1 /*

     2  * Copyright (c) 2019, 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.time;

    27 

    28 import java.time.Duration;

    29 import java.util.concurrent.CountDownLatch;

    30 

    31 import jdk.jfr.Recording;

    32 import jdk.jfr.consumer.EventStream;

    33 import jdk.test.lib.Asserts;

    34 

    35 /**

    36  * @test

    37  * @key jfr

    38  * @summary Test Recording::SetFlushInterval(...) and

    39  *          Recording::getFlushInterval()

    40  * @requires vm.hasJFR

    41  * @library /test/lib

    42  * @run main/othervm jdk.jfr.api.recording.time.TestSetFlushInterval

    43  */

    44 

    45 public class TestSetFlushInterval {

    46 

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

    48         testSetGet();

    49         testSetNull();

    50         testFlush();

    51     }

    52 

    53     static void testFlush() throws Exception {

    54         CountDownLatch flush = new CountDownLatch(1);

    55         try (EventStream es = EventStream.openRepository()) {

    56             es.onFlush(() -> {

    57                 flush.countDown();

    58             });

    59             es.startAsync();

    60             try (Recording r = new Recording()) {

    61                 r.setFlushInterval(Duration.ofSeconds(1));

    62                 r.start();

    63                 flush.await();

    64             }

    65         }

    66     }

    67 

    68     static void testSetNull() {

    69         try (Recording r = new Recording()) {

    70             r.setFlushInterval(null);

    71             Asserts.fail("Expected NullPointerException");

    72         } catch (NullPointerException npe) {

    73             // as expected

    74         }

    75     }

    76 

    77     static void testSetGet() {

    78         try (Recording r = new Recording()) {

    79             Duration a = Duration.ofNanos(21378461289374646L);

    80             r.setFlushInterval(a);

    81             Duration b = r.getFlushInterval();

    82             Asserts.assertEQ(a, b);

    83         }

    84     }

    85 

    86 }