1 /* 2 * Copyright (c) 2017, 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 import java.io.BufferedReader; 25 import java.io.File; 26 import java.io.FileInputStream; 27 import java.io.InputStreamReader; 28 import java.util.regex.Pattern; 29 30 import jdk.test.lib.process.OutputAnalyzer; 31 import jdk.test.lib.Platform; 32 import jdk.test.lib.process.ProcessTools; 33 34 /* 35 * @test 36 * @bug 8167108 37 * @summary ThreadsListHandle info should be in error handling output. 38 * @modules java.base/jdk.internal.misc 39 * @library /test/lib 40 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+EnableThreadSMRStatistics ThreadsListHandleInErrorHandlingTest 41 */ 42 43 /* 44 * This test was created using SafeFetchInErrorHandlingTest.java 45 * as a guide. 46 */ 47 public class ThreadsListHandleInErrorHandlingTest { 48 public static void main(String[] args) throws Exception { 49 50 if (!Platform.isDebugBuild()) { 51 // -XX:ErrorHandlerTest=N option requires debug bits. 52 return; 53 } 54 55 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 56 "-XX:+UnlockDiagnosticVMOptions", 57 "-Xmx100M", 58 "-XX:ErrorHandlerTest=16", 59 "-XX:-CreateCoredumpOnCrash", 60 "-version"); 61 62 OutputAnalyzer output_detail = new OutputAnalyzer(pb.start()); 63 64 // We should have crashed with a specific fatal error: 65 output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*"); 66 System.out.println("Found fatal error header."); 67 output_detail.shouldMatch("# +fatal error: Force crash with an active ThreadsListHandle."); 68 System.out.println("Found specific fatal error."); 69 70 // Extract hs_err_pid file. 71 String hs_err_file = output_detail.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1); 72 if (hs_err_file == null) { 73 throw new RuntimeException("Did not find hs_err_pid file in output.\n"); 74 } 75 76 File f = new File(hs_err_file); 77 if (!f.exists()) { 78 throw new RuntimeException("hs_err_pid file missing at " 79 + f.getAbsolutePath() + ".\n"); 80 } 81 82 System.out.println("Found hs_err_pid file. Scanning..."); 83 84 FileInputStream fis = new FileInputStream(f); 85 BufferedReader br = new BufferedReader(new InputStreamReader(fis)); 86 String line = null; 87 88 Pattern [] pattern = new Pattern[] { 89 // The "Current thread" line should show a hazard ptr: 90 Pattern.compile("Current thread .* _threads_hazard_ptr=0x.*"), 91 // We should have a section of Threads class SMR info: 92 Pattern.compile("Threads class SMR info:"), 93 // The current thread (marked with '=>') in the threads list 94 // should show a hazard ptr: 95 Pattern.compile("=>.* JavaThread \"main\" .*_threads_hazard_ptr=0x.*"), 96 }; 97 int currentPattern = 0; 98 99 String lastLine = null; 100 while ((line = br.readLine()) != null) { 101 if (currentPattern < pattern.length) { 102 if (pattern[currentPattern].matcher(line).matches()) { 103 System.out.println("Found: " + line + "."); 104 currentPattern++; 105 } 106 } 107 lastLine = line; 108 } 109 br.close(); 110 111 if (currentPattern < pattern.length) { 112 throw new RuntimeException("hs_err_pid file incomplete (first missing pattern: " + currentPattern + ")"); 113 } 114 115 if (!lastLine.equals("END.")) { 116 throw new RuntimeException("hs-err file incomplete (missing END marker.)"); 117 } else { 118 System.out.println("End marker found."); 119 } 120 121 System.out.println("Done scanning hs_err_pid_file."); 122 System.out.println("PASSED."); 123 } 124 }