55a89a48f4
- Move all ScopedDisableDebugCalls into the debug_XXX calls. This avoids any issues that might arise where every part of the code needs to properly guard anything that might allocate. Instead everything is already guarded. - Add a pointer to debug_data in all of the XXData classes. This avoids calling individual functions passing in the debug_data pointer. - Flip the NO_HEADER_OPTIONS to an explicit HEADER_OPTIONS list since fewer options actually require a header. - Move the extern of g_debug to the DebugData.h header. Change-Id: Ia213a391b4a44d9ce122a709d09fe4f1b5426f36
108 lines
3.4 KiB
C++
108 lines
3.4 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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#ifndef DEBUG_MALLOC_DEBUGDATA_H
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#define DEBUG_MALLOC_DEBUGDATA_H
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#include <stdint.h>
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#include <memory>
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#include <vector>
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#include <private/bionic_macros.h>
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#include "BacktraceData.h"
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#include "Config.h"
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#include "FreeTrackData.h"
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#include "GuardData.h"
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#include "malloc_debug.h"
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#include "TrackData.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();
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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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BacktraceHeader* GetAllocBacktrace(const Header* header) {
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uintptr_t value = reinterpret_cast<uintptr_t>(header);
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return reinterpret_cast<BacktraceHeader*>(value + backtrace->alloc_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->real_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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bool need_header() { return need_header_; }
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size_t extra_bytes() { return extra_bytes_; }
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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<BacktraceData> backtrace;
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std::unique_ptr<TrackData> track;
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std::unique_ptr<FrontGuardData> front_guard;
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std::unique_ptr<RearGuardData> rear_guard;
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std::unique_ptr<FreeTrackData> free_track;
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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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bool need_header_ = false;
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Config config_;
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DISALLOW_COPY_AND_ASSIGN(DebugData);
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};
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extern DebugData* g_debug;
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#endif // MALLOC_DEBUG_DEBUGDATA_H
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