include/pthread.h

   1 /*
   2  * Copyright (c) 1993, 1994 by Chris Provenzano, proven@mit.edu
   3  * Copyright (c) 1995-1998 by John Birrell <jb@cimlogic.com.au>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *  This product includes software developed by Chris Provenzano.
  17  * 4. The name of Chris Provenzano may not be used to endorse or promote
  18  *        products derived from this software without specific prior written
  19  *        permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY
  25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  27  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * $FreeBSD: src/include/pthread.h,v 1.20.2.4 2003/05/27 18:18:01 jdp Exp $
  34  * $DragonFly: src/include/pthread.h,v 1.10 2007/06/26 23:30:05 josepht Exp $
  35  */
  36 #ifndef _PTHREAD_H_
  37 #define _PTHREAD_H_
  38
  39 /*
  40  * Header files.
  41  */
  42 #include <sys/cdefs.h>
  43 #include <sys/types.h>
  44 #include <sys/time.h>
  45 #include <sys/signal.h>
  46 #include <limits.h>
  47 #include <sys/sched.h>
  48
  49 /*
  50  * Run-time invariant values:
  51  */
  52 #define PTHREAD_DESTRUCTOR_ITERATIONS           4
  53 #define PTHREAD_KEYS_MAX                        256
  54 #define PTHREAD_STACK_MIN                       1024
  55 #define PTHREAD_THREADS_MAX                     ULONG_MAX
  56 #define PTHREAD_BARRIER_SERIAL_THREAD           -1
  57
  58 /*
  59  * Flags for threads and thread attributes.
  60  */
  61 #define PTHREAD_DETACHED            0x1
  62 #define PTHREAD_SCOPE_SYSTEM        0x2
  63 #define PTHREAD_INHERIT_SCHED       0x4
  64 #define PTHREAD_NOFLOAT             0x8
  65
  66 #define PTHREAD_CREATE_DETACHED     PTHREAD_DETACHED
  67 #define PTHREAD_CREATE_JOINABLE     0
  68 #define PTHREAD_SCOPE_PROCESS       0
  69 #define PTHREAD_EXPLICIT_SCHED      0
  70
  71 /*
  72  * Flags for read/write lock attributes
  73  */
  74 #define PTHREAD_PROCESS_PRIVATE     0
  75 #define PTHREAD_PROCESS_SHARED      1
  76
  77 /*
  78  * Flags for cancelling threads
  79  */
  80 #define PTHREAD_CANCEL_ENABLE           0
  81 #define PTHREAD_CANCEL_DISABLE          1
  82 #define PTHREAD_CANCEL_DEFERRED         0
  83 #define PTHREAD_CANCEL_ASYNCHRONOUS     2
  84 #define PTHREAD_CANCELED                ((void *) 1)
  85
  86 /*
  87  * Flags for once initialization.
  88  */
  89 #define PTHREAD_NEEDS_INIT  0
  90 #define PTHREAD_DONE_INIT   1
  91
  92 /*
  93  * Static once initialization values.
  94  */
  95 #define PTHREAD_ONCE_INIT   { PTHREAD_NEEDS_INIT, NULL }
  96
  97 /*
  98  * Static initialization values.
  99  */
 100 #define PTHREAD_MUTEX_INITIALIZER       NULL
 101 #define PTHREAD_COND_INITIALIZER        NULL
 102 #define PTHREAD_RWLOCK_INITIALIZER      NULL
 103
 104 /*
 105  * Default attribute arguments (draft 4, deprecated).
 106  */
 107 #ifndef PTHREAD_KERNEL
 108 #define pthread_condattr_default    NULL
 109 #define pthread_mutexattr_default   NULL
 110 #define pthread_attr_default        NULL
 111 #endif
 112
 113 #define PTHREAD_PRIO_NONE       0
 114 #define PTHREAD_PRIO_INHERIT    1
 115 #define PTHREAD_PRIO_PROTECT    2
 116
 117 /*
 118  * Mutex types (Single UNIX Specification, Version 2, 1997).
 119  *
 120  * Note that a mutex attribute with one of the following types:
 121  *
 122  *      PTHREAD_MUTEX_NORMAL
 123  *      PTHREAD_MUTEX_RECURSIVE
 124  *      MUTEX_TYPE_FAST (deprecated)
 125  *      MUTEX_TYPE_COUNTING_FAST (deprecated)
 126  *
 127  * will deviate from POSIX specified semantics.
 128  */
 129 enum pthread_mutextype {
 130         PTHREAD_MUTEX_ERRORCHECK        = 1,    /* Default POSIX mutex */
 131         PTHREAD_MUTEX_RECURSIVE         = 2,    /* Recursive mutex */
 132         PTHREAD_MUTEX_NORMAL            = 3,    /* No error checking */
 133         MUTEX_TYPE_MAX
 134 };
 135
 136 #define PTHREAD_MUTEX_DEFAULT           PTHREAD_MUTEX_ERRORCHECK
 137 #define MUTEX_TYPE_FAST                 PTHREAD_MUTEX_NORMAL
 138 #define MUTEX_TYPE_COUNTING_FAST        PTHREAD_MUTEX_RECURSIVE
 139
 140 /*
 141  * Thread function prototype definitions:
 142  */
 143 __BEGIN_DECLS
 144 int             pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
 145 int             pthread_attr_destroy(pthread_attr_t *);
 146 int             pthread_attr_getguardsize(const pthread_attr_t * __restrict,
 147                         size_t *);
 148 int             pthread_attr_getstack(const pthread_attr_t * __restrict,
 149                                       void ** __restrict, size_t * __restrict);
 150 int             pthread_attr_getstacksize(const pthread_attr_t *, size_t *);
 151 int             pthread_attr_getstackaddr(const pthread_attr_t *, void **);
 152 int             pthread_attr_getdetachstate(const pthread_attr_t *, int *);
 153 int             pthread_attr_init(pthread_attr_t *);
 154 int             pthread_attr_setguardsize(pthread_attr_t *, size_t);
 155 int             pthread_attr_setstack(pthread_attr_t *, void *, size_t);
 156 int             pthread_attr_setstacksize(pthread_attr_t *, size_t);
 157 int             pthread_attr_setstackaddr(pthread_attr_t *, void *);
 158 int             pthread_attr_setdetachstate(pthread_attr_t *, int);
 159 int             pthread_barrier_destroy(pthread_barrier_t *);
 160 int             pthread_barrier_init(pthread_barrier_t *,
 161                         const pthread_barrierattr_t *, unsigned);
 162 int             pthread_barrier_wait(pthread_barrier_t *);
 163 int             pthread_barrierattr_destroy(pthread_barrierattr_t *);
 164 int             pthread_barrierattr_init(pthread_barrierattr_t *);
 165 #if defined(_POSIX_THREAD_PROCESS_SHARED)
 166 int             pthread_barrierattr_getpshared(const pthread_barrierattr_t *,
 167                         int *);
 168 int             pthread_barrierattr_setpshared(pthread_barrierattr_t *, int);
 169 #endif
 170 void            pthread_cleanup_pop(int);
 171 void            pthread_cleanup_push(void (*) (void *), void *);
 172 int             pthread_condattr_destroy(pthread_condattr_t *);
 173 int             pthread_condattr_init(pthread_condattr_t *);
 174
 175 #if defined(_POSIX_THREAD_PROCESS_SHARED)
 176 int             pthread_condattr_getpshared(pthread_condattr_t *, int *);
 177 int             pthread_condattr_setpshared(pthread_condattr_t *, int);
 178 #endif
 179
 180 int             pthread_condattr_getclock(const pthread_condattr_t *, clockid_t *);
 181 int             pthread_condattr_setclock(pthread_condattr_t *, clockid_t);
 182
 183 int             pthread_cond_broadcast(pthread_cond_t *);
 184 int             pthread_cond_destroy(pthread_cond_t *);
 185 int             pthread_cond_init(pthread_cond_t *,
 186                                   const pthread_condattr_t *);
 187 int             pthread_cond_signal(pthread_cond_t *);
 188 int             pthread_cond_timedwait(pthread_cond_t *, pthread_mutex_t *,
 189                                        const struct timespec *);
 190 int             pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *);
 191 int             pthread_create(pthread_t *, const pthread_attr_t *,
 192                                void *(*) (void *), void *);
 193 int             pthread_detach(pthread_t);
 194 int             pthread_equal(pthread_t, pthread_t);
 195 void            pthread_exit(void *) __dead2;
 196 void            *pthread_getspecific(pthread_key_t);
 197 int             pthread_join(pthread_t, void **);
 198 int             pthread_key_create(pthread_key_t *, void (*) (void *));
 199 int             pthread_key_delete(pthread_key_t);
 200 int             pthread_kill(pthread_t, int);
 201 int             pthread_mutexattr_init(pthread_mutexattr_t *);
 202 int             pthread_mutexattr_destroy(pthread_mutexattr_t *);
 203 int             pthread_mutexattr_gettype(pthread_mutexattr_t *, int *);
 204 int             pthread_mutexattr_settype(pthread_mutexattr_t *, int);
 205 int             pthread_mutex_destroy(pthread_mutex_t *);
 206 int             pthread_mutex_init(pthread_mutex_t *,
 207                                    const pthread_mutexattr_t *);
 208 int             pthread_mutex_lock(pthread_mutex_t *);
 209 int             pthread_mutex_timedlock(pthread_mutex_t *,
 210                                         const struct timespec *);
 211 int             pthread_mutex_trylock(pthread_mutex_t *);
 212 int             pthread_mutex_unlock(pthread_mutex_t *);
 213 int             pthread_once(pthread_once_t *, void (*) (void));
 214 int             pthread_rwlock_destroy(pthread_rwlock_t *);
 215 int             pthread_rwlock_init(pthread_rwlock_t *,
 216                                     const pthread_rwlockattr_t *);
 217 int             pthread_rwlock_rdlock(pthread_rwlock_t *);
 218 int             pthread_rwlock_timedrdlock(pthread_rwlock_t *,
 219                                     const struct timespec *);
 220 int             pthread_rwlock_tryrdlock(pthread_rwlock_t *);
 221 int             pthread_rwlock_trywrlock(pthread_rwlock_t *);
 222 int             pthread_rwlock_unlock(pthread_rwlock_t *);
 223 int             pthread_rwlock_wrlock(pthread_rwlock_t *);
 224 int             pthread_rwlock_timedwrlock(pthread_rwlock_t *,
 225                                     const struct timespec *);
 226 int             pthread_rwlockattr_init(pthread_rwlockattr_t *);
 227 int             pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *,
 228                                               int *);
 229 int             pthread_rwlockattr_setpshared(pthread_rwlockattr_t *, int);
 230 int             pthread_rwlockattr_destroy(pthread_rwlockattr_t *);
 231 pthread_t       pthread_self(void);
 232 int             pthread_setspecific(pthread_key_t, const void *);
 233 int             pthread_sigmask(int, const sigset_t *, sigset_t *);
 234
 235 int             pthread_cancel(pthread_t);
 236 int             pthread_setcancelstate(int, int *);
 237 int             pthread_setcanceltype(int, int *);
 238 void            pthread_testcancel(void);
 239
 240 int             pthread_getprio(pthread_t);
 241 int             pthread_setprio(pthread_t, int);
 242 void            pthread_yield(void);
 243
 244 #if defined(_POSIX_THREAD_PROCESS_SHARED)
 245 int             pthread_mutexattr_getpshared(pthread_mutexattr_t *, int *);
 246 int             pthread_mutexattr_setpshared(pthread_mutexattr_t *, int);
 247 #endif
 248
 249 int             pthread_mutexattr_getprioceiling(pthread_mutexattr_t *, int *);
 250 int             pthread_mutexattr_setprioceiling(pthread_mutexattr_t *, int);
 251 int             pthread_mutex_getprioceiling(pthread_mutex_t *, int *);
 252 int             pthread_mutex_setprioceiling(pthread_mutex_t *, int, int *);
 253
 254 int             pthread_mutexattr_getprotocol(pthread_mutexattr_t *, int *);
 255 int             pthread_mutexattr_setprotocol(pthread_mutexattr_t *, int);
 256
 257 int             pthread_attr_getinheritsched(const pthread_attr_t *, int *);
 258 int             pthread_attr_getschedparam(const pthread_attr_t *,
 259                                            struct sched_param *);
 260 int             pthread_attr_getschedpolicy(const pthread_attr_t *, int *);
 261 int             pthread_attr_getscope(const pthread_attr_t *, int *);
 262 int             pthread_attr_setinheritsched(pthread_attr_t *, int);
 263 int             pthread_attr_setschedparam(pthread_attr_t *,
 264                                            const struct sched_param *);
 265 int             pthread_attr_setschedpolicy(pthread_attr_t *, int);
 266 int             pthread_attr_setscope(pthread_attr_t *, int);
 267 int             pthread_getschedparam(pthread_t pthread, int *,
 268                                       struct sched_param *);
 269 int             pthread_setschedparam(pthread_t, int,
 270                                       const struct sched_param *);
 271 int             pthread_getconcurrency(void);
 272 int             pthread_setconcurrency(int);
 273
 274 int             pthread_attr_setfloatstate(pthread_attr_t *, int);
 275 int             pthread_attr_getfloatstate(pthread_attr_t *, int *);
 276 __END_DECLS
 277
 278 #endif