1 /* 2 * Copyright (c) 2013, 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 24 import jdk.test.lib.Asserts; 25 import jdk.test.lib.process.ProcessTools; 26 import jdk.test.lib.process.OutputAnalyzer; 27 28 /* 29 * @test TestMetaspaceSizeFlags 30 * @key gc 31 * @bug 8024650 32 * @summary Test that metaspace size flags can be set correctly 33 * @library /test/lib 34 * @modules java.base/jdk.internal.misc 35 * java.management 36 */ 37 public class TestMetaspaceSizeFlags { 38 public static final long K = 1024L; 39 public static final long M = 1024L * K; 40 41 // HotSpot uses a number of different values to align memory size flags. 42 // This is currently the largest alignment (unless huge large pages are used). 43 public static final long MAX_ALIGNMENT = 32 * M; 44 45 public static void main(String [] args) throws Exception { 46 testMaxMetaspaceSizeEQMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT); 47 // 8024650: MaxMetaspaceSize was adjusted instead of MetaspaceSize. 48 testMaxMetaspaceSizeLTMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT * 2); 49 testMaxMetaspaceSizeGTMetaspaceSize(MAX_ALIGNMENT * 2, MAX_ALIGNMENT); 50 } 51 52 private static void testMaxMetaspaceSizeEQMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { 53 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); 54 Asserts.assertEQ(maxMetaspaceSize, metaspaceSize); 55 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); 56 Asserts.assertEQ(mf.metaspaceSize, metaspaceSize); 57 } 58 59 private static void testMaxMetaspaceSizeLTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { 60 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); 61 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); 62 Asserts.assertEQ(mf.metaspaceSize, maxMetaspaceSize); 63 } 64 65 private static void testMaxMetaspaceSizeGTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { 66 MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); 67 Asserts.assertGT(maxMetaspaceSize, metaspaceSize); 68 Asserts.assertGT(mf.maxMetaspaceSize, mf.metaspaceSize); 69 Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); 70 Asserts.assertEQ(mf.metaspaceSize, metaspaceSize); 71 } 72 73 private static MetaspaceFlags runAndGetValue(long maxMetaspaceSize, long metaspaceSize) throws Exception { 74 OutputAnalyzer output = run(maxMetaspaceSize, metaspaceSize); 75 output.shouldNotMatch("Error occurred during initialization of VM\n.*"); 76 77 String stringMaxMetaspaceSize = output.firstMatch(".* MaxMetaspaceSize .* = (\\d+).*", 1); 78 String stringMetaspaceSize = output.firstMatch(".* MetaspaceSize .* = (\\d+).*", 1); 79 80 return new MetaspaceFlags(Long.parseLong(stringMaxMetaspaceSize), 81 Long.parseLong(stringMetaspaceSize)); 82 } 83 84 private static OutputAnalyzer run(long maxMetaspaceSize, long metaspaceSize) throws Exception { 85 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 86 "-XX:MaxMetaspaceSize=" + maxMetaspaceSize, 87 "-XX:MetaspaceSize=" + metaspaceSize, 88 "-XX:-UseLargePages", // Prevent us from using 2GB large pages on solaris + sparc. 89 "-XX:+PrintFlagsFinal", 90 "-version"); 91 return new OutputAnalyzer(pb.start()); 92 } 93 94 private static class MetaspaceFlags { 95 public long maxMetaspaceSize; 96 public long metaspaceSize; 97 public MetaspaceFlags(long maxMetaspaceSize, long metaspaceSize) { 98 this.maxMetaspaceSize = maxMetaspaceSize; 99 this.metaspaceSize = metaspaceSize; 100 } 101 } 102 }