--- /dev/null 2018-06-17 23:18:20.806999507 +0800 +++ new/test/jdk/jfr/jvm/TestDumpOnCrash.java 2019-01-29 11:05:30.026330630 +0800 @@ -0,0 +1,102 @@ +/* + * Copyright (c) 2016, 2019, 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. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * 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. + */ +package jdk.jfr.jvm; + +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.util.List; + +// import jdk.internal.misc.Unsafe; +import sun.misc.Unsafe; +import jdk.jfr.consumer.RecordedEvent; +import jdk.jfr.consumer.RecordingFile; +import jdk.testlibrary.Asserts; +import jdk.testlibrary.OutputAnalyzer; +import jdk.testlibrary.ProcessTools; + +/* + * @test + * @key jfr + * @summary Verifies that data associated with a running recording can be evacuated to an hs_err_pidXXX.jfr when the VM crashes + * + * @library /lib/testlibrary + * @modules java.base/jdk.internal.misc + * java.management + * jdk.jfr + * + * @run main/othervm jdk.jfr.jvm.TestDumpOnCrash + */ +public class TestDumpOnCrash { + + private static final CharSequence LOG_FILE_EXTENSION = ".log"; + private static final CharSequence JFR_FILE_EXTENSION = ".jfr"; + + static class Crasher { + public static void main(String[] args) { + Unsafe.getUnsafe().putInt(0L, 0); + } + } + + public static void main(String[] args) throws Exception { + //-XX:StartFlightRecording=dumponexit=true doesn't support + //processOutput(runProcess()); + } + + private static OutputAnalyzer runProcess() throws Exception { + return new OutputAnalyzer( + ProcessTools.createJavaProcessBuilder(true, + "-Xmx64m", + "-Xint", + "-XX:-TransmitErrorReport", + "-XX:-CreateCoredumpOnCrash", + "-XX:StartFlightRecording=dumponexit=true", + Crasher.class.getName()).start()); + } + + private static void processOutput(OutputAnalyzer output) throws Exception { + //output.shouldContain("CreateCoredumpOnCrash turned off, no core file dumped"); + + final Path jfrEmergencyFilePath = getHsErrJfrPath(output); + Asserts.assertTrue(Files.exists(jfrEmergencyFilePath), "No emergency jfr recording file " + jfrEmergencyFilePath + " exists"); + Asserts.assertNotEquals(Files.size(jfrEmergencyFilePath), 0L, "File length 0. Should at least be some bytes"); + System.out.printf("File size=%d%n", Files.size(jfrEmergencyFilePath)); + + List events = RecordingFile.readAllEvents(jfrEmergencyFilePath); + Asserts.assertFalse(events.isEmpty(), "No event found"); + System.out.printf("Found event %s%n", events.get(0).getEventType().getName()); + } + + private static Path getHsErrJfrPath(OutputAnalyzer output) throws Exception { + // extract to find hs-err_pid log file location + final String hs_err_pid_log_file = output.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1); + if (hs_err_pid_log_file == null) { + throw new RuntimeException("Did not find hs_err_pid.log file in output.\n"); + } + // the dumped out jfr file should have the same name and location but with a .jfr extension + final String hs_err_pid_jfr_file = hs_err_pid_log_file.replace(LOG_FILE_EXTENSION, JFR_FILE_EXTENSION); + return Paths.get(hs_err_pid_jfr_file); + } +}