thr_private.h revision 211524
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 211524 2010-08-20 05:15:39Z 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 <sys/param.h> 43#include <sys/cpuset.h> 44#include <machine/atomic.h> 45#include <errno.h> 46#include <limits.h> 47#include <signal.h> 48#include <stddef.h> 49#include <stdio.h> 50#include <unistd.h> 51#include <ucontext.h> 52#include <sys/thr.h> 53#include <pthread.h> 54 55#define SYM_FB10(sym) __CONCAT(sym, _fb10) 56#define SYM_FBP10(sym) __CONCAT(sym, _fbp10) 57#define WEAK_REF(sym, alias) __weak_reference(sym, alias) 58#define SYM_COMPAT(sym, impl, ver) __sym_compat(sym, impl, ver) 59#define SYM_DEFAULT(sym, impl, ver) __sym_default(sym, impl, ver) 60 61#define FB10_COMPAT(func, sym) \ 62 WEAK_REF(func, SYM_FB10(sym)); \ 63 SYM_COMPAT(sym, SYM_FB10(sym), FBSD_1.0) 64 65#define FB10_COMPAT_PRIVATE(func, sym) \ 66 WEAK_REF(func, SYM_FBP10(sym)); \ 67 SYM_DEFAULT(sym, SYM_FBP10(sym), FBSDprivate_1.0) 68 69#ifndef __hidden 70#define __hidden __attribute__((visibility("hidden"))) 71#endif 72 73#include "pthread_md.h" 74#include "thr_umtx.h" 75#include "thread_db.h" 76 77typedef TAILQ_HEAD(pthreadlist, pthread) pthreadlist; 78typedef TAILQ_HEAD(atfork_head, pthread_atfork) atfork_head; 79TAILQ_HEAD(mutex_queue, pthread_mutex); 80 81/* Signal to do cancellation */ 82#define SIGCANCEL 32 83 84/* 85 * Kernel fatal error handler macro. 86 */ 87#define PANIC(string) _thread_exit(__FILE__,__LINE__,string) 88 89/* Output debug messages like this: */ 90#define stdout_debug(args...) _thread_printf(STDOUT_FILENO, ##args) 91#define stderr_debug(args...) _thread_printf(STDERR_FILENO, ##args) 92 93#ifdef _PTHREADS_INVARIANTS 94#define THR_ASSERT(cond, msg) do { \ 95 if (__predict_false(!(cond))) \ 96 PANIC(msg); \ 97} while (0) 98#else 99#define THR_ASSERT(cond, msg) 100#endif 101 102#ifdef PIC 103# define STATIC_LIB_REQUIRE(name) 104#else 105# define STATIC_LIB_REQUIRE(name) __asm (".globl " #name) 106#endif 107 108#define TIMESPEC_ADD(dst, src, val) \ 109 do { \ 110 (dst)->tv_sec = (src)->tv_sec + (val)->tv_sec; \ 111 (dst)->tv_nsec = (src)->tv_nsec + (val)->tv_nsec; \ 112 if ((dst)->tv_nsec >= 1000000000) { \ 113 (dst)->tv_sec++; \ 114 (dst)->tv_nsec -= 1000000000; \ 115 } \ 116 } while (0) 117 118#define TIMESPEC_SUB(dst, src, val) \ 119 do { \ 120 (dst)->tv_sec = (src)->tv_sec - (val)->tv_sec; \ 121 (dst)->tv_nsec = (src)->tv_nsec - (val)->tv_nsec; \ 122 if ((dst)->tv_nsec < 0) { \ 123 (dst)->tv_sec--; \ 124 (dst)->tv_nsec += 1000000000; \ 125 } \ 126 } while (0) 127 128struct pthread_mutex { 129 /* 130 * Lock for accesses to this structure. 131 */ 132 struct umutex m_lock; 133 enum pthread_mutextype m_type; 134 struct pthread *m_owner; 135 int m_count; 136 int m_refcount; 137 int m_spinloops; 138 int m_yieldloops; 139 /* 140 * Link for all mutexes a thread currently owns. 141 */ 142 TAILQ_ENTRY(pthread_mutex) m_qe; 143}; 144 145struct pthread_mutex_attr { 146 enum pthread_mutextype m_type; 147 int m_protocol; 148 int m_ceiling; 149}; 150 151#define PTHREAD_MUTEXATTR_STATIC_INITIALIZER \ 152 { PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, 0, MUTEX_FLAGS_PRIVATE } 153 154struct pthread_cond { 155 struct umutex c_lock; 156 struct ucond c_kerncv; 157 int c_pshared; 158 int c_clockid; 159}; 160 161struct pthread_cond_attr { 162 int c_pshared; 163 int c_clockid; 164}; 165 166struct pthread_barrier { 167 struct umutex b_lock; 168 struct ucond b_cv; 169 volatile int64_t b_cycle; 170 volatile int b_count; 171 volatile int b_waiters; 172}; 173 174struct pthread_barrierattr { 175 int pshared; 176}; 177 178struct pthread_spinlock { 179 struct umutex s_lock; 180}; 181 182/* 183 * Flags for condition variables. 184 */ 185#define COND_FLAGS_PRIVATE 0x01 186#define COND_FLAGS_INITED 0x02 187#define COND_FLAGS_BUSY 0x04 188 189/* 190 * Cleanup definitions. 191 */ 192struct pthread_cleanup { 193 struct pthread_cleanup *prev; 194 void (*routine)(void *); 195 void *routine_arg; 196 int onheap; 197}; 198 199#define THR_CLEANUP_PUSH(td, func, arg) { \ 200 struct pthread_cleanup __cup; \ 201 \ 202 __cup.routine = func; \ 203 __cup.routine_arg = arg; \ 204 __cup.onheap = 0; \ 205 __cup.prev = (td)->cleanup; \ 206 (td)->cleanup = &__cup; 207 208#define THR_CLEANUP_POP(td, exec) \ 209 (td)->cleanup = __cup.prev; \ 210 if ((exec) != 0) \ 211 __cup.routine(__cup.routine_arg); \ 212} 213 214struct pthread_atfork { 215 TAILQ_ENTRY(pthread_atfork) qe; 216 void (*prepare)(void); 217 void (*parent)(void); 218 void (*child)(void); 219}; 220 221struct pthread_attr { 222 int sched_policy; 223 int sched_inherit; 224 int prio; 225 int suspend; 226#define THR_STACK_USER 0x100 /* 0xFF reserved for <pthread.h> */ 227 int flags; 228 void *stackaddr_attr; 229 size_t stacksize_attr; 230 size_t guardsize_attr; 231 cpuset_t *cpuset; 232 size_t cpusetsize; 233}; 234 235/* 236 * Thread creation state attributes. 237 */ 238#define THR_CREATE_RUNNING 0 239#define THR_CREATE_SUSPENDED 1 240 241/* 242 * Miscellaneous definitions. 243 */ 244#define THR_STACK_DEFAULT (sizeof(void *) / 4 * 1024 * 1024) 245 246/* 247 * Maximum size of initial thread's stack. This perhaps deserves to be larger 248 * than the stacks of other threads, since many applications are likely to run 249 * almost entirely on this stack. 250 */ 251#define THR_STACK_INITIAL (THR_STACK_DEFAULT * 2) 252 253/* 254 * Define priorities returned by kernel. 255 */ 256#define THR_MIN_PRIORITY (_thr_priorities[SCHED_OTHER-1].pri_min) 257#define THR_MAX_PRIORITY (_thr_priorities[SCHED_OTHER-1].pri_max) 258#define THR_DEF_PRIORITY (_thr_priorities[SCHED_OTHER-1].pri_default) 259 260#define THR_MIN_RR_PRIORITY (_thr_priorities[SCHED_RR-1].pri_min) 261#define THR_MAX_RR_PRIORITY (_thr_priorities[SCHED_RR-1].pri_max) 262#define THR_DEF_RR_PRIORITY (_thr_priorities[SCHED_RR-1].pri_default) 263 264/* XXX The SCHED_FIFO should have same priority range as SCHED_RR */ 265#define THR_MIN_FIFO_PRIORITY (_thr_priorities[SCHED_FIFO_1].pri_min) 266#define THR_MAX_FIFO_PRIORITY (_thr_priorities[SCHED_FIFO-1].pri_max) 267#define THR_DEF_FIFO_PRIORITY (_thr_priorities[SCHED_FIFO-1].pri_default) 268 269struct pthread_prio { 270 int pri_min; 271 int pri_max; 272 int pri_default; 273}; 274 275struct pthread_rwlockattr { 276 int pshared; 277}; 278 279struct pthread_rwlock { 280 struct urwlock lock; 281 struct pthread *owner; 282}; 283 284/* 285 * Thread states. 286 */ 287enum pthread_state { 288 PS_RUNNING, 289 PS_DEAD 290}; 291 292struct pthread_specific_elem { 293 const void *data; 294 int seqno; 295}; 296 297struct pthread_key { 298 volatile int allocated; 299 int seqno; 300 void (*destructor)(void *); 301}; 302 303/* 304 * lwpid_t is 32bit but kernel thr API exports tid as long type 305 * in very earily date. 306 */ 307#define TID(thread) ((uint32_t) ((thread)->tid)) 308 309/* 310 * Thread structure. 311 */ 312struct pthread { 313 /* Kernel thread id. */ 314 long tid; 315#define TID_TERMINATED 1 316 317 /* 318 * Lock for accesses to this thread structure. 319 */ 320 struct umutex lock; 321 322 /* Internal condition variable cycle number. */ 323 uint32_t cycle; 324 325 /* How many low level locks the thread held. */ 326 int locklevel; 327 328 /* 329 * Set to non-zero when this thread has entered a critical 330 * region. We allow for recursive entries into critical regions. 331 */ 332 int critical_count; 333 334 /* Signal blocked counter. */ 335 int sigblock; 336 337 /* Queue entry for list of all threads. */ 338 TAILQ_ENTRY(pthread) tle; /* link for all threads in process */ 339 340 /* Queue entry for GC lists. */ 341 TAILQ_ENTRY(pthread) gcle; 342 343 /* Hash queue entry. */ 344 LIST_ENTRY(pthread) hle; 345 346 /* Threads reference count. */ 347 int refcount; 348 349 /* 350 * Thread start routine, argument, stack pointer and thread 351 * attributes. 352 */ 353 void *(*start_routine)(void *); 354 void *arg; 355 struct pthread_attr attr; 356 357#define SHOULD_CANCEL(thr) \ 358 ((thr)->cancel_pending && \ 359 ((thr)->cancel_point || (thr)->cancel_async) && \ 360 (thr)->cancel_enable && (thr)->cancelling == 0) 361 362 /* Cancellation is enabled */ 363 int cancel_enable; 364 365 /* Cancellation request is pending */ 366 int cancel_pending; 367 368 /* Thread is at cancellation point */ 369 int cancel_point; 370 371 /* Cancellation should be synchoronized */ 372 int cancel_defer; 373 374 /* Asynchronouse cancellation is enabled */ 375 int cancel_async; 376 377 /* Cancellation is in progress */ 378 int cancelling; 379 380 /* Thread temporary signal mask. */ 381 sigset_t sigmask; 382 383 /* Thread is in SIGCANCEL handler. */ 384 int in_sigcancel_handler; 385 386 /* New thread should unblock SIGCANCEL. */ 387 int unblock_sigcancel; 388 389 /* Force new thread to exit. */ 390 int force_exit; 391 392 /* Thread state: */ 393 enum pthread_state state; 394 395 /* 396 * Error variable used instead of errno. The function __error() 397 * returns a pointer to this. 398 */ 399 int error; 400 401 /* 402 * The joiner is the thread that is joining to this thread. The 403 * join status keeps track of a join operation to another thread. 404 */ 405 struct pthread *joiner; 406 407 /* Miscellaneous flags; only set with scheduling lock held. */ 408 int flags; 409#define THR_FLAGS_PRIVATE 0x0001 410#define THR_FLAGS_NEED_SUSPEND 0x0002 /* thread should be suspended */ 411#define THR_FLAGS_SUSPENDED 0x0004 /* thread is suspended */ 412 413 /* Thread list flags; only set with thread list lock held. */ 414 int tlflags; 415#define TLFLAGS_GC_SAFE 0x0001 /* thread safe for cleaning */ 416#define TLFLAGS_IN_TDLIST 0x0002 /* thread in all thread list */ 417#define TLFLAGS_IN_GCLIST 0x0004 /* thread in gc list */ 418#define TLFLAGS_DETACHED 0x0008 /* thread is detached */ 419 420 /* Queue of currently owned NORMAL or PRIO_INHERIT type mutexes. */ 421 struct mutex_queue mutexq; 422 423 /* Queue of all owned PRIO_PROTECT mutexes. */ 424 struct mutex_queue pp_mutexq; 425 426 void *ret; 427 struct pthread_specific_elem *specific; 428 int specific_data_count; 429 430 /* Number rwlocks rdlocks held. */ 431 int rdlock_count; 432 433 /* 434 * Current locks bitmap for rtld. */ 435 int rtld_bits; 436 437 /* Thread control block */ 438 struct tcb *tcb; 439 440 /* Cleanup handlers Link List */ 441 struct pthread_cleanup *cleanup; 442 443 /* 444 * Magic value to help recognize a valid thread structure 445 * from an invalid one: 446 */ 447#define THR_MAGIC ((u_int32_t) 0xd09ba115) 448 u_int32_t magic; 449 450 /* Enable event reporting */ 451 int report_events; 452 453 /* Event mask */ 454 int event_mask; 455 456 /* Event */ 457 td_event_msg_t event_buf; 458}; 459 460#define THR_IN_CRITICAL(thrd) \ 461 (((thrd)->locklevel > 0) || \ 462 ((thrd)->critical_count > 0)) 463 464#define THR_CRITICAL_ENTER(thrd) \ 465 (thrd)->critical_count++ 466 467#define THR_CRITICAL_LEAVE(thrd) \ 468 do { \ 469 (thrd)->critical_count--; \ 470 _thr_ast(thrd); \ 471 } while (0) 472 473#define THR_UMUTEX_TRYLOCK(thrd, lck) \ 474 _thr_umutex_trylock((lck), TID(thrd)) 475 476#define THR_UMUTEX_LOCK(thrd, lck) \ 477 _thr_umutex_lock((lck), TID(thrd)) 478 479#define THR_UMUTEX_TIMEDLOCK(thrd, lck, timo) \ 480 _thr_umutex_timedlock((lck), TID(thrd), (timo)) 481 482#define THR_UMUTEX_UNLOCK(thrd, lck) \ 483 _thr_umutex_unlock((lck), TID(thrd)) 484 485#define THR_LOCK_ACQUIRE(thrd, lck) \ 486do { \ 487 (thrd)->locklevel++; \ 488 _thr_umutex_lock(lck, TID(thrd)); \ 489} while (0) 490 491#ifdef _PTHREADS_INVARIANTS 492#define THR_ASSERT_LOCKLEVEL(thrd) \ 493do { \ 494 if (__predict_false((thrd)->locklevel <= 0)) \ 495 _thr_assert_lock_level(); \ 496} while (0) 497#else 498#define THR_ASSERT_LOCKLEVEL(thrd) 499#endif 500 501#define THR_LOCK_RELEASE(thrd, lck) \ 502do { \ 503 THR_ASSERT_LOCKLEVEL(thrd); \ 504 _thr_umutex_unlock((lck), TID(thrd)); \ 505 (thrd)->locklevel--; \ 506 _thr_ast(thrd); \ 507} while (0) 508 509#define THR_LOCK(curthrd) THR_LOCK_ACQUIRE(curthrd, &(curthrd)->lock) 510#define THR_UNLOCK(curthrd) THR_LOCK_RELEASE(curthrd, &(curthrd)->lock) 511#define THR_THREAD_LOCK(curthrd, thr) THR_LOCK_ACQUIRE(curthrd, &(thr)->lock) 512#define THR_THREAD_UNLOCK(curthrd, thr) THR_LOCK_RELEASE(curthrd, &(thr)->lock) 513 514#define THREAD_LIST_LOCK(curthrd) \ 515do { \ 516 THR_LOCK_ACQUIRE((curthrd), &_thr_list_lock); \ 517} while (0) 518 519#define THREAD_LIST_UNLOCK(curthrd) \ 520do { \ 521 THR_LOCK_RELEASE((curthrd), &_thr_list_lock); \ 522} while (0) 523 524/* 525 * Macros to insert/remove threads to the all thread list and 526 * the gc list. 527 */ 528#define THR_LIST_ADD(thrd) do { \ 529 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) == 0) { \ 530 TAILQ_INSERT_HEAD(&_thread_list, thrd, tle); \ 531 _thr_hash_add(thrd); \ 532 (thrd)->tlflags |= TLFLAGS_IN_TDLIST; \ 533 } \ 534} while (0) 535#define THR_LIST_REMOVE(thrd) do { \ 536 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) != 0) { \ 537 TAILQ_REMOVE(&_thread_list, thrd, tle); \ 538 _thr_hash_remove(thrd); \ 539 (thrd)->tlflags &= ~TLFLAGS_IN_TDLIST; \ 540 } \ 541} while (0) 542#define THR_GCLIST_ADD(thrd) do { \ 543 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) == 0) { \ 544 TAILQ_INSERT_HEAD(&_thread_gc_list, thrd, gcle);\ 545 (thrd)->tlflags |= TLFLAGS_IN_GCLIST; \ 546 _gc_count++; \ 547 } \ 548} while (0) 549#define THR_GCLIST_REMOVE(thrd) do { \ 550 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) != 0) { \ 551 TAILQ_REMOVE(&_thread_gc_list, thrd, gcle); \ 552 (thrd)->tlflags &= ~TLFLAGS_IN_GCLIST; \ 553 _gc_count--; \ 554 } \ 555} while (0) 556 557#define GC_NEEDED() (_gc_count >= 5) 558 559#define SHOULD_REPORT_EVENT(curthr, e) \ 560 (curthr->report_events && \ 561 (((curthr)->event_mask | _thread_event_mask ) & e) != 0) 562 563extern int __isthreaded; 564 565/* 566 * Global variables for the pthread kernel. 567 */ 568 569extern char *_usrstack __hidden; 570extern struct pthread *_thr_initial __hidden; 571 572/* For debugger */ 573extern int _libthr_debug; 574extern int _thread_event_mask; 575extern struct pthread *_thread_last_event; 576 577/* List of all threads: */ 578extern pthreadlist _thread_list; 579 580/* List of threads needing GC: */ 581extern pthreadlist _thread_gc_list __hidden; 582 583extern int _thread_active_threads; 584extern atfork_head _thr_atfork_list __hidden; 585extern struct umutex _thr_atfork_lock __hidden; 586 587/* Default thread attributes: */ 588extern struct pthread_attr _pthread_attr_default __hidden; 589 590/* Default mutex attributes: */ 591extern struct pthread_mutex_attr _pthread_mutexattr_default __hidden; 592 593/* Default condition variable attributes: */ 594extern struct pthread_cond_attr _pthread_condattr_default __hidden; 595 596extern struct pthread_prio _thr_priorities[] __hidden; 597 598extern pid_t _thr_pid __hidden; 599extern int _thr_is_smp __hidden; 600 601extern size_t _thr_guard_default __hidden; 602extern size_t _thr_stack_default __hidden; 603extern size_t _thr_stack_initial __hidden; 604extern int _thr_page_size __hidden; 605extern int _thr_spinloops __hidden; 606extern int _thr_yieldloops __hidden; 607 608/* Garbage thread count. */ 609extern int _gc_count __hidden; 610 611extern struct umutex _mutex_static_lock __hidden; 612extern struct umutex _cond_static_lock __hidden; 613extern struct umutex _rwlock_static_lock __hidden; 614extern struct umutex _keytable_lock __hidden; 615extern struct umutex _thr_list_lock __hidden; 616extern struct umutex _thr_event_lock __hidden; 617 618/* 619 * Function prototype definitions. 620 */ 621__BEGIN_DECLS 622int _thr_setthreaded(int) __hidden; 623int _mutex_cv_lock(pthread_mutex_t *, int count) __hidden; 624int _mutex_cv_unlock(pthread_mutex_t *, int *count) __hidden; 625int _mutex_reinit(pthread_mutex_t *) __hidden; 626void _mutex_fork(struct pthread *curthread) __hidden; 627void _libpthread_init(struct pthread *) __hidden; 628struct pthread *_thr_alloc(struct pthread *) __hidden; 629void _thread_exit(const char *, int, const char *) __hidden __dead2; 630void _thr_exit_cleanup(void) __hidden; 631int _thr_ref_add(struct pthread *, struct pthread *, int) __hidden; 632void _thr_ref_delete(struct pthread *, struct pthread *) __hidden; 633void _thr_ref_delete_unlocked(struct pthread *, struct pthread *) __hidden; 634int _thr_find_thread(struct pthread *, struct pthread *, int) __hidden; 635void _thr_rtld_init(void) __hidden; 636void _thr_rtld_fini(void) __hidden; 637int _thr_stack_alloc(struct pthread_attr *) __hidden; 638void _thr_stack_free(struct pthread_attr *) __hidden; 639void _thr_free(struct pthread *, struct pthread *) __hidden; 640void _thr_gc(struct pthread *) __hidden; 641void _thread_cleanupspecific(void) __hidden; 642void _thread_dump_info(void) __hidden; 643void _thread_printf(int, const char *, ...) __hidden; 644void _thr_spinlock_init(void) __hidden; 645void _thr_cancel_enter(struct pthread *) __hidden; 646void _thr_cancel_leave(struct pthread *) __hidden; 647void _thr_cancel_leave2(struct pthread *, int) __hidden; 648void _thr_cancel_enter_defer(struct pthread *, int) __hidden; 649void _thr_cancel_leave_defer(struct pthread *, int) __hidden; 650void _thr_testcancel(struct pthread *) __hidden; 651void _thr_signal_block(struct pthread *) __hidden; 652void _thr_signal_unblock(struct pthread *) __hidden; 653void _thr_signal_init(void) __hidden; 654void _thr_signal_deinit(void) __hidden; 655int _thr_send_sig(struct pthread *, int sig) __hidden; 656void _thr_list_init(void) __hidden; 657void _thr_hash_add(struct pthread *) __hidden; 658void _thr_hash_remove(struct pthread *) __hidden; 659struct pthread *_thr_hash_find(struct pthread *) __hidden; 660void _thr_link(struct pthread *, struct pthread *) __hidden; 661void _thr_unlink(struct pthread *, struct pthread *) __hidden; 662void _thr_suspend_check(struct pthread *) __hidden; 663void _thr_assert_lock_level(void) __hidden __dead2; 664void _thr_ast(struct pthread *) __hidden; 665void _thr_once_init(void) __hidden; 666void _thr_report_creation(struct pthread *curthread, 667 struct pthread *newthread) __hidden; 668void _thr_report_death(struct pthread *curthread) __hidden; 669int _thr_getscheduler(lwpid_t, int *, struct sched_param *) __hidden; 670int _thr_setscheduler(lwpid_t, int, const struct sched_param *) __hidden; 671int _rtp_to_schedparam(const struct rtprio *rtp, int *policy, 672 struct sched_param *param) __hidden; 673int _schedparam_to_rtp(int policy, const struct sched_param *param, 674 struct rtprio *rtp) __hidden; 675void _thread_bp_create(void); 676void _thread_bp_death(void); 677int _sched_yield(void); 678void _thr_sem_prefork(void); 679void _thr_sem_postfork(void); 680void _thr_sem_child_postfork(void); 681 682void _pthread_cleanup_push(void (*)(void *), void *); 683void _pthread_cleanup_pop(int); 684 685/* #include <fcntl.h> */ 686#ifdef _SYS_FCNTL_H_ 687int __sys_fcntl(int, int, ...); 688int __sys_open(const char *, int, ...); 689int __sys_openat(int, const char *, int, ...); 690#endif 691 692/* #include <signal.h> */ 693#ifdef _SIGNAL_H_ 694int __sys_kill(pid_t, int); 695int __sys_sigaction(int, const struct sigaction *, struct sigaction *); 696int __sys_sigpending(sigset_t *); 697int __sys_sigprocmask(int, const sigset_t *, sigset_t *); 698int __sys_sigsuspend(const sigset_t *); 699int __sys_sigreturn(ucontext_t *); 700int __sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *); 701int __sys_sigwait(const sigset_t *, int *); 702int __sys_sigtimedwait(const sigset_t *, siginfo_t *, 703 const struct timespec *); 704int __sys_sigwaitinfo(const sigset_t *set, siginfo_t *info); 705#endif 706 707/* #include <time.h> */ 708#ifdef _TIME_H_ 709int __sys_nanosleep(const struct timespec *, struct timespec *); 710#endif 711 712/* #include <unistd.h> */ 713#ifdef _UNISTD_H_ 714int __sys_close(int); 715int __sys_fork(void); 716pid_t __sys_getpid(void); 717ssize_t __sys_read(int, void *, size_t); 718ssize_t __sys_write(int, const void *, size_t); 719void __sys_exit(int); 720#endif 721 722int _umtx_op_err(void *, int op, u_long, void *, void *) __hidden; 723 724static inline int 725_thr_isthreaded(void) 726{ 727 return (__isthreaded != 0); 728} 729 730static inline int 731_thr_is_inited(void) 732{ 733 return (_thr_initial != NULL); 734} 735 736static inline void 737_thr_check_init(void) 738{ 739 if (_thr_initial == NULL) 740 _libpthread_init(NULL); 741} 742 743__END_DECLS 744 745#endif /* !_THR_PRIVATE_H */ 746