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