1 /* Copyright (C) 2002-2007, 2009 Free Software Foundation, Inc.
2 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
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/>. */
24 #include <sys/syscall.h>
27 #include <lowlevellock.h>
28 #include <bits/stackinfo.h>
29 #include <internaltypes.h>
31 #include <bits/kernel-features.h>
33 #include <internal-signals.h>
36 /* Atomic operations on TLS memory. */
37 #ifndef THREAD_ATOMIC_CMPXCHG_VAL
38 # define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, new, old) \
39 atomic_compare_and_exchange_val_acq (&(descr)->member, new, old)
42 #ifndef THREAD_ATOMIC_BIT_SET
43 # define THREAD_ATOMIC_BIT_SET(descr, member, bit) \
44 atomic_bit_set (&(descr)->member, bit)
48 /* Adaptive mutex definitions. */
49 #ifndef MAX_ADAPTIVE_COUNT
50 # define MAX_ADAPTIVE_COUNT 100
54 /* Magic cookie representing robust mutex with dead owner. */
55 #define PTHREAD_MUTEX_INCONSISTENT INT_MAX
56 /* Magic cookie representing not recoverable robust mutex. */
57 #define PTHREAD_MUTEX_NOTRECOVERABLE (INT_MAX - 1)
60 /* Internal mutex type value. */
63 PTHREAD_MUTEX_KIND_MASK_NP
= 3,
64 PTHREAD_MUTEX_ROBUST_NORMAL_NP
= 16,
65 PTHREAD_MUTEX_ROBUST_RECURSIVE_NP
66 = PTHREAD_MUTEX_ROBUST_NORMAL_NP
| PTHREAD_MUTEX_RECURSIVE_NP
,
67 PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP
68 = PTHREAD_MUTEX_ROBUST_NORMAL_NP
| PTHREAD_MUTEX_ERRORCHECK_NP
,
69 PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP
70 = PTHREAD_MUTEX_ROBUST_NORMAL_NP
| PTHREAD_MUTEX_ADAPTIVE_NP
,
71 PTHREAD_MUTEX_PRIO_INHERIT_NP
= 32,
72 PTHREAD_MUTEX_PI_NORMAL_NP
73 = PTHREAD_MUTEX_PRIO_INHERIT_NP
| PTHREAD_MUTEX_NORMAL
,
74 PTHREAD_MUTEX_PI_RECURSIVE_NP
75 = PTHREAD_MUTEX_PRIO_INHERIT_NP
| PTHREAD_MUTEX_RECURSIVE_NP
,
76 PTHREAD_MUTEX_PI_ERRORCHECK_NP
77 = PTHREAD_MUTEX_PRIO_INHERIT_NP
| PTHREAD_MUTEX_ERRORCHECK_NP
,
78 PTHREAD_MUTEX_PI_ADAPTIVE_NP
79 = PTHREAD_MUTEX_PRIO_INHERIT_NP
| PTHREAD_MUTEX_ADAPTIVE_NP
,
80 PTHREAD_MUTEX_PI_ROBUST_NORMAL_NP
81 = PTHREAD_MUTEX_PRIO_INHERIT_NP
| PTHREAD_MUTEX_ROBUST_NORMAL_NP
,
82 PTHREAD_MUTEX_PI_ROBUST_RECURSIVE_NP
83 = PTHREAD_MUTEX_PRIO_INHERIT_NP
| PTHREAD_MUTEX_ROBUST_RECURSIVE_NP
,
84 PTHREAD_MUTEX_PI_ROBUST_ERRORCHECK_NP
85 = PTHREAD_MUTEX_PRIO_INHERIT_NP
| PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP
,
86 PTHREAD_MUTEX_PI_ROBUST_ADAPTIVE_NP
87 = PTHREAD_MUTEX_PRIO_INHERIT_NP
| PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP
,
88 PTHREAD_MUTEX_PRIO_PROTECT_NP
= 64,
89 PTHREAD_MUTEX_PP_NORMAL_NP
90 = PTHREAD_MUTEX_PRIO_PROTECT_NP
| PTHREAD_MUTEX_NORMAL
,
91 PTHREAD_MUTEX_PP_RECURSIVE_NP
92 = PTHREAD_MUTEX_PRIO_PROTECT_NP
| PTHREAD_MUTEX_RECURSIVE_NP
,
93 PTHREAD_MUTEX_PP_ERRORCHECK_NP
94 = PTHREAD_MUTEX_PRIO_PROTECT_NP
| PTHREAD_MUTEX_ERRORCHECK_NP
,
95 PTHREAD_MUTEX_PP_ADAPTIVE_NP
96 = PTHREAD_MUTEX_PRIO_PROTECT_NP
| PTHREAD_MUTEX_ADAPTIVE_NP
98 #define PTHREAD_MUTEX_PSHARED_BIT 128
100 #define PTHREAD_MUTEX_TYPE(m) \
101 ((m)->__data.__kind & 127)
103 #if LLL_PRIVATE == 0 && LLL_SHARED == 128
104 # define PTHREAD_MUTEX_PSHARED(m) \
105 ((m)->__data.__kind & 128)
107 # define PTHREAD_MUTEX_PSHARED(m) \
108 (((m)->__data.__kind & 128) ? LLL_SHARED : LLL_PRIVATE)
111 /* The kernel when waking robust mutexes on exit never uses
112 FUTEX_PRIVATE_FLAG FUTEX_WAKE. */
113 #define PTHREAD_ROBUST_MUTEX_PSHARED(m) LLL_SHARED
115 /* Ceiling in __data.__lock. __data.__lock is signed, so don't
116 use the MSB bit in there, but in the mask also include that bit,
117 so that the compiler can optimize & PTHREAD_MUTEX_PRIO_CEILING_MASK
118 masking if the value is then shifted down by
119 PTHREAD_MUTEX_PRIO_CEILING_SHIFT. */
120 #define PTHREAD_MUTEX_PRIO_CEILING_SHIFT 19
121 #define PTHREAD_MUTEX_PRIO_CEILING_MASK 0xfff80000
124 /* Flags in mutex attr. */
125 #define PTHREAD_MUTEXATTR_PROTOCOL_SHIFT 28
126 #define PTHREAD_MUTEXATTR_PROTOCOL_MASK 0x30000000
127 #define PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT 12
128 #define PTHREAD_MUTEXATTR_PRIO_CEILING_MASK 0x00fff000
129 #define PTHREAD_MUTEXATTR_FLAG_ROBUST 0x40000000
130 #define PTHREAD_MUTEXATTR_FLAG_PSHARED 0x80000000
131 #define PTHREAD_MUTEXATTR_FLAG_BITS \
132 (PTHREAD_MUTEXATTR_FLAG_ROBUST | PTHREAD_MUTEXATTR_FLAG_PSHARED \
133 | PTHREAD_MUTEXATTR_PROTOCOL_MASK | PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
136 /* Check whether rwlock prefers readers. */
137 #define PTHREAD_RWLOCK_PREFER_READER_P(rwlock) \
138 ((rwlock)->__data.__flags == 0)
141 /* Bits used in robust mutex implementation. */
142 #define FUTEX_WAITERS 0x80000000
143 #define FUTEX_OWNER_DIED 0x40000000
144 #define FUTEX_TID_MASK 0x3fffffff
147 /* Internal variables. */
150 /* Default stack size. */
151 extern size_t __default_stacksize attribute_hidden
;
153 /* Size and alignment of static TLS block. */
154 extern size_t __static_tls_size attribute_hidden
;
155 extern size_t __static_tls_align_m1 attribute_hidden
;
157 /* Flag whether the machine is SMP or not. */
158 extern int __is_smp attribute_hidden
;
160 /* Thread descriptor handling. */
161 extern list_t __stack_user
;
162 hidden_proto (__stack_user
)
164 /* Attribute handling. */
165 extern struct pthread_attr
*__attr_list attribute_hidden
;
166 extern int __attr_list_lock attribute_hidden
;
168 /* First available RT signal. */
169 extern int __current_sigrtmin attribute_hidden
;
170 /* Last available RT signal. */
171 extern int __current_sigrtmax attribute_hidden
;
173 /* Concurrency handling. */
174 extern int __concurrency_level attribute_hidden
;
176 /* Thread-local data key handling. */
177 extern struct pthread_key_struct __pthread_keys
[PTHREAD_KEYS_MAX
];
178 hidden_proto (__pthread_keys
)
180 /* Number of threads running. */
181 extern unsigned int __nptl_nthreads
189 #ifndef __ASSUME_SET_ROBUST_LIST
190 /* Negative if we do not have the system call and we can use it. */
191 extern int __set_robust_list_avail attribute_hidden
;
194 /* Thread Priority Protection. */
195 extern int __sched_fifo_min_prio attribute_hidden
;
196 extern int __sched_fifo_max_prio attribute_hidden
;
197 extern void __init_sched_fifo_prio (void) attribute_hidden
;
198 extern int __pthread_tpp_change_priority (int prev_prio
, int new_prio
)
200 extern int __pthread_current_priority (void) attribute_hidden
;
202 /* The library can run in debugging mode where it performs a lot more
204 extern int __pthread_debug attribute_hidden
;
205 /** For now disable debugging support. */
207 # define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
208 # define INVALID_TD_P(pd) (DEBUGGING_P && __find_in_stack_list (pd) == NULL)
209 # define INVALID_NOT_TERMINATED_TD_P(pd) INVALID_TD_P (pd)
211 # define DEBUGGING_P 0
212 /* Simplified test. This will not catch all invalid descriptors but
213 is better than nothing. And if the test triggers the thread
214 descriptor is guaranteed to be invalid. */
215 # define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0)
216 # define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0)
220 /* Cancellation test. */
221 #define CANCELLATION_P(self) \
223 cancelhandling = THREAD_GETMEM (self, cancelhandling); \
224 if (CANCEL_ENABLED_AND_CANCELED (cancelhandling)) \
226 THREAD_SETMEM (self, result, PTHREAD_CANCELED); \
232 extern void __pthread_unwind (__pthread_unwind_buf_t
*__buf
)
233 __cleanup_fct_attribute
__attribute ((__noreturn__
))
234 #if !defined SHARED && !defined IS_IN_libpthread
238 extern void __pthread_unwind_next (__pthread_unwind_buf_t
*__buf
)
239 __cleanup_fct_attribute
__attribute ((__noreturn__
))
244 extern void __pthread_register_cancel (__pthread_unwind_buf_t
*__buf
)
245 __cleanup_fct_attribute
;
246 extern void __pthread_unregister_cancel (__pthread_unwind_buf_t
*__buf
)
247 __cleanup_fct_attribute
;
248 #if defined NOT_IN_libc && defined IS_IN_libpthread
249 hidden_proto (__pthread_unwind
)
250 hidden_proto (__pthread_unwind_next
)
251 hidden_proto (__pthread_register_cancel
)
252 hidden_proto (__pthread_unregister_cancel
)
254 extern void attribute_hidden
pthread_cancel_init (void);
255 extern void __unwind_freeres (void);
260 /* Called when a thread reacts on a cancellation request. */
262 __attribute ((noreturn
, always_inline
))
265 struct pthread
*self
= THREAD_SELF
;
267 /* Make sure we get no more cancellations. */
268 THREAD_ATOMIC_BIT_SET (self
, cancelhandling
, EXITING_BIT
);
270 __pthread_unwind ((__pthread_unwind_buf_t
*)
271 THREAD_GETMEM (self
, cleanup_jmp_buf
));
275 /* Set cancellation mode to asynchronous. */
276 #define CANCEL_ASYNC() \
277 __pthread_enable_asynccancel ()
278 /* Reset to previous cancellation mode. */
279 #define CANCEL_RESET(oldtype) \
280 __pthread_disable_asynccancel (oldtype)
282 #define __LABEL_PREFIX__ __stringify(__USER_LABEL_PREFIX__)
284 #if !defined NOT_IN_libc
285 /* Same as CANCEL_ASYNC, but for use in libc.so. */
286 # define LIBC_CANCEL_ASYNC() \
287 __libc_enable_asynccancel ()
288 /* Same as CANCEL_RESET, but for use in libc.so. */
289 # define LIBC_CANCEL_RESET(oldtype) \
290 __libc_disable_asynccancel (oldtype)
291 # define LIBC_CANCEL_HANDLED() \
292 __asm__ (".globl " __LABEL_PREFIX__ "__libc_enable_asynccancel"); \
293 __asm__ (".globl " __LABEL_PREFIX__ "__libc_disable_asynccancel")
294 #elif defined NOT_IN_libc && defined IS_IN_libpthread
295 # define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
296 # define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
297 # define LIBC_CANCEL_HANDLED() \
298 __asm__ (".globl " __LABEL_PREFIX__ "__pthread_enable_asynccancel"); \
299 __asm__ (".globl " __LABEL_PREFIX__ "__pthread_disable_asynccancel")
300 #elif defined NOT_IN_libc && defined IS_IN_librt
301 # define LIBC_CANCEL_ASYNC() \
302 __librt_enable_asynccancel ()
303 # define LIBC_CANCEL_RESET(val) \
304 __librt_disable_asynccancel (val)
305 # define LIBC_CANCEL_HANDLED() \
306 __asm__ (".globl " __LABEL_PREFIX__ "__librt_enable_asynccancel"); \
307 __asm__ (".globl " __LABEL_PREFIX__ "__librt_disable_asynccancel")
309 # define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */
310 # define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */
311 # define LIBC_CANCEL_HANDLED() /* Nothing. */
314 /* Internal prototypes. */
316 /* Thread list handling. */
317 extern struct pthread
*__find_in_stack_list (struct pthread
*pd
)
318 attribute_hidden internal_function
;
320 /* Deallocate a thread's stack after optionally making sure the thread
321 descriptor is still valid. */
322 extern void __free_tcb (struct pthread
*pd
) attribute_hidden internal_function
;
324 /* Free allocated stack. */
325 extern void __deallocate_stack (struct pthread
*pd
)
326 attribute_hidden internal_function
;
328 /* Mark all the stacks except for the current one as available. This
329 function also re-initializes the lock for the stack cache. */
330 extern void __reclaim_stacks (void) attribute_hidden
;
332 /* Make all threads's stacks executable. */
333 extern int __make_stacks_executable (void **stack_endp
)
334 internal_function attribute_hidden
;
336 /* longjmp handling. */
337 extern void __pthread_cleanup_upto (__jmp_buf target
, char *targetframe
);
338 #if defined NOT_IN_libc && defined IS_IN_libpthread
339 hidden_proto (__pthread_cleanup_upto
)
342 extern int pthread_create (pthread_t
*newthread
,
343 const pthread_attr_t
*attr
,
344 void *(*start_routine
) (void *), void *arg
);
345 extern int pthread_attr_init (pthread_attr_t
*attr
);
348 /* Event handlers for libthread_db interface. */
349 extern void __nptl_create_event (void);
350 extern void __nptl_death_event (void);
351 hidden_proto (__nptl_create_event
)
352 hidden_proto (__nptl_death_event
)
354 /* Register the generation counter in the libpthread with the libc. */
355 #ifdef TLS_MULTIPLE_THREADS_IN_TCB
356 extern void __libc_pthread_init (unsigned long int *ptr
,
357 void (*reclaim
) (void));
359 extern int *__libc_pthread_init (unsigned long int *ptr
,
360 void (*reclaim
) (void));
362 /* Variable set to a nonzero value if more than one thread runs or ran. */
363 extern int __pthread_multiple_threads attribute_hidden
;
364 /* Pointer to the corresponding variable in libc. */
365 extern int *__libc_multiple_threads_ptr attribute_hidden
;
368 /* Find a thread given its TID. */
369 extern struct pthread
*__find_thread_by_id (pid_t tid
) attribute_hidden
374 #define __find_thread_by_id(tid) \
375 (__find_thread_by_id ? (__find_thread_by_id) (tid) : (struct pthread *) NULL)
378 extern void __pthread_init_static_tls (struct link_map
*) attribute_hidden
;
381 /* Namespace save aliases. */
382 extern int __pthread_getschedparam (pthread_t thread_id
, int *policy
,
383 struct sched_param
*param
);
384 extern int __pthread_setschedparam (pthread_t thread_id
, int policy
,
385 const struct sched_param
*param
);
386 extern int __pthread_setcancelstate (int state
, int *oldstate
);
387 extern int __pthread_mutex_init (pthread_mutex_t
*__mutex
,
388 const pthread_mutexattr_t
*__mutexattr
);
389 extern int __pthread_mutex_init_internal (pthread_mutex_t
*__mutex
,
390 const pthread_mutexattr_t
*__mutexattr
)
392 extern int __pthread_mutex_destroy (pthread_mutex_t
*__mutex
);
393 extern int __pthread_mutex_destroy_internal (pthread_mutex_t
*__mutex
)
395 extern int __pthread_mutex_trylock (pthread_mutex_t
*_mutex
);
396 extern int __pthread_mutex_lock (pthread_mutex_t
*__mutex
);
397 extern int __pthread_mutex_lock_internal (pthread_mutex_t
*__mutex
)
399 extern int __pthread_mutex_cond_lock (pthread_mutex_t
*__mutex
)
400 attribute_hidden internal_function
;
401 extern void __pthread_mutex_cond_lock_adjust (pthread_mutex_t
*__mutex
)
402 attribute_hidden internal_function
;
403 extern int __pthread_mutex_unlock (pthread_mutex_t
*__mutex
);
404 extern int __pthread_mutex_unlock_internal (pthread_mutex_t
*__mutex
)
406 extern int __pthread_mutex_unlock_usercnt (pthread_mutex_t
*__mutex
,
408 attribute_hidden internal_function
;
409 extern int __pthread_mutexattr_init (pthread_mutexattr_t
*attr
);
410 extern int __pthread_mutexattr_destroy (pthread_mutexattr_t
*attr
);
411 extern int __pthread_mutexattr_settype (pthread_mutexattr_t
*attr
, int kind
);
412 extern int __pthread_attr_destroy (pthread_attr_t
*attr
);
413 extern int __pthread_attr_getdetachstate (const pthread_attr_t
*attr
,
415 extern int __pthread_attr_setdetachstate (pthread_attr_t
*attr
,
417 extern int __pthread_attr_getinheritsched (const pthread_attr_t
*attr
,
419 extern int __pthread_attr_setinheritsched (pthread_attr_t
*attr
, int inherit
);
420 extern int __pthread_attr_getschedparam (const pthread_attr_t
*attr
,
421 struct sched_param
*param
);
422 extern int __pthread_attr_setschedparam (pthread_attr_t
*attr
,
423 const struct sched_param
*param
);
424 extern int __pthread_attr_getschedpolicy (const pthread_attr_t
*attr
,
426 extern int __pthread_attr_setschedpolicy (pthread_attr_t
*attr
, int policy
);
427 extern int __pthread_attr_getscope (const pthread_attr_t
*attr
, int *scope
);
428 extern int __pthread_attr_setscope (pthread_attr_t
*attr
, int scope
);
429 extern int __pthread_attr_getstackaddr (const pthread_attr_t
*__restrict
430 __attr
, void **__restrict __stackaddr
);
431 extern int __pthread_attr_setstackaddr (pthread_attr_t
*__attr
,
433 extern int __pthread_attr_getstacksize (const pthread_attr_t
*__restrict
435 size_t *__restrict __stacksize
);
436 extern int __pthread_attr_setstacksize (pthread_attr_t
*__attr
,
438 extern int __pthread_attr_getstack (const pthread_attr_t
*__restrict __attr
,
439 void **__restrict __stackaddr
,
440 size_t *__restrict __stacksize
);
441 extern int __pthread_attr_setstack (pthread_attr_t
*__attr
, void *__stackaddr
,
443 extern int __pthread_rwlock_init (pthread_rwlock_t
*__restrict __rwlock
,
444 const pthread_rwlockattr_t
*__restrict
446 extern int __pthread_rwlock_destroy (pthread_rwlock_t
*__rwlock
);
447 extern int __pthread_rwlock_rdlock (pthread_rwlock_t
*__rwlock
);
448 extern int __pthread_rwlock_rdlock_internal (pthread_rwlock_t
*__rwlock
);
449 extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t
*__rwlock
);
450 extern int __pthread_rwlock_wrlock (pthread_rwlock_t
*__rwlock
);
451 extern int __pthread_rwlock_wrlock_internal (pthread_rwlock_t
*__rwlock
);
452 extern int __pthread_rwlock_trywrlock (pthread_rwlock_t
*__rwlock
);
453 extern int __pthread_rwlock_unlock (pthread_rwlock_t
*__rwlock
);
454 extern int __pthread_rwlock_unlock_internal (pthread_rwlock_t
*__rwlock
);
455 extern int __pthread_cond_broadcast (pthread_cond_t
*cond
);
456 extern int __pthread_cond_destroy (pthread_cond_t
*cond
);
457 extern int __pthread_cond_init (pthread_cond_t
*cond
,
458 const pthread_condattr_t
*cond_attr
);
459 extern int __pthread_cond_signal (pthread_cond_t
*cond
);
460 extern int __pthread_cond_wait (pthread_cond_t
*cond
, pthread_mutex_t
*mutex
);
461 extern int __pthread_cond_timedwait (pthread_cond_t
*cond
,
462 pthread_mutex_t
*mutex
,
463 const struct timespec
*abstime
);
464 extern int __pthread_condattr_destroy (pthread_condattr_t
*attr
);
465 extern int __pthread_condattr_init (pthread_condattr_t
*attr
);
466 extern int __pthread_key_create (pthread_key_t
*key
, void (*destr
) (void *));
467 extern int __pthread_key_create_internal (pthread_key_t
*key
,
468 void (*destr
) (void *));
469 extern void *__pthread_getspecific (pthread_key_t key
);
470 extern void *__pthread_getspecific_internal (pthread_key_t key
);
471 extern int __pthread_setspecific (pthread_key_t key
, const void *value
);
472 extern int __pthread_setspecific_internal (pthread_key_t key
,
474 extern int __pthread_once (pthread_once_t
*once_control
,
475 void (*init_routine
) (void));
476 extern int __pthread_once_internal (pthread_once_t
*once_control
,
477 void (*init_routine
) (void));
478 extern int __pthread_atfork (void (*prepare
) (void), void (*parent
) (void),
479 void (*child
) (void));
480 extern pthread_t
__pthread_self (void);
481 extern int __pthread_equal (pthread_t thread1
, pthread_t thread2
);
482 extern int __pthread_kill (pthread_t threadid
, int signo
);
483 extern void __pthread_exit (void *value
);
484 extern int __pthread_setcanceltype (int type
, int *oldtype
);
485 extern int __pthread_enable_asynccancel (void) attribute_hidden
;
486 extern void __pthread_disable_asynccancel (int oldtype
)
487 internal_function attribute_hidden
;
489 extern int __pthread_cond_broadcast_2_0 (pthread_cond_2_0_t
*cond
);
490 extern int __pthread_cond_destroy_2_0 (pthread_cond_2_0_t
*cond
);
491 extern int __pthread_cond_init_2_0 (pthread_cond_2_0_t
*cond
,
492 const pthread_condattr_t
*cond_attr
);
493 extern int __pthread_cond_signal_2_0 (pthread_cond_2_0_t
*cond
);
494 extern int __pthread_cond_timedwait_2_0 (pthread_cond_2_0_t
*cond
,
495 pthread_mutex_t
*mutex
,
496 const struct timespec
*abstime
);
497 extern int __pthread_cond_wait_2_0 (pthread_cond_2_0_t
*cond
,
498 pthread_mutex_t
*mutex
);
500 extern int __pthread_getaffinity_np (pthread_t th
, size_t cpusetsize
,
503 /* The two functions are in libc.so and not exported. */
504 extern int __libc_enable_asynccancel (void) attribute_hidden
;
505 extern void __libc_disable_asynccancel (int oldtype
)
506 internal_function attribute_hidden
;
509 /* The two functions are in librt.so and not exported. */
510 extern int __librt_enable_asynccancel (void) attribute_hidden
;
511 extern void __librt_disable_asynccancel (int oldtype
)
512 internal_function attribute_hidden
;
514 #ifdef IS_IN_libpthread
515 /* Special versions which use non-exported functions. */
516 extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer
*buffer
,
517 void (*routine
) (void *), void *arg
)
519 # undef pthread_cleanup_push
520 # define pthread_cleanup_push(routine,arg) \
521 { struct _pthread_cleanup_buffer _buffer; \
522 __pthread_cleanup_push (&_buffer, (routine), (arg));
524 extern void __pthread_cleanup_pop (struct _pthread_cleanup_buffer
*buffer
,
525 int execute
) attribute_hidden
;
526 # undef pthread_cleanup_pop
527 # define pthread_cleanup_pop(execute) \
528 __pthread_cleanup_pop (&_buffer, (execute)); }
531 extern void __pthread_cleanup_push_defer (struct _pthread_cleanup_buffer
*buffer
,
532 void (*routine
) (void *), void *arg
);
533 extern void __pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer
*buffer
,
536 /* Old cleanup interfaces, still used in libc.so. */
537 extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer
*buffer
,
538 void (*routine
) (void *), void *arg
);
539 extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer
*buffer
,
541 extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer
*buffer
,
542 void (*routine
) (void *), void *arg
);
543 extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer
*buffer
,
546 extern void __nptl_deallocate_tsd (void)
554 extern int __nptl_setxid (struct xid_command
*cmdp
) attribute_hidden
;
556 extern void __free_stacks (size_t limit
) attribute_hidden
;
558 extern void __wait_lookup_done (void) attribute_hidden
;
561 # define PTHREAD_STATIC_FN_REQUIRE(name)
563 # define PTHREAD_STATIC_FN_REQUIRE(name) __asm__ (".globl " #name);
567 #ifndef __NR_set_robust_list
568 /* XXX For the time being... Once we can rely on the kernel headers
569 having the definition remove these lines. */
570 # if defined __i386__
571 # define __NR_set_robust_list 311
572 # elif defined __x86_64__
573 # define __NR_set_robust_list 273
577 #endif /* pthreadP.h */