1 /* 2 * Copyright (c) 2014, 2018, 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 8059510 27 * @summary Test SharedSymbolTableBucketSize option 28 * @requires vm.cds 29 * @library /test/lib 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 */ 33 34 import jdk.test.lib.cds.CDSTestUtils; 35 import jdk.test.lib.process.OutputAnalyzer; 36 import jtreg.SkippedException; 37 38 public class SharedSymbolTableBucketSize { 39 public static void main(String[] args) throws Exception { 40 int bucket_size = 8; 41 42 OutputAnalyzer output = 43 CDSTestUtils.createArchive("-XX:SharedSymbolTableBucketSize=" 44 + Integer.valueOf(bucket_size)); 45 CDSTestUtils.checkDump(output); 46 47 if (CDSTestUtils.isUnableToMap(output)) { 48 throw new SkippedException(CDSTestUtils.UnableToMapMsg); 49 } 50 51 String s = output.firstMatch("Average bucket size : .*"); 52 Float f = Float.parseFloat(s.substring(25)); 53 int size = Math.round(f); 54 if (size != bucket_size) { 55 throw new Exception("FAILED: incorrect bucket size " + size + 56 ", expect " + bucket_size); 57 } 58 59 // Invalid SharedSymbolTableBucketSize input 60 String input[] = {"-XX:SharedSymbolTableBucketSize=-1", 61 "-XX:SharedSymbolTableBucketSize=2.5"}; 62 for (int i = 0; i < input.length; i++) { 63 CDSTestUtils.createArchive(input[i]) 64 .shouldContain("Improperly specified VM option") 65 .shouldHaveExitValue(1); 66 } 67 } 68 }