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.jcmd;

    27 

    28 import java.time.Duration;

    29 

    30 import jdk.jfr.FlightRecorder;

    31 import jdk.jfr.Recording;

    32 

    33 /**

    34  * @test

    35  * @summary Start a recording with a flush interval

    36  * @key jfr

    37  * @requires vm.hasJFR

    38  * @library /test/lib /test/jdk

    39  * @run main/othervm jdk.jfr.jcmd.TestJcmdStartReadOnlyFile

    40  */

    41 public class TestJcmdStartFlushInterval {

    42 

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

    44         JcmdHelper.jcmd("JFR.start","flush-interval=1s");

    45         for (Recording r : FlightRecorder.getFlightRecorder().getRecordings()) {

    46             Duration d = r.getFlushInterval();

    47             if (d.equals(Duration.ofSeconds(1))) {

    48                 return; //OK

    49             } else {

    50                 throw new Exception("Unexpected flush-interval=" + d);

    51             }

    52         }

    53         throw new Exception("No recording found");

    54     }

    55 

    56 }