org.spf4j.stackmonitor

Class JmhDetailedJFRProfiler

java.lang.Object

org.spf4j.stackmonitor.JmhDetailedJFRProfiler

All Implemented Interfaces:

org.openjdk.jmh.profile.ExternalProfiler, org.openjdk.jmh.profile.InternalProfiler, org.openjdk.jmh.profile.Profiler

public final class JmhDetailedJFRProfiler
extends Object
implements org.openjdk.jmh.profile.ExternalProfiler, org.openjdk.jmh.profile.InternalProfiler

A profiler based on Java Flight Recorder. Inspired a bit by a JMH contrib from Jason Zaugg. This implementation has been tested to work on a JDK 11 u8. Relies on FlightRecorderMXBean being available, with the recorder option "destination" implemented.

Author:

Zoltan Farkas

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	JmhDetailedJFRProfiler.PostProcessor

Constructor Summary

Constructors

Constructor and Description
JmhDetailedJFRProfiler() required for serviceloader.
JmhDetailedJFRProfiler(String initLine)

Method Summary

Modifier and Type	Method and Description
Collection<String>	addJVMInvokeOptions(org.openjdk.jmh.infra.BenchmarkParams params)
Collection<String>	addJVMOptions(org.openjdk.jmh.infra.BenchmarkParams params)
Collection<? extends org.openjdk.jmh.results.Result>	afterIteration(org.openjdk.jmh.infra.BenchmarkParams benchmarkParams, org.openjdk.jmh.infra.IterationParams iterationParams, org.openjdk.jmh.results.IterationResult iterationResult)
Collection<? extends org.openjdk.jmh.results.Result>	afterTrial(org.openjdk.jmh.results.BenchmarkResult br, long pid, File stdOut, File stdErr)
boolean	allowPrintErr()
boolean	allowPrintOut()
void	beforeIteration(org.openjdk.jmh.infra.BenchmarkParams benchmarkParams, org.openjdk.jmh.infra.IterationParams iterationParams)
void	beforeTrial(org.openjdk.jmh.infra.BenchmarkParams benchmarkParams)
String	getDescription()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

JmhDetailedJFRProfiler

public JmhDetailedJFRProfiler()

required for serviceloader.

JmhDetailedJFRProfiler

public JmhDetailedJFRProfiler(String initLine)
                       throws org.openjdk.jmh.profile.ProfilerException

Throws:

org.openjdk.jmh.profile.ProfilerException

Method Detail

beforeIteration

public void beforeIteration(org.openjdk.jmh.infra.BenchmarkParams benchmarkParams,
                            org.openjdk.jmh.infra.IterationParams iterationParams)

Specified by:

beforeIteration in interface org.openjdk.jmh.profile.InternalProfiler

afterIteration

public Collection<? extends org.openjdk.jmh.results.Result> afterIteration(org.openjdk.jmh.infra.BenchmarkParams benchmarkParams,
                                                                           org.openjdk.jmh.infra.IterationParams iterationParams,
                                                                           org.openjdk.jmh.results.IterationResult iterationResult)

Specified by:

afterIteration in interface org.openjdk.jmh.profile.InternalProfiler

addJVMInvokeOptions

public Collection<String> addJVMInvokeOptions(org.openjdk.jmh.infra.BenchmarkParams params)

Specified by:

addJVMInvokeOptions in interface org.openjdk.jmh.profile.ExternalProfiler

addJVMOptions

public Collection<String> addJVMOptions(org.openjdk.jmh.infra.BenchmarkParams params)

Specified by:

addJVMOptions in interface org.openjdk.jmh.profile.ExternalProfiler

beforeTrial

public void beforeTrial(org.openjdk.jmh.infra.BenchmarkParams benchmarkParams)

Specified by:

beforeTrial in interface org.openjdk.jmh.profile.ExternalProfiler

afterTrial

public Collection<? extends org.openjdk.jmh.results.Result> afterTrial(org.openjdk.jmh.results.BenchmarkResult br,
                                                                       long pid,
                                                                       File stdOut,
                                                                       File stdErr)

Specified by:

afterTrial in interface org.openjdk.jmh.profile.ExternalProfiler

allowPrintOut

public boolean allowPrintOut()

Specified by:

allowPrintOut in interface org.openjdk.jmh.profile.ExternalProfiler

allowPrintErr

public boolean allowPrintErr()

Specified by:

allowPrintErr in interface org.openjdk.jmh.profile.ExternalProfiler

getDescription

public String getDescription()

Specified by:

getDescription in interface org.openjdk.jmh.profile.Profiler

toString

public String toString()

Overrides:

toString in class Object