1 /* 2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package gc.epsilon; 25 26 /** 27 * @test TestObjects 28 * @key randomness 29 * @requires vm.gc.Epsilon 30 * @summary Epsilon is able to allocate objects, and does not corrupt their state 31 * @library /test/lib 32 * 33 * @run main/othervm -Xmx128m -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 34 * @run main/othervm -Xmx128m -Xint -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 35 * @run main/othervm -Xmx128m -Xbatch -Xcomp -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 36 * @run main/othervm -Xmx128m -Xbatch -Xcomp -XX:TieredStopAtLevel=1 -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 37 * @run main/othervm -Xmx128m -Xbatch -Xcomp -XX:-TieredCompilation -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 38 * 39 * @run main/othervm -Xmx128m -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 40 * @run main/othervm -Xmx128m -Xint -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 41 * @run main/othervm -Xmx128m -Xbatch -Xcomp -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 42 * @run main/othervm -Xmx128m -Xbatch -Xcomp -XX:TieredStopAtLevel=1 -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 43 * @run main/othervm -Xmx128m -Xbatch -Xcomp -XX:-TieredCompilation -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestObjects 44 */ 45 46 import java.util.Random; 47 import jdk.test.lib.Utils; 48 49 public class TestObjects { 50 static int COUNT = Integer.getInteger("count", 1_000_000); // ~24 MB allocation 51 52 static MyObject[] arr; 53 main(String[] args)54 public static void main(String[] args) throws Exception { 55 Random r = Utils.getRandomInstance(); 56 57 arr = new MyObject[COUNT]; 58 for (int c = 0; c < COUNT; c++) { 59 arr[c] = new MyObject(r.nextInt()); 60 } 61 62 r = new Random(Utils.SEED); 63 for (int c = 0; c < COUNT; c++) { 64 int expected = r.nextInt(); 65 int actual = arr[c].id(); 66 if (expected != actual) { 67 throw new IllegalStateException("Failure: expected = " + expected + ", actual = " + actual); 68 } 69 } 70 } 71 72 public static class MyObject { 73 int id; MyObject(int id)74 public MyObject(int id) { 75 this.id = id; 76 } id()77 public int id() { 78 return id; 79 } 80 } 81 } 82