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pthread.h revision 1.1.2.13
      1 /*	$NetBSD: pthread.h,v 1.1.2.13 2002/10/27 23:35:01 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Nathan J. Williams.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _LIB_PTHREAD_H
     40 #define _LIB_PTHREAD_H
     41 
     42 #include <sys/cdefs.h>
     43 
     44 #include <time.h>	/* For timespec */
     45 #include <sched.h>
     46 #include <signal.h>	/* For sigset_t. XXX pthread_sigmask should
     47 			 * be in signal.h instead of here.
     48 			 */
     49 #include "pthread_types.h"
     50 #include <sched.h>
     51 
     52 __BEGIN_DECLS
     53 int	pthread_create(pthread_t *thread, const pthread_attr_t *attr,
     54 	    void *(*startfunc)(void *), void *arg);
     55 void	pthread_exit(void *retval) __attribute__((__noreturn__));
     56 int	pthread_join(pthread_t thread, void **valptr);
     57 int	pthread_equal(pthread_t t1, pthread_t t2);
     58 pthread_t	pthread_self(void);
     59 int	pthread_detach(pthread_t thread);
     60 
     61 int	pthread_kill(pthread_t thread, int sig);
     62 int	pthread_sigmask(int how, const sigset_t *set, sigset_t *oset);
     63 
     64 int	pthread_attr_destroy(pthread_attr_t *attr);
     65 int	pthread_attr_getdetachstate(pthread_attr_t *attr, int *detachstate);
     66 int	pthread_attr_init(pthread_attr_t *attr);
     67 int	pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate);
     68 int	pthread_attr_setschedparam(pthread_attr_t *attr,
     69 	    const struct sched_param *param);
     70 int	pthread_attr_getschedparam(pthread_attr_t *attr,
     71 	    struct sched_param *param);
     72 
     73 int	pthread_mutex_init(pthread_mutex_t *mutex,
     74 	    const pthread_mutexattr_t *attr);
     75 int	pthread_mutex_destroy(pthread_mutex_t *mutex);
     76 int	pthread_mutex_lock(pthread_mutex_t *mutex);
     77 int	pthread_mutex_trylock(pthread_mutex_t *mutex);
     78 int	pthread_mutex_unlock(pthread_mutex_t *mutex);
     79 int	pthread_mutexattr_init(pthread_mutexattr_t *attr);
     80 int	pthread_mutexattr_destroy(pthread_mutexattr_t *attr);
     81 
     82 int	pthread_cond_init(pthread_cond_t *cond,
     83 	    const pthread_condattr_t *attr);
     84 int	pthread_cond_destroy(pthread_cond_t *cond);
     85 int	pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
     86 int	pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
     87 	    const struct timespec *abstime);
     88 int	pthread_cond_signal(pthread_cond_t *cond);
     89 int	pthread_cond_broadcast(pthread_cond_t *cond);
     90 int	pthread_condattr_init(pthread_condattr_t *attr);
     91 int	pthread_condattr_destroy(pthread_condattr_t *attr);
     92 
     93 int	pthread_once(pthread_once_t *once_control, void (*routine)(void));
     94 
     95 int	pthread_key_create(pthread_key_t *key, void (*destructor)(void *));
     96 int	pthread_key_delete(pthread_key_t key);
     97 int	pthread_setspecific(pthread_key_t key, const void *value);
     98 void*	pthread_getspecific(pthread_key_t key);
     99 
    100 int	pthread_cancel(pthread_t thread);
    101 int	pthread_setcancelstate(int state, int *oldstate);
    102 int	pthread_setcanceltype(int type, int *oldtype);
    103 void	pthread_testcancel(void);
    104 
    105 struct pthread_cleanup_store {
    106 	void	*pad[4];
    107 };
    108 
    109 #define pthread_cleanup_push(routine,arg)			\
    110         {							\
    111 		struct pthread_cleanup_store __store;	\
    112 		pthread__cleanup_push((routine),(arg), &__store);
    113 
    114 #define pthread_cleanup_pop(execute)				\
    115 		pthread__cleanup_pop((execute), &__store);	\
    116 	}
    117 
    118 void	pthread__cleanup_push(void (*routine)(void *), void *arg, void *store);
    119 void	pthread__cleanup_pop(int execute, void *store);
    120 
    121 int	pthread_spin_init(pthread_spinlock_t *lock, int pshared);
    122 int	pthread_spin_destroy(pthread_spinlock_t *lock);
    123 int	pthread_spin_lock(pthread_spinlock_t *lock);
    124 int	pthread_spin_trylock(pthread_spinlock_t *lock);
    125 int	pthread_spin_unlock(pthread_spinlock_t *lock);
    126 
    127 int 	*pthread__errno(void);
    128 __END_DECLS
    129 
    130 #define	PTHREAD_CREATE_JOINABLE	0
    131 #define	PTHREAD_CREATE_DETACHED	1
    132 
    133 #define PTHREAD_PROCESS_PRIVATE	0
    134 #define PTHREAD_PROCESS_SHARED	1
    135 
    136 #define PTHREAD_CANCEL_DEFERRED		0
    137 #define PTHREAD_CANCEL_ASYNCHRONOUS	1
    138 
    139 #define PTHREAD_CANCEL_ENABLE		0
    140 #define PTHREAD_CANCEL_DISABLE		1
    141 
    142 /* POSIX 1003.1-2001, section 2.5.9.3: "The symbolic constant
    143  * PTHREAD_CANCELED expands to a constant expression of type (void *)
    144  * whose value matches no pointer to an object in memory nor the value
    145  * NULL."
    146  */
    147 #define PTHREAD_CANCELED	((void *) 1)
    148 
    149 #define	_POSIX_THREADS
    150 
    151 #define PTHREAD_DESTRUCTOR_ITERATIONS	4	/* Min. required */
    152 #define PTHREAD_KEYS_MAX	256
    153 #define PTHREAD_STACK_MIN	4096 /* XXX Pulled out of my butt */
    154 #define PTHREAD_THREADS_MAX	64		/* Min. required */
    155 
    156 typedef struct pthread_ops_st {
    157 	int (*mutex_init)(pthread_mutex_t *, const pthread_mutexattr_t *);
    158 	int (*mutex_lock)(pthread_mutex_t *);
    159 	int (*mutex_trylock)(pthread_mutex_t *);
    160 	int (*mutex_unlock)(pthread_mutex_t *);
    161 	int (*mutex_destroy)(pthread_mutex_t *);
    162        	int (*mutexattr_init)(pthread_mutexattr_t *);
    163 	int (*mutexattr_destroy)(pthread_mutexattr_t *);
    164 
    165 	int (*cond_init)(pthread_cond_t *, const pthread_condattr_t *);
    166 	int (*cond_signal)(pthread_cond_t *);
    167 	int (*cond_broadcast)(pthread_cond_t *);
    168 	int (*cond_wait)(pthread_cond_t *, pthread_mutex_t *);
    169 	int (*cond_timedwait)(pthread_cond_t *, pthread_mutex_t *,
    170 	    const struct timespec *);
    171 	int (*cond_destroy)(pthread_cond_t *);
    172        	int (*condattr_init)(pthread_condattr_t *);
    173 	int (*condattr_destroy)(pthread_condattr_t *);
    174 
    175 	int (*thr_keycreate)(pthread_key_t *, void (*)(void *));
    176 	int (*thr_setspecific)(pthread_key_t, const void *);
    177 	void *(*thr_getspecific)(pthread_key_t);
    178 	int (*thr_keydelete)(pthread_key_t);
    179 
    180 	int (*thr_once)(pthread_once_t *, void (*)(void));
    181 
    182 	pthread_t (*thr_self)(void);
    183 
    184 	int (*thr_sigsetmask)(int, const sigset_t *, sigset_t *);
    185 
    186 	int *(*thr_errno)(void);
    187 } pthread_ops_t;
    188 
    189 
    190 #endif /* _LIB_PTHREAD_H */
    191