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.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 import jdk.jfr.internal.Type;
  39 
  40 @MetadataDefinition
  41 @Label("Stack Trace")
  42 @Name(Type.SETTINGS_PREFIX + "StackTrace")
  43 @Description("Record stack traces")
  44 @BooleanFlag
  45 public final class StackTraceSetting extends Control {
  46     private final static long typeId =  Type.getTypeId(StackTraceSetting.class);
  47     private final BooleanValue booleanValue;
  48     private final PlatformEventType eventType;
  49 
  50     public StackTraceSetting(PlatformEventType eventType, String defaultValue) {
  51         super(defaultValue);
  52         this.booleanValue = BooleanValue.valueOf(defaultValue);
  53         this.eventType = Objects.requireNonNull(eventType);
  54     }
  55 
  56     @Override
  57     public String combine(Set<String> values) {
  58         return booleanValue.union(values);
  59     }
  60 
  61     @Override
  62     public void setValue(String value) {
  63         booleanValue.setValue(value);
  64         eventType.setStackTraceEnabled(booleanValue.getBoolean());
  65     }
  66 
  67     @Override
  68     public String getValue() {
  69         return booleanValue.getValue();
  70     }
  71 
  72     public static boolean isType(long typeId) {
  73         return StackTraceSetting.typeId == typeId;
  74     }
  75 }