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/*
* Copyright (C) 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package benchmarks.regression;
import com.google.caliper.Param;
import com.google.caliper.Runner;
import com.google.caliper.SimpleBenchmark;
import java.lang.reflect.*;
public class ReflectionBenchmark extends SimpleBenchmark {
public void timeObject_getClass(int reps) throws Exception {
C c = new C();
for (int rep = 0; rep < reps; ++rep) {
c.getClass();
}
}
public void timeClass_getField(int reps) throws Exception {
Class<?> klass = C.class;
for (int rep = 0; rep < reps; ++rep) {
klass.getField("f");
}
}
public void timeClass_getDeclaredField(int reps) throws Exception {
Class<?> klass = C.class;
for (int rep = 0; rep < reps; ++rep) {
klass.getDeclaredField("f");
}
}
public void timeClass_getConstructor(int reps) throws Exception {
Class<?> klass = C.class;
for (int rep = 0; rep < reps; ++rep) {
klass.getConstructor();
}
}
public void timeClass_newInstance(int reps) throws Exception {
Class<?> klass = C.class;
Constructor constructor = klass.getConstructor();
for (int rep = 0; rep < reps; ++rep) {
constructor.newInstance();
}
}
public void timeClass_getMethod(int reps) throws Exception {
Class<?> klass = C.class;
for (int rep = 0; rep < reps; ++rep) {
klass.getMethod("m");
}
}
public void timeClass_getDeclaredMethod(int reps) throws Exception {
Class<?> klass = C.class;
for (int rep = 0; rep < reps; ++rep) {
klass.getDeclaredMethod("m");
}
}
public void timeField_setInt(int reps) throws Exception {
Class<?> klass = C.class;
Field f = klass.getDeclaredField("f");
C instance = new C();
for (int rep = 0; rep < reps; ++rep) {
f.setInt(instance, 1);
}
}
public void timeField_getInt(int reps) throws Exception {
Class<?> klass = C.class;
Field f = klass.getDeclaredField("f");
C instance = new C();
for (int rep = 0; rep < reps; ++rep) {
f.getInt(instance);
}
}
public void timeMethod_invokeV(int reps) throws Exception {
Class<?> klass = C.class;
Method m = klass.getDeclaredMethod("m");
C instance = new C();
for (int rep = 0; rep < reps; ++rep) {
m.invoke(instance);
}
}
public void timeMethod_invokeStaticV(int reps) throws Exception {
Class<?> klass = C.class;
Method m = klass.getDeclaredMethod("sm");
for (int rep = 0; rep < reps; ++rep) {
m.invoke(null);
}
}
public void timeMethod_invokeI(int reps) throws Exception {
Class<?> klass = C.class;
Method m = klass.getDeclaredMethod("setField", int.class);
C instance = new C();
for (int rep = 0; rep < reps; ++rep) {
m.invoke(instance, 1);
}
}
public void timeMethod_invokePreBoxedI(int reps) throws Exception {
Class<?> klass = C.class;
Method m = klass.getDeclaredMethod("setField", int.class);
C instance = new C();
Integer one = Integer.valueOf(1);
for (int rep = 0; rep < reps; ++rep) {
m.invoke(instance, one);
}
}
public void timeMethod_invokeStaticI(int reps) throws Exception {
Class<?> klass = C.class;
Method m = klass.getDeclaredMethod("setStaticField", int.class);
for (int rep = 0; rep < reps; ++rep) {
m.invoke(null, 1);
}
}
public void timeMethod_invokeStaticPreBoxedI(int reps) throws Exception {
Class<?> klass = C.class;
Method m = klass.getDeclaredMethod("setStaticField", int.class);
Integer one = Integer.valueOf(1);
for (int rep = 0; rep < reps; ++rep) {
m.invoke(null, one);
}
}
public void timeRegularMethodInvocation(int reps) throws Exception {
C instance = new C();
for (int rep = 0; rep < reps; ++rep) {
instance.setField(1);
}
}
public void timeRegularConstructor(int reps) throws Exception {
for (int rep = 0; rep < reps; ++rep) {
new C();
}
}
public static class C {
public static int sf = 0;
public int f = 0;
public C() {
// A non-empty constructor so we don't get optimized away.
f = 1;
}
public void m() {
}
public static void sm() {
}
public void setField(int value) {
f = value;
}
public static void setStaticField(int value) {
sf = value;
}
}
}
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