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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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.
*/
public class TypeCheckBenchmark {
public void timeCheckCastLevel1ToLevel1(int count) {
Object[] arr = arr1;
for (int i = 0; i < count; ++i) {
Level1 l1 = (Level1) arr[i & 1023];
}
}
public void timeCheckCastLevel2ToLevel1(int count) {
Object[] arr = arr2;
for (int i = 0; i < count; ++i) {
Level1 l1 = (Level1) arr[i & 1023];
}
}
public void timeCheckCastLevel3ToLevel1(int count) {
Object[] arr = arr3;
for (int i = 0; i < count; ++i) {
Level1 l1 = (Level1) arr[i & 1023];
}
}
public void timeCheckCastLevel9ToLevel1(int count) {
Object[] arr = arr9;
for (int i = 0; i < count; ++i) {
Level1 l1 = (Level1) arr[i & 1023];
}
}
public void timeCheckCastLevel9ToLevel2(int count) {
Object[] arr = arr9;
for (int i = 0; i < count; ++i) {
Level2 l2 = (Level2) arr[i & 1023];
}
}
public void timeInstanceOfLevel1ToLevel1(int count) {
int sum = 0;
Object[] arr = arr1;
for (int i = 0; i < count; ++i) {
if (arr[i & 1023] instanceof Level1) {
++sum;
}
}
result = sum;
}
public void timeInstanceOfLevel2ToLevel1(int count) {
int sum = 0;
Object[] arr = arr2;
for (int i = 0; i < count; ++i) {
if (arr[i & 1023] instanceof Level1) {
++sum;
}
}
result = sum;
}
public void timeInstanceOfLevel3ToLevel1(int count) {
int sum = 0;
Object[] arr = arr3;
for (int i = 0; i < count; ++i) {
if (arr[i & 1023] instanceof Level1) {
++sum;
}
}
result = sum;
}
public void timeInstanceOfLevel9ToLevel1(int count) {
int sum = 0;
Object[] arr = arr9;
for (int i = 0; i < count; ++i) {
if (arr[i & 1023] instanceof Level1) {
++sum;
}
}
result = sum;
}
public void timeInstanceOfLevel9ToLevel2(int count) {
int sum = 0;
Object[] arr = arr9;
for (int i = 0; i < count; ++i) {
if (arr[i & 1023] instanceof Level2) {
++sum;
}
}
result = sum;
}
public static Object[] createArray(int level) {
try {
Class<?>[] ls = {
null,
Level1.class,
Level2.class,
Level3.class,
Level4.class,
Level5.class,
Level6.class,
Level7.class,
Level8.class,
Level9.class,
};
Class<?> l = ls[level];
Object[] array = new Object[1024];
for (int i = 0; i < array.length; ++i) {
array[i] = l.newInstance();
}
return array;
} catch (Exception unexpected) {
throw new Error("Initialization failure!");
}
}
Object[] arr1 = createArray(1);
Object[] arr2 = createArray(2);
Object[] arr3 = createArray(3);
Object[] arr9 = createArray(9);
int result;
}
class Level1 { }
class Level2 extends Level1 { }
class Level3 extends Level2 { }
class Level4 extends Level3 { }
class Level5 extends Level4 { }
class Level6 extends Level5 { }
class Level7 extends Level6 { }
class Level8 extends Level7 { }
class Level9 extends Level8 { }
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