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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * accompanied this code).
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package jdk.jfr;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

Event field annotation, specifies that the value is a duration.
Since:9
/** * Event field annotation, specifies that the value is a duration. * * @since 9 */
@MetadataDefinition @ContentType @Label("Timespan") @Description("A duration, measured in nanoseconds by default") @Retention(RetentionPolicy.RUNTIME) @Target({ ElementType.FIELD, ElementType.TYPE, ElementType.METHOD}) public @interface Timespan {
Unit for ticks.
/** * Unit for ticks. */
public static final String TICKS = "TICKS";
Unit for seconds.
/** * Unit for seconds. */
public static final String SECONDS = "SECONDS";
Unit for milliseconds.
/** * Unit for milliseconds. */
public static final String MILLISECONDS = "MILLISECONDS";
Unit for nanoseconds.
/** * Unit for nanoseconds. */
public static final String NANOSECONDS = "NANOSECONDS";
Unit for microseconds.
/** * Unit for microseconds. */
public static final String MICROSECONDS = "MICROSECONDS";
Returns the unit of measure for the time span.

By default, the unit is nanoseconds.

Returns:the time span unit, default NANOSECONDS, not null
/** * Returns the unit of measure for the time span. * <p> * By default, the unit is nanoseconds. * * @return the time span unit, default {@link #NANOSECONDS}, not {@code null} */
String value() default NANOSECONDS; }