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 "Config.h"
32 #include "DebugData.h"
33 #include "GuardData.h"
34 #include "PointerData.h"
35 #include "debug_disable.h"
36 #include "malloc_debug.h"
37
Initialize(const char * options)38 bool DebugData::Initialize(const char* options) {
39 if (!config_.Init(options)) {
40 return false;
41 }
42
43 // Check to see if the options that require a header are enabled.
44 if (config_.options() & HEADER_OPTIONS) {
45 // Initialize all of the static header offsets.
46 pointer_offset_ = __BIONIC_ALIGN(sizeof(Header), MINIMUM_ALIGNMENT_BYTES);
47
48 if (config_.options() & FRONT_GUARD) {
49 front_guard.reset(new FrontGuardData(this, config_, &pointer_offset_));
50 }
51
52 extra_bytes_ = pointer_offset_;
53
54 // Initialize all of the non-header data.
55 if (config_.options() & REAR_GUARD) {
56 rear_guard.reset(new RearGuardData(this, config_));
57 extra_bytes_ += config_.rear_guard_bytes();
58 }
59 }
60
61 if (TrackPointers()) {
62 pointer.reset(new PointerData(this));
63 if (!pointer->Initialize(config_)) {
64 return false;
65 }
66 }
67
68 if (config_.options() & RECORD_ALLOCS) {
69 record.reset(new RecordData());
70 if (!record->Initialize(config_)) {
71 return false;
72 }
73 }
74
75 if (config_.options() & EXPAND_ALLOC) {
76 extra_bytes_ += config_.expand_alloc_bytes();
77 }
78 return true;
79 }
80
PrepareFork()81 void DebugData::PrepareFork() {
82 if (pointer != nullptr) {
83 pointer->PrepareFork();
84 }
85 }
86
PostForkParent()87 void DebugData::PostForkParent() {
88 if (pointer != nullptr) {
89 pointer->PostForkParent();
90 }
91 }
92
PostForkChild()93 void DebugData::PostForkChild() {
94 if (pointer != nullptr) {
95 pointer->PostForkChild();
96 }
97 }
98