pthreadP.h 22 KB

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  1. /* Copyright (C) 2002-2007, 2009 Free Software Foundation, Inc.
  2. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #ifndef _PTHREADP_H
  15. #define _PTHREADP_H 1
  16. #include <pthread.h>
  17. #include <setjmp.h>
  18. #include <stdbool.h>
  19. #include <sys/syscall.h>
  20. #include "descr.h"
  21. #include <tls.h>
  22. #include <lowlevellock.h>
  23. #include <bits/stackinfo.h>
  24. #include <internaltypes.h>
  25. #include <atomic.h>
  26. #include <bits/kernel-features.h>
  27. #include <errno.h>
  28. #include <internal-signals.h>
  29. /* Atomic operations on TLS memory. */
  30. #ifndef THREAD_ATOMIC_CMPXCHG_VAL
  31. # define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, new, old) \
  32. atomic_compare_and_exchange_val_acq (&(descr)->member, new, old)
  33. #endif
  34. #ifndef THREAD_ATOMIC_BIT_SET
  35. # define THREAD_ATOMIC_BIT_SET(descr, member, bit) \
  36. atomic_bit_set (&(descr)->member, bit)
  37. #endif
  38. /* Adaptive mutex definitions. */
  39. #ifndef MAX_ADAPTIVE_COUNT
  40. # define MAX_ADAPTIVE_COUNT 100
  41. #endif
  42. /* Magic cookie representing robust mutex with dead owner. */
  43. #define PTHREAD_MUTEX_INCONSISTENT INT_MAX
  44. /* Magic cookie representing not recoverable robust mutex. */
  45. #define PTHREAD_MUTEX_NOTRECOVERABLE (INT_MAX - 1)
  46. /* Internal mutex type value. */
  47. enum
  48. {
  49. PTHREAD_MUTEX_KIND_MASK_NP = 3,
  50. PTHREAD_MUTEX_ROBUST_NORMAL_NP = 16,
  51. PTHREAD_MUTEX_ROBUST_RECURSIVE_NP
  52. = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_RECURSIVE_NP,
  53. PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP
  54. = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
  55. PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP
  56. = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ADAPTIVE_NP,
  57. PTHREAD_MUTEX_PRIO_INHERIT_NP = 32,
  58. PTHREAD_MUTEX_PI_NORMAL_NP
  59. = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_NORMAL,
  60. PTHREAD_MUTEX_PI_RECURSIVE_NP
  61. = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_RECURSIVE_NP,
  62. PTHREAD_MUTEX_PI_ERRORCHECK_NP
  63. = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
  64. PTHREAD_MUTEX_PI_ADAPTIVE_NP
  65. = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ADAPTIVE_NP,
  66. PTHREAD_MUTEX_PI_ROBUST_NORMAL_NP
  67. = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NORMAL_NP,
  68. PTHREAD_MUTEX_PI_ROBUST_RECURSIVE_NP
  69. = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_RECURSIVE_NP,
  70. PTHREAD_MUTEX_PI_ROBUST_ERRORCHECK_NP
  71. = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP,
  72. PTHREAD_MUTEX_PI_ROBUST_ADAPTIVE_NP
  73. = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP,
  74. PTHREAD_MUTEX_PRIO_PROTECT_NP = 64,
  75. PTHREAD_MUTEX_PP_NORMAL_NP
  76. = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_NORMAL,
  77. PTHREAD_MUTEX_PP_RECURSIVE_NP
  78. = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_RECURSIVE_NP,
  79. PTHREAD_MUTEX_PP_ERRORCHECK_NP
  80. = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
  81. PTHREAD_MUTEX_PP_ADAPTIVE_NP
  82. = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ADAPTIVE_NP
  83. };
  84. #define PTHREAD_MUTEX_PSHARED_BIT 128
  85. #define PTHREAD_MUTEX_TYPE(m) \
  86. ((m)->__data.__kind & 127)
  87. #if LLL_PRIVATE == 0 && LLL_SHARED == 128
  88. # define PTHREAD_MUTEX_PSHARED(m) \
  89. ((m)->__data.__kind & 128)
  90. #else
  91. # define PTHREAD_MUTEX_PSHARED(m) \
  92. (((m)->__data.__kind & 128) ? LLL_SHARED : LLL_PRIVATE)
  93. #endif
  94. /* The kernel when waking robust mutexes on exit never uses
  95. FUTEX_PRIVATE_FLAG FUTEX_WAKE. */
  96. #define PTHREAD_ROBUST_MUTEX_PSHARED(m) LLL_SHARED
  97. /* Ceiling in __data.__lock. __data.__lock is signed, so don't
  98. use the MSB bit in there, but in the mask also include that bit,
  99. so that the compiler can optimize & PTHREAD_MUTEX_PRIO_CEILING_MASK
  100. masking if the value is then shifted down by
  101. PTHREAD_MUTEX_PRIO_CEILING_SHIFT. */
  102. #define PTHREAD_MUTEX_PRIO_CEILING_SHIFT 19
  103. #define PTHREAD_MUTEX_PRIO_CEILING_MASK 0xfff80000
  104. /* Flags in mutex attr. */
  105. #define PTHREAD_MUTEXATTR_PROTOCOL_SHIFT 28
  106. #define PTHREAD_MUTEXATTR_PROTOCOL_MASK 0x30000000
  107. #define PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT 12
  108. #define PTHREAD_MUTEXATTR_PRIO_CEILING_MASK 0x00fff000
  109. #define PTHREAD_MUTEXATTR_FLAG_ROBUST 0x40000000
  110. #define PTHREAD_MUTEXATTR_FLAG_PSHARED 0x80000000
  111. #define PTHREAD_MUTEXATTR_FLAG_BITS \
  112. (PTHREAD_MUTEXATTR_FLAG_ROBUST | PTHREAD_MUTEXATTR_FLAG_PSHARED \
  113. | PTHREAD_MUTEXATTR_PROTOCOL_MASK | PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
  114. /* Check whether rwlock prefers readers. */
  115. #define PTHREAD_RWLOCK_PREFER_READER_P(rwlock) \
  116. ((rwlock)->__data.__flags == 0)
  117. /* Bits used in robust mutex implementation. */
  118. #define FUTEX_WAITERS 0x80000000
  119. #define FUTEX_OWNER_DIED 0x40000000
  120. #define FUTEX_TID_MASK 0x3fffffff
  121. /* Internal variables. */
  122. /* Default stack size. */
  123. extern size_t __default_stacksize attribute_hidden;
  124. /* Size and alignment of static TLS block. */
  125. extern size_t __static_tls_size attribute_hidden;
  126. extern size_t __static_tls_align_m1 attribute_hidden;
  127. /* Flag whether the machine is SMP or not. */
  128. extern int __is_smp attribute_hidden;
  129. /* Thread descriptor handling. */
  130. extern list_t __stack_user;
  131. hidden_proto (__stack_user)
  132. /* Attribute handling. */
  133. extern struct pthread_attr *__attr_list attribute_hidden;
  134. extern int __attr_list_lock attribute_hidden;
  135. /* First available RT signal. */
  136. extern int __current_sigrtmin attribute_hidden;
  137. /* Last available RT signal. */
  138. extern int __current_sigrtmax attribute_hidden;
  139. /* Concurrency handling. */
  140. extern int __concurrency_level attribute_hidden;
  141. /* Thread-local data key handling. */
  142. extern struct pthread_key_struct __pthread_keys[PTHREAD_KEYS_MAX];
  143. hidden_proto (__pthread_keys)
  144. /* Number of threads running. */
  145. extern unsigned int __nptl_nthreads
  146. #ifdef SHARED
  147. attribute_hidden
  148. #else
  149. __attribute ((weak))
  150. #endif
  151. ;
  152. #ifndef __ASSUME_SET_ROBUST_LIST
  153. /* Negative if we do not have the system call and we can use it. */
  154. extern int __set_robust_list_avail attribute_hidden;
  155. #endif
  156. /* Thread Priority Protection. */
  157. extern int __sched_fifo_min_prio attribute_hidden;
  158. extern int __sched_fifo_max_prio attribute_hidden;
  159. extern void __init_sched_fifo_prio (void) attribute_hidden;
  160. extern int __pthread_tpp_change_priority (int prev_prio, int new_prio)
  161. attribute_hidden;
  162. extern int __pthread_current_priority (void) attribute_hidden;
  163. /* The library can run in debugging mode where it performs a lot more
  164. tests. */
  165. extern int __pthread_debug attribute_hidden;
  166. /** For now disable debugging support. */
  167. #if 0
  168. # define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
  169. # define INVALID_TD_P(pd) (DEBUGGING_P && __find_in_stack_list (pd) == NULL)
  170. # define INVALID_NOT_TERMINATED_TD_P(pd) INVALID_TD_P (pd)
  171. #else
  172. # define DEBUGGING_P 0
  173. /* Simplified test. This will not catch all invalid descriptors but
  174. is better than nothing. And if the test triggers the thread
  175. descriptor is guaranteed to be invalid. */
  176. # define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0)
  177. # define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0)
  178. #endif
  179. /* Cancellation test. */
  180. #define CANCELLATION_P(self) \
  181. do { \
  182. cancelhandling = THREAD_GETMEM (self, cancelhandling); \
  183. if (CANCEL_ENABLED_AND_CANCELED (cancelhandling)) \
  184. { \
  185. THREAD_SETMEM (self, result, PTHREAD_CANCELED); \
  186. __do_cancel (); \
  187. } \
  188. } while (0)
  189. extern void __pthread_unwind (__pthread_unwind_buf_t *__buf)
  190. __cleanup_fct_attribute __attribute ((__noreturn__))
  191. #if !defined SHARED && !defined IS_IN_libpthread
  192. weak_function
  193. #endif
  194. ;
  195. extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf)
  196. __cleanup_fct_attribute __attribute ((__noreturn__))
  197. #ifndef SHARED
  198. weak_function
  199. #endif
  200. ;
  201. extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf)
  202. __cleanup_fct_attribute;
  203. extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf)
  204. __cleanup_fct_attribute;
  205. #if defined NOT_IN_libc && defined IS_IN_libpthread
  206. hidden_proto (__pthread_unwind)
  207. hidden_proto (__pthread_unwind_next)
  208. hidden_proto (__pthread_register_cancel)
  209. hidden_proto (__pthread_unregister_cancel)
  210. # ifdef SHARED
  211. extern void attribute_hidden pthread_cancel_init (void);
  212. extern void __unwind_freeres (void);
  213. # endif
  214. #endif
  215. /* Called when a thread reacts on a cancellation request. */
  216. static inline void
  217. __attribute ((noreturn, always_inline))
  218. __do_cancel (void)
  219. {
  220. struct pthread *self = THREAD_SELF;
  221. /* Make sure we get no more cancellations. */
  222. THREAD_ATOMIC_BIT_SET (self, cancelhandling, EXITING_BIT);
  223. __pthread_unwind ((__pthread_unwind_buf_t *)
  224. THREAD_GETMEM (self, cleanup_jmp_buf));
  225. }
  226. /* Set cancellation mode to asynchronous. */
  227. #define CANCEL_ASYNC() \
  228. __pthread_enable_asynccancel ()
  229. /* Reset to previous cancellation mode. */
  230. #define CANCEL_RESET(oldtype) \
  231. __pthread_disable_asynccancel (oldtype)
  232. #define __LABEL_PREFIX__ __stringify(__USER_LABEL_PREFIX__)
  233. #if !defined NOT_IN_libc
  234. /* Same as CANCEL_ASYNC, but for use in libc.so. */
  235. # define LIBC_CANCEL_ASYNC() \
  236. __libc_enable_asynccancel ()
  237. /* Same as CANCEL_RESET, but for use in libc.so. */
  238. # define LIBC_CANCEL_RESET(oldtype) \
  239. __libc_disable_asynccancel (oldtype)
  240. # define LIBC_CANCEL_HANDLED() \
  241. __asm__ (".globl " __LABEL_PREFIX__ "__libc_enable_asynccancel"); \
  242. __asm__ (".globl " __LABEL_PREFIX__ "__libc_disable_asynccancel")
  243. #elif defined NOT_IN_libc && defined IS_IN_libpthread
  244. # define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
  245. # define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
  246. # define LIBC_CANCEL_HANDLED() \
  247. __asm__ (".globl " __LABEL_PREFIX__ "__pthread_enable_asynccancel"); \
  248. __asm__ (".globl " __LABEL_PREFIX__ "__pthread_disable_asynccancel")
  249. #elif defined NOT_IN_libc && defined IS_IN_librt
  250. # define LIBC_CANCEL_ASYNC() \
  251. __librt_enable_asynccancel ()
  252. # define LIBC_CANCEL_RESET(val) \
  253. __librt_disable_asynccancel (val)
  254. # define LIBC_CANCEL_HANDLED() \
  255. __asm__ (".globl " __LABEL_PREFIX__ "__librt_enable_asynccancel"); \
  256. __asm__ (".globl " __LABEL_PREFIX__ "__librt_disable_asynccancel")
  257. #else
  258. # define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */
  259. # define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */
  260. # define LIBC_CANCEL_HANDLED() /* Nothing. */
  261. #endif
  262. /* Internal prototypes. */
  263. /* Thread list handling. */
  264. extern struct pthread *__find_in_stack_list (struct pthread *pd)
  265. attribute_hidden internal_function;
  266. /* Deallocate a thread's stack after optionally making sure the thread
  267. descriptor is still valid. */
  268. extern void __free_tcb (struct pthread *pd) attribute_hidden internal_function;
  269. /* Free allocated stack. */
  270. extern void __deallocate_stack (struct pthread *pd)
  271. attribute_hidden internal_function;
  272. /* Mark all the stacks except for the current one as available. This
  273. function also re-initializes the lock for the stack cache. */
  274. extern void __reclaim_stacks (void) attribute_hidden;
  275. /* Make all threads's stacks executable. */
  276. extern int __make_stacks_executable (void **stack_endp)
  277. internal_function attribute_hidden;
  278. /* longjmp handling. */
  279. extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);
  280. #if defined NOT_IN_libc && defined IS_IN_libpthread
  281. hidden_proto (__pthread_cleanup_upto)
  282. #endif
  283. extern int pthread_create (pthread_t *newthread,
  284. const pthread_attr_t *attr,
  285. void *(*start_routine) (void *), void *arg);
  286. extern int pthread_attr_init (pthread_attr_t *attr);
  287. /* Event handlers for libthread_db interface. */
  288. extern void __nptl_create_event (void);
  289. extern void __nptl_death_event (void);
  290. hidden_proto (__nptl_create_event)
  291. hidden_proto (__nptl_death_event)
  292. /* Register the generation counter in the libpthread with the libc. */
  293. #ifdef TLS_MULTIPLE_THREADS_IN_TCB
  294. extern void __libc_pthread_init (unsigned long int *ptr,
  295. void (*reclaim) (void));
  296. #else
  297. extern int *__libc_pthread_init (unsigned long int *ptr,
  298. void (*reclaim) (void));
  299. /* Variable set to a nonzero value if more than one thread runs or ran. */
  300. extern int __pthread_multiple_threads attribute_hidden;
  301. /* Pointer to the corresponding variable in libc. */
  302. extern int *__libc_multiple_threads_ptr attribute_hidden;
  303. #endif
  304. /* Find a thread given its TID. */
  305. extern struct pthread *__find_thread_by_id (pid_t tid) attribute_hidden
  306. #ifdef SHARED
  307. ;
  308. #else
  309. weak_function;
  310. #define __find_thread_by_id(tid) \
  311. (__find_thread_by_id ? (__find_thread_by_id) (tid) : (struct pthread *) NULL)
  312. #endif
  313. extern void __pthread_init_static_tls (struct link_map *) attribute_hidden;
  314. extern size_t __pthread_get_minstack (const pthread_attr_t *attr);
  315. /* Namespace save aliases. */
  316. extern int __pthread_getschedparam (pthread_t thread_id, int *policy,
  317. struct sched_param *param);
  318. extern int __pthread_setschedparam (pthread_t thread_id, int policy,
  319. const struct sched_param *param);
  320. extern int __pthread_setcancelstate (int state, int *oldstate);
  321. extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
  322. const pthread_mutexattr_t *__mutexattr);
  323. extern int __pthread_mutex_init_internal (pthread_mutex_t *__mutex,
  324. const pthread_mutexattr_t *__mutexattr)
  325. attribute_hidden;
  326. extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
  327. extern int __pthread_mutex_destroy_internal (pthread_mutex_t *__mutex)
  328. attribute_hidden;
  329. extern int __pthread_mutex_trylock (pthread_mutex_t *_mutex);
  330. extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
  331. extern int __pthread_mutex_lock_internal (pthread_mutex_t *__mutex)
  332. attribute_hidden;
  333. extern int __pthread_mutex_cond_lock (pthread_mutex_t *__mutex)
  334. attribute_hidden internal_function;
  335. extern void __pthread_mutex_cond_lock_adjust (pthread_mutex_t *__mutex)
  336. attribute_hidden internal_function;
  337. extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
  338. extern int __pthread_mutex_unlock_internal (pthread_mutex_t *__mutex)
  339. attribute_hidden;
  340. extern int __pthread_mutex_unlock_usercnt (pthread_mutex_t *__mutex,
  341. int __decr)
  342. attribute_hidden internal_function;
  343. extern int __pthread_mutexattr_init (pthread_mutexattr_t *attr);
  344. extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *attr);
  345. extern int __pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind);
  346. extern int __pthread_attr_destroy (pthread_attr_t *attr);
  347. extern int __pthread_attr_getdetachstate (const pthread_attr_t *attr,
  348. int *detachstate);
  349. extern int __pthread_attr_setdetachstate (pthread_attr_t *attr,
  350. int detachstate);
  351. extern int __pthread_attr_getinheritsched (const pthread_attr_t *attr,
  352. int *inherit);
  353. extern int __pthread_attr_setinheritsched (pthread_attr_t *attr, int inherit);
  354. extern int __pthread_attr_getschedparam (const pthread_attr_t *attr,
  355. struct sched_param *param);
  356. extern int __pthread_attr_setschedparam (pthread_attr_t *attr,
  357. const struct sched_param *param);
  358. extern int __pthread_attr_getschedpolicy (const pthread_attr_t *attr,
  359. int *policy);
  360. extern int __pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy);
  361. extern int __pthread_attr_getscope (const pthread_attr_t *attr, int *scope);
  362. extern int __pthread_attr_setscope (pthread_attr_t *attr, int scope);
  363. extern int __pthread_attr_getstackaddr (const pthread_attr_t *__restrict
  364. __attr, void **__restrict __stackaddr);
  365. extern int __pthread_attr_setstackaddr (pthread_attr_t *__attr,
  366. void *__stackaddr);
  367. extern int __pthread_attr_getstacksize (const pthread_attr_t *__restrict
  368. __attr,
  369. size_t *__restrict __stacksize);
  370. extern int __pthread_attr_setstacksize (pthread_attr_t *__attr,
  371. size_t __stacksize);
  372. extern int __pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
  373. void **__restrict __stackaddr,
  374. size_t *__restrict __stacksize);
  375. extern int __pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
  376. size_t __stacksize);
  377. extern int __pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
  378. const pthread_rwlockattr_t *__restrict
  379. __attr);
  380. extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
  381. extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
  382. extern int __pthread_rwlock_rdlock_internal (pthread_rwlock_t *__rwlock);
  383. extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
  384. extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
  385. extern int __pthread_rwlock_wrlock_internal (pthread_rwlock_t *__rwlock);
  386. extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
  387. extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
  388. extern int __pthread_rwlock_unlock_internal (pthread_rwlock_t *__rwlock);
  389. extern int __pthread_cond_broadcast (pthread_cond_t *cond);
  390. extern int __pthread_cond_destroy (pthread_cond_t *cond);
  391. extern int __pthread_cond_init (pthread_cond_t *cond,
  392. const pthread_condattr_t *cond_attr);
  393. extern int __pthread_cond_signal (pthread_cond_t *cond);
  394. extern int __pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex);
  395. extern int __pthread_cond_timedwait (pthread_cond_t *cond,
  396. pthread_mutex_t *mutex,
  397. const struct timespec *abstime);
  398. extern int __pthread_condattr_destroy (pthread_condattr_t *attr);
  399. extern int __pthread_condattr_init (pthread_condattr_t *attr);
  400. extern int __pthread_key_create (pthread_key_t *key, void (*destr) (void *));
  401. extern int __pthread_key_create_internal (pthread_key_t *key,
  402. void (*destr) (void *));
  403. extern void *__pthread_getspecific (pthread_key_t key);
  404. extern void *__pthread_getspecific_internal (pthread_key_t key);
  405. extern int __pthread_setspecific (pthread_key_t key, const void *value);
  406. extern int __pthread_setspecific_internal (pthread_key_t key,
  407. const void *value);
  408. extern int __pthread_once (pthread_once_t *once_control,
  409. void (*init_routine) (void));
  410. extern int __pthread_once_internal (pthread_once_t *once_control,
  411. void (*init_routine) (void));
  412. extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
  413. void (*child) (void));
  414. extern pthread_t __pthread_self (void);
  415. extern int __pthread_equal (pthread_t thread1, pthread_t thread2);
  416. extern int __pthread_kill (pthread_t threadid, int signo);
  417. extern void __pthread_exit (void *value);
  418. extern int __pthread_setcanceltype (int type, int *oldtype);
  419. extern int __pthread_enable_asynccancel (void) attribute_hidden;
  420. extern void __pthread_disable_asynccancel (int oldtype)
  421. internal_function attribute_hidden;
  422. extern int __pthread_cond_broadcast_2_0 (pthread_cond_2_0_t *cond);
  423. extern int __pthread_cond_destroy_2_0 (pthread_cond_2_0_t *cond);
  424. extern int __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond,
  425. const pthread_condattr_t *cond_attr);
  426. extern int __pthread_cond_signal_2_0 (pthread_cond_2_0_t *cond);
  427. extern int __pthread_cond_timedwait_2_0 (pthread_cond_2_0_t *cond,
  428. pthread_mutex_t *mutex,
  429. const struct timespec *abstime);
  430. extern int __pthread_cond_wait_2_0 (pthread_cond_2_0_t *cond,
  431. pthread_mutex_t *mutex);
  432. extern int __pthread_getaffinity_np (pthread_t th, size_t cpusetsize,
  433. cpu_set_t *cpuset);
  434. /* The two functions are in libc.so and not exported. */
  435. extern int __libc_enable_asynccancel (void) attribute_hidden;
  436. extern void __libc_disable_asynccancel (int oldtype)
  437. internal_function attribute_hidden;
  438. /* The two functions are in librt.so and not exported. */
  439. extern int __librt_enable_asynccancel (void) attribute_hidden;
  440. extern void __librt_disable_asynccancel (int oldtype)
  441. internal_function attribute_hidden;
  442. #ifdef IS_IN_libpthread
  443. /* Special versions which use non-exported functions. */
  444. extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
  445. void (*routine) (void *), void *arg)
  446. attribute_hidden;
  447. # undef pthread_cleanup_push
  448. # define pthread_cleanup_push(routine,arg) \
  449. { struct _pthread_cleanup_buffer _buffer; \
  450. __pthread_cleanup_push (&_buffer, (routine), (arg));
  451. extern void __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
  452. int execute) attribute_hidden;
  453. # undef pthread_cleanup_pop
  454. # define pthread_cleanup_pop(execute) \
  455. __pthread_cleanup_pop (&_buffer, (execute)); }
  456. #endif
  457. extern void __pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
  458. void (*routine) (void *), void *arg);
  459. extern void __pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
  460. int execute);
  461. /* Old cleanup interfaces, still used in libc.so. */
  462. extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
  463. void (*routine) (void *), void *arg);
  464. extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
  465. int execute);
  466. extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
  467. void (*routine) (void *), void *arg);
  468. extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
  469. int execute);
  470. extern void __nptl_deallocate_tsd (void)
  471. #ifdef SHARED
  472. attribute_hidden
  473. #else
  474. __attribute ((weak))
  475. #endif
  476. ;
  477. extern int __nptl_setxid (struct xid_command *cmdp) attribute_hidden;
  478. extern void __free_stacks (size_t limit) attribute_hidden;
  479. extern void __wait_lookup_done (void) attribute_hidden;
  480. #ifdef SHARED
  481. # define PTHREAD_STATIC_FN_REQUIRE(name)
  482. #else
  483. # define PTHREAD_STATIC_FN_REQUIRE(name) __asm__ (".globl " #name);
  484. #endif
  485. #ifndef __NR_set_robust_list
  486. /* XXX For the time being... Once we can rely on the kernel headers
  487. having the definition remove these lines. */
  488. # if defined __i386__
  489. # define __NR_set_robust_list 311
  490. # elif defined __x86_64__
  491. # define __NR_set_robust_list 273
  492. # endif
  493. #endif
  494. #endif /* pthreadP.h */