/*
* Copyright ( c ) 2016 , 2018 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation . Oracle designates this
* particular file as subject to the " Classpath " exception as provided
* by Oracle in the LICENSE file that accompanied this code .
*
* 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
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
package jdk.jfr;
import java.lang.annotation.ElementType;
import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Event annotation , specifies the default duration below which an event is not
* recorded ( for example , { @ code " 20 ms " } ) .
*
* @ since 9
*/
@MetadataDefinition
@Target({ ElementType.TYPE })
@Inherited
@Retention(RetentionPolicy.RUNTIME)
public @interface Threshold {
/**
* Setting name { @ code " threshold " } for configuring event thresholds .
*/
public static final String NAME = "threshold" ;
/**
* The threshold ( for example , { @ code " 20 ms " } ) .
* < p >
* A { @ code String } representation of a positive { @ code Long } value followed by an
* empty space and one of the following units : < br >
* < br >
* { @ code " ns " } ( nanoseconds ) < br >
* { @ code " us " } ( microseconds ) < br >
* { @ code " ms " } ( milliseconds ) < br >
* { @ code " s " } ( seconds ) < br >
* { @ code " m " } ( minutes ) < br >
* { @ code " h " } ( hours ) < br >
* { @ code " d " } ( days ) < br >
* < p >
* Example values are { @ code " 0 ns " } , { @ code " 10 ms " } , and { @ code " 1 s " } .
*
* @ return the threshold , default { @ code " 0 ns " } , not { @ code null }
*/
String value() default "0 ns" ;
}
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(vorverarbeitet am 2026-09-11)
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