1 /* 2 * Copyright (c) 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 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 8166944 37 * @summary Hanging Error Reporting steps may lead to torn error logs 38 * @modules java.base/jdk.internal.misc 39 * @library /test/lib 40 * @requires vm.debug == true 41 * @author Thomas Stuefe (SAP) 42 */ 43 44 public class TimeoutInErrorHandlingTest { 45 46 47 public static void main(String[] args) throws Exception { 48 49 /* Start the VM and let it crash. Specify TestUnresponsiveErrorHandler which will 50 * let three subsequent error reporting steps hang. The Timeout handling triggered 51 * by the WatcherThread should kick in and interrupt those steps. 52 * 53 * Timeout in Error Reporting is controlled by ErrorLogTimeout, which defines after 54 * how many seconds error reporting is stopped altogether and the VM is aborted. 55 * Each error reporting step is granted up to half of this time before it is canceled 56 * and the next step is started (the logic being, typically error steps are 57 * instantaneous, if they hang, its typically an error which only should affect one 58 * or two steps). 59 * So, by causing three subsequent steps to hang, we expect the error log to contain 60 * at least one, possibly two step-timeout messages, and then the global ErrorLogTimeout 61 * should have been reached and the VM should have been aborted by the WatcherThread, 62 * which should write "timer expired, abort..." to stderr. */ 63 64 // Not debug, not windows (yet) 65 if (!Platform.isDebugBuild() || Platform.isWindows()) { 66 return; 67 } 68 69 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 70 "-XX:+UnlockDiagnosticVMOptions", 71 "-Xmx100M", 72 "-XX:ErrorHandlerTest=14", 73 "-XX:+TestUnresponsiveErrorHandler", 74 "-XX:ErrorLogTimeout=10", // 10 seconds 75 "-XX:-CreateCoredumpOnCrash", 76 "-version"); 77 78 OutputAnalyzer output_detail = new OutputAnalyzer(pb.start()); 79 80 // we should have crashed with a SIGSEGV 81 output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*"); 82 output_detail.shouldMatch("# +(?:SIGSEGV|EXCEPTION_ACCESS_VIOLATION).*"); 83 84 // VM should have been aborted by WatcherThread 85 output_detail.shouldMatch(".*timer expired, abort.*"); 86 87 // extract hs-err file 88 String hs_err_file = output_detail.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1); 89 if (hs_err_file == null) { 90 throw new RuntimeException("Did not find hs-err file in output.\n"); 91 } 92 93 File f = new File(hs_err_file); 94 if (!f.exists()) { 95 throw new RuntimeException("hs-err file missing at " 96 + f.getAbsolutePath() + ".\n"); 97 } 98 99 System.out.println("Found hs_err file. Scanning..."); 100 101 FileInputStream fis = new FileInputStream(f); 102 BufferedReader br = new BufferedReader(new InputStreamReader(fis)); 103 String line = null; 104 105 Pattern [] pattern = new Pattern[] { 106 Pattern.compile(".*timeout occurred during error reporting in step.*") 107 }; 108 int currentPattern = 0; 109 110 String lastLine = null; 111 while ((line = br.readLine()) != null) { 112 if (currentPattern < pattern.length) { 113 if (pattern[currentPattern].matcher(line).matches()) { 114 System.out.println("Found: " + line + "."); 115 currentPattern ++; 116 } 117 } 118 lastLine = line; 119 } 120 br.close(); 121 122 if (currentPattern < pattern.length) { 123 throw new RuntimeException("hs-err file incomplete (first missing pattern: " + currentPattern + ")"); 124 } 125 126 System.out.println("OK."); 127 128 } 129 130 } 131