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 box cache consistency. 29 // 30 // Takes two arguments: 31 // 0: the expected maximum value expected to be archived 32 // 1: if the values are expected to be retrieved from the archive or not 33 // (only applies to IntegerCache; other caches should always be mapped 34 // from archive) 35 // 36 public class CheckIntegerCacheApp { 37 static WhiteBox wb; 38 39 public static void main(String[] args) throws Exception { 40 wb = WhiteBox.getWhiteBox(); 41 42 if (!wb.areOpenArchiveHeapObjectsMapped()) { 43 System.out.println("This may happen during normal operation. Test Skipped."); 44 return; 45 } 46 47 if (args.length != 2) { 48 throw new RuntimeException( 49 "FAILED. Incorrect argument length: " + args.length); 50 } 51 52 boolean archivedExpected = Boolean.parseBoolean(args[1]); 53 54 // Base JLS compliance check 55 for (int i = -128; i <= 127; i++) { 56 if (Integer.valueOf(i) != Integer.valueOf(i)) { 57 throw new RuntimeException( 58 "FAILED. All values in range [-128, 127] should be interned in cache: " + i); 59 } 60 if (Byte.valueOf((byte)i) != Byte.valueOf((byte)i)) { 61 throw new RuntimeException( 62 "FAILED. All Byte values in range [-128, 127] should be interned in cache: " + (byte)i); 63 } 64 if (Short.valueOf((short)i) != Short.valueOf((short)i)) { 65 throw new RuntimeException( 66 "FAILED. All Short values in range [-128, 127] should be interned in cache: " + (byte)i); 67 } 68 if (Long.valueOf(i) != Long.valueOf(i)) { 69 throw new RuntimeException( 70 "FAILED. All Long values in range [-128, 127] should be interned in cache: " + i); 71 } 72 checkArchivedAsExpected(archivedExpected, Integer.valueOf(i)); 73 checkArchivedAsExpected(true, Byte.valueOf((byte)i)); 74 checkArchivedAsExpected(true, Short.valueOf((short)i)); 75 checkArchivedAsExpected(true, Long.valueOf(i)); 76 77 // Character cache only values 0 through 127 78 if (i >= 0) { 79 if (Character.valueOf((char)i) != Character.valueOf((char)i)) { 80 throw new RuntimeException( 81 "FAILED. All Character values in range [0, 127] should be interned in cache: " + i); 82 } 83 checkArchivedAsExpected(true, Character.valueOf((char)i)); 84 } 85 } 86 87 int high = Integer.parseInt(args[0]); 88 if (Integer.valueOf(high) != Integer.valueOf(high)) { 89 throw new RuntimeException( 90 "FAILED. Value expected to be retrieved from cache: " + high); 91 } 92 checkArchivedAsExpected(archivedExpected, Integer.valueOf(high)); 93 94 if (Integer.valueOf(high + 1) == Integer.valueOf(high + 1)) { 95 throw new RuntimeException( 96 "FAILED. Value not expected to be retrieved from cache: " + high); 97 } 98 checkArchivedAsExpected(false, Integer.valueOf(high + 1)); 99 checkArchivedAsExpected(false, Short.valueOf((short)128)); 100 checkArchivedAsExpected(false, Long.valueOf(128)); 101 checkArchivedAsExpected(false, Character.valueOf((char)128)); 102 } 103 104 private static void checkArchivedAsExpected(boolean archivedExpected, Object value) { 105 if (archivedExpected) { 106 if (!wb.isShared(value)) { 107 throw new RuntimeException( 108 "FAILED. Value expected to be archived: " + value + 109 " of type " + value.getClass().getName()); 110 } 111 } else { 112 if (wb.isShared(value)) { 113 throw new RuntimeException( 114 "FAILED. Value not expected to be archived: " + value + 115 " of type " + value.getClass().getName()); 116 } 117 } 118 } 119 }