pthread.h

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/* Wait until lock for MUTEX becomes available and lock it.  */
extern int pthread_mutex_lock (pthread_mutex_t *__mutex) __THROW;

#ifdef __USE_XOPEN2K
/* Wait until lock becomes available, or specified time passes. */
extern int pthread_mutex_timedlock (pthread_mutex_t *__restrict __mutex,
				    __const struct timespec *__restrict
				    __abstime) __THROW;
#endif

/* Unlock MUTEX.  */
extern int pthread_mutex_unlock (pthread_mutex_t *__mutex) __THROW;


/* Functions for handling mutex attributes.  */

/* Initialize mutex attribute object ATTR with default attributes
   (kind is PTHREAD_MUTEX_TIMED_NP).  */
extern int pthread_mutexattr_init (pthread_mutexattr_t *__attr) __THROW;

/* Destroy mutex attribute object ATTR.  */
extern int pthread_mutexattr_destroy (pthread_mutexattr_t *__attr) __THROW;

/* Get the process-shared flag of the mutex attribute ATTR.  */
extern int pthread_mutexattr_getpshared (__const pthread_mutexattr_t *
					 __restrict __attr,
					 int *__restrict __pshared) __THROW;

/* Set the process-shared flag of the mutex attribute ATTR.  */
extern int pthread_mutexattr_setpshared (pthread_mutexattr_t *__attr,
					 int __pshared) __THROW;

#ifdef __USE_UNIX98
/* Set the mutex kind attribute in *ATTR to KIND (either PTHREAD_MUTEX_NORMAL,
   PTHREAD_MUTEX_RECURSIVE, PTHREAD_MUTEX_ERRORCHECK, or
   PTHREAD_MUTEX_DEFAULT).  */
extern int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind)
     __THROW;

/* Return in *KIND the mutex kind attribute in *ATTR.  */
extern int pthread_mutexattr_gettype (__const pthread_mutexattr_t *__restrict
				      __attr, int *__restrict __kind) __THROW;
#endif


/* Functions for handling conditional variables.  */

/* Initialize condition variable COND using attributes ATTR, or use
   the default values if later is NULL.  */
extern int pthread_cond_init (pthread_cond_t *__restrict __cond,
			      __const pthread_condattr_t *__restrict
			      __cond_attr) __THROW;

/* Destroy condition variable COND.  */
extern int pthread_cond_destroy (pthread_cond_t *__cond) __THROW;

/* Wake up one thread waiting for condition variable COND.  */
extern int pthread_cond_signal (pthread_cond_t *__cond) __THROW;

/* Wake up all threads waiting for condition variables COND.  */
extern int pthread_cond_broadcast (pthread_cond_t *__cond) __THROW;

/* Wait for condition variable COND to be signaled or broadcast.
   MUTEX is assumed to be locked before.  */
extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
			      pthread_mutex_t *__restrict __mutex) __THROW;

/* Wait for condition variable COND to be signaled or broadcast until
   ABSTIME.  MUTEX is assumed to be locked before.  ABSTIME is an
   absolute time specification; zero is the beginning of the epoch
   (00:00:00 GMT, January 1, 1970).  */
extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
				   pthread_mutex_t *__restrict __mutex,
				   __const struct timespec *__restrict
				   __abstime) __THROW;

/* Functions for handling condition variable attributes.  */

/* Initialize condition variable attribute ATTR.  */
extern int pthread_condattr_init (pthread_condattr_t *__attr) __THROW;

/* Destroy condition variable attribute ATTR.  */
extern int pthread_condattr_destroy (pthread_condattr_t *__attr) __THROW;

/* Get the process-shared flag of the condition variable attribute ATTR.  */
extern int pthread_condattr_getpshared (__const pthread_condattr_t *
					__restrict __attr,
					int *__restrict __pshared) __THROW;

/* Set the process-shared flag of the condition variable attribute ATTR.  */
extern int pthread_condattr_setpshared (pthread_condattr_t *__attr,
					int __pshared) __THROW;


#ifdef __USE_UNIX98
/* Functions for handling read-write locks.  */

/* Initialize read-write lock RWLOCK using attributes ATTR, or use
   the default values if later is NULL.  */
extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
				__const pthread_rwlockattr_t *__restrict
				__attr) __THROW;

/* Destroy read-write lock RWLOCK.  */
extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock) __THROW;

/* Acquire read lock for RWLOCK.  */
extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock) __THROW;

/* Try to acquire read lock for RWLOCK.  */
extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock) __THROW;

/* Acquire write lock for RWLOCK.  */
extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock) __THROW;

/* Try to acquire write lock for RWLOCK.  */
extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock) __THROW;

#if 0
/* Not yet implemented in uClibc! */

#ifdef __USE_XOPEN2K
/* Try to acquire read lock for RWLOCK or return after specfied time.  */
extern int pthread_rwlock_timedrdlock (pthread_rwlock_t *__restrict __rwlock,
				       __const struct timespec *__restrict
				       __abstime) __THROW;
/* Try to acquire write lock for RWLOCK or return after specfied time.  */
extern int pthread_rwlock_timedwrlock (pthread_rwlock_t *__restrict __rwlock,
				       __const struct timespec *__restrict
				       __abstime) __THROW;
#endif
#endif


/* Unlock RWLOCK.  */
extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock) __THROW;


/* Functions for handling read-write lock attributes.  */

/* Initialize attribute object ATTR with default values.  */
extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr) __THROW;

/* Destroy attribute object ATTR.  */
extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr) __THROW;

/* Return current setting of process-shared attribute of ATTR in PSHARED.  */
extern int pthread_rwlockattr_getpshared (__const pthread_rwlockattr_t *
					  __restrict __attr,
					  int *__restrict __pshared) __THROW;

/* Set process-shared attribute of ATTR to PSHARED.  */
extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr,
					  int __pshared) __THROW;

/* Return current setting of reader/writer preference.  */
extern int pthread_rwlockattr_getkind_np (__const pthread_rwlockattr_t *__attr,
					  int *__pref) __THROW;

/* Set reader/write preference.  */
extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr,
					  int __pref) __THROW;
#endif

#if 0
/* Not yet implemented in uClibc! */

#ifdef __USE_XOPEN2K
/* The IEEE Std. 1003.1j-2000 introduces functions to implement
   spinlocks.  */

/* Initialize the spinlock LOCK.  If PSHARED is nonzero the spinlock can
   be shared between different processes.  */
extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
     __THROW;

/* Destroy the spinlock LOCK.  */
extern int pthread_spin_destroy (pthread_spinlock_t *__lock) __THROW;

/* Wait until spinlock LOCK is retrieved.  */
extern int pthread_spin_lock (pthread_spinlock_t *__lock) __THROW;

/* Try to lock spinlock LOCK.  */
extern int pthread_spin_trylock (pthread_spinlock_t *__lock) __THROW;

/* Release spinlock LOCK.  */
extern int pthread_spin_unlock (pthread_spinlock_t *__lock) __THROW;


/* Barriers are a also a new feature in 1003.1j-2000. */

extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier,
				 __const pthread_barrierattr_t *__restrict
				 __attr, unsigned int __count) __THROW;

extern int pthread_barrier_destroy (pthread_barrier_t *__barrier) __THROW;

extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr) __THROW;

extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr) __THROW;

extern int pthread_barrierattr_getpshared (__const pthread_barrierattr_t *
					   __restrict __attr,
					   int *__restrict __pshared) __THROW;

extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
					   int __pshared) __THROW;

extern int pthread_barrier_wait (pthread_barrier_t *__barrier) __THROW;
#endif
#endif


/* Functions for handling thread-specific data.  */

/* Create a key value identifying a location in the thread-specific
   data area.  Each thread maintains a distinct thread-specific data
   area.  DESTR_FUNCTION, if non-NULL, is called with the value
   associated to that key when the key is destroyed.
   DESTR_FUNCTION is not called if the value associated is NULL when
   the key is destroyed.  */
extern int pthread_key_create (pthread_key_t *__key,
			       void (*__destr_function) (void *)) __THROW;

/* Destroy KEY.  */
extern int pthread_key_delete (pthread_key_t __key) __THROW;

/* Store POINTER in the thread-specific data slot identified by KEY. */
extern int pthread_setspecific (pthread_key_t __key,
				__const void *__pointer) __THROW;

/* Return current value of the thread-specific data slot identified by KEY.  */
extern void *pthread_getspecific (pthread_key_t __key) __THROW;


/* Functions for handling initialization.  */

/* Guarantee that the initialization function INIT_ROUTINE will be called
   only once, even if pthread_once is executed several times with the
   same ONCE_CONTROL argument. ONCE_CONTROL must point to a static or
   extern variable initialized to PTHREAD_ONCE_INIT.  */
extern int pthread_once (pthread_once_t *__once_control,
			 void (*__init_routine) (void)) __THROW;


/* Functions for handling cancellation.  */

/* Set cancelability state of current thread to STATE, returning old
   state in *OLDSTATE if OLDSTATE is not NULL.  */
extern int pthread_setcancelstate (int __state, int *__oldstate) __THROW;

/* Set cancellation state of current thread to TYPE, returning the old
   type in *OLDTYPE if OLDTYPE is not NULL.  */
extern int pthread_setcanceltype (int __type, int *__oldtype) __THROW;

/* Cancel THREAD immediately or at the next possibility.  */
extern int pthread_cancel (pthread_t __thread_id) __THROW;

/* Test for pending cancellation for the current thread and terminate
   the thread as per pthread_exit(PTHREAD_CANCELED) if it has been
   cancelled.  */
extern void pthread_testcancel (void) __THROW;


/* Install a cleanup handler: ROUTINE will be called with arguments ARG
   when the thread is cancelled or calls pthread_exit.  ROUTINE will also
   be called with arguments ARG when the matching pthread_cleanup_pop
   is executed with non-zero EXECUTE argument.
   pthread_cleanup_push and pthread_cleanup_pop are macros and must always
   be used in matching pairs at the same nesting level of braces. */

#define pthread_cleanup_push(routine,arg) \
  { struct _pthread_cleanup_buffer _buffer;				      \
    _pthread_cleanup_push (&_buffer, (routine), (arg));

extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *__buffer,
				   void (*__routine) (void *),
				   void *__arg) __THROW;

/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
   If EXECUTE is non-zero, the handler function is called. */

#define pthread_cleanup_pop(execute) \
    _pthread_cleanup_pop (&_buffer, (execute)); }

extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *__buffer,
				  int __execute) __THROW;

/* Install a cleanup handler as pthread_cleanup_push does, but also
   saves the current cancellation type and set it to deferred cancellation.  */

#ifdef __USE_GNU
# define pthread_cleanup_push_defer_np(routine,arg) \
  { struct _pthread_cleanup_buffer _buffer;				      \
    _pthread_cleanup_push_defer (&_buffer, (routine), (arg));

extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *__buffer,
					 void (*__routine) (void *),
					 void *__arg) __THROW;

/* Remove a cleanup handler as pthread_cleanup_pop does, but also
   restores the cancellation type that was in effect when the matching
   pthread_cleanup_push_defer was called.  */

# define pthread_cleanup_pop_restore_np(execute) \
  _pthread_cleanup_pop_restore (&_buffer, (execute)); }

extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *__buffer,
					  int __execute) __THROW;
#endif


#if 0
/* Not yet implemented in uClibc! */

#ifdef __USE_XOPEN2K
/* Get ID of CPU-time clock for thread THREAD_ID.  */
extern int pthread_getcpuclockid (pthread_t __thread_id,
				  clockid_t *__clock_id) __THROW;
#endif
#endif


/* Functions for handling signals.  */
#include <bits/sigthread.h>


/* Functions for handling process creation and process execution.  */

/* Install handlers to be called when a new process is created with FORK.
   The PREPARE handler is called in the parent process just before performing
   FORK. The PARENT handler is called in the parent process just after FORK.
   The CHILD handler is called in the child process.  Each of the three
   handlers can be NULL, meaning that no handler needs to be called at that
   point.
   PTHREAD_ATFORK can be called several times, in which case the PREPARE
   handlers are called in LIFO order (last added with PTHREAD_ATFORK,
   first called before FORK), and the PARENT and CHILD handlers are called
   in FIFO (first added, first called).  */

extern int pthread_atfork (void (*__prepare) (void),
			   void (*__parent) (void),
			   void (*__child) (void)) __THROW;

/* Terminate all threads in the program except the calling process.
   Should be called just before invoking one of the exec*() functions.  */

extern void pthread_kill_other_threads_np (void) __THROW;

__END_DECLS

#endif	/* pthread.h */