| /* |
| * Copyright (c) 2016, 2018, 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 jdk.jfr.consumer.RecordedEvent; |
| import jdk.jfr.consumer.RecordingFile; |
| import jdk.test.lib.Asserts; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.process.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 /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * jdk.jfr |
| * |
| * @run main/othervm --add-exports=java.base/jdk.internal.misc=ALL-UNNAMED 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 { |
| processOutput(runProcess()); |
| } |
| |
| private static OutputAnalyzer runProcess() throws Exception { |
| return new OutputAnalyzer( |
| ProcessTools.createJavaProcessBuilder(true, |
| "-Xmx64m", |
| "-Xint", |
| "-XX:-TransmitErrorReport", |
| "-XX:-CreateCoredumpOnCrash", |
| "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED", |
| "-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<RecordedEvent> 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); |
| } |
| } |