1 /*

     2  * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    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.PlatformEventType;

    37 import jdk.jfr.internal.Control;

    38 import jdk.jfr.internal.Type;

    39 import jdk.jfr.internal.Utils;

    40 @MetadataDefinition

    41 @Label("Threshold")

    42 @Name(Type.SETTINGS_PREFIX + "Threshold")

    43 @Description("Record event with duration above or equal to threshold")

    44 @Timespan

    45 public final class ThresholdSetting extends Control {

    46     private final static long typeId = Type.getTypeId(ThresholdSetting.class);

    47     private String value = "0 ns";

    48     private final PlatformEventType eventType;

    49 

    50     public ThresholdSetting(PlatformEventType eventType, String defaultValue) {

    51        super(defaultValue);

    52        this.eventType = Objects.requireNonNull(eventType);

    53     }

    54 

    55     @Override

    56     public String combine(Set<String> values) {

    57         long min = Long.MAX_VALUE;

    58         String text = "0 ns";

    59         for (String value : values) {

    60             long l = Utils.parseTimespan(value);

    61             if (l < min) {

    62                 text = value;

    63                 min = l;

    64             }

    65         }

    66         return text;

    67     }

    68 

    69     @Override

    70     public void setValue(String value) {

    71         long l = Utils.parseTimespan(value);

    72         this.value = value;

    73         eventType.setThreshold(l);

    74     }

    75 

    76     @Override

    77     public String getValue() {

    78         return value;

    79     }

    80 

    81     public static boolean isType(long typeId) {

    82         return ThresholdSetting.typeId == typeId;

    83     }

    84 }