1 /* 2 * Copyright (c) 2016, 2019, 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("com.oracle.jfr.settings.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 }