| /* Linuxthreads - a simple clone()-based implementation of Posix */ |
| /* threads for Linux. */ |
| /* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */ |
| /* */ |
| /* This program is free software; you can redistribute it and/or */ |
| /* modify it under the terms of the GNU Library General Public License */ |
| /* as published by the Free Software Foundation; either version 2 */ |
| /* of the License, or (at your option) any later version. */ |
| /* */ |
| /* This program is distributed in the hope that it will be useful, */ |
| /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ |
| /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ |
| /* GNU Library General Public License for more details. */ |
| |
| #ifndef _PTHREAD_H |
| #define _PTHREAD_H 1 |
| |
| #include <features.h> |
| |
| #include <sched.h> |
| #include <time.h> |
| |
| #define __need_sigset_t |
| #include <signal.h> |
| #include <bits/pthreadtypes.h> |
| #include <bits/initspin.h> |
| |
| |
| __BEGIN_DECLS |
| |
| /* Initializers. */ |
| |
| #define PTHREAD_MUTEX_INITIALIZER \ |
| {0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __LOCK_INITIALIZER} |
| #ifdef __USE_GNU |
| # define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \ |
| {0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __LOCK_INITIALIZER} |
| # define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \ |
| {0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __LOCK_INITIALIZER} |
| # define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ |
| {0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __LOCK_INITIALIZER} |
| #endif |
| |
| #define PTHREAD_COND_INITIALIZER {__LOCK_INITIALIZER, 0} |
| |
| #if defined __USE_UNIX98 || defined __USE_XOPEN2K |
| # define PTHREAD_RWLOCK_INITIALIZER \ |
| { __LOCK_INITIALIZER, 0, NULL, NULL, NULL, \ |
| PTHREAD_RWLOCK_DEFAULT_NP, PTHREAD_PROCESS_PRIVATE } |
| #endif |
| #ifdef __USE_GNU |
| # define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \ |
| { __LOCK_INITIALIZER, 0, NULL, NULL, NULL, \ |
| PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, PTHREAD_PROCESS_PRIVATE } |
| #endif |
| |
| /* Values for attributes. */ |
| |
| enum |
| { |
| PTHREAD_CREATE_JOINABLE, |
| #define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE |
| PTHREAD_CREATE_DETACHED |
| #define PTHREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED |
| }; |
| |
| enum |
| { |
| PTHREAD_INHERIT_SCHED, |
| #define PTHREAD_INHERIT_SCHED PTHREAD_INHERIT_SCHED |
| PTHREAD_EXPLICIT_SCHED |
| #define PTHREAD_EXPLICIT_SCHED PTHREAD_EXPLICIT_SCHED |
| }; |
| |
| enum |
| { |
| PTHREAD_SCOPE_SYSTEM, |
| #define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_SYSTEM |
| PTHREAD_SCOPE_PROCESS |
| #define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_PROCESS |
| }; |
| |
| enum |
| { |
| PTHREAD_MUTEX_ADAPTIVE_NP, |
| PTHREAD_MUTEX_RECURSIVE_NP, |
| PTHREAD_MUTEX_ERRORCHECK_NP, |
| PTHREAD_MUTEX_TIMED_NP |
| #ifdef __USE_UNIX98 |
| , |
| PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_ADAPTIVE_NP, |
| PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP, |
| PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP, |
| PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL |
| #endif |
| #ifdef __USE_GNU |
| /* For compatibility. */ |
| , PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_ADAPTIVE_NP |
| #endif |
| }; |
| |
| enum |
| { |
| PTHREAD_PROCESS_PRIVATE, |
| #define PTHREAD_PROCESS_PRIVATE PTHREAD_PROCESS_PRIVATE |
| PTHREAD_PROCESS_SHARED |
| #define PTHREAD_PROCESS_SHARED PTHREAD_PROCESS_SHARED |
| }; |
| |
| #if defined __USE_UNIX98 || defined __USE_XOPEN2K |
| enum |
| { |
| PTHREAD_RWLOCK_PREFER_READER_NP, |
| PTHREAD_RWLOCK_PREFER_WRITER_NP, |
| PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, |
| PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_WRITER_NP |
| }; |
| #endif /* Unix98 */ |
| |
| #define PTHREAD_ONCE_INIT 0 |
| |
| /* Special constants */ |
| |
| #ifdef __USE_XOPEN2K |
| /* -1 is distinct from 0 and all errno constants */ |
| # define PTHREAD_BARRIER_SERIAL_THREAD -1 |
| #endif |
| |
| /* Cleanup buffers */ |
| |
| struct _pthread_cleanup_buffer |
| { |
| void (*__routine) (void *); /* Function to call. */ |
| void *__arg; /* Its argument. */ |
| int __canceltype; /* Saved cancellation type. */ |
| struct _pthread_cleanup_buffer *__prev; /* Chaining of cleanup functions. */ |
| }; |
| |
| /* Cancellation */ |
| |
| enum |
| { |
| PTHREAD_CANCEL_ENABLE, |
| #define PTHREAD_CANCEL_ENABLE PTHREAD_CANCEL_ENABLE |
| PTHREAD_CANCEL_DISABLE |
| #define PTHREAD_CANCEL_DISABLE PTHREAD_CANCEL_DISABLE |
| }; |
| enum |
| { |
| PTHREAD_CANCEL_DEFERRED, |
| #define PTHREAD_CANCEL_DEFERRED PTHREAD_CANCEL_DEFERRED |
| PTHREAD_CANCEL_ASYNCHRONOUS |
| #define PTHREAD_CANCEL_ASYNCHRONOUS PTHREAD_CANCEL_ASYNCHRONOUS |
| }; |
| #define PTHREAD_CANCELED ((void *) -1) |
| |
| |
| /* Function for handling threads. */ |
| |
| /* Create a thread with given attributes ATTR (or default attributes |
| if ATTR is NULL), and call function START_ROUTINE with given |
| arguments ARG. */ |
| extern int pthread_create (pthread_t *__restrict __threadp, |
| __const pthread_attr_t *__restrict __attr, |
| void *(*__start_routine) (void *), |
| void *__restrict __arg) __THROW; |
| |
| /* Obtain the identifier of the current thread. */ |
| extern pthread_t pthread_self (void) __THROW; |
| |
| /* Compare two thread identifiers. */ |
| extern int pthread_equal (pthread_t __thread1, pthread_t __thread2) __THROW; |
| |
| /* Terminate calling thread. */ |
| extern void pthread_exit (void *__retval) __attribute__ ((__noreturn__)); |
| |
| /* Make calling thread wait for termination of the thread TH. The |
| exit status of the thread is stored in *THREAD_RETURN, if THREAD_RETURN |
| is not NULL. */ |
| extern int pthread_join (pthread_t __th, void **__thread_return); |
| |
| /* Indicate that the thread TH is never to be joined with PTHREAD_JOIN. |
| The resources of TH will therefore be freed immediately when it |
| terminates, instead of waiting for another thread to perform PTHREAD_JOIN |
| on it. */ |
| extern int pthread_detach (pthread_t __th) __THROW; |
| |
| |
| /* Functions for handling attributes. */ |
| |
| /* Initialize thread attribute *ATTR with default attributes |
| (detachstate is PTHREAD_JOINABLE, scheduling policy is SCHED_OTHER, |
| no user-provided stack). */ |
| extern int pthread_attr_init (pthread_attr_t *__attr) __THROW; |
| |
| /* Destroy thread attribute *ATTR. */ |
| extern int pthread_attr_destroy (pthread_attr_t *__attr) __THROW; |
| |
| /* Set the `detachstate' attribute in *ATTR according to DETACHSTATE. */ |
| extern int pthread_attr_setdetachstate (pthread_attr_t *__attr, |
| int __detachstate) __THROW; |
| |
| /* Return in *DETACHSTATE the `detachstate' attribute in *ATTR. */ |
| extern int pthread_attr_getdetachstate (__const pthread_attr_t *__attr, |
| int *__detachstate) __THROW; |
| |
| /* Set scheduling parameters (priority, etc) in *ATTR according to PARAM. */ |
| extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr, |
| __const struct sched_param *__restrict |
| __param) __THROW; |
| |
| /* Return in *PARAM the scheduling parameters of *ATTR. */ |
| extern int pthread_attr_getschedparam (__const pthread_attr_t *__restrict |
| __attr, |
| struct sched_param *__restrict __param) |
| __THROW; |
| |
| /* Set scheduling policy in *ATTR according to POLICY. */ |
| extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy) |
| __THROW; |
| |
| /* Return in *POLICY the scheduling policy of *ATTR. */ |
| extern int pthread_attr_getschedpolicy (__const pthread_attr_t *__restrict |
| __attr, int *__restrict __policy) |
| __THROW; |
| |
| /* Set scheduling inheritance mode in *ATTR according to INHERIT. */ |
| extern int pthread_attr_setinheritsched (pthread_attr_t *__attr, |
| int __inherit) __THROW; |
| |
| /* Return in *INHERIT the scheduling inheritance mode of *ATTR. */ |
| extern int pthread_attr_getinheritsched (__const pthread_attr_t *__restrict |
| __attr, int *__restrict __inherit) |
| __THROW; |
| |
| /* Set scheduling contention scope in *ATTR according to SCOPE. */ |
| extern int pthread_attr_setscope (pthread_attr_t *__attr, int __scope) |
| __THROW; |
| |
| /* Return in *SCOPE the scheduling contention scope of *ATTR. */ |
| extern int pthread_attr_getscope (__const pthread_attr_t *__restrict __attr, |
| int *__restrict __scope) __THROW; |
| |
| #ifdef __USE_UNIX98 |
| /* Set the size of the guard area at the bottom of the thread. */ |
| extern int pthread_attr_setguardsize (pthread_attr_t *__attr, |
| size_t __guardsize) __THROW; |
| |
| /* Get the size of the guard area at the bottom of the thread. */ |
| extern int pthread_attr_getguardsize (__const pthread_attr_t *__restrict |
| __attr, size_t *__restrict __guardsize) |
| __THROW; |
| #endif |
| |
| #if 0 /* uClibc: deprecated stuff disabled. def __UCLIBC_SUSV3_LEGACY__ */ |
| /* Set the starting address of the stack of the thread to be created. |
| Depending on whether the stack grows up or down the value must either |
| be higher or lower than all the address in the memory block. The |
| minimal size of the block must be PTHREAD_STACK_SIZE. */ |
| extern int pthread_attr_setstackaddr (pthread_attr_t *__attr, |
| void *__stackaddr) __THROW; |
| |
| /* Return the previously set address for the stack. */ |
| extern int pthread_attr_getstackaddr (__const pthread_attr_t *__restrict |
| __attr, void **__restrict __stackaddr) |
| __THROW; |
| #endif |
| |
| #ifdef __USE_XOPEN2K |
| /* The following two interfaces are intended to replace the last two. They |
| require setting the address as well as the size since only setting the |
| address will make the implementation on some architectures impossible. */ |
| extern int pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr, |
| size_t __stacksize) __THROW; |
| |
| /* Return the previously set address for the stack. */ |
| extern int pthread_attr_getstack (__const pthread_attr_t *__restrict __attr, |
| void **__restrict __stackaddr, |
| size_t *__restrict __stacksize) __THROW; |
| #endif |
| |
| /* Add information about the minimum stack size needed for the thread |
| to be started. This size must never be less than PTHREAD_STACK_SIZE |
| and must also not exceed the system limits. */ |
| extern int pthread_attr_setstacksize (pthread_attr_t *__attr, |
| size_t __stacksize) __THROW; |
| |
| /* Return the currently used minimal stack size. */ |
| extern int pthread_attr_getstacksize (__const pthread_attr_t *__restrict |
| __attr, size_t *__restrict __stacksize) |
| __THROW; |
| |
| #if 0 |
| /* Not yet implemented in uClibc! */ |
| |
| #ifdef __USE_GNU |
| /* Initialize thread attribute *ATTR with attributes corresponding to the |
| already running thread TH. It shall be called on uninitialized ATTR |
| and destroyed with pthread_attr_destroy when no longer needed. */ |
| extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr) __THROW; |
| #endif |
| #endif |
| |
| /* Functions for scheduling control. */ |
| |
| /* Set the scheduling parameters for TARGET_THREAD according to POLICY |
| and *PARAM. */ |
| extern int pthread_setschedparam (pthread_t __target_thread, int __policy, |
| __const struct sched_param *__param) |
| __THROW; |
| |
| /* Return in *POLICY and *PARAM the scheduling parameters for TARGET_THREAD. */ |
| extern int pthread_getschedparam (pthread_t __target_thread, |
| int *__restrict __policy, |
| struct sched_param *__restrict __param) |
| __THROW; |
| |
| #ifdef __USE_UNIX98 |
| /* Determine level of concurrency. */ |
| extern int pthread_getconcurrency (void) __THROW; |
| |
| /* Set new concurrency level to LEVEL. */ |
| extern int pthread_setconcurrency (int __level) __THROW; |
| #endif |
| |
| #ifdef __USE_GNU |
| /* Same thing, different name */ |
| #define pthread_yield() sched_yield() |
| #endif |
| |
| /* Functions for mutex handling. */ |
| |
| /* Initialize MUTEX using attributes in *MUTEX_ATTR, or use the |
| default values if later is NULL. */ |
| extern int pthread_mutex_init (pthread_mutex_t *__restrict __mutex, |
| __const pthread_mutexattr_t *__restrict |
| __mutex_attr) __THROW; |
| |
| /* Destroy MUTEX. */ |
| extern int pthread_mutex_destroy (pthread_mutex_t *__mutex) __THROW; |
| |
| /* Try to lock MUTEX. */ |
| extern int pthread_mutex_trylock (pthread_mutex_t *__mutex) __THROW; |
| |
| /* 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); |
| |
| /* 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); |
| |
| /* 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; |
| |
| |
| #if defined __USE_UNIX98 || defined __USE_XOPEN2K |
| /* 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; |
| |
| # 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; |
| # endif |
| |
| /* 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; |
| |
| # ifdef __USE_XOPEN2K |
| /* 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 |
| |
| /* 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. |
| |
| The initialization functions might throw exception which is why |
| this function is not marked with __THROW. */ |
| extern int pthread_once (pthread_once_t *__once_control, |
| void (*__init_routine) (void)); |
| |
| |
| /* 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); |
| |
| /* 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); |
| |
| /* Cancel THREAD immediately or at the next possibility. */ |
| extern int pthread_cancel (pthread_t __cancelthread); |
| |
| /* 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); |
| |
| |
| /* 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; |
| 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; |
| 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 */ |
