1 /*
2  * Copyright (C) 2008 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.hit;
18 
19 public class StackTrace {
20     int mSerialNumber;
21     int mThreadSerialNumber;
22     StackFrame[] mFrames;
23 
24     /*
25      * For subsets of the stack frame we'll reference the parent list of frames
26      * but keep track of its offset into the parent's list of stack frame ids.
27      * This alleviates the need to constantly be duplicating subsections of the
28      * list of stack frame ids.
29      */
30     StackTrace mParent = null;
31     int mOffset = 0;
32 
StackTrace()33     private StackTrace() {
34 
35     }
36 
StackTrace(int serial, int thread, StackFrame[] frames)37     public StackTrace(int serial, int thread, StackFrame[] frames) {
38         mSerialNumber = serial;
39         mThreadSerialNumber = thread;
40         mFrames = frames;
41     }
42 
fromDepth(int startingDepth)43     public final StackTrace fromDepth(int startingDepth) {
44         StackTrace result = new StackTrace();
45 
46         if (mParent != null) {
47             result.mParent = mParent;
48         } else {
49             result.mParent = this;
50         }
51 
52         result.mOffset = startingDepth + mOffset;
53 
54         return result;
55     }
56 
dump()57     public final void dump() {
58         final int N = mFrames.length;
59 
60         for (int i = 0; i < N; i++) {
61             System.out.println(mFrames[i].toString());
62         }
63     }
64 }
65