| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.InputStreamReader; |
| import java.util.regex.Pattern; |
| |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.Platform; |
| import jdk.test.lib.process.ProcessTools; |
| |
| /* |
| * @test |
| * @bug 8166944 |
| * @summary Hanging Error Reporting steps may lead to torn error logs |
| * @modules java.base/jdk.internal.misc |
| * @library /test/lib |
| * @requires (vm.debug == true) & (os.family != "windows") |
| * @author Thomas Stuefe (SAP) |
| */ |
| |
| public class TimeoutInErrorHandlingTest { |
| |
| |
| public static void main(String[] args) throws Exception { |
| |
| /* Start the VM and let it crash. Specify TestUnresponsiveErrorHandler which will |
| * let five subsequent error reporting steps hang. The Timeout handling triggered |
| * by the WatcherThread should kick in and interrupt those steps. In theory, the |
| * text "timeout occurred during error reporting in step .." (the little timeouts) |
| * should occur in the error log up to four times, followed by the final big timeout |
| * "------ Timeout during error reporting after xx s. ------" |
| * |
| * Note that there are a number of uncertainties which make writing a 100% foolproof |
| * test challenging. The time the error reporting thread takes to react to the |
| * timeout triggers is unknown. So it is difficult to predict how many little timeouts |
| * will be visible before the big timeout kicks in. Also, once the big timeout hits, |
| * error reporting thread and Watcherthread will race. The former writes his last |
| * message to the error logs and flushes, the latter waits 200ms and then exits the |
| * process without further synchronization with the error reporting thread. |
| * |
| * Because of all this and the desire to write a bullet proof test which does |
| * not fail sporadically, we will not test for the final timeout message nor for all |
| * of the optimally expected little timeout messages. We just test for two of the |
| * little timeout messages to see that repeated timeout handling is basically working. |
| */ |
| |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-Xmx100M", |
| "-XX:ErrorHandlerTest=14", |
| "-XX:+TestUnresponsiveErrorHandler", |
| "-XX:ErrorLogTimeout=16", // 16 seconds big timeout = 4 seconds per little timeout |
| "-XX:-CreateCoredumpOnCrash", |
| "-version"); |
| |
| OutputAnalyzer output_detail = new OutputAnalyzer(pb.start()); |
| |
| // we should have crashed with a SIGSEGV |
| output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*"); |
| output_detail.shouldMatch("# +(?:SIGSEGV|EXCEPTION_ACCESS_VIOLATION).*"); |
| |
| // VM should have been aborted by WatcherThread |
| output_detail.shouldMatch(".*timer expired, abort.*"); |
| |
| // extract hs-err file |
| String hs_err_file = output_detail.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1); |
| if (hs_err_file == null) { |
| throw new RuntimeException("Did not find hs-err file in output.\n"); |
| } |
| |
| File f = new File(hs_err_file); |
| if (!f.exists()) { |
| throw new RuntimeException("hs-err file missing at " |
| + f.getAbsolutePath() + ".\n"); |
| } |
| |
| System.out.println("Found hs_err file. Scanning..."); |
| |
| FileInputStream fis = new FileInputStream(f); |
| BufferedReader br = new BufferedReader(new InputStreamReader(fis)); |
| String line = null; |
| |
| |
| |
| Pattern [] pattern = new Pattern[] { |
| Pattern.compile(".*timeout occurred during error reporting in step.*"), |
| Pattern.compile(".*timeout occurred during error reporting in step.*") |
| }; |
| int currentPattern = 0; |
| |
| String lastLine = null; |
| while ((line = br.readLine()) != null) { |
| if (currentPattern < pattern.length) { |
| if (pattern[currentPattern].matcher(line).matches()) { |
| System.out.println("Found: " + line + "."); |
| currentPattern ++; |
| } |
| } |
| lastLine = line; |
| } |
| br.close(); |
| |
| if (currentPattern < pattern.length) { |
| throw new RuntimeException("hs-err file incomplete (first missing pattern: " + currentPattern + ")"); |
| } |
| |
| System.out.println("OK."); |
| |
| } |
| |
| } |
| |