locking.h

   1 #ifndef LOCKING_H
   2 #define LOCKING_H
   3
   4 #include <pthread.h>
   5
   6 struct spinlock {
   7         pthread_spinlock_t lock;
   8 };
   9
  10 struct mutexlock {
  11         pthread_mutex_t lock;
  12 };
  13
  14 #define MUTEXLOCK_INITIALIZER { .lock = PTHREAD_MUTEX_INITIALIZER }
  15
  16 struct rwlock {
  17         pthread_rwlock_t lock;
  18 };
  19
  20 static inline int spinlock_init(struct spinlock *l)
  21 {
  22         return -pthread_spin_init(&l->lock, 0);
  23 }
  24
  25 static inline void spinlock_destroy(struct spinlock *l)
  26 {
  27         pthread_spin_destroy(&l->lock);
  28 }
  29
  30 static inline void spinlock_lock(struct spinlock *l)
  31 {
  32         pthread_spin_lock(&l->lock);
  33 }
  34
  35 static inline void spinlock_unlock(struct spinlock *l)
  36 {
  37         pthread_spin_unlock(&l->lock);
  38 }
  39
  40 static inline int mutexlock_init(struct mutexlock *l)
  41 {
  42         return -pthread_mutex_init(&l->lock, 0);
  43 }
  44
  45 static inline void mutexlock_destroy(struct mutexlock *l)
  46 {
  47         pthread_mutex_destroy(&l->lock);
  48 }
  49
  50 static inline void mutexlock_lock(struct mutexlock *l)
  51 {
  52         pthread_mutex_lock(&l->lock);
  53 }
  54
  55 static inline void mutexlock_unlock(struct mutexlock *l)
  56 {
  57         pthread_mutex_unlock(&l->lock);
  58 }
  59
  60 static inline int rwlock_init(struct rwlock *l)
  61 {
  62         return -pthread_rwlock_init(&l->lock, 0);
  63 }
  64
  65 static inline int rwlock_init2(struct rwlock *l,
  66                                pthread_rwlockattr_t *attr)
  67 {
  68         return -pthread_rwlock_init(&l->lock, attr);
  69 }
  70
  71 static inline void rwlock_destroy(struct rwlock *l)
  72 {
  73         pthread_rwlock_destroy(&l->lock);
  74 }
  75
  76 static inline void rwlock_rd_lock(struct rwlock *l)
  77 {
  78         pthread_rwlock_rdlock(&l->lock);
  79 }
  80
  81 static inline void rwlock_wr_lock(struct rwlock *l)
  82 {
  83         pthread_rwlock_wrlock(&l->lock);
  84 }
  85
  86 static inline void rwlock_unlock(struct rwlock *l)
  87 {
  88         pthread_rwlock_unlock(&l->lock);
  89 }
  90
  91 #endif /* LOCKING_H */