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
17package com.android.hit;
18
19public 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
33    private StackTrace() {
34
35    }
36
37    public StackTrace(int serial, int thread, StackFrame[] frames) {
38        mSerialNumber = serial;
39        mThreadSerialNumber = thread;
40        mFrames = frames;
41    }
42
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
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