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.event;

    27 

    28 import java.util.ArrayList;

    29 import java.util.List;

    30 

    31 import jdk.jfr.Recording;

    32 import jdk.test.lib.jfr.SimpleEventHelper;

    33 

    34 /*

    35  * @test

    36  * @summary Enable, disable, enable event during recording.

    37  * @key jfr

    38  * @library /test/lib

    39  * @run main/othervm jdk.jfr.api.recording.event.TestReEnableClass

    40  */

    41 public class TestReEnableClass {

    42 

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

    44         test(false);

    45         test(true);

    46     }

    47 

    48     // Loop and enable/disable events.

    49     // Verify recording only contains event created during enabled.

    50     private static void test(boolean isEnabled) throws Exception {

    51         System.out.println("Start with isEnabled = " + isEnabled);

    52 

    53         List<Integer> expectedIds = new ArrayList<>();

    54         Recording r = new Recording();

    55         SimpleEventHelper.enable(r, isEnabled);

    56         r.start();

    57 

    58         for (int i = 0; i < 10; ++i) {

    59             SimpleEventHelper.createEvent(i);

    60             if (isEnabled) {

    61                 expectedIds.add(i);

    62             }

    63             isEnabled = !isEnabled;

    64             SimpleEventHelper.enable(r, isEnabled);

    65         }

    66 

    67         r.stop();

    68         SimpleEventHelper.createEvent(100);

    69 

    70         int[] ids = new int[expectedIds.size()];

    71         for (int i = 0; i < expectedIds.size(); ++i) {

    72             ids[i] = expectedIds.get(i);

    73         }

    74         SimpleEventHelper.verifyEvents(r, ids);

    75 

    76         r.close();

    77     }

    78 

    79 }