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#ifndef DEBUG_MALLOC_FREETRACKDATA_H
30#define DEBUG_MALLOC_FREETRACKDATA_H
31
32#include <stdint.h>
33#include <pthread.h>
34
35#include <deque>
36#include <unordered_map>
37#include <vector>
38
39#include <private/bionic_macros.h>
40
41// Forward declarations.
42struct Header;
43class DebugData;
44struct Config;
45struct BacktraceHeader;
46
47class FreeTrackData {
48 public:
49  FreeTrackData(const Config& config);
50  virtual ~FreeTrackData() = default;
51
52  void Add(DebugData& debug, const Header* header);
53
54  void VerifyAll(DebugData& debug);
55
56  void LogBacktrace(const Header* header);
57
58 private:
59  void LogFreeError(DebugData& debug, const Header* header, const uint8_t* pointer);
60  void VerifyAndFree(DebugData& debug, const Header* header, const void* pointer);
61
62  pthread_mutex_t mutex_ = PTHREAD_MUTEX_INITIALIZER;
63  std::deque<const Header*> list_;
64  std::vector<uint8_t> cmp_mem_;
65  std::unordered_map<const Header*, BacktraceHeader*> backtraces_;
66  size_t backtrace_num_frames_;
67
68  DISALLOW_COPY_AND_ASSIGN(FreeTrackData);
69};
70
71#endif // DEBUG_MALLOC_FREETRACKDATA_H
72