LXR linux/sound/core/seq/seq

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __SND_SEQ_LOCK_H
   3#define __SND_SEQ_LOCK_H
   4
   5#include <linux/sched.h>
   6
   7typedef atomic_t snd_use_lock_t;
   8
   9/* initialize lock */
  10#define snd_use_lock_init(lockp) atomic_set(lockp, 0)
  11
  12/* increment lock */
  13#define snd_use_lock_use(lockp) atomic_inc(lockp)
  14
  15/* release lock */
  16#define snd_use_lock_free(lockp) atomic_dec(lockp)
  17
  18/* wait until all locks are released */
  19void snd_use_lock_sync_helper(snd_use_lock_t *lock, const char *file, int line);
  20#define snd_use_lock_sync(lockp) snd_use_lock_sync_helper(lockp, __BASE_FILE__, __LINE__)
  21
  22#endif /* __SND_SEQ_LOCK_H */
  23