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>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
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.
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.
32 #ifndef _THR_PRIVATE_H
33 #define _THR_PRIVATE_H
38 #include <sys/types.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>
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)
61 #define FB10_COMPAT(func, sym) \
62 WEAK_REF(func, SYM_FB10(sym)); \
63 SYM_COMPAT(sym, SYM_FB10(sym), FBSD_1.0)
65 #define FB10_COMPAT_PRIVATE(func, sym) \
66 WEAK_REF(func, SYM_FBP10(sym)); \
67 SYM_DEFAULT(sym, SYM_FBP10(sym), FBSDprivate_1.0)
69 #include "pthread_md.h"
71 #include "thread_db.h"
73 #ifdef _PTHREAD_FORCED_UNWIND
78 typedef TAILQ_HEAD(pthreadlist, pthread) pthreadlist;
79 typedef TAILQ_HEAD(atfork_head, pthread_atfork) atfork_head;
80 TAILQ_HEAD(mutex_queue, pthread_mutex);
82 /* Signal to do cancellation */
83 #define SIGCANCEL SIGTHR
86 * Kernel fatal error handler macro.
88 #define PANIC(string) _thread_exit(__FILE__,__LINE__,string)
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)
94 #ifdef _PTHREADS_INVARIANTS
95 #define THR_ASSERT(cond, msg) do { \
96 if (__predict_false(!(cond))) \
100 #define THR_ASSERT(cond, msg)
104 # define STATIC_LIB_REQUIRE(name)
106 # define STATIC_LIB_REQUIRE(name) __asm (".globl " #name)
109 #define TIMESPEC_ADD(dst, src, val) \
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) { \
115 (dst)->tv_nsec -= 1000000000; \
119 #define TIMESPEC_SUB(dst, src, val) \
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) { \
125 (dst)->tv_nsec += 1000000000; \
129 /* Magic cookie set for shared pthread locks and cv's pointers */
130 #define THR_PSHARED_PTR \
131 ((void *)(uintptr_t)((1ULL << (NBBY * sizeof(long) - 1)) | 1))
133 /* XXX These values should be same as those defined in pthread.h */
134 #define THR_MUTEX_INITIALIZER ((struct pthread_mutex *)NULL)
135 #define THR_ADAPTIVE_MUTEX_INITIALIZER ((struct pthread_mutex *)1)
136 #define THR_MUTEX_DESTROYED ((struct pthread_mutex *)2)
137 #define THR_COND_INITIALIZER ((struct pthread_cond *)NULL)
138 #define THR_COND_DESTROYED ((struct pthread_cond *)1)
139 #define THR_RWLOCK_INITIALIZER ((struct pthread_rwlock *)NULL)
140 #define THR_RWLOCK_DESTROYED ((struct pthread_rwlock *)1)
142 #define PMUTEX_FLAG_TYPE_MASK 0x0ff
143 #define PMUTEX_FLAG_PRIVATE 0x100
144 #define PMUTEX_FLAG_DEFERED 0x200
145 #define PMUTEX_TYPE(mtxflags) ((mtxflags) & PMUTEX_FLAG_TYPE_MASK)
147 #define MAX_DEFER_WAITERS 50
149 struct pthread_mutex {
151 * Lock for accesses to this structure.
153 struct umutex m_lock;
160 * Link for all mutexes a thread currently owns, of the same
163 TAILQ_ENTRY(pthread_mutex) m_qe;
164 /* Link for all private mutexes a thread currently owns. */
165 TAILQ_ENTRY(pthread_mutex) m_pqe;
168 struct pthread_mutex_attr {
169 enum pthread_mutextype m_type;
175 #define PTHREAD_MUTEXATTR_STATIC_INITIALIZER \
176 { PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, 0, MUTEX_FLAGS_PRIVATE }
178 struct pthread_cond {
179 __uint32_t __has_user_waiters;
180 __uint32_t __has_kern_waiters;
182 __uint32_t __clock_id;
185 struct pthread_cond_attr {
190 struct pthread_barrier {
191 struct umutex b_lock;
200 struct pthread_barrierattr {
204 struct pthread_spinlock {
205 struct umutex s_lock;
209 * Flags for condition variables.
211 #define COND_FLAGS_PRIVATE 0x01
212 #define COND_FLAGS_INITED 0x02
213 #define COND_FLAGS_BUSY 0x04
216 * Cleanup definitions.
218 struct pthread_cleanup {
219 struct pthread_cleanup *prev;
220 void (*routine)(void *);
225 #define THR_CLEANUP_PUSH(td, func, arg) { \
226 struct pthread_cleanup __cup; \
228 __cup.routine = func; \
229 __cup.routine_arg = arg; \
231 __cup.prev = (td)->cleanup; \
232 (td)->cleanup = &__cup;
234 #define THR_CLEANUP_POP(td, exec) \
235 (td)->cleanup = __cup.prev; \
237 __cup.routine(__cup.routine_arg); \
240 struct pthread_atfork {
241 TAILQ_ENTRY(pthread_atfork) qe;
242 void (*prepare)(void);
243 void (*parent)(void);
247 struct pthread_attr {
248 #define pthread_attr_start_copy sched_policy
253 #define THR_STACK_USER 0x100 /* 0xFF reserved for <pthread.h> */
255 void *stackaddr_attr;
256 size_t stacksize_attr;
257 size_t guardsize_attr;
258 #define pthread_attr_end_copy cpuset
264 struct wake_addr *link;
270 TAILQ_HEAD(, pthread) sq_blocked;
271 SLIST_HEAD(, sleepqueue) sq_freeq;
272 LIST_ENTRY(sleepqueue) sq_hash;
273 SLIST_ENTRY(sleepqueue) sq_flink;
279 * Thread creation state attributes.
281 #define THR_CREATE_RUNNING 0
282 #define THR_CREATE_SUSPENDED 1
285 * Miscellaneous definitions.
287 #define THR_STACK_DEFAULT (sizeof(void *) / 4 * 1024 * 1024)
290 * Maximum size of initial thread's stack. This perhaps deserves to be larger
291 * than the stacks of other threads, since many applications are likely to run
292 * almost entirely on this stack.
294 #define THR_STACK_INITIAL (THR_STACK_DEFAULT * 2)
297 * Define priorities returned by kernel.
299 #define THR_MIN_PRIORITY (_thr_priorities[SCHED_OTHER-1].pri_min)
300 #define THR_MAX_PRIORITY (_thr_priorities[SCHED_OTHER-1].pri_max)
301 #define THR_DEF_PRIORITY (_thr_priorities[SCHED_OTHER-1].pri_default)
303 #define THR_MIN_RR_PRIORITY (_thr_priorities[SCHED_RR-1].pri_min)
304 #define THR_MAX_RR_PRIORITY (_thr_priorities[SCHED_RR-1].pri_max)
305 #define THR_DEF_RR_PRIORITY (_thr_priorities[SCHED_RR-1].pri_default)
307 /* XXX The SCHED_FIFO should have same priority range as SCHED_RR */
308 #define THR_MIN_FIFO_PRIORITY (_thr_priorities[SCHED_FIFO_1].pri_min)
309 #define THR_MAX_FIFO_PRIORITY (_thr_priorities[SCHED_FIFO-1].pri_max)
310 #define THR_DEF_FIFO_PRIORITY (_thr_priorities[SCHED_FIFO-1].pri_default)
312 struct pthread_prio {
318 struct pthread_rwlockattr {
322 struct pthread_rwlock {
335 struct pthread_specific_elem {
341 volatile int allocated;
343 void (*destructor)(void *);
347 * lwpid_t is 32bit but kernel thr API exports tid as long type
348 * to preserve the ABI for M:N model in very early date (r131431).
350 #define TID(thread) ((uint32_t) ((thread)->tid))
356 #define _pthread_startzero tid
357 /* Kernel thread id. */
359 #define TID_TERMINATED 1
362 * Lock for accesses to this thread structure.
366 /* Internal condition variable cycle number. */
369 /* How many low level locks the thread held. */
373 * Set to non-zero when this thread has entered a critical
374 * region. We allow for recursive entries into critical regions.
378 /* Signal blocked counter. */
381 /* Queue entry for list of all threads. */
382 TAILQ_ENTRY(pthread) tle; /* link for all threads in process */
384 /* Queue entry for GC lists. */
385 TAILQ_ENTRY(pthread) gcle;
387 /* Hash queue entry. */
388 LIST_ENTRY(pthread) hle;
390 /* Sleep queue entry */
391 TAILQ_ENTRY(pthread) wle;
393 /* Threads reference count. */
397 * Thread start routine, argument, stack pointer and thread
400 void *(*start_routine)(void *);
402 struct pthread_attr attr;
404 #define SHOULD_CANCEL(thr) \
405 ((thr)->cancel_pending && (thr)->cancel_enable && \
406 (thr)->no_cancel == 0)
408 /* Cancellation is enabled */
411 /* Cancellation request is pending */
414 /* Thread is at cancellation point */
417 /* Cancellation is temporarily disabled */
420 /* Asynchronouse cancellation is enabled */
423 /* Cancellation is in progress */
426 /* Thread temporary signal mask. */
429 /* Thread should unblock SIGCANCEL. */
430 int unblock_sigcancel;
432 /* In sigsuspend state */
435 /* deferred signal info */
436 siginfo_t deferred_siginfo;
438 /* signal mask to restore. */
439 sigset_t deferred_sigmask;
441 /* the sigaction should be used for deferred signal. */
442 struct sigaction deferred_sigact;
444 /* deferred signal delivery is performed, do not reenter. */
447 /* Force new thread to exit. */
451 enum pthread_state state;
454 * Error variable used instead of errno. The function __error()
455 * returns a pointer to this.
460 * The joiner is the thread that is joining to this thread. The
461 * join status keeps track of a join operation to another thread.
463 struct pthread *joiner;
465 /* Miscellaneous flags; only set with scheduling lock held. */
467 #define THR_FLAGS_PRIVATE 0x0001
468 #define THR_FLAGS_NEED_SUSPEND 0x0002 /* thread should be suspended */
469 #define THR_FLAGS_SUSPENDED 0x0004 /* thread is suspended */
470 #define THR_FLAGS_DETACHED 0x0008 /* thread is detached */
472 /* Thread list flags; only set with thread list lock held. */
474 #define TLFLAGS_GC_SAFE 0x0001 /* thread safe for cleaning */
475 #define TLFLAGS_IN_TDLIST 0x0002 /* thread in all thread list */
476 #define TLFLAGS_IN_GCLIST 0x0004 /* thread in gc list */
479 * Queues of the owned mutexes. Private queue must have index
480 * + 1 of the corresponding full queue.
482 #define TMQ_NORM 0 /* NORMAL or PRIO_INHERIT normal */
483 #define TMQ_NORM_PRIV 1 /* NORMAL or PRIO_INHERIT normal priv */
484 #define TMQ_NORM_PP 2 /* PRIO_PROTECT normal mutexes */
485 #define TMQ_NORM_PP_PRIV 3 /* PRIO_PROTECT normal priv */
487 struct mutex_queue mq[TMQ_NITEMS];
490 struct pthread_specific_elem *specific;
491 int specific_data_count;
493 /* Number rwlocks rdlocks held. */
497 * Current locks bitmap for rtld. */
500 /* Thread control block */
503 /* Cleanup handlers Link List */
504 struct pthread_cleanup *cleanup;
506 #ifdef _PTHREAD_FORCED_UNWIND
507 struct _Unwind_Exception ex;
508 void *unwind_stackend;
513 * Magic value to help recognize a valid thread structure
514 * from an invalid one:
516 #define THR_MAGIC ((u_int32_t) 0xd09ba115)
519 /* Enable event reporting */
526 td_event_msg_t event_buf;
531 /* Referenced mutex. */
532 struct pthread_mutex *mutex_obj;
534 /* Thread will sleep. */
537 /* Number of threads deferred. */
540 /* Deferred threads from pthread_cond_signal. */
541 unsigned int *defer_waiters[MAX_DEFER_WAITERS];
542 #define _pthread_endzero wake_addr
544 struct wake_addr *wake_addr;
545 #define WAKE_ADDR(td) ((td)->wake_addr)
548 struct sleepqueue *sleepqueue;
552 #define THR_SHOULD_GC(thrd) \
553 ((thrd)->refcount == 0 && (thrd)->state == PS_DEAD && \
554 ((thrd)->flags & THR_FLAGS_DETACHED) != 0)
556 #define THR_IN_CRITICAL(thrd) \
557 (((thrd)->locklevel > 0) || \
558 ((thrd)->critical_count > 0))
560 #define THR_CRITICAL_ENTER(thrd) \
561 (thrd)->critical_count++
563 #define THR_CRITICAL_LEAVE(thrd) \
565 (thrd)->critical_count--; \
569 #define THR_UMUTEX_TRYLOCK(thrd, lck) \
570 _thr_umutex_trylock((lck), TID(thrd))
572 #define THR_UMUTEX_LOCK(thrd, lck) \
573 _thr_umutex_lock((lck), TID(thrd))
575 #define THR_UMUTEX_TIMEDLOCK(thrd, lck, timo) \
576 _thr_umutex_timedlock((lck), TID(thrd), (timo))
578 #define THR_UMUTEX_UNLOCK(thrd, lck) \
579 _thr_umutex_unlock((lck), TID(thrd))
581 #define THR_LOCK_ACQUIRE(thrd, lck) \
583 (thrd)->locklevel++; \
584 _thr_umutex_lock(lck, TID(thrd)); \
587 #define THR_LOCK_ACQUIRE_SPIN(thrd, lck) \
589 (thrd)->locklevel++; \
590 _thr_umutex_lock_spin(lck, TID(thrd)); \
593 #ifdef _PTHREADS_INVARIANTS
594 #define THR_ASSERT_LOCKLEVEL(thrd) \
596 if (__predict_false((thrd)->locklevel <= 0)) \
597 _thr_assert_lock_level(); \
600 #define THR_ASSERT_LOCKLEVEL(thrd)
603 #define THR_LOCK_RELEASE(thrd, lck) \
605 THR_ASSERT_LOCKLEVEL(thrd); \
606 _thr_umutex_unlock((lck), TID(thrd)); \
607 (thrd)->locklevel--; \
611 #define THR_LOCK(curthrd) THR_LOCK_ACQUIRE(curthrd, &(curthrd)->lock)
612 #define THR_UNLOCK(curthrd) THR_LOCK_RELEASE(curthrd, &(curthrd)->lock)
613 #define THR_THREAD_LOCK(curthrd, thr) THR_LOCK_ACQUIRE(curthrd, &(thr)->lock)
614 #define THR_THREAD_UNLOCK(curthrd, thr) THR_LOCK_RELEASE(curthrd, &(thr)->lock)
616 #define THREAD_LIST_RDLOCK(curthrd) \
618 (curthrd)->locklevel++; \
619 _thr_rwl_rdlock(&_thr_list_lock); \
622 #define THREAD_LIST_WRLOCK(curthrd) \
624 (curthrd)->locklevel++; \
625 _thr_rwl_wrlock(&_thr_list_lock); \
628 #define THREAD_LIST_UNLOCK(curthrd) \
630 _thr_rwl_unlock(&_thr_list_lock); \
631 (curthrd)->locklevel--; \
636 * Macros to insert/remove threads to the all thread list and
639 #define THR_LIST_ADD(thrd) do { \
640 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) == 0) { \
641 TAILQ_INSERT_HEAD(&_thread_list, thrd, tle); \
642 _thr_hash_add(thrd); \
643 (thrd)->tlflags |= TLFLAGS_IN_TDLIST; \
646 #define THR_LIST_REMOVE(thrd) do { \
647 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) != 0) { \
648 TAILQ_REMOVE(&_thread_list, thrd, tle); \
649 _thr_hash_remove(thrd); \
650 (thrd)->tlflags &= ~TLFLAGS_IN_TDLIST; \
653 #define THR_GCLIST_ADD(thrd) do { \
654 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) == 0) { \
655 TAILQ_INSERT_HEAD(&_thread_gc_list, thrd, gcle);\
656 (thrd)->tlflags |= TLFLAGS_IN_GCLIST; \
660 #define THR_GCLIST_REMOVE(thrd) do { \
661 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) != 0) { \
662 TAILQ_REMOVE(&_thread_gc_list, thrd, gcle); \
663 (thrd)->tlflags &= ~TLFLAGS_IN_GCLIST; \
668 #define THR_REF_ADD(curthread, pthread) { \
669 THR_CRITICAL_ENTER(curthread); \
670 pthread->refcount++; \
673 #define THR_REF_DEL(curthread, pthread) { \
674 pthread->refcount--; \
675 THR_CRITICAL_LEAVE(curthread); \
678 #define GC_NEEDED() (_gc_count >= 5)
680 #define SHOULD_REPORT_EVENT(curthr, e) \
681 (curthr->report_events && \
682 (((curthr)->event_mask | _thread_event_mask ) & e) != 0)
684 extern int __isthreaded;
687 * Global variables for the pthread kernel.
690 extern char *_usrstack __hidden;
691 extern struct pthread *_thr_initial __hidden;
694 extern int _libthr_debug;
695 extern int _thread_event_mask;
696 extern struct pthread *_thread_last_event;
698 /* List of all threads: */
699 extern pthreadlist _thread_list;
701 /* List of threads needing GC: */
702 extern pthreadlist _thread_gc_list __hidden;
704 extern int _thread_active_threads;
705 extern atfork_head _thr_atfork_list __hidden;
706 extern struct urwlock _thr_atfork_lock __hidden;
708 /* Default thread attributes: */
709 extern struct pthread_attr _pthread_attr_default __hidden;
711 /* Default mutex attributes: */
712 extern struct pthread_mutex_attr _pthread_mutexattr_default __hidden;
713 extern struct pthread_mutex_attr _pthread_mutexattr_adaptive_default __hidden;
715 /* Default condition variable attributes: */
716 extern struct pthread_cond_attr _pthread_condattr_default __hidden;
718 extern struct pthread_prio _thr_priorities[] __hidden;
720 extern pid_t _thr_pid __hidden;
721 extern int _thr_is_smp __hidden;
723 extern size_t _thr_guard_default __hidden;
724 extern size_t _thr_stack_default __hidden;
725 extern size_t _thr_stack_initial __hidden;
726 extern int _thr_page_size __hidden;
727 extern int _thr_spinloops __hidden;
728 extern int _thr_yieldloops __hidden;
729 extern int _thr_queuefifo __hidden;
731 /* Garbage thread count. */
732 extern int _gc_count __hidden;
734 extern struct umutex _mutex_static_lock __hidden;
735 extern struct umutex _cond_static_lock __hidden;
736 extern struct umutex _rwlock_static_lock __hidden;
737 extern struct umutex _keytable_lock __hidden;
738 extern struct urwlock _thr_list_lock __hidden;
739 extern struct umutex _thr_event_lock __hidden;
740 extern struct umutex _suspend_all_lock __hidden;
741 extern int _suspend_all_waiters __hidden;
742 extern int _suspend_all_cycle __hidden;
743 extern struct pthread *_single_thread __hidden;
746 * Function prototype definitions.
749 int _thr_setthreaded(int) __hidden;
750 int _mutex_cv_lock(struct pthread_mutex *, int) __hidden;
751 int _mutex_cv_unlock(struct pthread_mutex *, int *, int *) __hidden;
752 int _mutex_cv_attach(struct pthread_mutex *, int) __hidden;
753 int _mutex_cv_detach(struct pthread_mutex *, int *) __hidden;
754 int _mutex_owned(struct pthread *, const struct pthread_mutex *) __hidden;
755 int _mutex_reinit(pthread_mutex_t *) __hidden;
756 void _mutex_fork(struct pthread *curthread) __hidden;
757 void _libpthread_init(struct pthread *) __hidden;
758 struct pthread *_thr_alloc(struct pthread *) __hidden;
759 void _thread_exit(const char *, int, const char *) __hidden __dead2;
760 int _thr_ref_add(struct pthread *, struct pthread *, int) __hidden;
761 void _thr_ref_delete(struct pthread *, struct pthread *) __hidden;
762 void _thr_ref_delete_unlocked(struct pthread *, struct pthread *) __hidden;
763 int _thr_find_thread(struct pthread *, struct pthread *, int) __hidden;
764 void _thr_rtld_init(void) __hidden;
765 void _thr_rtld_postfork_child(void) __hidden;
766 int _thr_stack_alloc(struct pthread_attr *) __hidden;
767 void _thr_stack_free(struct pthread_attr *) __hidden;
768 void _thr_free(struct pthread *, struct pthread *) __hidden;
769 void _thr_gc(struct pthread *) __hidden;
770 void _thread_cleanupspecific(void) __hidden;
771 void _thread_printf(int, const char *, ...) __hidden;
772 void _thr_spinlock_init(void) __hidden;
773 void _thr_cancel_enter(struct pthread *) __hidden;
774 void _thr_cancel_enter2(struct pthread *, int) __hidden;
775 void _thr_cancel_leave(struct pthread *, int) __hidden;
776 void _thr_testcancel(struct pthread *) __hidden;
777 void _thr_signal_block(struct pthread *) __hidden;
778 void _thr_signal_unblock(struct pthread *) __hidden;
779 void _thr_signal_init(int) __hidden;
780 void _thr_signal_deinit(void) __hidden;
781 int _thr_send_sig(struct pthread *, int sig) __hidden;
782 void _thr_list_init(void) __hidden;
783 void _thr_hash_add(struct pthread *) __hidden;
784 void _thr_hash_remove(struct pthread *) __hidden;
785 struct pthread *_thr_hash_find(struct pthread *) __hidden;
786 void _thr_link(struct pthread *, struct pthread *) __hidden;
787 void _thr_unlink(struct pthread *, struct pthread *) __hidden;
788 void _thr_assert_lock_level(void) __hidden __dead2;
789 void _thr_ast(struct pthread *) __hidden;
790 void _thr_once_init(void) __hidden;
791 void _thr_report_creation(struct pthread *curthread,
792 struct pthread *newthread) __hidden;
793 void _thr_report_death(struct pthread *curthread) __hidden;
794 int _thr_getscheduler(lwpid_t, int *, struct sched_param *) __hidden;
795 int _thr_setscheduler(lwpid_t, int, const struct sched_param *) __hidden;
796 void _thr_signal_prefork(void) __hidden;
797 void _thr_signal_postfork(void) __hidden;
798 void _thr_signal_postfork_child(void) __hidden;
799 void _thr_suspend_all_lock(struct pthread *) __hidden;
800 void _thr_suspend_all_unlock(struct pthread *) __hidden;
801 void _thr_try_gc(struct pthread *, struct pthread *) __hidden;
802 int _rtp_to_schedparam(const struct rtprio *rtp, int *policy,
803 struct sched_param *param) __hidden;
804 int _schedparam_to_rtp(int policy, const struct sched_param *param,
805 struct rtprio *rtp) __hidden;
806 void _thread_bp_create(void);
807 void _thread_bp_death(void);
808 int _sched_yield(void);
810 void _pthread_cleanup_push(void (*)(void *), void *);
811 void _pthread_cleanup_pop(int);
812 void _pthread_exit_mask(void *status, sigset_t *mask) __dead2 __hidden;
813 void _pthread_cancel_enter(int maycancel);
814 void _pthread_cancel_leave(int maycancel);
816 /* #include <fcntl.h> */
818 int __sys_fcntl(int, int, ...);
819 int __sys_openat(int, const char *, int, ...);
822 /* #include <signal.h> */
824 int __sys_kill(pid_t, int);
825 int __sys_sigaction(int, const struct sigaction *, struct sigaction *);
826 int __sys_sigpending(sigset_t *);
827 int __sys_sigprocmask(int, const sigset_t *, sigset_t *);
828 int __sys_sigsuspend(const sigset_t *);
829 int __sys_sigreturn(const ucontext_t *);
830 int __sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *);
831 int __sys_sigwait(const sigset_t *, int *);
832 int __sys_sigtimedwait(const sigset_t *, siginfo_t *,
833 const struct timespec *);
834 int __sys_sigwaitinfo(const sigset_t *set, siginfo_t *info);
837 /* #include <time.h> */
839 int __sys_nanosleep(const struct timespec *, struct timespec *);
842 /* #include <sys/ucontext.h> */
843 #ifdef _SYS_UCONTEXT_H_
844 int __sys_setcontext(const ucontext_t *ucp);
845 int __sys_swapcontext(ucontext_t *oucp, const ucontext_t *ucp);
848 /* #include <unistd.h> */
850 int __sys_close(int);
851 int __sys_fork(void);
852 pid_t __sys_getpid(void);
853 ssize_t __sys_read(int, void *, size_t);
854 void __sys_exit(int);
858 _thr_isthreaded(void)
860 return (__isthreaded != 0);
866 return (_thr_initial != NULL);
870 _thr_check_init(void)
872 if (_thr_initial == NULL)
873 _libpthread_init(NULL);
876 struct wake_addr *_thr_alloc_wake_addr(void);
877 void _thr_release_wake_addr(struct wake_addr *);
878 int _thr_sleep(struct pthread *, int, const struct timespec *);
880 void _thr_wake_addr_init(void) __hidden;
883 _thr_clear_wake(struct pthread *td)
885 td->wake_addr->value = 0;
889 _thr_is_woken(struct pthread *td)
891 return td->wake_addr->value != 0;
895 _thr_set_wake(unsigned int *waddr)
898 _thr_umtx_wake(waddr, INT_MAX, 0);
901 void _thr_wake_all(unsigned int *waddrs[], int) __hidden;
903 static inline struct pthread *
904 _sleepq_first(struct sleepqueue *sq)
906 return TAILQ_FIRST(&sq->sq_blocked);
909 void _sleepq_init(void) __hidden;
910 struct sleepqueue *_sleepq_alloc(void) __hidden;
911 void _sleepq_free(struct sleepqueue *) __hidden;
912 void _sleepq_lock(void *) __hidden;
913 void _sleepq_unlock(void *) __hidden;
914 struct sleepqueue *_sleepq_lookup(void *) __hidden;
915 void _sleepq_add(void *, struct pthread *) __hidden;
916 int _sleepq_remove(struct sleepqueue *, struct pthread *) __hidden;
917 void _sleepq_drop(struct sleepqueue *,
918 void (*cb)(struct pthread *, void *arg), void *) __hidden;
920 int _pthread_mutex_init_calloc_cb(pthread_mutex_t *mutex,
921 void *(calloc_cb)(size_t, size_t));
924 void __pthread_cxa_finalize(struct dl_phdr_info *phdr_info);
925 void _thr_tsd_unload(struct dl_phdr_info *phdr_info) __hidden;
926 void _thr_sigact_unload(struct dl_phdr_info *phdr_info) __hidden;
927 void _thr_stack_fix_protection(struct pthread *thrd);
929 int *__error_threaded(void) __hidden;
930 void __thr_interpose_libc(void) __hidden;
931 pid_t __thr_fork(void);
932 int __thr_setcontext(const ucontext_t *ucp);
933 int __thr_sigaction(int sig, const struct sigaction *act,
934 struct sigaction *oact) __hidden;
935 int __thr_sigprocmask(int how, const sigset_t *set, sigset_t *oset);
936 int __thr_sigsuspend(const sigset_t * set);
937 int __thr_sigtimedwait(const sigset_t *set, siginfo_t *info,
938 const struct timespec * timeout);
939 int __thr_sigwait(const sigset_t *set, int *sig);
940 int __thr_sigwaitinfo(const sigset_t *set, siginfo_t *info);
941 int __thr_swapcontext(ucontext_t *oucp, const ucontext_t *ucp);
943 void __thr_map_stacks_exec(void);
946 void __thr_spinunlock(struct _spinlock *lck);
947 void __thr_spinlock(struct _spinlock *lck);
949 struct tcb *_tcb_ctor(struct pthread *, int);
950 void _tcb_dtor(struct tcb *);
952 void __thr_pshared_init(void) __hidden;
953 void *__thr_pshared_offpage(void *key, int doalloc) __hidden;
954 void __thr_pshared_destroy(void *key) __hidden;
958 #endif /* !_THR_PRIVATE_H */