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_ARPA_NAMESER_H
  52 # include <arpa/nameser.h>
  53 #endif
  54 #ifdef HAVE_RESOLV_H
  55 # include <resolv.h>
  56 #endif
  57 #ifdef HAVE_VALGRIND_MEMCHECK_H
  58 #include <valgrind/memcheck.h>
  59 #endif
  60
  61 #include "wine/pthread.h"
  62
  63 #define P_OUTPUT(stuff) write(2,stuff,strlen(stuff))
  64
  65 #define PSTR(str) __ASM_NAME(#str)
  66
  67 static struct wine_pthread_functions funcs;
  68
  69 /* thread descriptor */
  70
  71 #define FIRST_KEY 0
  72 #define MAX_KEYS 16 /* libc6 doesn't use that many, but... */
  73 #define MAX_TSD  16
  74
  75 struct pthread_descr_struct
  76 {
  77     char               dummy[2048];
  78     int                thread_errno;
  79     int                thread_h_errno;
  80     int                cancel_state;
  81     int                cancel_type;
  82     struct __res_state res_state;
  83     const void        *key_data[MAX_KEYS];  /* for normal pthread keys */
  84     const void        *tsd_data[MAX_TSD];   /* for libc internal tsd variables */
  85 };
  86
  87 typedef struct pthread_descr_struct *pthread_descr;
  88
  89 static struct pthread_descr_struct initial_descr;
  90
  91 pthread_descr __pthread_thread_self(void)
  92 {
  93     struct pthread_descr_struct *descr;
  94     if (!funcs.ptr_get_thread_data) return &initial_descr;
  95     descr = funcs.ptr_get_thread_data();
  96     if (!descr) return &initial_descr;
  97     return descr;
  98 }
  99
 100 static int (*libc_uselocale)(int set);
 101 static int *libc_multiple_threads;
 102
 103 /***********************************************************************
 104  *           __errno_location/__error/__errno/___errno/__thr_errno
 105  *
 106  * Get the per-thread errno location.
 107  */
 108 int *__errno_location(void)                            /* Linux */
 109 {
 110     pthread_descr descr = __pthread_thread_self();
 111     return &descr->thread_errno;
 112 }
 113 int *__error(void)     { return __errno_location(); }  /* FreeBSD */
 114 int *__errno(void)     { return __errno_location(); }  /* NetBSD */
 115 int *___errno(void)    { return __errno_location(); }  /* Solaris */
 116 int *__thr_errno(void) { return __errno_location(); }  /* UnixWare */
 117
 118 /***********************************************************************
 119  *           __h_errno_location
 120  *
 121  * Get the per-thread h_errno location.
 122  */
 123 int *__h_errno_location(void)
 124 {
 125     pthread_descr descr = __pthread_thread_self();
 126     return &descr->thread_h_errno;
 127 }
 128
 129 struct __res_state *__res_state(void)
 130 {
 131     pthread_descr descr = __pthread_thread_self();
 132     return &descr->res_state;
 133 }
 134
 135 static inline void writejump( const char *symbol, void *dest )
 136 {
 137 #if defined(__GLIBC__) && defined(__i386__)
 138     unsigned char *addr = dlsym( RTLD_NEXT, symbol );
 139
 140     if (!addr) return;
 141
 142     /* write a relative jump at the function address */
 143     mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC|PROT_WRITE);
 144     addr[0] = 0xe9;
 145     *(int *)(addr+1) = (unsigned char *)dest - (addr + 5);
 146     mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC);
 147
 148 # ifdef HAVE_VALGRIND_MEMCHECK_H
 149     VALGRIND_DISCARD_TRANSLATIONS( addr, 5 );
 150 # endif
 151 #endif  /* __GLIBC__ && __i386__ */
 152 }
 153
 154 /***********************************************************************
 155  *           wine_pthread_init_process
 156  *
 157  * Initialization for a newly created process.
 158  */
 159 void wine_pthread_init_process( const struct wine_pthread_functions *functions )
 160 {
 161     memcpy( &funcs, functions, sizeof(funcs) );
 162     funcs.ptr_set_thread_data( &initial_descr );
 163 }
 164
 165
 166 /***********************************************************************
 167  *           wine_pthread_init_thread
 168  *
 169  * Initialization for a newly created thread.
 170  */
 171 void wine_pthread_init_thread(void)
 172 {
 173     struct pthread_descr_struct *descr;
 174
 175     if (funcs.ptr_set_thread_data)
 176     {
 177         descr = calloc( 1, sizeof(*descr) );
 178         funcs.ptr_set_thread_data( descr );
 179         if (libc_multiple_threads) *libc_multiple_threads = 1;
 180     }
 181     else  /* first thread */
 182     {
 183         descr = &initial_descr;
 184         writejump( "__errno_location", __errno_location );
 185         writejump( "__h_errno_location", __h_errno_location );
 186         writejump( "__res_state", __res_state );
 187     }
 188     descr->cancel_state = PTHREAD_CANCEL_ENABLE;
 189     descr->cancel_type  = PTHREAD_CANCEL_ASYNCHRONOUS;
 190     if (libc_uselocale) libc_uselocale( -1 /*LC_GLOBAL_LOCALE*/ );
 191 }
 192
 193
 194 /* Currently this probably works only for glibc2,
 195  * which checks for the presence of double-underscore-prepended
 196  * pthread primitives, and use them if available.
 197  * If they are not available, the libc defaults to
 198  * non-threadsafe operation (not good). */
 199
 200 #if defined(__GLIBC__) || defined(__FreeBSD__)
 201
 202 #ifndef __USE_UNIX98
 203 #define __USE_UNIX98
 204 #endif
 205
 206 #include <pthread.h>
 207
 208 /* adapt as necessary (a construct like this is used in glibc sources) */
 209 #define strong_alias(orig, alias) \
 210  asm(".globl " PSTR(alias) "\n" \
 211      "\t.set " PSTR(alias) "," PSTR(orig))
 212
 213 struct fork_block;
 214
 215 /* pthread functions redirection */
 216
 217 struct pthread_functions
 218 {
 219   pid_t (*ptr_pthread_fork) (struct fork_block *);
 220   int (*ptr_pthread_attr_destroy) (pthread_attr_t *);
 221   int (*ptr___pthread_attr_init_2_0) (pthread_attr_t *);
 222   int (*ptr___pthread_attr_init_2_1) (pthread_attr_t *);
 223   int (*ptr_pthread_attr_getdetachstate) (const pthread_attr_t *, int *);
 224   int (*ptr_pthread_attr_setdetachstate) (pthread_attr_t *, int);
 225   int (*ptr_pthread_attr_getinheritsched) (const pthread_attr_t *, int *);
 226   int (*ptr_pthread_attr_setinheritsched) (pthread_attr_t *, int);
 227   int (*ptr_pthread_attr_getschedparam) (const pthread_attr_t *, struct sched_param *);
 228   int (*ptr_pthread_attr_setschedparam) (pthread_attr_t *, const struct sched_param *);
 229   int (*ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *);
 230   int (*ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int);
 231   int (*ptr_pthread_attr_getscope) (const pthread_attr_t *, int *);
 232   int (*ptr_pthread_attr_setscope) (pthread_attr_t *, int);
 233   int (*ptr_pthread_condattr_destroy) (pthread_condattr_t *);
 234   int (*ptr_pthread_condattr_init) (pthread_condattr_t *);
 235   int (*ptr___pthread_cond_broadcast) (pthread_cond_t *);
 236   int (*ptr___pthread_cond_destroy) (pthread_cond_t *);
 237   int (*ptr___pthread_cond_init) (pthread_cond_t *, const pthread_condattr_t *);
 238   int (*ptr___pthread_cond_signal) (pthread_cond_t *);
 239   int (*ptr___pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *);
 240   int (*ptr_pthread_equal) (pthread_t, pthread_t);
 241   void (*ptr___pthread_exit) (void *);
 242   int (*ptr_pthread_getschedparam) (pthread_t, int *, struct sched_param *);
 243   int (*ptr_pthread_setschedparam) (pthread_t, int, const struct sched_param *);
 244   int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *);
 245   int (*ptr_pthread_mutex_init) (pthread_mutex_t *, const pthread_mutexattr_t *);
 246   int (*ptr_pthread_mutex_lock) (pthread_mutex_t *);
 247   int (*ptr_pthread_mutex_trylock) (pthread_mutex_t *);
 248   int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *);
 249   pthread_t (*ptr_pthread_self) (void);
 250   int (*ptr_pthread_setcancelstate) (int, int *);
 251   int (*ptr_pthread_setcanceltype) (int, int *);
 252   void (*ptr_pthread_do_exit) (void *retval, char *currentframe);
 253   void (*ptr_pthread_cleanup_upto) (jmp_buf target, char *targetframe);
 254   pthread_descr (*ptr_pthread_thread_self) (void);
 255   int (*ptr_pthread_internal_tsd_set) (int key, const void *pointer);
 256   void * (*ptr_pthread_internal_tsd_get) (int key);
 257   void ** __attribute__ ((__const__)) (*ptr_pthread_internal_tsd_address) (int key);
 258   int (*ptr_pthread_sigaction) (int sig, const struct sigaction * act, struct sigaction *oact);
 259   int (*ptr_pthread_sigwait) (const sigset_t *set, int *sig);
 260   int (*ptr_pthread_raise) (int sig);
 261   int (*ptr___pthread_cond_timedwait) (pthread_cond_t *, pthread_mutex_t *, const struct timespec *);
 262   void (*ptr__pthread_cleanup_push) (struct _pthread_cleanup_buffer * buffer, void (*routine)(void *), void * arg);
 263   void (*ptr__pthread_cleanup_pop) (struct _pthread_cleanup_buffer * buffer, int execute);
 264 };
 265
 266 static pid_t (*libc_fork)(void);
 267 static int (*libc_sigaction)(int signum, const struct sigaction *act, struct sigaction *oldact);
 268 static int *(*libc_pthread_init)( const struct pthread_functions *funcs );
 269
 270 static struct pthread_functions libc_pthread_functions;
 271
 272 strong_alias(__pthread_thread_self, pthread_thread_self);
 273
 274 /* redefine this to prevent libpthread from overriding our function pointers */
 275 int *__libc_pthread_init( const struct pthread_functions *funcs )
 276 {
 277     return libc_multiple_threads;
 278 }
 279
 280 typedef struct _wine_cleanup {
 281   void (*routine)(void *);
 282   void *arg;
 283 } *wine_cleanup;
 284
 285 int pthread_create(pthread_t* thread, const pthread_attr_t* attr, void*
 286         (*start_routine)(void *), void* arg)
 287 {
 288     assert( funcs.ptr_pthread_create );
 289     return funcs.ptr_pthread_create( thread, attr, start_routine, arg );
 290 }
 291
 292 int pthread_cancel(pthread_t thread)
 293 {
 294     assert( funcs.ptr_pthread_cancel );
 295     return funcs.ptr_pthread_cancel( thread );
 296 }
 297
 298 int pthread_join(pthread_t thread, void **value_ptr)
 299 {
 300     assert( funcs.ptr_pthread_join );
 301     return funcs.ptr_pthread_join( thread, value_ptr );
 302 }
 303
 304 int pthread_detach(pthread_t thread)
 305 {
 306     assert( funcs.ptr_pthread_detach );
 307     return funcs.ptr_pthread_detach( thread );
 308 }
 309
 310 /* FIXME: we have no equivalents in win32 for the policys */
 311 /* so just keep this as a stub */
 312 int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy)
 313 {
 314   P_OUTPUT("FIXME:pthread_attr_setschedpolicy\n");
 315   return 0;
 316 }
 317
 318 /* FIXME: no win32 equivalent for scope */
 319 int pthread_attr_setscope(pthread_attr_t *attr, int scope)
 320 {
 321   P_OUTPUT("FIXME:pthread_attr_setscope\n");
 322   return 0; /* return success */
 323 }
 324
 325 /* FIXME: no win32 equivalent for schedule param */
 326 int pthread_attr_setschedparam(pthread_attr_t *attr,
 327     const struct sched_param *param)
 328 {
 329   P_OUTPUT("FIXME:pthread_attr_setschedparam\n");
 330   return 0; /* return success */
 331 }
 332
 333 /* FIXME */
 334 int pthread_attr_setstack(pthread_attr_t *attr, void *addr, size_t size)
 335 {
 336   return 0; /* return success */
 337 }
 338
 339 int __pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
 340 {
 341     static pthread_once_t the_once = PTHREAD_ONCE_INIT;
 342     long once_now;
 343
 344     memcpy(&once_now,&the_once,sizeof(once_now));
 345     if (interlocked_cmpxchg((long*)once_control, once_now+1, once_now) == once_now)
 346         (*init_routine)();
 347     return 0;
 348 }
 349 strong_alias(__pthread_once, pthread_once);
 350
 351 void __pthread_kill_other_threads_np(void)
 352 {
 353     /* we don't need to do anything here */
 354 }
 355 strong_alias(__pthread_kill_other_threads_np, pthread_kill_other_threads_np);
 356
 357 /***** atfork *****/
 358
 359 #define MAX_ATFORK 8  /* libc doesn't need that many anyway */
 360
 361 static pthread_mutex_t atfork_mutex = PTHREAD_MUTEX_INITIALIZER;
 362
 363 typedef void (*atfork_handler)();
 364 static atfork_handler atfork_prepare[MAX_ATFORK];
 365 static atfork_handler atfork_parent[MAX_ATFORK];
 366 static atfork_handler atfork_child[MAX_ATFORK];
 367 static int atfork_count;
 368
 369 int __pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void))
 370 {
 371     pthread_mutex_lock( &atfork_mutex );
 372     assert( atfork_count < MAX_ATFORK );
 373     atfork_prepare[atfork_count] = prepare;
 374     atfork_parent[atfork_count] = parent;
 375     atfork_child[atfork_count] = child;
 376     atfork_count++;
 377     pthread_mutex_unlock( &atfork_mutex );
 378     return 0;
 379 }
 380 strong_alias(__pthread_atfork, pthread_atfork);
 381
 382 pid_t __fork(void)
 383 {
 384     pid_t pid;
 385     int i;
 386
 387     if (!libc_fork)
 388     {
 389         libc_fork = dlsym( RTLD_NEXT, "fork" );
 390         assert( libc_fork );
 391     }
 392     pthread_mutex_lock( &atfork_mutex );
 393     /* prepare handlers are called in reverse insertion order */
 394     for (i = atfork_count - 1; i >= 0; i--) if (atfork_prepare[i]) atfork_prepare[i]();
 395     if (!(pid = libc_fork()))
 396     {
 397         pthread_mutex_init( &atfork_mutex, NULL );
 398         for (i = 0; i < atfork_count; i++) if (atfork_child[i]) atfork_child[i]();
 399     }
 400     else
 401     {
 402         for (i = 0; i < atfork_count; i++) if (atfork_parent[i]) atfork_parent[i]();
 403         pthread_mutex_unlock( &atfork_mutex );
 404     }
 405     return pid;
 406 }
 407 strong_alias(__fork, fork);
 408
 409 /***** MUTEXES *****/
 410
 411 int __pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr)
 412 {
 413     if (!funcs.ptr_pthread_mutex_init) return 0;
 414     return funcs.ptr_pthread_mutex_init( mutex, mutexattr );
 415 }
 416 strong_alias(__pthread_mutex_init, pthread_mutex_init);
 417
 418 int __pthread_mutex_lock(pthread_mutex_t *mutex)
 419 {
 420     if (!funcs.ptr_pthread_mutex_lock) return 0;
 421     return funcs.ptr_pthread_mutex_lock( mutex );
 422 }
 423 strong_alias(__pthread_mutex_lock, pthread_mutex_lock);
 424
 425 int __pthread_mutex_trylock(pthread_mutex_t *mutex)
 426 {
 427     if (!funcs.ptr_pthread_mutex_trylock) return 0;
 428     return funcs.ptr_pthread_mutex_trylock( mutex );
 429 }
 430 strong_alias(__pthread_mutex_trylock, pthread_mutex_trylock);
 431
 432 int __pthread_mutex_unlock(pthread_mutex_t *mutex)
 433 {
 434     if (!funcs.ptr_pthread_mutex_unlock) return 0;
 435     return funcs.ptr_pthread_mutex_unlock( mutex );
 436 }
 437 strong_alias(__pthread_mutex_unlock, pthread_mutex_unlock);
 438
 439 int __pthread_mutex_destroy(pthread_mutex_t *mutex)
 440 {
 441     if (!funcs.ptr_pthread_mutex_destroy) return 0;
 442     return funcs.ptr_pthread_mutex_destroy( mutex );
 443 }
 444 strong_alias(__pthread_mutex_destroy, pthread_mutex_destroy);
 445
 446
 447 /***** MUTEX ATTRIBUTES *****/
 448 /* just dummies, since critical sections are always recursive */
 449
 450 int __pthread_mutexattr_init(pthread_mutexattr_t *attr)
 451 {
 452   return 0;
 453 }
 454 strong_alias(__pthread_mutexattr_init, pthread_mutexattr_init);
 455
 456 int __pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
 457 {
 458   return 0;
 459 }
 460 strong_alias(__pthread_mutexattr_destroy, pthread_mutexattr_destroy);
 461
 462 int __pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind)
 463 {
 464   return 0;
 465 }
 466 strong_alias(__pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np);
 467
 468 int __pthread_mutexattr_getkind_np(pthread_mutexattr_t *attr, int *kind)
 469 {
 470   *kind = PTHREAD_MUTEX_RECURSIVE;
 471   return 0;
 472 }
 473 strong_alias(__pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np);
 474
 475 int __pthread_mutexattr_settype(pthread_mutexattr_t *attr, int kind)
 476 {
 477   return 0;
 478 }
 479 strong_alias(__pthread_mutexattr_settype, pthread_mutexattr_settype);
 480
 481 int __pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *kind)
 482 {
 483   *kind = PTHREAD_MUTEX_RECURSIVE;
 484   return 0;
 485 }
 486 strong_alias(__pthread_mutexattr_gettype, pthread_mutexattr_gettype);
 487
 488
 489 /***** THREAD-SPECIFIC VARIABLES (KEYS) *****/
 490
 491 int __pthread_key_create(pthread_key_t *key, void (*destr_function)(void *))
 492 {
 493     static long keycnt = FIRST_KEY;
 494     *key = interlocked_xchg_add(&keycnt, 1);
 495     return 0;
 496 }
 497 strong_alias(__pthread_key_create, pthread_key_create);
 498
 499 int __pthread_key_delete(pthread_key_t key)
 500 {
 501   return 0;
 502 }
 503 strong_alias(__pthread_key_delete, pthread_key_delete);
 504
 505 int __pthread_setspecific(pthread_key_t key, const void *pointer)
 506 {
 507     pthread_descr descr = __pthread_thread_self();
 508     descr->key_data[key] = pointer;
 509     return 0;
 510 }
 511 strong_alias(__pthread_setspecific, pthread_setspecific);
 512
 513 void *__pthread_getspecific(pthread_key_t key)
 514 {
 515     pthread_descr descr = __pthread_thread_self();
 516     return (void *)descr->key_data[key];
 517 }
 518 strong_alias(__pthread_getspecific, pthread_getspecific);
 519
 520 static int pthread_internal_tsd_set( int key, const void *pointer )
 521 {
 522     pthread_descr descr = __pthread_thread_self();
 523     descr->tsd_data[key] = pointer;
 524     return 0;
 525 }
 526 int (*__libc_internal_tsd_set)(int, const void *) = pthread_internal_tsd_set;
 527
 528 static void *pthread_internal_tsd_get( int key )
 529 {
 530     pthread_descr descr = __pthread_thread_self();
 531     return (void *)descr->tsd_data[key];
 532 }
 533 void* (*__libc_internal_tsd_get)(int) = pthread_internal_tsd_get;
 534
 535 static void ** __attribute__((const)) pthread_internal_tsd_address( int key )
 536 {
 537     pthread_descr descr = __pthread_thread_self();
 538     return (void **)&descr->tsd_data[key];
 539 }
 540 void** (*__libc_internal_tsd_address)(int) = pthread_internal_tsd_address;
 541
 542 /***** "EXCEPTION" FRAMES *****/
 543 /* not implemented right now */
 544
 545 void _pthread_cleanup_push(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
 546 {
 547   ((wine_cleanup)buffer)->routine = routine;
 548   ((wine_cleanup)buffer)->arg = arg;
 549 }
 550
 551 void _pthread_cleanup_pop(struct _pthread_cleanup_buffer *buffer, int execute)
 552 {
 553   if (execute) (*(((wine_cleanup)buffer)->routine))(((wine_cleanup)buffer)->arg);
 554 }
 555
 556 void _pthread_cleanup_push_defer(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
 557 {
 558   _pthread_cleanup_push(buffer, routine, arg);
 559 }
 560
 561 void _pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer *buffer, int execute)
 562 {
 563   _pthread_cleanup_pop(buffer, execute);
 564 }
 565
 566 void __pthread_cleanup_upto(jmp_buf target, char *frame)
 567 {
 568     /* FIXME */
 569 }
 570
 571 /***** CONDITIONS *****/
 572
 573 int __pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *cond_attr)
 574 {
 575     if (!funcs.ptr_pthread_cond_init) return 0;
 576     return funcs.ptr_pthread_cond_init(cond, cond_attr);
 577 }
 578 strong_alias(__pthread_cond_init, pthread_cond_init);
 579
 580 int __pthread_cond_destroy(pthread_cond_t *cond)
 581 {
 582     if (!funcs.ptr_pthread_cond_destroy) return 0;
 583     return funcs.ptr_pthread_cond_destroy(cond);
 584 }
 585 strong_alias(__pthread_cond_destroy, pthread_cond_destroy);
 586
 587 int __pthread_cond_signal(pthread_cond_t *cond)
 588 {
 589     if (!funcs.ptr_pthread_cond_signal) return 0;
 590     return funcs.ptr_pthread_cond_signal(cond);
 591 }
 592 strong_alias(__pthread_cond_signal, pthread_cond_signal);
 593
 594 int __pthread_cond_broadcast(pthread_cond_t *cond)
 595 {
 596     if (!funcs.ptr_pthread_cond_broadcast) return 0;
 597     return funcs.ptr_pthread_cond_broadcast(cond);
 598 }
 599 strong_alias(__pthread_cond_broadcast, pthread_cond_broadcast);
 600
 601 int __pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 602 {
 603     if (!funcs.ptr_pthread_cond_wait) return 0;
 604     return funcs.ptr_pthread_cond_wait(cond, mutex);
 605 }
 606 strong_alias(__pthread_cond_wait, pthread_cond_wait);
 607
 608 int __pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime)
 609 {
 610     if (!funcs.ptr_pthread_cond_timedwait) return 0;
 611     return funcs.ptr_pthread_cond_timedwait(cond, mutex, abstime);
 612 }
 613 strong_alias(__pthread_cond_timedwait, pthread_cond_timedwait);
 614
 615 /**** CONDITION ATTRIBUTES *****/
 616 /* not implemented right now */
 617
 618 int pthread_condattr_init(pthread_condattr_t *attr)
 619 {
 620   return 0;
 621 }
 622
 623 int pthread_condattr_destroy(pthread_condattr_t *attr)
 624 {
 625   return 0;
 626 }
 627
 628 /***** READ-WRITE LOCKS *****/
 629
 630 int __pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *rwlock_attr)
 631 {
 632     assert( funcs.ptr_pthread_rwlock_init );
 633     return funcs.ptr_pthread_rwlock_init( rwlock, rwlock_attr );
 634 }
 635 strong_alias(__pthread_rwlock_init, pthread_rwlock_init);
 636
 637 int __pthread_rwlock_destroy(pthread_rwlock_t *rwlock)
 638 {
 639     assert( funcs.ptr_pthread_rwlock_destroy );
 640     return funcs.ptr_pthread_rwlock_destroy( rwlock );
 641 }
 642 strong_alias(__pthread_rwlock_destroy, pthread_rwlock_destroy);
 643
 644 int __pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
 645 {
 646     if (!funcs.ptr_pthread_rwlock_rdlock) return 0;
 647     return funcs.ptr_pthread_rwlock_rdlock( rwlock );
 648 }
 649 strong_alias(__pthread_rwlock_rdlock, pthread_rwlock_rdlock);
 650
 651 int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
 652 {
 653     assert( funcs.ptr_pthread_rwlock_tryrdlock );
 654     return funcs.ptr_pthread_rwlock_tryrdlock( rwlock );
 655 }
 656 strong_alias(__pthread_rwlock_tryrdlock, pthread_rwlock_tryrdlock);
 657
 658 int __pthread_rwlock_wrlock(pthread_rwlock_t *rwlock)
 659 {
 660     assert( funcs.ptr_pthread_rwlock_wrlock );
 661     return funcs.ptr_pthread_rwlock_wrlock( rwlock );
 662 }
 663 strong_alias(__pthread_rwlock_wrlock, pthread_rwlock_wrlock);
 664
 665 int __pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock)
 666 {
 667     assert( funcs.ptr_pthread_rwlock_trywrlock );
 668     return funcs.ptr_pthread_rwlock_trywrlock( rwlock );
 669 }
 670 strong_alias(__pthread_rwlock_trywrlock, pthread_rwlock_trywrlock);
 671
 672 int __pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
 673 {
 674     if (!funcs.ptr_pthread_rwlock_unlock) return 0;
 675     return funcs.ptr_pthread_rwlock_unlock( rwlock );
 676 }
 677 strong_alias(__pthread_rwlock_unlock, pthread_rwlock_unlock);
 678
 679 /**** READ-WRITE LOCK ATTRIBUTES *****/
 680 /* not implemented right now */
 681
 682 int pthread_rwlockattr_init(pthread_rwlockattr_t *attr)
 683 {
 684   return 0;
 685 }
 686
 687 int __pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
 688 {
 689   return 0;
 690 }
 691 strong_alias(__pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
 692
 693 int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t *attr, int *pref)
 694 {
 695   *pref = 0;
 696   return 0;
 697 }
 698
 699 int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *attr, int pref)
 700 {
 701   return 0;
 702 }
 703
 704 /***** MISC *****/
 705
 706 pthread_t pthread_self(void)
 707 {
 708     assert( funcs.ptr_pthread_self );
 709     return funcs.ptr_pthread_self();
 710 }
 711
 712 int pthread_equal(pthread_t thread1, pthread_t thread2)
 713 {
 714     assert( funcs.ptr_pthread_equal );
 715     return funcs.ptr_pthread_equal( thread1, thread2 );
 716 }
 717
 718 void __pthread_do_exit(void *retval, char *currentframe)
 719 {
 720     assert( funcs.ptr_pthread_exit );
 721     return funcs.ptr_pthread_exit( retval, currentframe );
 722 }
 723
 724 void __pthread_exit(void *retval)
 725 {
 726     __pthread_do_exit( retval, NULL );
 727 }
 728 strong_alias(__pthread_exit, pthread_exit);
 729
 730 int pthread_setcancelstate(int state, int *oldstate)
 731 {
 732     pthread_descr descr = __pthread_thread_self();
 733     if (oldstate) *oldstate = descr->cancel_state;
 734     descr->cancel_state = state;
 735     return 0;
 736 }
 737
 738 int pthread_setcanceltype(int type, int *oldtype)
 739 {
 740     pthread_descr descr = __pthread_thread_self();
 741     if (oldtype) *oldtype = descr->cancel_type;
 742     descr->cancel_type = type;
 743     return 0;
 744 }
 745
 746 /***** ANTI-OVERRIDES *****/
 747 /* pthreads tries to override these, point them back to libc */
 748
 749 int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact)
 750 {
 751     if (!libc_sigaction)
 752     {
 753         libc_sigaction = dlsym( RTLD_NEXT, "sigaction" );
 754         assert( libc_sigaction );
 755     }
 756     return libc_sigaction(signum, act, oldact);
 757 }
 758
 759 void __pthread_initialize(void)
 760 {
 761     static int done;
 762
 763     if (!done)
 764     {
 765         done = 1;
 766         libc_fork = dlsym( RTLD_NEXT, "fork" );
 767         libc_sigaction = dlsym( RTLD_NEXT, "sigaction" );
 768         libc_uselocale = dlsym( RTLD_NEXT, "uselocale" );
 769         libc_pthread_init = dlsym( RTLD_NEXT, "__libc_pthread_init" );
 770         if (libc_pthread_init) libc_multiple_threads = libc_pthread_init( &libc_pthread_functions );
 771     }
 772 }
 773 DECL_GLOBAL_CONSTRUCTOR(init) { __pthread_initialize(); }
 774
 775 static struct pthread_functions libc_pthread_functions =
 776 {
 777     NULL,                          /* ptr_pthread_fork */
 778     NULL, /* FIXME */              /* ptr_pthread_attr_destroy */
 779     NULL, /* FIXME */              /* ptr___pthread_attr_init_2_0 */
 780     NULL, /* FIXME */              /* ptr___pthread_attr_init_2_1 */
 781     NULL, /* FIXME */              /* ptr_pthread_attr_getdetachstate */
 782     NULL, /* FIXME */              /* ptr_pthread_attr_setdetachstate */
 783     NULL, /* FIXME */              /* ptr_pthread_attr_getinheritsched */
 784     NULL, /* FIXME */              /* ptr_pthread_attr_setinheritsched */
 785     NULL, /* FIXME */              /* ptr_pthread_attr_getschedparam */
 786     pthread_attr_setschedparam,    /* ptr_pthread_attr_setschedparam */
 787     NULL, /* FIXME */              /* ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *); */
 788     NULL, /* FIXME */              /* ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int); */
 789     NULL, /* FIXME */              /* ptr_pthread_attr_getscope) (const pthread_attr_t *, int *); */
 790     NULL, /* FIXME */              /* ptr_pthread_attr_setscope) (pthread_attr_t *, int); */
 791     pthread_condattr_destroy,      /* ptr_pthread_condattr_destroy */
 792     pthread_condattr_init,         /* ptr_pthread_condattr_init */
 793     __pthread_cond_broadcast,      /* ptr___pthread_cond_broadcast */
 794     __pthread_cond_destroy,        /* ptr___pthread_cond_destroy */
 795     __pthread_cond_init,           /* ptr___pthread_cond_init */
 796     __pthread_cond_signal,         /* ptr___pthread_cond_signal */
 797     __pthread_cond_wait,           /* ptr___pthread_cond_wait */
 798     pthread_equal,                 /* ptr_pthread_equal */
 799     __pthread_exit,                /* ptr___pthread_exit */
 800     NULL, /* FIXME */              /* ptr_pthread_getschedparam */
 801     NULL, /* FIXME */              /* ptr_pthread_setschedparam */
 802     __pthread_mutex_destroy,       /* ptr_pthread_mutex_destroy */
 803     __pthread_mutex_init,          /* ptr_pthread_mutex_init */
 804     __pthread_mutex_lock,          /* ptr_pthread_mutex_lock */
 805     __pthread_mutex_trylock,       /* ptr_pthread_mutex_trylock */
 806     __pthread_mutex_unlock,        /* ptr_pthread_mutex_unlock */
 807     pthread_self,                  /* ptr_pthread_self */
 808     pthread_setcancelstate,        /* ptr_pthread_setcancelstate */
 809     pthread_setcanceltype,         /* ptr_pthread_setcanceltype */
 810     __pthread_do_exit,             /* ptr_pthread_do_exit */
 811     __pthread_cleanup_upto,        /* ptr_pthread_cleanup_upto */
 812     __pthread_thread_self,         /* ptr_pthread_thread_self */
 813     pthread_internal_tsd_set,      /* ptr_pthread_internal_tsd_set */
 814     pthread_internal_tsd_get,      /* ptr_pthread_internal_tsd_get */
 815     pthread_internal_tsd_address,  /* ptr_pthread_internal_tsd_address */
 816     NULL,                          /* ptr_pthread_sigaction */
 817     NULL,                          /* ptr_pthread_sigwait */
 818     NULL,                          /* ptr_pthread_raise */
 819     __pthread_cond_timedwait,      /* ptr___pthread_cond_timedwait */
 820     _pthread_cleanup_push,         /* ptr__pthread_cleanup_push */
 821     _pthread_cleanup_pop           /* ptr__pthread_cleanup_pop */
 822 };
 823
 824 #endif /* __GLIBC__ || __FREEBSD__ */
 825
 826 #else  /* HAVE_NPTL */
 827
 828 void wine_pthread_init_process( const struct wine_pthread_functions *functions )
 829 {
 830 }
 831
 832 void wine_pthread_init_thread(void)
 833 {
 834 }
 835
 836 #endif  /* HAVE_NPTL */