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 struct condlock {
  21         pthread_mutex_t lock;
  22         pthread_cond_t cond;
  23 };
  24
  25 static inline int spinlock_init(struct spinlock *l)
  26 {
  27         return -pthread_spin_init(&l->lock, 0);
  28 }
  29
  30 static inline void spinlock_destroy(struct spinlock *l)
  31 {
  32         pthread_spin_destroy(&l->lock);
  33 }
  34
  35 static inline void spinlock_lock(struct spinlock *l)
  36 {
  37         pthread_spin_lock(&l->lock);
  38 }
  39
  40 static inline void spinlock_unlock(struct spinlock *l)
  41 {
  42         pthread_spin_unlock(&l->lock);
  43 }
  44
  45 static inline int mutexlock_init(struct mutexlock *l)
  46 {
  47         return -pthread_mutex_init(&l->lock, 0);
  48 }
  49
  50 static inline void mutexlock_destroy(struct mutexlock *l)
  51 {
  52         pthread_mutex_destroy(&l->lock);
  53 }
  54
  55 static inline void mutexlock_lock(struct mutexlock *l)
  56 {
  57         pthread_mutex_lock(&l->lock);
  58 }
  59
  60 static inline void mutexlock_unlock(struct mutexlock *l)
  61 {
  62         pthread_mutex_unlock(&l->lock);
  63 }
  64
  65 static inline int rwlock_init(struct rwlock *l)
  66 {
  67         return -pthread_rwlock_init(&l->lock, 0);
  68 }
  69
  70 static inline int rwlock_init2(struct rwlock *l,
  71                                pthread_rwlockattr_t *attr)
  72 {
  73         return -pthread_rwlock_init(&l->lock, attr);
  74 }
  75
  76 static inline void rwlock_destroy(struct rwlock *l)
  77 {
  78         pthread_rwlock_destroy(&l->lock);
  79 }
  80
  81 static inline void rwlock_rd_lock(struct rwlock *l)
  82 {
  83         pthread_rwlock_rdlock(&l->lock);
  84 }
  85
  86 static inline void rwlock_wr_lock(struct rwlock *l)
  87 {
  88         pthread_rwlock_wrlock(&l->lock);
  89 }
  90
  91 static inline void rwlock_unlock(struct rwlock *l)
  92 {
  93         pthread_rwlock_unlock(&l->lock);
  94 }
  95
  96 static inline void condlock_init(struct condlock *c)
  97 {
  98         pthread_mutex_init(&c->lock, NULL);
  99         pthread_cond_init(&c->cond, NULL);
 100 }
 101
 102 static inline void condlock_signal(struct condlock *c)
 103 {
 104         pthread_mutex_lock(&c->lock);
 105         pthread_cond_signal(&c->cond);
 106         pthread_mutex_unlock(&c->lock);
 107 }
 108
 109 static inline void condlock_wait(struct condlock *c)
 110 {
 111         pthread_mutex_lock(&c->lock);
 112         pthread_cond_wait(&c->cond, &c->lock);
 113         pthread_mutex_unlock(&c->lock);
 114 }
 115
 116 static inline void condlock_destroy(struct condlock *c)
 117 {
 118         pthread_mutex_destroy(&c->lock);
 119         pthread_cond_destroy(&c->cond);
 120 }
 121
 122 #endif /* LOCKING_H */