1 /* 2 * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates. 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 /** 25 * @test TestByteArrays 26 * @summary Epsilon is able to allocate arrays, and does not corrupt their state 27 * 28 * @run main/othervm -Xmx1g -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 29 * @run main/othervm -Xmx1g -Xint -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 30 * @run main/othervm -Xmx1g -Xbatch -Xcomp -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 31 * @run main/othervm -Xmx1g -Xbatch -Xcomp -XX:TieredStopAtLevel=1 -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 32 * @run main/othervm -Xmx1g -Xbatch -Xcomp -XX:TieredStopAtLevel=4 -XX:+UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 33 * 34 * @run main/othervm -Xmx1g -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 35 * @run main/othervm -Xmx1g -Xint -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 36 * @run main/othervm -Xmx1g -Xbatch -Xcomp -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 37 * @run main/othervm -Xmx1g -Xbatch -Xcomp -XX:TieredStopAtLevel=1 -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 38 * @run main/othervm -Xmx1g -Xbatch -Xcomp -XX:TieredStopAtLevel=4 -XX:-UseTLAB -XX:+UnlockExperimentalVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+UseEpsilonGC TestByteArrays 39 */ 40 41 import java.util.Random; 42 43 public class TestByteArrays extends AbstractEpsilonTest { 44 45 static long SEED = Long.getLong("seed", System.nanoTime()); 46 static int COUNT = Integer.getInteger("count", 3000); // ~500 MB allocation 47 48 static byte[][] arr; 49 50 public static void main(String[] args) throws Exception { 51 if (!isEpsilonEnabled()) return; 52 53 Random r = new Random(SEED); 54 55 arr = new byte[COUNT * 100][]; 56 for (int c = 0; c < COUNT; c++) { 57 arr[c] = new byte[c * 100]; 58 for (int v = 0; v < c; v++) { 59 arr[c][v] = (byte)(r.nextInt(255) & 0xFF); 60 } 61 } 62 63 r = new Random(SEED); 64 for (int c = 0; c < COUNT; c++) { 65 byte[] b = arr[c]; 66 if (b.length != (c * 100)) { 67 throw new IllegalStateException("Failure: length = " + b.length + ", need = " + (c*100)); 68 } 69 for (int v = 0; v < c; v++) { 70 byte actual = b[v]; 71 byte expected = (byte)(r.nextInt(255) & 0xFF); 72 if (actual != expected) { 73 throw new IllegalStateException("Failure: expected = " + expected + ", actual = " + actual); 74 } 75 } 76 } 77 } 78 }