JPSUtils.java

package datadog.trace.util;

import de.thetaphi.forbiddenapis.SuppressForbidden;
import java.lang.reflect.Method;
import java.util.Set;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public final class JPSUtils {
  private static final Logger log = LoggerFactory.getLogger(JPSUtils.class);

  @SuppressForbidden
  public static Set<String> getVMPids() {
    try {
      Class<?> monitoredHostClass = Class.forName("sun.jvmstat.monitor.MonitoredHost");
      Method getMonitoredHostMethod =
          monitoredHostClass.getDeclaredMethod("getMonitoredHost", String.class);
      Object vmHost = getMonitoredHostMethod.invoke(null, "localhost");
      return (Set<String>) monitoredHostClass.getDeclaredMethod("activeVms").invoke(vmHost);
    } catch (Exception e) {
      log.debug("Failed to invoke jvmstat with exception ", e);
      return null;
    }
  }
}