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25 
26 package jdk.jfr.api.metadata.annotations;
27 
28 import jdk.jfr.Event;
29 import jdk.jfr.EventType;
30 import jdk.jfr.Frequency;
31 import jdk.jfr.MemoryAddress;
32 import jdk.jfr.DataAmount;
33 import jdk.jfr.Percentage;
34 import jdk.jfr.Timespan;
35 import jdk.jfr.Timestamp;
36 import jdk.jfr.TransitionFrom;
37 import jdk.jfr.TransitionTo;
38 import jdk.jfr.Unsigned;
39 import jdk.jfr.ValueDescriptor;
40 import jdk.test.lib.jfr.Events;
41 
42 /**
43  * @test
44  * @key jfr
45  *
46  * @library /lib /
47  * @run main/othervm jdk.jfr.api.metadata.annotations.TestFieldAnnotations
48  */
49 public class TestFieldAnnotations {
50 
51     static class FieldAnnotationEvent extends Event {
52         @DataAmount
53         int memoryAmount;
54 
55         @Frequency
56         float frequency;
57 
58         @MemoryAddress
59         long memoryAddress;
60 
61         @Percentage
62         float percentage;
63 
64         @TransitionFrom
65         Thread fromThread;
66 
67         @TransitionTo
68         Thread toThread;
69 
70         @Unsigned
71         long unsigned;
72 
73         @Timespan(Timespan.MILLISECONDS)
74         long timespan;
75 
76         @Timestamp(Timestamp.MILLISECONDS_SINCE_EPOCH)
77         long timestamp;
78     }
79 
main(String[] args)80     public static void main(String[] args) throws Exception {
81         EventType t = EventType.getEventType(FieldAnnotationEvent.class);
82 
83         ValueDescriptor field = t.getField("memoryAmount");
84         Events.hasAnnotation(field, DataAmount.class);
85 
86         field = t.getField("frequency");
87         Events.hasAnnotation(field, Frequency.class);
88 
89         field = t.getField("memoryAddress");
90         Events.hasAnnotation(field, MemoryAddress.class);
91 
92         field = t.getField("percentage");
93         Events.hasAnnotation(field, Percentage.class);
94 
95         field = t.getField("fromThread");
96         Events.hasAnnotation(field, TransitionFrom.class);
97 
98         field = t.getField("toThread");
99         Events.hasAnnotation(field, TransitionTo.class);
100 
101         field = t.getField("unsigned");
102         Events.hasAnnotation(field, Unsigned.class);
103 
104         field = t.getField("timespan");
105         Events.assertAnnotation(field, Timespan.class, Timespan.MILLISECONDS);
106 
107         field = t.getField("timestamp");
108         Events.assertAnnotation(field, Timestamp.class, Timestamp.MILLISECONDS_SINCE_EPOCH);
109     }
110 }
111