1 /* 2 * Copyright (c) 2013, 2019, 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 * @requires vm.cds 27 * @bug 8005933 28 * @summary -Xshare:auto is the default when -Xshare is not specified 29 * @library /test/lib 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @run main XShareAuto 33 */ 34 35 import jdk.test.lib.Platform; 36 import jdk.test.lib.process.ProcessTools; 37 import jdk.test.lib.process.OutputAnalyzer; 38 39 public class XShareAuto { 40 public static void main(String[] args) throws Exception { 41 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 42 "-server", "-XX:+UnlockDiagnosticVMOptions", 43 "-XX:SharedArchiveFile=./XShareAuto.jsa", "-Xshare:dump", "-Xlog:cds"); 44 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 45 output.shouldContain("Loading classes to share"); 46 output.shouldHaveExitValue(0); 47 48 49 // We have 2 test cases: 50 String cases[] = { 51 "-Xshare:auto", // case [1]: -Xshare:auto is explicitly specified. 52 "-showversion" // case [2]: -Xshare:auto is not explicitly specified, 53 // but VM should still use it by default. 54 }; 55 56 for (String x : cases) { 57 pb = ProcessTools.createJavaProcessBuilder( 58 "-XX:+UnlockDiagnosticVMOptions", 59 "-XX:SharedArchiveFile=./XShareAuto.jsa", 60 "-Xlog:cds", 61 x, 62 "-version"); 63 output = new OutputAnalyzer(pb.start()); 64 String outputString = output.getOutput(); 65 66 if (!outputString.contains("Unable to map")) { 67 // sharing may not be enabled if XShareAuto.jsa cannot be mapped due to 68 // ASLR. 69 output.shouldContain("sharing"); 70 } 71 output.shouldHaveExitValue(0); 72 } 73 } 74 }