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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  * @requires vm.hasJFR
39  * @library /test/lib
40  * @run main/othervm  jdk.jfr.api.recording.misc.TestGetId
41  */
42 public class TestGetId {
43 
main(String[] args)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 }
69