1 /* 2 * Copyright (c) 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.BooleanFlag; 32 import jdk.jfr.Description; 33 import jdk.jfr.Label; 34 import jdk.jfr.MetadataDefinition; 35 import jdk.jfr.Name; 36 import jdk.jfr.internal.Control; 37 import jdk.jfr.internal.PlatformEventType; 38 import jdk.jfr.internal.Type; 39 import jdk.jfr.internal.Utils; 40 41 @MetadataDefinition 42 @Label("Cutoff") 43 @Description("Limit running time of event") 44 @Name(Type.SETTINGS_PREFIX + "Cutoff") 45 @BooleanFlag 46 public final class CutoffSetting extends Control { 47 private final static long typeId = Type.getTypeId(CutoffSetting.class); 48 49 private String value = "0 ns"; 50 private final PlatformEventType eventType; 51 52 public CutoffSetting(PlatformEventType eventType, String defaultValue) { 53 super(defaultValue); 54 this.eventType = Objects.requireNonNull(eventType); 55 } 56 57 @Override 58 public String combine(Set<String> values) { 59 long max = 0; 60 String text = "0 ns"; 61 for (String value : values) { 62 long l = parseValue(value); 63 if (l > max) { 64 text = value; 65 max = l; 66 } 67 } 68 return text; 69 } 70 71 @Override 72 public void setValue(String value) { 73 long l = parseValue(value); 74 this.value = value; 75 eventType.setCutoff(l); 76 } 77 78 private long parseValue(String value) { 79 return isInfinity(value) ? Long.MAX_VALUE : Utils.parseTimespan(value); 80 } 81 82 @Override 83 public String getValue() { 84 return value; 85 } 86 87 public static boolean isType(long typeId) { 88 return CutoffSetting.typeId == typeId; 89 } 90 91 private static boolean isInfinity(String s) { 92 return s.equals("infinity"); 93 } 94 95 public static long parseValueSafe(String value) { 96 if (value == null) { 97 return 0L; 98 } 99 try { 100 return isInfinity(value) ? Long.MAX_VALUE : Utils.parseTimespan(value); 101 } catch (NumberFormatException nfe) { 102 return 0L; 103 } 104 } 105 }