git.sesse.net Git - bcachefs-tools-debian/blob - include/linux/spinlock.h

   1 #ifndef __TOOLS_LINUX_SPINLOCK_H
   2 #define __TOOLS_LINUX_SPINLOCK_H
   3
   4 #include <linux/atomic.h>
   5 #include <pthread.h>
   6
   7 typedef struct {
   8         pthread_mutex_t lock;
   9 } raw_spinlock_t;
  10
  11 #define __RAW_SPIN_LOCK_UNLOCKED(name)  (raw_spinlock_t) { .lock = PTHREAD_MUTEX_INITIALIZER  }
  12
  13 static inline void raw_spin_lock_init(raw_spinlock_t *lock)
  14 {
  15         pthread_mutex_init(&lock->lock, NULL);
  16 }
  17
  18 static inline bool raw_spin_trylock(raw_spinlock_t *lock)
  19 {
  20         return !pthread_mutex_trylock(&lock->lock);
  21 }
  22
  23 static inline void raw_spin_lock(raw_spinlock_t *lock)
  24 {
  25         pthread_mutex_lock(&lock->lock);
  26 }
  27
  28 static inline void raw_spin_unlock(raw_spinlock_t *lock)
  29 {
  30         pthread_mutex_unlock(&lock->lock);
  31 }
  32
  33 #define raw_spin_lock_irq(lock)         raw_spin_lock(lock)
  34 #define raw_spin_unlock_irq(lock)       raw_spin_unlock(lock)
  35
  36 #define raw_spin_lock_irqsave(lock, flags)              \
  37 do {                                                    \
  38         flags = 0;                                      \
  39         raw_spin_lock(lock);                            \
  40 } while (0)
  41
  42 #define raw_spin_unlock_irqrestore(lock, flags) raw_spin_unlock(lock)
  43
  44 typedef raw_spinlock_t spinlock_t;
  45
  46 #define __SPIN_LOCK_UNLOCKED(name)      __RAW_SPIN_LOCK_UNLOCKED(name)
  47
  48 #define DEFINE_SPINLOCK(x)      spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
  49
  50 #define spin_lock_init(lock)            raw_spin_lock_init(lock)
  51 #define spin_lock(lock)                 raw_spin_lock(lock)
  52 #define spin_unlock(lock)               raw_spin_unlock(lock)
  53
  54 #define spin_lock_nested(lock, n)       spin_lock(lock)
  55
  56 #define spin_lock_bh(lock)              raw_spin_lock(lock)
  57 #define spin_unlock_bh(lock)            raw_spin_unlock(lock)
  58
  59 #define spin_lock_irq(lock)             raw_spin_lock(lock)
  60 #define spin_unlock_irq(lock)           raw_spin_unlock(lock)
  61
  62 #define spin_lock_irqsave(lock, flags)  raw_spin_lock_irqsave(lock, flags)
  63 #define spin_unlock_irqrestore(lock, flags) raw_spin_unlock_irqrestore(lock, flags)
  64
  65 #endif /* __TOOLS_LINUX_SPINLOCK_H */