nptl/pthreadP.h

   1 /* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
   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>
  25 #include <stdbool.h>
  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>
  32 #include <pthread-functions.h>
  33 #include <atomic.h>
  34 #include <kernel-features.h>
  35
  36
  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
  49 /* Adaptive mutex definitions.  */
  50 #ifndef MAX_ADAPTIVE_COUNT
  51 # define MAX_ADAPTIVE_COUNT 100
  52 #endif
  53
  54
  55 /* Magic cookie representing robust mutex with dead owner.  */
  56 #define PTHREAD_MUTEX_INCONSISTENT      INT_MAX
  57 /* Magic cookie representing not recoverable robust mutex.  */
  58 #define PTHREAD_MUTEX_NOTRECOVERABLE    (INT_MAX - 1)
  59
  60
  61 /* Internal mutex type value.  */
  62 enum
  63 {
  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_PRIVATE_NP = 32,
  72   PTHREAD_MUTEX_PRIO_PROTECT_PRIVATE_NP = 64
  73 };
  74 #define PTHREAD_MUTEX_PRIO_CEILING_SHIFT        16
  75 #define PTHREAD_MUTEX_PRIO_CEILING_MASK         0x00ff0000
  76
  77
  78 /* Flags in mutex attr.  */
  79 #define PTHREAD_MUTEXATTR_PROTOCOL_SHIFT        28
  80 #define PTHREAD_MUTEXATTR_PROTOCOL_MASK         0x30000000
  81 #define PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT    16
  82 #define PTHREAD_MUTEXATTR_PRIO_CEILING_MASK     0x00ff0000
  83 #define PTHREAD_MUTEXATTR_FLAG_ROBUST           0x40000000
  84 #define PTHREAD_MUTEXATTR_FLAG_PSHARED          0x80000000
  85 #define PTHREAD_MUTEXATTR_FLAG_BITS \
  86   (PTHREAD_MUTEXATTR_FLAG_ROBUST | PTHREAD_MUTEXATTR_FLAG_PSHARED \
  87    | PTHREAD_MUTEXATTR_PROTOCOL_MASK | PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
  88
  89
  90 /* Bits used in robust mutex implementation.  */
  91 #define FUTEX_WAITERS           0x80000000
  92 #define FUTEX_OWNER_DIED        0x40000000
  93 #define FUTEX_TID_MASK          0x3fffffff
  94
  95
  96 /* Internal variables.  */
  97
  98
  99 /* Default stack size.  */
 100 extern size_t __default_stacksize attribute_hidden;
 101
 102 /* Size and alignment of static TLS block.  */
 103 extern size_t __static_tls_size attribute_hidden;
 104 extern size_t __static_tls_align_m1 attribute_hidden;
 105
 106 /* Flag whether the machine is SMP or not.  */
 107 extern int __is_smp attribute_hidden;
 108
 109 /* Thread descriptor handling.  */
 110 extern list_t __stack_user;
 111 hidden_proto (__stack_user)
 112
 113 /* Attribute handling.  */
 114 extern struct pthread_attr *__attr_list attribute_hidden;
 115 extern lll_lock_t __attr_list_lock attribute_hidden;
 116
 117 /* First available RT signal.  */
 118 extern int __current_sigrtmin attribute_hidden;
 119 /* Last available RT signal.  */
 120 extern int __current_sigrtmax attribute_hidden;
 121
 122 /* Concurrency handling.  */
 123 extern int __concurrency_level attribute_hidden;
 124
 125 /* Thread-local data key handling.  */
 126 extern struct pthread_key_struct __pthread_keys[PTHREAD_KEYS_MAX];
 127 hidden_proto (__pthread_keys)
 128
 129 /* Number of threads running.  */
 130 extern unsigned int __nptl_nthreads attribute_hidden;
 131
 132 #ifndef __ASSUME_SET_ROBUST_LIST
 133 /* Negative if we do not have the system call and we can use it.  */
 134 extern int __set_robust_list_avail attribute_hidden;
 135 #endif
 136
 137 /* The library can run in debugging mode where it performs a lot more
 138    tests.  */
 139 extern int __pthread_debug attribute_hidden;
 140 /** For now disable debugging support.  */
 141 #if 0
 142 # define DEBUGGING_P __builtin_expect (__pthread_debug, 0)
 143 # define INVALID_TD_P(pd) (DEBUGGING_P && __find_in_stack_list (pd) == NULL)
 144 # define INVALID_NOT_TERMINATED_TD_P(pd) INVALID_TD_P (pd)
 145 #else
 146 # define DEBUGGING_P 0
 147 /* Simplified test.  This will not catch all invalid descriptors but
 148    is better than nothing.  And if the test triggers the thread
 149    descriptor is guaranteed to be invalid.  */
 150 # define INVALID_TD_P(pd) __builtin_expect ((pd)->tid <= 0, 0)
 151 # define INVALID_NOT_TERMINATED_TD_P(pd) __builtin_expect ((pd)->tid < 0, 0)
 152 #endif
 153
 154
 155 /* Cancellation test.  */
 156 #define CANCELLATION_P(self) \
 157   do {                                                                        \
 158     int cancelhandling = THREAD_GETMEM (self, cancelhandling);                \
 159     if (CANCEL_ENABLED_AND_CANCELED (cancelhandling))                         \
 160       {                                                                       \
 161         THREAD_SETMEM (self, result, PTHREAD_CANCELED);                       \
 162         __do_cancel ();                                                       \
 163       }                                                                       \
 164   } while (0)
 165
 166
 167 extern void __pthread_unwind (__pthread_unwind_buf_t *__buf)
 168      __cleanup_fct_attribute __attribute ((__noreturn__))
 169 #if !defined SHARED && !defined IS_IN_libpthread
 170      weak_function
 171 #endif
 172      ;
 173 extern void __pthread_unwind_next (__pthread_unwind_buf_t *__buf)
 174      __cleanup_fct_attribute __attribute ((__noreturn__))
 175 #ifndef SHARED
 176      weak_function
 177 #endif
 178      ;
 179 extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf)
 180      __cleanup_fct_attribute;
 181 extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf)
 182      __cleanup_fct_attribute;
 183 #if defined NOT_IN_libc && defined IS_IN_libpthread
 184 hidden_proto (__pthread_unwind)
 185 hidden_proto (__pthread_unwind_next)
 186 hidden_proto (__pthread_register_cancel)
 187 hidden_proto (__pthread_unregister_cancel)
 188 # ifdef SHARED
 189 extern void attribute_hidden pthread_cancel_init (void);
 190 # endif
 191 #endif
 192
 193
 194 /* Called when a thread reacts on a cancellation request.  */
 195 static inline void
 196 __attribute ((noreturn, always_inline))
 197 __do_cancel (void)
 198 {
 199   struct pthread *self = THREAD_SELF;
 200
 201   /* Make sure we get no more cancellations.  */
 202   THREAD_ATOMIC_BIT_SET (self, cancelhandling, EXITING_BIT);
 203
 204   __pthread_unwind ((__pthread_unwind_buf_t *)
 205                     THREAD_GETMEM (self, cleanup_jmp_buf));
 206 }
 207
 208
 209 /* Set cancellation mode to asynchronous.  */
 210 #define CANCEL_ASYNC() \
 211   __pthread_enable_asynccancel ()
 212 /* Reset to previous cancellation mode.  */
 213 #define CANCEL_RESET(oldtype) \
 214   __pthread_disable_asynccancel (oldtype)
 215
 216 #if !defined NOT_IN_libc
 217 /* Same as CANCEL_ASYNC, but for use in libc.so.  */
 218 # define LIBC_CANCEL_ASYNC() \
 219   __libc_enable_asynccancel ()
 220 /* Same as CANCEL_RESET, but for use in libc.so.  */
 221 # define LIBC_CANCEL_RESET(oldtype) \
 222   __libc_disable_asynccancel (oldtype)
 223 # define LIBC_CANCEL_HANDLED() \
 224   __asm (".globl " __SYMBOL_PREFIX "__libc_enable_asynccancel"); \
 225   __asm (".globl " __SYMBOL_PREFIX "__libc_disable_asynccancel")
 226 #elif defined NOT_IN_libc && defined IS_IN_libpthread
 227 # define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
 228 # define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
 229 # define LIBC_CANCEL_HANDLED() \
 230   __asm (".globl " __SYMBOL_PREFIX "__pthread_enable_asynccancel"); \
 231   __asm (".globl " __SYMBOL_PREFIX "__pthread_disable_asynccancel")
 232 #elif defined NOT_IN_libc && defined IS_IN_librt
 233 # define LIBC_CANCEL_ASYNC() \
 234   __librt_enable_asynccancel ()
 235 # define LIBC_CANCEL_RESET(val) \
 236   __librt_disable_asynccancel (val)
 237 # define LIBC_CANCEL_HANDLED() \
 238   __asm (".globl " __SYMBOL_PREFIX "__librt_enable_asynccancel"); \
 239   __asm (".globl " __SYMBOL_PREFIX "__librt_disable_asynccancel")
 240 #else
 241 # define LIBC_CANCEL_ASYNC()    0 /* Just a dummy value.  */
 242 # define LIBC_CANCEL_RESET(val) ((void)(val)) /* Nothing, but evaluate it.  */
 243 # define LIBC_CANCEL_HANDLED()  /* Nothing.  */
 244 #endif
 245
 246 /* The signal used for asynchronous cancelation.  */
 247 #define SIGCANCEL       __SIGRTMIN
 248
 249
 250 /* Signal needed for the kernel-supported POSIX timer implementation.
 251    We can reuse the cancellation signal since we can distinguish
 252    cancellation from timer expirations.  */
 253 #define SIGTIMER        SIGCANCEL
 254
 255
 256 /* Signal used to implement the setuid et.al. functions.  */
 257 #define SIGSETXID       (__SIGRTMIN + 1)
 258
 259 /* Used to communicate with signal handler.  */
 260 extern struct xid_command *__xidcmd attribute_hidden;
 261
 262
 263 /* Internal prototypes.  */
 264
 265 /* Thread list handling.  */
 266 extern struct pthread *__find_in_stack_list (struct pthread *pd)
 267      attribute_hidden internal_function;
 268
 269 /* Deallocate a thread's stack after optionally making sure the thread
 270    descriptor is still valid.  */
 271 extern void __free_tcb (struct pthread *pd) attribute_hidden internal_function;
 272
 273 /* Free allocated stack.  */
 274 extern void __deallocate_stack (struct pthread *pd)
 275      attribute_hidden internal_function;
 276
 277 /* Mark all the stacks except for the current one as available.  This
 278    function also re-initializes the lock for the stack cache.  */
 279 extern void __reclaim_stacks (void) attribute_hidden;
 280
 281 /* Make all threads's stacks executable.  */
 282 extern int __make_stacks_executable (void **stack_endp)
 283      internal_function attribute_hidden;
 284
 285 /* longjmp handling.  */
 286 extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);
 287 #if defined NOT_IN_libc && defined IS_IN_libpthread
 288 hidden_proto (__pthread_cleanup_upto)
 289 #endif
 290
 291
 292 /* Functions with versioned interfaces.  */
 293 extern int __pthread_create_2_1 (pthread_t *newthread,
 294                                  const pthread_attr_t *attr,
 295                                  void *(*start_routine) (void *), void *arg);
 296 extern int __pthread_create_2_0 (pthread_t *newthread,
 297                                  const pthread_attr_t *attr,
 298                                  void *(*start_routine) (void *), void *arg);
 299 extern int __pthread_attr_init_2_1 (pthread_attr_t *attr);
 300 extern int __pthread_attr_init_2_0 (pthread_attr_t *attr);
 301
 302
 303 /* Event handlers for libthread_db interface.  */
 304 extern void __nptl_create_event (void);
 305 extern void __nptl_death_event (void);
 306 hidden_proto (__nptl_create_event)
 307 hidden_proto (__nptl_death_event)
 308
 309 /* Register the generation counter in the libpthread with the libc.  */
 310 #ifdef TLS_MULTIPLE_THREADS_IN_TCB
 311 extern void __libc_pthread_init (unsigned long int *ptr,
 312                                  void (*reclaim) (void),
 313                                  const struct pthread_functions *functions)
 314      internal_function;
 315 #else
 316 extern int *__libc_pthread_init (unsigned long int *ptr,
 317                                  void (*reclaim) (void),
 318                                  const struct pthread_functions *functions)
 319      internal_function;
 320
 321 /* Variable set to a nonzero value if more than one thread runs or ran.  */
 322 extern int __pthread_multiple_threads attribute_hidden;
 323 /* Pointer to the corresponding variable in libc.  */
 324 extern int *__libc_multiple_threads_ptr attribute_hidden;
 325 #endif
 326
 327 /* Find a thread given its TID.  */
 328 extern struct pthread *__find_thread_by_id (pid_t tid) attribute_hidden
 329 #ifdef SHARED
 330 ;
 331 #else
 332 weak_function;
 333 #define __find_thread_by_id(tid) \
 334   (__find_thread_by_id ? (__find_thread_by_id) (tid) : (struct pthread *) NULL)
 335 #endif
 336
 337 extern void __pthread_init_static_tls (struct link_map *) attribute_hidden;
 338
 339
 340 /* Namespace save aliases.  */
 341 extern int __pthread_getschedparam (pthread_t thread_id, int *policy,
 342                                     struct sched_param *param);
 343 extern int __pthread_setschedparam (pthread_t thread_id, int policy,
 344                                     const struct sched_param *param);
 345 extern int __pthread_setcancelstate (int state, int *oldstate);
 346 extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
 347                                  __const pthread_mutexattr_t *__mutexattr);
 348 extern int __pthread_mutex_init_internal (pthread_mutex_t *__mutex,
 349                                           __const pthread_mutexattr_t *__mutexattr)
 350      attribute_hidden;
 351 extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
 352 extern int __pthread_mutex_destroy_internal (pthread_mutex_t *__mutex)
 353      attribute_hidden;
 354 extern int __pthread_mutex_trylock (pthread_mutex_t *_mutex);
 355 extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
 356 extern int __pthread_mutex_lock_internal (pthread_mutex_t *__mutex)
 357      attribute_hidden;
 358 extern int __pthread_mutex_cond_lock (pthread_mutex_t *__mutex)
 359      attribute_hidden internal_function;
 360 extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
 361 extern int __pthread_mutex_unlock_internal (pthread_mutex_t *__mutex)
 362      attribute_hidden;
 363 extern int __pthread_mutex_unlock_usercnt (pthread_mutex_t *__mutex,
 364                                            int __decr)
 365      attribute_hidden internal_function;
 366 extern int __pthread_mutexattr_init (pthread_mutexattr_t *attr);
 367 extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *attr);
 368 extern int __pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind);
 369 extern int __pthread_attr_destroy (pthread_attr_t *attr);
 370 extern int __pthread_attr_getdetachstate (const pthread_attr_t *attr,
 371                                           int *detachstate);
 372 extern int __pthread_attr_setdetachstate (pthread_attr_t *attr,
 373                                           int detachstate);
 374 extern int __pthread_attr_getinheritsched (const pthread_attr_t *attr,
 375                                            int *inherit);
 376 extern int __pthread_attr_setinheritsched (pthread_attr_t *attr, int inherit);
 377 extern int __pthread_attr_getschedparam (const pthread_attr_t *attr,
 378                                          struct sched_param *param);
 379 extern int __pthread_attr_setschedparam (pthread_attr_t *attr,
 380                                          const struct sched_param *param);
 381 extern int __pthread_attr_getschedpolicy (const pthread_attr_t *attr,
 382                                           int *policy);
 383 extern int __pthread_attr_setschedpolicy (pthread_attr_t *attr, int policy);
 384 extern int __pthread_attr_getscope (const pthread_attr_t *attr, int *scope);
 385 extern int __pthread_attr_setscope (pthread_attr_t *attr, int scope);
 386 extern int __pthread_attr_getstackaddr (__const pthread_attr_t *__restrict
 387                                         __attr, void **__restrict __stackaddr);
 388 extern int __pthread_attr_setstackaddr (pthread_attr_t *__attr,
 389                                         void *__stackaddr);
 390 extern int __pthread_attr_getstacksize (__const pthread_attr_t *__restrict
 391                                         __attr,
 392                                         size_t *__restrict __stacksize);
 393 extern int __pthread_attr_setstacksize (pthread_attr_t *__attr,
 394                                         size_t __stacksize);
 395 extern int __pthread_attr_getstack (__const pthread_attr_t *__restrict __attr,
 396                                     void **__restrict __stackaddr,
 397                                     size_t *__restrict __stacksize);
 398 extern int __pthread_attr_setstack (pthread_attr_t *__attr, void *__stackaddr,
 399                                     size_t __stacksize);
 400 extern int __pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
 401                                   __const pthread_rwlockattr_t *__restrict
 402                                   __attr);
 403 extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
 404 extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
 405 extern int __pthread_rwlock_rdlock_internal (pthread_rwlock_t *__rwlock);
 406 extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
 407 extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
 408 extern int __pthread_rwlock_wrlock_internal (pthread_rwlock_t *__rwlock);
 409 extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
 410 extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
 411 extern int __pthread_rwlock_unlock_internal (pthread_rwlock_t *__rwlock);
 412 extern int __pthread_cond_broadcast (pthread_cond_t *cond);
 413 extern int __pthread_cond_destroy (pthread_cond_t *cond);
 414 extern int __pthread_cond_init (pthread_cond_t *cond,
 415                                 const pthread_condattr_t *cond_attr);
 416 extern int __pthread_cond_signal (pthread_cond_t *cond);
 417 extern int __pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex);
 418 extern int __pthread_cond_timedwait (pthread_cond_t *cond,
 419                                      pthread_mutex_t *mutex,
 420                                      const struct timespec *abstime);
 421 extern int __pthread_condattr_destroy (pthread_condattr_t *attr);
 422 extern int __pthread_condattr_init (pthread_condattr_t *attr);
 423 extern int __pthread_key_create (pthread_key_t *key, void (*destr) (void *));
 424 extern int __pthread_key_create_internal (pthread_key_t *key,
 425                                           void (*destr) (void *));
 426 extern void *__pthread_getspecific (pthread_key_t key);
 427 extern void *__pthread_getspecific_internal (pthread_key_t key);
 428 extern int __pthread_setspecific (pthread_key_t key, const void *value);
 429 extern int __pthread_setspecific_internal (pthread_key_t key,
 430                                            const void *value);
 431 extern int __pthread_once (pthread_once_t *once_control,
 432                            void (*init_routine) (void));
 433 extern int __pthread_once_internal (pthread_once_t *once_control,
 434                                     void (*init_routine) (void));
 435 extern int __pthread_atfork (void (*prepare) (void), void (*parent) (void),
 436                              void (*child) (void));
 437 extern pthread_t __pthread_self (void);
 438 extern int __pthread_equal (pthread_t thread1, pthread_t thread2);
 439 extern int __pthread_kill (pthread_t threadid, int signo);
 440 extern void __pthread_exit (void *value);
 441 extern int __pthread_setcanceltype (int type, int *oldtype);
 442 extern int __pthread_enable_asynccancel (void) attribute_hidden;
 443 extern void __pthread_disable_asynccancel (int oldtype)
 444      internal_function attribute_hidden;
 445
 446 extern int __pthread_cond_broadcast_2_0 (pthread_cond_2_0_t *cond);
 447 extern int __pthread_cond_destroy_2_0 (pthread_cond_2_0_t *cond);
 448 extern int __pthread_cond_init_2_0 (pthread_cond_2_0_t *cond,
 449                                     const pthread_condattr_t *cond_attr);
 450 extern int __pthread_cond_signal_2_0 (pthread_cond_2_0_t *cond);
 451 extern int __pthread_cond_timedwait_2_0 (pthread_cond_2_0_t *cond,
 452                                          pthread_mutex_t *mutex,
 453                                          const struct timespec *abstime);
 454 extern int __pthread_cond_wait_2_0 (pthread_cond_2_0_t *cond,
 455                                     pthread_mutex_t *mutex);
 456
 457 extern int __pthread_getaffinity_np (pthread_t th, size_t cpusetsize,
 458                                      cpu_set_t *cpuset);
 459
 460 /* The two functions are in libc.so and not exported.  */
 461 extern int __libc_enable_asynccancel (void) attribute_hidden;
 462 extern void __libc_disable_asynccancel (int oldtype)
 463      internal_function attribute_hidden;
 464
 465
 466 /* The two functions are in librt.so and not exported.  */
 467 extern int __librt_enable_asynccancel (void) attribute_hidden;
 468 extern void __librt_disable_asynccancel (int oldtype)
 469      internal_function attribute_hidden;
 470
 471 #ifdef IS_IN_libpthread
 472 /* Special versions which use non-exported functions.  */
 473 extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
 474                                     void (*routine) (void *), void *arg)
 475      attribute_hidden;
 476 # undef pthread_cleanup_push
 477 # define pthread_cleanup_push(routine,arg) \
 478   { struct _pthread_cleanup_buffer _buffer;                                   \
 479     __pthread_cleanup_push (&_buffer, (routine), (arg));
 480
 481 extern void __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
 482                                    int execute) attribute_hidden;
 483 # undef pthread_cleanup_pop
 484 # define pthread_cleanup_pop(execute) \
 485     __pthread_cleanup_pop (&_buffer, (execute)); }
 486 #endif
 487
 488 extern void __pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
 489                                           void (*routine) (void *), void *arg);
 490 extern void __pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
 491                                            int execute);
 492
 493 /* Old cleanup interfaces, still used in libc.so.  */
 494 extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
 495                                    void (*routine) (void *), void *arg);
 496 extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
 497                                   int execute);
 498 extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
 499                                          void (*routine) (void *), void *arg);
 500 extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
 501                                           int execute);
 502
 503 extern void __nptl_deallocate_tsd (void) attribute_hidden;
 504
 505 extern int __nptl_setxid (struct xid_command *cmdp) attribute_hidden;
 506
 507 #ifdef SHARED
 508 # define PTHREAD_STATIC_FN_REQUIRE(name)
 509 #else
 510 # define PTHREAD_STATIC_FN_REQUIRE(name) __asm (".globl " #name);
 511 #endif
 512
 513
 514 #ifndef __NR_set_robust_list
 515 /* XXX For the time being...  Once we can rely on the kernel headers
 516    having the definition remove these lines.  */
 517 # if defined __i386__
 518 #  define __NR_set_robust_list  311
 519 # elif defined __x86_64__
 520 #  define __NR_set_robust_list  273
 521 # endif
 522 #endif
 523
 524 #endif  /* pthreadP.h */