1 /* 2 * Copyright (c) 2018, 2019, 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 package gc.logging; 26 27 import java.io.File; 28 import java.net.URL; 29 import java.net.URLClassLoader; 30 import java.util.function.Predicate; 31 import java.util.regex.Pattern; 32 import java.util.regex.Matcher; 33 34 import jdk.test.lib.Asserts; 35 import jdk.test.lib.process.OutputAnalyzer; 36 import jdk.test.lib.process.ProcessTools; 37 import sun.hotspot.WhiteBox; 38 39 /* 40 * @test TestMetaSpaceLog 41 * @bug 8211123 42 * @summary Ensure that the Metaspace is updated in the log 43 * @requires vm.gc=="null" 44 * @key gc 45 * @library /test/lib 46 * @modules java.base/jdk.internal.misc 47 * java.management 48 * 49 * @compile TestMetaSpaceLog.java 50 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 51 * @run main gc.logging.TestMetaSpaceLog 52 */ 53 54 public class TestMetaSpaceLog { 55 private static Pattern metaSpaceRegexp; 56 57 static { 58 // Do this once here. 59 metaSpaceRegexp = Pattern.compile(".*Metaspace: ([0-9]+).*->([0-9]+).*"); 60 } 61 62 public static void main(String[] args) throws Exception { 63 testMetaSpaceUpdate("UseParallelGC"); 64 testMetaSpaceUpdate("UseG1GC"); 65 testMetaSpaceUpdate("UseConcMarkSweepGC"); 66 testMetaSpaceUpdate("UseSerialGC"); 67 } 68 69 private static void verifyContainsMetaSpaceUpdate(OutputAnalyzer output) { 70 Predicate<String> collectedMetaSpace = line -> check(line); 71 72 // At least one metaspace line from GC should show GC being collected. 73 boolean foundCollectedMetaSpace = output.asLines().stream() 74 .filter(s -> s.contains("[gc,metaspace")) 75 .anyMatch(TestMetaSpaceLog::check); 76 Asserts.assertTrue(foundCollectedMetaSpace); 77 } 78 79 private static boolean check(String line) { 80 Matcher m = metaSpaceRegexp.matcher(line); 81 Asserts.assertTrue(m.matches(), "Unexpected line for metaspace logging: " + line); 82 long before = Long.parseLong(m.group(1)); 83 long after = Long.parseLong(m.group(2)); 84 return before > after; 85 } 86 87 private static void testMetaSpaceUpdate(String gcFlag) throws Exception { 88 // Propagate test.src for the jar file. 89 String testSrc= "-Dtest.src=" + System.getProperty("test.src", "."); 90 91 System.err.println("Testing with GC Flag: " + gcFlag); 92 ProcessBuilder pb = 93 ProcessTools.createJavaProcessBuilder( 94 "-XX:+" + gcFlag, 95 "-Xlog:gc*", 96 "-Xbootclasspath/a:.", 97 "-XX:+UnlockDiagnosticVMOptions", 98 "-XX:+WhiteBoxAPI", 99 "-Xmx1000M", 100 "-Xms1000M", 101 testSrc, StressMetaSpace.class.getName()); 102 103 OutputAnalyzer output = null; 104 try { 105 output = new OutputAnalyzer(pb.start()); 106 verifyContainsMetaSpaceUpdate(output); 107 } catch (Exception e) { 108 // For error diagnosis: print and throw. 109 e.printStackTrace(); 110 output.reportDiagnosticSummary(); 111 throw e; 112 } 113 } 114 115 static class StressMetaSpace { 116 private static URL[] urls = new URL[1]; 117 118 static { 119 try { 120 File jarFile = new File(System.getProperty("test.src") + "/testcases.jar"); 121 urls[0] = jarFile.toURI().toURL(); 122 } catch (Exception e) { 123 e.printStackTrace(); 124 } 125 } 126 127 public static void main(String args[]) { 128 WhiteBox wb = WhiteBox.getWhiteBox(); 129 for(int i = 0; i < 10000; i++) { 130 loadClass(wb); 131 } 132 wb.fullGC(); 133 } 134 135 public static void loadClass(WhiteBox wb) { 136 try { 137 URLClassLoader ucl = new URLClassLoader(urls); 138 Class.forName("case00", false, ucl); 139 } catch (Exception e) { 140 e.printStackTrace(); 141 } 142 } 143 } 144 }