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