scheduler/pthread.c

   1 /*
   2  * pthread emulation for re-entrant libcs
   3  *
   4  * We can't use pthreads directly, so why not let libcs
   5  * that want pthreads use Wine's own threading instead...
   6  *
   7  * Copyright 1999 Ove Kåven
   8  * Copyright 2003 Alexandre Julliard
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  */
  24
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #ifndef HAVE_NPTL
  29
  30 struct _pthread_cleanup_buffer;
  31
  32 #include <assert.h>
  33 #include <errno.h>
  34 #include <stdlib.h>
  35 #include <signal.h>
  36 #include <setjmp.h>
  37 #ifdef HAVE_UNISTD_H
  38 # include <unistd.h>
  39 #endif
  40 #include <string.h>
  41 #include <sys/types.h>
  42 #ifdef HAVE_SYS_SOCKET_H
  43 # include <sys/socket.h>
  44 #endif
  45 #ifdef HAVE_SYS_MMAN_H
  46 #include <sys/mman.h>
  47 #endif
  48 #ifdef HAVE_NETINET_IN_H
  49 # include <netinet/in.h>
  50 #endif
  51 #ifdef HAVE_RESOLV_H
  52 # include <resolv.h>
  53 #endif
  54 #ifdef HAVE_VALGRIND_MEMCHECK_H
  55 #include <valgrind/memcheck.h>
  56 #endif
  57
  58 #include "wine/pthread.h"
  59
  60 #define P_OUTPUT(stuff) write(2,stuff,strlen(stuff))
  61
  62 #define PSTR(str) __ASM_NAME(#str)
  63
  64 static struct wine_pthread_functions funcs;
  65
  66 /* thread descriptor */
  67
  68 #define FIRST_KEY 0
  69 #define MAX_KEYS 16 /* libc6 doesn't use that many, but... */
  70 #define MAX_TSD  16
  71
  72 struct pthread_descr_struct
  73 {
  74     char               dummy[2048];
  75     int                thread_errno;
  76     int                thread_h_errno;
  77     int                cancel_state;
  78     int                cancel_type;
  79     struct __res_state res_state;
  80     const void        *key_data[MAX_KEYS];  /* for normal pthread keys */
  81     const void        *tsd_data[MAX_TSD];   /* for libc internal tsd variables */
  82 };
  83
  84 typedef struct pthread_descr_struct *pthread_descr;
  85
  86 static struct pthread_descr_struct initial_descr;
  87
  88 pthread_descr __pthread_thread_self(void)
  89 {
  90     struct pthread_descr_struct *descr;
  91     if (!funcs.ptr_get_thread_data) return &initial_descr;
  92     descr = funcs.ptr_get_thread_data();
  93     if (!descr) return &initial_descr;
  94     return descr;
  95 }
  96
  97 static int (*libc_uselocale)(int set);
  98 static int *libc_multiple_threads;
  99
 100 /***********************************************************************
 101  *           __errno_location/__error/__errno/___errno/__thr_errno
 102  *
 103  * Get the per-thread errno location.
 104  */
 105 int *__errno_location(void)                            /* Linux */
 106 {
 107     pthread_descr descr = __pthread_thread_self();
 108     return &descr->thread_errno;
 109 }
 110 int *__error(void)     { return __errno_location(); }  /* FreeBSD */
 111 int *__errno(void)     { return __errno_location(); }  /* NetBSD */
 112 int *___errno(void)    { return __errno_location(); }  /* Solaris */
 113 int *__thr_errno(void) { return __errno_location(); }  /* UnixWare */
 114
 115 /***********************************************************************
 116  *           __h_errno_location
 117  *
 118  * Get the per-thread h_errno location.
 119  */
 120 int *__h_errno_location(void)
 121 {
 122     pthread_descr descr = __pthread_thread_self();
 123     return &descr->thread_h_errno;
 124 }
 125
 126 struct __res_state *__res_state(void)
 127 {
 128     pthread_descr descr = __pthread_thread_self();
 129     return &descr->res_state;
 130 }
 131
 132 static inline void writejump( const char *symbol, void *dest )
 133 {
 134 #if defined(__GLIBC__) && defined(__i386__)
 135     unsigned char *addr = dlsym( RTLD_NEXT, symbol );
 136
 137     if (!addr) return;
 138
 139     /* write a relative jump at the function address */
 140     mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC|PROT_WRITE);
 141     addr[0] = 0xe9;
 142     *(int *)(addr+1) = (unsigned char *)dest - (addr + 5);
 143     mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC);
 144
 145 # ifdef HAVE_VALGRIND_MEMCHECK_H
 146     VALGRIND_DISCARD_TRANSLATIONS( addr, 5 );
 147 # endif
 148 #endif  /* __GLIBC__ && __i386__ */
 149 }
 150
 151 /***********************************************************************
 152  *           wine_pthread_init_process
 153  *
 154  * Initialization for a newly created process.
 155  */
 156 void wine_pthread_init_process( const struct wine_pthread_functions *functions )
 157 {
 158     memcpy( &funcs, functions, sizeof(funcs) );
 159     funcs.ptr_set_thread_data( &initial_descr );
 160     initial_descr.cancel_state = PTHREAD_CANCEL_ENABLE;
 161     initial_descr.cancel_type  = PTHREAD_CANCEL_ASYNCHRONOUS;
 162     writejump( "__errno_location", __errno_location );
 163     writejump( "__h_errno_location", __h_errno_location );
 164     writejump( "__res_state", __res_state );
 165     if (libc_uselocale) libc_uselocale( -1 /*LC_GLOBAL_LOCALE*/ );
 166 }
 167
 168
 169 /***********************************************************************
 170  *           wine_pthread_init_thread
 171  *
 172  * Initialization for a newly created thread.
 173  */
 174 void wine_pthread_init_thread(void)
 175 {
 176     if (funcs.ptr_set_thread_data)
 177     {
 178         struct pthread_descr_struct *descr = calloc( 1, sizeof(*descr) );
 179
 180         funcs.ptr_set_thread_data( descr );
 181         descr->cancel_state = PTHREAD_CANCEL_ENABLE;
 182         descr->cancel_type  = PTHREAD_CANCEL_ASYNCHRONOUS;
 183         if (libc_multiple_threads) *libc_multiple_threads = 1;
 184         if (libc_uselocale) libc_uselocale( -1 /*LC_GLOBAL_LOCALE*/ );
 185     }
 186     /* else it's the first thread, init will be done in wine_pthread_init_process */
 187 }
 188
 189
 190 /* Currently this probably works only for glibc2,
 191  * which checks for the presence of double-underscore-prepended
 192  * pthread primitives, and use them if available.
 193  * If they are not available, the libc defaults to
 194  * non-threadsafe operation (not good). */
 195
 196 #if defined(__GLIBC__) || defined(__FreeBSD__)
 197
 198 #ifndef __USE_UNIX98
 199 #define __USE_UNIX98
 200 #endif
 201
 202 #include <pthread.h>
 203
 204 /* adapt as necessary (a construct like this is used in glibc sources) */
 205 #define strong_alias(orig, alias) \
 206  asm(".globl " PSTR(alias) "\n" \
 207      "\t.set " PSTR(alias) "," PSTR(orig))
 208
 209 struct fork_block;
 210
 211 /* pthread functions redirection */
 212
 213 struct pthread_functions
 214 {
 215   pid_t (*ptr_pthread_fork) (struct fork_block *);
 216   int (*ptr_pthread_attr_destroy) (pthread_attr_t *);
 217   int (*ptr___pthread_attr_init_2_0) (pthread_attr_t *);
 218   int (*ptr___pthread_attr_init_2_1) (pthread_attr_t *);
 219   int (*ptr_pthread_attr_getdetachstate) (const pthread_attr_t *, int *);
 220   int (*ptr_pthread_attr_setdetachstate) (pthread_attr_t *, int);
 221   int (*ptr_pthread_attr_getinheritsched) (const pthread_attr_t *, int *);
 222   int (*ptr_pthread_attr_setinheritsched) (pthread_attr_t *, int);
 223   int (*ptr_pthread_attr_getschedparam) (const pthread_attr_t *, struct sched_param *);
 224   int (*ptr_pthread_attr_setschedparam) (pthread_attr_t *, const struct sched_param *);
 225   int (*ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *);
 226   int (*ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int);
 227   int (*ptr_pthread_attr_getscope) (const pthread_attr_t *, int *);
 228   int (*ptr_pthread_attr_setscope) (pthread_attr_t *, int);
 229   int (*ptr_pthread_condattr_destroy) (pthread_condattr_t *);
 230   int (*ptr_pthread_condattr_init) (pthread_condattr_t *);
 231   int (*ptr___pthread_cond_broadcast) (pthread_cond_t *);
 232   int (*ptr___pthread_cond_destroy) (pthread_cond_t *);
 233   int (*ptr___pthread_cond_init) (pthread_cond_t *, const pthread_condattr_t *);
 234   int (*ptr___pthread_cond_signal) (pthread_cond_t *);
 235   int (*ptr___pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *);
 236   int (*ptr_pthread_equal) (pthread_t, pthread_t);
 237   void (*ptr___pthread_exit) (void *);
 238   int (*ptr_pthread_getschedparam) (pthread_t, int *, struct sched_param *);
 239   int (*ptr_pthread_setschedparam) (pthread_t, int, const struct sched_param *);
 240   int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *);
 241   int (*ptr_pthread_mutex_init) (pthread_mutex_t *, const pthread_mutexattr_t *);
 242   int (*ptr_pthread_mutex_lock) (pthread_mutex_t *);
 243   int (*ptr_pthread_mutex_trylock) (pthread_mutex_t *);
 244   int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *);
 245   pthread_t (*ptr_pthread_self) (void);
 246   int (*ptr_pthread_setcancelstate) (int, int *);
 247   int (*ptr_pthread_setcanceltype) (int, int *);
 248   void (*ptr_pthread_do_exit) (void *retval, char *currentframe);
 249   void (*ptr_pthread_cleanup_upto) (jmp_buf target, char *targetframe);
 250   pthread_descr (*ptr_pthread_thread_self) (void);
 251   int (*ptr_pthread_internal_tsd_set) (int key, const void *pointer);
 252   void * (*ptr_pthread_internal_tsd_get) (int key);
 253   void ** __attribute__ ((__const__)) (*ptr_pthread_internal_tsd_address) (int key);
 254   int (*ptr_pthread_sigaction) (int sig, const struct sigaction * act, struct sigaction *oact);
 255   int (*ptr_pthread_sigwait) (const sigset_t *set, int *sig);
 256   int (*ptr_pthread_raise) (int sig);
 257   int (*ptr___pthread_cond_timedwait) (pthread_cond_t *, pthread_mutex_t *, const struct timespec *);
 258   void (*ptr__pthread_cleanup_push) (struct _pthread_cleanup_buffer * buffer, void (*routine)(void *), void * arg);
 259   void (*ptr__pthread_cleanup_pop) (struct _pthread_cleanup_buffer * buffer, int execute);
 260 };
 261
 262 static pid_t (*libc_fork)(void);
 263 static int (*libc_sigaction)(int signum, const struct sigaction *act, struct sigaction *oldact);
 264 static int *(*libc_pthread_init)( const struct pthread_functions *funcs );
 265
 266 static struct pthread_functions libc_pthread_functions;
 267
 268 strong_alias(__pthread_thread_self, pthread_thread_self);
 269
 270 /* redefine this to prevent libpthread from overriding our function pointers */
 271 int *__libc_pthread_init( const struct pthread_functions *funcs )
 272 {
 273     return libc_multiple_threads;
 274 }
 275
 276 typedef struct _wine_cleanup {
 277   void (*routine)(void *);
 278   void *arg;
 279 } *wine_cleanup;
 280
 281 int pthread_create(pthread_t* thread, const pthread_attr_t* attr, void*
 282         (*start_routine)(void *), void* arg)
 283 {
 284     assert( funcs.ptr_pthread_create );
 285     return funcs.ptr_pthread_create( thread, attr, start_routine, arg );
 286 }
 287
 288 int pthread_cancel(pthread_t thread)
 289 {
 290     assert( funcs.ptr_pthread_cancel );
 291     return funcs.ptr_pthread_cancel( thread );
 292 }
 293
 294 int pthread_join(pthread_t thread, void **value_ptr)
 295 {
 296     assert( funcs.ptr_pthread_join );
 297     return funcs.ptr_pthread_join( thread, value_ptr );
 298 }
 299
 300 int pthread_detach(pthread_t thread)
 301 {
 302     assert( funcs.ptr_pthread_detach );
 303     return funcs.ptr_pthread_detach( thread );
 304 }
 305
 306 /* FIXME: we have no equivalents in win32 for the policys */
 307 /* so just keep this as a stub */
 308 int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy)
 309 {
 310   P_OUTPUT("FIXME:pthread_attr_setschedpolicy\n");
 311   return 0;
 312 }
 313
 314 /* FIXME: no win32 equivalent for scope */
 315 int pthread_attr_setscope(pthread_attr_t *attr, int scope)
 316 {
 317   P_OUTPUT("FIXME:pthread_attr_setscope\n");
 318   return 0; /* return success */
 319 }
 320
 321 /* FIXME: no win32 equivalent for schedule param */
 322 int pthread_attr_setschedparam(pthread_attr_t *attr,
 323     const struct sched_param *param)
 324 {
 325   P_OUTPUT("FIXME:pthread_attr_setschedparam\n");
 326   return 0; /* return success */
 327 }
 328
 329 /* FIXME */
 330 int pthread_attr_setstack(pthread_attr_t *attr, void *addr, size_t size)
 331 {
 332   return 0; /* return success */
 333 }
 334
 335 int __pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
 336 {
 337     static pthread_once_t the_once = PTHREAD_ONCE_INIT;
 338     long once_now;
 339
 340     memcpy(&once_now,&the_once,sizeof(once_now));
 341     if (interlocked_cmpxchg((long*)once_control, once_now+1, once_now) == once_now)
 342         (*init_routine)();
 343     return 0;
 344 }
 345 strong_alias(__pthread_once, pthread_once);
 346
 347 void __pthread_kill_other_threads_np(void)
 348 {
 349     /* we don't need to do anything here */
 350 }
 351 strong_alias(__pthread_kill_other_threads_np, pthread_kill_other_threads_np);
 352
 353 /***** atfork *****/
 354
 355 #define MAX_ATFORK 8  /* libc doesn't need that many anyway */
 356
 357 static pthread_mutex_t atfork_mutex = PTHREAD_MUTEX_INITIALIZER;
 358
 359 typedef void (*atfork_handler)();
 360 static atfork_handler atfork_prepare[MAX_ATFORK];
 361 static atfork_handler atfork_parent[MAX_ATFORK];
 362 static atfork_handler atfork_child[MAX_ATFORK];
 363 static int atfork_count;
 364
 365 int __pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void))
 366 {
 367     pthread_mutex_lock( &atfork_mutex );
 368     assert( atfork_count < MAX_ATFORK );
 369     atfork_prepare[atfork_count] = prepare;
 370     atfork_parent[atfork_count] = parent;
 371     atfork_child[atfork_count] = child;
 372     atfork_count++;
 373     pthread_mutex_unlock( &atfork_mutex );
 374     return 0;
 375 }
 376 strong_alias(__pthread_atfork, pthread_atfork);
 377
 378 pid_t __fork(void)
 379 {
 380     pid_t pid;
 381     int i;
 382
 383     if (!libc_fork)
 384     {
 385         libc_fork = dlsym( RTLD_NEXT, "fork" );
 386         assert( libc_fork );
 387     }
 388     pthread_mutex_lock( &atfork_mutex );
 389     /* prepare handlers are called in reverse insertion order */
 390     for (i = atfork_count - 1; i >= 0; i--) if (atfork_prepare[i]) atfork_prepare[i]();
 391     if (!(pid = libc_fork()))
 392     {
 393         pthread_mutex_init( &atfork_mutex, NULL );
 394         for (i = 0; i < atfork_count; i++) if (atfork_child[i]) atfork_child[i]();
 395     }
 396     else
 397     {
 398         for (i = 0; i < atfork_count; i++) if (atfork_parent[i]) atfork_parent[i]();
 399         pthread_mutex_unlock( &atfork_mutex );
 400     }
 401     return pid;
 402 }
 403 strong_alias(__fork, fork);
 404
 405 /***** MUTEXES *****/
 406
 407 int __pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr)
 408 {
 409     if (!funcs.ptr_pthread_mutex_init) return 0;
 410     return funcs.ptr_pthread_mutex_init( mutex, mutexattr );
 411 }
 412 strong_alias(__pthread_mutex_init, pthread_mutex_init);
 413
 414 int __pthread_mutex_lock(pthread_mutex_t *mutex)
 415 {
 416     if (!funcs.ptr_pthread_mutex_lock) return 0;
 417     return funcs.ptr_pthread_mutex_lock( mutex );
 418 }
 419 strong_alias(__pthread_mutex_lock, pthread_mutex_lock);
 420
 421 int __pthread_mutex_trylock(pthread_mutex_t *mutex)
 422 {
 423     if (!funcs.ptr_pthread_mutex_trylock) return 0;
 424     return funcs.ptr_pthread_mutex_trylock( mutex );
 425 }
 426 strong_alias(__pthread_mutex_trylock, pthread_mutex_trylock);
 427
 428 int __pthread_mutex_unlock(pthread_mutex_t *mutex)
 429 {
 430     if (!funcs.ptr_pthread_mutex_unlock) return 0;
 431     return funcs.ptr_pthread_mutex_unlock( mutex );
 432 }
 433 strong_alias(__pthread_mutex_unlock, pthread_mutex_unlock);
 434
 435 int __pthread_mutex_destroy(pthread_mutex_t *mutex)
 436 {
 437     if (!funcs.ptr_pthread_mutex_destroy) return 0;
 438     return funcs.ptr_pthread_mutex_destroy( mutex );
 439 }
 440 strong_alias(__pthread_mutex_destroy, pthread_mutex_destroy);
 441
 442
 443 /***** MUTEX ATTRIBUTES *****/
 444 /* just dummies, since critical sections are always recursive */
 445
 446 int __pthread_mutexattr_init(pthread_mutexattr_t *attr)
 447 {
 448   return 0;
 449 }
 450 strong_alias(__pthread_mutexattr_init, pthread_mutexattr_init);
 451
 452 int __pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
 453 {
 454   return 0;
 455 }
 456 strong_alias(__pthread_mutexattr_destroy, pthread_mutexattr_destroy);
 457
 458 int __pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind)
 459 {
 460   return 0;
 461 }
 462 strong_alias(__pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np);
 463
 464 int __pthread_mutexattr_getkind_np(pthread_mutexattr_t *attr, int *kind)
 465 {
 466   *kind = PTHREAD_MUTEX_RECURSIVE;
 467   return 0;
 468 }
 469 strong_alias(__pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np);
 470
 471 int __pthread_mutexattr_settype(pthread_mutexattr_t *attr, int kind)
 472 {
 473   return 0;
 474 }
 475 strong_alias(__pthread_mutexattr_settype, pthread_mutexattr_settype);
 476
 477 int __pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *kind)
 478 {
 479   *kind = PTHREAD_MUTEX_RECURSIVE;
 480   return 0;
 481 }
 482 strong_alias(__pthread_mutexattr_gettype, pthread_mutexattr_gettype);
 483
 484
 485 /***** THREAD-SPECIFIC VARIABLES (KEYS) *****/
 486
 487 int __pthread_key_create(pthread_key_t *key, void (*destr_function)(void *))
 488 {
 489     static long keycnt = FIRST_KEY;
 490     *key = interlocked_xchg_add(&keycnt, 1);
 491     return 0;
 492 }
 493 strong_alias(__pthread_key_create, pthread_key_create);
 494
 495 int __pthread_key_delete(pthread_key_t key)
 496 {
 497   return 0;
 498 }
 499 strong_alias(__pthread_key_delete, pthread_key_delete);
 500
 501 int __pthread_setspecific(pthread_key_t key, const void *pointer)
 502 {
 503     pthread_descr descr = __pthread_thread_self();
 504     descr->key_data[key] = pointer;
 505     return 0;
 506 }
 507 strong_alias(__pthread_setspecific, pthread_setspecific);
 508
 509 void *__pthread_getspecific(pthread_key_t key)
 510 {
 511     pthread_descr descr = __pthread_thread_self();
 512     return (void *)descr->key_data[key];
 513 }
 514 strong_alias(__pthread_getspecific, pthread_getspecific);
 515
 516 static int pthread_internal_tsd_set( int key, const void *pointer )
 517 {
 518     pthread_descr descr = __pthread_thread_self();
 519     descr->tsd_data[key] = pointer;
 520     return 0;
 521 }
 522 int (*__libc_internal_tsd_set)(int, const void *) = pthread_internal_tsd_set;
 523
 524 static void *pthread_internal_tsd_get( int key )
 525 {
 526     pthread_descr descr = __pthread_thread_self();
 527     return (void *)descr->tsd_data[key];
 528 }
 529 void* (*__libc_internal_tsd_get)(int) = pthread_internal_tsd_get;
 530
 531 static void ** __attribute__((const)) pthread_internal_tsd_address( int key )
 532 {
 533     pthread_descr descr = __pthread_thread_self();
 534     return (void **)&descr->tsd_data[key];
 535 }
 536 void** (*__libc_internal_tsd_address)(int) = pthread_internal_tsd_address;
 537
 538 /***** "EXCEPTION" FRAMES *****/
 539 /* not implemented right now */
 540
 541 void _pthread_cleanup_push(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
 542 {
 543   ((wine_cleanup)buffer)->routine = routine;
 544   ((wine_cleanup)buffer)->arg = arg;
 545 }
 546
 547 void _pthread_cleanup_pop(struct _pthread_cleanup_buffer *buffer, int execute)
 548 {
 549   if (execute) (*(((wine_cleanup)buffer)->routine))(((wine_cleanup)buffer)->arg);
 550 }
 551
 552 void _pthread_cleanup_push_defer(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
 553 {
 554   _pthread_cleanup_push(buffer, routine, arg);
 555 }
 556
 557 void _pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer *buffer, int execute)
 558 {
 559   _pthread_cleanup_pop(buffer, execute);
 560 }
 561
 562 void __pthread_cleanup_upto(jmp_buf target, char *frame)
 563 {
 564     /* FIXME */
 565 }
 566
 567 /***** CONDITIONS *****/
 568
 569 int __pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *cond_attr)
 570 {
 571     if (!funcs.ptr_pthread_cond_init) return 0;
 572     return funcs.ptr_pthread_cond_init(cond, cond_attr);
 573 }
 574 strong_alias(__pthread_cond_init, pthread_cond_init);
 575
 576 int __pthread_cond_destroy(pthread_cond_t *cond)
 577 {
 578     if (!funcs.ptr_pthread_cond_destroy) return 0;
 579     return funcs.ptr_pthread_cond_destroy(cond);
 580 }
 581 strong_alias(__pthread_cond_destroy, pthread_cond_destroy);
 582
 583 int __pthread_cond_signal(pthread_cond_t *cond)
 584 {
 585     if (!funcs.ptr_pthread_cond_signal) return 0;
 586     return funcs.ptr_pthread_cond_signal(cond);
 587 }
 588 strong_alias(__pthread_cond_signal, pthread_cond_signal);
 589
 590 int __pthread_cond_broadcast(pthread_cond_t *cond)
 591 {
 592     if (!funcs.ptr_pthread_cond_broadcast) return 0;
 593     return funcs.ptr_pthread_cond_broadcast(cond);
 594 }
 595 strong_alias(__pthread_cond_broadcast, pthread_cond_broadcast);
 596
 597 int __pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 598 {
 599     if (!funcs.ptr_pthread_cond_wait) return 0;
 600     return funcs.ptr_pthread_cond_wait(cond, mutex);
 601 }
 602 strong_alias(__pthread_cond_wait, pthread_cond_wait);
 603
 604 int __pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime)
 605 {
 606     if (!funcs.ptr_pthread_cond_timedwait) return 0;
 607     return funcs.ptr_pthread_cond_timedwait(cond, mutex, abstime);
 608 }
 609 strong_alias(__pthread_cond_timedwait, pthread_cond_timedwait);
 610
 611 /**** CONDITION ATTRIBUTES *****/
 612 /* not implemented right now */
 613
 614 int pthread_condattr_init(pthread_condattr_t *attr)
 615 {
 616   return 0;
 617 }
 618
 619 int pthread_condattr_destroy(pthread_condattr_t *attr)
 620 {
 621   return 0;
 622 }
 623
 624 /***** READ-WRITE LOCKS *****/
 625
 626 int __pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *rwlock_attr)
 627 {
 628     assert( funcs.ptr_pthread_rwlock_init );
 629     return funcs.ptr_pthread_rwlock_init( rwlock, rwlock_attr );
 630 }
 631 strong_alias(__pthread_rwlock_init, pthread_rwlock_init);
 632
 633 int __pthread_rwlock_destroy(pthread_rwlock_t *rwlock)
 634 {
 635     assert( funcs.ptr_pthread_rwlock_destroy );
 636     return funcs.ptr_pthread_rwlock_destroy( rwlock );
 637 }
 638 strong_alias(__pthread_rwlock_destroy, pthread_rwlock_destroy);
 639
 640 int __pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
 641 {
 642     if (!funcs.ptr_pthread_rwlock_rdlock) return 0;
 643     return funcs.ptr_pthread_rwlock_rdlock( rwlock );
 644 }
 645 strong_alias(__pthread_rwlock_rdlock, pthread_rwlock_rdlock);
 646
 647 int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
 648 {
 649     assert( funcs.ptr_pthread_rwlock_tryrdlock );
 650     return funcs.ptr_pthread_rwlock_tryrdlock( rwlock );
 651 }
 652 strong_alias(__pthread_rwlock_tryrdlock, pthread_rwlock_tryrdlock);
 653
 654 int __pthread_rwlock_wrlock(pthread_rwlock_t *rwlock)
 655 {
 656     assert( funcs.ptr_pthread_rwlock_wrlock );
 657     return funcs.ptr_pthread_rwlock_wrlock( rwlock );
 658 }
 659 strong_alias(__pthread_rwlock_wrlock, pthread_rwlock_wrlock);
 660
 661 int __pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock)
 662 {
 663     assert( funcs.ptr_pthread_rwlock_trywrlock );
 664     return funcs.ptr_pthread_rwlock_trywrlock( rwlock );
 665 }
 666 strong_alias(__pthread_rwlock_trywrlock, pthread_rwlock_trywrlock);
 667
 668 int __pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
 669 {
 670     if (!funcs.ptr_pthread_rwlock_unlock) return 0;
 671     return funcs.ptr_pthread_rwlock_unlock( rwlock );
 672 }
 673 strong_alias(__pthread_rwlock_unlock, pthread_rwlock_unlock);
 674
 675 /**** READ-WRITE LOCK ATTRIBUTES *****/
 676 /* not implemented right now */
 677
 678 int pthread_rwlockattr_init(pthread_rwlockattr_t *attr)
 679 {
 680   return 0;
 681 }
 682
 683 int __pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
 684 {
 685   return 0;
 686 }
 687 strong_alias(__pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
 688
 689 int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t *attr, int *pref)
 690 {
 691   *pref = 0;
 692   return 0;
 693 }
 694
 695 int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *attr, int pref)
 696 {
 697   return 0;
 698 }
 699
 700 /***** MISC *****/
 701
 702 pthread_t pthread_self(void)
 703 {
 704     assert( funcs.ptr_pthread_self );
 705     return funcs.ptr_pthread_self();
 706 }
 707
 708 int pthread_equal(pthread_t thread1, pthread_t thread2)
 709 {
 710     assert( funcs.ptr_pthread_equal );
 711     return funcs.ptr_pthread_equal( thread1, thread2 );
 712 }
 713
 714 void __pthread_do_exit(void *retval, char *currentframe)
 715 {
 716     assert( funcs.ptr_pthread_exit );
 717     return funcs.ptr_pthread_exit( retval, currentframe );
 718 }
 719
 720 void __pthread_exit(void *retval)
 721 {
 722     __pthread_do_exit( retval, NULL );
 723 }
 724 strong_alias(__pthread_exit, pthread_exit);
 725
 726 int pthread_setcancelstate(int state, int *oldstate)
 727 {
 728     pthread_descr descr = __pthread_thread_self();
 729     if (oldstate) *oldstate = descr->cancel_state;
 730     descr->cancel_state = state;
 731     return 0;
 732 }
 733
 734 int pthread_setcanceltype(int type, int *oldtype)
 735 {
 736     pthread_descr descr = __pthread_thread_self();
 737     if (oldtype) *oldtype = descr->cancel_type;
 738     descr->cancel_type = type;
 739     return 0;
 740 }
 741
 742 /***** ANTI-OVERRIDES *****/
 743 /* pthreads tries to override these, point them back to libc */
 744
 745 int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact)
 746 {
 747     if (!libc_sigaction)
 748     {
 749         libc_sigaction = dlsym( RTLD_NEXT, "sigaction" );
 750         assert( libc_sigaction );
 751     }
 752     return libc_sigaction(signum, act, oldact);
 753 }
 754
 755 void __pthread_initialize(void)
 756 {
 757     static int done;
 758
 759     if (!done)
 760     {
 761         done = 1;
 762         libc_fork = dlsym( RTLD_NEXT, "fork" );
 763         libc_sigaction = dlsym( RTLD_NEXT, "sigaction" );
 764         libc_uselocale = dlsym( RTLD_NEXT, "uselocale" );
 765         libc_pthread_init = dlsym( RTLD_NEXT, "__libc_pthread_init" );
 766         if (libc_pthread_init) libc_multiple_threads = libc_pthread_init( &libc_pthread_functions );
 767     }
 768 }
 769 DECL_GLOBAL_CONSTRUCTOR(init) { __pthread_initialize(); }
 770
 771 static struct pthread_functions libc_pthread_functions =
 772 {
 773     NULL,                          /* ptr_pthread_fork */
 774     NULL, /* FIXME */              /* ptr_pthread_attr_destroy */
 775     NULL, /* FIXME */              /* ptr___pthread_attr_init_2_0 */
 776     NULL, /* FIXME */              /* ptr___pthread_attr_init_2_1 */
 777     NULL, /* FIXME */              /* ptr_pthread_attr_getdetachstate */
 778     NULL, /* FIXME */              /* ptr_pthread_attr_setdetachstate */
 779     NULL, /* FIXME */              /* ptr_pthread_attr_getinheritsched */
 780     NULL, /* FIXME */              /* ptr_pthread_attr_setinheritsched */
 781     NULL, /* FIXME */              /* ptr_pthread_attr_getschedparam */
 782     pthread_attr_setschedparam,    /* ptr_pthread_attr_setschedparam */
 783     NULL, /* FIXME */              /* ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *); */
 784     NULL, /* FIXME */              /* ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int); */
 785     NULL, /* FIXME */              /* ptr_pthread_attr_getscope) (const pthread_attr_t *, int *); */
 786     NULL, /* FIXME */              /* ptr_pthread_attr_setscope) (pthread_attr_t *, int); */
 787     pthread_condattr_destroy,      /* ptr_pthread_condattr_destroy */
 788     pthread_condattr_init,         /* ptr_pthread_condattr_init */
 789     __pthread_cond_broadcast,      /* ptr___pthread_cond_broadcast */
 790     __pthread_cond_destroy,        /* ptr___pthread_cond_destroy */
 791     __pthread_cond_init,           /* ptr___pthread_cond_init */
 792     __pthread_cond_signal,         /* ptr___pthread_cond_signal */
 793     __pthread_cond_wait,           /* ptr___pthread_cond_wait */
 794     pthread_equal,                 /* ptr_pthread_equal */
 795     __pthread_exit,                /* ptr___pthread_exit */
 796     NULL, /* FIXME */              /* ptr_pthread_getschedparam */
 797     NULL, /* FIXME */              /* ptr_pthread_setschedparam */
 798     __pthread_mutex_destroy,       /* ptr_pthread_mutex_destroy */
 799     __pthread_mutex_init,          /* ptr_pthread_mutex_init */
 800     __pthread_mutex_lock,          /* ptr_pthread_mutex_lock */
 801     __pthread_mutex_trylock,       /* ptr_pthread_mutex_trylock */
 802     __pthread_mutex_unlock,        /* ptr_pthread_mutex_unlock */
 803     pthread_self,                  /* ptr_pthread_self */
 804     pthread_setcancelstate,        /* ptr_pthread_setcancelstate */
 805     pthread_setcanceltype,         /* ptr_pthread_setcanceltype */
 806     __pthread_do_exit,             /* ptr_pthread_do_exit */
 807     __pthread_cleanup_upto,        /* ptr_pthread_cleanup_upto */
 808     __pthread_thread_self,         /* ptr_pthread_thread_self */
 809     pthread_internal_tsd_set,      /* ptr_pthread_internal_tsd_set */
 810     pthread_internal_tsd_get,      /* ptr_pthread_internal_tsd_get */
 811     pthread_internal_tsd_address,  /* ptr_pthread_internal_tsd_address */
 812     NULL,                          /* ptr_pthread_sigaction */
 813     NULL,                          /* ptr_pthread_sigwait */
 814     NULL,                          /* ptr_pthread_raise */
 815     __pthread_cond_timedwait,      /* ptr___pthread_cond_timedwait */
 816     _pthread_cleanup_push,         /* ptr__pthread_cleanup_push */
 817     _pthread_cleanup_pop           /* ptr__pthread_cleanup_pop */
 818 };
 819
 820 #endif /* __GLIBC__ || __FREEBSD__ */
 821
 822 #else  /* HAVE_NPTL */
 823
 824 void wine_pthread_init_process( const struct wine_pthread_functions *functions )
 825 {
 826 }
 827
 828 void wine_pthread_init_thread(void)
 829 {
 830 }
 831
 832 #endif  /* HAVE_NPTL */