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 struct rwlock {
  15         pthread_rwlock_t lock;
  16 };
  17
  18 struct condlock {
  19         pthread_mutex_t lock;
  20         pthread_cond_t cond;
  21 };
  22
  23 static inline int spinlock_init(struct spinlock *l)
  24 {
  25         return -pthread_spin_init(&l->lock, 0);
  26 }
  27
  28 static inline void spinlock_destroy(struct spinlock *l)
  29 {
  30         pthread_spin_destroy(&l->lock);
  31 }
  32
  33 static inline void spinlock_lock(struct spinlock *l)
  34 {
  35         pthread_spin_lock(&l->lock);
  36 }
  37
  38 static inline void spinlock_unlock(struct spinlock *l)
  39 {
  40         pthread_spin_unlock(&l->lock);
  41 }
  42
  43 static inline int mutexlock_init(struct mutexlock *l)
  44 {
  45         return -pthread_mutex_init(&l->lock, 0);
  46 }
  47
  48 static inline void mutexlock_destroy(struct mutexlock *l)
  49 {
  50         pthread_mutex_destroy(&l->lock);
  51 }
  52
  53 static inline void mutexlock_lock(struct mutexlock *l)
  54 {
  55         pthread_mutex_lock(&l->lock);
  56 }
  57
  58 static inline void mutexlock_unlock(struct mutexlock *l)
  59 {
  60         pthread_mutex_unlock(&l->lock);
  61 }
  62
  63 static inline int rwlock_init(struct rwlock *l)
  64 {
  65         return -pthread_rwlock_init(&l->lock, 0);
  66 }
  67
  68 static inline int rwlock_init2(struct rwlock *l,
  69                                pthread_rwlockattr_t *attr)
  70 {
  71         return -pthread_rwlock_init(&l->lock, attr);
  72 }
  73
  74 static inline void rwlock_destroy(struct rwlock *l)
  75 {
  76         pthread_rwlock_destroy(&l->lock);
  77 }
  78
  79 static inline void rwlock_rd_lock(struct rwlock *l)
  80 {
  81         pthread_rwlock_rdlock(&l->lock);
  82 }
  83
  84 static inline void rwlock_wr_lock(struct rwlock *l)
  85 {
  86         pthread_rwlock_wrlock(&l->lock);
  87 }
  88
  89 static inline void rwlock_unlock(struct rwlock *l)
  90 {
  91         pthread_rwlock_unlock(&l->lock);
  92 }
  93
  94 static inline void condlock_init(struct condlock *c)
  95 {
  96         pthread_mutex_init(&c->lock, NULL);
  97         pthread_cond_init(&c->cond, NULL);
  98 }
  99
 100 static inline void condlock_signal(struct condlock *c)
 101 {
 102         pthread_mutex_lock(&c->lock);
 103         pthread_cond_signal(&c->cond);
 104         pthread_mutex_unlock(&c->lock);
 105 }
 106
 107 static inline void condlock_wait(struct condlock *c)
 108 {
 109         pthread_mutex_lock(&c->lock);
 110         pthread_cond_wait(&c->cond, &c->lock);
 111         pthread_mutex_unlock(&c->lock);
 112 }
 113
 114 static inline void condlock_destroy(struct condlock *c)
 115 {
 116         pthread_mutex_destroy(&c->lock);
 117         pthread_cond_destroy(&c->cond);
 118 }
 119
 120 #endif /* LOCKING_H */