100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#pragma once
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#include <stdint.h>
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#include <memory>
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#include <vector>
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#include <platform/bionic/macros.h>
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#include "Config.h"
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#include "GuardData.h"
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#include "PointerData.h"
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#include "RecordData.h"
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#include "malloc_debug.h"
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class DebugData {
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public:
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DebugData() = default;
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~DebugData() = default;
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bool Initialize(const char* options);
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static bool Disabled();
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inline void* GetPointer(const Header* header) {
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uintptr_t value = reinterpret_cast<uintptr_t>(header);
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return reinterpret_cast<void*>(value + pointer_offset_);
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}
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Header* GetHeader(const void* pointer) {
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uintptr_t value = reinterpret_cast<uintptr_t>(pointer);
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return reinterpret_cast<Header*>(value - pointer_offset_);
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}
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uint8_t* GetFrontGuard(const Header* header) {
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uintptr_t value = reinterpret_cast<uintptr_t>(header);
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return reinterpret_cast<uint8_t*>(value + front_guard->offset());
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}
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uint8_t* GetRearGuard(const Header* header) {
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uintptr_t value = reinterpret_cast<uintptr_t>(GetPointer(header));
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return reinterpret_cast<uint8_t*>(value + header->size);
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}
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const Config& config() { return config_; }
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size_t pointer_offset() { return pointer_offset_; }
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size_t extra_bytes() { return extra_bytes_; }
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bool TrackPointers() { return config_.options() & TRACK_ALLOCS; }
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bool HeaderEnabled() { return config_.options() & HEADER_OPTIONS; }
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void PrepareFork();
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void PostForkParent();
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void PostForkChild();
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std::unique_ptr<FrontGuardData> front_guard;
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std::unique_ptr<PointerData> pointer;
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std::unique_ptr<RearGuardData> rear_guard;
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std::unique_ptr<RecordData> record;
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private:
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size_t extra_bytes_ = 0;
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size_t pointer_offset_ = 0;
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Config config_;
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BIONIC_DISALLOW_COPY_AND_ASSIGN(DebugData);
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};
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extern DebugData* g_debug;
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