1 /* 2 * Copyright (C) 2005 Daniel M. Eischen <deischen@freebsd.org> 3 * Copyright (c) 2005 David Xu <davidxu@freebsd.org> 4 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>. 5 * 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 unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _THR_PRIVATE_H 33 #define _THR_PRIVATE_H 34 35 /* 36 * Include files. 37 */ 38 #include <sys/types.h> 39 #include <sys/time.h> 40 #include <sys/cdefs.h> 41 #include <sys/queue.h> 42 #include <machine/atomic.h> 43 #include <errno.h> 44 #include <limits.h> 45 #include <signal.h> 46 #include <stddef.h> 47 #include <stdio.h> 48 #include <sched.h> 49 #include <unistd.h> 50 #include <ucontext.h> 51 #include <sys/thr.h> 52 #include <pthread.h> 53 54 #ifndef __hidden 55 #define __hidden __attribute__((visibility("hidden"))) 56 #endif 57 58 #include "pthread_md.h" 59 #include "thr_umtx.h" 60 #include "thread_db.h" 61 62 typedef TAILQ_HEAD(pthreadlist, pthread) pthreadlist; 63 typedef TAILQ_HEAD(atfork_head, pthread_atfork) atfork_head; 64 65 /* Signal to do cancellation */ 66 #define SIGCANCEL 32 67 68 /* 69 * Kernel fatal error handler macro. 70 */ 71 #define PANIC(string) _thread_exit(__FILE__,__LINE__,string) 72 73 /* Output debug messages like this: */ 74 #define stdout_debug(args...) _thread_printf(STDOUT_FILENO, ##args) 75 #define stderr_debug(args...) _thread_printf(STDOUT_FILENO, ##args) 76 77 #ifdef _PTHREADS_INVARIANTS 78 #define THR_ASSERT(cond, msg) do { \ 79 if (__predict_false(!(cond))) \ 80 PANIC(msg); \ 81 } while (0) 82 #else 83 #define THR_ASSERT(cond, msg) 84 #endif 85 86 #define TIMESPEC_ADD(dst, src, val) \ 87 do { \ 88 (dst)->tv_sec = (src)->tv_sec + (val)->tv_sec; \ 89 (dst)->tv_nsec = (src)->tv_nsec + (val)->tv_nsec; \ 90 if ((dst)->tv_nsec >= 1000000000) { \ 91 (dst)->tv_sec++; \ 92 (dst)->tv_nsec -= 1000000000; \ 93 } \ 94 } while (0) 95 96 #define TIMESPEC_SUB(dst, src, val) \ 97 do { \ 98 (dst)->tv_sec = (src)->tv_sec - (val)->tv_sec; \ 99 (dst)->tv_nsec = (src)->tv_nsec - (val)->tv_nsec; \ 100 if ((dst)->tv_nsec < 0) { \ 101 (dst)->tv_sec--; \ 102 (dst)->tv_nsec += 1000000000; \ 103 } \ 104 } while (0) 105 106 struct pthread_mutex { 107 /* 108 * Lock for accesses to this structure. 109 */ 110 volatile umtx_t m_lock; 111 enum pthread_mutextype m_type; 112 int m_protocol; 113 TAILQ_HEAD(mutex_head, pthread) m_queue; 114 struct pthread *m_owner; 115 long m_flags; 116 int m_count; 117 int m_refcount; 118 119 /* 120 * Used for priority inheritence and protection. 121 * 122 * m_prio - For priority inheritence, the highest active 123 * priority (threads locking the mutex inherit 124 * this priority). For priority protection, the 125 * ceiling priority of this mutex. 126 * m_saved_prio - mutex owners inherited priority before 127 * taking the mutex, restored when the owner 128 * unlocks the mutex. 129 */ 130 int m_prio; 131 int m_saved_prio; 132 133 /* 134 * Link for list of all mutexes a thread currently owns. 135 */ 136 TAILQ_ENTRY(pthread_mutex) m_qe; 137 }; 138 139 /* 140 * Flags for mutexes. 141 */ 142 #define MUTEX_FLAGS_PRIVATE 0x01 143 #define MUTEX_FLAGS_INITED 0x02 144 #define MUTEX_FLAGS_BUSY 0x04 145 146 struct pthread_mutex_attr { 147 enum pthread_mutextype m_type; 148 int m_protocol; 149 int m_ceiling; 150 long m_flags; 151 }; 152 153 #define PTHREAD_MUTEXATTR_STATIC_INITIALIZER \ 154 { PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, 0, MUTEX_FLAGS_PRIVATE } 155 156 struct pthread_cond { 157 /* 158 * Lock for accesses to this structure. 159 */ 160 volatile umtx_t c_lock; 161 volatile umtx_t c_seqno; 162 volatile int c_waiters; 163 volatile int c_wakeups; 164 int c_pshared; 165 int c_clockid; 166 }; 167 168 struct pthread_cond_attr { 169 int c_pshared; 170 int c_clockid; 171 }; 172 173 struct pthread_barrier { 174 volatile umtx_t b_lock; 175 volatile umtx_t b_cycle; 176 volatile int b_count; 177 volatile int b_waiters; 178 }; 179 180 struct pthread_barrierattr { 181 int pshared; 182 }; 183 184 struct pthread_spinlock { 185 volatile umtx_t s_lock; 186 }; 187 188 /* 189 * Flags for condition variables. 190 */ 191 #define COND_FLAGS_PRIVATE 0x01 192 #define COND_FLAGS_INITED 0x02 193 #define COND_FLAGS_BUSY 0x04 194 195 /* 196 * Cleanup definitions. 197 */ 198 struct pthread_cleanup { 199 struct pthread_cleanup *next; 200 void (*routine)(); 201 void *routine_arg; 202 int onstack; 203 }; 204 205 #define THR_CLEANUP_PUSH(td, func, arg) { \ 206 struct pthread_cleanup __cup; \ 207 \ 208 __cup.routine = func; \ 209 __cup.routine_arg = arg; \ 210 __cup.onstack = 1; \ 211 __cup.next = (td)->cleanup; \ 212 (td)->cleanup = &__cup; 213 214 #define THR_CLEANUP_POP(td, exec) \ 215 (td)->cleanup = __cup.next; \ 216 if ((exec) != 0) \ 217 __cup.routine(__cup.routine_arg); \ 218 } 219 220 struct pthread_atfork { 221 TAILQ_ENTRY(pthread_atfork) qe; 222 void (*prepare)(void); 223 void (*parent)(void); 224 void (*child)(void); 225 }; 226 227 struct pthread_attr { 228 int sched_policy; 229 int sched_inherit; 230 int sched_interval; 231 int prio; 232 int suspend; 233 #define THR_STACK_USER 0x100 /* 0xFF reserved for <pthread.h> */ 234 int flags; 235 void *arg_attr; 236 void (*cleanup_attr)(); 237 void *stackaddr_attr; 238 size_t stacksize_attr; 239 size_t guardsize_attr; 240 }; 241 242 /* 243 * Thread creation state attributes. 244 */ 245 #define THR_CREATE_RUNNING 0 246 #define THR_CREATE_SUSPENDED 1 247 248 /* 249 * Miscellaneous definitions. 250 */ 251 #define THR_STACK_DEFAULT (sizeof(void *) / 4 * 1024 * 1024) 252 253 /* 254 * Maximum size of initial thread's stack. This perhaps deserves to be larger 255 * than the stacks of other threads, since many applications are likely to run 256 * almost entirely on this stack. 257 */ 258 #define THR_STACK_INITIAL (THR_STACK_DEFAULT * 2) 259 260 /* 261 * Define the different priority ranges. All applications have thread 262 * priorities constrained within 0-31. The threads library raises the 263 * priority when delivering signals in order to ensure that signal 264 * delivery happens (from the POSIX spec) "as soon as possible". 265 * In the future, the threads library will also be able to map specific 266 * threads into real-time (cooperating) processes or kernel threads. 267 * The RT and SIGNAL priorities will be used internally and added to 268 * thread base priorities so that the scheduling queue can handle both 269 * normal and RT priority threads with and without signal handling. 270 * 271 * The approach taken is that, within each class, signal delivery 272 * always has priority over thread execution. 273 */ 274 #define THR_DEFAULT_PRIORITY 15 275 #define THR_MIN_PRIORITY 0 276 #define THR_MAX_PRIORITY 31 /* 0x1F */ 277 #define THR_SIGNAL_PRIORITY 32 /* 0x20 */ 278 #define THR_RT_PRIORITY 64 /* 0x40 */ 279 #define THR_FIRST_PRIORITY THR_MIN_PRIORITY 280 #define THR_LAST_PRIORITY \ 281 (THR_MAX_PRIORITY + THR_SIGNAL_PRIORITY + THR_RT_PRIORITY) 282 #define THR_BASE_PRIORITY(prio) ((prio) & THR_MAX_PRIORITY) 283 284 /* 285 * Time slice period in microseconds. 286 */ 287 #define TIMESLICE_USEC 20000 288 289 struct pthread_rwlockattr { 290 int pshared; 291 }; 292 293 struct pthread_rwlock { 294 pthread_mutex_t lock; /* monitor lock */ 295 pthread_cond_t read_signal; 296 pthread_cond_t write_signal; 297 int state; /* 0 = idle >0 = # of readers -1 = writer */ 298 int blocked_writers; 299 }; 300 301 /* 302 * Thread states. 303 */ 304 enum pthread_state { 305 PS_RUNNING, 306 PS_DEAD 307 }; 308 309 union pthread_wait_data { 310 pthread_mutex_t mutex; 311 }; 312 313 struct pthread_specific_elem { 314 const void *data; 315 int seqno; 316 }; 317 318 struct pthread_key { 319 volatile int allocated; 320 volatile int count; 321 int seqno; 322 void (*destructor)(void *); 323 }; 324 325 /* 326 * Thread structure. 327 */ 328 struct pthread { 329 /* 330 * Magic value to help recognize a valid thread structure 331 * from an invalid one: 332 */ 333 #define THR_MAGIC ((u_int32_t) 0xd09ba115) 334 u_int32_t magic; 335 char *name; 336 337 /* 338 * Lock for accesses to this thread structure. 339 */ 340 umtx_t lock; 341 342 /* Kernel thread id. */ 343 long tid; 344 #define TID_TERMINATED 1 345 346 /* Internal condition variable cycle number. */ 347 umtx_t cycle; 348 349 /* How many low level locks the thread held. */ 350 int locklevel; 351 352 /* Signal blocked counter. */ 353 int sigblock; 354 355 /* Queue entry for list of all threads. */ 356 TAILQ_ENTRY(pthread) tle; /* link for all threads in process */ 357 358 /* Queue entry for GC lists. */ 359 TAILQ_ENTRY(pthread) gcle; 360 361 /* Hash queue entry. */ 362 LIST_ENTRY(pthread) hle; 363 364 /* Threads reference count. */ 365 int refcount; 366 367 /* 368 * Thread start routine, argument, stack pointer and thread 369 * attributes. 370 */ 371 void *(*start_routine)(void *); 372 void *arg; 373 struct pthread_attr attr; 374 375 /* 376 * Cancelability flags 377 */ 378 #define THR_CANCEL_DISABLE 0x0001 379 #define THR_CANCEL_EXITING 0x0002 380 #define THR_CANCEL_AT_POINT 0x0004 381 #define THR_CANCEL_NEEDED 0x0008 382 #define SHOULD_CANCEL(val) \ 383 (((val) & (THR_CANCEL_DISABLE | THR_CANCEL_EXITING | \ 384 THR_CANCEL_NEEDED)) == THR_CANCEL_NEEDED) 385 386 #define SHOULD_ASYNC_CANCEL(val) \ 387 (((val) & (THR_CANCEL_DISABLE | THR_CANCEL_EXITING | \ 388 THR_CANCEL_NEEDED | THR_CANCEL_AT_POINT)) == \ 389 (THR_CANCEL_NEEDED | THR_CANCEL_AT_POINT)) 390 int cancelflags; 391 392 /* Thread temporary signal mask. */ 393 sigset_t sigmask; 394 395 /* Thread state: */ 396 umtx_t state; 397 398 /* 399 * Error variable used instead of errno. The function __error() 400 * returns a pointer to this. 401 */ 402 int error; 403 404 /* 405 * The joiner is the thread that is joining to this thread. The 406 * join status keeps track of a join operation to another thread. 407 */ 408 struct pthread *joiner; 409 410 /* 411 * The current thread can belong to a priority mutex queue. 412 * This is the synchronization queue link. 413 */ 414 TAILQ_ENTRY(pthread) sqe; 415 416 /* Wait data. */ 417 union pthread_wait_data data; 418 419 int sflags; 420 #define THR_FLAGS_IN_SYNCQ 0x0001 421 422 /* Miscellaneous flags; only set with scheduling lock held. */ 423 int flags; 424 #define THR_FLAGS_PRIVATE 0x0001 425 #define THR_FLAGS_NEED_SUSPEND 0x0002 /* thread should be suspended */ 426 #define THR_FLAGS_SUSPENDED 0x0004 /* thread is suspended */ 427 428 /* Thread list flags; only set with thread list lock held. */ 429 int tlflags; 430 #define TLFLAGS_GC_SAFE 0x0001 /* thread safe for cleaning */ 431 #define TLFLAGS_IN_TDLIST 0x0002 /* thread in all thread list */ 432 #define TLFLAGS_IN_GCLIST 0x0004 /* thread in gc list */ 433 #define TLFLAGS_DETACHED 0x0008 /* thread is detached */ 434 435 /* 436 * Base priority is the user setable and retrievable priority 437 * of the thread. It is only affected by explicit calls to 438 * set thread priority and upon thread creation via a thread 439 * attribute or default priority. 440 */ 441 char base_priority; 442 443 /* 444 * Inherited priority is the priority a thread inherits by 445 * taking a priority inheritence or protection mutex. It 446 * is not affected by base priority changes. Inherited 447 * priority defaults to and remains 0 until a mutex is taken 448 * that is being waited on by any other thread whose priority 449 * is non-zero. 450 */ 451 char inherited_priority; 452 453 /* 454 * Active priority is always the maximum of the threads base 455 * priority and inherited priority. When there is a change 456 * in either the base or inherited priority, the active 457 * priority must be recalculated. 458 */ 459 char active_priority; 460 461 /* Number of priority ceiling or protection mutexes owned. */ 462 int priority_mutex_count; 463 464 /* Queue of currently owned simple type mutexes. */ 465 TAILQ_HEAD(, pthread_mutex) mutexq; 466 467 /* Queue of currently owned priority type mutexs. */ 468 TAILQ_HEAD(, pthread_mutex) pri_mutexq; 469 470 void *ret; 471 struct pthread_specific_elem *specific; 472 int specific_data_count; 473 474 /* Number rwlocks rdlocks held. */ 475 int rdlock_count; 476 477 /* 478 * Current locks bitmap for rtld. */ 479 int rtld_bits; 480 481 /* Thread control block */ 482 struct tcb *tcb; 483 484 /* Cleanup handlers Link List */ 485 struct pthread_cleanup *cleanup; 486 487 /* Enable event reporting */ 488 int report_events; 489 490 /* Event mask */ 491 int event_mask; 492 493 /* Event */ 494 td_event_msg_t event_buf; 495 }; 496 497 #define THR_UMTX_TRYLOCK(thrd, lck) \ 498 _thr_umtx_trylock((lck), (thrd)->tid) 499 500 #define THR_UMTX_LOCK(thrd, lck) \ 501 _thr_umtx_lock((lck), (thrd)->tid) 502 503 #define THR_UMTX_TIMEDLOCK(thrd, lck, timo) \ 504 _thr_umtx_timedlock((lck), (thrd)->tid, (timo)) 505 506 #define THR_UMTX_UNLOCK(thrd, lck) \ 507 _thr_umtx_unlock((lck), (thrd)->tid) 508 509 #define THR_LOCK_ACQUIRE(thrd, lck) \ 510 do { \ 511 (thrd)->locklevel++; \ 512 _thr_umtx_lock(lck, (thrd)->tid); \ 513 } while (0) 514 515 #define THR_LOCK_RELEASE(thrd, lck) \ 516 do { \ 517 if ((thrd)->locklevel > 0) { \ 518 _thr_umtx_unlock((lck), (thrd)->tid); \ 519 (thrd)->locklevel--; \ 520 } else { \ 521 _thr_assert_lock_level(); \ 522 } \ 523 } while (0) 524 525 #define THR_LOCK(curthrd) THR_LOCK_ACQUIRE(curthrd, &(curthrd)->lock) 526 #define THR_UNLOCK(curthrd) THR_LOCK_RELEASE(curthrd, &(curthrd)->lock) 527 #define THR_THREAD_LOCK(curthrd, thr) THR_LOCK_ACQUIRE(curthrd, &(thr)->lock) 528 #define THR_THREAD_UNLOCK(curthrd, thr) THR_LOCK_RELEASE(curthrd, &(thr)->lock) 529 530 #define THREAD_LIST_LOCK(curthrd) \ 531 do { \ 532 THR_LOCK_ACQUIRE((curthrd), &_thr_list_lock); \ 533 } while (0) 534 535 #define THREAD_LIST_UNLOCK(curthrd) \ 536 do { \ 537 THR_LOCK_RELEASE((curthrd), &_thr_list_lock); \ 538 } while (0) 539 540 /* 541 * Macros to insert/remove threads to the all thread list and 542 * the gc list. 543 */ 544 #define THR_LIST_ADD(thrd) do { \ 545 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) == 0) { \ 546 TAILQ_INSERT_HEAD(&_thread_list, thrd, tle); \ 547 _thr_hash_add(thrd); \ 548 (thrd)->tlflags |= TLFLAGS_IN_TDLIST; \ 549 } \ 550 } while (0) 551 #define THR_LIST_REMOVE(thrd) do { \ 552 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) != 0) { \ 553 TAILQ_REMOVE(&_thread_list, thrd, tle); \ 554 _thr_hash_remove(thrd); \ 555 (thrd)->tlflags &= ~TLFLAGS_IN_TDLIST; \ 556 } \ 557 } while (0) 558 #define THR_GCLIST_ADD(thrd) do { \ 559 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) == 0) { \ 560 TAILQ_INSERT_HEAD(&_thread_gc_list, thrd, gcle);\ 561 (thrd)->tlflags |= TLFLAGS_IN_GCLIST; \ 562 _gc_count++; \ 563 } \ 564 } while (0) 565 #define THR_GCLIST_REMOVE(thrd) do { \ 566 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) != 0) { \ 567 TAILQ_REMOVE(&_thread_gc_list, thrd, gcle); \ 568 (thrd)->tlflags &= ~TLFLAGS_IN_GCLIST; \ 569 _gc_count--; \ 570 } \ 571 } while (0) 572 573 #define GC_NEEDED() (_gc_count >= 5) 574 575 #define THR_IN_SYNCQ(thrd) (((thrd)->sflags & THR_FLAGS_IN_SYNCQ) != 0) 576 577 #define SHOULD_REPORT_EVENT(curthr, e) \ 578 (curthr->report_events && \ 579 (((curthr)->event_mask | _thread_event_mask ) & e) != 0) 580 581 extern int __isthreaded; 582 583 /* 584 * Global variables for the pthread kernel. 585 */ 586 587 extern void *_usrstack __hidden; 588 extern struct pthread *_thr_initial __hidden; 589 extern int _thr_scope_system __hidden; 590 591 /* For debugger */ 592 extern int _libthr_debug; 593 extern int _thread_event_mask; 594 extern struct pthread *_thread_last_event; 595 596 /* List of all threads: */ 597 extern pthreadlist _thread_list; 598 599 /* List of threads needing GC: */ 600 extern pthreadlist _thread_gc_list __hidden; 601 602 extern int _thread_active_threads; 603 extern atfork_head _thr_atfork_list __hidden; 604 extern umtx_t _thr_atfork_lock __hidden; 605 606 /* Default thread attributes: */ 607 extern struct pthread_attr _pthread_attr_default __hidden; 608 609 /* Default mutex attributes: */ 610 extern struct pthread_mutex_attr _pthread_mutexattr_default __hidden; 611 612 /* Default condition variable attributes: */ 613 extern struct pthread_cond_attr _pthread_condattr_default __hidden; 614 615 extern pid_t _thr_pid __hidden; 616 extern int _thr_guard_default __hidden; 617 extern int _thr_stack_default __hidden; 618 extern int _thr_stack_initial __hidden; 619 extern int _thr_page_size __hidden; 620 /* Garbage thread count. */ 621 extern int _gc_count __hidden; 622 623 extern umtx_t _mutex_static_lock __hidden; 624 extern umtx_t _cond_static_lock __hidden; 625 extern umtx_t _rwlock_static_lock __hidden; 626 extern umtx_t _keytable_lock __hidden; 627 extern umtx_t _thr_list_lock __hidden; 628 extern umtx_t _thr_event_lock __hidden; 629 630 /* 631 * Function prototype definitions. 632 */ 633 __BEGIN_DECLS 634 int _thr_setthreaded(int) __hidden; 635 int _mutex_cv_lock(pthread_mutex_t *) __hidden; 636 int _mutex_cv_unlock(pthread_mutex_t *) __hidden; 637 void _mutex_notify_priochange(struct pthread *, struct pthread *, int) __hidden; 638 int _mutex_reinit(pthread_mutex_t *) __hidden; 639 void _mutex_fork(struct pthread *curthread) __hidden; 640 void _mutex_unlock_private(struct pthread *) __hidden; 641 void _libpthread_init(struct pthread *) __hidden; 642 void *_pthread_getspecific(pthread_key_t); 643 int _pthread_cond_init(pthread_cond_t *, const pthread_condattr_t *); 644 int _pthread_cond_destroy(pthread_cond_t *); 645 int _pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *); 646 int _pthread_cond_timedwait(pthread_cond_t *, pthread_mutex_t *, 647 const struct timespec *); 648 int _pthread_cond_signal(pthread_cond_t *); 649 int _pthread_cond_broadcast(pthread_cond_t *); 650 int _pthread_create(pthread_t * thread, const pthread_attr_t * attr, 651 void *(*start_routine) (void *), void *arg); 652 int _pthread_key_create(pthread_key_t *, void (*) (void *)); 653 int _pthread_key_delete(pthread_key_t); 654 int _pthread_mutex_destroy(pthread_mutex_t *); 655 int _pthread_mutex_init(pthread_mutex_t *, const pthread_mutexattr_t *); 656 int _pthread_mutex_lock(pthread_mutex_t *); 657 int _pthread_mutex_trylock(pthread_mutex_t *); 658 int _pthread_mutex_unlock(pthread_mutex_t *); 659 int _pthread_mutexattr_init(pthread_mutexattr_t *); 660 int _pthread_mutexattr_destroy(pthread_mutexattr_t *); 661 int _pthread_mutexattr_settype(pthread_mutexattr_t *, int); 662 int _pthread_once(pthread_once_t *, void (*) (void)); 663 int _pthread_rwlock_init(pthread_rwlock_t *, const pthread_rwlockattr_t *); 664 int _pthread_rwlock_destroy (pthread_rwlock_t *); 665 struct pthread *_pthread_self(void); 666 int _pthread_setspecific(pthread_key_t, const void *); 667 void _pthread_testcancel(void); 668 void _pthread_yield(void); 669 void _pthread_cleanup_push(void (*routine) (void *), void *routine_arg); 670 void _pthread_cleanup_pop(int execute); 671 struct pthread *_thr_alloc(struct pthread *) __hidden; 672 void _thread_exit(char *, int, char *) __hidden __dead2; 673 void _thr_exit_cleanup(void) __hidden; 674 int _thr_ref_add(struct pthread *, struct pthread *, int) __hidden; 675 void _thr_ref_delete(struct pthread *, struct pthread *) __hidden; 676 int _thr_find_thread(struct pthread *, struct pthread *, int) __hidden; 677 void _thr_rtld_init(void) __hidden; 678 void _thr_rtld_fini(void) __hidden; 679 int _thr_stack_alloc(struct pthread_attr *) __hidden; 680 void _thr_stack_free(struct pthread_attr *) __hidden; 681 void _thr_free(struct pthread *, struct pthread *) __hidden; 682 void _thr_gc(struct pthread *) __hidden; 683 void _thread_cleanupspecific(void) __hidden; 684 void _thread_dump_info(void) __hidden; 685 void _thread_printf(int, const char *, ...) __hidden; 686 void _thr_spinlock_init(void) __hidden; 687 int _thr_cancel_enter(struct pthread *) __hidden; 688 void _thr_cancel_leave(struct pthread *, int) __hidden; 689 void _thr_signal_block(struct pthread *) __hidden; 690 void _thr_signal_unblock(struct pthread *) __hidden; 691 void _thr_signal_init(void) __hidden; 692 void _thr_signal_deinit(void) __hidden; 693 int _thr_send_sig(struct pthread *, int sig) __hidden; 694 void _thr_list_init(void) __hidden; 695 void _thr_hash_add(struct pthread *) __hidden; 696 void _thr_hash_remove(struct pthread *) __hidden; 697 struct pthread *_thr_hash_find(struct pthread *) __hidden; 698 void _thr_link(struct pthread *curthread, struct pthread *thread) __hidden; 699 void _thr_unlink(struct pthread *curthread, struct pthread *thread) __hidden; 700 void _thr_suspend_check(struct pthread *curthread) __hidden; 701 void _thr_assert_lock_level(void) __hidden __dead2; 702 void _thr_timer_init(void) __hidden; 703 void _thr_report_creation(struct pthread *curthread, 704 struct pthread *newthread) __hidden; 705 void _thr_report_death(struct pthread *curthread) __hidden; 706 void _thread_bp_create(void); 707 void _thread_bp_death(void); 708 709 /* #include <sys/aio.h> */ 710 #ifdef _SYS_AIO_H_ 711 int __sys_aio_suspend(const struct aiocb * const[], int, const struct timespec *); 712 #endif 713 714 /* #include <fcntl.h> */ 715 #ifdef _SYS_FCNTL_H_ 716 int __sys_fcntl(int, int, ...); 717 int __sys_open(const char *, int, ...); 718 #endif 719 720 /* #include <sys/ioctl.h> */ 721 #ifdef _SYS_IOCTL_H_ 722 int __sys_ioctl(int, unsigned long, ...); 723 #endif 724 725 /* #inclde <sched.h> */ 726 #ifdef _SCHED_H_ 727 int __sys_sched_yield(void); 728 #endif 729 730 /* #include <signal.h> */ 731 #ifdef _SIGNAL_H_ 732 int __sys_kill(pid_t, int); 733 int __sys_sigaction(int, const struct sigaction *, struct sigaction *); 734 int __sys_sigpending(sigset_t *); 735 int __sys_sigprocmask(int, const sigset_t *, sigset_t *); 736 int __sys_sigsuspend(const sigset_t *); 737 int __sys_sigreturn(ucontext_t *); 738 int __sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *); 739 #endif 740 741 /* #include <sys/socket.h> */ 742 #ifdef _SYS_SOCKET_H_ 743 int __sys_accept(int, struct sockaddr *, socklen_t *); 744 int __sys_connect(int, const struct sockaddr *, socklen_t); 745 ssize_t __sys_recv(int, void *, size_t, int); 746 ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *); 747 ssize_t __sys_recvmsg(int, struct msghdr *, int); 748 int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *, 749 off_t *, int); 750 ssize_t __sys_sendmsg(int, const struct msghdr *, int); 751 ssize_t __sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t); 752 #endif 753 754 /* #include <sys/uio.h> */ 755 #ifdef _SYS_UIO_H_ 756 ssize_t __sys_readv(int, const struct iovec *, int); 757 ssize_t __sys_writev(int, const struct iovec *, int); 758 #endif 759 760 /* #include <time.h> */ 761 #ifdef _TIME_H_ 762 int __sys_nanosleep(const struct timespec *, struct timespec *); 763 #endif 764 765 /* #include <unistd.h> */ 766 #ifdef _UNISTD_H_ 767 int __sys_close(int); 768 int __sys_execve(const char *, char * const *, char * const *); 769 int __sys_fork(void); 770 int __sys_fsync(int); 771 pid_t __sys_getpid(void); 772 int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 773 ssize_t __sys_read(int, void *, size_t); 774 ssize_t __sys_write(int, const void *, size_t); 775 void __sys_exit(int); 776 int __sys_sigwait(const sigset_t *, int *); 777 int __sys_sigtimedwait(const sigset_t *, siginfo_t *, 778 const struct timespec *); 779 int __sys_sigwaitinfo(const sigset_t *set, siginfo_t *info); 780 #endif 781 782 /* #include <poll.h> */ 783 #ifdef _SYS_POLL_H_ 784 int __sys_poll(struct pollfd *, unsigned, int); 785 #endif 786 787 /* #include <sys/mman.h> */ 788 #ifdef _SYS_MMAN_H_ 789 int __sys_msync(void *, size_t, int); 790 #endif 791 792 static inline int 793 _thr_isthreaded(void) 794 { 795 return (__isthreaded != 0); 796 } 797 798 static inline int 799 _thr_is_inited(void) 800 { 801 return (_thr_initial != NULL); 802 } 803 804 static inline void 805 _thr_check_init(void) 806 { 807 if (_thr_initial == NULL) 808 _libpthread_init(NULL); 809 } 810 811 __END_DECLS 812 813 #endif /* !_THR_PRIVATE_H */ 814