Include dependency graph for wait.c:

Data Structures
struct	wait_bucket

Macros
#define	WAIT_BUCKET_INIT { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 }

#define	WAIT_BUCKET_INIT_2 WAIT_BUCKET_INIT, WAIT_BUCKET_INIT

#define	WAIT_BUCKET_INIT_4 WAIT_BUCKET_INIT_2, WAIT_BUCKET_INIT_2

#define	WAIT_BUCKET_INIT_8 WAIT_BUCKET_INIT_4, WAIT_BUCKET_INIT_4

#define	WAIT_BUCKET_INIT_16 WAIT_BUCKET_INIT_8, WAIT_BUCKET_INIT_8

#define	WAIT_BUCKET_INIT_32 WAIT_BUCKET_INIT_16, WAIT_BUCKET_INIT_16

Functions
static struct wait_bucket *	wait_bucket_get (atomic_uint *addr)

static struct wait_bucket *	wait_bucket_enter (atomic_uint *addr)

static void	wait_bucket_leave (struct wait_bucket *bucket)

void	vlc_atomic_wait (void *addr, unsigned value)
	Waits on an address.

static int	vlc_atomic_timedwait_timespec (void addr, unsigned value, const struct timespec restrict ts)

static void	vlc_timespec_adjust (clockid_t cid, struct timespec *restrict ts)

int	vlc_atomic_timedwait (void *addr, unsigned value, vlc_tick_t deadline)
	Waits on an address with a time-out.

int	vlc_atomic_timedwait_daytime (void *addr, unsigned value, time_t deadline)

void	vlc_atomic_notify_one (void *addr)
	Wakes up one thread on an address.

void	vlc_atomic_notify_all (void *addr)
	Wakes up all thread on an address.

Variables
static clockid_t	vlc_clock_id = CLOCK_REALTIME

static struct wait_bucket	wait_buckets [32] = { { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } }

Macro Definition Documentation

◆ WAIT_BUCKET_INIT

#define WAIT_BUCKET_INIT { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 }

◆ WAIT_BUCKET_INIT_16

#define WAIT_BUCKET_INIT_16 WAIT_BUCKET_INIT_8, WAIT_BUCKET_INIT_8

◆ WAIT_BUCKET_INIT_2

#define WAIT_BUCKET_INIT_2 WAIT_BUCKET_INIT, WAIT_BUCKET_INIT

◆ WAIT_BUCKET_INIT_32

#define WAIT_BUCKET_INIT_32 WAIT_BUCKET_INIT_16, WAIT_BUCKET_INIT_16

◆ WAIT_BUCKET_INIT_4

#define WAIT_BUCKET_INIT_4 WAIT_BUCKET_INIT_2, WAIT_BUCKET_INIT_2

◆ WAIT_BUCKET_INIT_8

#define WAIT_BUCKET_INIT_8 WAIT_BUCKET_INIT_4, WAIT_BUCKET_INIT_4

Function Documentation

◆ vlc_atomic_notify_all()

void vlc_atomic_notify_all ( void * addr )

Wakes up all thread on an address.

Wakes up all threads sleeping on the specified address (if any). Any thread sleeping within a call to vlc_atomic_wait() or vlc_atomic_timedwait() with the specified address as first call parameter will be woken up.

Parameters

addr	address identifying which threads to wake up

References wait_bucket::lock, wait_bucket::wait, wait_bucket_get(), and wait_bucket::waiters.

Referenced by vlc_atomic_notify_one().

◆ vlc_atomic_notify_one()

void vlc_atomic_notify_one ( void * addr )

Wakes up one thread on an address.

Wakes up (at least) one of the thread sleeping on the specified address. The address must be equal to the first parameter given by at least one thread sleeping within the vlc_atomic_wait() or vlc_atomic_timedwait() functions. If no threads are found, this function does nothing.

Parameters

addr	address identifying which threads may be woken up

References vlc_atomic_notify_all().

◆ vlc_atomic_timedwait()

int vlc_atomic_timedwait	(	void *	addr,
		unsigned	val,
		vlc_tick_t	deadline
	)

Waits on an address with a time-out.

This function operates as vlc_atomic_wait() but provides an additional time-out. If the deadline is reached, the thread resumes and the function returns.

Parameters

addr	address to check for
val	value to match at the address
deadline	deadline to wait until

Return values

0	the function was woken up before the time-out
ETIMEDOUT	the deadline was reached

References vlc_atomic_timedwait_timespec(), vlc_tick_to_timespec(), and vlc_timespec_adjust().

◆ vlc_atomic_timedwait_daytime()

int vlc_atomic_timedwait_daytime	(	void *	addr,
		unsigned	value,
		time_t	deadline
	)

References timespec::tv_sec, vlc_atomic_timedwait_timespec(), and vlc_timespec_adjust().

◆ vlc_atomic_timedwait_timespec()

static int vlc_atomic_timedwait_timespec	(	void *	addr,
		unsigned	value,
		const struct timespec *restrict	ts
	)

static

References wait_bucket::lock, wait_bucket::wait, wait_bucket_enter(), and wait_bucket_leave().

Referenced by vlc_atomic_timedwait(), and vlc_atomic_timedwait_daytime().

◆ vlc_atomic_wait()

void vlc_atomic_wait	(	void *	addr,
		unsigned	val
	)

Waits on an address.

Puts the calling thread to sleep if a specific unsigned 32-bits value is stored at a specified address. The thread will sleep until it is woken up by a call to vlc_atomic_notify_one() or vlc_atomic_notify_all() in another thread, or spuriously.

If the value does not match, do nothing and return immediately.

Parameters

addr	address to check for
val	value to match at the address

References wait_bucket::lock, wait_bucket::wait, wait_bucket_enter(), and wait_bucket_leave().

◆ vlc_timespec_adjust()

static void vlc_timespec_adjust	(	clockid_t	cid,
		struct timespec *restrict	ts
	)

static

References lldiv(), timespec::tv_nsec, timespec::tv_sec, and vlc_clock_id.

Referenced by vlc_atomic_timedwait(), and vlc_atomic_timedwait_daytime().

◆ wait_bucket_enter()

static struct wait_bucket * wait_bucket_enter ( atomic_uint * addr )

static

References wait_bucket::lock, wait_bucket_get(), and wait_bucket::waiters.

Referenced by vlc_atomic_timedwait_timespec(), and vlc_atomic_wait().

◆ wait_bucket_get()

static struct wait_bucket * wait_bucket_get ( atomic_uint * addr )

static

References ARRAY_SIZE, and wait_buckets.

Referenced by vlc_atomic_notify_all(), and wait_bucket_enter().

◆ wait_bucket_leave()

static void wait_bucket_leave ( struct wait_bucket * bucket )

static

References wait_bucket::lock, and wait_bucket::waiters.

Referenced by vlc_atomic_timedwait_timespec(), and vlc_atomic_wait().

Variable Documentation

◆ vlc_clock_id

clockid_t vlc_clock_id = CLOCK_REALTIME

static

Referenced by vlc_timespec_adjust().

◆ wait_buckets

struct wait_bucket wait_buckets[32] = { { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } , { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0 } }

static

Referenced by wait_bucket_get().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ WAIT_BUCKET_INIT

◆ WAIT_BUCKET_INIT_16

◆ WAIT_BUCKET_INIT_2

◆ WAIT_BUCKET_INIT_32

◆ WAIT_BUCKET_INIT_4

◆ WAIT_BUCKET_INIT_8

Function Documentation

◆ vlc_atomic_notify_all()

◆ vlc_atomic_notify_one()

◆ vlc_atomic_timedwait()

◆ vlc_atomic_timedwait_daytime()

◆ vlc_atomic_timedwait_timespec()

◆ vlc_atomic_wait()

◆ vlc_timespec_adjust()

◆ wait_bucket_enter()

◆ wait_bucket_get()

◆ wait_bucket_leave()

Variable Documentation

◆ vlc_clock_id

◆ wait_buckets