1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2018, Google and/or its affiliates. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 */ 24 25 import java.io.File; 26 import java.net.URL; 27 import java.net.URLClassLoader; 28 import java.util.List; 29 import java.util.function.Predicate; 30 import java.util.regex.Pattern; 31 import java.util.regex.Matcher; 32 33 import jdk.test.lib.Asserts; 34 import jdk.test.lib.process.OutputAnalyzer; 35 import jdk.test.lib.process.ProcessTools; 36 import sun.hotspot.WhiteBox; 37 38 /* 39 * @test TestMetaSpaceLog 40 * @bug 8211123 41 * @summary Ensure that the Metaspace is updated in the log 42 * @requires vm.gc=="null" 43 * @key gc 44 * @library /test/lib 45 * @modules java.base/jdk.internal.misc 46 * java.management 47 * 48 * @compile TestMetaSpaceLog.java 49 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 50 * @run main TestMetaSpaceLog 51 */ 52 53 public class TestMetaSpaceLog { 54 private static Pattern metaSpaceRegexp; 55 56 static { 57 // Do this once here. 58 metaSpaceRegexp = Pattern.compile(".*Metaspace: ([0-9]+).*->([0-9]+).*"); 59 } 60 61 public static void main(String[] args) throws Exception { 62 testMetaSpaceUpdate("UseParallelGC"); 63 testMetaSpaceUpdate("UseG1GC"); 64 testMetaSpaceUpdate("UseConcMarkSweepGC"); 65 testMetaSpaceUpdate("UseSerialGC"); 66 } 67 68 private static void verifyContainsMetaSpaceUpdate(OutputAnalyzer output) { 69 Predicate<String> collectedMetaSpace = line -> check(line); 70 71 // At least one metaspace line from GC should show GC being collected. 72 boolean foundCollectedMetaSpace = output.asLines().stream() 73 .filter(s -> s.contains("[gc,metaspace")) 74 .anyMatch(TestMetaSpaceLog::check); 75 Asserts.assertTrue(foundCollectedMetaSpace); 76 } 77 78 private static boolean check(String line) { 79 Matcher m = metaSpaceRegexp.matcher(line); 80 Asserts.assertTrue(m.matches(), "Unexpected line for metaspace logging: " + line); 81 long before = Long.parseLong(m.group(1)); 82 long after = Long.parseLong(m.group(2)); 83 return before > after; 84 } 85 86 private static void testMetaSpaceUpdate(String gcFlag) throws Exception { 87 // Propagate test.src for the jar file. 88 String testSrc= "-Dtest.src=" + System.getProperty("test.src", "."); 89 90 System.err.println("Testing with GC Flag: " + gcFlag); 91 ProcessBuilder pb = 92 ProcessTools.createJavaProcessBuilder( 93 "-XX:+" + gcFlag, 94 "-Xlog:gc*", 95 "-Xbootclasspath/a:.", 96 "-XX:+UnlockDiagnosticVMOptions", 97 "-XX:+WhiteBoxAPI", 98 "-Xmx1000M", 99 "-Xms1000M", 100 testSrc, StressMetaSpace.class.getName()); 101 102 OutputAnalyzer output = null; 103 try { 104 output = new OutputAnalyzer(pb.start()); 105 verifyContainsMetaSpaceUpdate(output); 106 } catch (Exception e) { 107 // For error diagnosis: print and throw. 108 e.printStackTrace(); 109 output.reportDiagnosticSummary(); 110 throw e; 111 } 112 } 113 114 static class StressMetaSpace { 115 private static URL[] urls = new URL[1]; 116 117 static { 118 try { 119 File jarFile = new File(System.getProperty("test.src") + "/testcases.jar"); 120 urls[0] = jarFile.toURI().toURL(); 121 } catch (Exception e) { 122 e.printStackTrace(); 123 } 124 } 125 126 public static void main(String args[]) { 127 WhiteBox wb = WhiteBox.getWhiteBox(); 128 for(int i = 0; i < 10000; i++) { 129 loadClass(wb); 130 } 131 wb.fullGC(); 132 } 133 134 public static void loadClass(WhiteBox wb) { 135 try { 136 URLClassLoader ucl = new URLClassLoader(urls); 137 Class.forName("case00", false, ucl); 138 } catch (Exception e) { 139 e.printStackTrace(); 140 } 141 } 142 } 143 }