk.jmh.runner

Class Runner

java.lang.Object

org.openjdk.jmh.runner.Runner

public class Runner
extends Object

Runner executes JMH benchmarks.

This is the entry point for JMH Java API.

Runner is not usually reusable. After you execute any method on the Runner, you should digest the results, give up on current Runner, and instantiate another one. This class may be turned into static class in future releases.

Field Summary

Fields

Modifier and Type	Field and Description
protected Options	options
protected OutputFormat	out

Constructor Summary

Constructors

Constructor and Description
Runner(Options options) Create Runner with the given options.
Runner(Options options, OutputFormat format) Create runner with the custom OutputFormat.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	etaAfterBenchmark(BenchmarkParams params)
protected void	etaAfterBenchmarks()
protected void	etaBeforeBenchmark()
protected void	etaBeforeBenchmarks(Collection<ActionPlan> plans)
void	list() Print matching benchmarks into output.
Collection<RunResult>	run() Run benchmarks.
protected void	runBenchmark(BenchmarkParams benchParams, org.openjdk.jmh.runner.BenchmarkHandler handler, org.openjdk.jmh.runner.IterationResultAcceptor acceptor)
protected Multimap<BenchmarkParams,BenchmarkResult>	runBenchmarksEmbedded(ActionPlan actionPlan)
protected void	runBenchmarksForked(ActionPlan actionPlan, org.openjdk.jmh.runner.IterationResultAcceptor acceptor)
RunResult	runSingle() Shortcut method for the single benchmark execution.
boolean	runSystemGC() Execute System.gc() if we the System.gc option is set.

Methods inherited from class java.lang.Object

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

Field Detail

options

protected final Options options

out

protected final OutputFormat out

Constructor Detail

Runner

public Runner(Options options,
      OutputFormat format)

Create runner with the custom OutputFormat.

Parameters:

options - options to use

format - OutputFormat to use

Runner

public Runner(Options options)

Create Runner with the given options. This method sets up the OutputFormat as mandated by options.

Parameters:

options - options to use.

Method Detail

list

public void list()

Print matching benchmarks into output.

runSingle

public RunResult runSingle()
                    throws RunnerException

Shortcut method for the single benchmark execution. This method is handy when Options describe only the single benchmark to run.

Returns:

benchmark result

Throws:

RunnerException - if more than one benchmark is found, or no results are returned

run

public Collection<RunResult> run()
                          throws RunnerException

Run benchmarks.

Returns:

map of benchmark results

Throws:

RunnerException - if something goes wrong

runBenchmarksForked

protected void runBenchmarksForked(ActionPlan actionPlan,
                       org.openjdk.jmh.runner.IterationResultAcceptor acceptor)

runBenchmarksEmbedded

protected Multimap<BenchmarkParams,BenchmarkResult> runBenchmarksEmbedded(ActionPlan actionPlan)

etaAfterBenchmark

protected void etaAfterBenchmark(BenchmarkParams params)

etaBeforeBenchmarks

protected void etaBeforeBenchmarks(Collection<ActionPlan> plans)

etaBeforeBenchmark

protected void etaBeforeBenchmark()

etaAfterBenchmarks

protected void etaAfterBenchmarks()

runBenchmark

protected void runBenchmark(BenchmarkParams benchParams,
                org.openjdk.jmh.runner.BenchmarkHandler handler,
                org.openjdk.jmh.runner.IterationResultAcceptor acceptor)

runSystemGC

public boolean runSystemGC()

Execute System.gc() if we the System.gc option is set.

Returns:

true if we did