1 /* 2 * Copyright (c) 2013, 2015, 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 * @test 26 * @bug 8024927 27 * @summary Testing address of compressed class pointer space as best as possible. 28 * @library /testlibrary 29 */ 30 31 import com.oracle.java.testlibrary.*; 32 33 public class CompressedClassPointers { 34 35 public static void smallHeapTest() throws Exception { 36 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 37 "-XX:+UnlockDiagnosticVMOptions", 38 "-XX:SharedBaseAddress=8g", 39 "-Xmx128m", 40 "-XX:+PrintCompressedOopsMode", 41 "-XX:+VerifyBeforeGC", "-version"); 42 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 43 output.shouldContain("Narrow klass base: 0x0000000000000000"); 44 output.shouldHaveExitValue(0); 45 } 46 47 public static void smallHeapTestWith3G() throws Exception { 48 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 49 "-XX:+UnlockDiagnosticVMOptions", 50 "-XX:CompressedClassSpaceSize=3g", 51 "-Xmx128m", 52 "-XX:+PrintCompressedOopsMode", 53 "-XX:+VerifyBeforeGC", "-version"); 54 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 55 output.shouldContain("Narrow klass base: 0x0000000000000000, Narrow klass shift: 3"); 56 output.shouldHaveExitValue(0); 57 } 58 59 public static void largeHeapTest() throws Exception { 60 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 61 "-XX:+UnlockDiagnosticVMOptions", 62 "-Xmx30g", 63 "-XX:+PrintCompressedOopsMode", 64 "-XX:+VerifyBeforeGC", "-version"); 65 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 66 output.shouldNotContain("Narrow klass base: 0x0000000000000000"); 67 output.shouldContain("Narrow klass shift: 0"); 68 output.shouldHaveExitValue(0); 69 } 70 71 public static void largePagesTest() throws Exception { 72 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 73 "-XX:+UnlockDiagnosticVMOptions", 74 "-Xmx128m", 75 "-XX:+UseLargePages", 76 "-XX:+PrintCompressedOopsMode", 77 "-XX:+VerifyBeforeGC", "-version"); 78 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 79 output.shouldContain("Narrow klass base:"); 80 output.shouldHaveExitValue(0); 81 } 82 83 public static void heapBaseMinAddressTest() throws Exception { 84 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 85 "-XX:HeapBaseMinAddress=1m", 86 "-XX:+UnlockDiagnosticVMOptions", 87 "-XX:+PrintCompressedOopsMode", 88 "-version"); 89 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 90 output.shouldContain("HeapBaseMinAddress must be at least"); 91 output.shouldHaveExitValue(0); 92 } 93 94 public static void sharingTest() throws Exception { 95 // Test small heaps 96 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 97 "-XX:+UnlockDiagnosticVMOptions", 98 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa", 99 "-Xmx128m", 100 "-XX:SharedBaseAddress=8g", 101 "-XX:+PrintCompressedOopsMode", 102 "-XX:+VerifyBeforeGC", 103 "-Xshare:dump"); 104 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 105 try { 106 output.shouldContain("Loading classes to share"); 107 output.shouldHaveExitValue(0); 108 109 pb = ProcessTools.createJavaProcessBuilder( 110 "-XX:+UnlockDiagnosticVMOptions", 111 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa", 112 "-Xmx128m", 113 "-XX:SharedBaseAddress=8g", 114 "-XX:+PrintCompressedOopsMode", 115 "-Xshare:on", 116 "-version"); 117 output = new OutputAnalyzer(pb.start()); 118 output.shouldContain("sharing"); 119 output.shouldHaveExitValue(0); 120 121 } catch (RuntimeException e) { 122 output.shouldContain("Unable to use shared archive"); 123 output.shouldHaveExitValue(1); 124 } 125 } 126 127 public static void main(String[] args) throws Exception { 128 if (!Platform.is64bit()) { 129 // Can't test this on 32 bit, just pass 130 System.out.println("Skipping test on 32bit"); 131 return; 132 } 133 // Solaris 10 can't mmap compressed oops space without a base 134 if (Platform.isSolaris()) { 135 String name = System.getProperty("os.version"); 136 if (name.equals("5.10")) { 137 System.out.println("Skipping test on Solaris 10"); 138 return; 139 } 140 } 141 smallHeapTest(); 142 smallHeapTestWith3G(); 143 largeHeapTest(); 144 largePagesTest(); 145 heapBaseMinAddressTest(); 146 sharingTest(); 147 } 148 }