Include dependency graph for thread.c:

Macros
#define	_POSIX_TIMERS (-1)

#define	_POSIX_CLOCK_SELECTION (-1)

#define	_POSIX_MONOTONIC_CLOCK (-1)

#define	vlc_clock_setup() (void)0

#define	VLC_THREAD_ASSERT(action)

#define	RUNNING_ON_VALGRIND (0)

#define	VLC_STACKSIZE (128 * sizeof (void ) 1024)

Functions
static struct timespec	mtime_to_ts (vlc_tick_t date)

void	vlc_trace (const char fn, const char file, unsigned line)
	Print a backtrace to the standard error for debugging purpose. More...

static void	vlc_thread_fatal (const char action, int error, const char function, const char *file, unsigned line)
	Reports a fatal error from the threading layer, for debugging purposes. More...

void	vlc_mutex_init (vlc_mutex_t *p_mutex)
	Initializes a fast mutex. More...

void	vlc_mutex_init_recursive (vlc_mutex_t *p_mutex)
	Initializes a recursive mutex. More...

void	vlc_mutex_destroy (vlc_mutex_t *p_mutex)
	Deinitializes a mutex. More...

void	vlc_assert_locked (vlc_mutex_t *p_mutex)
	Asserts that a mutex is locked by the calling thread. More...

void	vlc_mutex_lock (vlc_mutex_t *p_mutex)
	Acquires a mutex. More...

int	vlc_mutex_trylock (vlc_mutex_t *p_mutex)
	Tries to acquire a mutex. More...

void	vlc_mutex_unlock (vlc_mutex_t *p_mutex)
	Releases a mutex. More...

void	vlc_cond_init (vlc_cond_t *p_condvar)
	Initializes a condition variable. More...

void	vlc_cond_init_daytime (vlc_cond_t *p_condvar)
	Initializes a condition variable (wall clock). More...

void	vlc_cond_destroy (vlc_cond_t *p_condvar)
	Deinitializes a condition variable. More...

void	vlc_cond_signal (vlc_cond_t *p_condvar)
	Wakes up one thread waiting on a condition variable. More...

void	vlc_cond_broadcast (vlc_cond_t *p_condvar)
	Wakes up all threads waiting on a condition variable. More...

void	vlc_cond_wait (vlc_cond_t p_condvar, vlc_mutex_t p_mutex)
	Waits on a condition variable. More...

int	vlc_cond_timedwait (vlc_cond_t p_condvar, vlc_mutex_t p_mutex, vlc_tick_t deadline)
	Waits on a condition variable up to a certain date. More...

int	vlc_cond_timedwait_daytime (vlc_cond_t p_condvar, vlc_mutex_t p_mutex, time_t deadline)

void	vlc_sem_init (vlc_sem_t *sem, unsigned value)
	Initializes a semaphore. More...

void	vlc_sem_destroy (vlc_sem_t *sem)
	Deinitializes a semaphore. More...

int	vlc_sem_post (vlc_sem_t *sem)
	Increments the value of a semaphore. More...

void	vlc_sem_wait (vlc_sem_t *sem)
	Waits on a semaphore. More...

void	vlc_rwlock_init (vlc_rwlock_t *lock)
	Initializes a read/write lock. More...

void	vlc_rwlock_destroy (vlc_rwlock_t *lock)
	Destroys an initialized unused read/write lock. More...

void	vlc_rwlock_rdlock (vlc_rwlock_t *lock)
	Acquires a read/write lock for reading. More...

void	vlc_rwlock_wrlock (vlc_rwlock_t *lock)
	Acquires a read/write lock for writing. More...

void	vlc_rwlock_unlock (vlc_rwlock_t *lock)
	Releases a read/write lock. More...

int	vlc_threadvar_create (vlc_threadvar_t key, void(destr)(void *))
	Allocates a thread-specific variable. More...

void	vlc_threadvar_delete (vlc_threadvar_t *p_tls)
	Deallocates a thread-specific variable. More...

int	vlc_threadvar_set (vlc_threadvar_t key, void *value)
	Sets a thread-specific variable. More...

void *	vlc_threadvar_get (vlc_threadvar_t key)
	Gets the value of a thread-local variable for the calling thread. More...

void	vlc_threads_setup (libvlc_int_t *p_libvlc)

static int	vlc_clone_attr (vlc_thread_t th, pthread_attr_t attr, void (entry)(void ), void data, int priority)

int	vlc_clone (vlc_thread_t th, void (entry)(void ), void *data, int priority)
	Creates and starts a new thread. More...

void	vlc_join (vlc_thread_t th, void **result)
	Waits for a thread to complete (if needed), then destroys it. More...

int	vlc_clone_detach (vlc_thread_t th, void (entry)(void ), void *data, int priority)
	Creates and starts new detached thread. More...

vlc_thread_t	vlc_thread_self (void)
	Thread handle. More...

unsigned long	vlc_thread_id (void)
	Thread identifier. More...

int	vlc_set_priority (vlc_thread_t th, int priority)

void	vlc_cancel (vlc_thread_t th)
	Marks a thread as cancelled. More...

int	vlc_savecancel (void)
	Disables thread cancellation. More...

void	vlc_restorecancel (int state)
	Restores the cancellation state. More...

void	vlc_testcancel (void)
	Issues an explicit deferred cancellation point. More...

void	vlc_control_cancel (int cmd,...)
	Internal handler for thread cancellation. More...

vlc_tick_t	mdate (void)
	Precision monotonic clock. More...

void	mwait (vlc_tick_t deadline)
	Waits until a deadline. More...

void	msleep (vlc_tick_t delay)
	Waits for an interval of time. More...

unsigned	vlc_GetCPUCount (void)
	Count CPUs. More...

Variables
static bool	rt_priorities = false

static int	rt_offset

Macro Definition Documentation

◆ _POSIX_CLOCK_SELECTION

#define _POSIX_CLOCK_SELECTION (-1)

◆ _POSIX_MONOTONIC_CLOCK

#define _POSIX_MONOTONIC_CLOCK (-1)

◆ _POSIX_TIMERS

#define _POSIX_TIMERS (-1)

◆ RUNNING_ON_VALGRIND

#define RUNNING_ON_VALGRIND (0)

◆ vlc_clock_setup

#define vlc_clock_setup ( ) (void)0

◆ VLC_STACKSIZE

#define VLC_STACKSIZE (128 * sizeof (void *) * 1024)

◆ VLC_THREAD_ASSERT

#define VLC_THREAD_ASSERT ( action )

Value:

if (unlikely(val)) \

vlc_thread_fatal (action, val, __func__, __FILE__, __LINE__)

Function Documentation

◆ mtime_to_ts()

static struct timespec mtime_to_ts ( vlc_tick_t date )

static

References CLOCK_FREQ, and lldiv().

Referenced by msleep(), mwait(), and vlc_cond_timedwait().

◆ vlc_assert_locked()

void vlc_assert_locked ( vlc_mutex_t * p_mutex )

Asserts that a mutex is locked by the calling thread.

References RUNNING_ON_VALGRIND.

◆ vlc_clone_attr()

static int vlc_clone_attr	(	vlc_thread_t *	th,
		pthread_attr_t *	attr,
		void ()(void *)	entry,
		void *	data,
		int	priority
	)

static

References vlc_thread_t::handle, rt_offset, rt_priorities, and VLC_STACKSIZE.

Referenced by vlc_clone(), and vlc_clone_detach().

◆ vlc_clone_detach()

int vlc_clone_detach	(	vlc_thread_t *	th,
		void ()(void *)	entry,
		void *	data,
		int	priority
	)

Creates and starts new detached thread.

A detached thread cannot be joined. Its resources will be automatically released whenever the thread exits (in particular, its call stack will be reclaimed).

Detached thread are particularly useful when some work needs to be done asynchronously, that is likely to be completed much earlier than the thread can practically be joined. In this case, thread detach can spare memory.

A detached thread may be cancelled, so as to expedite its termination. Be extremely careful if you do this: while a normal joinable thread can safely be cancelled after it has already exited, cancelling an already exited detached thread is undefined: The thread handle would is destroyed immediately when the detached thread exits. So you need to ensure that the detached thread is still running before cancellation is attempted.

Warning: Care must be taken that any resources used by the detached thread remains valid until the thread completes.

Note: A detached thread must eventually exit just like another other thread. In practice, LibVLC will wait for detached threads to exit before it unloads the plugins.

Parameters

th	[OUT] pointer to hold the thread handle, or NULL
entry	entry point for the thread
data	data parameter given to the entry point
priority	thread priority value