package org.openjdk.jmh.profile;
import org.openjdk.jmh.infra.BenchmarkParams;
import org.openjdk.jmh.infra.IterationParams;
import org.openjdk.jmh.results.*;
import java.util.Arrays;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.TimeUnit;
public class HotspotRuntimeProfiler extends AbstractHotspotProfiler {
public HotspotRuntimeProfiler() throws ProfilerException {
super("HotspotRuntimeMBean", "getInternalRuntimeCounters");
}
@Override
public String getDescription() {
return "HotSpot (tm) runtime profiling via implementation-specific MBeans";
}
@Override
public Collection<? extends Result> afterIteration(BenchmarkParams benchmarkParams, IterationParams iterationParams, IterationResult result) {
Map<String, Long> current = counters().getCurrent();
return Arrays.asList(
new ScalarResult(Defaults.PREFIX + "rt.sync.fatMonitors",
current.get("sun.rt._sync_MonExtant"),
"monitors", AggregationPolicy.MAX),
new ScalarResult(Defaults.PREFIX + "rt.sync.monitorInflations",
current.get("sun.rt._sync_Inflations"),
"monitors", AggregationPolicy.MAX),
new ScalarResult(Defaults.PREFIX + "rt.sync.monitorDeflations",
current.get("sun.rt._sync_Deflations"),
"monitors", AggregationPolicy.MAX),
new ScalarResult(Defaults.PREFIX + "rt.sync.contendedLockAttempts",
current.get("sun.rt._sync_ContendedLockAttempts"),
"locks", AggregationPolicy.MAX),
new ScalarResult(Defaults.PREFIX + "rt.sync.parks",
current.get("sun.rt._sync_Parks"),
"counts", AggregationPolicy.MAX),
new ScalarResult(Defaults.PREFIX + "rt.sync.notifications",
current.get("sun.rt._sync_Notifications"),
"counts", AggregationPolicy.MAX),
new ScalarResult(Defaults.PREFIX + "rt.sync.futileWakeups",
current.get("sun.rt._sync_FutileWakeups"),
"counts", AggregationPolicy.MAX),
new ScalarResult(Defaults.PREFIX + "rt.safepoints",
current.get("sun.rt.safepoints"),
"counts", AggregationPolicy.MAX),
new ScalarResult(Defaults.PREFIX + "rt.safepointSyncTime",
current.get("sun.rt.safepointSyncTime") * 1d / TimeUnit.MILLISECONDS.toNanos(1),
"ms", AggregationPolicy.MAX),
new ScalarResult(Defaults.PREFIX + "rt.safepointTime",
current.get("sun.rt.safepointTime") * 1d / TimeUnit.MILLISECONDS.toNanos(1),
"ms", AggregationPolicy.MAX)
);
}
}