aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.8/libsanitizer/tsan/tsan_mutex.h
blob: 6d1450593301d6bd0129b855d48ad38154563f19 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
//===-- tsan_mutex.h --------------------------------------------*- C++ -*-===//
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer (TSan), a race detector.
//
//===----------------------------------------------------------------------===//
#ifndef TSAN_MUTEX_H
#define TSAN_MUTEX_H

#include "sanitizer_common/sanitizer_atomic.h"
#include "sanitizer_common/sanitizer_mutex.h"
#include "tsan_defs.h"

namespace __tsan {

enum MutexType {
  MutexTypeInvalid,
  MutexTypeTrace,
  MutexTypeThreads,
  MutexTypeReport,
  MutexTypeSyncVar,
  MutexTypeSyncTab,
  MutexTypeSlab,
  MutexTypeAnnotations,
  MutexTypeAtExit,
  MutexTypeMBlock,
  MutexTypeJavaMBlock,

  // This must be the last.
  MutexTypeCount
};

class Mutex {
 public:
  explicit Mutex(MutexType type, StatType stat_type);
  ~Mutex();

  void Lock();
  void Unlock();

  void ReadLock();
  void ReadUnlock();

  void CheckLocked();

 private:
  atomic_uintptr_t state_;
#if TSAN_DEBUG
  MutexType type_;
#endif
#if TSAN_COLLECT_STATS
  StatType stat_type_;
#endif

  Mutex(const Mutex&);
  void operator = (const Mutex&);
};

typedef GenericScopedLock<Mutex> Lock;
typedef GenericScopedReadLock<Mutex> ReadLock;

class DeadlockDetector {
 public:
  DeadlockDetector();
  void Lock(MutexType t);
  void Unlock(MutexType t);
 private:
  u64 seq_;
  u64 locked_[MutexTypeCount];
};

void InitializeMutex();

}  // namespace __tsan

#endif  // TSAN_MUTEX_H