1 /* 2 * Copyright (c) 2014, 2016, 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 * @requires vm.opt.final.UseCompressedOops 29 * @library /test/lib 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @run main CompressedClassSpaceSize 33 */ 34 import jdk.test.lib.Platform; 35 import jdk.test.lib.process.ProcessTools; 36 import jdk.test.lib.process.OutputAnalyzer; 37 38 public class CompressedClassSpaceSize { 39 40 public static void main(String[] args) throws Exception { 41 ProcessBuilder pb; 42 OutputAnalyzer output; 43 if (Platform.is64bit()) { 44 // Minimum size is 1MB 45 pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=0", 46 "-version"); 47 output = new OutputAnalyzer(pb.start()); 48 output.shouldContain("outside the allowed range") 49 .shouldHaveExitValue(1); 50 51 // Invalid size of -1 should be handled correctly 52 pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=-1", 53 "-version"); 54 output = new OutputAnalyzer(pb.start()); 55 output.shouldContain("Improperly specified VM option 'CompressedClassSpaceSize=-1'") 56 .shouldHaveExitValue(1); 57 58 59 // Maximum size is 3GB 60 pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=4g", 61 "-version"); 62 output = new OutputAnalyzer(pb.start()); 63 output.shouldContain("outside the allowed range") 64 .shouldHaveExitValue(1); 65 66 67 // Make sure the minimum size is set correctly and printed 68 pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions", 69 "-XX:CompressedClassSpaceSize=1m", 70 "-Xlog:gc+metaspace=trace", 71 "-version"); 72 output = new OutputAnalyzer(pb.start()); 73 output.shouldContain("Compressed class space size: 1048576") 74 .shouldHaveExitValue(0); 75 76 77 // Make sure the maximum size is set correctly and printed 78 pb = ProcessTools.createJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions", 79 "-XX:CompressedClassSpaceSize=3g", 80 "-Xlog:gc+metaspace=trace", 81 "-version"); 82 output = new OutputAnalyzer(pb.start()); 83 output.shouldContain("Compressed class space size: 3221225472") 84 .shouldHaveExitValue(0); 85 86 87 pb = ProcessTools.createJavaProcessBuilder("-XX:-UseCompressedOops", 88 "-XX:CompressedClassSpaceSize=1m", 89 "-version"); 90 output = new OutputAnalyzer(pb.start()); 91 output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used") 92 .shouldHaveExitValue(0); 93 94 95 pb = ProcessTools.createJavaProcessBuilder("-XX:-UseCompressedClassPointers", 96 "-XX:CompressedClassSpaceSize=1m", 97 "-version"); 98 output = new OutputAnalyzer(pb.start()); 99 output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used") 100 .shouldHaveExitValue(0); 101 } else { 102 // 32bit platforms doesn't have compressed oops 103 pb = ProcessTools.createJavaProcessBuilder("-XX:CompressedClassSpaceSize=1m", 104 "-version"); 105 output = new OutputAnalyzer(pb.start()); 106 output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used") 107 .shouldHaveExitValue(0); 108 } 109 } 110 }