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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

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 *

 * 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).

 *

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package jdk.jfr.jvm;

import java.io.IOException;

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

 * @requires vm.hasJFR

 *

 * @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 CrasherIllegalAccess {

        public static void main(String[] args) {

            Unsafe.getUnsafe().putInt(0L, 0);

        }

    }

    static class CrasherHalt {

        public static void main(String[] args) {

            System.out.println("Running Runtime.getRuntime.halt");

            Runtime.getRuntime().halt(17);

        }

    }

    static class CrasherSig {

        public static void main(String[] args) throws Exception {

            String signalName = args[0];

            System.out.println("Sending SIG" + signalName + " to process " + ProcessHandle.current().pid());

            Runtime.getRuntime().exec("kill -" + signalName + " " + ProcessHandle.current().pid()).waitFor();

        }

    }

    public static void main(String[] args) throws Exception {

        // Verification is excluded for the test case below until 8219680 is fixed

        // @ignore 8219680

        // verify(pid);

    }

        System.out.println("Test case for crasher " + crasher);

        Process p = ProcessTools.createJavaProcessBuilder(true,

                "-Xmx64m",

                "-XX:-CreateCoredumpOnCrash",

                "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED",

                crasher,

                signal)

            .start();

        OutputAnalyzer output = new OutputAnalyzer(p);

        System.out.println("========== Crasher process output:");

        System.out.println(output.getOutput());

        System.out.println("==================================");

        return p.pid();

    }

    private static void verify(long pid) throws IOException {

        String fileName = "hs_err_pid" + pid + ".jfr";

        Path file = Paths.get(fileName).toAbsolutePath().normalize();

        Asserts.assertTrue(Files.exists(file), "No emergency jfr recording file " + file + " exists");

        Asserts.assertNotEquals(Files.size(file), 0L, "File length 0. Should at least be some bytes");

        System.out.printf("File size=%d%n", Files.size(file));

        List<RecordedEvent> events = RecordingFile.readAllEvents(file);

        Asserts.assertFalse(events.isEmpty(), "No event found");

        System.out.printf("Found event %s%n", events.get(0).getEventType().getName());

    }

}