thr_private.h revision 214007
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 214007 2010-10-18 05:09:22Z 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 <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#include "pthread_md.h" 70#include "thr_umtx.h" 71#include "thread_db.h" 72 73#ifdef _PTHREAD_FORCED_UNWIND 74#define _BSD_SOURCE 75#include <unwind.h> 76#endif 77 78typedef TAILQ_HEAD(pthreadlist, pthread) pthreadlist; 79typedef TAILQ_HEAD(atfork_head, pthread_atfork) atfork_head; 80TAILQ_HEAD(mutex_queue, pthread_mutex); 81 82/* Signal to do cancellation */ 83#define SIGCANCEL 32 84 85/* 86 * Kernel fatal error handler macro. 87 */ 88#define PANIC(string) _thread_exit(__FILE__,__LINE__,string) 89 90/* Output debug messages like this: */ 91#define stdout_debug(args...) _thread_printf(STDOUT_FILENO, ##args) 92#define stderr_debug(args...) _thread_printf(STDERR_FILENO, ##args) 93 94#ifdef _PTHREADS_INVARIANTS 95#define THR_ASSERT(cond, msg) do { \ 96 if (__predict_false(!(cond))) \ 97 PANIC(msg); \ 98} while (0) 99#else 100#define THR_ASSERT(cond, msg) 101#endif 102 103#ifdef PIC 104# define STATIC_LIB_REQUIRE(name) 105#else 106# define STATIC_LIB_REQUIRE(name) __asm (".globl " #name) 107#endif 108 109#define TIMESPEC_ADD(dst, src, val) \ 110 do { \ 111 (dst)->tv_sec = (src)->tv_sec + (val)->tv_sec; \ 112 (dst)->tv_nsec = (src)->tv_nsec + (val)->tv_nsec; \ 113 if ((dst)->tv_nsec >= 1000000000) { \ 114 (dst)->tv_sec++; \ 115 (dst)->tv_nsec -= 1000000000; \ 116 } \ 117 } while (0) 118 119#define TIMESPEC_SUB(dst, src, val) \ 120 do { \ 121 (dst)->tv_sec = (src)->tv_sec - (val)->tv_sec; \ 122 (dst)->tv_nsec = (src)->tv_nsec - (val)->tv_nsec; \ 123 if ((dst)->tv_nsec < 0) { \ 124 (dst)->tv_sec--; \ 125 (dst)->tv_nsec += 1000000000; \ 126 } \ 127 } while (0) 128 129/* XXX These values should be same as those defined in pthread.h */ 130#define THR_MUTEX_INITIALIZER ((struct pthread_mutex *)NULL) 131#define THR_ADAPTIVE_MUTEX_INITIALIZER ((struct pthread_mutex *)1) 132#define THR_MUTEX_DESTROYED ((struct pthread_mutex *)2) 133#define THR_COND_INITIALIZER ((struct pthread_cond *)NULL) 134#define THR_COND_DESTROYED ((struct pthread_cond *)1) 135#define THR_RWLOCK_INITIALIZER ((struct pthread_rwlock *)NULL) 136#define THR_RWLOCK_DESTROYED ((struct pthread_rwlock *)1) 137 138struct pthread_mutex { 139 /* 140 * Lock for accesses to this structure. 141 */ 142 struct umutex m_lock; 143 enum pthread_mutextype m_type; 144 struct pthread *m_owner; 145 int m_count; 146 int m_refcount; 147 int m_spinloops; 148 int m_yieldloops; 149 int m_private; 150 /* 151 * Link for all mutexes a thread currently owns. 152 */ 153 TAILQ_ENTRY(pthread_mutex) m_qe; 154}; 155 156struct pthread_mutex_attr { 157 enum pthread_mutextype m_type; 158 int m_protocol; 159 int m_ceiling; 160}; 161 162#define PTHREAD_MUTEXATTR_STATIC_INITIALIZER \ 163 { PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, 0, MUTEX_FLAGS_PRIVATE } 164 165struct pthread_cond { 166 struct umutex c_lock; 167 struct ucond c_kerncv; 168 int c_pshared; 169 int c_clockid; 170}; 171 172struct pthread_cond_attr { 173 int c_pshared; 174 int c_clockid; 175}; 176 177struct pthread_barrier { 178 struct umutex b_lock; 179 struct ucond b_cv; 180 volatile int64_t b_cycle; 181 volatile int b_count; 182 volatile int b_waiters; 183}; 184 185struct pthread_barrierattr { 186 int pshared; 187}; 188 189struct pthread_spinlock { 190 struct umutex s_lock; 191}; 192 193/* 194 * Flags for condition variables. 195 */ 196#define COND_FLAGS_PRIVATE 0x01 197#define COND_FLAGS_INITED 0x02 198#define COND_FLAGS_BUSY 0x04 199 200/* 201 * Cleanup definitions. 202 */ 203struct pthread_cleanup { 204 struct pthread_cleanup *prev; 205 void (*routine)(void *); 206 void *routine_arg; 207 int onheap; 208}; 209 210#define THR_CLEANUP_PUSH(td, func, arg) { \ 211 struct pthread_cleanup __cup; \ 212 \ 213 __cup.routine = func; \ 214 __cup.routine_arg = arg; \ 215 __cup.onheap = 0; \ 216 __cup.prev = (td)->cleanup; \ 217 (td)->cleanup = &__cup; 218 219#define THR_CLEANUP_POP(td, exec) \ 220 (td)->cleanup = __cup.prev; \ 221 if ((exec) != 0) \ 222 __cup.routine(__cup.routine_arg); \ 223} 224 225struct pthread_atfork { 226 TAILQ_ENTRY(pthread_atfork) qe; 227 void (*prepare)(void); 228 void (*parent)(void); 229 void (*child)(void); 230}; 231 232struct pthread_attr { 233 int sched_policy; 234 int sched_inherit; 235 int prio; 236 int suspend; 237#define THR_STACK_USER 0x100 /* 0xFF reserved for <pthread.h> */ 238 int flags; 239 void *stackaddr_attr; 240 size_t stacksize_attr; 241 size_t guardsize_attr; 242 cpuset_t *cpuset; 243 size_t cpusetsize; 244}; 245 246/* 247 * Thread creation state attributes. 248 */ 249#define THR_CREATE_RUNNING 0 250#define THR_CREATE_SUSPENDED 1 251 252/* 253 * Miscellaneous definitions. 254 */ 255#define THR_STACK_DEFAULT (sizeof(void *) / 4 * 1024 * 1024) 256 257/* 258 * Maximum size of initial thread's stack. This perhaps deserves to be larger 259 * than the stacks of other threads, since many applications are likely to run 260 * almost entirely on this stack. 261 */ 262#define THR_STACK_INITIAL (THR_STACK_DEFAULT * 2) 263 264/* 265 * Define priorities returned by kernel. 266 */ 267#define THR_MIN_PRIORITY (_thr_priorities[SCHED_OTHER-1].pri_min) 268#define THR_MAX_PRIORITY (_thr_priorities[SCHED_OTHER-1].pri_max) 269#define THR_DEF_PRIORITY (_thr_priorities[SCHED_OTHER-1].pri_default) 270 271#define THR_MIN_RR_PRIORITY (_thr_priorities[SCHED_RR-1].pri_min) 272#define THR_MAX_RR_PRIORITY (_thr_priorities[SCHED_RR-1].pri_max) 273#define THR_DEF_RR_PRIORITY (_thr_priorities[SCHED_RR-1].pri_default) 274 275/* XXX The SCHED_FIFO should have same priority range as SCHED_RR */ 276#define THR_MIN_FIFO_PRIORITY (_thr_priorities[SCHED_FIFO_1].pri_min) 277#define THR_MAX_FIFO_PRIORITY (_thr_priorities[SCHED_FIFO-1].pri_max) 278#define THR_DEF_FIFO_PRIORITY (_thr_priorities[SCHED_FIFO-1].pri_default) 279 280struct pthread_prio { 281 int pri_min; 282 int pri_max; 283 int pri_default; 284}; 285 286struct pthread_rwlockattr { 287 int pshared; 288 int kind; 289}; 290 291struct pthread_rwlock { 292 struct urwlock lock; 293 struct pthread *owner; 294 int recurse; 295 int kind; 296}; 297 298/* 299 * Thread states. 300 */ 301enum pthread_state { 302 PS_RUNNING, 303 PS_DEAD 304}; 305 306struct pthread_specific_elem { 307 const void *data; 308 int seqno; 309}; 310 311struct pthread_key { 312 volatile int allocated; 313 int seqno; 314 void (*destructor)(void *); 315}; 316 317/* 318 * lwpid_t is 32bit but kernel thr API exports tid as long type 319 * in very earily date. 320 */ 321#define TID(thread) ((uint32_t) ((thread)->tid)) 322 323/* 324 * Thread structure. 325 */ 326struct pthread { 327 /* Kernel thread id. */ 328 long tid; 329#define TID_TERMINATED 1 330 331 /* 332 * Lock for accesses to this thread structure. 333 */ 334 struct umutex lock; 335 336 /* Internal condition variable cycle number. */ 337 uint32_t cycle; 338 339 /* How many low level locks the thread held. */ 340 int locklevel; 341 342 /* 343 * Set to non-zero when this thread has entered a critical 344 * region. We allow for recursive entries into critical regions. 345 */ 346 int critical_count; 347 348 /* Signal blocked counter. */ 349 int sigblock; 350 351 /* Queue entry for list of all threads. */ 352 TAILQ_ENTRY(pthread) tle; /* link for all threads in process */ 353 354 /* Queue entry for GC lists. */ 355 TAILQ_ENTRY(pthread) gcle; 356 357 /* Hash queue entry. */ 358 LIST_ENTRY(pthread) hle; 359 360 /* Threads reference count. */ 361 int refcount; 362 363 /* 364 * Thread start routine, argument, stack pointer and thread 365 * attributes. 366 */ 367 void *(*start_routine)(void *); 368 void *arg; 369 struct pthread_attr attr; 370 371#define SHOULD_CANCEL(thr) \ 372 ((thr)->cancel_pending && (thr)->cancel_enable && \ 373 (thr)->no_cancel == 0) 374 375 /* Cancellation is enabled */ 376 int cancel_enable; 377 378 /* Cancellation request is pending */ 379 int cancel_pending; 380 381 /* Thread is at cancellation point */ 382 int cancel_point; 383 384 /* Cancellation is temporarily disabled */ 385 int no_cancel; 386 387 /* Asynchronouse cancellation is enabled */ 388 int cancel_async; 389 390 /* Cancellation is in progress */ 391 int cancelling; 392 393 /* Thread temporary signal mask. */ 394 sigset_t sigmask; 395 396 /* Thread should unblock SIGCANCEL. */ 397 int unblock_sigcancel; 398 399 /* In sigsuspend state */ 400 int in_sigsuspend; 401 402 /* deferred signal info */ 403 siginfo_t deferred_siginfo; 404 405 /* signal mask to restore. */ 406 sigset_t deferred_sigmask; 407 408 /* the sigaction should be used for deferred signal. */ 409 struct sigaction deferred_sigact; 410 411 /* Force new thread to exit. */ 412 int force_exit; 413 414 /* Thread state: */ 415 enum pthread_state state; 416 417 /* 418 * Error variable used instead of errno. The function __error() 419 * returns a pointer to this. 420 */ 421 int error; 422 423 /* 424 * The joiner is the thread that is joining to this thread. The 425 * join status keeps track of a join operation to another thread. 426 */ 427 struct pthread *joiner; 428 429 /* Miscellaneous flags; only set with scheduling lock held. */ 430 int flags; 431#define THR_FLAGS_PRIVATE 0x0001 432#define THR_FLAGS_NEED_SUSPEND 0x0002 /* thread should be suspended */ 433#define THR_FLAGS_SUSPENDED 0x0004 /* thread is suspended */ 434#define THR_FLAGS_DETACHED 0x0008 /* thread is detached */ 435 436 /* Thread list flags; only set with thread list lock held. */ 437 int tlflags; 438#define TLFLAGS_GC_SAFE 0x0001 /* thread safe for cleaning */ 439#define TLFLAGS_IN_TDLIST 0x0002 /* thread in all thread list */ 440#define TLFLAGS_IN_GCLIST 0x0004 /* thread in gc list */ 441 442 /* Queue of currently owned NORMAL or PRIO_INHERIT type mutexes. */ 443 struct mutex_queue mutexq; 444 445 /* Queue of all owned PRIO_PROTECT mutexes. */ 446 struct mutex_queue pp_mutexq; 447 448 void *ret; 449 struct pthread_specific_elem *specific; 450 int specific_data_count; 451 452 /* Number rwlocks rdlocks held. */ 453 int rdlock_count; 454 455 /* 456 * Current locks bitmap for rtld. */ 457 int rtld_bits; 458 459 /* Thread control block */ 460 struct tcb *tcb; 461 462 /* Cleanup handlers Link List */ 463 struct pthread_cleanup *cleanup; 464 465#ifdef _PTHREAD_FORCED_UNWIND 466 struct _Unwind_Exception ex; 467 void *unwind_stackend; 468 int unwind_disabled; 469#endif 470 471 /* 472 * Magic value to help recognize a valid thread structure 473 * from an invalid one: 474 */ 475#define THR_MAGIC ((u_int32_t) 0xd09ba115) 476 u_int32_t magic; 477 478 /* Enable event reporting */ 479 int report_events; 480 481 /* Event mask */ 482 int event_mask; 483 484 /* Event */ 485 td_event_msg_t event_buf; 486}; 487 488#define THR_SHOULD_GC(thrd) \ 489 ((thrd)->refcount == 0 && (thrd)->state == PS_DEAD && \ 490 ((thrd)->flags & THR_FLAGS_DETACHED) != 0) 491 492#define THR_IN_CRITICAL(thrd) \ 493 (((thrd)->locklevel > 0) || \ 494 ((thrd)->critical_count > 0)) 495 496#define THR_CRITICAL_ENTER(thrd) \ 497 (thrd)->critical_count++ 498 499#define THR_CRITICAL_LEAVE(thrd) \ 500 do { \ 501 (thrd)->critical_count--; \ 502 _thr_ast(thrd); \ 503 } while (0) 504 505#define THR_UMUTEX_TRYLOCK(thrd, lck) \ 506 _thr_umutex_trylock((lck), TID(thrd)) 507 508#define THR_UMUTEX_LOCK(thrd, lck) \ 509 _thr_umutex_lock((lck), TID(thrd)) 510 511#define THR_UMUTEX_TIMEDLOCK(thrd, lck, timo) \ 512 _thr_umutex_timedlock((lck), TID(thrd), (timo)) 513 514#define THR_UMUTEX_UNLOCK(thrd, lck) \ 515 _thr_umutex_unlock((lck), TID(thrd)) 516 517#define THR_LOCK_ACQUIRE(thrd, lck) \ 518do { \ 519 (thrd)->locklevel++; \ 520 _thr_umutex_lock(lck, TID(thrd)); \ 521} while (0) 522 523#ifdef _PTHREADS_INVARIANTS 524#define THR_ASSERT_LOCKLEVEL(thrd) \ 525do { \ 526 if (__predict_false((thrd)->locklevel <= 0)) \ 527 _thr_assert_lock_level(); \ 528} while (0) 529#else 530#define THR_ASSERT_LOCKLEVEL(thrd) 531#endif 532 533#define THR_LOCK_RELEASE(thrd, lck) \ 534do { \ 535 THR_ASSERT_LOCKLEVEL(thrd); \ 536 _thr_umutex_unlock((lck), TID(thrd)); \ 537 (thrd)->locklevel--; \ 538 _thr_ast(thrd); \ 539} while (0) 540 541#define THR_LOCK(curthrd) THR_LOCK_ACQUIRE(curthrd, &(curthrd)->lock) 542#define THR_UNLOCK(curthrd) THR_LOCK_RELEASE(curthrd, &(curthrd)->lock) 543#define THR_THREAD_LOCK(curthrd, thr) THR_LOCK_ACQUIRE(curthrd, &(thr)->lock) 544#define THR_THREAD_UNLOCK(curthrd, thr) THR_LOCK_RELEASE(curthrd, &(thr)->lock) 545 546#define THREAD_LIST_RDLOCK(curthrd) \ 547do { \ 548 (curthrd)->locklevel++; \ 549 _thr_rwl_rdlock(&_thr_list_lock); \ 550} while (0) 551 552#define THREAD_LIST_WRLOCK(curthrd) \ 553do { \ 554 (curthrd)->locklevel++; \ 555 _thr_rwl_wrlock(&_thr_list_lock); \ 556} while (0) 557 558#define THREAD_LIST_UNLOCK(curthrd) \ 559do { \ 560 _thr_rwl_unlock(&_thr_list_lock); \ 561 (curthrd)->locklevel--; \ 562 _thr_ast(curthrd); \ 563} while (0) 564 565/* 566 * Macros to insert/remove threads to the all thread list and 567 * the gc list. 568 */ 569#define THR_LIST_ADD(thrd) do { \ 570 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) == 0) { \ 571 TAILQ_INSERT_HEAD(&_thread_list, thrd, tle); \ 572 _thr_hash_add(thrd); \ 573 (thrd)->tlflags |= TLFLAGS_IN_TDLIST; \ 574 } \ 575} while (0) 576#define THR_LIST_REMOVE(thrd) do { \ 577 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) != 0) { \ 578 TAILQ_REMOVE(&_thread_list, thrd, tle); \ 579 _thr_hash_remove(thrd); \ 580 (thrd)->tlflags &= ~TLFLAGS_IN_TDLIST; \ 581 } \ 582} while (0) 583#define THR_GCLIST_ADD(thrd) do { \ 584 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) == 0) { \ 585 TAILQ_INSERT_HEAD(&_thread_gc_list, thrd, gcle);\ 586 (thrd)->tlflags |= TLFLAGS_IN_GCLIST; \ 587 _gc_count++; \ 588 } \ 589} while (0) 590#define THR_GCLIST_REMOVE(thrd) do { \ 591 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) != 0) { \ 592 TAILQ_REMOVE(&_thread_gc_list, thrd, gcle); \ 593 (thrd)->tlflags &= ~TLFLAGS_IN_GCLIST; \ 594 _gc_count--; \ 595 } \ 596} while (0) 597 598#define THR_REF_ADD(curthread, pthread) { \ 599 THR_CRITICAL_ENTER(curthread); \ 600 pthread->refcount++; \ 601} while (0) 602 603#define THR_REF_DEL(curthread, pthread) { \ 604 pthread->refcount--; \ 605 THR_CRITICAL_LEAVE(curthread); \ 606} while (0) 607 608#define GC_NEEDED() (_gc_count >= 5) 609 610#define SHOULD_REPORT_EVENT(curthr, e) \ 611 (curthr->report_events && \ 612 (((curthr)->event_mask | _thread_event_mask ) & e) != 0) 613 614extern int __isthreaded; 615 616/* 617 * Global variables for the pthread kernel. 618 */ 619 620extern char *_usrstack __hidden; 621extern struct pthread *_thr_initial __hidden; 622 623/* For debugger */ 624extern int _libthr_debug; 625extern int _thread_event_mask; 626extern struct pthread *_thread_last_event; 627 628/* List of all threads: */ 629extern pthreadlist _thread_list; 630 631/* List of threads needing GC: */ 632extern pthreadlist _thread_gc_list __hidden; 633 634extern int _thread_active_threads; 635extern atfork_head _thr_atfork_list __hidden; 636extern struct urwlock _thr_atfork_lock __hidden; 637 638/* Default thread attributes: */ 639extern struct pthread_attr _pthread_attr_default __hidden; 640 641/* Default mutex attributes: */ 642extern struct pthread_mutex_attr _pthread_mutexattr_default __hidden; 643extern struct pthread_mutex_attr _pthread_mutexattr_adaptive_default __hidden; 644 645/* Default condition variable attributes: */ 646extern struct pthread_cond_attr _pthread_condattr_default __hidden; 647 648extern struct pthread_prio _thr_priorities[] __hidden; 649 650extern pid_t _thr_pid __hidden; 651extern int _thr_is_smp __hidden; 652 653extern size_t _thr_guard_default __hidden; 654extern size_t _thr_stack_default __hidden; 655extern size_t _thr_stack_initial __hidden; 656extern int _thr_page_size __hidden; 657extern int _thr_spinloops __hidden; 658extern int _thr_yieldloops __hidden; 659 660/* Garbage thread count. */ 661extern int _gc_count __hidden; 662 663extern struct umutex _mutex_static_lock __hidden; 664extern struct umutex _cond_static_lock __hidden; 665extern struct umutex _rwlock_static_lock __hidden; 666extern struct umutex _keytable_lock __hidden; 667extern struct urwlock _thr_list_lock __hidden; 668extern struct umutex _thr_event_lock __hidden; 669 670/* 671 * Function prototype definitions. 672 */ 673__BEGIN_DECLS 674int _thr_setthreaded(int) __hidden; 675int _mutex_cv_lock(pthread_mutex_t *, int count) __hidden; 676int _mutex_cv_unlock(pthread_mutex_t *, int *count) __hidden; 677int _mutex_reinit(pthread_mutex_t *) __hidden; 678void _mutex_fork(struct pthread *curthread) __hidden; 679void _libpthread_init(struct pthread *) __hidden; 680struct pthread *_thr_alloc(struct pthread *) __hidden; 681void _thread_exit(const char *, int, const char *) __hidden __dead2; 682int _thr_ref_add(struct pthread *, struct pthread *, int) __hidden; 683void _thr_ref_delete(struct pthread *, struct pthread *) __hidden; 684void _thr_ref_delete_unlocked(struct pthread *, struct pthread *) __hidden; 685int _thr_find_thread(struct pthread *, struct pthread *, int) __hidden; 686void _thr_rtld_init(void) __hidden; 687void _thr_rtld_fini(void) __hidden; 688void _thr_rtld_postfork_child(void) __hidden; 689int _thr_stack_alloc(struct pthread_attr *) __hidden; 690void _thr_stack_free(struct pthread_attr *) __hidden; 691void _thr_free(struct pthread *, struct pthread *) __hidden; 692void _thr_gc(struct pthread *) __hidden; 693void _thread_cleanupspecific(void) __hidden; 694void _thread_printf(int, const char *, ...) __hidden; 695void _thr_spinlock_init(void) __hidden; 696void _thr_cancel_enter(struct pthread *) __hidden; 697void _thr_cancel_enter2(struct pthread *, int) __hidden; 698void _thr_cancel_leave(struct pthread *, int) __hidden; 699void _thr_testcancel(struct pthread *) __hidden; 700void _thr_signal_block(struct pthread *) __hidden; 701void _thr_signal_unblock(struct pthread *) __hidden; 702void _thr_signal_init(void) __hidden; 703void _thr_signal_deinit(void) __hidden; 704int _thr_send_sig(struct pthread *, int sig) __hidden; 705void _thr_list_init(void) __hidden; 706void _thr_hash_add(struct pthread *) __hidden; 707void _thr_hash_remove(struct pthread *) __hidden; 708struct pthread *_thr_hash_find(struct pthread *) __hidden; 709void _thr_link(struct pthread *, struct pthread *) __hidden; 710void _thr_unlink(struct pthread *, struct pthread *) __hidden; 711void _thr_assert_lock_level(void) __hidden __dead2; 712void _thr_ast(struct pthread *) __hidden; 713void _thr_once_init(void) __hidden; 714void _thr_report_creation(struct pthread *curthread, 715 struct pthread *newthread) __hidden; 716void _thr_report_death(struct pthread *curthread) __hidden; 717int _thr_getscheduler(lwpid_t, int *, struct sched_param *) __hidden; 718int _thr_setscheduler(lwpid_t, int, const struct sched_param *) __hidden; 719void _thr_signal_prefork(void) __hidden; 720void _thr_signal_postfork(void) __hidden; 721void _thr_signal_postfork_child(void) __hidden; 722void _thr_try_gc(struct pthread *, struct pthread *) __hidden; 723int _rtp_to_schedparam(const struct rtprio *rtp, int *policy, 724 struct sched_param *param) __hidden; 725int _schedparam_to_rtp(int policy, const struct sched_param *param, 726 struct rtprio *rtp) __hidden; 727void _thread_bp_create(void); 728void _thread_bp_death(void); 729int _sched_yield(void); 730 731void _pthread_cleanup_push(void (*)(void *), void *); 732void _pthread_cleanup_pop(int); 733void _pthread_exit_mask(void *status, sigset_t *mask) __dead2 __hidden; 734void _pthread_cancel_enter(int maycancel); 735void _pthread_cancel_leave(int maycancel); 736 737/* #include <fcntl.h> */ 738#ifdef _SYS_FCNTL_H_ 739int __sys_fcntl(int, int, ...); 740int __sys_open(const char *, int, ...); 741int __sys_openat(int, const char *, int, ...); 742#endif 743 744/* #include <signal.h> */ 745#ifdef _SIGNAL_H_ 746int __sys_kill(pid_t, int); 747int __sys_sigaction(int, const struct sigaction *, struct sigaction *); 748int __sys_sigpending(sigset_t *); 749int __sys_sigprocmask(int, const sigset_t *, sigset_t *); 750int __sys_sigsuspend(const sigset_t *); 751int __sys_sigreturn(const ucontext_t *); 752int __sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *); 753int __sys_sigwait(const sigset_t *, int *); 754int __sys_sigtimedwait(const sigset_t *, siginfo_t *, 755 const struct timespec *); 756int __sys_sigwaitinfo(const sigset_t *set, siginfo_t *info); 757#endif 758 759/* #include <time.h> */ 760#ifdef _TIME_H_ 761int __sys_nanosleep(const struct timespec *, struct timespec *); 762#endif 763 764/* #include <sys/ucontext.h> */ 765#ifdef _SYS_UCONTEXT_H_ 766int __sys_setcontext(const ucontext_t *ucp); 767int __sys_swapcontext(ucontext_t *oucp, const ucontext_t *ucp); 768#endif 769 770/* #include <unistd.h> */ 771#ifdef _UNISTD_H_ 772int __sys_close(int); 773int __sys_fork(void); 774pid_t __sys_getpid(void); 775ssize_t __sys_read(int, void *, size_t); 776ssize_t __sys_write(int, const void *, size_t); 777void __sys_exit(int); 778#endif 779 780int _umtx_op_err(void *, int op, u_long, void *, void *) __hidden; 781 782static inline int 783_thr_isthreaded(void) 784{ 785 return (__isthreaded != 0); 786} 787 788static inline int 789_thr_is_inited(void) 790{ 791 return (_thr_initial != NULL); 792} 793 794static inline void 795_thr_check_init(void) 796{ 797 if (_thr_initial == NULL) 798 _libpthread_init(NULL); 799} 800 801struct dl_phdr_info; 802void __pthread_cxa_finalize(struct dl_phdr_info *phdr_info); 803void _thr_tsd_unload(struct dl_phdr_info *phdr_info) __hidden; 804void _thr_sigact_unload(struct dl_phdr_info *phdr_info) __hidden; 805 806__END_DECLS 807 808#endif /* !_THR_PRIVATE_H */ 809