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 = null; 58 String text = null; 59 for (String value : values) { 60 long l = Utils.parseTimespanWithInfinity(value); 61 // always accept first value 62 if (min == null) { 63 min = l; 64 text = value; 65 } else { 66 if (l < min) { 67 text = value; 68 min = l; 69 } 70 } 71 } 72 return text == null ? "0 ns" : text; 73 } 74 75 @Override 76 public void setValue(String value) { 77 long l = Utils.parseTimespanWithInfinity(value); 78 this.value = value; 79 eventType.setThreshold(l); 80 } 81 82 @Override 83 public String getValue() { 84 return value; 85 } 86 87 public static boolean isType(long typeId) { 88 return ThresholdSetting.typeId == typeId; 89 } 90 }