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[thirdparty/glibc.git] / nptl / pthreadP.h
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df94b641 1/* Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
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2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
4
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.
9
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.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
19
20#ifndef _PTHREADP_H
21#define _PTHREADP_H 1
22
23#include <pthread.h>
24#include <setjmp.h>
b758b9cb 25#include <stdbool.h>
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26#include <sys/syscall.h>
27#include "descr.h"
28#include <tls.h>
29#include <lowlevellock.h>
30#include <stackinfo.h>
31#include <internaltypes.h>
73e9ae88 32#include <pthread-functions.h>
86246935 33#include <atomic.h>
0f6699ea 34#include <kernel-features.h>
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35
36
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37/* Atomic operations on TLS memory. */
38#ifndef THREAD_ATOMIC_CMPXCHG_VAL
39# define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, new, old) \
40 atomic_compare_and_exchange_val_acq (&(descr)->member, new, old)
41#endif
42
43#ifndef THREAD_ATOMIC_BIT_SET
44# define THREAD_ATOMIC_BIT_SET(descr, member, bit) \
45 atomic_bit_set (&(descr)->member, bit)
46#endif
47
48
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49/* Adaptive mutex definitions. */
50#ifndef MAX_ADAPTIVE_COUNT
51# define MAX_ADAPTIVE_COUNT 100
52#endif
53
54
1bcfb5a5 55/* Magic cookie representing robust mutex with dead owner. */
683040c3 56#define PTHREAD_MUTEX_INCONSISTENT INT_MAX
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57/* Magic cookie representing not recoverable robust mutex. */
58#define PTHREAD_MUTEX_NOTRECOVERABLE (INT_MAX - 1)
59
60
61/* Internal mutex type value. */
62enum
63{
df47504c 64 PTHREAD_MUTEX_KIND_MASK_NP = 3,
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65 PTHREAD_MUTEX_ROBUST_NORMAL_NP = 16,
66 PTHREAD_MUTEX_ROBUST_RECURSIVE_NP
67 = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_RECURSIVE_NP,
68 PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP
69 = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
70 PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP
71 = PTHREAD_MUTEX_ROBUST_NORMAL_NP | PTHREAD_MUTEX_ADAPTIVE_NP,
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72 PTHREAD_MUTEX_PRIO_INHERIT_NP = 32,
73 PTHREAD_MUTEX_PI_NORMAL_NP
74 = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_NORMAL,
75 PTHREAD_MUTEX_PI_RECURSIVE_NP
76 = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_RECURSIVE_NP,
77 PTHREAD_MUTEX_PI_ERRORCHECK_NP
78 = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
79 PTHREAD_MUTEX_PI_ADAPTIVE_NP
80 = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ADAPTIVE_NP,
81 PTHREAD_MUTEX_PI_ROBUST_NORMAL_NP
82 = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NORMAL_NP,
83 PTHREAD_MUTEX_PI_ROBUST_RECURSIVE_NP
84 = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_RECURSIVE_NP,
85 PTHREAD_MUTEX_PI_ROBUST_ERRORCHECK_NP
86 = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP,
87 PTHREAD_MUTEX_PI_ROBUST_ADAPTIVE_NP
88 = PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP,
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89 PTHREAD_MUTEX_PRIO_PROTECT_NP = 64,
90 PTHREAD_MUTEX_PP_NORMAL_NP
91 = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_NORMAL,
92 PTHREAD_MUTEX_PP_RECURSIVE_NP
93 = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_RECURSIVE_NP,
94 PTHREAD_MUTEX_PP_ERRORCHECK_NP
95 = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ERRORCHECK_NP,
96 PTHREAD_MUTEX_PP_ADAPTIVE_NP
97 = PTHREAD_MUTEX_PRIO_PROTECT_NP | PTHREAD_MUTEX_ADAPTIVE_NP
1bcfb5a5 98};
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99
100/* Ceiling in __data.__lock. __data.__lock is signed, so don't
101 use the MSB bit in there, but in the mask also include that bit,
102 so that the compiler can optimize & PTHREAD_MUTEX_PRIO_CEILING_MASK
103 masking if the value is then shifted down by
104 PTHREAD_MUTEX_PRIO_CEILING_SHIFT. */
105#define PTHREAD_MUTEX_PRIO_CEILING_SHIFT 19
106#define PTHREAD_MUTEX_PRIO_CEILING_MASK 0xfff80000
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107
108
109/* Flags in mutex attr. */
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110#define PTHREAD_MUTEXATTR_PROTOCOL_SHIFT 28
111#define PTHREAD_MUTEXATTR_PROTOCOL_MASK 0x30000000
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112#define PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT 12
113#define PTHREAD_MUTEXATTR_PRIO_CEILING_MASK 0x00fff000
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114#define PTHREAD_MUTEXATTR_FLAG_ROBUST 0x40000000
115#define PTHREAD_MUTEXATTR_FLAG_PSHARED 0x80000000
1bcfb5a5 116#define PTHREAD_MUTEXATTR_FLAG_BITS \
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117 (PTHREAD_MUTEXATTR_FLAG_ROBUST | PTHREAD_MUTEXATTR_FLAG_PSHARED \
118 | PTHREAD_MUTEXATTR_PROTOCOL_MASK | PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
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119
120
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121/* Check whether rwlock prefers readers. */
122#define PTHREAD_RWLOCK_PREFER_READER_P(rwlock) \
123 ((rwlock)->__data.__flags == 0)
124
125
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126/* Bits used in robust mutex implementation. */
127#define FUTEX_WAITERS 0x80000000
128#define FUTEX_OWNER_DIED 0x40000000
2035d91c 129#define FUTEX_TID_MASK 0x3fffffff
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130
131
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132/* Internal variables. */
133
134
135/* Default stack size. */
136extern size_t __default_stacksize attribute_hidden;
137
138/* Size and alignment of static TLS block. */
139extern size_t __static_tls_size attribute_hidden;
bc6389ad 140extern size_t __static_tls_align_m1 attribute_hidden;
76a50749 141
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142/* Flag whether the machine is SMP or not. */
143extern int __is_smp attribute_hidden;
144
76a50749 145/* Thread descriptor handling. */
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146extern list_t __stack_user;
147hidden_proto (__stack_user)
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148
149/* Attribute handling. */
150extern struct pthread_attr *__attr_list attribute_hidden;
151extern lll_lock_t __attr_list_lock attribute_hidden;
152
153/* First available RT signal. */
154extern int __current_sigrtmin attribute_hidden;
155/* Last available RT signal. */
156extern int __current_sigrtmax attribute_hidden;
157
158/* Concurrency handling. */
159extern int __concurrency_level attribute_hidden;
160
161/* Thread-local data key handling. */
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162extern struct pthread_key_struct __pthread_keys[PTHREAD_KEYS_MAX];
163hidden_proto (__pthread_keys)
76a50749 164
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165/* Number of threads running. */
166extern unsigned int __nptl_nthreads attribute_hidden;
167
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168#ifndef __ASSUME_SET_ROBUST_LIST
169/* Negative if we do not have the system call and we can use it. */
170extern int __set_robust_list_avail attribute_hidden;
171#endif
172
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173/* Thread Priority Protection. */
174extern int __sched_fifo_min_prio attribute_hidden;
175extern int __sched_fifo_max_prio attribute_hidden;
176extern void __init_sched_fifo_prio (void) attribute_hidden;
177extern int __pthread_tpp_change_priority (int prev_prio, int new_prio)
178 attribute_hidden;
179extern int __pthread_current_priority (void) attribute_hidden;
180
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181/* The library can run in debugging mode where it performs a lot more
182 tests. */
183extern int __pthread_debug attribute_hidden;
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184/** For now disable debugging support. */
185#if 0
186# define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
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187# define INVALID_TD_P(pd) (DEBUGGING_P && __find_in_stack_list (pd) == NULL)
188# define INVALID_NOT_TERMINATED_TD_P(pd) INVALID_TD_P (pd)
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189#else
190# define DEBUGGING_P 0
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191/* Simplified test. This will not catch all invalid descriptors but
192 is better than nothing. And if the test triggers the thread
193 descriptor is guaranteed to be invalid. */
194# define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0)
195# define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0)
729924a0 196#endif
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197
198
199/* Cancellation test. */
200#define CANCELLATION_P(self) \
201 do { \
202 int cancelhandling = THREAD_GETMEM (self, cancelhandling); \
203 if (CANCEL_ENABLED_AND_CANCELED (cancelhandling)) \
204 { \
205 THREAD_SETMEM (self, result, PTHREAD_CANCELED); \
9ae0909b 206 __do_cancel (); \
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207 } \
208 } while (0)
209
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210
211extern void __pthread_unwind (__pthread_unwind_buf_t *__buf)
212 __cleanup_fct_attribute __attribute ((__noreturn__))
8b965f3d 213#if !defined SHARED && !defined IS_IN_libpthread
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214 weak_function
215#endif
216 ;
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217extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf)
218 __cleanup_fct_attribute __attribute ((__noreturn__))
219#ifndef SHARED
220 weak_function
221#endif
222 ;
223extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf)
224 __cleanup_fct_attribute;
225extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf)
226 __cleanup_fct_attribute;
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227#if defined NOT_IN_libc && defined IS_IN_libpthread
228hidden_proto (__pthread_unwind)
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229hidden_proto (__pthread_unwind_next)
230hidden_proto (__pthread_register_cancel)
231hidden_proto (__pthread_unregister_cancel)
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232# ifdef SHARED
233extern void attribute_hidden pthread_cancel_init (void);
234# endif
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235#endif
236
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237
238/* Called when a thread reacts on a cancellation request. */
239static inline void
dd9423a6 240__attribute ((noreturn, always_inline))
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241__do_cancel (void)
242{
243 struct pthread *self = THREAD_SELF;
244
245 /* Make sure we get no more cancellations. */
246 THREAD_ATOMIC_BIT_SET (self, cancelhandling, EXITING_BIT);
247
248 __pthread_unwind ((__pthread_unwind_buf_t *)
249 THREAD_GETMEM (self, cleanup_jmp_buf));
250}
251
252
76a50749 253/* Set cancellation mode to asynchronous. */
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254#define CANCEL_ASYNC() \
255 __pthread_enable_asynccancel ()
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256/* Reset to previous cancellation mode. */
257#define CANCEL_RESET(oldtype) \
bdb04f92 258 __pthread_disable_asynccancel (oldtype)
76a50749 259
9634cf9d 260#if !defined NOT_IN_libc
9ae0909b 261/* Same as CANCEL_ASYNC, but for use in libc.so. */
9634cf9d 262# define LIBC_CANCEL_ASYNC() \
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263 __libc_enable_asynccancel ()
264/* Same as CANCEL_RESET, but for use in libc.so. */
9634cf9d 265# define LIBC_CANCEL_RESET(oldtype) \
9ae0909b 266 __libc_disable_asynccancel (oldtype)
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267# define LIBC_CANCEL_HANDLED() \
268 __asm (".globl " __SYMBOL_PREFIX "__libc_enable_asynccancel"); \
269 __asm (".globl " __SYMBOL_PREFIX "__libc_disable_asynccancel")
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270#elif defined NOT_IN_libc && defined IS_IN_libpthread
271# define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
272# define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
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273# define LIBC_CANCEL_HANDLED() \
274 __asm (".globl " __SYMBOL_PREFIX "__pthread_enable_asynccancel"); \
275 __asm (".globl " __SYMBOL_PREFIX "__pthread_disable_asynccancel")
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276#elif defined NOT_IN_libc && defined IS_IN_librt
277# define LIBC_CANCEL_ASYNC() \
278 __librt_enable_asynccancel ()
279# define LIBC_CANCEL_RESET(val) \
280 __librt_disable_asynccancel (val)
281# define LIBC_CANCEL_HANDLED() \
282 __asm (".globl " __SYMBOL_PREFIX "__librt_enable_asynccancel"); \
283 __asm (".globl " __SYMBOL_PREFIX "__librt_disable_asynccancel")
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284#else
285# define LIBC_CANCEL_ASYNC() 0 /* Just a dummy value. */
286# define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it. */
52f3d213 287# define LIBC_CANCEL_HANDLED() /* Nothing. */
9634cf9d 288#endif
9ae0909b 289
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290/* The signal used for asynchronous cancelation. */
291#define SIGCANCEL __SIGRTMIN
292
293
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294/* Signal needed for the kernel-supported POSIX timer implementation.
295 We can reuse the cancellation signal since we can distinguish
296 cancellation from timer expirations. */
297#define SIGTIMER SIGCANCEL
2a9ae45c 298
9ae0909b 299
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300/* Signal used to implement the setuid et.al. functions. */
301#define SIGSETXID (__SIGRTMIN + 1)
302
303/* Used to communicate with signal handler. */
304extern struct xid_command *__xidcmd attribute_hidden;
305
306
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307/* Internal prototypes. */
308
309/* Thread list handling. */
310extern struct pthread *__find_in_stack_list (struct pthread *pd)
90491dc4 311 attribute_hidden internal_function;
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312
313/* Deallocate a thread's stack after optionally making sure the thread
314 descriptor is still valid. */
90491dc4 315extern void __free_tcb (struct pthread *pd) attribute_hidden internal_function;
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316
317/* Free allocated stack. */
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318extern void __deallocate_stack (struct pthread *pd)
319 attribute_hidden internal_function;
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320
321/* Mark all the stacks except for the current one as available. This
322 function also re-initializes the lock for the stack cache. */
323extern void __reclaim_stacks (void) attribute_hidden;
324
54ee14b3 325/* Make all threads's stacks executable. */
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326extern int __make_stacks_executable (void **stack_endp)
327 internal_function attribute_hidden;
54ee14b3 328
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329/* longjmp handling. */
330extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);
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331#if defined NOT_IN_libc && defined IS_IN_libpthread
332hidden_proto (__pthread_cleanup_upto)
333#endif
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334
335
336/* Functions with versioned interfaces. */
337extern int __pthread_create_2_1 (pthread_t *newthread,
338 const pthread_attr_t *attr,
339 void *(*start_routine) (void *), void *arg);
340extern int __pthread_create_2_0 (pthread_t *newthread,
341 const pthread_attr_t *attr,
342 void *(*start_routine) (void *), void *arg);
343extern int __pthread_attr_init_2_1 (pthread_attr_t *attr);
344extern int __pthread_attr_init_2_0 (pthread_attr_t *attr);
345
346
347/* Event handlers for libthread_db interface. */
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348extern void __nptl_create_event (void);
349extern void __nptl_death_event (void);
350hidden_proto (__nptl_create_event)
351hidden_proto (__nptl_death_event)
76a50749 352
8454830b 353/* Register the generation counter in the libpthread with the libc. */
5a03acfe 354#ifdef TLS_MULTIPLE_THREADS_IN_TCB
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355extern void __libc_pthread_init (unsigned long int *ptr,
356 void (*reclaim) (void),
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357 const struct pthread_functions *functions)
358 internal_function;
359#else
360extern int *__libc_pthread_init (unsigned long int *ptr,
361 void (*reclaim) (void),
362 const struct pthread_functions *functions)
363 internal_function;
364
365/* Variable set to a nonzero value if more than one thread runs or ran. */
366extern int __pthread_multiple_threads attribute_hidden;
367/* Pointer to the corresponding variable in libc. */
368extern int *__libc_multiple_threads_ptr attribute_hidden;
369#endif
8454830b 370
4165d44d 371/* Find a thread given its TID. */
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372extern struct pthread *__find_thread_by_id (pid_t tid) attribute_hidden
373#ifdef SHARED
374;
375#else
376weak_function;
377#define __find_thread_by_id(tid) \
378 (__find_thread_by_id ? (__find_thread_by_id) (tid) : (struct pthread *) NULL)
379#endif
4165d44d 380
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381extern void __pthread_init_static_tls (struct link_map *) attribute_hidden;
382
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383
384/* Namespace save aliases. */
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385extern int __pthread_getschedparam (pthread_t thread_id, int *policy,
386 struct sched_param *param);
387extern int __pthread_setschedparam (pthread_t thread_id, int policy,
388 const struct sched_param *param);
389extern int __pthread_setcancelstate (int state, int *oldstate);
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390extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
391 __const pthread_mutexattr_t *__mutexattr);
8454830b 392extern int __pthread_mutex_init_internal (pthread_mutex_t *__mutex,
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393 __const pthread_mutexattr_t *__mutexattr)
394 attribute_hidden;
76a50749 395extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
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396extern int __pthread_mutex_destroy_internal (pthread_mutex_t *__mutex)
397 attribute_hidden;
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398extern int __pthread_mutex_trylock (pthread_mutex_t *_mutex);
399extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
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400extern int __pthread_mutex_lock_internal (pthread_mutex_t *__mutex)
401 attribute_hidden;
69431c9a 402extern int __pthread_mutex_cond_lock (pthread_mutex_t *__mutex)
67b78ef9 403 attribute_hidden internal_function;
76a50749 404extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
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405extern int __pthread_mutex_unlock_internal (pthread_mutex_t *__mutex)
406 attribute_hidden;
407extern int __pthread_mutex_unlock_usercnt (pthread_mutex_t *__mutex,
8f31c0ef 408 int __decr)
3a4f2043 409 attribute_hidden internal_function;
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410extern int __pthread_mutexattr_init (pthread_mutexattr_t *attr);
411extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *attr);
412extern int __pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind);
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413extern int __pthread_attr_destroy (pthread_attr_t *attr);
414extern int __pthread_attr_getdetachstate (const pthread_attr_t *attr,
415 int *detachstate);
416extern int __pthread_attr_setdetachstate (pthread_attr_t *attr,
417 int detachstate);
418extern int __pthread_attr_getinheritsched (const pthread_attr_t *attr,
419 int *inherit);
420extern int __pthread_attr_setinheritsched (pthread_attr_t *attr, int inherit);
421extern int __pthread_attr_getschedparam (const pthread_attr_t *attr,
422 struct sched_param *param);
423extern int __pthread_attr_setschedparam (pthread_attr_t *attr,
424 const struct sched_param *param);
425extern int __pthread_attr_getschedpolicy (const pthread_attr_t *attr,
426 int *policy);
427extern int __pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy);
428extern int __pthread_attr_getscope (const pthread_attr_t *attr, int *scope);
429extern int __pthread_attr_setscope (pthread_attr_t *attr, int scope);
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430extern int __pthread_attr_getstackaddr (__const pthread_attr_t *__restrict
431 __attr, void **__restrict __stackaddr);
432extern int __pthread_attr_setstackaddr (pthread_attr_t *__attr,
433 void *__stackaddr);
434extern int __pthread_attr_getstacksize (__const pthread_attr_t *__restrict
435 __attr,
436 size_t *__restrict __stacksize);
437extern int __pthread_attr_setstacksize (pthread_attr_t *__attr,
438 size_t __stacksize);
439extern int __pthread_attr_getstack (__const pthread_attr_t *__restrict __attr,
440 void **__restrict __stackaddr,
441 size_t *__restrict __stacksize);
442extern int __pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
443 size_t __stacksize);
444extern int __pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
445 __const pthread_rwlockattr_t *__restrict
446 __attr);
447extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
448extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
73e9ae88 449extern int __pthread_rwlock_rdlock_internal (pthread_rwlock_t *__rwlock);
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450extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
451extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
73e9ae88 452extern int __pthread_rwlock_wrlock_internal (pthread_rwlock_t *__rwlock);
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453extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
454extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
73e9ae88 455extern int __pthread_rwlock_unlock_internal (pthread_rwlock_t *__rwlock);
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456extern int __pthread_cond_broadcast (pthread_cond_t *cond);
457extern int __pthread_cond_destroy (pthread_cond_t *cond);
458extern int __pthread_cond_init (pthread_cond_t *cond,
459 const pthread_condattr_t *cond_attr);
460extern int __pthread_cond_signal (pthread_cond_t *cond);
461extern int __pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex);
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462extern int __pthread_cond_timedwait (pthread_cond_t *cond,
463 pthread_mutex_t *mutex,
464 const struct timespec *abstime);
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465extern int __pthread_condattr_destroy (pthread_condattr_t *attr);
466extern int __pthread_condattr_init (pthread_condattr_t *attr);
76a50749 467extern int __pthread_key_create (pthread_key_t *key, void (*destr) (void *));
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468extern int __pthread_key_create_internal (pthread_key_t *key,
469 void (*destr) (void *));
76a50749 470extern void *__pthread_getspecific (pthread_key_t key);
73e9ae88 471extern void *__pthread_getspecific_internal (pthread_key_t key);
76a50749 472extern int __pthread_setspecific (pthread_key_t key, const void *value);
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473extern int __pthread_setspecific_internal (pthread_key_t key,
474 const void *value);
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475extern int __pthread_once (pthread_once_t *once_control,
476 void (*init_routine) (void));
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477extern int __pthread_once_internal (pthread_once_t *once_control,
478 void (*init_routine) (void));
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479extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
480 void (*child) (void));
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481extern pthread_t __pthread_self (void);
482extern int __pthread_equal (pthread_t thread1, pthread_t thread2);
09efc3ba 483extern int __pthread_kill (pthread_t threadid, int signo);
8454830b 484extern void __pthread_exit (void *value);
09efc3ba 485extern int __pthread_setcanceltype (int type, int *oldtype);
bdb04f92 486extern int __pthread_enable_asynccancel (void) attribute_hidden;
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487extern void __pthread_disable_asynccancel (int oldtype)
488 internal_function attribute_hidden;
489
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490extern int __pthread_cond_broadcast_2_0 (pthread_cond_2_0_t *cond);
491extern int __pthread_cond_destroy_2_0 (pthread_cond_2_0_t *cond);
492extern int __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond,
05df18c3 493 const pthread_condattr_t *cond_attr);
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494extern int __pthread_cond_signal_2_0 (pthread_cond_2_0_t *cond);
495extern int __pthread_cond_timedwait_2_0 (pthread_cond_2_0_t *cond,
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496 pthread_mutex_t *mutex,
497 const struct timespec *abstime);
997256dd 498extern int __pthread_cond_wait_2_0 (pthread_cond_2_0_t *cond,
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499 pthread_mutex_t *mutex);
500
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501extern int __pthread_getaffinity_np (pthread_t th, size_t cpusetsize,
502 cpu_set_t *cpuset);
73e9ae88 503
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504/* The two functions are in libc.so and not exported. */
505extern int __libc_enable_asynccancel (void) attribute_hidden;
506extern void __libc_disable_asynccancel (int oldtype)
507 internal_function attribute_hidden;
09efc3ba 508
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509
510/* The two functions are in librt.so and not exported. */
511extern int __librt_enable_asynccancel (void) attribute_hidden;
512extern void __librt_disable_asynccancel (int oldtype)
513 internal_function attribute_hidden;
514
1e506629 515#ifdef IS_IN_libpthread
09efc3ba 516/* Special versions which use non-exported functions. */
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517extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
518 void (*routine) (void *), void *arg)
09efc3ba 519 attribute_hidden;
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520# undef pthread_cleanup_push
521# define pthread_cleanup_push(routine,arg) \
09efc3ba 522 { struct _pthread_cleanup_buffer _buffer; \
73e9ae88 523 __pthread_cleanup_push (&_buffer, (routine), (arg));
09efc3ba 524
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525extern void __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
526 int execute) attribute_hidden;
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527# undef pthread_cleanup_pop
528# define pthread_cleanup_pop(execute) \
73e9ae88 529 __pthread_cleanup_pop (&_buffer, (execute)); }
1e506629 530#endif
76a50749 531
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532extern void __pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
533 void (*routine) (void *), void *arg);
534extern void __pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
535 int execute);
536
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537/* Old cleanup interfaces, still used in libc.so. */
538extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
539 void (*routine) (void *), void *arg);
540extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
541 int execute);
542extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
543 void (*routine) (void *), void *arg);
544extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
545 int execute);
546
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547extern void __nptl_deallocate_tsd (void) attribute_hidden;
548
ccd8de9a 549extern int __nptl_setxid (struct xid_command *cmdp) attribute_hidden;
2edb61e3 550
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551extern void __free_stack_cache (void) attribute_hidden;
552
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553extern void __wait_lookup_done (void) attribute_hidden;
554
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555#ifdef SHARED
556# define PTHREAD_STATIC_FN_REQUIRE(name)
557#else
558# define PTHREAD_STATIC_FN_REQUIRE(name) __asm (".globl " #name);
559#endif
560
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561
562#ifndef __NR_set_robust_list
563/* XXX For the time being... Once we can rely on the kernel headers
564 having the definition remove these lines. */
565# if defined __i386__
566# define __NR_set_robust_list 311
567# elif defined __x86_64__
568# define __NR_set_robust_list 273
569# endif
570#endif
571
76a50749 572#endif /* pthreadP.h */