thr_private.h revision 154055
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: head/lib/libthr/thread/thr_private.h 154055 2006-01-05 13:51:22Z davidxu $ 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 62typedef TAILQ_HEAD(pthreadlist, pthread) pthreadlist; 63typedef 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 106struct 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 146struct 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 156struct 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 168struct pthread_cond_attr { 169 int c_pshared; 170 int c_clockid; 171}; 172 173struct 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 180struct pthread_barrierattr { 181 int pshared; 182}; 183 184struct 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 */ 198struct 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 220struct pthread_atfork { 221 TAILQ_ENTRY(pthread_atfork) qe; 222 void (*prepare)(void); 223 void (*parent)(void); 224 void (*child)(void); 225}; 226 227struct 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 289struct pthread_rwlockattr { 290 int pshared; 291}; 292 293struct 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 */ 304enum pthread_state { 305 PS_RUNNING, 306 PS_DEAD 307}; 308 309union pthread_wait_data { 310 pthread_mutex_t mutex; 311}; 312 313struct pthread_specific_elem { 314 const void *data; 315 int seqno; 316}; 317 318struct pthread_key { 319 volatile int allocated; 320 volatile int count; 321 int seqno; 322 void (*destructor)(void *); 323}; 324 325/* 326 * Thread structure. 327 */ 328struct 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 /* 353 * Set to non-zero when this thread has entered a critical 354 * region. We allow for recursive entries into critical regions. 355 */ 356 int critical_count; 357 358 /* Signal blocked counter. */ 359 int sigblock; 360 361 /* Queue entry for list of all threads. */ 362 TAILQ_ENTRY(pthread) tle; /* link for all threads in process */ 363 364 /* Queue entry for GC lists. */ 365 TAILQ_ENTRY(pthread) gcle; 366 367 /* Hash queue entry. */ 368 LIST_ENTRY(pthread) hle; 369 370 /* Threads reference count. */ 371 int refcount; 372 373 /* 374 * Thread start routine, argument, stack pointer and thread 375 * attributes. 376 */ 377 void *(*start_routine)(void *); 378 void *arg; 379 struct pthread_attr attr; 380 381 /* 382 * Cancelability flags 383 */ 384#define THR_CANCEL_DISABLE 0x0001 385#define THR_CANCEL_EXITING 0x0002 386#define THR_CANCEL_AT_POINT 0x0004 387#define THR_CANCEL_NEEDED 0x0008 388#define SHOULD_CANCEL(val) \ 389 (((val) & (THR_CANCEL_DISABLE | THR_CANCEL_EXITING | \ 390 THR_CANCEL_NEEDED)) == THR_CANCEL_NEEDED) 391 392#define SHOULD_ASYNC_CANCEL(val) \ 393 (((val) & (THR_CANCEL_DISABLE | THR_CANCEL_EXITING | \ 394 THR_CANCEL_NEEDED | THR_CANCEL_AT_POINT)) == \ 395 (THR_CANCEL_NEEDED | THR_CANCEL_AT_POINT)) 396 int cancelflags; 397 398 /* Thread temporary signal mask. */ 399 sigset_t sigmask; 400 401 /* Thread state: */ 402 umtx_t state; 403 404 /* 405 * Error variable used instead of errno. The function __error() 406 * returns a pointer to this. 407 */ 408 int error; 409 410 /* 411 * The joiner is the thread that is joining to this thread. The 412 * join status keeps track of a join operation to another thread. 413 */ 414 struct pthread *joiner; 415 416 /* 417 * The current thread can belong to a priority mutex queue. 418 * This is the synchronization queue link. 419 */ 420 TAILQ_ENTRY(pthread) sqe; 421 422 /* Wait data. */ 423 union pthread_wait_data data; 424 425 int sflags; 426#define THR_FLAGS_IN_SYNCQ 0x0001 427 428 /* Miscellaneous flags; only set with scheduling lock held. */ 429 int flags; 430#define THR_FLAGS_PRIVATE 0x0001 431#define THR_FLAGS_NEED_SUSPEND 0x0002 /* thread should be suspended */ 432#define THR_FLAGS_SUSPENDED 0x0004 /* thread is suspended */ 433 434 /* Thread list flags; only set with thread list lock held. */ 435 int tlflags; 436#define TLFLAGS_GC_SAFE 0x0001 /* thread safe for cleaning */ 437#define TLFLAGS_IN_TDLIST 0x0002 /* thread in all thread list */ 438#define TLFLAGS_IN_GCLIST 0x0004 /* thread in gc list */ 439#define TLFLAGS_DETACHED 0x0008 /* thread is detached */ 440 441 /* 442 * Base priority is the user setable and retrievable priority 443 * of the thread. It is only affected by explicit calls to 444 * set thread priority and upon thread creation via a thread 445 * attribute or default priority. 446 */ 447 char base_priority; 448 449 /* 450 * Inherited priority is the priority a thread inherits by 451 * taking a priority inheritence or protection mutex. It 452 * is not affected by base priority changes. Inherited 453 * priority defaults to and remains 0 until a mutex is taken 454 * that is being waited on by any other thread whose priority 455 * is non-zero. 456 */ 457 char inherited_priority; 458 459 /* 460 * Active priority is always the maximum of the threads base 461 * priority and inherited priority. When there is a change 462 * in either the base or inherited priority, the active 463 * priority must be recalculated. 464 */ 465 char active_priority; 466 467 /* Number of priority ceiling or protection mutexes owned. */ 468 int priority_mutex_count; 469 470 /* Queue of currently owned simple type mutexes. */ 471 TAILQ_HEAD(, pthread_mutex) mutexq; 472 473 /* Queue of currently owned priority type mutexs. */ 474 TAILQ_HEAD(, pthread_mutex) pri_mutexq; 475 476 void *ret; 477 struct pthread_specific_elem *specific; 478 int specific_data_count; 479 480 /* Number rwlocks rdlocks held. */ 481 int rdlock_count; 482 483 /* 484 * Current locks bitmap for rtld. */ 485 int rtld_bits; 486 487 /* Thread control block */ 488 struct tcb *tcb; 489 490 /* Cleanup handlers Link List */ 491 struct pthread_cleanup *cleanup; 492 493 /* Enable event reporting */ 494 int report_events; 495 496 /* Event mask */ 497 int event_mask; 498 499 /* Event */ 500 td_event_msg_t event_buf; 501}; 502 503#define THR_IN_CRITICAL(thrd) \ 504 (((thrd)->locklevel > 0) || \ 505 ((thrd)->critical_count > 0)) 506 507#define THR_UMTX_TRYLOCK(thrd, lck) \ 508 _thr_umtx_trylock((lck), (thrd)->tid) 509 510#define THR_UMTX_LOCK(thrd, lck) \ 511 _thr_umtx_lock((lck), (thrd)->tid) 512 513#define THR_UMTX_TIMEDLOCK(thrd, lck, timo) \ 514 _thr_umtx_timedlock((lck), (thrd)->tid, (timo)) 515 516#define THR_UMTX_UNLOCK(thrd, lck) \ 517 _thr_umtx_unlock((lck), (thrd)->tid) 518 519#define THR_LOCK_ACQUIRE(thrd, lck) \ 520do { \ 521 (thrd)->locklevel++; \ 522 _thr_umtx_lock(lck, (thrd)->tid); \ 523} while (0) 524 525#define THR_LOCK_RELEASE(thrd, lck) \ 526do { \ 527 if ((thrd)->locklevel > 0) { \ 528 _thr_umtx_unlock((lck), (thrd)->tid); \ 529 (thrd)->locklevel--; \ 530 _thr_ast(thrd); \ 531 } else { \ 532 _thr_assert_lock_level(); \ 533 } \ 534} while (0) 535 536#define THR_LOCK(curthrd) THR_LOCK_ACQUIRE(curthrd, &(curthrd)->lock) 537#define THR_UNLOCK(curthrd) THR_LOCK_RELEASE(curthrd, &(curthrd)->lock) 538#define THR_THREAD_LOCK(curthrd, thr) THR_LOCK_ACQUIRE(curthrd, &(thr)->lock) 539#define THR_THREAD_UNLOCK(curthrd, thr) THR_LOCK_RELEASE(curthrd, &(thr)->lock) 540 541#define THREAD_LIST_LOCK(curthrd) \ 542do { \ 543 THR_LOCK_ACQUIRE((curthrd), &_thr_list_lock); \ 544} while (0) 545 546#define THREAD_LIST_UNLOCK(curthrd) \ 547do { \ 548 THR_LOCK_RELEASE((curthrd), &_thr_list_lock); \ 549} while (0) 550 551/* 552 * Macros to insert/remove threads to the all thread list and 553 * the gc list. 554 */ 555#define THR_LIST_ADD(thrd) do { \ 556 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) == 0) { \ 557 TAILQ_INSERT_HEAD(&_thread_list, thrd, tle); \ 558 _thr_hash_add(thrd); \ 559 (thrd)->tlflags |= TLFLAGS_IN_TDLIST; \ 560 } \ 561} while (0) 562#define THR_LIST_REMOVE(thrd) do { \ 563 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) != 0) { \ 564 TAILQ_REMOVE(&_thread_list, thrd, tle); \ 565 _thr_hash_remove(thrd); \ 566 (thrd)->tlflags &= ~TLFLAGS_IN_TDLIST; \ 567 } \ 568} while (0) 569#define THR_GCLIST_ADD(thrd) do { \ 570 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) == 0) { \ 571 TAILQ_INSERT_HEAD(&_thread_gc_list, thrd, gcle);\ 572 (thrd)->tlflags |= TLFLAGS_IN_GCLIST; \ 573 _gc_count++; \ 574 } \ 575} while (0) 576#define THR_GCLIST_REMOVE(thrd) do { \ 577 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) != 0) { \ 578 TAILQ_REMOVE(&_thread_gc_list, thrd, gcle); \ 579 (thrd)->tlflags &= ~TLFLAGS_IN_GCLIST; \ 580 _gc_count--; \ 581 } \ 582} while (0) 583 584#define GC_NEEDED() (_gc_count >= 5) 585 586#define THR_IN_SYNCQ(thrd) (((thrd)->sflags & THR_FLAGS_IN_SYNCQ) != 0) 587 588#define SHOULD_REPORT_EVENT(curthr, e) \ 589 (curthr->report_events && \ 590 (((curthr)->event_mask | _thread_event_mask ) & e) != 0) 591 592extern int __isthreaded; 593 594/* 595 * Global variables for the pthread kernel. 596 */ 597 598extern void *_usrstack __hidden; 599extern struct pthread *_thr_initial __hidden; 600extern int _thr_scope_system __hidden; 601 602/* For debugger */ 603extern int _libthr_debug; 604extern int _thread_event_mask; 605extern struct pthread *_thread_last_event; 606 607/* List of all threads: */ 608extern pthreadlist _thread_list; 609 610/* List of threads needing GC: */ 611extern pthreadlist _thread_gc_list __hidden; 612 613extern int _thread_active_threads; 614extern atfork_head _thr_atfork_list __hidden; 615extern umtx_t _thr_atfork_lock __hidden; 616 617/* Default thread attributes: */ 618extern struct pthread_attr _pthread_attr_default __hidden; 619 620/* Default mutex attributes: */ 621extern struct pthread_mutex_attr _pthread_mutexattr_default __hidden; 622 623/* Default condition variable attributes: */ 624extern struct pthread_cond_attr _pthread_condattr_default __hidden; 625 626extern pid_t _thr_pid __hidden; 627extern int _thr_guard_default __hidden; 628extern int _thr_stack_default __hidden; 629extern int _thr_stack_initial __hidden; 630extern int _thr_page_size __hidden; 631/* Garbage thread count. */ 632extern int _gc_count __hidden; 633 634extern umtx_t _mutex_static_lock __hidden; 635extern umtx_t _cond_static_lock __hidden; 636extern umtx_t _rwlock_static_lock __hidden; 637extern umtx_t _keytable_lock __hidden; 638extern umtx_t _thr_list_lock __hidden; 639extern umtx_t _thr_event_lock __hidden; 640 641/* 642 * Function prototype definitions. 643 */ 644__BEGIN_DECLS 645int _thr_setthreaded(int) __hidden; 646int _mutex_cv_lock(pthread_mutex_t *) __hidden; 647int _mutex_cv_unlock(pthread_mutex_t *) __hidden; 648void _mutex_notify_priochange(struct pthread *, struct pthread *, int) __hidden; 649int _mutex_reinit(pthread_mutex_t *) __hidden; 650void _mutex_fork(struct pthread *curthread) __hidden; 651void _mutex_unlock_private(struct pthread *) __hidden; 652void _libpthread_init(struct pthread *) __hidden; 653void *_pthread_getspecific(pthread_key_t); 654int _pthread_cond_init(pthread_cond_t *, const pthread_condattr_t *); 655int _pthread_cond_destroy(pthread_cond_t *); 656int _pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *); 657int _pthread_cond_timedwait(pthread_cond_t *, pthread_mutex_t *, 658 const struct timespec *); 659int _pthread_cond_signal(pthread_cond_t *); 660int _pthread_cond_broadcast(pthread_cond_t *); 661int _pthread_create(pthread_t * thread, const pthread_attr_t * attr, 662 void *(*start_routine) (void *), void *arg); 663int _pthread_key_create(pthread_key_t *, void (*) (void *)); 664int _pthread_key_delete(pthread_key_t); 665int _pthread_mutex_destroy(pthread_mutex_t *); 666int _pthread_mutex_init(pthread_mutex_t *, const pthread_mutexattr_t *); 667int _pthread_mutex_lock(pthread_mutex_t *); 668int _pthread_mutex_trylock(pthread_mutex_t *); 669int _pthread_mutex_unlock(pthread_mutex_t *); 670int _pthread_mutexattr_init(pthread_mutexattr_t *); 671int _pthread_mutexattr_destroy(pthread_mutexattr_t *); 672int _pthread_mutexattr_settype(pthread_mutexattr_t *, int); 673int _pthread_once(pthread_once_t *, void (*) (void)); 674int _pthread_rwlock_init(pthread_rwlock_t *, const pthread_rwlockattr_t *); 675int _pthread_rwlock_destroy (pthread_rwlock_t *); 676struct pthread *_pthread_self(void); 677int _pthread_setspecific(pthread_key_t, const void *); 678void _pthread_testcancel(void); 679void _pthread_yield(void); 680void _pthread_cleanup_push(void (*routine) (void *), void *routine_arg); 681void _pthread_cleanup_pop(int execute); 682struct pthread *_thr_alloc(struct pthread *) __hidden; 683void _thread_exit(char *, int, char *) __hidden __dead2; 684void _thr_exit_cleanup(void) __hidden; 685int _thr_ref_add(struct pthread *, struct pthread *, int) __hidden; 686void _thr_ref_delete(struct pthread *, struct pthread *) __hidden; 687void _thr_ref_delete_unlocked(struct pthread *, struct pthread *) __hidden; 688int _thr_find_thread(struct pthread *, struct pthread *, int) __hidden; 689void _thr_rtld_init(void) __hidden; 690void _thr_rtld_fini(void) __hidden; 691int _thr_stack_alloc(struct pthread_attr *) __hidden; 692void _thr_stack_free(struct pthread_attr *) __hidden; 693void _thr_free(struct pthread *, struct pthread *) __hidden; 694void _thr_gc(struct pthread *) __hidden; 695void _thread_cleanupspecific(void) __hidden; 696void _thread_dump_info(void) __hidden; 697void _thread_printf(int, const char *, ...) __hidden; 698void _thr_spinlock_init(void) __hidden; 699int _thr_cancel_enter(struct pthread *) __hidden; 700void _thr_cancel_leave(struct pthread *, int) __hidden; 701void _thr_signal_block(struct pthread *) __hidden; 702void _thr_signal_unblock(struct pthread *) __hidden; 703void _thr_signal_init(void) __hidden; 704void _thr_signal_deinit(void) __hidden; 705int _thr_send_sig(struct pthread *, int sig) __hidden; 706void _thr_list_init(void) __hidden; 707void _thr_hash_add(struct pthread *) __hidden; 708void _thr_hash_remove(struct pthread *) __hidden; 709struct pthread *_thr_hash_find(struct pthread *) __hidden; 710void _thr_link(struct pthread *, struct pthread *) __hidden; 711void _thr_unlink(struct pthread *, struct pthread *) __hidden; 712void _thr_suspend_check(struct pthread *) __hidden; 713void _thr_assert_lock_level(void) __hidden __dead2; 714void _thr_ast(struct pthread *) __hidden; 715void _thr_timer_init(void) __hidden; 716void _thr_report_creation(struct pthread *curthread, 717 struct pthread *newthread) __hidden; 718void _thr_report_death(struct pthread *curthread) __hidden; 719void _thread_bp_create(void); 720void _thread_bp_death(void); 721 722/* #include <sys/aio.h> */ 723#ifdef _SYS_AIO_H_ 724int __sys_aio_suspend(const struct aiocb * const[], int, const struct timespec *); 725#endif 726 727/* #include <fcntl.h> */ 728#ifdef _SYS_FCNTL_H_ 729int __sys_fcntl(int, int, ...); 730int __sys_open(const char *, int, ...); 731#endif 732 733/* #include <sys/ioctl.h> */ 734#ifdef _SYS_IOCTL_H_ 735int __sys_ioctl(int, unsigned long, ...); 736#endif 737 738/* #inclde <sched.h> */ 739#ifdef _SCHED_H_ 740int __sys_sched_yield(void); 741#endif 742 743/* #include <signal.h> */ 744#ifdef _SIGNAL_H_ 745int __sys_kill(pid_t, int); 746int __sys_sigaction(int, const struct sigaction *, struct sigaction *); 747int __sys_sigpending(sigset_t *); 748int __sys_sigprocmask(int, const sigset_t *, sigset_t *); 749int __sys_sigsuspend(const sigset_t *); 750int __sys_sigreturn(ucontext_t *); 751int __sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *); 752#endif 753 754/* #include <sys/socket.h> */ 755#ifdef _SYS_SOCKET_H_ 756int __sys_accept(int, struct sockaddr *, socklen_t *); 757int __sys_connect(int, const struct sockaddr *, socklen_t); 758ssize_t __sys_recv(int, void *, size_t, int); 759ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *); 760ssize_t __sys_recvmsg(int, struct msghdr *, int); 761int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *, 762 off_t *, int); 763ssize_t __sys_sendmsg(int, const struct msghdr *, int); 764ssize_t __sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t); 765#endif 766 767/* #include <sys/uio.h> */ 768#ifdef _SYS_UIO_H_ 769ssize_t __sys_readv(int, const struct iovec *, int); 770ssize_t __sys_writev(int, const struct iovec *, int); 771#endif 772 773/* #include <time.h> */ 774#ifdef _TIME_H_ 775int __sys_nanosleep(const struct timespec *, struct timespec *); 776#endif 777 778/* #include <unistd.h> */ 779#ifdef _UNISTD_H_ 780int __sys_close(int); 781int __sys_execve(const char *, char * const *, char * const *); 782int __sys_fork(void); 783int __sys_fsync(int); 784pid_t __sys_getpid(void); 785int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 786ssize_t __sys_read(int, void *, size_t); 787ssize_t __sys_write(int, const void *, size_t); 788void __sys_exit(int); 789int __sys_sigwait(const sigset_t *, int *); 790int __sys_sigtimedwait(const sigset_t *, siginfo_t *, 791 const struct timespec *); 792int __sys_sigwaitinfo(const sigset_t *set, siginfo_t *info); 793#endif 794 795/* #include <poll.h> */ 796#ifdef _SYS_POLL_H_ 797int __sys_poll(struct pollfd *, unsigned, int); 798#endif 799 800/* #include <sys/mman.h> */ 801#ifdef _SYS_MMAN_H_ 802int __sys_msync(void *, size_t, int); 803#endif 804 805static inline int 806_thr_isthreaded(void) 807{ 808 return (__isthreaded != 0); 809} 810 811static inline int 812_thr_is_inited(void) 813{ 814 return (_thr_initial != NULL); 815} 816 817static inline void 818_thr_check_init(void) 819{ 820 if (_thr_initial == NULL) 821 _libpthread_init(NULL); 822} 823 824__END_DECLS 825 826#endif /* !_THR_PRIVATE_H */ 827