1 /* 2 * Copyright (c) 2015, 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.management 32 * @library /testlibrary 33 * @run driver TestVerifyBeforeAndAfterGCFlags 34 */ 35 36 import java.util.ArrayList; 37 import java.util.Collections; 38 39 import jdk.test.lib.Utils; 40 import jdk.test.lib.OutputAnalyzer; 41 import jdk.test.lib.ProcessTools; 42 43 public class TestVerifyBeforeAndAfterGCFlags { 44 45 // VerifyBeforeGC:[Verifying threads heap tenured eden syms strs zone dict metaspace chunks hand C-heap code cache ] 46 public static final String VERIFY_BEFORE_GC_PATTERN = "VerifyBeforeGC:\\[Verifying\\s+([^]\\s]+\\s+)+\\]"; 47 // VerifyBeforeGC: VerifyBeforeGC: VerifyBeforeGC: 48 public static final String VERIFY_BEFORE_GC_CORRUPTED_PATTERN = "VerifyBeforeGC:(?!\\[Verifying[^]]+\\])"; 49 50 // VerifyAfterGC:[Verifying threads heap tenured eden syms strs zone dict metaspace chunks hand C-heap code cache ] 51 public static final String VERIFY_AFTER_GC_PATTERN = "VerifyAfterGC:\\[Verifying\\s+([^]\\s]+\\s+)+\\]"; 52 // VerifyAfterGC: VerifyAfterGC: VerifyAfterGC: 53 public static final String VERIFY_AFTER_GC_CORRUPTED_PATTERN = "VerifyAfterGC:(?!\\[Verifying[^]]+\\])"; 54 55 public static void main(String args[]) throws Exception { 56 String[] filteredOpts = Utils.getFilteredTestJavaOpts( 57 new String[] { "-Xloggc:", 58 "-XX:+UseGCLogFileRotation", 59 "-XX:-DisplayVMOutput", 60 "VerifyBeforeGC", 61 "VerifyAfterGC" }); 62 testVerifyFlags(false, false, filteredOpts); 63 testVerifyFlags(true, true, filteredOpts); 64 testVerifyFlags(true, false, filteredOpts); 65 testVerifyFlags(false, true, filteredOpts); 66 } 67 68 public static void testVerifyFlags(boolean verifyBeforeGC, 69 boolean verifyAfterGC, 70 String[] opts) throws Exception { 71 ArrayList<String> vmOpts = new ArrayList<>(); 72 if (opts != null && (opts.length > 0)) { 73 Collections.addAll(vmOpts, opts); 74 } 75 76 Collections.addAll(vmOpts, new String[] { 77 "-Xmx5m", 78 "-Xms5m", 79 "-Xmn3m", 80 "-XX:+UnlockDiagnosticVMOptions", 81 (verifyBeforeGC ? "-XX:+VerifyBeforeGC" 82 : "-XX:-VerifyBeforeGC"), 83 (verifyAfterGC ? "-XX:+VerifyAfterGC" 84 : "-XX:-VerifyAfterGC"), 85 GarbageProducer.class.getName() }); 86 ProcessBuilder procBuilder = 87 ProcessTools.createJavaProcessBuilder(vmOpts.toArray( 88 new String[vmOpts.size()])); 89 OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start()); 90 91 analyzer.shouldHaveExitValue(0); 92 analyzer.shouldNotMatch(VERIFY_BEFORE_GC_CORRUPTED_PATTERN); 93 analyzer.shouldNotMatch(VERIFY_AFTER_GC_CORRUPTED_PATTERN); 94 95 if (verifyBeforeGC) { 96 analyzer.shouldMatch(VERIFY_BEFORE_GC_PATTERN); 97 } else { 98 analyzer.shouldNotMatch(VERIFY_BEFORE_GC_PATTERN); 99 } 100 101 if (verifyAfterGC) { 102 analyzer.shouldMatch(VERIFY_AFTER_GC_PATTERN); 103 } else { 104 analyzer.shouldNotMatch(VERIFY_AFTER_GC_PATTERN); 105 } 106 } 107 108 public static class GarbageProducer { 109 static long[][] garbage = new long[10][]; 110 111 public static void main(String args[]) { 112 int j = 0; 113 for(int i = 0; i<1000; i++) { 114 garbage[j] = new long[10000]; 115 j = (j+1)%garbage.length; 116 } 117 } 118 } 119 }