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.BooleanFlag; 33 import jdk.jfr.Label; 34 import jdk.jfr.MetadataDefinition; 35 import jdk.jfr.Name; 36 import jdk.jfr.internal.PlatformEventType; 37 import jdk.jfr.internal.Control; 38 39 @MetadataDefinition 40 @Label("Enabled") 41 @Description("Record event") 42 @Name("com.oracle.jfr.settings.Enabled") 43 @BooleanFlag 44 public final class EnabledSetting extends Control { 45 private final BooleanValue booleanValue; 46 private final PlatformEventType eventType; 47 48 public EnabledSetting(PlatformEventType eventType, String defaultValue) { 49 super(defaultValue); 50 this.booleanValue = BooleanValue.valueOf(defaultValue); 51 this.eventType = Objects.requireNonNull(eventType); 52 } 53 54 @Override 55 public String combine(Set<String> values) { 56 return booleanValue.union(values); 57 } 58 59 @Override 60 public void setValue(String value) { 61 booleanValue.setValue(value); 62 eventType.setEnabled(booleanValue.getBoolean()); 63 if (eventType.isEnabled() && !eventType.isJVM()) { 64 if (!eventType.isInstrumented()) { 65 eventType.markForInstrumentation(true); 66 } 67 } 68 } 69 70 @Override 71 public String getValue() { 72 return booleanValue.getValue(); 73 } 74 }