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 lockdep_map dep_map;
11 };
12
13 typedef struct liblockdep_pthread_mutex liblockdep_pthread_mutex_t;
14
15 #define LIBLOCKDEP_PTHREAD_MUTEX_INITIALIZER(mtx) \
16 (const struct liblockdep_pthread_mutex) { \
17 .mutex = PTHREAD_MUTEX_INITIALIZER, \
18 .dep_map = STATIC_LOCKDEP_MAP_INIT(#mtx, &((&(mtx))->dep_map)), \
19 }
20
__mutex_init(liblockdep_pthread_mutex_t * lock,const char * name,struct lock_class_key * key,const pthread_mutexattr_t * __mutexattr)21 static inline int __mutex_init(liblockdep_pthread_mutex_t *lock,
22 const char *name,
23 struct lock_class_key *key,
24 const pthread_mutexattr_t *__mutexattr)
25 {
26 lockdep_init_map(&lock->dep_map, name, key, 0);
27 return pthread_mutex_init(&lock->mutex, __mutexattr);
28 }
29
30 #define liblockdep_pthread_mutex_init(mutex, mutexattr) \
31 ({ \
32 static struct lock_class_key __key; \
33 \
34 __mutex_init((mutex), #mutex, &__key, (mutexattr)); \
35 })
36
liblockdep_pthread_mutex_lock(liblockdep_pthread_mutex_t * lock)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
liblockdep_pthread_mutex_unlock(liblockdep_pthread_mutex_t * lock)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
liblockdep_pthread_mutex_trylock(liblockdep_pthread_mutex_t * lock)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
liblockdep_pthread_mutex_destroy(liblockdep_pthread_mutex_t * lock)55 static inline int liblockdep_pthread_mutex_destroy(liblockdep_pthread_mutex_t *lock)
56 {
57 return pthread_mutex_destroy(&lock->mutex);
58 }
59
60 #ifdef __USE_LIBLOCKDEP
61
62 #define pthread_mutex_t liblockdep_pthread_mutex_t
63 #define pthread_mutex_init liblockdep_pthread_mutex_init
64 #define pthread_mutex_lock liblockdep_pthread_mutex_lock
65 #define pthread_mutex_unlock liblockdep_pthread_mutex_unlock
66 #define pthread_mutex_trylock liblockdep_pthread_mutex_trylock
67 #define pthread_mutex_destroy liblockdep_pthread_mutex_destroy
68
69 #endif
70
71 #endif
72
