1 /* 2 * Copyright (C) 2014 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 java.util.Vector; 18 19 public class Main { 20 static char [][] holder; 21 22 static class ArrayMemEater { 23 static boolean sawOome; 24 25 static void blowup(char[][] holder) { 26 try { 27 for (int i = 0; i < holder.length; ++i) { 28 holder[i] = new char[1024 * 1024]; 29 } 30 } catch (OutOfMemoryError oome) { 31 ArrayMemEater.sawOome = true; 32 } 33 } 34 } 35 36 static class InstanceFinalizerMemEater { 37 public void finalize() {} 38 } 39 40 static boolean triggerArrayOOM(char[][] holder) { 41 ArrayMemEater.blowup(holder); 42 return ArrayMemEater.sawOome; 43 } 44 45 static boolean triggerInstanceFinalizerOOM() { 46 boolean sawOome = false; 47 try { 48 Vector v = new Vector(); 49 while (true) { 50 v.add(new InstanceFinalizerMemEater()); 51 } 52 } catch (OutOfMemoryError e) { 53 sawOome = true; 54 } 55 return sawOome; 56 } 57 58 public static void main(String[] args) { 59 // Keep holder alive to make instance OOM happen faster. 60 holder = new char[128 * 1024][]; 61 if (!triggerArrayOOM(holder)) { 62 // The test failed here. To avoid potential OOME during println, 63 // make holder unreachable. 64 holder = null; 65 System.out.println("NEW_ARRAY did not throw OOME"); 66 } 67 68 if (!triggerInstanceFinalizerOOM()) { 69 // The test failed here. To avoid potential OOME during println, 70 // make holder unreachable. 71 holder = null; 72 System.out.println("NEW_INSTANCE (finalize) did not throw OOME"); 73 } 74 75 // Make holder unreachable here so that the Sentinel 76 // allocation in runFinalization() won't fail. 77 holder = null; 78 System.runFinalization(); 79 } 80 } 81
