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/*
* Copyright (C) 2015 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#pragma once
#include <stdint.h>
#include <pthread.h>
#include <deque>
#include <unordered_map>
#include <vector>
#include <private/bionic_macros.h>
#include "OptionData.h"
// Forward declarations.
struct BacktraceHeader;
class Config;
class DebugData;
struct Header;
class FreeTrackData : public OptionData {
public:
FreeTrackData(DebugData* debug_data, const Config& config);
virtual ~FreeTrackData() = default;
void Add(const Header* header);
void VerifyAll();
void LogBacktrace(const Header* header);
void PrepareFork() { pthread_mutex_lock(&mutex_); }
void PostForkParent() { pthread_mutex_unlock(&mutex_); }
void PostForkChild() { pthread_mutex_init(&mutex_, NULL); }
private:
void LogFreeError(const Header* header, const uint8_t* pointer);
void VerifyAndFree(const Header* header);
pthread_mutex_t mutex_ = PTHREAD_MUTEX_INITIALIZER;
std::deque<const Header*> list_;
std::vector<uint8_t> cmp_mem_;
std::unordered_map<const Header*, BacktraceHeader*> backtraces_;
size_t backtrace_num_frames_;
DISALLOW_COPY_AND_ASSIGN(FreeTrackData);
};
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