locking.h

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2011 Daniel Borkmann.
   5  * Subject to the GPL, version 2.
   6  */
   7
   8 #ifndef LOCKING_H
   9 #define LOCKING_H
  10
  11 #include <pthread.h>
  12
  13 #include "built_in.h"
  14
  15 struct spinlock {
  16         pthread_spinlock_t lock;
  17 };
  18
  19 struct mutexlock {
  20         pthread_mutex_t lock;
  21 };
  22
  23 struct rwlock {
  24         pthread_rwlock_t lock;
  25 };
  26
  27 static inline int spinlock_init(struct spinlock *l)
  28 {
  29         return -pthread_spin_init(&l->lock, 0);
  30 }
  31
  32 static inline void spinlock_destroy(struct spinlock *l)
  33 {
  34         pthread_spin_destroy(&l->lock);
  35 }
  36
  37 static inline void spinlock_lock(struct spinlock *l)
  38 {
  39         pthread_spin_lock(&l->lock);
  40 }
  41
  42 static inline void spinlock_unlock(struct spinlock *l)
  43 {
  44         pthread_spin_unlock(&l->lock);
  45 }
  46
  47 static inline int mutexlock_init(struct mutexlock *l)
  48 {
  49         return -pthread_mutex_init(&l->lock, 0);
  50 }
  51
  52 static inline void mutexlock_destroy(struct mutexlock *l)
  53 {
  54         pthread_mutex_destroy(&l->lock);
  55 }
  56
  57 static inline void mutexlock_lock(struct mutexlock *l)
  58 {
  59         pthread_mutex_lock(&l->lock);
  60 }
  61
  62 static inline void mutexlock_unlock(struct mutexlock *l)
  63 {
  64         pthread_mutex_unlock(&l->lock);
  65 }
  66
  67 static inline int rwlock_init(struct rwlock *l)
  68 {
  69         return -pthread_rwlock_init(&l->lock, 0);
  70 }
  71
  72 static inline int rwlock_init2(struct rwlock *l,
  73                         pthread_rwlockattr_t *restrict attr)
  74 {
  75         return -pthread_rwlock_init(&l->lock, attr);
  76 }
  77
  78 static inline void rwlock_destroy(struct rwlock *l)
  79 {
  80         pthread_rwlock_destroy(&l->lock);
  81 }
  82
  83 static inline void rwlock_rd_lock(struct rwlock *l)
  84 {
  85         pthread_rwlock_rdlock(&l->lock);
  86 }
  87
  88 static inline void rwlock_wr_lock(struct rwlock *l)
  89 {
  90         pthread_rwlock_wrlock(&l->lock);
  91 }
  92
  93 static inline void rwlock_unlock(struct rwlock *l)
  94 {
  95         pthread_rwlock_unlock(&l->lock);
  96 }
  97
  98 #endif /* LOCKING_H */