1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. 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 25 import sun.hotspot.WhiteBox; 26 27 // 28 // Help test archived integer cache consistency. 29 // 30 // Takes two arguments: 31 // 0: the expected AutoBoxCacheMax setting 32 // 1: if the values are expected to be retrieved from the archive or not 33 // 34 public class CheckIntegerCacheApp { 35 static WhiteBox wb; 36 37 public static void main(String[] args) throws Exception { 38 wb = WhiteBox.getWhiteBox(); 39 40 if (!wb.areOpenArchiveHeapObjectsMapped()) { 41 System.out.println("This may happen during normal operation. Test Skipped."); 42 return; 43 } 44 45 if (args.length != 2) { 46 throw new RuntimeException( 47 "FAILED. Incorrect argument length: " + args.length); 48 } 49 50 boolean archivedExpected = Boolean.parseBoolean(args[1]); 51 52 // Base JLS compliance check 53 for (int i = -128; i <= 127; i++) { 54 if (Integer.valueOf(i) != Integer.valueOf(i)) { 55 throw new RuntimeException( 56 "FAILED. All values in range [-128, 127] should be interned in cache: " + i); 57 } 58 checkArchivedAsExpected(archivedExpected, i); 59 } 60 61 int high = Integer.parseInt(args[0]); 62 if (Integer.valueOf(high) != Integer.valueOf(high)) { 63 throw new RuntimeException( 64 "FAILED. Value expected to be retrieved from cache: " + high); 65 } 66 checkArchivedAsExpected(archivedExpected, Integer.valueOf(high)); 67 68 if (Integer.valueOf(high + 1) == Integer.valueOf(high + 1)) { 69 throw new RuntimeException( 70 "FAILED. Value not expected to be retrieved from cache: " + high); 71 } 72 checkArchivedAsExpected(false, Integer.valueOf(high + 1)); 73 } 74 75 private static void checkArchivedAsExpected(boolean archivedExpected, Integer value) { 76 if (archivedExpected) { 77 if (!wb.isShared(Integer.valueOf(value))) { 78 throw new RuntimeException( 79 "FAILED. Value expected to be archived: " + value); 80 } 81 } else { 82 if (wb.isShared(Integer.valueOf(value))) { 83 throw new RuntimeException( 84 "FAILED. Value not expected to be archived: " + value); 85 } 86 } 87 } 88 }