--- /dev/null Mon Nov 13 09:08:09 2017 +++ new/test/hotspot/jtreg/runtime/ErrorHandling/ThreadsListHandleInErrorHandlingTest.java Mon Nov 13 09:08:08 2017 @@ -0,0 +1,124 @@ +/* + * 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 8167108 + * @summary ThreadsListHandle info should be in error handling output. + * @modules java.base/jdk.internal.misc + * @library /test/lib + * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+EnableThreadSMRStatistics ThreadsListHandleInErrorHandlingTest + */ + +/* + * This test was created using SafeFetchInErrorHandlingTest.java + * as a guide. + */ +public class ThreadsListHandleInErrorHandlingTest { + public static void main(String[] args) throws Exception { + + if (!Platform.isDebugBuild()) { + // -XX:ErrorHandlerTest=N option requires debug bits. + return; + } + + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( + "-XX:+UnlockDiagnosticVMOptions", + "-Xmx100M", + "-XX:ErrorHandlerTest=16", + "-XX:-CreateCoredumpOnCrash", + "-version"); + + OutputAnalyzer output_detail = new OutputAnalyzer(pb.start()); + + // We should have crashed with a specific fatal error: + output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*"); + System.out.println("Found fatal error header."); + output_detail.shouldMatch("# +fatal error: Force crash with an active ThreadsListHandle."); + System.out.println("Found specific fatal error."); + + // Extract hs_err_pid 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_pid file in output.\n"); + } + + File f = new File(hs_err_file); + if (!f.exists()) { + throw new RuntimeException("hs_err_pid file missing at " + + f.getAbsolutePath() + ".\n"); + } + + System.out.println("Found hs_err_pid file. Scanning..."); + + FileInputStream fis = new FileInputStream(f); + BufferedReader br = new BufferedReader(new InputStreamReader(fis)); + String line = null; + + Pattern [] pattern = new Pattern[] { + // The "Current thread" line should show a hazard ptr: + Pattern.compile("Current thread .* _threads_hazard_ptr=0x.*"), + // We should have a section of Threads class SMR info: + Pattern.compile("Threads class SMR info:"), + // The current thread (marked with '=>') in the threads list + // should show a hazard ptr: + Pattern.compile("=>.* JavaThread \"main\" .*_threads_hazard_ptr=0x.*"), + }; + 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_pid file incomplete (first missing pattern: " + currentPattern + ")"); + } + + if (!lastLine.equals("END.")) { + throw new RuntimeException("hs-err file incomplete (missing END marker.)"); + } else { + System.out.println("End marker found."); + } + + System.out.println("Done scanning hs_err_pid_file."); + System.out.println("PASSED."); + } +}