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