Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
[firefly-linux-kernel-4.4.55.git] / tools / lib / lockdep / include / liblockdep / mutex.h
1 #ifndef _LIBLOCKDEP_MUTEX_H
2 #define _LIBLOCKDEP_MUTEX_H
3
4 #include <pthread.h>
5 #include "common.h"
6
7 struct liblockdep_pthread_mutex {
8         pthread_mutex_t mutex;
9         struct lockdep_map dep_map;
10 };
11
12 typedef 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
20 static 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
36 static 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
42 static 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
48 static 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
54 static 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