1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1993, 1994 by Chris Provenzano, proven@mit.edu 5 * Copyright (c) 1995-1998 by John Birrell <jb@cimlogic.com.au> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Chris Provenzano. 19 * 4. The name of Chris Provenzano may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY 27 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 30 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 #ifndef _PTHREAD_H_ 36 #define _PTHREAD_H_ 37 38 /* 39 * Header files. 40 */ 41 #include <sys/cdefs.h> 42 #include <sys/_pthreadtypes.h> 43 #include <machine/_limits.h> 44 #include <sys/_types.h> 45 #include <sys/_sigset.h> 46 #include <sched.h> 47 #include <time.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 __MINSIGSTKSZ 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 * Values for process shared/private 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_ADAPTIVE_MUTEX_INITIALIZER_NP ((pthread_mutex_t)1) 102 #define PTHREAD_COND_INITIALIZER NULL 103 #define PTHREAD_RWLOCK_INITIALIZER NULL 104 105 /* 106 * Default attribute arguments (draft 4, deprecated). 107 */ 108 #ifndef PTHREAD_KERNEL 109 #define pthread_condattr_default NULL 110 #define pthread_mutexattr_default NULL 111 #define pthread_attr_default NULL 112 #endif 113 114 #define PTHREAD_PRIO_NONE 0 115 #define PTHREAD_PRIO_INHERIT 1 116 #define PTHREAD_PRIO_PROTECT 2 117 118 /* 119 * Mutex types (Single UNIX Specification, Version 2, 1997). 120 * 121 * Note that a mutex attribute with one of the following types: 122 * 123 * PTHREAD_MUTEX_NORMAL 124 * PTHREAD_MUTEX_RECURSIVE 125 * 126 * will deviate from POSIX specified semantics. 127 */ 128 enum pthread_mutextype { 129 PTHREAD_MUTEX_ERRORCHECK = 1, /* Default POSIX mutex */ 130 PTHREAD_MUTEX_RECURSIVE = 2, /* Recursive mutex */ 131 PTHREAD_MUTEX_NORMAL = 3, /* No error checking */ 132 PTHREAD_MUTEX_ADAPTIVE_NP = 4, /* Adaptive mutex, spins briefly before blocking on lock */ 133 PTHREAD_MUTEX_TYPE_MAX 134 }; 135 136 #define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_ERRORCHECK 137 138 #define PTHREAD_MUTEX_STALLED 0 139 #define PTHREAD_MUTEX_ROBUST 1 140 141 struct _pthread_cleanup_info { 142 __uintptr_t pthread_cleanup_pad[8]; 143 }; 144 145 /* 146 * Thread function prototype definitions: 147 */ 148 __BEGIN_DECLS 149 int pthread_atfork(void (*)(void), void (*)(void), void (*)(void)); 150 int pthread_attr_destroy(pthread_attr_t *); 151 int pthread_attr_getstack( 152 const pthread_attr_t * __restrict, void ** __restrict, 153 size_t * __restrict); 154 int pthread_attr_getstacksize(const pthread_attr_t * __restrict, 155 size_t * __restrict); 156 int pthread_attr_getguardsize(const pthread_attr_t * __restrict, 157 size_t * __restrict); 158 int pthread_attr_getstackaddr(const pthread_attr_t *, void **); 159 int pthread_attr_getdetachstate(const pthread_attr_t *, 160 int *); 161 int pthread_attr_init(pthread_attr_t *); 162 int pthread_attr_setstacksize(pthread_attr_t *, size_t); 163 int pthread_attr_setguardsize(pthread_attr_t *, size_t); 164 int pthread_attr_setstack(pthread_attr_t *, void *, 165 size_t); 166 int pthread_attr_setstackaddr(pthread_attr_t *, void *); 167 int pthread_attr_setdetachstate(pthread_attr_t *, int); 168 int pthread_barrier_destroy(pthread_barrier_t *); 169 int pthread_barrier_init(pthread_barrier_t * __restrict, 170 const pthread_barrierattr_t * __restrict, unsigned); 171 int pthread_barrier_wait(pthread_barrier_t *); 172 int pthread_barrierattr_destroy(pthread_barrierattr_t *); 173 int pthread_barrierattr_getpshared( 174 const pthread_barrierattr_t * __restrict, int * __restrict); 175 int pthread_barrierattr_init(pthread_barrierattr_t *); 176 int pthread_barrierattr_setpshared(pthread_barrierattr_t *, int); 177 178 #define pthread_cleanup_push(cleanup_routine, cleanup_arg) \ 179 { \ 180 struct _pthread_cleanup_info __cleanup_info__; \ 181 __pthread_cleanup_push_imp(cleanup_routine, cleanup_arg,\ 182 &__cleanup_info__); \ 183 { 184 185 #define pthread_cleanup_pop(execute) \ 186 (void)0; \ 187 } \ 188 __pthread_cleanup_pop_imp(execute); \ 189 } 190 191 int pthread_condattr_destroy(pthread_condattr_t *); 192 int pthread_condattr_getclock(const pthread_condattr_t * __restrict, 193 clockid_t * __restrict); 194 int pthread_condattr_getpshared(const pthread_condattr_t *, int *); 195 int pthread_condattr_init(pthread_condattr_t *); 196 int pthread_condattr_setclock(pthread_condattr_t *, clockid_t); 197 int pthread_condattr_setpshared(pthread_condattr_t *, int); 198 int pthread_cond_broadcast(pthread_cond_t *); 199 int pthread_cond_destroy(pthread_cond_t *); 200 int pthread_cond_init(pthread_cond_t * __restrict, 201 const pthread_condattr_t * __restrict); 202 int pthread_cond_signal(pthread_cond_t *); 203 int pthread_cond_timedwait(pthread_cond_t *, 204 pthread_mutex_t * __mutex, 205 const struct timespec *) 206 __requires_exclusive(*__mutex); 207 int pthread_cond_wait(pthread_cond_t * __restrict, 208 pthread_mutex_t * __restrict __mutex) 209 __requires_exclusive(*__mutex); 210 int pthread_create(pthread_t * __restrict, 211 const pthread_attr_t * __restrict, void *(*) (void *), 212 void * __restrict); 213 int pthread_detach(pthread_t); 214 int pthread_equal(pthread_t, pthread_t); 215 void pthread_exit(void *) __dead2; 216 void *pthread_getspecific(pthread_key_t); 217 int pthread_getcpuclockid(pthread_t, clockid_t *); 218 int pthread_join(pthread_t, void **); 219 int pthread_key_create(pthread_key_t *, void (*) (void *)); 220 int pthread_key_delete(pthread_key_t); 221 int pthread_mutexattr_init(pthread_mutexattr_t *); 222 int pthread_mutexattr_destroy(pthread_mutexattr_t *); 223 int pthread_mutexattr_getpshared( 224 const pthread_mutexattr_t * __restrict, 225 int * __restrict); 226 int pthread_mutexattr_gettype( 227 const pthread_mutexattr_t * __restrict, int * __restrict); 228 int pthread_mutexattr_settype(pthread_mutexattr_t *, int); 229 int pthread_mutexattr_setpshared(pthread_mutexattr_t *, int); 230 int pthread_mutex_consistent(pthread_mutex_t * __mutex) 231 __requires_exclusive(*__mutex); 232 int pthread_mutex_destroy(pthread_mutex_t * __mutex) 233 __requires_unlocked(*__mutex); 234 int pthread_mutex_init(pthread_mutex_t * __restrict __mutex, 235 const pthread_mutexattr_t * __restrict) 236 __requires_unlocked(*__mutex); 237 int pthread_mutex_lock(pthread_mutex_t * __mutex) 238 __locks_exclusive(*__mutex); 239 int pthread_mutex_trylock(pthread_mutex_t * __mutex) 240 __trylocks_exclusive(0, *__mutex); 241 int pthread_mutex_timedlock(pthread_mutex_t * __restrict __mutex, 242 const struct timespec * __restrict) 243 __trylocks_exclusive(0, *__mutex); 244 int pthread_mutex_unlock(pthread_mutex_t * __mutex) 245 __unlocks(*__mutex); 246 int pthread_once(pthread_once_t *, void (*) (void)); 247 int pthread_rwlock_destroy(pthread_rwlock_t * __rwlock) 248 __requires_unlocked(*__rwlock); 249 int pthread_rwlock_init(pthread_rwlock_t * __restrict __rwlock, 250 const pthread_rwlockattr_t * __restrict) 251 __requires_unlocked(*__rwlock); 252 int pthread_rwlock_rdlock(pthread_rwlock_t * __rwlock) 253 __locks_shared(*__rwlock); 254 int pthread_rwlock_timedrdlock( 255 pthread_rwlock_t * __restrict __rwlock, 256 const struct timespec * __restrict) 257 __trylocks_shared(0, *__rwlock); 258 int pthread_rwlock_timedwrlock( 259 pthread_rwlock_t * __restrict __rwlock, 260 const struct timespec * __restrict) 261 __trylocks_exclusive(0, *__rwlock); 262 int pthread_rwlock_tryrdlock(pthread_rwlock_t * __rwlock) 263 __trylocks_shared(0, *__rwlock); 264 int pthread_rwlock_trywrlock(pthread_rwlock_t * __rwlock) 265 __trylocks_exclusive(0, *__rwlock); 266 int pthread_rwlock_unlock(pthread_rwlock_t * __rwlock) 267 __unlocks(*__rwlock); 268 int pthread_rwlock_wrlock(pthread_rwlock_t * __rwlock) 269 __locks_exclusive(*__rwlock); 270 int pthread_rwlockattr_destroy(pthread_rwlockattr_t *); 271 int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t *, 272 int *); 273 int pthread_rwlockattr_getpshared( 274 const pthread_rwlockattr_t * __restrict, 275 int * __restrict); 276 int pthread_rwlockattr_init(pthread_rwlockattr_t *); 277 int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *, 278 int); 279 int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *, int); 280 pthread_t pthread_self(void); 281 int pthread_setspecific(pthread_key_t, const void *); 282 283 int pthread_spin_init(pthread_spinlock_t * __spin, int) 284 __requires_unlocked(*__spin); 285 int pthread_spin_destroy(pthread_spinlock_t * __spin) 286 __requires_unlocked(*__spin); 287 int pthread_spin_lock(pthread_spinlock_t * __spin) 288 __locks_exclusive(*__spin); 289 int pthread_spin_trylock(pthread_spinlock_t * __spin) 290 __trylocks_exclusive(0, *__spin); 291 int pthread_spin_unlock(pthread_spinlock_t * __spin) 292 __unlocks(*__spin); 293 int pthread_cancel(pthread_t); 294 int pthread_setcancelstate(int, int *); 295 int pthread_setcanceltype(int, int *); 296 void pthread_testcancel(void); 297 298 #if __BSD_VISIBLE 299 int pthread_getprio(pthread_t); 300 int pthread_setprio(pthread_t, int); 301 void pthread_yield(void); 302 303 int pthread_getname_np(pthread_t, char *, size_t); 304 int pthread_setname_np(pthread_t, const char *); 305 #endif 306 307 int pthread_mutexattr_getprioceiling( 308 const pthread_mutexattr_t * __restrict, 309 int * __restrict); 310 int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *, int); 311 int pthread_mutex_getprioceiling(const pthread_mutex_t * __restrict, 312 int * __restrict); 313 int pthread_mutex_setprioceiling(pthread_mutex_t * __restrict, int, 314 int * __restrict); 315 316 int pthread_mutexattr_getprotocol( 317 const pthread_mutexattr_t * __restrict, 318 int * __restrict); 319 int pthread_mutexattr_setprotocol(pthread_mutexattr_t *, int); 320 321 int pthread_mutexattr_getrobust( 322 pthread_mutexattr_t * __restrict, int * __restrict); 323 int pthread_mutexattr_setrobust(pthread_mutexattr_t *, int); 324 325 int pthread_attr_getinheritsched(const pthread_attr_t * __restrict, 326 int * __restrict); 327 int pthread_attr_getschedparam(const pthread_attr_t *, 328 struct sched_param *); 329 int pthread_attr_getschedpolicy(const pthread_attr_t * __restrict, 330 int * __restrict); 331 int pthread_attr_getscope(const pthread_attr_t * __restrict, 332 int * __restrict); 333 int pthread_attr_setinheritsched(pthread_attr_t *, int); 334 int pthread_attr_setschedparam(pthread_attr_t *, 335 const struct sched_param *); 336 int pthread_attr_setschedpolicy(pthread_attr_t *, int); 337 int pthread_attr_setscope(pthread_attr_t *, int); 338 int pthread_getschedparam(pthread_t pthread, int * __restrict, 339 struct sched_param * __restrict); 340 int pthread_setschedparam(pthread_t, int, 341 const struct sched_param *); 342 #if __XSI_VISIBLE 343 int pthread_getconcurrency(void); 344 int pthread_setconcurrency(int); 345 #endif 346 347 void __pthread_cleanup_push_imp(void (*)(void *), void *, 348 struct _pthread_cleanup_info *); 349 void __pthread_cleanup_pop_imp(int); 350 __END_DECLS 351 352 #endif /* !_PTHREAD_H_ */ 353