1 /* 2 * Copyright (c) 2014, 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 8022865 27 * @summary Tests for the -XX:CompressedClassSpaceSize command line option 28 * @library /testlibrary 29 * @modules java.base/sun.misc 30 * java.management 31 * @run main CompressedClassSpaceSize 32 */ 33 import jdk.test.lib.*; 34 35 public class CompressedClassSpaceSize { 36 37 public static void main(String[] args) throws Exception { 38 ProcessBuilder pb; 39 OutputAnalyzer output; 40 if (Platform.is64bit()) { 41 // Minimum size is 1MB 42 pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=0", 43 "-version"); 44 output = new OutputAnalyzer(pb.start()); 45 output.shouldContain("CompressedClassSpaceSize of 0 is invalid") 46 .shouldHaveExitValue(1); 47 48 // Invalid size of -1 should be handled correctly 49 pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=-1", 50 "-version"); 51 output = new OutputAnalyzer(pb.start()); 52 output.shouldContain("Improperly specified VM option 'CompressedClassSpaceSize=-1'") 53 .shouldHaveExitValue(1); 54 55 56 // Maximum size is 3GB 57 pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=4g", 58 "-version"); 59 output = new OutputAnalyzer(pb.start()); 60 output.shouldContain("CompressedClassSpaceSize of 4294967296 is invalid") 61 .shouldHaveExitValue(1); 62 63 64 // Make sure the minimum size is set correctly and printed 65 pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions", 66 "-XX:CompressedClassSpaceSize=1m", 67 "-XX:+PrintCompressedOopsMode", 68 "-version"); 69 output = new OutputAnalyzer(pb.start()); 70 output.shouldContain("Compressed class space size: 1048576") 71 .shouldHaveExitValue(0); 72 73 74 // Make sure the maximum size is set correctly and printed 75 pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions", 76 "-XX:CompressedClassSpaceSize=3g", 77 "-XX:+PrintCompressedOopsMode", 78 "-version"); 79 output = new OutputAnalyzer(pb.start()); 80 output.shouldContain("Compressed class space size: 3221225472") 81 .shouldHaveExitValue(0); 82 83 84 pb = ProcessTools.createJavaProcessBuilder("-XX:-UseCompressedOops", 85 "-XX:CompressedClassSpaceSize=1m", 86 "-version"); 87 output = new OutputAnalyzer(pb.start()); 88 output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used") 89 .shouldHaveExitValue(0); 90 91 92 pb = ProcessTools.createJavaProcessBuilder("-XX:-UseCompressedClassPointers", 93 "-XX:CompressedClassSpaceSize=1m", 94 "-version"); 95 output = new OutputAnalyzer(pb.start()); 96 output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used") 97 .shouldHaveExitValue(0); 98 } else { 99 // 32bit platforms doesn't have compressed oops 100 pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=1m", 101 "-version"); 102 output = new OutputAnalyzer(pb.start()); 103 output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used") 104 .shouldHaveExitValue(0); 105 } 106 } 107 }