783dd0df06f9b1a4f89cf992c0aea7ee8ac61b4d
[sfrench/cifs-2.6.git] / tools / lib / lockdep / include / liblockdep / mutex.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LIBLOCKDEP_MUTEX_H
3 #define _LIBLOCKDEP_MUTEX_H
4
5 #include <pthread.h>
6 #include "common.h"
7
8 struct liblockdep_pthread_mutex {
9         pthread_mutex_t mutex;
10         struct lock_class_key key;
11         struct lockdep_map dep_map;
12 };
13
14 typedef struct liblockdep_pthread_mutex liblockdep_pthread_mutex_t;
15
16 #define LIBLOCKDEP_PTHREAD_MUTEX_INITIALIZER(mtx)                       \
17                 (const struct liblockdep_pthread_mutex) {               \
18         .mutex = PTHREAD_MUTEX_INITIALIZER,                             \
19         .dep_map = STATIC_LOCKDEP_MAP_INIT(#mtx, &((&(mtx))->dep_map)), \
20 }
21
22 static inline int __mutex_init(liblockdep_pthread_mutex_t *lock,
23                                 const char *name,
24                                 struct lock_class_key *key,
25                                 const pthread_mutexattr_t *__mutexattr)
26 {
27         lockdep_init_map(&lock->dep_map, name, key, 0);
28         return pthread_mutex_init(&lock->mutex, __mutexattr);
29 }
30
31 #define liblockdep_pthread_mutex_init(mutex, mutexattr)                 \
32 ({                                                                      \
33         lockdep_register_key(&(mutex)->key);                            \
34         __mutex_init((mutex), #mutex, &(mutex)->key, (mutexattr));      \
35 })
36
37 static inline int liblockdep_pthread_mutex_lock(liblockdep_pthread_mutex_t *lock)
38 {
39         lock_acquire(&lock->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_);
40         return pthread_mutex_lock(&lock->mutex);
41 }
42
43 static inline int liblockdep_pthread_mutex_unlock(liblockdep_pthread_mutex_t *lock)
44 {
45         lock_release(&lock->dep_map, 0, (unsigned long)_RET_IP_);
46         return pthread_mutex_unlock(&lock->mutex);
47 }
48
49 static inline int liblockdep_pthread_mutex_trylock(liblockdep_pthread_mutex_t *lock)
50 {
51         lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_);
52         return pthread_mutex_trylock(&lock->mutex) == 0 ? 1 : 0;
53 }
54
55 static inline int liblockdep_pthread_mutex_destroy(liblockdep_pthread_mutex_t *lock)
56 {
57         lockdep_reset_lock(&lock->dep_map);
58         lockdep_unregister_key(&lock->key);
59         return pthread_mutex_destroy(&lock->mutex);
60 }
61
62 #ifdef __USE_LIBLOCKDEP
63
64 #define pthread_mutex_t         liblockdep_pthread_mutex_t
65 #define pthread_mutex_init      liblockdep_pthread_mutex_init
66 #define pthread_mutex_lock      liblockdep_pthread_mutex_lock
67 #define pthread_mutex_unlock    liblockdep_pthread_mutex_unlock
68 #define pthread_mutex_trylock   liblockdep_pthread_mutex_trylock
69 #define pthread_mutex_destroy   liblockdep_pthread_mutex_destroy
70
71 #endif
72
73 #endif