1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <stdint.h>
30
31#include "BacktraceData.h"
32#include "Config.h"
33#include "DebugData.h"
34#include "debug_disable.h"
35#include "FreeTrackData.h"
36#include "GuardData.h"
37#include "malloc_debug.h"
38#include "TrackData.h"
39
40bool DebugData::Initialize() {
41  if (!config_.SetFromProperties()) {
42    return false;
43  }
44
45  // Check to see if the options that require a header are enabled.
46  if ((config_.options & ~(NO_HEADER_OPTIONS)) != 0) {
47    need_header_ = true;
48
49    // Initialize all of the static header offsets.
50    pointer_offset_ = BIONIC_ALIGN(sizeof(Header), MINIMUM_ALIGNMENT_BYTES);
51
52    if (config_.options & BACKTRACE) {
53      backtrace.reset(new BacktraceData(config_, &pointer_offset_));
54      if (!backtrace->Initialize(config_)) {
55        return false;
56      }
57    }
58
59    if (config_.options & FRONT_GUARD) {
60      front_guard.reset(new FrontGuardData(config_, &pointer_offset_));
61    }
62
63    extra_bytes_ = pointer_offset_;
64
65    // Initialize all of the non-header data.
66    if (config_.options & REAR_GUARD) {
67      rear_guard.reset(new RearGuardData(config_));
68      extra_bytes_ += config_.rear_guard_bytes;
69    }
70
71    if (config_.options & FREE_TRACK) {
72      free_track.reset(new FreeTrackData(config_));
73    }
74
75    if (config_.options & TRACK_ALLOCS) {
76      track.reset(new TrackData());
77    }
78  }
79
80  if (config_.options & EXPAND_ALLOC) {
81    extra_bytes_ += config_.expand_alloc_bytes;
82  }
83  return true;
84}
85
86void DebugData::PrepareFork() {
87  if (track != nullptr) {
88    track->PrepareFork();
89  }
90}
91
92void DebugData::PostForkParent() {
93  if (track != nullptr) {
94    track->PostForkParent();
95  }
96}
97
98void DebugData::PostForkChild() {
99  if (track != nullptr) {
100    track->PostForkChild();
101  }
102}
103