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