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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 | /* libc-internal interface for mutex locks. NPTL version. Copyright (C) 1996-2003, 2005, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; see the file COPYING.LIB. If not, see <http://www.gnu.org/licenses/>. */ #ifndef _BITS_LIBC_LOCK_H #define _BITS_LIBC_LOCK_H 1 #include <bits/initspin.h> #include <pthread.h> #define __need_NULL #include <stddef.h> /* Fortunately Linux now has a mean to do locking which is realtime safe without the aid of the thread library. We also need no fancy options like error checking mutexes etc. We only need simple locks, maybe recursive. This can be easily and cheaply implemented using futexes. We will use them everywhere except in ld.so since ld.so might be used on old kernels with a different libc.so. */ #ifdef _LIBC # include <lowlevellock.h> # include <tls.h> #endif /* Mutex type. */ #if defined _LIBC || defined _IO_MTSAFE_IO # if (defined NOT_IN_libc && !defined IS_IN_libpthread) || !defined _LIBC typedef pthread_mutex_t __libc_lock_t; typedef struct { pthread_mutex_t mutex; } __libc_lock_recursive_t; # else typedef int __libc_lock_t; typedef struct { int lock; int cnt; void *owner; } __libc_lock_recursive_t; # endif typedef struct { pthread_mutex_t mutex; } __rtld_lock_recursive_t; # ifdef __USE_UNIX98 typedef pthread_rwlock_t __libc_rwlock_t; # else typedef struct __libc_rwlock_opaque__ __libc_rwlock_t; # endif #else typedef struct __libc_lock_opaque__ __libc_lock_t; typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t; typedef struct __libc_rwlock_opaque__ __libc_rwlock_t; #endif /* Type for key to thread-specific data. */ typedef pthread_key_t __libc_key_t; # define __libc_freeres_fn_section \ __attribute__ ((section ("__libc_freeres_fn"))) /* Define a lock variable NAME with storage class CLASS. The lock must be initialized with __libc_lock_init before it can be used (or define it with __libc_lock_define_initialized, below). Use `extern' for CLASS to declare a lock defined in another module. In public structure definitions you must use a pointer to the lock structure (i.e., NAME begins with a `*'), because its storage size will not be known outside of libc. */ #define __libc_lock_define(CLASS,NAME) \ CLASS __libc_lock_t NAME; #define __libc_rwlock_define(CLASS,NAME) \ CLASS __libc_rwlock_t NAME; #define __libc_lock_define_recursive(CLASS,NAME) \ CLASS __libc_lock_recursive_t NAME; #define __rtld_lock_define_recursive(CLASS,NAME) \ CLASS __rtld_lock_recursive_t NAME; /* Define an initialized lock variable NAME with storage class CLASS. For the C library we take a deeper look at the initializer. For this implementation all fields are initialized to zero. Therefore we don't initialize the variable which allows putting it into the BSS section. (Except on PA-RISC and other odd architectures, where initialized locks must be set to one due to the lack of normal atomic operations.) */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # if LLL_LOCK_INITIALIZER == 0 # define __libc_lock_define_initialized(CLASS,NAME) \ CLASS __libc_lock_t NAME; # else # define __libc_lock_define_initialized(CLASS,NAME) \ CLASS __libc_lock_t NAME = LLL_LOCK_INITIALIZER; # endif #else # if __LT_SPINLOCK_INIT == 0 # define __libc_lock_define_initialized(CLASS,NAME) \ CLASS __libc_lock_t NAME; # else # define __libc_lock_define_initialized(CLASS,NAME) \ CLASS __libc_lock_t NAME = PTHREAD_MUTEX_INITIALIZER; # endif #endif #define __libc_rwlock_define_initialized(CLASS,NAME) \ CLASS __libc_rwlock_t NAME = PTHREAD_RWLOCK_INITIALIZER; /* Define an initialized recursive lock variable NAME with storage class CLASS. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # if LLL_LOCK_INITIALIZER == 0 # define __libc_lock_define_initialized_recursive(CLASS,NAME) \ CLASS __libc_lock_recursive_t NAME; # else # define __libc_lock_define_initialized_recursive(CLASS,NAME) \ CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER; # endif # define _LIBC_LOCK_RECURSIVE_INITIALIZER \ { LLL_LOCK_INITIALIZER, 0, NULL } #else # define __libc_lock_define_initialized_recursive(CLASS,NAME) \ CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER; # define _LIBC_LOCK_RECURSIVE_INITIALIZER \ {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP} #endif #define __rtld_lock_define_initialized_recursive(CLASS,NAME) \ CLASS __rtld_lock_recursive_t NAME = _RTLD_LOCK_RECURSIVE_INITIALIZER; #define _RTLD_LOCK_RECURSIVE_INITIALIZER \ {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP} #define __rtld_lock_initialize(NAME) \ (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER) /* If we check for a weakly referenced symbol and then perform a normal jump to it te code generated for some platforms in case of PIC is unnecessarily slow. What would happen is that the function is first referenced as data and then it is called indirectly through the PLT. We can make this a direct jump. */ #ifdef __PIC__ # define __libc_maybe_call(FUNC, ARGS, ELSE) \ (__extension__ ({ __typeof (FUNC) *_fn = (FUNC); \ _fn != NULL ? (*_fn) ARGS : ELSE; })) #else # define __libc_maybe_call(FUNC, ARGS, ELSE) \ (FUNC != NULL ? FUNC ARGS : ELSE) #endif # define PTFAVAIL(NAME) (NAME != NULL) # define __libc_ptf_call(FUNC, ARGS, ELSE) \ __libc_maybe_call (FUNC, ARGS, ELSE) # define __libc_ptf_call_always(FUNC, ARGS) \ FUNC ARGS /* Initialize the named lock variable, leaving it in a consistent, unlocked state. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # define __libc_lock_init(NAME) ((void)((NAME) = LLL_LOCK_INITIALIZER)) #else # define __libc_lock_init(NAME) \ __libc_maybe_call (__pthread_mutex_init, (&(NAME), NULL), 0) #endif #if defined SHARED && !defined NOT_IN_libc /* ((NAME) = (__libc_rwlock_t) PTHREAD_RWLOCK_INITIALIZER, 0) is inefficient. */ # define __libc_rwlock_init(NAME) \ (__builtin_memset (&(NAME), '\0', sizeof (NAME)), 0) #else # define __libc_rwlock_init(NAME) \ __libc_maybe_call (__pthread_rwlock_init, (&(NAME), NULL), 0) #endif /* Same as last but this time we initialize a recursive mutex. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # define __libc_lock_init_recursive(NAME) \ ((NAME) = (__libc_lock_recursive_t) _LIBC_LOCK_RECURSIVE_INITIALIZER, 0) #else # define __libc_lock_init_recursive(NAME) \ do { \ if (__pthread_mutex_init != NULL) \ { \ pthread_mutexattr_t __attr; \ __pthread_mutexattr_init (&__attr); \ __pthread_mutexattr_settype (&__attr, PTHREAD_MUTEX_RECURSIVE_NP); \ __pthread_mutex_init (&(NAME).mutex, &__attr); \ __pthread_mutexattr_destroy (&__attr); \ } \ } while (0) #endif #define __rtld_lock_init_recursive(NAME) \ do { \ if (__pthread_mutex_init != NULL) \ { \ pthread_mutexattr_t __attr; \ __pthread_mutexattr_init (&__attr); \ __pthread_mutexattr_settype (&__attr, PTHREAD_MUTEX_RECURSIVE_NP); \ __pthread_mutex_init (&(NAME).mutex, &__attr); \ __pthread_mutexattr_destroy (&__attr); \ } \ } while (0) /* Finalize the named lock variable, which must be locked. It cannot be used again until __libc_lock_init is called again on it. This must be called on a lock variable before the containing storage is reused. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # define __libc_lock_fini(NAME) ((void) 0) #else # define __libc_lock_fini(NAME) \ __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0) #endif #if defined SHARED && !defined NOT_IN_libc # define __libc_rwlock_fini(NAME) ((void) 0) #else # define __libc_rwlock_fini(NAME) \ __libc_maybe_call (__pthread_rwlock_destroy, (&(NAME)), 0) #endif /* Finalize recursive named lock. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # define __libc_lock_fini_recursive(NAME) ((void) 0) #else # define __libc_lock_fini_recursive(NAME) \ __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0) #endif /* Lock the named lock variable. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # define __libc_lock_lock(NAME) \ ({ lll_lock (NAME, LLL_PRIVATE); 0; }) #else # define __libc_lock_lock(NAME) \ __libc_maybe_call (__pthread_mutex_lock, (&(NAME)), 0) #endif #define __libc_rwlock_rdlock(NAME) \ __libc_ptf_call (__pthread_rwlock_rdlock, (&(NAME)), 0) #define __libc_rwlock_wrlock(NAME) \ __libc_ptf_call (__pthread_rwlock_wrlock, (&(NAME)), 0) /* Lock the recursive named lock variable. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # define __libc_lock_lock_recursive(NAME) \ do { \ void *self = THREAD_SELF; \ if ((NAME).owner != self) \ { \ lll_lock ((NAME).lock, LLL_PRIVATE); \ (NAME).owner = self; \ } \ ++(NAME).cnt; \ } while (0) #else # define __libc_lock_lock_recursive(NAME) \ __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0) #endif /* Try to lock the named lock variable. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # define __libc_lock_trylock(NAME) \ lll_trylock (NAME) #else # define __libc_lock_trylock(NAME) \ __libc_maybe_call (__pthread_mutex_trylock, (&(NAME)), 0) #endif #define __libc_rwlock_tryrdlock(NAME) \ __libc_maybe_call (__pthread_rwlock_tryrdlock, (&(NAME)), 0) #define __libc_rwlock_trywrlock(NAME) \ __libc_maybe_call (__pthread_rwlock_trywrlock, (&(NAME)), 0) /* Try to lock the recursive named lock variable. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # define __libc_lock_trylock_recursive(NAME) \ ({ \ int result = 0; \ void *self = THREAD_SELF; \ if ((NAME).owner != self) \ { \ if (lll_trylock ((NAME).lock) == 0) \ { \ (NAME).owner = self; \ (NAME).cnt = 1; \ } \ else \ result = EBUSY; \ } \ else \ ++(NAME).cnt; \ result; \ }) #else # define __libc_lock_trylock_recursive(NAME) \ __libc_maybe_call (__pthread_mutex_trylock, (&(NAME)), 0) #endif #define __rtld_lock_trylock_recursive(NAME) \ __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0) /* Unlock the named lock variable. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) # define __libc_lock_unlock(NAME) \ lll_unlock (NAME, LLL_PRIVATE) #else # define __libc_lock_unlock(NAME) \ __libc_maybe_call (__pthread_mutex_unlock, (&(NAME)), 0) #endif #define __libc_rwlock_unlock(NAME) \ __libc_ptf_call (__pthread_rwlock_unlock, (&(NAME)), 0) /* Unlock the recursive named lock variable. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) /* We do no error checking here. */ # define __libc_lock_unlock_recursive(NAME) \ do { \ if (--(NAME).cnt == 0) \ { \ (NAME).owner = NULL; \ lll_unlock ((NAME).lock, LLL_PRIVATE); \ } \ } while (0) #else # define __libc_lock_unlock_recursive(NAME) \ __libc_maybe_call (__pthread_mutex_unlock, (&(NAME)), 0) #endif #if defined _LIBC && defined SHARED # define __rtld_lock_default_lock_recursive(lock) \ ++((pthread_mutex_t *)(lock))->__data.__count; # define __rtld_lock_default_unlock_recursive(lock) \ --((pthread_mutex_t *)(lock))->__data.__count; # define __rtld_lock_lock_recursive(NAME) \ GL(dl_rtld_lock_recursive) (&(NAME).mutex) # define __rtld_lock_unlock_recursive(NAME) \ GL(dl_rtld_unlock_recursive) (&(NAME).mutex) #else # define __rtld_lock_lock_recursive(NAME) \ __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0) # define __rtld_lock_unlock_recursive(NAME) \ __libc_maybe_call (__pthread_mutex_unlock, (&(NAME).mutex), 0) #endif /* Define once control variable. */ #if PTHREAD_ONCE_INIT == 0 /* Special case for static variables where we can avoid the initialization if it is zero. */ # define __libc_once_define(CLASS, NAME) \ CLASS pthread_once_t NAME #else # define __libc_once_define(CLASS, NAME) \ CLASS pthread_once_t NAME = PTHREAD_ONCE_INIT #endif /* Call handler iff the first call. */ #define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \ do { \ if (PTFAVAIL (__pthread_once)) \ __libc_ptf_call_always (__pthread_once, (&(ONCE_CONTROL), \ INIT_FUNCTION)); \ else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) { \ INIT_FUNCTION (); \ (ONCE_CONTROL) |= 2; \ } \ } while (0) /* Note that for I/O cleanup handling we are using the old-style cancel handling. It does not have to be integrated with C++ snce no C++ code is called in the middle. The old-style handling is faster and the support is not going away. */ extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer, void (*routine) (void *), void *arg); extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer, int execute); extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer, void (*routine) (void *), void *arg); extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer, int execute); /* Start critical region with cleanup. */ #define __libc_cleanup_region_start(DOIT, FCT, ARG) \ { struct _pthread_cleanup_buffer _buffer; \ int _avail; \ if (DOIT) { \ _avail = PTFAVAIL (_pthread_cleanup_push_defer); \ if (_avail) { \ __libc_ptf_call_always (_pthread_cleanup_push_defer, (&_buffer, FCT, \ ARG)); \ } else { \ _buffer.__routine = (FCT); \ _buffer.__arg = (ARG); \ } \ } else { \ _avail = 0; \ } /* End critical region with cleanup. */ #define __libc_cleanup_region_end(DOIT) \ if (_avail) { \ __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\ } else if (DOIT) \ _buffer.__routine (_buffer.__arg); \ } /* Sometimes we have to exit the block in the middle. */ #define __libc_cleanup_end(DOIT) \ if (_avail) { \ __libc_ptf_call_always (_pthread_cleanup_pop_restore, (&_buffer, DOIT));\ } else if (DOIT) \ _buffer.__routine (_buffer.__arg) /* Normal cleanup handling, based on C cleanup attribute. */ static inline void __libc_cleanup_routine (struct __pthread_cleanup_frame *f) { if (f->__do_it) f->__cancel_routine (f->__cancel_arg); } #define __libc_cleanup_push(fct, arg) \ do { \ struct __pthread_cleanup_frame __clframe \ __attribute__ ((__cleanup__ (__libc_cleanup_routine))) \ = { .__cancel_routine = (fct), .__cancel_arg = (arg), \ .__do_it = 1 }; #define __libc_cleanup_pop(execute) \ __clframe.__do_it = (execute); \ } while (0) /* Create thread-specific key. */ #define __libc_key_create(KEY, DESTRUCTOR) \ __libc_ptf_call (__pthread_key_create, (KEY, DESTRUCTOR), 1) /* Get thread-specific data. */ #define __libc_getspecific(KEY) \ __libc_ptf_call (__pthread_getspecific, (KEY), NULL) /* Set thread-specific data. */ #define __libc_setspecific(KEY, VALUE) \ __libc_ptf_call (__pthread_setspecific, (KEY, VALUE), 0) /* Register handlers to execute before and after `fork'. Note that the last parameter is NULL. The handlers registered by the libc are never removed so this is OK. */ #define __libc_atfork(PREPARE, PARENT, CHILD) \ __register_atfork (PREPARE, PARENT, CHILD, NULL) extern int __register_atfork (void (*__prepare) (void), void (*__parent) (void), void (*__child) (void), void *__dso_handle); /* Functions that are used by this file and are internal to the GNU C library. */ extern int __pthread_mutex_init (pthread_mutex_t *__mutex, const pthread_mutexattr_t *__mutex_attr); extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex); extern int __pthread_mutex_trylock (pthread_mutex_t *__mutex); extern int __pthread_mutex_lock (pthread_mutex_t *__mutex); extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex); extern int __pthread_mutexattr_init (pthread_mutexattr_t *__attr); extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *__attr); extern int __pthread_mutexattr_settype (pthread_mutexattr_t *__attr, int __kind); #ifdef __USE_UNIX98 extern int __pthread_rwlock_init (pthread_rwlock_t *__rwlock, const pthread_rwlockattr_t *__attr); extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock); extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock); extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock); extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock); extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock); extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock); #endif extern int __pthread_key_create (pthread_key_t *__key, void (*__destr_function) (void *)); extern int __pthread_setspecific (pthread_key_t __key, const void *__pointer); extern void *__pthread_getspecific (pthread_key_t __key); extern int __pthread_once (pthread_once_t *__once_control, void (*__init_routine) (void)); extern int __pthread_atfork (void (*__prepare) (void), void (*__parent) (void), void (*__child) (void)); /* Make the pthread functions weak so that we can elide them from single-threaded processes. */ #ifndef __NO_WEAK_PTHREAD_ALIASES # ifdef weak_extern weak_extern (__pthread_mutex_init) weak_extern (__pthread_mutex_destroy) weak_extern (__pthread_mutex_lock) weak_extern (__pthread_mutex_trylock) weak_extern (__pthread_mutex_unlock) weak_extern (__pthread_mutexattr_init) weak_extern (__pthread_mutexattr_destroy) weak_extern (__pthread_mutexattr_settype) weak_extern (__pthread_rwlock_init) weak_extern (__pthread_rwlock_destroy) weak_extern (__pthread_rwlock_rdlock) weak_extern (__pthread_rwlock_tryrdlock) weak_extern (__pthread_rwlock_wrlock) weak_extern (__pthread_rwlock_trywrlock) weak_extern (__pthread_rwlock_unlock) weak_extern (__pthread_key_create) weak_extern (__pthread_setspecific) weak_extern (__pthread_getspecific) weak_extern (__pthread_once) //weak_extern (__pthread_initialize) weak_extern (__pthread_atfork) weak_extern (_pthread_cleanup_push_defer) weak_extern (_pthread_cleanup_pop_restore) weak_extern (pthread_setcancelstate) # else # pragma weak __pthread_mutex_init # pragma weak __pthread_mutex_destroy # pragma weak __pthread_mutex_lock # pragma weak __pthread_mutex_trylock # pragma weak __pthread_mutex_unlock # pragma weak __pthread_mutexattr_init # pragma weak __pthread_mutexattr_destroy # pragma weak __pthread_mutexattr_settype # pragma weak __pthread_rwlock_destroy # pragma weak __pthread_rwlock_rdlock # pragma weak __pthread_rwlock_tryrdlock # pragma weak __pthread_rwlock_wrlock # pragma weak __pthread_rwlock_trywrlock # pragma weak __pthread_rwlock_unlock # pragma weak __pthread_key_create # pragma weak __pthread_setspecific # pragma weak __pthread_getspecific # pragma weak __pthread_once //# pragma weak __pthread_initialize # pragma weak __pthread_atfork # pragma weak _pthread_cleanup_push_defer # pragma weak _pthread_cleanup_pop_restore # pragma weak pthread_setcancelstate # endif #endif #endif /* bits/libc-lock.h */ |