7993b80f89
Included in this change: - Change the tag when a pointer is freed so it's easy to detect if an already freed pointer is being used. - Move the free backtrace out of the header. This backtrace is only used under only some circumstances, so no need to allocate space in all headers for it. - Add new option free_track_backtrace_num_frames to specify how many frames to record when the free occurs. This removes the dependency on the backtrace option to get backtraces. Bug: 26739265 Change-Id: I76f5209507dcf46af67ada162a7cb2bf282116f2
71 lines
2.4 KiB
C++
71 lines
2.4 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_FREETRACKDATA_H
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#define DEBUG_MALLOC_FREETRACKDATA_H
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#include <stdint.h>
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#include <pthread.h>
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#include <deque>
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#include <unordered_map>
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#include <vector>
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#include <private/bionic_macros.h>
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// Forward declarations.
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struct Header;
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class DebugData;
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struct Config;
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struct BacktraceHeader;
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class FreeTrackData {
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public:
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FreeTrackData(const Config& config);
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virtual ~FreeTrackData() = default;
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void Add(DebugData& debug, const Header* header);
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void VerifyAll(DebugData& debug);
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void LogBacktrace(const Header* header);
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private:
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void LogFreeError(DebugData& debug, const Header* header, const uint8_t* pointer);
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void VerifyAndFree(DebugData& debug, const Header* header, const void* pointer);
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pthread_mutex_t mutex_ = PTHREAD_MUTEX_INITIALIZER;
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std::deque<const Header*> list_;
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std::vector<uint8_t> cmp_mem_;
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std::unordered_map<const Header*, BacktraceHeader*> backtraces_;
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size_t backtrace_num_frames_;
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DISALLOW_COPY_AND_ASSIGN(FreeTrackData);
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};
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#endif // DEBUG_MALLOC_FREETRACKDATA_H
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