thr_private.h revision 151922
1/* 2 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by John Birrell. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: head/lib/libthr/thread/thr_private.h 151922 2005-11-01 06:53:22Z davidxu $ 33 */ 34 35#ifndef _THR_PRIVATE_H 36#define _THR_PRIVATE_H 37 38/* 39 * Include files. 40 */ 41#include <sys/types.h> 42#include <sys/time.h> 43#include <sys/cdefs.h> 44#include <sys/queue.h> 45#include <machine/atomic.h> 46#include <errno.h> 47#include <limits.h> 48#include <signal.h> 49#include <stddef.h> 50#include <stdio.h> 51#include <sched.h> 52#include <unistd.h> 53#include <ucontext.h> 54#include <sys/thr.h> 55#include <pthread.h> 56 57#include "pthread_md.h" 58#include "thr_umtx.h" 59#include "thread_db.h" 60 61/* 62 * Evaluate the storage class specifier. 63 */ 64#ifdef GLOBAL_PTHREAD_PRIVATE 65#define SCLASS 66#define SCLASS_PRESET(x...) = x 67#else 68#define SCLASS extern 69#define SCLASS_PRESET(x...) 70#endif 71 72/* Signal to do cancellation */ 73#define SIGCANCEL 32 74 75/* 76 * Kernel fatal error handler macro. 77 */ 78#define PANIC(string) _thread_exit(__FILE__,__LINE__,string) 79 80/* Output debug messages like this: */ 81#define stdout_debug(args...) _thread_printf(STDOUT_FILENO, ##args) 82#define stderr_debug(args...) _thread_printf(STDOUT_FILENO, ##args) 83 84#ifdef _PTHREADS_INVARIANTS 85#define THR_ASSERT(cond, msg) do { \ 86 if (__predict_false(!(cond))) \ 87 PANIC(msg); \ 88} while (0) 89#else 90#define THR_ASSERT(cond, msg) 91#endif 92 93#define TIMESPEC_ADD(dst, src, val) \ 94 do { \ 95 (dst)->tv_sec = (src)->tv_sec + (val)->tv_sec; \ 96 (dst)->tv_nsec = (src)->tv_nsec + (val)->tv_nsec; \ 97 if ((dst)->tv_nsec >= 1000000000) { \ 98 (dst)->tv_sec++; \ 99 (dst)->tv_nsec -= 1000000000; \ 100 } \ 101 } while (0) 102 103#define TIMESPEC_SUB(dst, src, val) \ 104 do { \ 105 (dst)->tv_sec = (src)->tv_sec - (val)->tv_sec; \ 106 (dst)->tv_nsec = (src)->tv_nsec - (val)->tv_nsec; \ 107 if ((dst)->tv_nsec < 0) { \ 108 (dst)->tv_sec--; \ 109 (dst)->tv_nsec += 1000000000; \ 110 } \ 111 } while (0) 112 113struct pthread_mutex { 114 /* 115 * Lock for accesses to this structure. 116 */ 117 volatile umtx_t m_lock; 118 enum pthread_mutextype m_type; 119 int m_protocol; 120 TAILQ_HEAD(mutex_head, pthread) m_queue; 121 struct pthread *m_owner; 122 long m_flags; 123 int m_count; 124 int m_refcount; 125 126 /* 127 * Used for priority inheritence and protection. 128 * 129 * m_prio - For priority inheritence, the highest active 130 * priority (threads locking the mutex inherit 131 * this priority). For priority protection, the 132 * ceiling priority of this mutex. 133 * m_saved_prio - mutex owners inherited priority before 134 * taking the mutex, restored when the owner 135 * unlocks the mutex. 136 */ 137 int m_prio; 138 int m_saved_prio; 139 140 /* 141 * Link for list of all mutexes a thread currently owns. 142 */ 143 TAILQ_ENTRY(pthread_mutex) m_qe; 144}; 145 146/* 147 * Flags for mutexes. 148 */ 149#define MUTEX_FLAGS_PRIVATE 0x01 150#define MUTEX_FLAGS_INITED 0x02 151#define MUTEX_FLAGS_BUSY 0x04 152 153struct pthread_mutex_attr { 154 enum pthread_mutextype m_type; 155 int m_protocol; 156 int m_ceiling; 157 long m_flags; 158}; 159 160#define PTHREAD_MUTEXATTR_STATIC_INITIALIZER \ 161 { PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, 0, MUTEX_FLAGS_PRIVATE } 162 163struct pthread_cond { 164 /* 165 * Lock for accesses to this structure. 166 */ 167 volatile umtx_t c_lock; 168 volatile umtx_t c_seqno; 169 volatile int c_waiters; 170 volatile int c_wakeups; 171 int c_pshared; 172 int c_clockid; 173}; 174 175struct pthread_cond_attr { 176 int c_pshared; 177 int c_clockid; 178}; 179 180struct pthread_barrier { 181 volatile umtx_t b_lock; 182 volatile umtx_t b_cycle; 183 volatile int b_count; 184 volatile int b_waiters; 185}; 186 187struct pthread_barrierattr { 188 int pshared; 189}; 190 191struct pthread_spinlock { 192 volatile umtx_t s_lock; 193}; 194 195/* 196 * Flags for condition variables. 197 */ 198#define COND_FLAGS_PRIVATE 0x01 199#define COND_FLAGS_INITED 0x02 200#define COND_FLAGS_BUSY 0x04 201 202/* 203 * Cleanup definitions. 204 */ 205struct pthread_cleanup { 206 struct pthread_cleanup *next; 207 void (*routine)(); 208 void *routine_arg; 209 int onstack; 210}; 211 212#define THR_CLEANUP_PUSH(td, func, arg) { \ 213 struct pthread_cleanup __cup; \ 214 \ 215 __cup.routine = func; \ 216 __cup.routine_arg = arg; \ 217 __cup.onstack = 1; \ 218 __cup.next = (td)->cleanup; \ 219 (td)->cleanup = &__cup; 220 221#define THR_CLEANUP_POP(td, exec) \ 222 (td)->cleanup = __cup.next; \ 223 if ((exec) != 0) \ 224 __cup.routine(__cup.routine_arg); \ 225} 226 227struct pthread_atfork { 228 TAILQ_ENTRY(pthread_atfork) qe; 229 void (*prepare)(void); 230 void (*parent)(void); 231 void (*child)(void); 232}; 233 234struct pthread_attr { 235 int sched_policy; 236 int sched_inherit; 237 int sched_interval; 238 int prio; 239 int suspend; 240#define THR_STACK_USER 0x100 /* 0xFF reserved for <pthread.h> */ 241 int flags; 242 void *arg_attr; 243 void (*cleanup_attr)(); 244 void *stackaddr_attr; 245 size_t stacksize_attr; 246 size_t guardsize_attr; 247}; 248 249/* 250 * Thread creation state attributes. 251 */ 252#define THR_CREATE_RUNNING 0 253#define THR_CREATE_SUSPENDED 1 254 255/* 256 * Miscellaneous definitions. 257 */ 258#define THR_STACK_DEFAULT (sizeof(void *) / 4 * 1024 * 1024) 259 260/* 261 * Maximum size of initial thread's stack. This perhaps deserves to be larger 262 * than the stacks of other threads, since many applications are likely to run 263 * almost entirely on this stack. 264 */ 265#define THR_STACK_INITIAL (THR_STACK_DEFAULT * 2) 266 267/* 268 * Define the different priority ranges. All applications have thread 269 * priorities constrained within 0-31. The threads library raises the 270 * priority when delivering signals in order to ensure that signal 271 * delivery happens (from the POSIX spec) "as soon as possible". 272 * In the future, the threads library will also be able to map specific 273 * threads into real-time (cooperating) processes or kernel threads. 274 * The RT and SIGNAL priorities will be used internally and added to 275 * thread base priorities so that the scheduling queue can handle both 276 * normal and RT priority threads with and without signal handling. 277 * 278 * The approach taken is that, within each class, signal delivery 279 * always has priority over thread execution. 280 */ 281#define THR_DEFAULT_PRIORITY 15 282#define THR_MIN_PRIORITY 0 283#define THR_MAX_PRIORITY 31 /* 0x1F */ 284#define THR_SIGNAL_PRIORITY 32 /* 0x20 */ 285#define THR_RT_PRIORITY 64 /* 0x40 */ 286#define THR_FIRST_PRIORITY THR_MIN_PRIORITY 287#define THR_LAST_PRIORITY \ 288 (THR_MAX_PRIORITY + THR_SIGNAL_PRIORITY + THR_RT_PRIORITY) 289#define THR_BASE_PRIORITY(prio) ((prio) & THR_MAX_PRIORITY) 290 291/* 292 * Time slice period in microseconds. 293 */ 294#define TIMESLICE_USEC 20000 295 296struct pthread_rwlockattr { 297 int pshared; 298}; 299 300struct pthread_rwlock { 301 pthread_mutex_t lock; /* monitor lock */ 302 pthread_cond_t read_signal; 303 pthread_cond_t write_signal; 304 int state; /* 0 = idle >0 = # of readers -1 = writer */ 305 int blocked_writers; 306}; 307 308/* 309 * Thread states. 310 */ 311enum pthread_state { 312 PS_RUNNING, 313 PS_DEAD 314}; 315 316union pthread_wait_data { 317 pthread_mutex_t mutex; 318}; 319 320struct pthread_specific_elem { 321 const void *data; 322 int seqno; 323}; 324 325struct pthread_key { 326 volatile int allocated; 327 volatile int count; 328 int seqno; 329 void (*destructor)(void *); 330}; 331 332/* 333 * Thread structure. 334 */ 335struct pthread { 336 /* 337 * Magic value to help recognize a valid thread structure 338 * from an invalid one: 339 */ 340#define THR_MAGIC ((u_int32_t) 0xd09ba115) 341 u_int32_t magic; 342 char *name; 343 344 /* 345 * Lock for accesses to this thread structure. 346 */ 347 umtx_t lock; 348 349 /* Kernel thread id. */ 350 long tid; 351#define TID_TERMINATED 1 352 353 /* Internal condition variable cycle number. */ 354 umtx_t cycle; 355 356 /* How many low level locks the thread held. */ 357 int locklevel; 358 359 /* Signal blocked counter. */ 360 int sigblock; 361 362 /* Queue entry for list of all threads. */ 363 TAILQ_ENTRY(pthread) tle; /* link for all threads in process */ 364 365 /* Queue entry for GC lists. */ 366 TAILQ_ENTRY(pthread) gcle; 367 368 /* Hash queue entry. */ 369 LIST_ENTRY(pthread) hle; 370 371 /* Threads reference count. */ 372 int refcount; 373 374 /* 375 * Thread start routine, argument, stack pointer and thread 376 * attributes. 377 */ 378 void *(*start_routine)(void *); 379 void *arg; 380 struct pthread_attr attr; 381 382 /* 383 * Cancelability flags 384 */ 385#define THR_CANCEL_DISABLE 0x0001 386#define THR_CANCEL_EXITING 0x0002 387#define THR_CANCEL_AT_POINT 0x0004 388#define THR_CANCEL_NEEDED 0x0008 389#define SHOULD_CANCEL(val) \ 390 (((val) & (THR_CANCEL_DISABLE | THR_CANCEL_EXITING | \ 391 THR_CANCEL_NEEDED)) == THR_CANCEL_NEEDED) 392 393#define SHOULD_ASYNC_CANCEL(val) \ 394 (((val) & (THR_CANCEL_DISABLE | THR_CANCEL_EXITING | \ 395 THR_CANCEL_NEEDED | THR_CANCEL_AT_POINT)) == \ 396 (THR_CANCEL_NEEDED | THR_CANCEL_AT_POINT)) 397 int cancelflags; 398 399 /* Thread temporary signal mask. */ 400 sigset_t sigmask; 401 402 /* Thread state: */ 403 umtx_t state; 404 405 /* 406 * Error variable used instead of errno. The function __error() 407 * returns a pointer to this. 408 */ 409 int error; 410 411 /* 412 * The joiner is the thread that is joining to this thread. The 413 * join status keeps track of a join operation to another thread. 414 */ 415 struct pthread *joiner; 416 417 /* 418 * The current thread can belong to a priority mutex queue. 419 * This is the synchronization queue link. 420 */ 421 TAILQ_ENTRY(pthread) sqe; 422 423 /* Wait data. */ 424 union pthread_wait_data data; 425 426 int sflags; 427#define THR_FLAGS_IN_SYNCQ 0x0001 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 */ 434 435 /* Thread list flags; only set with thread list lock held. */ 436 int tlflags; 437#define TLFLAGS_GC_SAFE 0x0001 /* thread safe for cleaning */ 438#define TLFLAGS_IN_TDLIST 0x0002 /* thread in all thread list */ 439#define TLFLAGS_IN_GCLIST 0x0004 /* thread in gc list */ 440#define TLFLAGS_DETACHED 0x0008 /* thread is detached */ 441 442 /* 443 * Base priority is the user setable and retrievable priority 444 * of the thread. It is only affected by explicit calls to 445 * set thread priority and upon thread creation via a thread 446 * attribute or default priority. 447 */ 448 char base_priority; 449 450 /* 451 * Inherited priority is the priority a thread inherits by 452 * taking a priority inheritence or protection mutex. It 453 * is not affected by base priority changes. Inherited 454 * priority defaults to and remains 0 until a mutex is taken 455 * that is being waited on by any other thread whose priority 456 * is non-zero. 457 */ 458 char inherited_priority; 459 460 /* 461 * Active priority is always the maximum of the threads base 462 * priority and inherited priority. When there is a change 463 * in either the base or inherited priority, the active 464 * priority must be recalculated. 465 */ 466 char active_priority; 467 468 /* Number of priority ceiling or protection mutexes owned. */ 469 int priority_mutex_count; 470 471 /* Queue of currently owned simple type mutexes. */ 472 TAILQ_HEAD(, pthread_mutex) mutexq; 473 474 /* Queue of currently owned priority type mutexs. */ 475 TAILQ_HEAD(, pthread_mutex) pri_mutexq; 476 477 void *ret; 478 struct pthread_specific_elem *specific; 479 int specific_data_count; 480 481 /* Number rwlocks rdlocks held. */ 482 int rdlock_count; 483 484 /* 485 * Current locks bitmap for rtld. */ 486 int rtld_bits; 487 488 /* Thread control block */ 489 struct tcb *tcb; 490 491 /* Cleanup handlers Link List */ 492 struct pthread_cleanup *cleanup; 493 494 /* Enable event reporting */ 495 int report_events; 496 497 /* Event mask */ 498 int event_mask; 499 500 /* Event */ 501 td_event_msg_t event_buf; 502}; 503 504#define THR_UMTX_TRYLOCK(thrd, lck) \ 505 _thr_umtx_trylock((lck), (thrd)->tid) 506 507#define THR_UMTX_LOCK(thrd, lck) \ 508 _thr_umtx_lock((lck), (thrd)->tid) 509 510#define THR_UMTX_TIMEDLOCK(thrd, lck, timo) \ 511 _thr_umtx_timedlock((lck), (thrd)->tid, (timo)) 512 513#define THR_UMTX_UNLOCK(thrd, lck) \ 514 _thr_umtx_unlock((lck), (thrd)->tid) 515 516#define THR_LOCK_ACQUIRE(thrd, lck) \ 517do { \ 518 (thrd)->locklevel++; \ 519 _thr_umtx_lock(lck, (thrd)->tid); \ 520} while (0) 521 522#define THR_LOCK_RELEASE(thrd, lck) \ 523do { \ 524 if ((thrd)->locklevel > 0) { \ 525 _thr_umtx_unlock((lck), (thrd)->tid); \ 526 (thrd)->locklevel--; \ 527 } else { \ 528 _thr_assert_lock_level(); \ 529 } \ 530} while (0) 531 532#define THR_LOCK(curthrd) THR_LOCK_ACQUIRE(curthrd, &(curthrd)->lock) 533#define THR_UNLOCK(curthrd) THR_LOCK_RELEASE(curthrd, &(curthrd)->lock) 534#define THR_THREAD_LOCK(curthrd, thr) THR_LOCK_ACQUIRE(curthrd, &(thr)->lock) 535#define THR_THREAD_UNLOCK(curthrd, thr) THR_LOCK_RELEASE(curthrd, &(thr)->lock) 536 537#define THREAD_LIST_LOCK(curthrd) \ 538do { \ 539 THR_LOCK_ACQUIRE((curthrd), &_thr_list_lock); \ 540} while (0) 541 542#define THREAD_LIST_UNLOCK(curthrd) \ 543do { \ 544 THR_LOCK_RELEASE((curthrd), &_thr_list_lock); \ 545} while (0) 546 547/* 548 * Macros to insert/remove threads to the all thread list and 549 * the gc list. 550 */ 551#define THR_LIST_ADD(thrd) do { \ 552 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) == 0) { \ 553 TAILQ_INSERT_HEAD(&_thread_list, thrd, tle); \ 554 _thr_hash_add(thrd); \ 555 (thrd)->tlflags |= TLFLAGS_IN_TDLIST; \ 556 } \ 557} while (0) 558#define THR_LIST_REMOVE(thrd) do { \ 559 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) != 0) { \ 560 TAILQ_REMOVE(&_thread_list, thrd, tle); \ 561 _thr_hash_remove(thrd); \ 562 (thrd)->tlflags &= ~TLFLAGS_IN_TDLIST; \ 563 } \ 564} while (0) 565#define THR_GCLIST_ADD(thrd) do { \ 566 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) == 0) { \ 567 TAILQ_INSERT_HEAD(&_thread_gc_list, thrd, gcle);\ 568 (thrd)->tlflags |= TLFLAGS_IN_GCLIST; \ 569 _gc_count++; \ 570 } \ 571} while (0) 572#define THR_GCLIST_REMOVE(thrd) do { \ 573 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) != 0) { \ 574 TAILQ_REMOVE(&_thread_gc_list, thrd, gcle); \ 575 (thrd)->tlflags &= ~TLFLAGS_IN_GCLIST; \ 576 _gc_count--; \ 577 } \ 578} while (0) 579 580#define GC_NEEDED() (_gc_count >= 5) 581 582#define THR_IN_SYNCQ(thrd) (((thrd)->sflags & THR_FLAGS_IN_SYNCQ) != 0) 583 584#define SHOULD_REPORT_EVENT(curthr, e) \ 585 (curthr->report_events && \ 586 (((curthr)->event_mask | _thread_event_mask ) & e) != 0) 587 588extern int __isthreaded; 589 590/* 591 * Global variables for the pthread kernel. 592 */ 593 594SCLASS void *_usrstack SCLASS_PRESET(NULL); 595SCLASS struct pthread *_thr_initial SCLASS_PRESET(NULL); 596SCLASS int _thr_scope_system SCLASS_PRESET(0); 597 598/* For debugger */ 599SCLASS int _libthr_debug SCLASS_PRESET(0); 600SCLASS int _thread_event_mask SCLASS_PRESET(0); 601SCLASS struct pthread *_thread_last_event; 602 603/* List of all threads: */ 604SCLASS TAILQ_HEAD(, pthread) _thread_list 605 SCLASS_PRESET(TAILQ_HEAD_INITIALIZER(_thread_list)); 606 607/* List of threads needing GC: */ 608SCLASS TAILQ_HEAD(, pthread) _thread_gc_list 609 SCLASS_PRESET(TAILQ_HEAD_INITIALIZER(_thread_gc_list)); 610 611SCLASS int _thread_active_threads SCLASS_PRESET(1); 612 613SCLASS TAILQ_HEAD(atfork_head, pthread_atfork) _thr_atfork_list; 614SCLASS umtx_t _thr_atfork_lock; 615 616/* Default thread attributes: */ 617SCLASS struct pthread_attr _pthread_attr_default 618 SCLASS_PRESET({ 619 .sched_policy = SCHED_RR, 620 .sched_inherit = 0, 621 .sched_interval = TIMESLICE_USEC, 622 .prio = THR_DEFAULT_PRIORITY, 623 .suspend = THR_CREATE_RUNNING, 624 .flags = 0, 625 .arg_attr = NULL, 626 .cleanup_attr = NULL, 627 .stackaddr_attr = NULL, 628 .stacksize_attr = THR_STACK_DEFAULT, 629 .guardsize_attr = 0 630 }); 631 632/* Default mutex attributes: */ 633SCLASS struct pthread_mutex_attr _pthread_mutexattr_default 634 SCLASS_PRESET({ 635 .m_type = PTHREAD_MUTEX_DEFAULT, 636 .m_protocol = PTHREAD_PRIO_NONE, 637 .m_ceiling = 0, 638 .m_flags = 0 639 }); 640 641/* Default condition variable attributes: */ 642SCLASS struct pthread_cond_attr _pthread_condattr_default 643 SCLASS_PRESET({ 644 .c_pshared = PTHREAD_PROCESS_PRIVATE, 645 .c_clockid = CLOCK_REALTIME 646 }); 647 648SCLASS pid_t _thr_pid SCLASS_PRESET(0); 649SCLASS int _thr_guard_default; 650SCLASS int _thr_stack_default SCLASS_PRESET(THR_STACK_DEFAULT); 651SCLASS int _thr_stack_initial SCLASS_PRESET(THR_STACK_INITIAL); 652SCLASS int _thr_page_size; 653/* Garbage thread count. */ 654SCLASS int _gc_count SCLASS_PRESET(0); 655 656SCLASS umtx_t _mutex_static_lock; 657SCLASS umtx_t _cond_static_lock; 658SCLASS umtx_t _rwlock_static_lock; 659SCLASS umtx_t _keytable_lock; 660SCLASS umtx_t _thr_list_lock; 661SCLASS umtx_t _thr_event_lock; 662 663/* Undefine the storage class and preset specifiers: */ 664#undef SCLASS 665#undef SCLASS_PRESET 666 667/* 668 * Function prototype definitions. 669 */ 670__BEGIN_DECLS 671int _thr_setthreaded(int); 672int _mutex_cv_lock(pthread_mutex_t *); 673int _mutex_cv_unlock(pthread_mutex_t *); 674void _mutex_notify_priochange(struct pthread *, struct pthread *, int); 675int _mutex_reinit(pthread_mutex_t *); 676void _mutex_fork(struct pthread *curthread); 677void _mutex_unlock_private(struct pthread *); 678void _libpthread_init(struct pthread *); 679void *_pthread_getspecific(pthread_key_t); 680int _pthread_cond_init(pthread_cond_t *, const pthread_condattr_t *); 681int _pthread_cond_destroy(pthread_cond_t *); 682int _pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *); 683int _pthread_cond_timedwait(pthread_cond_t *, pthread_mutex_t *, 684 const struct timespec *); 685int _pthread_cond_signal(pthread_cond_t *); 686int _pthread_cond_broadcast(pthread_cond_t *); 687int _pthread_create(pthread_t * thread, const pthread_attr_t * attr, 688 void *(*start_routine) (void *), void *arg); 689int _pthread_key_create(pthread_key_t *, void (*) (void *)); 690int _pthread_key_delete(pthread_key_t); 691int _pthread_mutex_destroy(pthread_mutex_t *); 692int _pthread_mutex_init(pthread_mutex_t *, const pthread_mutexattr_t *); 693int _pthread_mutex_lock(pthread_mutex_t *); 694int _pthread_mutex_trylock(pthread_mutex_t *); 695int _pthread_mutex_unlock(pthread_mutex_t *); 696int _pthread_mutexattr_init(pthread_mutexattr_t *); 697int _pthread_mutexattr_destroy(pthread_mutexattr_t *); 698int _pthread_mutexattr_settype(pthread_mutexattr_t *, int); 699int _pthread_once(pthread_once_t *, void (*) (void)); 700int _pthread_rwlock_init(pthread_rwlock_t *, const pthread_rwlockattr_t *); 701int _pthread_rwlock_destroy (pthread_rwlock_t *); 702struct pthread *_pthread_self(void); 703int _pthread_setspecific(pthread_key_t, const void *); 704void _pthread_testcancel(void); 705void _pthread_yield(void); 706void _pthread_cleanup_push(void (*routine) (void *), void *routine_arg); 707void _pthread_cleanup_pop(int execute); 708struct pthread *_thr_alloc(struct pthread *); 709void _thread_exit(char *, int, char *) __dead2; 710void _thr_exit_cleanup(void); 711int _thr_ref_add(struct pthread *, struct pthread *, int); 712void _thr_ref_delete(struct pthread *, struct pthread *); 713int _thr_find_thread(struct pthread *, struct pthread *, int); 714void _thr_rtld_init(void); 715void _thr_rtld_fini(void); 716int _thr_stack_alloc(struct pthread_attr *); 717void _thr_stack_free(struct pthread_attr *); 718void _thr_free(struct pthread *, struct pthread *); 719void _thr_gc(struct pthread *); 720void _thread_cleanupspecific(void); 721void _thread_dump_info(void); 722void _thread_printf(int, const char *, ...); 723void _thr_spinlock_init(void); 724int _thr_cancel_enter(struct pthread *); 725void _thr_cancel_leave(struct pthread *, int); 726void _thr_signal_block(struct pthread *); 727void _thr_signal_unblock(struct pthread *); 728void _thr_signal_init(void); 729void _thr_signal_deinit(void); 730int _thr_send_sig(struct pthread *, int sig); 731void _thr_list_init(void); 732void _thr_hash_add(struct pthread *); 733void _thr_hash_remove(struct pthread *); 734struct pthread *_thr_hash_find(struct pthread *); 735void _thr_link(struct pthread *curthread, struct pthread *thread); 736void _thr_unlink(struct pthread *curthread, struct pthread *thread); 737void _thr_suspend_check(struct pthread *curthread); 738void _thr_assert_lock_level(void) __dead2; 739void _thr_timer_init(void); 740void _thr_report_creation(struct pthread *curthread, 741 struct pthread *newthread); 742void _thr_report_death(struct pthread *curthread); 743void _thread_bp_create(void); 744void _thread_bp_death(void); 745 746/* #include <sys/aio.h> */ 747#ifdef _SYS_AIO_H_ 748int __sys_aio_suspend(const struct aiocb * const[], int, const struct timespec *); 749#endif 750 751/* #include <fcntl.h> */ 752#ifdef _SYS_FCNTL_H_ 753int __sys_fcntl(int, int, ...); 754int __sys_open(const char *, int, ...); 755#endif 756 757/* #include <sys/ioctl.h> */ 758#ifdef _SYS_IOCTL_H_ 759int __sys_ioctl(int, unsigned long, ...); 760#endif 761 762/* #inclde <sched.h> */ 763#ifdef _SCHED_H_ 764int __sys_sched_yield(void); 765#endif 766 767/* #include <signal.h> */ 768#ifdef _SIGNAL_H_ 769int __sys_kill(pid_t, int); 770int __sys_sigaction(int, const struct sigaction *, struct sigaction *); 771int __sys_sigpending(sigset_t *); 772int __sys_sigprocmask(int, const sigset_t *, sigset_t *); 773int __sys_sigsuspend(const sigset_t *); 774int __sys_sigreturn(ucontext_t *); 775int __sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *); 776#endif 777 778/* #include <sys/socket.h> */ 779#ifdef _SYS_SOCKET_H_ 780int __sys_accept(int, struct sockaddr *, socklen_t *); 781int __sys_connect(int, const struct sockaddr *, socklen_t); 782ssize_t __sys_recv(int, void *, size_t, int); 783ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *); 784ssize_t __sys_recvmsg(int, struct msghdr *, int); 785int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *, 786 off_t *, int); 787ssize_t __sys_sendmsg(int, const struct msghdr *, int); 788ssize_t __sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t); 789#endif 790 791/* #include <sys/uio.h> */ 792#ifdef _SYS_UIO_H_ 793ssize_t __sys_readv(int, const struct iovec *, int); 794ssize_t __sys_writev(int, const struct iovec *, int); 795#endif 796 797/* #include <time.h> */ 798#ifdef _TIME_H_ 799int __sys_nanosleep(const struct timespec *, struct timespec *); 800#endif 801 802/* #include <unistd.h> */ 803#ifdef _UNISTD_H_ 804int __sys_close(int); 805int __sys_execve(const char *, char * const *, char * const *); 806int __sys_fork(void); 807int __sys_fsync(int); 808pid_t __sys_getpid(void); 809int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 810ssize_t __sys_read(int, void *, size_t); 811ssize_t __sys_write(int, const void *, size_t); 812void __sys_exit(int); 813int __sys_sigwait(const sigset_t *, int *); 814int __sys_sigtimedwait(const sigset_t *, siginfo_t *, 815 const struct timespec *); 816int __sys_sigwaitinfo(const sigset_t *set, siginfo_t *info); 817#endif 818 819/* #include <poll.h> */ 820#ifdef _SYS_POLL_H_ 821int __sys_poll(struct pollfd *, unsigned, int); 822#endif 823 824/* #include <sys/mman.h> */ 825#ifdef _SYS_MMAN_H_ 826int __sys_msync(void *, size_t, int); 827#endif 828 829static inline int 830_thr_isthreaded(void) 831{ 832 return (__isthreaded != 0); 833} 834 835static inline int 836_thr_is_inited(void) 837{ 838 return (_thr_initial != NULL); 839} 840 841static inline void 842_thr_check_init(void) 843{ 844 if (_thr_initial == NULL) 845 _libpthread_init(NULL); 846} 847 848__END_DECLS 849 850#endif /* !_THR_PRIVATE_H */ 851