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 * $FreeBSD$ 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) 112 113 struct 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 152 153 struct 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 } 162 163 struct 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 }; 174 175 struct pthread_cond_attr { 176 int c_pshared; 177 int c_clockid; 178 }; 179 180 struct 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 }; 186 187 struct pthread_barrierattr { 188 int pshared; 189 }; 190 191 struct 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 */ 205 struct 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 } 226 227 struct pthread_atfork { 228 TAILQ_ENTRY(pthread_atfork) qe; 229 void (*prepare)(void); 230 void (*parent)(void); 231 void (*child)(void); 232 }; 233 234 struct 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 295 296 struct pthread_rwlockattr { 297 int pshared; 298 }; 299 300 struct 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 */ 311 enum pthread_state { 312 PS_RUNNING, 313 PS_DEAD 314 }; 315 316 union pthread_wait_data { 317 pthread_mutex_t mutex; 318 }; 319 320 struct pthread_specific_elem { 321 const void *data; 322 int seqno; 323 }; 324 325 struct pthread_key { 326 volatile int allocated; 327 volatile int count; 328 int seqno; 329 void (*destructor)(void *); 330 }; 331 332 /* 333 * Thread structure. 334 */ 335 struct 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) \ 517 do { \ 518 (thrd)->locklevel++; \ 519 _thr_umtx_lock(lck, (thrd)->tid); \ 520 } while (0) 521 522 #define THR_LOCK_RELEASE(thrd, lck) \ 523 do { \ 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) \ 538 do { \ 539 THR_LOCK_ACQUIRE((curthrd), &_thr_list_lock); \ 540 } while (0) 541 542 #define THREAD_LIST_UNLOCK(curthrd) \ 543 do { \ 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) 587 588 extern int __isthreaded; 589 590 /* 591 * Global variables for the pthread kernel. 592 */ 593 594 SCLASS void *_usrstack SCLASS_PRESET(NULL); 595 SCLASS struct pthread *_thr_initial SCLASS_PRESET(NULL); 596 SCLASS int _thr_scope_system SCLASS_PRESET(0); 597 598 /* For debugger */ 599 SCLASS int _libthr_debug SCLASS_PRESET(0); 600 SCLASS int _thread_event_mask SCLASS_PRESET(0); 601 SCLASS struct pthread *_thread_last_event; 602 603 /* List of all threads: */ 604 SCLASS TAILQ_HEAD(, pthread) _thread_list 605 SCLASS_PRESET(TAILQ_HEAD_INITIALIZER(_thread_list)); 606 607 /* List of threads needing GC: */ 608 SCLASS TAILQ_HEAD(, pthread) _thread_gc_list 609 SCLASS_PRESET(TAILQ_HEAD_INITIALIZER(_thread_gc_list)); 610 611 SCLASS int _thread_active_threads SCLASS_PRESET(1); 612 613 SCLASS TAILQ_HEAD(atfork_head, pthread_atfork) _thr_atfork_list; 614 SCLASS umtx_t _thr_atfork_lock; 615 616 /* Default thread attributes: */ 617 SCLASS 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: */ 633 SCLASS 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: */ 642 SCLASS struct pthread_cond_attr _pthread_condattr_default 643 SCLASS_PRESET({ 644 .c_pshared = PTHREAD_PROCESS_PRIVATE, 645 .c_clockid = CLOCK_REALTIME 646 }); 647 648 SCLASS pid_t _thr_pid SCLASS_PRESET(0); 649 SCLASS int _thr_guard_default; 650 SCLASS int _thr_stack_default SCLASS_PRESET(THR_STACK_DEFAULT); 651 SCLASS int _thr_stack_initial SCLASS_PRESET(THR_STACK_INITIAL); 652 SCLASS int _thr_page_size; 653 /* Garbage thread count. */ 654 SCLASS int _gc_count SCLASS_PRESET(0); 655 656 SCLASS umtx_t _mutex_static_lock; 657 SCLASS umtx_t _cond_static_lock; 658 SCLASS umtx_t _rwlock_static_lock; 659 SCLASS umtx_t _keytable_lock; 660 SCLASS umtx_t _thr_list_lock; 661 SCLASS 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 671 int _thr_setthreaded(int); 672 int _mutex_cv_lock(pthread_mutex_t *); 673 int _mutex_cv_unlock(pthread_mutex_t *); 674 void _mutex_notify_priochange(struct pthread *, struct pthread *, int); 675 int _mutex_reinit(pthread_mutex_t *); 676 void _mutex_fork(struct pthread *curthread); 677 void _mutex_unlock_private(struct pthread *); 678 void _libpthread_init(struct pthread *); 679 void *_pthread_getspecific(pthread_key_t); 680 int _pthread_cond_init(pthread_cond_t *, const pthread_condattr_t *); 681 int _pthread_cond_destroy(pthread_cond_t *); 682 int _pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *); 683 int _pthread_cond_timedwait(pthread_cond_t *, pthread_mutex_t *, 684 const struct timespec *); 685 int _pthread_cond_signal(pthread_cond_t *); 686 int _pthread_cond_broadcast(pthread_cond_t *); 687 int _pthread_create(pthread_t * thread, const pthread_attr_t * attr, 688 void *(*start_routine) (void *), void *arg); 689 int _pthread_key_create(pthread_key_t *, void (*) (void *)); 690 int _pthread_key_delete(pthread_key_t); 691 int _pthread_mutex_destroy(pthread_mutex_t *); 692 int _pthread_mutex_init(pthread_mutex_t *, const pthread_mutexattr_t *); 693 int _pthread_mutex_lock(pthread_mutex_t *); 694 int _pthread_mutex_trylock(pthread_mutex_t *); 695 int _pthread_mutex_unlock(pthread_mutex_t *); 696 int _pthread_mutexattr_init(pthread_mutexattr_t *); 697 int _pthread_mutexattr_destroy(pthread_mutexattr_t *); 698 int _pthread_mutexattr_settype(pthread_mutexattr_t *, int); 699 int _pthread_once(pthread_once_t *, void (*) (void)); 700 int _pthread_rwlock_init(pthread_rwlock_t *, const pthread_rwlockattr_t *); 701 int _pthread_rwlock_destroy (pthread_rwlock_t *); 702 struct pthread *_pthread_self(void); 703 int _pthread_setspecific(pthread_key_t, const void *); 704 void _pthread_testcancel(void); 705 void _pthread_yield(void); 706 void _pthread_cleanup_push(void (*routine) (void *), void *routine_arg); 707 void _pthread_cleanup_pop(int execute); 708 struct pthread *_thr_alloc(struct pthread *); 709 void _thread_exit(char *, int, char *) __dead2; 710 void _thr_exit_cleanup(void); 711 int _thr_ref_add(struct pthread *, struct pthread *, int); 712 void _thr_ref_delete(struct pthread *, struct pthread *); 713 int _thr_find_thread(struct pthread *, struct pthread *, int); 714 void _thr_rtld_init(void); 715 void _thr_rtld_fini(void); 716 int _thr_stack_alloc(struct pthread_attr *); 717 void _thr_stack_free(struct pthread_attr *); 718 void _thr_free(struct pthread *, struct pthread *); 719 void _thr_gc(struct pthread *); 720 void _thread_cleanupspecific(void); 721 void _thread_dump_info(void); 722 void _thread_printf(int, const char *, ...); 723 void _thr_spinlock_init(void); 724 int _thr_cancel_enter(struct pthread *); 725 void _thr_cancel_leave(struct pthread *, int); 726 void _thr_signal_block(struct pthread *); 727 void _thr_signal_unblock(struct pthread *); 728 void _thr_signal_init(void); 729 void _thr_signal_deinit(void); 730 int _thr_send_sig(struct pthread *, int sig); 731 void _thr_list_init(void); 732 void _thr_hash_add(struct pthread *); 733 void _thr_hash_remove(struct pthread *); 734 struct pthread *_thr_hash_find(struct pthread *); 735 void _thr_link(struct pthread *curthread, struct pthread *thread); 736 void _thr_unlink(struct pthread *curthread, struct pthread *thread); 737 void _thr_suspend_check(struct pthread *curthread); 738 void _thr_assert_lock_level(void) __dead2; 739 void _thr_timer_init(void); 740 void _thr_report_creation(struct pthread *curthread, 741 struct pthread *newthread); 742 void _thr_report_death(struct pthread *curthread); 743 void _thread_bp_create(void); 744 void _thread_bp_death(void); 745 746 /* #include <sys/aio.h> */ 747 #ifdef _SYS_AIO_H_ 748 int __sys_aio_suspend(const struct aiocb * const[], int, const struct timespec *); 749 #endif 750 751 /* #include <fcntl.h> */ 752 #ifdef _SYS_FCNTL_H_ 753 int __sys_fcntl(int, int, ...); 754 int __sys_open(const char *, int, ...); 755 #endif 756 757 /* #include <sys/ioctl.h> */ 758 #ifdef _SYS_IOCTL_H_ 759 int __sys_ioctl(int, unsigned long, ...); 760 #endif 761 762 /* #inclde <sched.h> */ 763 #ifdef _SCHED_H_ 764 int __sys_sched_yield(void); 765 #endif 766 767 /* #include <signal.h> */ 768 #ifdef _SIGNAL_H_ 769 int __sys_kill(pid_t, int); 770 int __sys_sigaction(int, const struct sigaction *, struct sigaction *); 771 int __sys_sigpending(sigset_t *); 772 int __sys_sigprocmask(int, const sigset_t *, sigset_t *); 773 int __sys_sigsuspend(const sigset_t *); 774 int __sys_sigreturn(ucontext_t *); 775 int __sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *); 776 #endif 777 778 /* #include <sys/socket.h> */ 779 #ifdef _SYS_SOCKET_H_ 780 int __sys_accept(int, struct sockaddr *, socklen_t *); 781 int __sys_connect(int, const struct sockaddr *, socklen_t); 782 ssize_t __sys_recv(int, void *, size_t, int); 783 ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *); 784 ssize_t __sys_recvmsg(int, struct msghdr *, int); 785 int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *, 786 off_t *, int); 787 ssize_t __sys_sendmsg(int, const struct msghdr *, int); 788 ssize_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_ 793 ssize_t __sys_readv(int, const struct iovec *, int); 794 ssize_t __sys_writev(int, const struct iovec *, int); 795 #endif 796 797 /* #include <time.h> */ 798 #ifdef _TIME_H_ 799 int __sys_nanosleep(const struct timespec *, struct timespec *); 800 #endif 801 802 /* #include <unistd.h> */ 803 #ifdef _UNISTD_H_ 804 int __sys_close(int); 805 int __sys_execve(const char *, char * const *, char * const *); 806 int __sys_fork(void); 807 int __sys_fsync(int); 808 pid_t __sys_getpid(void); 809 int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 810 ssize_t __sys_read(int, void *, size_t); 811 ssize_t __sys_write(int, const void *, size_t); 812 void __sys_exit(int); 813 int __sys_sigwait(const sigset_t *, int *); 814 int __sys_sigtimedwait(const sigset_t *, siginfo_t *, 815 const struct timespec *); 816 int __sys_sigwaitinfo(const sigset_t *set, siginfo_t *info); 817 #endif 818 819 /* #include <poll.h> */ 820 #ifdef _SYS_POLL_H_ 821 int __sys_poll(struct pollfd *, unsigned, int); 822 #endif 823 824 /* #include <sys/mman.h> */ 825 #ifdef _SYS_MMAN_H_ 826 int __sys_msync(void *, size_t, int); 827 #endif 828 829 static inline int 830 _thr_isthreaded(void) 831 { 832 return (__isthreaded != 0); 833 } 834 835 static inline int 836 _thr_is_inited(void) 837 { 838 return (_thr_initial != NULL); 839 } 840 841 static 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