1#ifndef _LIBLOCKDEP_RWLOCK_H
 2#define _LIBLOCKDEP_RWLOCK_H
 3
 4#include <pthread.h>
 5#include "common.h"
 6
 7struct liblockdep_pthread_rwlock {
 8	pthread_rwlock_t rwlock;
 9	struct lockdep_map dep_map;
10};
11
12typedef struct liblockdep_pthread_rwlock liblockdep_pthread_rwlock_t;
13
14#define LIBLOCKDEP_PTHREAD_RWLOCK_INITIALIZER(rwl)			\
15		(struct liblockdep_pthread_rwlock) {			\
16	.rwlock = PTHREAD_RWLOCK_INITIALIZER,				\
17	.dep_map = STATIC_LOCKDEP_MAP_INIT(#rwl, &((&(rwl))->dep_map)),	\
18}
19
20static inline int __rwlock_init(liblockdep_pthread_rwlock_t *lock,
21				const char *name,
22				struct lock_class_key *key,
23				const pthread_rwlockattr_t *attr)
24{
25	lockdep_init_map(&lock->dep_map, name, key, 0);
26
27	return pthread_rwlock_init(&lock->rwlock, attr);
28}
29
30#define liblockdep_pthread_rwlock_init(lock, attr)		\
31({							\
32	static struct lock_class_key __key;		\
33							\
34	__rwlock_init((lock), #lock, &__key, (attr));	\
35})
36
37static inline int liblockdep_pthread_rwlock_rdlock(liblockdep_pthread_rwlock_t *lock)
38{
39	lock_acquire(&lock->dep_map, 0, 0, 2, 2, NULL, (unsigned long)_RET_IP_);
40	return pthread_rwlock_rdlock(&lock->rwlock);
41
42}
43
44static inline int liblockdep_pthread_rwlock_unlock(liblockdep_pthread_rwlock_t *lock)
45{
46	lock_release(&lock->dep_map, 0, (unsigned long)_RET_IP_);
47	return pthread_rwlock_unlock(&lock->rwlock);
48}
49
50static inline int liblockdep_pthread_rwlock_wrlock(liblockdep_pthread_rwlock_t *lock)
51{
52	lock_acquire(&lock->dep_map, 0, 0, 0, 2, NULL, (unsigned long)_RET_IP_);
53	return pthread_rwlock_wrlock(&lock->rwlock);
54}
55
56static inline int liblockdep_pthread_rwlock_tryrdlock(liblockdep_pthread_rwlock_t *lock)
57{
58	lock_acquire(&lock->dep_map, 0, 1, 2, 2, NULL, (unsigned long)_RET_IP_);
59	return pthread_rwlock_tryrdlock(&lock->rwlock) == 0 ? 1 : 0;
60}
61
62static inline int liblockdep_pthread_rwlock_trywlock(liblockdep_pthread_rwlock_t *lock)
63{
64	lock_acquire(&lock->dep_map, 0, 1, 0, 2, NULL, (unsigned long)_RET_IP_);
65	return pthread_rwlock_trywlock(&lock->rwlock) == 0 ? 1 : 0;
66}
67
68static inline int liblockdep_rwlock_destroy(liblockdep_pthread_rwlock_t *lock)
69{
70	return pthread_rwlock_destroy(&lock->rwlock);
71}
72
73#ifdef __USE_LIBLOCKDEP
74
75#define pthread_rwlock_t		liblockdep_pthread_rwlock_t
76#define pthread_rwlock_init		liblockdep_pthread_rwlock_init
77#define pthread_rwlock_rdlock		liblockdep_pthread_rwlock_rdlock
78#define pthread_rwlock_unlock		liblockdep_pthread_rwlock_unlock
79#define pthread_rwlock_wrlock		liblockdep_pthread_rwlock_wrlock
80#define pthread_rwlock_tryrdlock	liblockdep_pthread_rwlock_tryrdlock
81#define pthread_rwlock_trywlock		liblockdep_pthread_rwlock_trywlock
82#define pthread_rwlock_destroy		liblockdep_rwlock_destroy
83
84#endif
85
86#endif