Package org.openjdk.jmh.profile

Class AbstractPerfAsmProfiler

java.lang.Object

org.openjdk.jmh.profile.AbstractPerfAsmProfiler

All Implemented Interfaces:

ExternalProfiler, Profiler

Direct Known Subclasses:

DTraceAsmProfiler, LinuxPerfAsmProfiler, WinPerfAsmProfiler

public abstract class AbstractPerfAsmProfiler
extends Object
implements ExternalProfiler

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	AbstractPerfAsmProfiler.PerfEvents

Field Summary

Fields

Modifier and Type	Field	Description
protected final TempFile	hsLog
protected final TempFile	perfBinData
protected final TempFile	perfParsedData
protected final List<String>	requestedEventNames
protected final joptsimple.OptionSet	set

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractPerfAsmProfiler(String initLine, String... events)

Method Summary

Modifier and Type	Method	Description
Collection<String>	addJVMOptions(BenchmarkParams params)	Add JVM these options to the run.
protected abstract void	addMyOptions(joptsimple.OptionParser parser)
Collection<? extends Result>	afterTrial(BenchmarkResult br, long pid, File stdOut, File stdErr)	Run this code after the trial is done.
boolean	allowPrintErr()	If target VM communicates with profiler with standard error, this method can be used to shun the output to console.
boolean	allowPrintOut()	If target VM communicates with profiler with standard output, this method can be used to shun the output to console.
void	beforeTrial(BenchmarkParams params)	Run this code before starting the trial.
protected abstract void	parseEvents()	Parse profiler events from binary to text form.
protected abstract String	perfBinaryExtension()	Get perf binary data extension (optional).
protected abstract AbstractPerfAsmProfiler.PerfEvents	readEvents(double skipMs, double lenMs)	Read parsed events.
protected List<String>	stripEventNames(List<String> src)	Some profilers strip modifiers from event names.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openjdk.jmh.profile.ExternalProfiler

addJVMInvokeOptions

Methods inherited from interface org.openjdk.jmh.profile.Profiler

getDescription

Field Details

requestedEventNames

protected final List<String> requestedEventNames

hsLog

protected final TempFile hsLog

perfBinData

protected final TempFile perfBinData

perfParsedData

protected final TempFile perfParsedData

set

protected final joptsimple.OptionSet set

Constructor Details

AbstractPerfAsmProfiler

protected AbstractPerfAsmProfiler(String initLine,
 String... events)
                           throws ProfilerException

Throws:

ProfilerException

Method Details

addMyOptions

protected abstract void addMyOptions(joptsimple.OptionParser parser)

addJVMOptions

public Collection<String> addJVMOptions(BenchmarkParams params)

Description copied from interface: ExternalProfiler

Add JVM these options to the run.

Specified by:

addJVMOptions in interface ExternalProfiler

Parameters:

params - benchmark parameters used for current launch

Returns:

options to add to JVM launch

beforeTrial

public void beforeTrial(BenchmarkParams params)

Description copied from interface: ExternalProfiler

Run this code before starting the trial. This method will execute before starting the benchmark JVM.

Specified by:

beforeTrial in interface ExternalProfiler

Parameters:

params - benchmark parameters used for current launch

afterTrial

public Collection<? extends Result> afterTrial(BenchmarkResult br,
 long pid,
 File stdOut,
 File stdErr)

Description copied from interface: ExternalProfiler

Run this code after the trial is done. This method will execute after benchmark JVM had stopped.

Specified by:

afterTrial in interface ExternalProfiler

Parameters:

br - benchmark result that was the result of the trial

pid - pid that the forked JVM had

stdOut - file containing the standard output from the benchmark JVM

stdErr - file containing the standard error from the benchmark JVM

Returns:

profiler results

allowPrintOut

public boolean allowPrintOut()

Description copied from interface: ExternalProfiler

If target VM communicates with profiler with standard output, this method can be used to shun the output to console. Profiler is responsible for consuming the standard output and printing the relevant data from there.

Specified by:

allowPrintOut in interface ExternalProfiler

Returns:

returns true, if profiler allows harness to print out the standard output

allowPrintErr

public boolean allowPrintErr()

Description copied from interface: ExternalProfiler

If target VM communicates with profiler with standard error, this method can be used to shun the output to console. Profiler is responsible for consuming the standard error and printing the relevant data from there.

Specified by:

allowPrintErr in interface ExternalProfiler

Returns:

returns true, if profiler allows harness to print out the standard errpr

parseEvents

protected abstract void parseEvents()

Parse profiler events from binary to text form.

readEvents

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

Read parsed events.

Parameters:

skipMs - Milliseconds to skip.

lenMs - Milliseconds to capture after skip

Returns:

Events.

stripEventNames

protected List<String> stripEventNames(List<String> src)

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.

Returns:

stripped events

perfBinaryExtension

protected abstract String perfBinaryExtension()

Get perf binary data extension (optional).

Returns:

Extension.