1 /* 2 * Copyright (c) 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 package gc.g1.plab.lib; 24 25 import java.util.ArrayList; 26 import java.util.Arrays; 27 import java.util.Collections; 28 import java.util.List; 29 import jdk.test.lib.Utils; 30 31 /** 32 * Utilities for PLAB testing. 33 */ 34 public class PLABUtils { 35 36 /** 37 * PLAB tests default options list 38 */ 39 private final static String[] GC_TUNE_OPTIONS = { 40 "-XX:+UseG1GC", 41 "-XX:G1HeapRegionSize=1m", 42 "-XX:OldSize=64m", 43 "-XX:-UseAdaptiveSizePolicy", 44 "-XX:-UseTLAB", 45 "-XX:SurvivorRatio=1" 46 }; 47 48 /** 49 * GC logging options list. 50 */ 51 private final static String G1_PLAB_LOGGING_OPTIONS[] = { 52 "-Xlog:gc=debug,gc+plab=debug" 53 }; 54 55 /** 56 * List of options required to use WhiteBox. 57 */ 58 private final static String WB_DIAGNOSTIC_OPTIONS[] = { 59 "-Xbootclasspath/a:.", 60 "-XX:+UnlockDiagnosticVMOptions", 61 "-XX:+WhiteBoxAPI" 62 }; 63 64 /** 65 * Prepares options for testing. 66 * 67 * @param options - additional options for testing 68 * @return List of options 69 */ 70 public static List<String> prepareOptions(List<String> options) { 71 if (options == null) { 72 throw new IllegalArgumentException("Options cannot be null"); 73 } 74 List<String> executionOtions = new ArrayList<>( 75 Arrays.asList(Utils.getTestJavaOpts()) 76 ); 77 Collections.addAll(executionOtions, WB_DIAGNOSTIC_OPTIONS); 78 Collections.addAll(executionOtions, G1_PLAB_LOGGING_OPTIONS); 79 Collections.addAll(executionOtions, GC_TUNE_OPTIONS); 80 executionOtions.addAll(options); 81 return executionOtions; 82 } 83 }