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
Initialize(const char * options)40 bool DebugData::Initialize(const char* options) {
41 if (!config_.Set(options)) {
42 return false;
43 }
44
45 // Check to see if the options that require a header are enabled.
46 if (config_.options & HEADER_OPTIONS) {
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(this, 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(this, 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(this, config_));
68 extra_bytes_ += config_.rear_guard_bytes;
69 }
70
71 if (config_.options & FREE_TRACK) {
72 free_track.reset(new FreeTrackData(this, config_));
73 }
74
75 if (config_.options & TRACK_ALLOCS) {
76 track.reset(new TrackData(this));
77 }
78 }
79
80 if (config_.options & RECORD_ALLOCS) {
81 record.reset(new RecordData());
82 if (!record->Initialize(config_)) {
83 return false;
84 }
85 }
86
87 if (config_.options & EXPAND_ALLOC) {
88 extra_bytes_ += config_.expand_alloc_bytes;
89 }
90 return true;
91 }
92
PrepareFork()93 void DebugData::PrepareFork() {
94 if (track != nullptr) {
95 track->PrepareFork();
96 }
97 }
98
PostForkParent()99 void DebugData::PostForkParent() {
100 if (track != nullptr) {
101 track->PostForkParent();
102 }
103 }
104
PostForkChild()105 void DebugData::PostForkChild() {
106 if (track != nullptr) {
107 track->PostForkChild();
108 }
109 }
110