Differential D53735 Diff 166364 sys/dev/sound/pcm/sound.h

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sys/dev/sound/pcm/sound.h

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#define PCM_TRYLOCK(d) mtx_trylock((d)->lock)		#define PCM_TRYLOCK(d) mtx_trylock((d)->lock)
#define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED)		#define PCM_LOCKASSERT(d) mtx_assert((d)->lock, MA_OWNED)
#define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED)		#define PCM_UNLOCKASSERT(d) mtx_assert((d)->lock, MA_NOTOWNED)

/*		/*
* For PCM_[WAIT \| ACQUIRE \| RELEASE], be sure to surround these		* For PCM_[WAIT \| ACQUIRE \| RELEASE], be sure to surround these
* with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you!		* with PCM_LOCK/UNLOCK() sequence, or I'll come to gnaw upon you!
*/		*/
#ifdef SND_DIAGNOSTIC
#define PCM_WAIT(x) do { \		#define PCM_WAIT(x) do { \
if (!PCM_LOCKOWNED(x)) \
panic("%s(%d): [PCM WAIT] Mutex not owned!", \
__func__, __LINE__); \
while ((x)->flags & SD_F_BUSY) { \
if (snd_verbose > 3) \
device_printf((x)->dev, \
"%s(%d): [PCM WAIT] calling cv_wait().\n", \
__func__, __LINE__); \
cv_wait(&(x)->cv, (x)->lock); \
} \
} while (0)

#define PCM_ACQUIRE(x) do { \
if (!PCM_LOCKOWNED(x)) \
panic("%s(%d): [PCM ACQUIRE] Mutex not owned!", \
__func__, __LINE__); \
if ((x)->flags & SD_F_BUSY) \
panic("%s(%d): [PCM ACQUIRE] " \
"Trying to acquire BUSY cv!", __func__, __LINE__); \
(x)->flags \|= SD_F_BUSY; \
} while (0)

#define PCM_RELEASE(x) do { \
if (!PCM_LOCKOWNED(x)) \
panic("%s(%d): [PCM RELEASE] Mutex not owned!", \
__func__, __LINE__); \
if ((x)->flags & SD_F_BUSY) { \
(x)->flags &= ~SD_F_BUSY; \
cv_broadcast(&(x)->cv); \
} else \
panic("%s(%d): [PCM RELEASE] Releasing non-BUSY cv!", \
__func__, __LINE__); \
} while (0)

/* Quick version, for shorter path. */
#define PCM_ACQUIRE_QUICK(x) do { \
if (PCM_LOCKOWNED(x)) \
panic("%s(%d): [PCM ACQUIRE QUICK] Mutex owned!", \
__func__, __LINE__); \
PCM_LOCK(x); \
PCM_WAIT(x); \
PCM_ACQUIRE(x); \
PCM_UNLOCK(x); \
} while (0)

#define PCM_RELEASE_QUICK(x) do { \
if (PCM_LOCKOWNED(x)) \
panic("%s(%d): [PCM RELEASE QUICK] Mutex owned!", \
__func__, __LINE__); \
PCM_LOCK(x); \
PCM_RELEASE(x); \
PCM_UNLOCK(x); \
} while (0)

#define PCM_BUSYASSERT(x) do { \
if (!((x) != NULL && ((x)->flags & SD_F_BUSY))) \
panic("%s(%d): [PCM BUSYASSERT] " \
"Failed, snddev_info=%p", __func__, __LINE__, x); \
} while (0)

#define PCM_GIANT_ENTER(x) do { \
int _pcm_giant = 0; \
if (PCM_LOCKOWNED(x)) \
panic("%s(%d): [GIANT ENTER] PCM lock owned!", \
__func__, __LINE__); \
if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \
device_printf((x)->dev, \
"%s(%d): [GIANT ENTER] Giant owned!\n", \
__func__, __LINE__); \
if (!((x)->flags & SD_F_MPSAFE) && mtx_owned(&Giant) == 0) \
do { \
mtx_lock(&Giant); \
_pcm_giant = 1; \
} while (0)

#define PCM_GIANT_EXIT(x) do { \
if (PCM_LOCKOWNED(x)) \
panic("%s(%d): [GIANT EXIT] PCM lock owned!", \
__func__, __LINE__); \
if (!(_pcm_giant == 0 \|\| _pcm_giant == 1)) \
panic("%s(%d): [GIANT EXIT] _pcm_giant screwed!", \
__func__, __LINE__); \
if ((x)->flags & SD_F_MPSAFE) { \
if (_pcm_giant == 1) \
panic("%s(%d): [GIANT EXIT] MPSAFE Giant?", \
__func__, __LINE__); \
if (mtx_owned(&Giant) != 0 && snd_verbose > 3) \
device_printf((x)->dev, \
"%s(%d): [GIANT EXIT] Giant owned!\n", \
__func__, __LINE__); \
} \
if (_pcm_giant != 0) { \
if (mtx_owned(&Giant) == 0) \
panic("%s(%d): [GIANT EXIT] Giant not owned!", \
__func__, __LINE__); \
_pcm_giant = 0; \
mtx_unlock(&Giant); \
} \
} while (0)
#else /* !SND_DIAGNOSTIC */
#define PCM_WAIT(x) do { \
PCM_LOCKASSERT(x); \		PCM_LOCKASSERT(x); \
while ((x)->flags & SD_F_BUSY) \		while ((x)->flags & SD_F_BUSY) \
cv_wait(&(x)->cv, (x)->lock); \		cv_wait(&(x)->cv, (x)->lock); \
} while (0)		} while (0)

#define PCM_ACQUIRE(x) do { \		#define PCM_ACQUIRE(x) do { \
PCM_LOCKASSERT(x); \		PCM_LOCKASSERT(x); \
KASSERT(!((x)->flags & SD_F_BUSY), \		KASSERT(!((x)->flags & SD_F_BUSY), \
▲ Show 20 Lines • Show All 52 Lines • ▼ Show 20 Lines	KASSERT(!((x)->flags & SD_F_MPSAFE) \|\| \
("%s(%d): [GIANT EXIT] MPSAFE Giant?", \		("%s(%d): [GIANT EXIT] MPSAFE Giant?", \
__func__, __LINE__)); \		__func__, __LINE__)); \
if (_pcm_giant != 0) { \		if (_pcm_giant != 0) { \
mtx_assert(&Giant, MA_OWNED); \		mtx_assert(&Giant, MA_OWNED); \
_pcm_giant = 0; \		_pcm_giant = 0; \
mtx_unlock(&Giant); \		mtx_unlock(&Giant); \
} \		} \
} while (0)		} while (0)
#endif /* SND_DIAGNOSTIC */

#define PCM_GIANT_LEAVE(x) \		#define PCM_GIANT_LEAVE(x) \
PCM_GIANT_EXIT(x); \		PCM_GIANT_EXIT(x); \
} while (0)		} while (0)

#endif /* _KERNEL */		#endif /* _KERNEL */

/* make figuring out what a format is easier. got AFMT_STEREO already */		/* make figuring out what a format is easier. got AFMT_STEREO already */
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