| #ifndef __SND_SEQ_LOCK_H |
| #define __SND_SEQ_LOCK_H |
| |
| #include <linux/sched.h> |
| |
| #if defined(CONFIG_SMP) || defined(CONFIG_SND_DEBUG) |
| |
| typedef atomic_t snd_use_lock_t; |
| |
| /* initialize lock */ |
| #define snd_use_lock_init(lockp) atomic_set(lockp, 0) |
| |
| /* increment lock */ |
| #define snd_use_lock_use(lockp) atomic_inc(lockp) |
| |
| /* release lock */ |
| #define snd_use_lock_free(lockp) atomic_dec(lockp) |
| |
| /* wait until all locks are released */ |
| void snd_use_lock_sync_helper(snd_use_lock_t *lock, const char *file, int line); |
| #define snd_use_lock_sync(lockp) snd_use_lock_sync_helper(lockp, __BASE_FILE__, __LINE__) |
| |
| #else /* SMP || CONFIG_SND_DEBUG */ |
| |
| typedef spinlock_t snd_use_lock_t; /* dummy */ |
| #define snd_use_lock_init(lockp) /**/ |
| #define snd_use_lock_use(lockp) /**/ |
| #define snd_use_lock_free(lockp) /**/ |
| #define snd_use_lock_sync(lockp) /**/ |
| |
| #endif /* SMP || CONFIG_SND_DEBUG */ |
| |
| #endif /* __SND_SEQ_LOCK_H */ |
