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_TRACKDATA_H
30#define DEBUG_MALLOC_TRACKDATA_H
31
32#include <stdint.h>
33#include <pthread.h>
34
35#include <vector>
36#include <unordered_set>
37
38#include <private/bionic_macros.h>
39
40// Forward declarations.
41struct Header;
42struct Config;
43class DebugData;
44
45class TrackData {
46 public:
47  TrackData() = default;
48  virtual ~TrackData() = default;
49
50  void GetList(std::vector<const Header*>* list);
51
52  void Add(const Header* header, bool backtrace_found);
53
54  void Remove(const Header* header, bool backtrace_found);
55
56  bool Contains(const Header *header);
57
58  void GetInfo(DebugData& debug, uint8_t** info, size_t* overall_size,
59               size_t* info_size, size_t* total_memory, size_t* backtrace_size);
60
61  void DisplayLeaks(DebugData& debug);
62
63  void PrepareFork() { pthread_mutex_lock(&mutex_); }
64  void PostForkParent() { pthread_mutex_unlock(&mutex_); }
65  void PostForkChild() { pthread_mutex_init(&mutex_, NULL); }
66
67 private:
68  pthread_mutex_t mutex_ = PTHREAD_MUTEX_INITIALIZER;
69  std::unordered_set<const Header*> headers_;
70  size_t total_backtrace_allocs_ = 0;
71
72  DISALLOW_COPY_AND_ASSIGN(TrackData);
73};
74
75#endif // DEBUG_MALLOC_TRACKDATA_H
76