1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 import dalvik.system.VMRuntime;
18 
19 public class Main {
main(String[] args)20   public static void main(String[] args) {
21     // Call our optimization API, we used to have a bug in the RegionSpace on large
22     // objects allocated through it.
23     Object[] o = (Object[]) VMRuntime.getRuntime().newUnpaddedArray(Object.class, 70000);
24 
25     // Make the test run for 30 seconds to be less dependent on GC heuristics.
26     long time = System.currentTimeMillis();
27     int i = 1;
28     do {
29       allocateIntArray(i);
30       for (int j = 0; j < o.length; j++) {
31         if (o[j] != null) {
32           // Just print, not throw, to get into "interesting" issues (eg the first
33           // element that will not be null is the class of the object, the second is
34           // actually the first element of the int array).
35           System.out.println("Unexpected value: " + o[j]);
36         }
37       }
38       if (i < 100000) {
39         i++;
40       } else {
41         i = 0;
42       }
43     } while (System.currentTimeMillis() - time < 30000);
44   }
45 
allocateIntArray(int i)46   static void allocateIntArray(int i) {
47     int[] intArray = new int[i];
48     for (int j = 0; j < intArray.length; j++) {
49       intArray[j] = 1;
50     }
51   }
52 }
53