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NetBSD/lib/libpthread/pthread.h

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/* $NetBSD: pthread.h,v 1.41 2018/02/20 05:10:51 kamil Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Nathan J. Williams.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LIB_PTHREAD_H
#define _LIB_PTHREAD_H
#include <sys/cdefs.h>
#include <time.h> /* For timespec */
#include <sched.h>
#include <sys/featuretest.h>
#include <pthread_types.h>
__BEGIN_DECLS
#ifndef __PTHREAD_ATFORK_DECLARED
#define __PTHREAD_ATFORK_DECLARED
int pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
#endif
int pthread_create(pthread_t * __restrict,
const pthread_attr_t * __restrict, void *(*)(void *),
void * __restrict);
void pthread_exit(void *) __attribute__((__noreturn__));
int pthread_join(pthread_t, void **);
int pthread_equal(pthread_t, pthread_t);
pthread_t pthread_self(void);
int pthread_detach(pthread_t);
int pthread_getrrtimer_np(void);
int pthread_setrrtimer_np(int);
int pthread_attr_init(pthread_attr_t *);
int pthread_attr_destroy(pthread_attr_t *);
int pthread_attr_get_np(pthread_t, pthread_attr_t *);
int pthread_attr_getguardsize(const pthread_attr_t * __restrict,
size_t * __restrict);
int pthread_attr_setguardsize(pthread_attr_t *, size_t);
int pthread_attr_getinheritsched(const pthread_attr_t * __restrict,
int * __restrict);
int pthread_attr_setinheritsched(pthread_attr_t *, int);
int pthread_attr_getschedparam(const pthread_attr_t * __restrict,
struct sched_param * __restrict);
int pthread_attr_setschedparam(pthread_attr_t * __restrict,
const struct sched_param * __restrict);
int pthread_attr_getschedpolicy(const pthread_attr_t * __restrict,
int * __restrict);
int pthread_attr_setschedpolicy(pthread_attr_t *, int);
int pthread_attr_getscope(const pthread_attr_t * __restrict,
int * __restrict);
int pthread_attr_setscope(pthread_attr_t *, int);
int pthread_attr_getstack(const pthread_attr_t * __restrict,
void ** __restrict, size_t * __restrict);
int pthread_attr_setstack(pthread_attr_t *, void *, size_t);
int pthread_attr_getstacksize(const pthread_attr_t * __restrict,
size_t * __restrict);
int pthread_attr_setstacksize(pthread_attr_t *, size_t);
int pthread_attr_getstackaddr(const pthread_attr_t * __restrict,
void ** __restrict);
int pthread_attr_setstackaddr(pthread_attr_t *, void *);
int pthread_attr_getdetachstate(const pthread_attr_t *, int *);
int pthread_attr_setdetachstate(pthread_attr_t *, int);
int pthread_attr_getname_np(const pthread_attr_t *, char *,
size_t, void **);
int pthread_attr_setname_np(pthread_attr_t *, const char *, void *);
int pthread_mutex_init(pthread_mutex_t * __restrict,
const pthread_mutexattr_t * __restrict);
int pthread_mutex_destroy(pthread_mutex_t *);
int pthread_mutex_lock(pthread_mutex_t *);
int pthread_mutex_trylock(pthread_mutex_t *);
int pthread_mutex_unlock(pthread_mutex_t *);
#ifndef __LIBC12_SOURCE__
int pthread_mutex_timedlock(pthread_mutex_t * __restrict,
const struct timespec * __restrict);
#endif
int pthread_mutex_getprioceiling(const pthread_mutex_t * __restrict,
int * __restrict);
int pthread_mutex_setprioceiling(pthread_mutex_t * __restrict, int,
int * __restrict);
int pthread_mutexattr_init(pthread_mutexattr_t *);
int pthread_mutexattr_destroy(pthread_mutexattr_t *);
#ifdef _PTHREAD_PSHARED
int pthread_mutexattr_getpshared(const pthread_mutexattr_t * __restrict,
int * __restrict);
int pthread_mutexattr_setpshared(pthread_mutexattr_t *, int);
#endif
int pthread_mutexattr_gettype(const pthread_mutexattr_t * __restrict,
int * __restrict);
int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int);
int pthread_mutexattr_getprotocol(const pthread_mutexattr_t * __restrict,
int * __restrict);
int pthread_mutexattr_setprotocol(pthread_mutexattr_t*,
int);
int pthread_mutexattr_getprioceiling(const pthread_mutexattr_t * __restrict,
int * __restrict);
int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *,
int);
int pthread_cond_init(pthread_cond_t * __restrict,
const pthread_condattr_t * __restrict);
int pthread_cond_destroy(pthread_cond_t *);
int pthread_cond_wait(pthread_cond_t * __restrict,
pthread_mutex_t * __restrict);
#ifndef __LIBC12_SOURCE__
int pthread_cond_timedwait(pthread_cond_t * __restrict,
pthread_mutex_t * __restrict, const struct timespec * __restrict);
#endif
int pthread_cond_signal(pthread_cond_t *);
int pthread_cond_broadcast(pthread_cond_t *);
int pthread_condattr_init(pthread_condattr_t *);
int pthread_condattr_setclock(pthread_condattr_t *, clockid_t);
int pthread_condattr_getclock(const pthread_condattr_t * __restrict,
clockid_t * __restrict);
int pthread_condattr_destroy(pthread_condattr_t *);
#ifdef _PTHREAD_PSHARED
int pthread_condattr_getpshared(const pthread_condattr_t * __restrict,
int * __restrict);
int pthread_condattr_setpshared(pthread_condattr_t *, int);
#endif
int pthread_once(pthread_once_t *, void (*)(void));
int pthread_key_create(pthread_key_t *, void (*)(void *));
int pthread_key_delete(pthread_key_t);
int pthread_setspecific(pthread_key_t, const void *);
void* pthread_getspecific(pthread_key_t);
int pthread_cancel(pthread_t);
int pthread_setcancelstate(int, int *);
int pthread_setcanceltype(int, int *);
void pthread_testcancel(void);
int pthread_getname_np(pthread_t, char *, size_t);
int pthread_setname_np(pthread_t, const char *, void *);
int pthread_attr_setcreatesuspend_np(pthread_attr_t *);
int pthread_suspend_np(pthread_t);
int pthread_resume_np(pthread_t);
unsigned int pthread_curcpu_np(void);
int pthread_getcpuclockid(pthread_t, clockid_t *);
struct pthread_cleanup_store {
void *pad[4];
};
#define pthread_cleanup_push(routine, arg) \
{ \
struct pthread_cleanup_store __store; \
pthread__cleanup_push((routine),(arg), &__store);
#define pthread_cleanup_pop(execute) \
pthread__cleanup_pop((execute), &__store); \
}
void pthread__cleanup_push(void (*)(void *), void *, void *);
void pthread__cleanup_pop(int, void *);
int pthread_spin_init(pthread_spinlock_t *, int);
int pthread_spin_destroy(pthread_spinlock_t *);
int pthread_spin_lock(pthread_spinlock_t *);
int pthread_spin_trylock(pthread_spinlock_t *);
int pthread_spin_unlock(pthread_spinlock_t *);
int pthread_rwlock_init(pthread_rwlock_t * __restrict,
const pthread_rwlockattr_t * __restrict);
int pthread_rwlock_destroy(pthread_rwlock_t *);
int pthread_rwlock_rdlock(pthread_rwlock_t *);
int pthread_rwlock_tryrdlock(pthread_rwlock_t *);
int pthread_rwlock_wrlock(pthread_rwlock_t *);
int pthread_rwlock_trywrlock(pthread_rwlock_t *);
#ifndef __LIBC12_SOURCE__
int pthread_rwlock_timedrdlock(pthread_rwlock_t * __restrict,
const struct timespec * __restrict);
int pthread_rwlock_timedwrlock(pthread_rwlock_t * __restrict,
const struct timespec * __restrict);
#endif
int pthread_rwlock_unlock(pthread_rwlock_t *);
int pthread_rwlockattr_init(pthread_rwlockattr_t *);
int pthread_rwlockattr_destroy(pthread_rwlockattr_t *);
#ifdef _PTHREAD_PSHARED
int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t * __restrict,
int * __restrict);
int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *, int);
#endif
int pthread_barrier_init(pthread_barrier_t * __restrict,
const pthread_barrierattr_t * __restrict, unsigned int);
int pthread_barrier_wait(pthread_barrier_t *);
int pthread_barrier_destroy(pthread_barrier_t *);
int pthread_barrierattr_init(pthread_barrierattr_t *);
int pthread_barrierattr_destroy(pthread_barrierattr_t *);
#ifdef _PTHREAD_PSHARED
int pthread_barrierattr_getpshared(const pthread_barrierattr_t * __restrict,
int * __restrict);
int pthread_barrierattr_setpshared(pthread_barrierattr_t *, int);
#endif
int pthread_getschedparam(pthread_t, int * __restrict,
struct sched_param * __restrict);
int pthread_setschedparam(pthread_t, int, const struct sched_param *);
int pthread_setschedprio(pthread_t, int);
int *pthread__errno(void);
#if defined(_NETBSD_SOURCE)
int pthread_getaffinity_np(pthread_t, size_t, cpuset_t *);
int pthread_setaffinity_np(pthread_t, size_t, cpuset_t *);
int pthread_getattr_np(pthread_t, pthread_attr_t *);
int pthread_mutex_held_np(pthread_mutex_t *);
pthread_t pthread_mutex_owner_np(pthread_mutex_t *);
int pthread_rwlock_held_np(pthread_rwlock_t *);
int pthread_rwlock_wrheld_np(pthread_rwlock_t *);
int pthread_rwlock_rdheld_np(pthread_rwlock_t *);
int pthread_cond_has_waiters_np(pthread_cond_t *);
#endif /* _NETBSD_SOURCE */
__END_DECLS
#define PTHREAD_CREATE_JOINABLE 0
#define PTHREAD_CREATE_DETACHED 1
#define PTHREAD_INHERIT_SCHED 0
#define PTHREAD_EXPLICIT_SCHED 1
#define PTHREAD_SCOPE_PROCESS 0
#define PTHREAD_SCOPE_SYSTEM 1
#define PTHREAD_PROCESS_PRIVATE 0
#define PTHREAD_PROCESS_SHARED 1
#define PTHREAD_CANCEL_DEFERRED 0
#define PTHREAD_CANCEL_ASYNCHRONOUS 1
#define PTHREAD_CANCEL_ENABLE 0
#define PTHREAD_CANCEL_DISABLE 1
#define PTHREAD_BARRIER_SERIAL_THREAD 1234567
/*
* POSIX 1003.1-2001, section 2.5.9.3: "The symbolic constant
* PTHREAD_CANCELED expands to a constant expression of type (void *)
* whose value matches no pointer to an object in memory nor the value
* NULL."
*/
#define PTHREAD_CANCELED ((void *) 1)
/*
* Maximum length of a thread's name, including the terminating NUL.
*/
#define PTHREAD_MAX_NAMELEN_NP 32
/*
* Mutex attributes.
*/
#define PTHREAD_MUTEX_NORMAL 0
#define PTHREAD_MUTEX_ERRORCHECK 1
#define PTHREAD_MUTEX_RECURSIVE 2
#define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
#define PTHREAD_PRIO_NONE 0
#define PTHREAD_PRIO_INHERIT 1
#define PTHREAD_PRIO_PROTECT 2
#define PTHREAD_COND_INITIALIZER _PTHREAD_COND_INITIALIZER
#define PTHREAD_MUTEX_INITIALIZER _PTHREAD_MUTEX_INITIALIZER
#define PTHREAD_ONCE_INIT _PTHREAD_ONCE_INIT
#define PTHREAD_RWLOCK_INITIALIZER _PTHREAD_RWLOCK_INITIALIZER
#define PTHREAD_SPINLOCK_INITIALIZER _PTHREAD_SPINLOCK_INITIALIZER
/*
* Use macros to rename many pthread functions to the corresponding
* libc symbols which are either trivial/no-op stubs or the real
* thing, depending on whether libpthread is linked in to the
* program. This permits code, particularly libraries that do not
* directly use threads but want to be thread-safe in the presence of
* threaded callers, to use pthread mutexes and the like without
* unnecessairly including libpthread in their linkage.
*
* Left out of this list are functions that can't sensibly be trivial
* or no-op stubs in a single-threaded process (pthread_create,
* pthread_kill, pthread_detach), functions that normally block and
* wait for another thread to do something (pthread_join), and
* functions that don't make sense without the previous functions
* (pthread_attr_*). The pthread_cond_wait and pthread_cond_timedwait
* functions are useful in implementing certain protection mechanisms,
* though a non-buggy app shouldn't end up calling them in
* single-threaded mode.
*
* The rename is done as:
* #define pthread_foo __libc_foo
* instead of
* #define pthread_foo(x) __libc_foo((x))
* in order that taking the address of the function ("func =
* &pthread_foo;") continue to work.
*
* POSIX/SUSv3 requires that its functions exist as functions (even if
* macro versions exist) and specifically that "#undef pthread_foo" is
* legal and should not break anything. Code that does such will not
* successfully get the stub behavior implemented here and will
* require libpthread to be linked in.
*/
#ifndef __LIBPTHREAD_SOURCE__
__BEGIN_DECLS
int __libc_mutex_init(pthread_mutex_t * __restrict, const pthread_mutexattr_t * __restrict);
int __libc_mutex_lock(pthread_mutex_t *);
int __libc_mutex_trylock(pthread_mutex_t *);
int __libc_mutex_unlock(pthread_mutex_t *);
int __libc_mutex_destroy(pthread_mutex_t *);
int __libc_mutexattr_init(pthread_mutexattr_t *);
int __libc_mutexattr_settype(pthread_mutexattr_t *, int);
int __libc_mutexattr_destroy(pthread_mutexattr_t *);
__END_DECLS
#define pthread_mutex_init __libc_mutex_init
#define pthread_mutex_lock __libc_mutex_lock
#define pthread_mutex_trylock __libc_mutex_trylock
#define pthread_mutex_unlock __libc_mutex_unlock
#define pthread_mutex_destroy __libc_mutex_destroy
#define pthread_mutexattr_init __libc_mutexattr_init
#define pthread_mutexattr_settype __libc_mutexattr_settype
#define pthread_mutexattr_destroy __libc_mutexattr_destroy
__BEGIN_DECLS
int __libc_cond_init(pthread_cond_t * __restrict,
const pthread_condattr_t * __restrict);
int __libc_cond_signal(pthread_cond_t *);
int __libc_cond_broadcast(pthread_cond_t *);
int __libc_cond_wait(pthread_cond_t * __restrict,
pthread_mutex_t * __restrict);
#ifndef __LIBC12_SOURCE__
int __libc_cond_timedwait(pthread_cond_t * __restrict,
pthread_mutex_t * __restrict, const struct timespec * __restrict);
#endif
int __libc_cond_destroy(pthread_cond_t *);
__END_DECLS
#define pthread_cond_init __libc_cond_init
#define pthread_cond_signal __libc_cond_signal
#define pthread_cond_broadcast __libc_cond_broadcast
#define pthread_cond_wait __libc_cond_wait
#define pthread_cond_timedwait __libc_cond_timedwait
#define pthread_cond_destroy __libc_cond_destroy
__BEGIN_DECLS
int __libc_rwlock_init(pthread_rwlock_t * __restrict,
const pthread_rwlockattr_t * __restrict);
int __libc_rwlock_rdlock(pthread_rwlock_t *);
int __libc_rwlock_wrlock(pthread_rwlock_t *);
int __libc_rwlock_tryrdlock(pthread_rwlock_t *);
int __libc_rwlock_trywrlock(pthread_rwlock_t *);
int __libc_rwlock_unlock(pthread_rwlock_t *);
int __libc_rwlock_destroy(pthread_rwlock_t *);
__END_DECLS
#define pthread_rwlock_init __libc_rwlock_init
#define pthread_rwlock_rdlock __libc_rwlock_rdlock
#define pthread_rwlock_wrlock __libc_rwlock_wrlock
#define pthread_rwlock_tryrdlock __libc_rwlock_tryrdlock
#define pthread_rwlock_trywrlock __libc_rwlock_trywrlock
#define pthread_rwlock_unlock __libc_rwlock_unlock
#define pthread_rwlock_destroy __libc_rwlock_destroy
__BEGIN_DECLS
int __libc_thr_keycreate(pthread_key_t *, void (*)(void *));
int __libc_thr_setspecific(pthread_key_t, const void *);
void *__libc_thr_getspecific(pthread_key_t);
int __libc_thr_keydelete(pthread_key_t);
__END_DECLS
#define pthread_key_create __libc_thr_keycreate
#define pthread_setspecific __libc_thr_setspecific
#define pthread_getspecific __libc_thr_getspecific
#define pthread_key_delete __libc_thr_keydelete
__BEGIN_DECLS
int __libc_thr_once(pthread_once_t *, void (*)(void));
pthread_t __libc_thr_self(void);
void __libc_thr_exit(void *) __attribute__((__noreturn__));
int __libc_thr_setcancelstate(int, int *);
int __libc_thr_equal(pthread_t, pthread_t);
unsigned int __libc_thr_curcpu(void);
__END_DECLS
#define pthread_once __libc_thr_once
#define pthread_self __libc_thr_self
#define pthread_exit __libc_thr_exit
#define pthread_setcancelstate __libc_thr_setcancelstate
#define pthread_equal __libc_thr_equal
#define pthread_curcpu_np __libc_thr_curcpu
#endif /* __LIBPTHREAD_SOURCE__ */
#endif /* _LIB_PTHREAD_H */
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