1 /* 2 * Copyright (c) 2013, 2020, 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 * @bug 8024650 33 * @summary Test that metaspace size flags can be set correctly 34 * @library /test/lib 35 * @modules java.base/jdk.internal.misc 36 * java.management 37 * @run driver gc.metaspace.TestMetaspaceSizeFlags 38 */ 39 public class TestMetaspaceSizeFlags { 40 public static final long K = 1024L; 41 public static final long M = 1024L * K; 42 43 // HotSpot uses a number of different values to align memory size flags. 44 // This is currently the largest alignment (unless huge large pages are used). 45 public static final long MAX_ALIGNMENT = 32 * M; 46 main(String [] args)47 public static void main(String [] args) throws Exception { 48 testMaxMetaspaceSizeEQMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT); 49 // 8024650: MaxMetaspaceSize was adjusted instead of MetaspaceSize. 50 testMaxMetaspaceSizeLTMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT * 2); 51 testMaxMetaspaceSizeGTMetaspaceSize(MAX_ALIGNMENT * 2, MAX_ALIGNMENT); 52 } 53 testMaxMetaspaceSizeEQMetaspaceSize(long maxMetaspaceSize, long metaspaceSize)54 private static void testMaxMetaspaceSizeEQMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { 55 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); 56 Asserts.assertEQ(maxMetaspaceSize, metaspaceSize); 57 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); 58 Asserts.assertEQ(mf.metaspaceSize, metaspaceSize); 59 } 60 testMaxMetaspaceSizeLTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize)61 private static void testMaxMetaspaceSizeLTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { 62 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); 63 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); 64 Asserts.assertEQ(mf.metaspaceSize, maxMetaspaceSize); 65 } 66 testMaxMetaspaceSizeGTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize)67 private static void testMaxMetaspaceSizeGTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { 68 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); 69 Asserts.assertGT(maxMetaspaceSize, metaspaceSize); 70 Asserts.assertGT(mf.maxMetaspaceSize, mf.metaspaceSize); 71 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); 72 Asserts.assertEQ(mf.metaspaceSize, metaspaceSize); 73 } 74 runAndGetValue(long maxMetaspaceSize, long metaspaceSize)75 private static MetaspaceFlags runAndGetValue(long maxMetaspaceSize, long metaspaceSize) throws Exception { 76 OutputAnalyzer output = run(maxMetaspaceSize, metaspaceSize); 77 output.shouldNotMatch("Error occurred during initialization of VM\n.*"); 78 79 String stringMaxMetaspaceSize = output.firstMatch(".* MaxMetaspaceSize .* = (\\d+).*", 1); 80 String stringMetaspaceSize = output.firstMatch(".* MetaspaceSize .* = (\\d+).*", 1); 81 82 return new MetaspaceFlags(Long.parseLong(stringMaxMetaspaceSize), 83 Long.parseLong(stringMetaspaceSize)); 84 } 85 run(long maxMetaspaceSize, long metaspaceSize)86 private static OutputAnalyzer run(long maxMetaspaceSize, long metaspaceSize) throws Exception { 87 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 88 "-XX:MaxMetaspaceSize=" + maxMetaspaceSize, 89 "-XX:MetaspaceSize=" + metaspaceSize, 90 "-XX:-UseLargePages", // Prevent us from using 2GB large pages on solaris + sparc. 91 "-XX:+PrintFlagsFinal", 92 "-version"); 93 return new OutputAnalyzer(pb.start()); 94 } 95 96 private static class MetaspaceFlags { 97 public long maxMetaspaceSize; 98 public long metaspaceSize; MetaspaceFlags(long maxMetaspaceSize, long metaspaceSize)99 public MetaspaceFlags(long maxMetaspaceSize, long metaspaceSize) { 100 this.maxMetaspaceSize = maxMetaspaceSize; 101 this.metaspaceSize = metaspaceSize; 102 } 103 } 104 } 105