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.misc;
  27 
  28 import java.util.HashMap;
  29 import java.util.Map;
  30 
  31 import jdk.jfr.Recording;
  32 import jdk.test.lib.Asserts;
  33 
  34 /**
  35  * @test
  36  * @summary Verify that each recording get unique a id
  37  * @key jfr
  38  *
  39  * @library /lib /
  40  * @run main/othervm  jdk.jfr.api.recording.misc.TestGetId
  41  */
  42 public class TestGetId {
  43 
  44     public static void main(String[] args) throws Throwable {
  45         Map<Long, Recording> recordings = new HashMap<>();
  46 
  47         final int iterations = 100;
  48         for (int i = 0; i < iterations; ++i) {
  49             Recording newRecording = new Recording();
  50             System.out.println("created: " + newRecording.getId());
  51             Recording oldRecording = recordings.get(newRecording.getId());
  52             Asserts.assertNull(oldRecording, "Duplicate recording ID: " + newRecording.getId());
  53             recordings.put(newRecording.getId(), newRecording);
  54 
  55             if (i % 3 == 0) {
  56                 Recording closeRecording = recordings.remove(recordings.keySet().iterator().next());
  57                 Asserts.assertNotNull(closeRecording, "Could not find recording in map. Test error.");
  58                 closeRecording.close();
  59                 System.out.println("closed: " + closeRecording.getId());
  60             }
  61         }
  62 
  63         for (Recording r : recordings.values()) {
  64             r.close();
  65         }
  66     }
  67 
  68 }