tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
8struct liblockdep_pthread_mutex {
9 pthread_mutex_t mutex;
10 struct lockdep_map dep_map;
11};
12
13typedef 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
21static 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
37static 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
43static 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
49static 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
55static 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