/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import dalvik.system.VMRuntime;
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import java.lang.ref.WeakReference;
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import java.lang.reflect.Method;
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public class Main {
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public static void main(String[] args) {
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try {
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// Allocate a large object.
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byte[] arr = new byte[128 * 1024];
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// Allocate a non movable object.
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byte[] arr2 = (byte[])VMRuntime.getRuntime().newNonMovableArray(Byte.TYPE, 200);
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// Put the array in a weak reference so that IsMarked is called by the GC.
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WeakReference weakRef = new WeakReference(arr2);
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// Do a GC.
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Runtime.getRuntime().gc();
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arr[0] = 1;
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arr2[0] = 1;
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System.out.println(arr.length + " " + arr2.length + " " + (weakRef.get() != null));
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} catch (Exception e) {
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System.out.println(e);
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}
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}
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}
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