1 /* Copyright (C) 2002-2007, 2009, 2011 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
25 #include <sys/syscall.h>
28 #include <lowlevellock.h>
29 #include <stackinfo.h>
30 #include <internaltypes.h>
31 #include <pthread-functions.h>
33 #include <kernel-features.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 attribute_hidden;
183 #ifndef __ASSUME_SET_ROBUST_LIST
184 /* Negative if we do not have the system call and we can use it. */
185 extern int __set_robust_list_avail attribute_hidden;
188 /* Thread Priority Protection. */
189 extern int __sched_fifo_min_prio attribute_hidden;
190 extern int __sched_fifo_max_prio attribute_hidden;
191 extern void __init_sched_fifo_prio (void) attribute_hidden;
192 extern int __pthread_tpp_change_priority (int prev_prio, int new_prio)
194 extern int __pthread_current_priority (void) attribute_hidden;
196 /* The library can run in debugging mode where it performs a lot more
198 extern int __pthread_debug attribute_hidden;
199 /** For now disable debugging support. */
201 # define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
202 # define INVALID_TD_P(pd) (DEBUGGING_P && __find_in_stack_list (pd) == NULL)
203 # define INVALID_NOT_TERMINATED_TD_P(pd) INVALID_TD_P (pd)
205 # define DEBUGGING_P 0
206 /* Simplified test. This will not catch all invalid descriptors but
207 is better than nothing. And if the test triggers the thread
208 descriptor is guaranteed to be invalid. */
209 # define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0)
210 # define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0)
214 /* Cancellation test. */
215 #define CANCELLATION_P(self) \
217 int cancelhandling = THREAD_GETMEM (self, cancelhandling); \
218 if (CANCEL_ENABLED_AND_CANCELED (cancelhandling)) \
220 THREAD_SETMEM (self, result, PTHREAD_CANCELED); \
226 extern void __pthread_unwind (__pthread_unwind_buf_t *__buf)
227 __cleanup_fct_attribute __attribute ((__noreturn__))
228 #if !defined SHARED && !defined IS_IN_libpthread
232 extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf)
233 __cleanup_fct_attribute __attribute ((__noreturn__))
238 extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf)
239 __cleanup_fct_attribute;
240 extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf)
241 __cleanup_fct_attribute;
242 #if defined NOT_IN_libc && defined IS_IN_libpthread
243 hidden_proto (__pthread_unwind)
244 hidden_proto (__pthread_unwind_next)
245 hidden_proto (__pthread_register_cancel)
246 hidden_proto (__pthread_unregister_cancel)
248 extern void attribute_hidden pthread_cancel_init (void);
249 extern void __unwind_freeres (void);
254 /* Called when a thread reacts on a cancellation request. */
256 __attribute ((noreturn, always_inline))
259 struct pthread *self = THREAD_SELF;
261 /* Make sure we get no more cancellations. */
262 THREAD_ATOMIC_BIT_SET (self, cancelhandling, EXITING_BIT);
264 __pthread_unwind ((__pthread_unwind_buf_t *)
265 THREAD_GETMEM (self, cleanup_jmp_buf));
269 /* Set cancellation mode to asynchronous. */
270 #define CANCEL_ASYNC() \
271 __pthread_enable_asynccancel ()
272 /* Reset to previous cancellation mode. */
273 #define CANCEL_RESET(oldtype) \
274 __pthread_disable_asynccancel (oldtype)
276 #if !defined NOT_IN_libc
277 /* Same as CANCEL_ASYNC, but for use in libc.so. */
278 # define LIBC_CANCEL_ASYNC() \
279 __libc_enable_asynccancel ()
280 /* Same as CANCEL_RESET, but for use in libc.so. */
281 # define LIBC_CANCEL_RESET(oldtype) \
282 __libc_disable_asynccancel (oldtype)
283 # define LIBC_CANCEL_HANDLED() \
284 __asm (".globl " __SYMBOL_PREFIX "__libc_enable_asynccancel"); \
285 __asm (".globl " __SYMBOL_PREFIX "__libc_disable_asynccancel")
286 #elif defined NOT_IN_libc && defined IS_IN_libpthread
287 # define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
288 # define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
289 # define LIBC_CANCEL_HANDLED() \
290 __asm (".globl " __SYMBOL_PREFIX "__pthread_enable_asynccancel"); \
291 __asm (".globl " __SYMBOL_PREFIX "__pthread_disable_asynccancel")
292 #elif defined NOT_IN_libc && defined IS_IN_librt
293 # define LIBC_CANCEL_ASYNC() \
294 __librt_enable_asynccancel ()
295 # define LIBC_CANCEL_RESET(val) \
296 __librt_disable_asynccancel (val)
297 # define LIBC_CANCEL_HANDLED() \
298 __asm (".globl " __SYMBOL_PREFIX "__librt_enable_asynccancel"); \
299 __asm (".globl " __SYMBOL_PREFIX "__librt_disable_asynccancel")
301 # define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */
302 # define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */
303 # define LIBC_CANCEL_HANDLED() /* Nothing. */
306 /* The signal used for asynchronous cancelation. */
307 #define SIGCANCEL __SIGRTMIN
310 /* Signal needed for the kernel-supported POSIX timer implementation.
311 We can reuse the cancellation signal since we can distinguish
312 cancellation from timer expirations. */
313 #define SIGTIMER SIGCANCEL
316 /* Signal used to implement the setuid et.al. functions. */
317 #define SIGSETXID (__SIGRTMIN + 1)
319 /* Used to communicate with signal handler. */
320 extern struct xid_command *__xidcmd attribute_hidden;
323 /* Internal prototypes. */
325 /* Thread list handling. */
326 extern struct pthread *__find_in_stack_list (struct pthread *pd)
327 attribute_hidden internal_function;
329 /* Deallocate a thread's stack after optionally making sure the thread
330 descriptor is still valid. */
331 extern void __free_tcb (struct pthread *pd) attribute_hidden internal_function;
333 /* Free allocated stack. */
334 extern void __deallocate_stack (struct pthread *pd)
335 attribute_hidden internal_function;
337 /* Mark all the stacks except for the current one as available. This
338 function also re-initializes the lock for the stack cache. */
339 extern void __reclaim_stacks (void) attribute_hidden;
341 /* Make all threads's stacks executable. */
342 extern int __make_stacks_executable (void **stack_endp)
343 internal_function attribute_hidden;
345 /* longjmp handling. */
346 extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);
347 #if defined NOT_IN_libc && defined IS_IN_libpthread
348 hidden_proto (__pthread_cleanup_upto)
352 /* Functions with versioned interfaces. */
353 extern int __pthread_create_2_1 (pthread_t *newthread,
354 const pthread_attr_t *attr,
355 void *(*start_routine) (void *), void *arg);
356 extern int __pthread_create_2_0 (pthread_t *newthread,
357 const pthread_attr_t *attr,
358 void *(*start_routine) (void *), void *arg);
359 extern int __pthread_attr_init_2_1 (pthread_attr_t *attr);
360 extern int __pthread_attr_init_2_0 (pthread_attr_t *attr);
363 /* Event handlers for libthread_db interface. */
364 extern void __nptl_create_event (void);
365 extern void __nptl_death_event (void);
366 hidden_proto (__nptl_create_event)
367 hidden_proto (__nptl_death_event)
369 /* Register the generation counter in the libpthread with the libc. */
370 #ifdef TLS_MULTIPLE_THREADS_IN_TCB
371 extern void __libc_pthread_init (unsigned long int *ptr,
372 void (*reclaim) (void),
373 const struct pthread_functions *functions)
376 extern int *__libc_pthread_init (unsigned long int *ptr,
377 void (*reclaim) (void),
378 const struct pthread_functions *functions)
381 /* Variable set to a nonzero value if more than one thread runs or ran. */
382 extern int __pthread_multiple_threads attribute_hidden;
383 /* Pointer to the corresponding variable in libc. */
384 extern int *__libc_multiple_threads_ptr attribute_hidden;
387 /* Find a thread given its TID. */
388 extern struct pthread *__find_thread_by_id (pid_t tid) attribute_hidden
393 #define __find_thread_by_id(tid) \
394 (__find_thread_by_id ? (__find_thread_by_id) (tid) : (struct pthread *) NULL)
397 extern void __pthread_init_static_tls (struct link_map *) attribute_hidden;
399 extern size_t __pthread_get_minstack (const pthread_attr_t *attr);
401 /* Namespace save aliases. */
402 extern int __pthread_getschedparam (pthread_t thread_id, int *policy,
403 struct sched_param *param);
404 extern int __pthread_setschedparam (pthread_t thread_id, int policy,
405 const struct sched_param *param);
406 extern int __pthread_setcancelstate (int state, int *oldstate);
407 extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
408 const pthread_mutexattr_t *__mutexattr);
409 extern int __pthread_mutex_init_internal (pthread_mutex_t *__mutex,
410 const pthread_mutexattr_t *__mutexattr)
412 extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
413 extern int __pthread_mutex_destroy_internal (pthread_mutex_t *__mutex)
415 extern int __pthread_mutex_trylock (pthread_mutex_t *_mutex);
416 extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
417 extern int __pthread_mutex_lock_internal (pthread_mutex_t *__mutex)
419 extern int __pthread_mutex_cond_lock (pthread_mutex_t *__mutex)
420 attribute_hidden internal_function;
421 extern void __pthread_mutex_cond_lock_adjust (pthread_mutex_t *__mutex)
422 attribute_hidden internal_function;
423 extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
424 extern int __pthread_mutex_unlock_internal (pthread_mutex_t *__mutex)
426 extern int __pthread_mutex_unlock_usercnt (pthread_mutex_t *__mutex,
428 attribute_hidden internal_function;
429 extern int __pthread_mutexattr_init (pthread_mutexattr_t *attr);
430 extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *attr);
431 extern int __pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind);
432 extern int __pthread_attr_destroy (pthread_attr_t *attr);
433 extern int __pthread_attr_getdetachstate (const pthread_attr_t *attr,
435 extern int __pthread_attr_setdetachstate (pthread_attr_t *attr,
437 extern int __pthread_attr_getinheritsched (const pthread_attr_t *attr,
439 extern int __pthread_attr_setinheritsched (pthread_attr_t *attr, int inherit);
440 extern int __pthread_attr_getschedparam (const pthread_attr_t *attr,
441 struct sched_param *param);
442 extern int __pthread_attr_setschedparam (pthread_attr_t *attr,
443 const struct sched_param *param);
444 extern int __pthread_attr_getschedpolicy (const pthread_attr_t *attr,
446 extern int __pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy);
447 extern int __pthread_attr_getscope (const pthread_attr_t *attr, int *scope);
448 extern int __pthread_attr_setscope (pthread_attr_t *attr, int scope);
449 extern int __pthread_attr_getstackaddr (const pthread_attr_t *__restrict
450 __attr, void **__restrict __stackaddr);
451 extern int __pthread_attr_setstackaddr (pthread_attr_t *__attr,
453 extern int __pthread_attr_getstacksize (const pthread_attr_t *__restrict
455 size_t *__restrict __stacksize);
456 extern int __pthread_attr_setstacksize (pthread_attr_t *__attr,
458 extern int __pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
459 void **__restrict __stackaddr,
460 size_t *__restrict __stacksize);
461 extern int __pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
463 extern int __pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
464 const pthread_rwlockattr_t *__restrict
466 extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
467 extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
468 extern int __pthread_rwlock_rdlock_internal (pthread_rwlock_t *__rwlock);
469 extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
470 extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
471 extern int __pthread_rwlock_wrlock_internal (pthread_rwlock_t *__rwlock);
472 extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
473 extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
474 extern int __pthread_rwlock_unlock_internal (pthread_rwlock_t *__rwlock);
475 extern int __pthread_cond_broadcast (pthread_cond_t *cond);
476 extern int __pthread_cond_destroy (pthread_cond_t *cond);
477 extern int __pthread_cond_init (pthread_cond_t *cond,
478 const pthread_condattr_t *cond_attr);
479 extern int __pthread_cond_signal (pthread_cond_t *cond);
480 extern int __pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex);
481 extern int __pthread_cond_timedwait (pthread_cond_t *cond,
482 pthread_mutex_t *mutex,
483 const struct timespec *abstime);
484 extern int __pthread_condattr_destroy (pthread_condattr_t *attr);
485 extern int __pthread_condattr_init (pthread_condattr_t *attr);
486 extern int __pthread_key_create (pthread_key_t *key, void (*destr) (void *));
487 extern int __pthread_key_create_internal (pthread_key_t *key,
488 void (*destr) (void *));
489 extern void *__pthread_getspecific (pthread_key_t key);
490 extern void *__pthread_getspecific_internal (pthread_key_t key);
491 extern int __pthread_setspecific (pthread_key_t key, const void *value);
492 extern int __pthread_setspecific_internal (pthread_key_t key,
494 extern int __pthread_once (pthread_once_t *once_control,
495 void (*init_routine) (void));
496 extern int __pthread_once_internal (pthread_once_t *once_control,
497 void (*init_routine) (void));
498 extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
499 void (*child) (void));
500 extern pthread_t __pthread_self (void);
501 extern int __pthread_equal (pthread_t thread1, pthread_t thread2);
502 extern int __pthread_kill (pthread_t threadid, int signo);
503 extern void __pthread_exit (void *value) __attribute__ ((__noreturn__));
504 extern int __pthread_setcanceltype (int type, int *oldtype);
505 extern int __pthread_enable_asynccancel (void) attribute_hidden;
506 extern void __pthread_disable_asynccancel (int oldtype)
507 internal_function attribute_hidden;
509 extern int __pthread_cond_broadcast_2_0 (pthread_cond_2_0_t *cond);
510 extern int __pthread_cond_destroy_2_0 (pthread_cond_2_0_t *cond);
511 extern int __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond,
512 const pthread_condattr_t *cond_attr);
513 extern int __pthread_cond_signal_2_0 (pthread_cond_2_0_t *cond);
514 extern int __pthread_cond_timedwait_2_0 (pthread_cond_2_0_t *cond,
515 pthread_mutex_t *mutex,
516 const struct timespec *abstime);
517 extern int __pthread_cond_wait_2_0 (pthread_cond_2_0_t *cond,
518 pthread_mutex_t *mutex);
520 extern int __pthread_getaffinity_np (pthread_t th, size_t cpusetsize,
523 /* The two functions are in libc.so and not exported. */
524 extern int __libc_enable_asynccancel (void) attribute_hidden;
525 extern void __libc_disable_asynccancel (int oldtype)
526 internal_function attribute_hidden;
529 /* The two functions are in librt.so and not exported. */
530 extern int __librt_enable_asynccancel (void) attribute_hidden;
531 extern void __librt_disable_asynccancel (int oldtype)
532 internal_function attribute_hidden;
534 #ifdef IS_IN_libpthread
535 /* Special versions which use non-exported functions. */
536 extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
537 void (*routine) (void *), void *arg)
539 # undef pthread_cleanup_push
540 # define pthread_cleanup_push(routine,arg) \
541 { struct _pthread_cleanup_buffer _buffer; \
542 __pthread_cleanup_push (&_buffer, (routine), (arg));
544 extern void __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
545 int execute) attribute_hidden;
546 # undef pthread_cleanup_pop
547 # define pthread_cleanup_pop(execute) \
548 __pthread_cleanup_pop (&_buffer, (execute)); }
551 extern void __pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
552 void (*routine) (void *), void *arg);
553 extern void __pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
556 /* Old cleanup interfaces, still used in libc.so. */
557 extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
558 void (*routine) (void *), void *arg);
559 extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
561 extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
562 void (*routine) (void *), void *arg);
563 extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
566 extern void __nptl_deallocate_tsd (void) attribute_hidden;
568 extern int __nptl_setxid (struct xid_command *cmdp) attribute_hidden;
570 extern void __nptl_set_robust (struct pthread *self);
573 extern void __free_stacks (size_t limit) attribute_hidden;
575 extern void __wait_lookup_done (void) attribute_hidden;
578 # define PTHREAD_STATIC_FN_REQUIRE(name)
580 # define PTHREAD_STATIC_FN_REQUIRE(name) __asm (".globl " #name);
584 #ifndef __NR_set_robust_list
585 /* XXX For the time being... Once we can rely on the kernel headers
586 having the definition remove these lines. */
587 # if defined __i386__
588 # define __NR_set_robust_list 311
589 # elif defined __x86_64__
590 # define __NR_set_robust_list 273
594 #endif /* pthreadP.h */