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