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.consumer;
  27 
  28 import java.util.Arrays;
  29 import java.util.Collections;
  30 import java.util.List;
  31 
  32 import jdk.jfr.ValueDescriptor;
  33 import jdk.jfr.internal.Type;
  34 
  35 /**
  36  * A recorded stack trace.
  37  *
  38  * @since 9
  39  */
  40 public final class RecordedStackTrace extends RecordedObject {
  41 
  42     static ObjectFactory<RecordedStackTrace> createFactory(Type type, TimeConverter timeConverter) {
  43         return new ObjectFactory<RecordedStackTrace>(type) {
  44             @Override
  45             RecordedStackTrace createTyped(List<ValueDescriptor> desc, long id, Object[] object) {
  46                 return new RecordedStackTrace(desc, object, timeConverter);
  47             }
  48         };
  49     }
  50 
  51     private RecordedStackTrace(List<ValueDescriptor> desc, Object[] values, TimeConverter timeConverter) {
  52         super(desc, values, timeConverter);
  53     }
  54 
  55     /**
  56      * Returns the frames in the stack trace.
  57      *
  58      * @return a list of Java stack frames, not {@code null}
  59      */
  60     @SuppressWarnings("unchecked")
  61     public List<RecordedFrame> getFrames() {
  62         Object[] array = getTyped("frames", Object[].class, null);
  63         if (array == null) {
  64             return Collections.EMPTY_LIST;
  65         }
  66         List<?> list = Arrays.asList(array);
  67         return (List<RecordedFrame>) list;
  68     }
  69 
  70     /**
  71      * Returns {@code true} if the stack trace is truncated due to its size,
  72      * {@code false} otherwise.
  73      *
  74      * @return {@code true} if the stack trace is truncated, {@code false}
  75      *         otherwise
  76      */
  77     public boolean isTruncated() {
  78         return getTyped("truncated", Boolean.class, true);
  79     }
  80 }