2 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
32 * Private thread definitions for the uthread kernel.
34 * $FreeBSD: src/lib/libpthread/thread/thr_private.h,v 1.120 2004/11/01 10:49:34 davidxu Exp $
35 * $DragonFly: src/lib/libthread_xu/thread/thr_private.h,v 1.2 2005/02/21 13:47:21 davidxu Exp $
38 #ifndef _THR_PRIVATE_H
39 #define _THR_PRIVATE_H
44 #include <sys/types.h>
46 #include <sys/cdefs.h>
47 #include <sys/queue.h>
48 #include <machine/atomic.h>
56 #include <pthread_np.h>
58 #include "pthread_md.h"
62 * Evaluate the storage class specifier.
64 #ifdef GLOBAL_PTHREAD_PRIVATE
66 #define SCLASS_PRESET(x...) = x
69 #define SCLASS_PRESET(x...)
72 /* Signal to do cancellation */
76 * Kernel fatal error handler macro.
78 #define PANIC(string) _thread_exit(__FILE__,__LINE__,string)
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)
85 #define __predict_true(exp) (exp)
86 #define __predict_false(exp) (exp)
89 #ifdef _PTHREADS_INVARIANTS
90 #define THR_ASSERT(cond, msg) do { \
91 if (__predict_false(!(cond))) \
95 #define THR_ASSERT(cond, msg)
98 #define TIMESPEC_ADD(dst, src, val) \
100 (dst)->tv_sec = (src)->tv_sec + (val)->tv_sec; \
101 (dst)->tv_nsec = (src)->tv_nsec + (val)->tv_nsec; \
102 if ((dst)->tv_nsec > 1000000000) { \
104 (dst)->tv_nsec -= 1000000000; \
108 #define TIMESPEC_SUB(dst, src, val) \
110 (dst)->tv_sec = (src)->tv_sec - (val)->tv_sec; \
111 (dst)->tv_nsec = (src)->tv_nsec - (val)->tv_nsec; \
112 if ((dst)->tv_nsec < 0) { \
114 (dst)->tv_nsec += 1000000000; \
118 struct pthread_mutex {
120 * Lock for accesses to this structure.
122 volatile umtx_t m_lock;
123 enum pthread_mutextype m_type;
125 TAILQ_HEAD(mutex_head, pthread) m_queue;
126 struct pthread *m_owner;
132 * Used for priority inheritence and protection.
134 * m_prio - For priority inheritence, the highest active
135 * priority (threads locking the mutex inherit
136 * this priority). For priority protection, the
137 * ceiling priority of this mutex.
138 * m_saved_prio - mutex owners inherited priority before
139 * taking the mutex, restored when the owner
146 * Link for list of all mutexes a thread currently owns.
148 TAILQ_ENTRY(pthread_mutex) m_qe;
151 #define TAILQ_INITIALIZER { NULL, NULL }
153 #define PTHREAD_MUTEX_STATIC_INITIALIZER \
154 {0, PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, TAILQ_INITIALIZER, \
155 NULL, { NULL }, MUTEX_FLAGS_PRIVATE, 0, 0, 0, TAILQ_INITIALIZER }
159 #define MUTEX_FLAGS_PRIVATE 0x01
160 #define MUTEX_FLAGS_INITED 0x02
161 #define MUTEX_FLAGS_BUSY 0x04
163 struct pthread_mutex_attr {
164 enum pthread_mutextype m_type;
170 #define PTHREAD_MUTEXATTR_STATIC_INITIALIZER \
171 { PTHREAD_MUTEX_DEFAULT, PTHREAD_PRIO_NONE, 0, MUTEX_FLAGS_PRIVATE }
173 struct pthread_cond {
175 * Lock for accesses to this structure.
177 volatile umtx_t c_lock;
178 volatile umtx_t c_seqno;
179 volatile int c_waiters;
180 volatile int c_wakeups;
185 struct pthread_cond_attr {
190 struct pthread_barrier {
191 volatile umtx_t b_lock;
192 volatile umtx_t b_cycle;
193 volatile int b_count;
194 volatile int b_waiters;
197 struct pthread_barrierattr {
201 struct pthread_spinlock {
202 volatile umtx_t s_lock;
206 * Flags for condition variables.
208 #define COND_FLAGS_PRIVATE 0x01
209 #define COND_FLAGS_INITED 0x02
210 #define COND_FLAGS_BUSY 0x04
213 * Cleanup definitions.
215 struct pthread_cleanup {
216 struct pthread_cleanup *next;
222 #define THR_CLEANUP_PUSH(td, func, arg) { \
223 struct pthread_cleanup __cup; \
225 __cup.routine = func; \
226 __cup.routine_arg = arg; \
228 __cup.next = (td)->cleanup; \
229 (td)->cleanup = &__cup;
231 #define THR_CLEANUP_POP(td, exec) \
232 (td)->cleanup = __cup.next; \
234 __cup.routine(__cup.routine_arg); \
237 struct pthread_atfork {
238 TAILQ_ENTRY(pthread_atfork) qe;
239 void (*prepare)(void);
240 void (*parent)(void);
244 struct pthread_attr {
250 #define THR_STACK_USER 0x100 /* 0xFF reserved for <pthread.h> */
253 void (*cleanup_attr)();
254 void *stackaddr_attr;
255 size_t stacksize_attr;
256 size_t guardsize_attr;
260 * Thread creation state attributes.
262 #define THR_CREATE_RUNNING 0
263 #define THR_CREATE_SUSPENDED 1
266 * Miscellaneous definitions.
268 #define THR_STACK_DEFAULT (sizeof(void *) / 4 * 1024 * 1024)
271 * Maximum size of initial thread's stack. This perhaps deserves to be larger
272 * than the stacks of other threads, since many applications are likely to run
273 * almost entirely on this stack.
275 #define THR_STACK_INITIAL (THR_STACK_DEFAULT * 2)
278 * Define the different priority ranges. All applications have thread
279 * priorities constrained within 0-31. The threads library raises the
280 * priority when delivering signals in order to ensure that signal
281 * delivery happens (from the POSIX spec) "as soon as possible".
282 * In the future, the threads library will also be able to map specific
283 * threads into real-time (cooperating) processes or kernel threads.
284 * The RT and SIGNAL priorities will be used internally and added to
285 * thread base priorities so that the scheduling queue can handle both
286 * normal and RT priority threads with and without signal handling.
288 * The approach taken is that, within each class, signal delivery
289 * always has priority over thread execution.
291 #define THR_DEFAULT_PRIORITY 15
292 #define THR_MIN_PRIORITY 0
293 #define THR_MAX_PRIORITY 31 /* 0x1F */
294 #define THR_SIGNAL_PRIORITY 32 /* 0x20 */
295 #define THR_RT_PRIORITY 64 /* 0x40 */
296 #define THR_FIRST_PRIORITY THR_MIN_PRIORITY
297 #define THR_LAST_PRIORITY \
298 (THR_MAX_PRIORITY + THR_SIGNAL_PRIORITY + THR_RT_PRIORITY)
299 #define THR_BASE_PRIORITY(prio) ((prio) & THR_MAX_PRIORITY)
302 * Time slice period in microseconds.
304 #define TIMESLICE_USEC 20000
306 struct pthread_rwlockattr {
310 struct pthread_rwlock {
311 pthread_mutex_t lock; /* monitor lock */
312 pthread_cond_t read_signal;
313 pthread_cond_t write_signal;
314 int state; /* 0 = idle >0 = # of readers -1 = writer */
326 union pthread_wait_data {
327 pthread_mutex_t mutex;
330 struct pthread_specific_elem {
336 volatile int allocated;
339 void (*destructor)(void *);
347 * Magic value to help recognize a valid thread structure
348 * from an invalid one:
350 #define THR_MAGIC ((u_int32_t) 0xd09ba115)
353 u_int64_t uniqueid; /* for gdb */
356 * Lock for accesses to this thread structure.
360 /* Thread is terminated in kernel, written by kernel. */
363 /* Kernel thread id. */
366 /* Internal condition variable cycle number. */
369 /* How many low level locks the thread held. */
372 /* Signal blocked counter. */
375 /* Queue entry for list of all threads. */
376 TAILQ_ENTRY(pthread) tle; /* link for all threads in process */
378 /* Queue entry for GC lists. */
379 TAILQ_ENTRY(pthread) gcle;
381 /* Hash queue entry. */
382 LIST_ENTRY(pthread) hle;
384 /* Threads reference count. */
388 * Thread start routine, argument, stack pointer and thread
391 void *(*start_routine)(void *);
393 struct pthread_attr attr;
396 * Cancelability flags
398 #define THR_CANCEL_DISABLE 0x0001
399 #define THR_CANCEL_EXITING 0x0002
400 #define THR_CANCEL_AT_POINT 0x0004
401 #define THR_CANCEL_NEEDED 0x0008
402 #define SHOULD_CANCEL(val) \
403 (((val) & (THR_CANCEL_DISABLE | THR_CANCEL_EXITING | \
404 THR_CANCEL_NEEDED)) == THR_CANCEL_NEEDED)
406 #define SHOULD_ASYNC_CANCEL(val) \
407 (((val) & (THR_CANCEL_DISABLE | THR_CANCEL_EXITING | \
408 THR_CANCEL_NEEDED | THR_CANCEL_AT_POINT)) == \
409 (THR_CANCEL_NEEDED | THR_CANCEL_AT_POINT))
412 /* Thread temporary signal mask. */
419 * Error variable used instead of errno. The function __error()
420 * returns a pointer to this.
425 * The joiner is the thread that is joining to this thread. The
426 * join status keeps track of a join operation to another thread.
428 struct pthread *joiner;
431 * The current thread can belong to a priority mutex queue.
432 * This is the synchronization queue link.
434 TAILQ_ENTRY(pthread) sqe;
437 union pthread_wait_data data;
440 #define THR_FLAGS_IN_SYNCQ 0x0001
442 /* Miscellaneous flags; only set with scheduling lock held. */
444 #define THR_FLAGS_PRIVATE 0x0001
445 #define THR_FLAGS_NEED_SUSPEND 0x0002 /* thread should be suspended */
446 #define THR_FLAGS_SUSPENDED 0x0004 /* thread is suspended */
448 /* Thread list flags; only set with thread list lock held. */
450 #define TLFLAGS_GC_SAFE 0x0001 /* thread safe for cleaning */
451 #define TLFLAGS_IN_TDLIST 0x0002 /* thread in all thread list */
452 #define TLFLAGS_IN_GCLIST 0x0004 /* thread in gc list */
453 #define TLFLAGS_DETACHED 0x0008 /* thread is detached */
456 * Base priority is the user setable and retrievable priority
457 * of the thread. It is only affected by explicit calls to
458 * set thread priority and upon thread creation via a thread
459 * attribute or default priority.
464 * Inherited priority is the priority a thread inherits by
465 * taking a priority inheritence or protection mutex. It
466 * is not affected by base priority changes. Inherited
467 * priority defaults to and remains 0 until a mutex is taken
468 * that is being waited on by any other thread whose priority
471 char inherited_priority;
474 * Active priority is always the maximum of the threads base
475 * priority and inherited priority. When there is a change
476 * in either the base or inherited priority, the active
477 * priority must be recalculated.
479 char active_priority;
481 /* Number of priority ceiling or protection mutexes owned. */
482 int priority_mutex_count;
484 /* Queue of currently owned simple type mutexes. */
485 TAILQ_HEAD(, pthread_mutex) mutexq;
487 /* Queue of currently owned priority type mutexs. */
488 TAILQ_HEAD(, pthread_mutex) pri_mutexq;
491 struct pthread_specific_elem *specific;
492 int specific_data_count;
494 /* Number rwlocks rdlocks held. */
498 * Current locks bitmap for rtld. */
501 /* Thread control block */
504 /* Cleanup handlers Link List */
505 struct pthread_cleanup *cleanup;
508 #define THR_UMTX_TRYLOCK(thrd, lck) \
509 _thr_umtx_trylock((lck), (thrd)->tid)
511 #define THR_UMTX_LOCK(thrd, lck) \
512 _thr_umtx_lock((lck), (thrd)->tid)
514 #define THR_UMTX_TIMEDLOCK(thrd, lck, timo) \
515 _thr_umtx_timedlock((lck), (thrd)->tid, (timo))
517 #define THR_UMTX_UNLOCK(thrd, lck) \
518 _thr_umtx_unlock((lck), (thrd)->tid)
520 #define THR_LOCK_ACQUIRE(thrd, lck) \
522 (thrd)->locklevel++; \
523 _thr_umtx_lock(lck, (thrd)->tid); \
526 #define THR_LOCK_RELEASE(thrd, lck) \
528 if ((thrd)->locklevel > 0) { \
529 _thr_umtx_unlock((lck), (thrd)->tid); \
530 (thrd)->locklevel--; \
532 _thr_assert_lock_level(); \
536 #define THR_LOCK(curthrd) THR_LOCK_ACQUIRE(curthrd, &(curthrd)->lock)
537 #define THR_UNLOCK(curthrd) THR_LOCK_RELEASE(curthrd, &(curthrd)->lock)
538 #define THR_THREAD_LOCK(curthrd, thr) THR_LOCK_ACQUIRE(curthrd, &(thr)->lock)
539 #define THR_THREAD_UNLOCK(curthrd, thr) THR_LOCK_RELEASE(curthrd, &(thr)->lock)
541 #define THREAD_LIST_LOCK(curthrd) \
543 THR_LOCK_ACQUIRE((curthrd), &_thr_list_lock); \
546 #define THREAD_LIST_UNLOCK(curthrd) \
548 THR_LOCK_RELEASE((curthrd), &_thr_list_lock); \
552 * Macros to insert/remove threads to the all thread list and
555 #define THR_LIST_ADD(thrd) do { \
556 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) == 0) { \
557 TAILQ_INSERT_HEAD(&_thread_list, thrd, tle); \
558 _thr_hash_add(thrd); \
559 (thrd)->tlflags |= TLFLAGS_IN_TDLIST; \
562 #define THR_LIST_REMOVE(thrd) do { \
563 if (((thrd)->tlflags & TLFLAGS_IN_TDLIST) != 0) { \
564 TAILQ_REMOVE(&_thread_list, thrd, tle); \
565 _thr_hash_remove(thrd); \
566 (thrd)->tlflags &= ~TLFLAGS_IN_TDLIST; \
569 #define THR_GCLIST_ADD(thrd) do { \
570 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) == 0) { \
571 TAILQ_INSERT_HEAD(&_thread_gc_list, thrd, gcle);\
572 (thrd)->tlflags |= TLFLAGS_IN_GCLIST; \
576 #define THR_GCLIST_REMOVE(thrd) do { \
577 if (((thrd)->tlflags & TLFLAGS_IN_GCLIST) != 0) { \
578 TAILQ_REMOVE(&_thread_gc_list, thrd, gcle); \
579 (thrd)->tlflags &= ~TLFLAGS_IN_GCLIST; \
584 #define GC_NEEDED() (_gc_count >= 5)
586 #define THR_IN_SYNCQ(thrd) (((thrd)->sflags & THR_FLAGS_IN_SYNCQ) != 0)
588 extern int __isthreaded;
591 * Global variables for the pthread kernel.
594 SCLASS void *_usrstack SCLASS_PRESET(NULL);
595 SCLASS struct pthread *_thr_initial SCLASS_PRESET(NULL);
597 SCLASS int _libthread_xu_debug SCLASS_PRESET(0);
598 SCLASS int _thread_scope_system SCLASS_PRESET(0);
600 /* List of all threads: */
601 SCLASS TAILQ_HEAD(, pthread) _thread_list
602 SCLASS_PRESET(TAILQ_HEAD_INITIALIZER(_thread_list));
604 /* List of threads needing GC: */
605 SCLASS TAILQ_HEAD(, pthread) _thread_gc_list
606 SCLASS_PRESET(TAILQ_HEAD_INITIALIZER(_thread_gc_list));
608 SCLASS int _thread_active_threads SCLASS_PRESET(1);
610 SCLASS TAILQ_HEAD(atfork_head, pthread_atfork) _thr_atfork_list;
611 SCLASS umtx_t _thr_atfork_lock;
613 /* Default thread attributes: */
614 SCLASS struct pthread_attr _pthread_attr_default
616 .sched_policy = SCHED_RR,
618 .sched_interval = TIMESLICE_USEC,
619 .prio = THR_DEFAULT_PRIORITY,
620 .suspend = THR_CREATE_RUNNING,
623 .cleanup_attr = NULL,
624 .stackaddr_attr = NULL,
625 .stacksize_attr = THR_STACK_DEFAULT,
629 /* Default mutex attributes: */
630 SCLASS struct pthread_mutex_attr _pthread_mutexattr_default
632 .m_type = PTHREAD_MUTEX_DEFAULT,
633 .m_protocol = PTHREAD_PRIO_NONE,
638 /* Default condition variable attributes: */
639 SCLASS struct pthread_cond_attr _pthread_condattr_default
641 .c_pshared = PTHREAD_PROCESS_PRIVATE,
642 .c_clockid = CLOCK_REALTIME
645 SCLASS pid_t _thr_pid SCLASS_PRESET(0);
646 SCLASS int _thr_guard_default;
647 SCLASS int _thr_stack_default SCLASS_PRESET(THR_STACK_DEFAULT);
648 SCLASS int _thr_stack_initial SCLASS_PRESET(THR_STACK_INITIAL);
649 SCLASS int _thr_page_size;
650 /* Garbage thread count. */
651 SCLASS int _gc_count SCLASS_PRESET(0);
653 SCLASS umtx_t _mutex_static_lock;
654 SCLASS umtx_t _cond_static_lock;
655 SCLASS umtx_t _rwlock_static_lock;
656 SCLASS umtx_t _keytable_lock;
657 SCLASS umtx_t _thr_list_lock;
659 /* Undefine the storage class and preset specifiers: */
664 * Function prototype definitions.
667 int _thr_setthreaded(int);
668 int _mutex_cv_lock(pthread_mutex_t *);
669 int _mutex_cv_unlock(pthread_mutex_t *);
670 void _mutex_notify_priochange(struct pthread *, struct pthread *, int);
671 int _mutex_reinit(pthread_mutex_t *);
672 void _mutex_fork(struct pthread *curthread);
673 void _mutex_unlock_private(struct pthread *);
674 void _libpthread_init(struct pthread *);
675 void *_pthread_getspecific(pthread_key_t);
676 int _pthread_cond_init(pthread_cond_t *, const pthread_condattr_t *);
677 int _pthread_cond_destroy(pthread_cond_t *);
678 int _pthread_cond_wait(pthread_cond_t *, pthread_mutex_t *);
679 int _pthread_cond_timedwait(pthread_cond_t *, pthread_mutex_t *,
680 const struct timespec *);
681 int _pthread_cond_signal(pthread_cond_t *);
682 int _pthread_cond_broadcast(pthread_cond_t *);
683 int _pthread_key_create(pthread_key_t *, void (*) (void *));
684 int _pthread_key_delete(pthread_key_t);
685 int _pthread_mutex_destroy(pthread_mutex_t *);
686 int _pthread_mutex_init(pthread_mutex_t *, const pthread_mutexattr_t *);
687 int _pthread_mutex_lock(pthread_mutex_t *);
688 int _pthread_mutex_trylock(pthread_mutex_t *);
689 int _pthread_mutex_unlock(pthread_mutex_t *);
690 int _pthread_mutexattr_init(pthread_mutexattr_t *);
691 int _pthread_mutexattr_destroy(pthread_mutexattr_t *);
692 int _pthread_mutexattr_settype(pthread_mutexattr_t *, int);
693 int _pthread_once(pthread_once_t *, void (*) (void));
694 int _pthread_rwlock_init(pthread_rwlock_t *, const pthread_rwlockattr_t *);
695 int _pthread_rwlock_destroy (pthread_rwlock_t *);
696 struct pthread *_pthread_self(void);
697 int _pthread_setspecific(pthread_key_t, const void *);
698 void _pthread_testcancel(void);
699 void _pthread_yield(void);
700 void _pthread_cleanup_push(void (*routine) (void *), void *routine_arg);
701 void _pthread_cleanup_pop(int execute);
702 struct pthread *_thr_alloc(struct pthread *);
703 void _thread_exit(char *, int, char *) __dead2;
704 void _thr_exit_cleanup(void);
705 int _thr_ref_add(struct pthread *, struct pthread *, int);
706 void _thr_ref_delete(struct pthread *, struct pthread *);
707 int _thr_find_thread(struct pthread *, struct pthread *, int);
708 void _thr_rtld_init(void);
709 void _thr_rtld_fini(void);
710 int _thr_stack_alloc(struct pthread_attr *);
711 void _thr_stack_free(struct pthread_attr *);
712 void _thr_free(struct pthread *, struct pthread *);
713 void _thr_gc(struct pthread *);
714 void _thread_cleanupspecific(void);
715 void _thread_dump_info(void);
716 void _thread_printf(int, const char *, ...);
717 void _thr_spinlock_init(void);
718 int _thr_cancel_enter(struct pthread *);
719 void _thr_cancel_leave(struct pthread *, int);
720 void _thr_signal_block(struct pthread *);
721 void _thr_signal_unblock(struct pthread *);
722 void _thr_signal_init(void);
723 void _thr_signal_deinit(void);
724 int _thr_send_sig(struct pthread *, int sig);
725 void _thr_list_init();
726 void _thr_hash_add(struct pthread *);
727 void _thr_hash_remove(struct pthread *);
728 struct pthread *_thr_hash_find(struct pthread *);
729 void _thr_link(struct pthread *curthread, struct pthread *thread);
730 void _thr_unlink(struct pthread *curthread, struct pthread *thread);
731 void _thr_suspend_check(struct pthread *curthread);
732 void _thr_assert_lock_level() __dead2;
733 int _thr_get_tid(void);
736 * Aliases for _pthread functions. Should be called instead of
737 * originals if PLT replocation is unwanted at runtme.
739 int _thr_cond_broadcast(pthread_cond_t *);
740 int _thr_cond_signal(pthread_cond_t *);
741 int _thr_cond_wait(pthread_cond_t *, pthread_mutex_t *);
742 int _thr_mutex_lock(pthread_mutex_t *);
743 int _thr_mutex_unlock(pthread_mutex_t *);
744 int _thr_rwlock_rdlock(pthread_rwlock_t *);
745 int _thr_rwlock_wrlock(pthread_rwlock_t *);
746 int _thr_rwlock_unlock(pthread_rwlock_t *);
748 /* #include <sys/aio.h> */
750 int __sys_aio_suspend(const struct aiocb * const[], int, const struct timespec *);
753 /* #include <fcntl.h> */
755 int __sys_fcntl(int, int, ...);
756 int __sys_open(const char *, int, ...);
759 /* #include <sys/ioctl.h> */
761 int __sys_ioctl(int, unsigned long, ...);
764 /* #inclde <sched.h> */
766 int __sys_sched_yield(void);
769 /* #include <signal.h> */
771 int __sys_kill(pid_t, int);
772 int __sys_sigaction(int, const struct sigaction *, struct sigaction *);
773 int __sys_sigpending(sigset_t *);
774 int __sys_sigprocmask(int, const sigset_t *, sigset_t *);
775 int __sys_sigsuspend(const sigset_t *);
776 int __sys_sigreturn(ucontext_t *);
777 int __sys_sigaltstack(const struct sigaltstack *, struct sigaltstack *);
780 /* #include <sys/socket.h> */
781 #ifdef _SYS_SOCKET_H_
782 int __sys_accept(int, struct sockaddr *, socklen_t *);
783 int __sys_connect(int, const struct sockaddr *, socklen_t);
784 ssize_t __sys_recv(int, void *, size_t, int);
785 ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *);
786 ssize_t __sys_recvmsg(int, struct msghdr *, int);
787 int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *,
789 ssize_t __sys_sendmsg(int, const struct msghdr *, int);
790 ssize_t __sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t);
793 /* #include <sys/uio.h> */
795 ssize_t __sys_readv(int, const struct iovec *, int);
796 ssize_t __sys_writev(int, const struct iovec *, int);
799 /* #include <time.h> */
801 int __sys_nanosleep(const struct timespec *, struct timespec *);
804 /* #include <unistd.h> */
806 int __sys_close(int);
807 int __sys_execve(const char *, char * const *, char * const *);
808 int __sys_fork(void);
809 int __sys_fsync(int);
810 pid_t __sys_getpid(void);
811 int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
812 ssize_t __sys_read(int, void *, size_t);
813 ssize_t __sys_write(int, const void *, size_t);
814 void __sys_exit(int);
815 int __sys_sigwait(const sigset_t *, int *);
816 int __sys_sigtimedwait(const sigset_t *, siginfo_t *,
817 const struct timespec *);
818 int __sys_sigwaitinfo(const sigset_t *set, siginfo_t *info);
821 /* #include <poll.h> */
823 int __sys_poll(struct pollfd *, unsigned, int);
826 /* #include <sys/mman.h> */
828 int __sys_msync(void *, size_t, int);
832 _thr_isthreaded(void)
834 return (__isthreaded != 0);
840 return (_thr_initial != 0);
844 _thr_check_init(void)
846 if (_thr_initial == 0)
852 #endif /* !_THR_PRIVATE_H */