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