Package org.openjdk.jmh.profile
Class LinuxPerfProfiler
java.lang.Object
org.openjdk.jmh.profile.LinuxPerfProfiler
- All Implemented Interfaces:
ExternalProfiler
,Profiler
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Nested Class Summary
Nested ClassesModifier and TypeClassDescription(package private) static class
(package private) static class
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionaddJVMInvokeOptions
(BenchmarkParams params) Prepend JVM invocation with these commands.addJVMOptions
(BenchmarkParams params) Add JVM these options to the run.Collection
<? extends Result> afterTrial
(BenchmarkResult br, long pid, File stdOut, File stdErr) Run this code after the trial is done.boolean
If target VM communicates with profiler with standard error, this method can be used to shun the output to console.boolean
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.Human-readable one-line description of the profiler.private LinuxPerfProfiler.PerfResult
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Field Details
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isDelayed
private final boolean isDelayed -
delayMs
private final int delayMs -
events
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Constructor Details
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LinuxPerfProfiler
- Throws:
ProfilerException
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Method Details
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addJVMInvokeOptions
Description copied from interface:ExternalProfiler
Prepend JVM invocation with these commands.- Specified by:
addJVMInvokeOptions
in interfaceExternalProfiler
- Parameters:
params
- benchmark parameters used for current launch- Returns:
- commands to prepend for JVM launch
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addJVMOptions
Description copied from interface:ExternalProfiler
Add JVM these options to the run.- Specified by:
addJVMOptions
in interfaceExternalProfiler
- Parameters:
params
- benchmark parameters used for current launch- Returns:
- options to add to JVM launch
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beforeTrial
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 interfaceExternalProfiler
- Parameters:
params
- benchmark parameters used for current launch
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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 interfaceExternalProfiler
- Parameters:
br
- benchmark result that was the result of the trialpid
- pid that the forked JVM hadstdOut
- file containing the standard output from the benchmark JVMstdErr
- file containing the standard error from the benchmark JVM- Returns:
- profiler results
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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 interfaceExternalProfiler
- Returns:
- returns true, if profiler allows harness to print out the standard output
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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 interfaceExternalProfiler
- Returns:
- returns true, if profiler allows harness to print out the standard errpr
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getDescription
Description copied from interface:Profiler
Human-readable one-line description of the profiler.- Specified by:
getDescription
in interfaceProfiler
- Returns:
- description
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process
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