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