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1/* Copyright (C) 2002-2018 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#ifndef _PTHREAD_H
19#define _PTHREAD_H 1
20
21#include <features.h>
22#include <endian.h>
23#include <sched.h>
24#include <time.h>
25
26#include <bits/pthreadtypes.h>
27#include <bits/setjmp.h>
28#include <bits/wordsize.h>
29#include <bits/types/struct_timespec.h>
30
31
32/* Detach state. */
33enum
34{
35 PTHREAD_CREATE_JOINABLE,
36#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE
37 PTHREAD_CREATE_DETACHED
38#define PTHREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED
39};
40
41
42/* Mutex types. */
43enum
44{
45 PTHREAD_MUTEX_TIMED_NP,
46 PTHREAD_MUTEX_RECURSIVE_NP,
47 PTHREAD_MUTEX_ERRORCHECK_NP,
48 PTHREAD_MUTEX_ADAPTIVE_NP
49#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
50 ,
51 PTHREAD_MUTEX_NORMAL = PTHREAD_MUTEX_TIMED_NP,
52 PTHREAD_MUTEX_RECURSIVE = PTHREAD_MUTEX_RECURSIVE_NP,
53 PTHREAD_MUTEX_ERRORCHECK = PTHREAD_MUTEX_ERRORCHECK_NP,
54 PTHREAD_MUTEX_DEFAULT = PTHREAD_MUTEX_NORMAL
55#endif
56#ifdef __USE_GNU
57 /* For compatibility. */
58 , PTHREAD_MUTEX_FAST_NP = PTHREAD_MUTEX_TIMED_NP
59#endif
60};
61
62
63#ifdef __USE_XOPEN2K
64/* Robust mutex or not flags. */
65enum
66{
67 PTHREAD_MUTEX_STALLED,
68 PTHREAD_MUTEX_STALLED_NP = PTHREAD_MUTEX_STALLED,
69 PTHREAD_MUTEX_ROBUST,
70 PTHREAD_MUTEX_ROBUST_NP = PTHREAD_MUTEX_ROBUST
71};
72#endif
73
74
75#if defined __USE_POSIX199506 || defined __USE_UNIX98
76/* Mutex protocols. */
77enum
78{
79 PTHREAD_PRIO_NONE,
80 PTHREAD_PRIO_INHERIT,
81 PTHREAD_PRIO_PROTECT
82};
83#endif
84
85
86#if __PTHREAD_MUTEX_HAVE_PREV
87# define PTHREAD_MUTEX_INITIALIZER \
88 { { 0, 0, 0, 0, 0, __PTHREAD_SPINS, { 0, 0 } } }
89# ifdef __USE_GNU
90# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
91 { { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
92# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
93 { { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __PTHREAD_SPINS, { 0, 0 } } }
94# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
95 { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } }
96
97# endif
98#else
99# define PTHREAD_MUTEX_INITIALIZER \
100 { { 0, 0, 0, 0, 0, { __PTHREAD_SPINS } } }
101# ifdef __USE_GNU
102# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
103 { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { __PTHREAD_SPINS } } }
104# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
105 { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { __PTHREAD_SPINS } } }
106# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \
107 { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { __PTHREAD_SPINS } } }
108
109# endif
110#endif
111
112
113/* Read-write lock types. */
114#if defined __USE_UNIX98 || defined __USE_XOPEN2K
115enum
116{
117 PTHREAD_RWLOCK_PREFER_READER_NP,
118 PTHREAD_RWLOCK_PREFER_WRITER_NP,
119 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,
120 PTHREAD_RWLOCK_DEFAULT_NP = PTHREAD_RWLOCK_PREFER_READER_NP
121};
122
123/* Define __PTHREAD_RWLOCK_INT_FLAGS_SHARED to 1 if pthread_rwlock_t
124 has the shared field. All 64-bit architectures have the shared field
125 in pthread_rwlock_t. */
126#ifndef __PTHREAD_RWLOCK_INT_FLAGS_SHARED
127# if __WORDSIZE == 64
128# define __PTHREAD_RWLOCK_INT_FLAGS_SHARED 1
129# endif
130#endif
131
132/* Read-write lock initializers. */
133# define PTHREAD_RWLOCK_INITIALIZER \
134 { { 0, 0, 0, 0, 0, 0, 0, 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, 0 } }
135# ifdef __USE_GNU
136# ifdef __PTHREAD_RWLOCK_INT_FLAGS_SHARED
137# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
138 { { 0, 0, 0, 0, 0, 0, 0, 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, \
139 PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP } }
140# else
141# if __BYTE_ORDER == __LITTLE_ENDIAN
142# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
143 { { 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP, \
144 0, __PTHREAD_RWLOCK_ELISION_EXTRA, 0, 0 } }
145# else
146# define PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP \
147 { { 0, 0, 0, 0, 0, 0, 0, 0, 0, PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP,\
148 0 } }
149# endif
150# endif
151# endif
152#endif /* Unix98 or XOpen2K */
153
154
155/* Scheduler inheritance. */
156enum
157{
158 PTHREAD_INHERIT_SCHED,
159#define PTHREAD_INHERIT_SCHED PTHREAD_INHERIT_SCHED
160 PTHREAD_EXPLICIT_SCHED
161#define PTHREAD_EXPLICIT_SCHED PTHREAD_EXPLICIT_SCHED
162};
163
164
165/* Scope handling. */
166enum
167{
168 PTHREAD_SCOPE_SYSTEM,
169#define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_SYSTEM
170 PTHREAD_SCOPE_PROCESS
171#define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_PROCESS
172};
173
174
175/* Process shared or private flag. */
176enum
177{
178 PTHREAD_PROCESS_PRIVATE,
179#define PTHREAD_PROCESS_PRIVATE PTHREAD_PROCESS_PRIVATE
180 PTHREAD_PROCESS_SHARED
181#define PTHREAD_PROCESS_SHARED PTHREAD_PROCESS_SHARED
182};
183
184
185
186/* Conditional variable handling. */
187#define PTHREAD_COND_INITIALIZER { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }
188
189
190/* Cleanup buffers */
191struct _pthread_cleanup_buffer
192{
193 void (*__routine) (void *); /* Function to call. */
194 void *__arg; /* Its argument. */
195 int __canceltype; /* Saved cancellation type. */
196 struct _pthread_cleanup_buffer *__prev; /* Chaining of cleanup functions. */
197};
198
199/* Cancellation */
200enum
201{
202 PTHREAD_CANCEL_ENABLE,
203#define PTHREAD_CANCEL_ENABLE PTHREAD_CANCEL_ENABLE
204 PTHREAD_CANCEL_DISABLE
205#define PTHREAD_CANCEL_DISABLE PTHREAD_CANCEL_DISABLE
206};
207enum
208{
209 PTHREAD_CANCEL_DEFERRED,
210#define PTHREAD_CANCEL_DEFERRED PTHREAD_CANCEL_DEFERRED
211 PTHREAD_CANCEL_ASYNCHRONOUS
212#define PTHREAD_CANCEL_ASYNCHRONOUS PTHREAD_CANCEL_ASYNCHRONOUS
213};
214#define PTHREAD_CANCELED ((void *) -1)
215
216
217/* Single execution handling. */
218#define PTHREAD_ONCE_INIT 0
219
220
221#ifdef __USE_XOPEN2K
222/* Value returned by 'pthread_barrier_wait' for one of the threads after
223 the required number of threads have called this function.
224 -1 is distinct from 0 and all errno constants */
225# define PTHREAD_BARRIER_SERIAL_THREAD -1
226#endif
227
228
229__BEGIN_DECLS
230
231/* Create a new thread, starting with execution of START-ROUTINE
232 getting passed ARG. Creation attributed come from ATTR. The new
233 handle is stored in *NEWTHREAD. */
234extern int pthread_create (pthread_t *__restrict __newthread,
235 const pthread_attr_t *__restrict __attr,
236 void *(*__start_routine) (void *),
237 void *__restrict __arg) __THROWNL __nonnull ((1, 3));
238
239/* Terminate calling thread.
240
241 The registered cleanup handlers are called via exception handling
242 so we cannot mark this function with __THROW.*/
243extern void pthread_exit (void *__retval) __attribute__ ((__noreturn__));
244
245/* Make calling thread wait for termination of the thread TH. The
246 exit status of the thread is stored in *THREAD_RETURN, if THREAD_RETURN
247 is not NULL.
248
249 This function is a cancellation point and therefore not marked with
250 __THROW. */
251extern int pthread_join (pthread_t __th, void **__thread_return);
252
253#ifdef __USE_GNU
254/* Check whether thread TH has terminated. If yes return the status of
255 the thread in *THREAD_RETURN, if THREAD_RETURN is not NULL. */
256extern int pthread_tryjoin_np (pthread_t __th, void **__thread_return) __THROW;
257
258/* Make calling thread wait for termination of the thread TH, but only
259 until TIMEOUT. The exit status of the thread is stored in
260 *THREAD_RETURN, if THREAD_RETURN is not NULL.
261
262 This function is a cancellation point and therefore not marked with
263 __THROW. */
264extern int pthread_timedjoin_np (pthread_t __th, void **__thread_return,
265 const struct timespec *__abstime);
266#endif
267
268/* Indicate that the thread TH is never to be joined with PTHREAD_JOIN.
269 The resources of TH will therefore be freed immediately when it
270 terminates, instead of waiting for another thread to perform PTHREAD_JOIN
271 on it. */
272extern int pthread_detach (pthread_t __th) __THROW;
273
274
275/* Obtain the identifier of the current thread. */
276extern pthread_t pthread_self (void) __THROW __attribute__ ((__const__));
277
278/* Compare two thread identifiers. */
279extern int pthread_equal (pthread_t __thread1, pthread_t __thread2)
280 __THROW __attribute__ ((__const__));
281
282
283/* Thread attribute handling. */
284
285/* Initialize thread attribute *ATTR with default attributes
286 (detachstate is PTHREAD_JOINABLE, scheduling policy is SCHED_OTHER,
287 no user-provided stack). */
288extern int pthread_attr_init (pthread_attr_t *__attr) __THROW __nonnull ((1));
289
290/* Destroy thread attribute *ATTR. */
291extern int pthread_attr_destroy (pthread_attr_t *__attr)
292 __THROW __nonnull ((1));
293
294/* Get detach state attribute. */
295extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr,
296 int *__detachstate)
297 __THROW __nonnull ((1, 2));
298
299/* Set detach state attribute. */
300extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
301 int __detachstate)
302 __THROW __nonnull ((1));
303
304
305/* Get the size of the guard area created for stack overflow protection. */
306extern int pthread_attr_getguardsize (const pthread_attr_t *__attr,
307 size_t *__guardsize)
308 __THROW __nonnull ((1, 2));
309
310/* Set the size of the guard area created for stack overflow protection. */
311extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
312 size_t __guardsize)
313 __THROW __nonnull ((1));
314
315
316/* Return in *PARAM the scheduling parameters of *ATTR. */
317extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr,
318 struct sched_param *__restrict __param)
319 __THROW __nonnull ((1, 2));
320
321/* Set scheduling parameters (priority, etc) in *ATTR according to PARAM. */
322extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr,
323 const struct sched_param *__restrict
324 __param) __THROW __nonnull ((1, 2));
325
326/* Return in *POLICY the scheduling policy of *ATTR. */
327extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict
328 __attr, int *__restrict __policy)
329 __THROW __nonnull ((1, 2));
330
331/* Set scheduling policy in *ATTR according to POLICY. */
332extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr, int __policy)
333 __THROW __nonnull ((1));
334
335/* Return in *INHERIT the scheduling inheritance mode of *ATTR. */
336extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict
337 __attr, int *__restrict __inherit)
338 __THROW __nonnull ((1, 2));
339
340/* Set scheduling inheritance mode in *ATTR according to INHERIT. */
341extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
342 int __inherit)
343 __THROW __nonnull ((1));
344
345
346/* Return in *SCOPE the scheduling contention scope of *ATTR. */
347extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr,
348 int *__restrict __scope)
349 __THROW __nonnull ((1, 2));
350
351/* Set scheduling contention scope in *ATTR according to SCOPE. */
352extern int pthread_attr_setscope (pthread_attr_t *__attr, int __scope)
353 __THROW __nonnull ((1));
354
355/* Return the previously set address for the stack. */
356extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict
357 __attr, void **__restrict __stackaddr)
358 __THROW __nonnull ((1, 2)) __attribute_deprecated__;
359
360/* Set the starting address of the stack of the thread to be created.
361 Depending on whether the stack grows up or down the value must either
362 be higher or lower than all the address in the memory block. The
363 minimal size of the block must be PTHREAD_STACK_MIN. */
364extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
365 void *__stackaddr)
366 __THROW __nonnull ((1)) __attribute_deprecated__;
367
368/* Return the currently used minimal stack size. */
369extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict
370 __attr, size_t *__restrict __stacksize)
371 __THROW __nonnull ((1, 2));
372
373/* Add information about the minimum stack size needed for the thread
374 to be started. This size must never be less than PTHREAD_STACK_MIN
375 and must also not exceed the system limits. */
376extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
377 size_t __stacksize)
378 __THROW __nonnull ((1));
379
380#ifdef __USE_XOPEN2K
381/* Return the previously set address for the stack. */
382extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
383 void **__restrict __stackaddr,
384 size_t *__restrict __stacksize)
385 __THROW __nonnull ((1, 2, 3));
386
387/* The following two interfaces are intended to replace the last two. They
388 require setting the address as well as the size since only setting the
389 address will make the implementation on some architectures impossible. */
390extern int pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
391 size_t __stacksize) __THROW __nonnull ((1));
392#endif
393
394#ifdef __USE_GNU
395/* Thread created with attribute ATTR will be limited to run only on
396 the processors represented in CPUSET. */
397extern int pthread_attr_setaffinity_np (pthread_attr_t *__attr,
398 size_t __cpusetsize,
399 const cpu_set_t *__cpuset)
400 __THROW __nonnull ((1, 3));
401
402/* Get bit set in CPUSET representing the processors threads created with
403 ATTR can run on. */
404extern int pthread_attr_getaffinity_np (const pthread_attr_t *__attr,
405 size_t __cpusetsize,
406 cpu_set_t *__cpuset)
407 __THROW __nonnull ((1, 3));
408
409/* Get the default attributes used by pthread_create in this process. */
410extern int pthread_getattr_default_np (pthread_attr_t *__attr)
411 __THROW __nonnull ((1));
412
413/* Set the default attributes to be used by pthread_create in this
414 process. */
415extern int pthread_setattr_default_np (const pthread_attr_t *__attr)
416 __THROW __nonnull ((1));
417
418/* Initialize thread attribute *ATTR with attributes corresponding to the
419 already running thread TH. It shall be called on uninitialized ATTR
420 and destroyed with pthread_attr_destroy when no longer needed. */
421extern int pthread_getattr_np (pthread_t __th, pthread_attr_t *__attr)
422 __THROW __nonnull ((2));
423#endif
424
425
426/* Functions for scheduling control. */
427
428/* Set the scheduling parameters for TARGET_THREAD according to POLICY
429 and *PARAM. */
430extern int pthread_setschedparam (pthread_t __target_thread, int __policy,
431 const struct sched_param *__param)
432 __THROW __nonnull ((3));
433
434/* Return in *POLICY and *PARAM the scheduling parameters for TARGET_THREAD. */
435extern int pthread_getschedparam (pthread_t __target_thread,
436 int *__restrict __policy,
437 struct sched_param *__restrict __param)
438 __THROW __nonnull ((2, 3));
439
440/* Set the scheduling priority for TARGET_THREAD. */
441extern int pthread_setschedprio (pthread_t __target_thread, int __prio)
442 __THROW;
443
444
445#ifdef __USE_GNU
446/* Get thread name visible in the kernel and its interfaces. */
447extern int pthread_getname_np (pthread_t __target_thread, char *__buf,
448 size_t __buflen)
449 __THROW __nonnull ((2));
450
451/* Set thread name visible in the kernel and its interfaces. */
452extern int pthread_setname_np (pthread_t __target_thread, const char *__name)
453 __THROW __nonnull ((2));
454#endif
455
456
457#ifdef __USE_UNIX98
458/* Determine level of concurrency. */
459extern int pthread_getconcurrency (void) __THROW;
460
461/* Set new concurrency level to LEVEL. */
462extern int pthread_setconcurrency (int __level) __THROW;
463#endif
464
465#ifdef __USE_GNU
466/* Yield the processor to another thread or process.
467 This function is similar to the POSIX `sched_yield' function but
468 might be differently implemented in the case of a m-on-n thread
469 implementation. */
470extern int pthread_yield (void) __THROW;
471
472
473/* Limit specified thread TH to run only on the processors represented
474 in CPUSET. */
475extern int pthread_setaffinity_np (pthread_t __th, size_t __cpusetsize,
476 const cpu_set_t *__cpuset)
477 __THROW __nonnull ((3));
478
479/* Get bit set in CPUSET representing the processors TH can run on. */
480extern int pthread_getaffinity_np (pthread_t __th, size_t __cpusetsize,
481 cpu_set_t *__cpuset)
482 __THROW __nonnull ((3));
483#endif
484
485
486/* Functions for handling initialization. */
487
488/* Guarantee that the initialization function INIT_ROUTINE will be called
489 only once, even if pthread_once is executed several times with the
490 same ONCE_CONTROL argument. ONCE_CONTROL must point to a static or
491 extern variable initialized to PTHREAD_ONCE_INIT.
492
493 The initialization functions might throw exception which is why
494 this function is not marked with __THROW. */
495extern int pthread_once (pthread_once_t *__once_control,
496 void (*__init_routine) (void)) __nonnull ((1, 2));
497
498
499/* Functions for handling cancellation.
500
501 Note that these functions are explicitly not marked to not throw an
502 exception in C++ code. If cancellation is implemented by unwinding
503 this is necessary to have the compiler generate the unwind information. */
504
505/* Set cancelability state of current thread to STATE, returning old
506 state in *OLDSTATE if OLDSTATE is not NULL. */
507extern int pthread_setcancelstate (int __state, int *__oldstate);
508
509/* Set cancellation state of current thread to TYPE, returning the old
510 type in *OLDTYPE if OLDTYPE is not NULL. */
511extern int pthread_setcanceltype (int __type, int *__oldtype);
512
513/* Cancel THREAD immediately or at the next possibility. */
514extern int pthread_cancel (pthread_t __th);
515
516/* Test for pending cancellation for the current thread and terminate
517 the thread as per pthread_exit(PTHREAD_CANCELED) if it has been
518 cancelled. */
519extern void pthread_testcancel (void);
520
521
522/* Cancellation handling with integration into exception handling. */
523
524typedef struct
525{
526 struct
527 {
528 __jmp_buf __cancel_jmp_buf;
529 int __mask_was_saved;
530 } __cancel_jmp_buf[1];
531 void *__pad[4];
532} __pthread_unwind_buf_t __attribute__ ((__aligned__));
533
534/* No special attributes by default. */
535#ifndef __cleanup_fct_attribute
536# define __cleanup_fct_attribute
537#endif
538
539
540/* Structure to hold the cleanup handler information. */
541struct __pthread_cleanup_frame
542{
543 void (*__cancel_routine) (void *);
544 void *__cancel_arg;
545 int __do_it;
546 int __cancel_type;
547};
548
549#if defined __GNUC__ && defined __EXCEPTIONS
550# ifdef __cplusplus
551/* Class to handle cancellation handler invocation. */
552class __pthread_cleanup_class
553{
554 void (*__cancel_routine) (void *);
555 void *__cancel_arg;
556 int __do_it;
557 int __cancel_type;
558
559 public:
560 __pthread_cleanup_class (void (*__fct) (void *), void *__arg)
561 : __cancel_routine (__fct), __cancel_arg (__arg), __do_it (1) { }
562 ~__pthread_cleanup_class () { if (__do_it) __cancel_routine (__cancel_arg); }
563 void __setdoit (int __newval) { __do_it = __newval; }
564 void __defer () { pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED,
565 &__cancel_type); }
566 void __restore () const { pthread_setcanceltype (__cancel_type, 0); }
567};
568
569/* Install a cleanup handler: ROUTINE will be called with arguments ARG
570 when the thread is canceled or calls pthread_exit. ROUTINE will also
571 be called with arguments ARG when the matching pthread_cleanup_pop
572 is executed with non-zero EXECUTE argument.
573
574 pthread_cleanup_push and pthread_cleanup_pop are macros and must always
575 be used in matching pairs at the same nesting level of braces. */
576# define pthread_cleanup_push(routine, arg) \
577 do { \
578 __pthread_cleanup_class __clframe (routine, arg)
579
580/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
581 If EXECUTE is non-zero, the handler function is called. */
582# define pthread_cleanup_pop(execute) \
583 __clframe.__setdoit (execute); \
584 } while (0)
585
586# ifdef __USE_GNU
587/* Install a cleanup handler as pthread_cleanup_push does, but also
588 saves the current cancellation type and sets it to deferred
589 cancellation. */
590# define pthread_cleanup_push_defer_np(routine, arg) \
591 do { \
592 __pthread_cleanup_class __clframe (routine, arg); \
593 __clframe.__defer ()
594
595/* Remove a cleanup handler as pthread_cleanup_pop does, but also
596 restores the cancellation type that was in effect when the matching
597 pthread_cleanup_push_defer was called. */
598# define pthread_cleanup_pop_restore_np(execute) \
599 __clframe.__restore (); \
600 __clframe.__setdoit (execute); \
601 } while (0)
602# endif
603# else
604/* Function called to call the cleanup handler. As an extern inline
605 function the compiler is free to decide inlining the change when
606 needed or fall back on the copy which must exist somewhere
607 else. */
608__extern_inline void
609__pthread_cleanup_routine (struct __pthread_cleanup_frame *__frame)
610{
611 if (__frame->__do_it)
612 __frame->__cancel_routine (__frame->__cancel_arg);
613}
614
615/* Install a cleanup handler: ROUTINE will be called with arguments ARG
616 when the thread is canceled or calls pthread_exit. ROUTINE will also
617 be called with arguments ARG when the matching pthread_cleanup_pop
618 is executed with non-zero EXECUTE argument.
619
620 pthread_cleanup_push and pthread_cleanup_pop are macros and must always
621 be used in matching pairs at the same nesting level of braces. */
622# define pthread_cleanup_push(routine, arg) \
623 do { \
624 struct __pthread_cleanup_frame __clframe \
625 __attribute__ ((__cleanup__ (__pthread_cleanup_routine))) \
626 = { .__cancel_routine = (routine), .__cancel_arg = (arg), \
627 .__do_it = 1 };
628
629/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
630 If EXECUTE is non-zero, the handler function is called. */
631# define pthread_cleanup_pop(execute) \
632 __clframe.__do_it = (execute); \
633 } while (0)
634
635# ifdef __USE_GNU
636/* Install a cleanup handler as pthread_cleanup_push does, but also
637 saves the current cancellation type and sets it to deferred
638 cancellation. */
639# define pthread_cleanup_push_defer_np(routine, arg) \
640 do { \
641 struct __pthread_cleanup_frame __clframe \
642 __attribute__ ((__cleanup__ (__pthread_cleanup_routine))) \
643 = { .__cancel_routine = (routine), .__cancel_arg = (arg), \
644 .__do_it = 1 }; \
645 (void) pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, \
646 &__clframe.__cancel_type)
647
648/* Remove a cleanup handler as pthread_cleanup_pop does, but also
649 restores the cancellation type that was in effect when the matching
650 pthread_cleanup_push_defer was called. */
651# define pthread_cleanup_pop_restore_np(execute) \
652 (void) pthread_setcanceltype (__clframe.__cancel_type, NULL); \
653 __clframe.__do_it = (execute); \
654 } while (0)
655# endif
656# endif
657#else
658/* Install a cleanup handler: ROUTINE will be called with arguments ARG
659 when the thread is canceled or calls pthread_exit. ROUTINE will also
660 be called with arguments ARG when the matching pthread_cleanup_pop
661 is executed with non-zero EXECUTE argument.
662
663 pthread_cleanup_push and pthread_cleanup_pop are macros and must always
664 be used in matching pairs at the same nesting level of braces. */
665# define pthread_cleanup_push(routine, arg) \
666 do { \
667 __pthread_unwind_buf_t __cancel_buf; \
668 void (*__cancel_routine) (void *) = (routine); \
669 void *__cancel_arg = (arg); \
670 int __not_first_call = __sigsetjmp ((struct __jmp_buf_tag *) (void *) \
671 __cancel_buf.__cancel_jmp_buf, 0); \
672 if (__glibc_unlikely (__not_first_call)) \
673 { \
674 __cancel_routine (__cancel_arg); \
675 __pthread_unwind_next (&__cancel_buf); \
676 /* NOTREACHED */ \
677 } \
678 \
679 __pthread_register_cancel (&__cancel_buf); \
680 do {
681extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf)
682 __cleanup_fct_attribute;
683
684/* Remove a cleanup handler installed by the matching pthread_cleanup_push.
685 If EXECUTE is non-zero, the handler function is called. */
686# define pthread_cleanup_pop(execute) \
687 do { } while (0);/* Empty to allow label before pthread_cleanup_pop. */\
688 } while (0); \
689 __pthread_unregister_cancel (&__cancel_buf); \
690 if (execute) \
691 __cancel_routine (__cancel_arg); \
692 } while (0)
693extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf)
694 __cleanup_fct_attribute;
695
696# ifdef __USE_GNU
697/* Install a cleanup handler as pthread_cleanup_push does, but also
698 saves the current cancellation type and sets it to deferred
699 cancellation. */
700# define pthread_cleanup_push_defer_np(routine, arg) \
701 do { \
702 __pthread_unwind_buf_t __cancel_buf; \
703 void (*__cancel_routine) (void *) = (routine); \
704 void *__cancel_arg = (arg); \
705 int __not_first_call = __sigsetjmp ((struct __jmp_buf_tag *) (void *) \
706 __cancel_buf.__cancel_jmp_buf, 0); \
707 if (__glibc_unlikely (__not_first_call)) \
708 { \
709 __cancel_routine (__cancel_arg); \
710 __pthread_unwind_next (&__cancel_buf); \
711 /* NOTREACHED */ \
712 } \
713 \
714 __pthread_register_cancel_defer (&__cancel_buf); \
715 do {
716extern void __pthread_register_cancel_defer (__pthread_unwind_buf_t *__buf)
717 __cleanup_fct_attribute;
718
719/* Remove a cleanup handler as pthread_cleanup_pop does, but also
720 restores the cancellation type that was in effect when the matching
721 pthread_cleanup_push_defer was called. */
722# define pthread_cleanup_pop_restore_np(execute) \
723 do { } while (0);/* Empty to allow label before pthread_cleanup_pop. */\
724 } while (0); \
725 __pthread_unregister_cancel_restore (&__cancel_buf); \
726 if (execute) \
727 __cancel_routine (__cancel_arg); \
728 } while (0)
729extern void __pthread_unregister_cancel_restore (__pthread_unwind_buf_t *__buf)
730 __cleanup_fct_attribute;
731# endif
732
733/* Internal interface to initiate cleanup. */
734extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf)
735 __cleanup_fct_attribute __attribute__ ((__noreturn__))
736# ifndef SHARED
737 __attribute__ ((__weak__))
738# endif
739 ;
740#endif
741
742/* Function used in the macros. */
743struct __jmp_buf_tag;
744extern int __sigsetjmp (struct __jmp_buf_tag *__env, int __savemask) __THROWNL;
745
746
747/* Mutex handling. */
748
749/* Initialize a mutex. */
750extern int pthread_mutex_init (pthread_mutex_t *__mutex,
751 const pthread_mutexattr_t *__mutexattr)
752 __THROW __nonnull ((1));
753
754/* Destroy a mutex. */
755extern int pthread_mutex_destroy (pthread_mutex_t *__mutex)
756 __THROW __nonnull ((1));
757
758/* Try locking a mutex. */
759extern int pthread_mutex_trylock (pthread_mutex_t *__mutex)
760 __THROWNL __nonnull ((1));
761
762/* Lock a mutex. */
763extern int pthread_mutex_lock (pthread_mutex_t *__mutex)
764 __THROWNL __nonnull ((1));
765
766#ifdef __USE_XOPEN2K
767/* Wait until lock becomes available, or specified time passes. */
768extern int pthread_mutex_timedlock (pthread_mutex_t *__restrict __mutex,
769 const struct timespec *__restrict
770 __abstime) __THROWNL __nonnull ((1, 2));
771#endif
772
773/* Unlock a mutex. */
774extern int pthread_mutex_unlock (pthread_mutex_t *__mutex)
775 __THROWNL __nonnull ((1));
776
777
778/* Get the priority ceiling of MUTEX. */
779extern int pthread_mutex_getprioceiling (const pthread_mutex_t *
780 __restrict __mutex,
781 int *__restrict __prioceiling)
782 __THROW __nonnull ((1, 2));
783
784/* Set the priority ceiling of MUTEX to PRIOCEILING, return old
785 priority ceiling value in *OLD_CEILING. */
786extern int pthread_mutex_setprioceiling (pthread_mutex_t *__restrict __mutex,
787 int __prioceiling,
788 int *__restrict __old_ceiling)
789 __THROW __nonnull ((1, 3));
790
791
792#ifdef __USE_XOPEN2K8
793/* Declare the state protected by MUTEX as consistent. */
794extern int pthread_mutex_consistent (pthread_mutex_t *__mutex)
795 __THROW __nonnull ((1));
796# ifdef __USE_GNU
797extern int pthread_mutex_consistent_np (pthread_mutex_t *__mutex)
798 __THROW __nonnull ((1));
799# endif
800#endif
801
802
803/* Functions for handling mutex attributes. */
804
805/* Initialize mutex attribute object ATTR with default attributes
806 (kind is PTHREAD_MUTEX_TIMED_NP). */
807extern int pthread_mutexattr_init (pthread_mutexattr_t *__attr)
808 __THROW __nonnull ((1));
809
810/* Destroy mutex attribute object ATTR. */
811extern int pthread_mutexattr_destroy (pthread_mutexattr_t *__attr)
812 __THROW __nonnull ((1));
813
814/* Get the process-shared flag of the mutex attribute ATTR. */
815extern int pthread_mutexattr_getpshared (const pthread_mutexattr_t *
816 __restrict __attr,
817 int *__restrict __pshared)
818 __THROW __nonnull ((1, 2));
819
820/* Set the process-shared flag of the mutex attribute ATTR. */
821extern int pthread_mutexattr_setpshared (pthread_mutexattr_t *__attr,
822 int __pshared)
823 __THROW __nonnull ((1));
824
825#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
826/* Return in *KIND the mutex kind attribute in *ATTR. */
827extern int pthread_mutexattr_gettype (const pthread_mutexattr_t *__restrict
828 __attr, int *__restrict __kind)
829 __THROW __nonnull ((1, 2));
830
831/* Set the mutex kind attribute in *ATTR to KIND (either PTHREAD_MUTEX_NORMAL,
832 PTHREAD_MUTEX_RECURSIVE, PTHREAD_MUTEX_ERRORCHECK, or
833 PTHREAD_MUTEX_DEFAULT). */
834extern int pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind)
835 __THROW __nonnull ((1));
836#endif
837
838/* Return in *PROTOCOL the mutex protocol attribute in *ATTR. */
839extern int pthread_mutexattr_getprotocol (const pthread_mutexattr_t *
840 __restrict __attr,
841 int *__restrict __protocol)
842 __THROW __nonnull ((1, 2));
843
844/* Set the mutex protocol attribute in *ATTR to PROTOCOL (either
845 PTHREAD_PRIO_NONE, PTHREAD_PRIO_INHERIT, or PTHREAD_PRIO_PROTECT). */
846extern int pthread_mutexattr_setprotocol (pthread_mutexattr_t *__attr,
847 int __protocol)
848 __THROW __nonnull ((1));
849
850/* Return in *PRIOCEILING the mutex prioceiling attribute in *ATTR. */
851extern int pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *
852 __restrict __attr,
853 int *__restrict __prioceiling)
854 __THROW __nonnull ((1, 2));
855
856/* Set the mutex prioceiling attribute in *ATTR to PRIOCEILING. */
857extern int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *__attr,
858 int __prioceiling)
859 __THROW __nonnull ((1));
860
861#ifdef __USE_XOPEN2K
862/* Get the robustness flag of the mutex attribute ATTR. */
863extern int pthread_mutexattr_getrobust (const pthread_mutexattr_t *__attr,
864 int *__robustness)
865 __THROW __nonnull ((1, 2));
866# ifdef __USE_GNU
867extern int pthread_mutexattr_getrobust_np (const pthread_mutexattr_t *__attr,
868 int *__robustness)
869 __THROW __nonnull ((1, 2));
870# endif
871
872/* Set the robustness flag of the mutex attribute ATTR. */
873extern int pthread_mutexattr_setrobust (pthread_mutexattr_t *__attr,
874 int __robustness)
875 __THROW __nonnull ((1));
876# ifdef __USE_GNU
877extern int pthread_mutexattr_setrobust_np (pthread_mutexattr_t *__attr,
878 int __robustness)
879 __THROW __nonnull ((1));
880# endif
881#endif
882
883
884#if defined __USE_UNIX98 || defined __USE_XOPEN2K
885/* Functions for handling read-write locks. */
886
887/* Initialize read-write lock RWLOCK using attributes ATTR, or use
888 the default values if later is NULL. */
889extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
890 const pthread_rwlockattr_t *__restrict
891 __attr) __THROW __nonnull ((1));
892
893/* Destroy read-write lock RWLOCK. */
894extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock)
895 __THROW __nonnull ((1));
896
897/* Acquire read lock for RWLOCK. */
898extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock)
899 __THROWNL __nonnull ((1));
900
901/* Try to acquire read lock for RWLOCK. */
902extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock)
903 __THROWNL __nonnull ((1));
904
905# ifdef __USE_XOPEN2K
906/* Try to acquire read lock for RWLOCK or return after specfied time. */
907extern int pthread_rwlock_timedrdlock (pthread_rwlock_t *__restrict __rwlock,
908 const struct timespec *__restrict
909 __abstime) __THROWNL __nonnull ((1, 2));
910# endif
911
912/* Acquire write lock for RWLOCK. */
913extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock)
914 __THROWNL __nonnull ((1));
915
916/* Try to acquire write lock for RWLOCK. */
917extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock)
918 __THROWNL __nonnull ((1));
919
920# ifdef __USE_XOPEN2K
921/* Try to acquire write lock for RWLOCK or return after specfied time. */
922extern int pthread_rwlock_timedwrlock (pthread_rwlock_t *__restrict __rwlock,
923 const struct timespec *__restrict
924 __abstime) __THROWNL __nonnull ((1, 2));
925# endif
926
927/* Unlock RWLOCK. */
928extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock)
929 __THROWNL __nonnull ((1));
930
931
932/* Functions for handling read-write lock attributes. */
933
934/* Initialize attribute object ATTR with default values. */
935extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr)
936 __THROW __nonnull ((1));
937
938/* Destroy attribute object ATTR. */
939extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr)
940 __THROW __nonnull ((1));
941
942/* Return current setting of process-shared attribute of ATTR in PSHARED. */
943extern int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *
944 __restrict __attr,
945 int *__restrict __pshared)
946 __THROW __nonnull ((1, 2));
947
948/* Set process-shared attribute of ATTR to PSHARED. */
949extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr,
950 int __pshared)
951 __THROW __nonnull ((1));
952
953/* Return current setting of reader/writer preference. */
954extern int pthread_rwlockattr_getkind_np (const pthread_rwlockattr_t *
955 __restrict __attr,
956 int *__restrict __pref)
957 __THROW __nonnull ((1, 2));
958
959/* Set reader/write preference. */
960extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr,
961 int __pref) __THROW __nonnull ((1));
962#endif
963
964
965/* Functions for handling conditional variables. */
966
967/* Initialize condition variable COND using attributes ATTR, or use
968 the default values if later is NULL. */
969extern int pthread_cond_init (pthread_cond_t *__restrict __cond,
970 const pthread_condattr_t *__restrict __cond_attr)
971 __THROW __nonnull ((1));
972
973/* Destroy condition variable COND. */
974extern int pthread_cond_destroy (pthread_cond_t *__cond)
975 __THROW __nonnull ((1));
976
977/* Wake up one thread waiting for condition variable COND. */
978extern int pthread_cond_signal (pthread_cond_t *__cond)
979 __THROWNL __nonnull ((1));
980
981/* Wake up all threads waiting for condition variables COND. */
982extern int pthread_cond_broadcast (pthread_cond_t *__cond)
983 __THROWNL __nonnull ((1));
984
985/* Wait for condition variable COND to be signaled or broadcast.
986 MUTEX is assumed to be locked before.
987
988 This function is a cancellation point and therefore not marked with
989 __THROW. */
990extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
991 pthread_mutex_t *__restrict __mutex)
992 __nonnull ((1, 2));
993
994/* Wait for condition variable COND to be signaled or broadcast until
995 ABSTIME. MUTEX is assumed to be locked before. ABSTIME is an
996 absolute time specification; zero is the beginning of the epoch
997 (00:00:00 GMT, January 1, 1970).
998
999 This function is a cancellation point and therefore not marked with
1000 __THROW. */
1001extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
1002 pthread_mutex_t *__restrict __mutex,
1003 const struct timespec *__restrict __abstime)
1004 __nonnull ((1, 2, 3));
1005
1006/* Functions for handling condition variable attributes. */
1007
1008/* Initialize condition variable attribute ATTR. */
1009extern int pthread_condattr_init (pthread_condattr_t *__attr)
1010 __THROW __nonnull ((1));
1011
1012/* Destroy condition variable attribute ATTR. */
1013extern int pthread_condattr_destroy (pthread_condattr_t *__attr)
1014 __THROW __nonnull ((1));
1015
1016/* Get the process-shared flag of the condition variable attribute ATTR. */
1017extern int pthread_condattr_getpshared (const pthread_condattr_t *
1018 __restrict __attr,
1019 int *__restrict __pshared)
1020 __THROW __nonnull ((1, 2));
1021
1022/* Set the process-shared flag of the condition variable attribute ATTR. */
1023extern int pthread_condattr_setpshared (pthread_condattr_t *__attr,
1024 int __pshared) __THROW __nonnull ((1));
1025
1026#ifdef __USE_XOPEN2K
1027/* Get the clock selected for the condition variable attribute ATTR. */
1028extern int pthread_condattr_getclock (const pthread_condattr_t *
1029 __restrict __attr,
1030 __clockid_t *__restrict __clock_id)
1031 __THROW __nonnull ((1, 2));
1032
1033/* Set the clock selected for the condition variable attribute ATTR. */
1034extern int pthread_condattr_setclock (pthread_condattr_t *__attr,
1035 __clockid_t __clock_id)
1036 __THROW __nonnull ((1));
1037#endif
1038
1039
1040#ifdef __USE_XOPEN2K
1041/* Functions to handle spinlocks. */
1042
1043/* Initialize the spinlock LOCK. If PSHARED is nonzero the spinlock can
1044 be shared between different processes. */
1045extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
1046 __THROW __nonnull ((1));
1047
1048/* Destroy the spinlock LOCK. */
1049extern int pthread_spin_destroy (pthread_spinlock_t *__lock)
1050 __THROW __nonnull ((1));
1051
1052/* Wait until spinlock LOCK is retrieved. */
1053extern int pthread_spin_lock (pthread_spinlock_t *__lock)
1054 __THROWNL __nonnull ((1));
1055
1056/* Try to lock spinlock LOCK. */
1057extern int pthread_spin_trylock (pthread_spinlock_t *__lock)
1058 __THROWNL __nonnull ((1));
1059
1060/* Release spinlock LOCK. */
1061extern int pthread_spin_unlock (pthread_spinlock_t *__lock)
1062 __THROWNL __nonnull ((1));
1063
1064
1065/* Functions to handle barriers. */
1066
1067/* Initialize BARRIER with the attributes in ATTR. The barrier is
1068 opened when COUNT waiters arrived. */
1069extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier,
1070 const pthread_barrierattr_t *__restrict
1071 __attr, unsigned int __count)
1072 __THROW __nonnull ((1));
1073
1074/* Destroy a previously dynamically initialized barrier BARRIER. */
1075extern int pthread_barrier_destroy (pthread_barrier_t *__barrier)
1076 __THROW __nonnull ((1));
1077
1078/* Wait on barrier BARRIER. */
1079extern int pthread_barrier_wait (pthread_barrier_t *__barrier)
1080 __THROWNL __nonnull ((1));
1081
1082
1083/* Initialize barrier attribute ATTR. */
1084extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr)
1085 __THROW __nonnull ((1));
1086
1087/* Destroy previously dynamically initialized barrier attribute ATTR. */
1088extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr)
1089 __THROW __nonnull ((1));
1090
1091/* Get the process-shared flag of the barrier attribute ATTR. */
1092extern int pthread_barrierattr_getpshared (const pthread_barrierattr_t *
1093 __restrict __attr,
1094 int *__restrict __pshared)
1095 __THROW __nonnull ((1, 2));
1096
1097/* Set the process-shared flag of the barrier attribute ATTR. */
1098extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
1099 int __pshared)
1100 __THROW __nonnull ((1));
1101#endif
1102
1103
1104/* Functions for handling thread-specific data. */
1105
1106/* Create a key value identifying a location in the thread-specific
1107 data area. Each thread maintains a distinct thread-specific data
1108 area. DESTR_FUNCTION, if non-NULL, is called with the value
1109 associated to that key when the key is destroyed.
1110 DESTR_FUNCTION is not called if the value associated is NULL when
1111 the key is destroyed. */
1112extern int pthread_key_create (pthread_key_t *__key,
1113 void (*__destr_function) (void *))
1114 __THROW __nonnull ((1));
1115
1116/* Destroy KEY. */
1117extern int pthread_key_delete (pthread_key_t __key) __THROW;
1118
1119/* Return current value of the thread-specific data slot identified by KEY. */
1120extern void *pthread_getspecific (pthread_key_t __key) __THROW;
1121
1122/* Store POINTER in the thread-specific data slot identified by KEY. */
1123extern int pthread_setspecific (pthread_key_t __key,
1124 const void *__pointer) __THROW ;
1125
1126
1127#ifdef __USE_XOPEN2K
1128/* Get ID of CPU-time clock for thread THREAD_ID. */
1129extern int pthread_getcpuclockid (pthread_t __thread_id,
1130 __clockid_t *__clock_id)
1131 __THROW __nonnull ((2));
1132#endif
1133
1134
1135/* Install handlers to be called when a new process is created with FORK.
1136 The PREPARE handler is called in the parent process just before performing
1137 FORK. The PARENT handler is called in the parent process just after FORK.
1138 The CHILD handler is called in the child process. Each of the three
1139 handlers can be NULL, meaning that no handler needs to be called at that
1140 point.
1141 PTHREAD_ATFORK can be called several times, in which case the PREPARE
1142 handlers are called in LIFO order (last added with PTHREAD_ATFORK,
1143 first called before FORK), and the PARENT and CHILD handlers are called
1144 in FIFO (first added, first called). */
1145
1146extern int pthread_atfork (void (*__prepare) (void),
1147 void (*__parent) (void),
1148 void (*__child) (void)) __THROW;
1149
1150
1151#ifdef __USE_EXTERN_INLINES
1152/* Optimizations. */
1153__extern_inline int
1154__NTH (pthread_equal (pthread_t __thread1, pthread_t __thread2))
1155{
1156 return __thread1 == __thread2;
1157}
1158#endif
1159
1160__END_DECLS
1161
1162#endif /* pthread.h */
1163

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