kernel/tools/lib/lockdep/include/liblockdep/rwlock.h

   1 #ifndef _LIBLOCKDEP_RWLOCK_H
   2 #define _LIBLOCKDEP_RWLOCK_H
   3
   4 #include <pthread.h>
   5 #include "common.h"
   6
   7 struct liblockdep_pthread_rwlock {
   8         pthread_rwlock_t rwlock;
   9         struct lockdep_map dep_map;
  10 };
  11
  12 typedef 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
  20 static 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
  37 static inline int liblockdep_pthread_rwlock_rdlock(liblockdep_pthread_rwlock_t *lock)
  38 {
  39         lock_acquire(&lock->dep_map, 0, 0, 2, 1, NULL, (unsigned long)_RET_IP_);
  40         return pthread_rwlock_rdlock(&lock->rwlock);
  41
  42 }
  43
  44 static 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
  50 static inline int liblockdep_pthread_rwlock_wrlock(liblockdep_pthread_rwlock_t *lock)
  51 {
  52         lock_acquire(&lock->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_);
  53         return pthread_rwlock_wrlock(&lock->rwlock);
  54 }
  55
  56 static inline int liblockdep_pthread_rwlock_tryrdlock(liblockdep_pthread_rwlock_t *lock)
  57 {
  58         lock_acquire(&lock->dep_map, 0, 1, 2, 1, NULL, (unsigned long)_RET_IP_);
  59         return pthread_rwlock_tryrdlock(&lock->rwlock) == 0 ? 1 : 0;
  60 }
  61
  62 static inline int liblockdep_pthread_rwlock_trywlock(liblockdep_pthread_rwlock_t *lock)
  63 {
  64         lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_);
  65         return pthread_rwlock_trywlock(&lock->rwlock) == 0 ? 1 : 0;
  66 }
  67
  68 static 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