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 package gc.metaspace; 25 26 import jdk.test.lib.Asserts; 27 import jdk.test.lib.process.ProcessTools; 28 import jdk.test.lib.process.OutputAnalyzer; 29 30 /* 31 * @test TestMetaspaceSizeFlags 32 * @key gc 33 * @bug 8024650 34 * @summary Test that metaspace size flags can be set correctly 35 * @library /test/lib 36 * @modules java.base/jdk.internal.misc 37 * java.management 38 * @run main gc.metaspace.TestMetaspaceSizeFlags 39 */ 40 public class TestMetaspaceSizeFlags { 41 public static final long K = 1024L; 42 public static final long M = 1024L * K; 43 44 // HotSpot uses a number of different values to align memory size flags. 45 // This is currently the largest alignment (unless huge large pages are used). 46 public static final long MAX_ALIGNMENT = 32 * M; 47 main(String [] args)48 public static void main(String [] args) throws Exception { 49 testMaxMetaspaceSizeEQMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT); 50 // 8024650: MaxMetaspaceSize was adjusted instead of MetaspaceSize. 51 testMaxMetaspaceSizeLTMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT * 2); 52 testMaxMetaspaceSizeGTMetaspaceSize(MAX_ALIGNMENT * 2, MAX_ALIGNMENT); 53 } 54 testMaxMetaspaceSizeEQMetaspaceSize(long maxMetaspaceSize, long metaspaceSize)55 private static void testMaxMetaspaceSizeEQMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { 56 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); 57 Asserts.assertEQ(maxMetaspaceSize, metaspaceSize); 58 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); 59 Asserts.assertEQ(mf.metaspaceSize, metaspaceSize); 60 } 61 testMaxMetaspaceSizeLTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize)62 private static void testMaxMetaspaceSizeLTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { 63 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); 64 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); 65 Asserts.assertEQ(mf.metaspaceSize, maxMetaspaceSize); 66 } 67 testMaxMetaspaceSizeGTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize)68 private static void testMaxMetaspaceSizeGTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { 69 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); 70 Asserts.assertGT(maxMetaspaceSize, metaspaceSize); 71 Asserts.assertGT(mf.maxMetaspaceSize, mf.metaspaceSize); 72 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); 73 Asserts.assertEQ(mf.metaspaceSize, metaspaceSize); 74 } 75 runAndGetValue(long maxMetaspaceSize, long metaspaceSize)76 private static MetaspaceFlags runAndGetValue(long maxMetaspaceSize, long metaspaceSize) throws Exception { 77 OutputAnalyzer output = run(maxMetaspaceSize, metaspaceSize); 78 output.shouldNotMatch("Error occurred during initialization of VM\n.*"); 79 80 String stringMaxMetaspaceSize = output.firstMatch(".* MaxMetaspaceSize .* = (\\d+).*", 1); 81 String stringMetaspaceSize = output.firstMatch(".* MetaspaceSize .* = (\\d+).*", 1); 82 83 return new MetaspaceFlags(Long.parseLong(stringMaxMetaspaceSize), 84 Long.parseLong(stringMetaspaceSize)); 85 } 86 run(long maxMetaspaceSize, long metaspaceSize)87 private static OutputAnalyzer run(long maxMetaspaceSize, long metaspaceSize) throws Exception { 88 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 89 "-XX:MaxMetaspaceSize=" + maxMetaspaceSize, 90 "-XX:MetaspaceSize=" + metaspaceSize, 91 "-XX:-UseLargePages", // Prevent us from using 2GB large pages on solaris + sparc. 92 "-XX:+PrintFlagsFinal", 93 "-version"); 94 return new OutputAnalyzer(pb.start()); 95 } 96 97 private static class MetaspaceFlags { 98 public long maxMetaspaceSize; 99 public long metaspaceSize; MetaspaceFlags(long maxMetaspaceSize, long metaspaceSize)100 public MetaspaceFlags(long maxMetaspaceSize, long metaspaceSize) { 101 this.maxMetaspaceSize = maxMetaspaceSize; 102 this.metaspaceSize = metaspaceSize; 103 } 104 } 105 } 106