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