AbstractExternalProfiler.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * accompanied this code).
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package org.openjdk.jmh.it.profilers.order;

import org.openjdk.jmh.infra.BenchmarkParams;
import org.openjdk.jmh.profile.ExternalProfiler;
import org.openjdk.jmh.results.BenchmarkResult;
import org.openjdk.jmh.results.Result;

import java.io.File;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.TimeUnit;

public abstract class AbstractExternalProfiler implements ExternalProfiler {

    private final String pfx;
    protected long start, stop;

    protected AbstractExternalProfiler(String pfx) {
        this.pfx = pfx;
    }

    @Override
    public boolean allowPrintErr() {
        return true;
    }

    @Override
    public boolean allowPrintOut() {
        return true;
    }

    @Override
    public Collection<String> addJVMOptions(BenchmarkParams params) {
        return Collections.emptyList();
    }

    @Override
    public Collection<String> addJVMInvokeOptions(BenchmarkParams params) {
        return Collections.emptyList();
    }

    @Override
    public void beforeTrial(BenchmarkParams benchmarkParams) {
        start = System.nanoTime();
        try {
            TimeUnit.MILLISECONDS.sleep(100);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    @Override
    public Collection<? extends Result> afterTrial(BenchmarkResult br, long pid, File stdOut, File stdErr) {
        stop = System.nanoTime();
        try {
            TimeUnit.MILLISECONDS.sleep(100);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return Arrays.asList(
                new ProfilerTimestamp(pfx + "start", start),
                new ProfilerTimestamp(pfx + "stop", stop)
        );
    }

    @Override
    public String getDescription() {
        return "Integration Test External Profiler";
    }

}