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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
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*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.openjdk.bench.java.net;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
import java.lang.reflect.Method;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.concurrent.TimeUnit;
/**
* Assess time to perform native NetworkInterface lookups; uses
* reflection to access both package-private isBoundInetAddress and
* public getByInetAddress (to get comparable numbers)
*/
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.SECONDS)
@State(Scope.Thread)
@Fork(2)
@Warmup(iterations = 5, time = 2)
@Measurement(iterations = 10, time = 2)
public class NetworkInterfaceLookup {
static final InetAddress address = InetAddress.getLoopbackAddress();
static final Method isBoundInetAddress_method;
static final Method getByInetAddress_method;
static {
Method isBound = null;
Method getByInet = null;
try {
isBound = NetworkInterface.class.getDeclaredMethod("isBoundInetAddress", InetAddress.class);
isBound.setAccessible(true);
} catch (Exception e) {
System.out.println("NetworkInterface.isBoundInetAddress not found");
}
try {
getByInet = NetworkInterface.class.getDeclaredMethod("getByInetAddress", InetAddress.class);
} catch (Exception e) {
System.out.println("NetworkInterface.getByInetAddress not found");
}
isBoundInetAddress_method = isBound;
getByInetAddress_method = getByInet;
}
@Benchmark
public boolean bound() throws Exception {
return (boolean)isBoundInetAddress_method.invoke(null, address);
}
@Benchmark
public NetworkInterface getByInetAddress() throws Exception {
return (NetworkInterface)getByInetAddress_method.invoke(null, address);
}
}