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.flightrecorder;

    27 

    28 import static jdk.test.lib.Asserts.assertEquals;

    29 import static jdk.test.lib.Asserts.assertFalse;

    30 import static jdk.test.lib.Asserts.assertTrue;

    31 

    32 import java.util.List;

    33 

    34 import jdk.jfr.FlightRecorder;

    35 import jdk.jfr.Recording;

    36 

    37 /*

    38  * @test

    39  * @key jfr

    40  * @library /test/lib

    41  * @run main/othervm jdk.jfr.api.flightrecorder.TestGetRecordings

    42  */

    43 public class TestGetRecordings {

    44 

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

    46         FlightRecorder recorder = FlightRecorder.getFlightRecorder();

    47 

    48         // Recording should be empty at start.

    49         List<Recording> recordings = recorder.getRecordings();

    50         assertTrue(recordings.isEmpty(), "recordings should be empty at start");

    51 

    52         // Create first recording

    53         Recording r1 = new Recording();

    54         recordings = recorder.getRecordings();

    55         assertEquals(recordings.size(), 1, "Expected 1 recording");

    56         assertTrue(recordings.contains(r1), "r1 should be in list");

    57 

    58         // Create second recording

    59         Recording r2 = new Recording();

    60         recordings = recorder.getRecordings();

    61         assertEquals(recordings.size(), 2, "Expected 2 recordings");

    62         assertTrue(recordings.contains(r2), "r2 should be in list");

    63         assertTrue(recordings.contains(r1), "r1 should still be in list");

    64 

    65         // Close first recording

    66         r1.close();

    67         recordings = recorder.getRecordings();

    68         assertEquals(recordings.size(), 1, "Expected 1 remaining recording");

    69         assertTrue(recordings.contains(r2), "r2 should still be in list");

    70         assertFalse(recordings.contains(r1), "r1 should be removed");

    71 

    72         // Close second recording

    73         r2.close();

    74         recordings = recorder.getRecordings();

    75         assertTrue(recordings.isEmpty(), "recordings should be empty after close");

    76 

    77         // Create recording with new Recording()

    78         Recording r3 = new Recording();

    79         recordings = recorder.getRecordings();

    80         assertTrue(recordings.contains(r3 ), "new Recording() should be in list");

    81         r3.close();

    82     }

    83 

    84 }