1 /*

     2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

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

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

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

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package jdk.jfr.api.recording.state;

    27 

    28 import java.time.Duration;

    29 import java.time.Instant;

    30 

    31 import jdk.jfr.Recording;

    32 import jdk.jfr.RecordingState;

    33 import jdk.test.lib.jfr.CommonHelper;

    34 import jdk.test.lib.jfr.VoidFunction;

    35 

    36 /*

    37  * @test

    38  * @summary Test Recording state

    39  * @key jfr

    40  * @library /test/lib

    41  * @run main/othervm jdk.jfr.api.recording.state.TestStateScheduleStart

    42  */

    43 public class TestStateScheduleStart {

    44 

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

    46         Recording r = new Recording();

    47         CommonHelper.verifyRecordingState(r, RecordingState.NEW);

    48 

    49         Instant start = Instant.now();

    50         r.scheduleStart(Duration.ofMillis(2000));

    51 

    52         System.out.println("Wait for recording to start: " + start);

    53         CommonHelper.waitForRecordingState(r, RecordingState.RUNNING);

    54 

    55         // Duration should be about 2000 ms.

    56         // Test servers vary too much in performance to make an accurate check.

    57         // We only check that we don't time out after 20 seconds.

    58         Instant started = Instant.now();

    59         long millis = Duration.between(start, started).toMillis();

    60         System.out.println("Recording started at " + started + ". Delta millis=" + millis + ", expeced about 2000");

    61 

    62         verifyIllegalState(() -> r.start(), "double start()");

    63         r.stop();

    64         CommonHelper.verifyRecordingState(r, RecordingState.STOPPED);

    65         r.close();

    66         CommonHelper.verifyRecordingState(r, RecordingState.CLOSED);

    67     }

    68 

    69     private static void verifyIllegalState(VoidFunction f, String msg) throws Throwable {

    70         CommonHelper.verifyException(f, msg, IllegalStateException.class);

    71     }

    72 }