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, 2, 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, 2, 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