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25 
26 package jdk.jfr.internal.settings;
27 
28 import java.util.Objects;
29 import java.util.Set;
30 
31 import jdk.jfr.Description;
32 import jdk.jfr.Label;
33 import jdk.jfr.MetadataDefinition;
34 import jdk.jfr.Name;
35 import jdk.jfr.Timespan;
36 import jdk.jfr.internal.Control;
37 import jdk.jfr.internal.PlatformEventType;
38 import jdk.jfr.internal.Type;
39 import jdk.jfr.internal.Utils;
40 
41 @MetadataDefinition
42 @Label("Cutoff")
43 @Description("Limit running time of event")
44 @Name(Type.SETTINGS_PREFIX + "Cutoff")
45 @Timespan
46 public final class CutoffSetting extends Control {
47     private final static long typeId = Type.getTypeId(CutoffSetting.class);
48 
49     private String value = "0 ns";
50     private final PlatformEventType eventType;
51 
CutoffSetting(PlatformEventType eventType, String defaultValue)52     public CutoffSetting(PlatformEventType eventType, String defaultValue) {
53        super(defaultValue);
54        this.eventType = Objects.requireNonNull(eventType);
55     }
56 
57     @Override
combine(Set<String> values)58     public String combine(Set<String> values) {
59         long max = 0;
60         String text = "0 ns";
61         for (String value : values) {
62             long l =  Utils.parseTimespanWithInfinity(value);
63             if (l > max) {
64                 text = value;
65                 max = l;
66             }
67         }
68         return text;
69     }
70 
71     @Override
setValue(String value)72     public void setValue(String value) {
73         long l =  Utils.parseTimespanWithInfinity(value);
74         this.value = value;
75         eventType.setCutoff(l);
76     }
77 
78     @Override
getValue()79     public String getValue() {
80         return value;
81     }
82 
isType(long typeId)83     public static boolean isType(long typeId) {
84         return CutoffSetting.typeId == typeId;
85     }
86 
parseValueSafe(String value)87     public static long parseValueSafe(String value) {
88         if (value == null) {
89             return 0L;
90         }
91         try {
92             return Utils.parseTimespanWithInfinity(value);
93         } catch (NumberFormatException nfe) {
94             return 0L;
95         }
96     }
97 }
98