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25 
26 package jdk.jfr.event.oldobject;
27 
28 import java.util.ArrayList;
29 import java.util.List;
30 
31 import jdk.jfr.Recording;
32 import jdk.jfr.consumer.RecordedEvent;
33 import jdk.jfr.internal.test.WhiteBox;
34 import jdk.test.lib.jfr.EventNames;
35 import jdk.test.lib.jfr.Events;
36 
37 /**
38  * @test
39  * @key jfr
40  * @requires vm.hasJFR
41  * @requires vm.gc == "null"
42  * @summary Test leak profiler with Parallel GC
43  * @library /test/lib /test/jdk
44  * @modules jdk.jfr/jdk.jfr.internal.test
45  * @run main/othervm  -XX:TLABSize=2k -XX:+UseParallelGC jdk.jfr.event.oldobject.TestParallel
46  */
47 public class TestParallel {
48 
49     static private class FindMe {
50     }
51 
52     public static List<FindMe[]> list = new ArrayList<>(OldObjects.MIN_SIZE);
53 
main(String[] args)54     public static void main(String[] args) throws Exception {
55         WhiteBox.setWriteAllObjectSamples(true);
56 
57         try (Recording r = new Recording()) {
58             r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity");
59             r.start();
60             allocateFindMe();
61             System.gc();
62             r.stop();
63             List<RecordedEvent> events = Events.fromRecording(r);
64             System.out.println(events);
65             if (OldObjects.countMatchingEvents(events, FindMe[].class, null, null, -1, "allocateFindMe") == 0) {
66                 throw new Exception("Could not find leak with " + FindMe[].class);
67             }
68         }
69     }
70 
allocateFindMe()71     public static void allocateFindMe() {
72         for (int i = 0; i < OldObjects.MIN_SIZE; i++) {
73             // Allocate array to trigger sampling code path for interpreter / c1
74             list.add(new FindMe[0]);
75         }
76     }
77 
78 }
79