sound/core/seq/seq_lock.h

   1 #ifndef __SND_SEQ_LOCK_H
   2 #define __SND_SEQ_LOCK_H
   3
   4 #include <linux/sched.h>
   5
   6 typedef atomic_t snd_use_lock_t;
   7
   8 /* initialize lock */
   9 #define snd_use_lock_init(lockp) atomic_set(lockp, 0)
  10
  11 /* increment lock */
  12 #define snd_use_lock_use(lockp) atomic_inc(lockp)
  13
  14 /* release lock */
  15 #define snd_use_lock_free(lockp) atomic_dec(lockp)
  16
  17 /* wait until all locks are released */
  18 void snd_use_lock_sync_helper(snd_use_lock_t *lock, const char *file, int line);
  19 #define snd_use_lock_sync(lockp) snd_use_lock_sync_helper(lockp, __BASE_FILE__, __LINE__)
  20
  21 #endif /* __SND_SEQ_LOCK_H */