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 */ 22