Package org.openjdk.jmh.profile

Class LinuxPerfAsmProfiler

java.lang.Object

org.openjdk.jmh.profile.AbstractPerfAsmProfiler

org.openjdk.jmh.profile.LinuxPerfAsmProfiler

All Implemented Interfaces:

ExternalProfiler, Profiler

public class LinuxPerfAsmProfiler
extends AbstractPerfAsmProfiler

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	LinuxPerfAsmProfiler.PerfLine

Nested classes/interfaces inherited from class org.openjdk.jmh.profile.AbstractPerfAsmProfiler

AbstractPerfAsmProfiler.ASMLine, AbstractPerfAsmProfiler.Assembly, AbstractPerfAsmProfiler.GeneratedRegion, AbstractPerfAsmProfiler.MethodDesc, AbstractPerfAsmProfiler.NativeRegion, AbstractPerfAsmProfiler.PerfEvents, AbstractPerfAsmProfiler.Region, AbstractPerfAsmProfiler.UnknownRegion

Field Summary

Fields

Modifier and Type	Field	Description
private joptsimple.OptionSpec<java.lang.Long>	optFrequency
private long	sampleFrequency

Fields inherited from class org.openjdk.jmh.profile.AbstractPerfAsmProfiler

hsLog, perfBinData, perfParsedData, requestedEventNames, set

Constructor Summary

Constructors

Constructor	Description
LinuxPerfAsmProfiler(java.lang.String initLine)

Method Summary

Modifier and Type	Method	Description
java.util.Collection<java.lang.String>	addJVMInvokeOptions(BenchmarkParams params)	Prepend JVM invocation with these commands.
protected void	addMyOptions(joptsimple.OptionParser parser)
java.lang.String	getDescription()	Human-readable one-line description of the profiler.
protected void	parseEvents()	Parse profiler events from binary to text form.
(package private) static LinuxPerfAsmProfiler.PerfLine	parsePerfLine(java.lang.String line)
protected java.lang.String	perfBinaryExtension()	Get perf binary data extension (optional).
protected AbstractPerfAsmProfiler.PerfEvents	readEvents(double skipMs, double lenMs)	Read parsed events.
protected java.util.List<java.lang.String>	stripEventNames(java.util.List<java.lang.String> events)	Some profilers strip modifiers from event names.
(package private) static java.util.List<java.lang.String>	stripPerfEventNames(java.util.List<java.lang.String> events)

Methods inherited from class org.openjdk.jmh.profile.AbstractPerfAsmProfiler

addJVMOptions, afterTrial, allowPrintErr, allowPrintOut, beforeTrial

Methods inherited from class java.lang.Object

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

Field Detail

sampleFrequency

private final long sampleFrequency

optFrequency

private joptsimple.OptionSpec<java.lang.Long> optFrequency

Constructor Detail

LinuxPerfAsmProfiler

public LinuxPerfAsmProfiler(java.lang.String initLine)
                     throws ProfilerException

Throws:

ProfilerException

Method Detail

addMyOptions

protected void addMyOptions(joptsimple.OptionParser parser)

Specified by:

addMyOptions in class AbstractPerfAsmProfiler

addJVMInvokeOptions

public java.util.Collection<java.lang.String> addJVMInvokeOptions(BenchmarkParams params)

Description copied from interface: ExternalProfiler

Prepend JVM invocation with these commands.

Parameters:

params - benchmark parameters used for current launch

Returns:

commands to prepend for JVM launch

getDescription

public java.lang.String getDescription()

Description copied from interface: Profiler

Human-readable one-line description of the profiler.

Returns:

description

parseEvents

protected void parseEvents()

Description copied from class: AbstractPerfAsmProfiler

Parse profiler events from binary to text form.

Specified by:

parseEvents in class AbstractPerfAsmProfiler

parsePerfLine

static LinuxPerfAsmProfiler.PerfLine parsePerfLine(java.lang.String line)

readEvents

protected AbstractPerfAsmProfiler.PerfEvents readEvents(double skipMs,
                                                        double lenMs)

Description copied from class: AbstractPerfAsmProfiler

Read parsed events.

Specified by:

readEvents in class AbstractPerfAsmProfiler

Parameters:

skipMs - Milliseconds to skip.

lenMs - Milliseconds to capture after skip

Returns:

Events.

perfBinaryExtension

protected java.lang.String perfBinaryExtension()

Description copied from class: AbstractPerfAsmProfiler

Get perf binary data extension (optional).

Specified by:

perfBinaryExtension in class AbstractPerfAsmProfiler

Returns:

Extension.

stripEventNames

protected java.util.List<java.lang.String> stripEventNames(java.util.List<java.lang.String> events)

Description copied from class: AbstractPerfAsmProfiler

Some profilers strip modifiers from event names. To properly match the events in shared code, we need to know what those events were stripped to.

Overrides:

stripEventNames in class AbstractPerfAsmProfiler

Returns:

stripped events

stripPerfEventNames

static java.util.List<java.lang.String> stripPerfEventNames(java.util.List<java.lang.String> events)