1 /* 2 * Copyright (c) 2015, 2019, 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.arguments; 25 26 /* 27 * @test TestVerifyBeforeAndAfterGCFlags 28 * @key gc 29 * @bug 8000831 30 * @summary Runs an simple application (GarbageProducer) with various 31 combinations of -XX:{+|-}Verify{After|Before}GC flags and checks that 32 output contain or doesn't contain expected patterns 33 * @requires vm.gc != "Z" & vm.gc != "Shenandoah" 34 * @modules java.base/jdk.internal.misc 35 * @modules java.management 36 * @library /test/lib 37 * @library / 38 * @run driver gc.arguments.TestVerifyBeforeAndAfterGCFlags 39 */ 40 41 import java.util.ArrayList; 42 import java.util.Collections; 43 44 import jdk.test.lib.Utils; 45 import jdk.test.lib.process.OutputAnalyzer; 46 import jdk.test.lib.process.ProcessTools; 47 48 public class TestVerifyBeforeAndAfterGCFlags { 49 50 // VerifyBeforeGC:[Verifying threads heap tenured eden syms strs zone dict metaspace chunks hand code cache ] 51 public static final String VERIFY_BEFORE_GC_PATTERN = "Verifying Before GC"; 52 // VerifyBeforeGC: VerifyBeforeGC: VerifyBeforeGC: 53 public static final String VERIFY_BEFORE_GC_CORRUPTED_PATTERN = "VerifyBeforeGC:(?!\\[Verifying[^]]+\\])"; 54 55 // VerifyAfterGC:[Verifying threads heap tenured eden syms strs zone dict metaspace chunks hand code cache ] 56 public static final String VERIFY_AFTER_GC_PATTERN = "Verifying After GC"; 57 // VerifyAfterGC: VerifyAfterGC: VerifyAfterGC: 58 public static final String VERIFY_AFTER_GC_CORRUPTED_PATTERN = "VerifyAfterGC:(?!\\[Verifying[^]]+\\])"; 59 main(String args[])60 public static void main(String args[]) throws Exception { 61 String[] filteredOpts = Utils.getFilteredTestJavaOpts( 62 new String[] { "-Xlog:gc+verify=debug", 63 "-XX:+UseGCLogFileRotation", 64 "-XX:-DisplayVMOutput", 65 "VerifyBeforeGC", 66 "VerifyAfterGC" }); 67 testVerifyFlags(false, false, filteredOpts); 68 testVerifyFlags(true, true, filteredOpts); 69 testVerifyFlags(true, false, filteredOpts); 70 testVerifyFlags(false, true, filteredOpts); 71 } 72 testVerifyFlags(boolean verifyBeforeGC, boolean verifyAfterGC, String[] opts)73 public static void testVerifyFlags(boolean verifyBeforeGC, 74 boolean verifyAfterGC, 75 String[] opts) throws Exception { 76 ArrayList<String> vmOpts = new ArrayList<>(); 77 if (opts != null && (opts.length > 0)) { 78 Collections.addAll(vmOpts, opts); 79 } 80 Collections.addAll(vmOpts, new String[] { 81 "-Xlog:gc+verify=debug", 82 "-Xmx5m", 83 "-Xms5m", 84 "-Xmn3m", 85 "-XX:+UnlockDiagnosticVMOptions", 86 (verifyBeforeGC ? "-XX:+VerifyBeforeGC" 87 : "-XX:-VerifyBeforeGC"), 88 (verifyAfterGC ? "-XX:+VerifyAfterGC" 89 : "-XX:-VerifyAfterGC"), 90 GarbageProducer.class.getName() }); 91 ProcessBuilder procBuilder = 92 GCArguments.createJavaProcessBuilder(vmOpts.toArray( 93 new String[vmOpts.size()])); 94 OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start()); 95 96 analyzer.shouldHaveExitValue(0); 97 analyzer.shouldNotMatch(VERIFY_BEFORE_GC_CORRUPTED_PATTERN); 98 analyzer.shouldNotMatch(VERIFY_AFTER_GC_CORRUPTED_PATTERN); 99 100 if (verifyBeforeGC) { 101 analyzer.shouldMatch(VERIFY_BEFORE_GC_PATTERN); 102 } else { 103 analyzer.shouldNotMatch(VERIFY_BEFORE_GC_PATTERN); 104 } 105 106 if (verifyAfterGC) { 107 analyzer.shouldMatch(VERIFY_AFTER_GC_PATTERN); 108 } else { 109 analyzer.shouldNotMatch(VERIFY_AFTER_GC_PATTERN); 110 } 111 } 112 113 public static class GarbageProducer { 114 static long[][] garbage = new long[10][]; 115 main(String args[])116 public static void main(String args[]) { 117 int j = 0; 118 for(int i = 0; i<1000; i++) { 119 garbage[j] = new long[10000]; 120 j = (j+1)%garbage.length; 121 } 122 } 123 } 124 } 125