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  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include "config.h"
  25 #include "wine/port.h"
  26
  27 #ifndef HAVE_NPTL
  28
  29 struct _pthread_cleanup_buffer;
  30
  31 #define _GNU_SOURCE /* we may need to override some GNU extensions */
  32
  33 #include <assert.h>
  34 #include <errno.h>
  35 #include <stdlib.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 "winbase.h"
  59 #include "thread.h"
  60 #include "winternl.h"
  61
  62 /* default errno before threading is initialized */
  63 static int *default_errno_location(void)
  64 {
  65     static int static_errno;
  66     return &static_errno;
  67 }
  68
  69 /* default h_errno before threading is initialized */
  70 static int *default_h_errno_location(void)
  71 {
  72     static int static_h_errno;
  73     return &static_h_errno;
  74 }
  75
  76 /* errno once threading is working */
  77 static int *thread_errno_location(void)
  78 {
  79     return &NtCurrentTeb()->thread_errno;
  80 }
  81
  82 /* h_errno once threading is working */
  83 static int *thread_h_errno_location(void)
  84 {
  85     return &NtCurrentTeb()->thread_h_errno;
  86 }
  87
  88 static int* (*errno_location_ptr)(void) = default_errno_location;
  89 static int* (*h_errno_location_ptr)(void) = default_h_errno_location;
  90
  91 /***********************************************************************
  92  *           __errno_location/__error/__errno/___errno/__thr_errno
  93  *
  94  * Get the per-thread errno location.
  95  */
  96 int *__errno_location(void) { return errno_location_ptr(); }  /* Linux */
  97 int *__error(void)          { return errno_location_ptr(); }  /* FreeBSD */
  98 int *__errno(void)          { return errno_location_ptr(); }  /* NetBSD */
  99 int *___errno(void)         { return errno_location_ptr(); }  /* Solaris */
 100 int *__thr_errno(void)      { return errno_location_ptr(); }  /* UnixWare */
 101
 102 /***********************************************************************
 103  *           __h_errno_location
 104  *
 105  * Get the per-thread h_errno location.
 106  */
 107 int *__h_errno_location(void)
 108 {
 109     return h_errno_location_ptr();
 110 }
 111
 112
 113 /* Currently this probably works only for glibc2,
 114  * which checks for the presence of double-underscore-prepended
 115  * pthread primitives, and use them if available.
 116  * If they are not available, the libc defaults to
 117  * non-threadsafe operation (not good). */
 118
 119 #if defined(__GLIBC__) || defined(__FreeBSD__)
 120
 121 #ifndef __USE_UNIX98
 122 #define __USE_UNIX98
 123 #endif
 124
 125 #include <pthread.h>
 126 #include <signal.h>
 127
 128 #define P_OUTPUT(stuff) write(2,stuff,strlen(stuff))
 129
 130 #define PSTR(str) __ASM_NAME(#str)
 131
 132 /* adapt as necessary (a construct like this is used in glibc sources) */
 133 #define strong_alias(orig, alias) \
 134  asm(".globl " PSTR(alias) "\n" \
 135      "\t.set " PSTR(alias) "," PSTR(orig))
 136
 137 /* thread descriptor */
 138
 139 #define FIRST_KEY 0
 140 #define MAX_KEYS 16 /* libc6 doesn't use that many, but... */
 141 #define MAX_TSD  16
 142
 143 struct fork_block;
 144
 145 struct pthread_descr_struct
 146 {
 147     char               dummy[2048];
 148     struct __res_state res_state;
 149     const void        *key_data[MAX_KEYS];  /* for normal pthread keys */
 150     const void        *tsd_data[MAX_TSD];   /* for libc internal tsd variables */
 151 };
 152
 153 typedef struct pthread_descr_struct *pthread_descr;
 154
 155 static struct pthread_descr_struct initial_descr;
 156
 157 pthread_descr __pthread_thread_self(void)
 158 {
 159     struct pthread_descr_struct *descr = NtCurrentTeb()->pthread_data;
 160     if (!descr) return &initial_descr;
 161     return descr;
 162 }
 163 strong_alias(__pthread_thread_self, pthread_thread_self);
 164
 165 /* pthread functions redirection */
 166
 167 struct pthread_functions
 168 {
 169   pid_t (*ptr_pthread_fork) (struct fork_block *);
 170   int (*ptr_pthread_attr_destroy) (pthread_attr_t *);
 171   int (*ptr___pthread_attr_init_2_0) (pthread_attr_t *);
 172   int (*ptr___pthread_attr_init_2_1) (pthread_attr_t *);
 173   int (*ptr_pthread_attr_getdetachstate) (const pthread_attr_t *, int *);
 174   int (*ptr_pthread_attr_setdetachstate) (pthread_attr_t *, int);
 175   int (*ptr_pthread_attr_getinheritsched) (const pthread_attr_t *, int *);
 176   int (*ptr_pthread_attr_setinheritsched) (pthread_attr_t *, int);
 177   int (*ptr_pthread_attr_getschedparam) (const pthread_attr_t *, struct sched_param *);
 178   int (*ptr_pthread_attr_setschedparam) (pthread_attr_t *, const struct sched_param *);
 179   int (*ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *);
 180   int (*ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int);
 181   int (*ptr_pthread_attr_getscope) (const pthread_attr_t *, int *);
 182   int (*ptr_pthread_attr_setscope) (pthread_attr_t *, int);
 183   int (*ptr_pthread_condattr_destroy) (pthread_condattr_t *);
 184   int (*ptr_pthread_condattr_init) (pthread_condattr_t *);
 185   int (*ptr___pthread_cond_broadcast) (pthread_cond_t *);
 186   int (*ptr___pthread_cond_destroy) (pthread_cond_t *);
 187   int (*ptr___pthread_cond_init) (pthread_cond_t *, const pthread_condattr_t *);
 188   int (*ptr___pthread_cond_signal) (pthread_cond_t *);
 189   int (*ptr___pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *);
 190   int (*ptr_pthread_equal) (pthread_t, pthread_t);
 191   void (*ptr___pthread_exit) (void *);
 192   int (*ptr_pthread_getschedparam) (pthread_t, int *, struct sched_param *);
 193   int (*ptr_pthread_setschedparam) (pthread_t, int, const struct sched_param *);
 194   int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *);
 195   int (*ptr_pthread_mutex_init) (pthread_mutex_t *, const pthread_mutexattr_t *);
 196   int (*ptr_pthread_mutex_lock) (pthread_mutex_t *);
 197   int (*ptr_pthread_mutex_trylock) (pthread_mutex_t *);
 198   int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *);
 199   pthread_t (*ptr_pthread_self) (void);
 200   int (*ptr_pthread_setcancelstate) (int, int *);
 201   int (*ptr_pthread_setcanceltype) (int, int *);
 202   void (*ptr_pthread_do_exit) (void *retval, char *currentframe);
 203   void (*ptr_pthread_cleanup_upto) (jmp_buf target, char *targetframe);
 204   pthread_descr (*ptr_pthread_thread_self) (void);
 205   int (*ptr_pthread_internal_tsd_set) (int key, const void *pointer);
 206   void * (*ptr_pthread_internal_tsd_get) (int key);
 207   void ** __attribute__ ((__const__)) (*ptr_pthread_internal_tsd_address) (int key);
 208   int (*ptr_pthread_sigaction) (int sig, const struct sigaction * act, struct sigaction *oact);
 209   int (*ptr_pthread_sigwait) (const sigset_t *set, int *sig);
 210   int (*ptr_pthread_raise) (int sig);
 211 };
 212
 213 static struct pthread_functions wine_pthread_functions;
 214 static int init_done;
 215
 216 static pid_t (*libc_fork)(void);
 217 static int (*libc_sigaction)(int signum, const struct sigaction *act, struct sigaction *oldact);
 218 static int (*libc_uselocale)(int set);
 219 static int *(*libc_pthread_init)( const struct pthread_functions *funcs );
 220 static int *libc_multiple_threads;
 221
 222 void PTHREAD_init_done(void)
 223 {
 224     init_done = 1;
 225     if (!libc_fork) libc_fork = dlsym( RTLD_NEXT, "fork" );
 226     if (!libc_sigaction) libc_sigaction = dlsym( RTLD_NEXT, "sigaction" );
 227 }
 228
 229 struct __res_state *__res_state(void)
 230 {
 231     pthread_descr descr = __pthread_thread_self();
 232     return &descr->res_state;
 233 }
 234
 235 static inline void writejump( const char *symbol, void *dest )
 236 {
 237 #if defined(__GLIBC__) && defined(__i386__)
 238     unsigned char *addr = dlsym( RTLD_NEXT, symbol );
 239
 240     if (!addr) return;
 241
 242     /* write a relative jump at the function address */
 243     mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC|PROT_WRITE);
 244     addr[0] = 0xe9;
 245     *(int *)(addr+1) = (unsigned char *)dest - (addr + 5);
 246     mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC);
 247
 248 # ifdef HAVE_VALGRIND_MEMCHECK_H
 249     VALGRIND_DISCARD_TRANSLATIONS( addr, 5 );
 250 # endif
 251 #endif  /* __GLIBC__ && __i386__ */
 252 }
 253
 254 /***********************************************************************
 255  *           PTHREAD_init_thread
 256  *
 257  * Initialization for a newly created thread.
 258  */
 259 void PTHREAD_init_thread(void)
 260 {
 261     static int first = 1;
 262
 263     if (first)
 264     {
 265         first = 0;
 266         NtCurrentTeb()->pthread_data = &initial_descr;
 267         errno_location_ptr = thread_errno_location;
 268         h_errno_location_ptr = thread_h_errno_location;
 269         libc_uselocale = dlsym( RTLD_NEXT, "uselocale" );
 270         libc_pthread_init = dlsym( RTLD_NEXT, "__libc_pthread_init" );
 271         if (libc_pthread_init) libc_multiple_threads = libc_pthread_init( &wine_pthread_functions );
 272         writejump( "__errno_location", thread_errno_location );
 273         writejump( "__h_errno_location", thread_h_errno_location );
 274         writejump( "__res_state", __res_state );
 275     }
 276     else
 277     {
 278         struct pthread_descr_struct *descr = calloc( 1, sizeof(*descr) );
 279         NtCurrentTeb()->pthread_data = descr;
 280         if (libc_multiple_threads) *libc_multiple_threads = 1;
 281     }
 282     if (libc_uselocale) libc_uselocale( -1 /*LC_GLOBAL_LOCALE*/ );
 283 }
 284
 285 /* redefine this to prevent libpthread from overriding our function pointers */
 286 int *__libc_pthread_init( const struct pthread_functions *funcs )
 287 {
 288     return libc_multiple_threads;
 289 }
 290
 291 /* NOTE: This is a truly extremely incredibly ugly hack!
 292  * But it does seem to work... */
 293
 294 /* assume that pthread_mutex_t has room for at least one pointer,
 295  * and hope that the users of pthread_mutex_t considers it opaque
 296  * (never checks what's in it)
 297  * also: assume that static initializer sets pointer to NULL
 298  */
 299 typedef struct
 300 {
 301 #ifdef __GLIBC__
 302   int reserved;
 303 #endif
 304   CRITICAL_SECTION *critsect;
 305 } *wine_mutex;
 306
 307 /* see wine_mutex above for comments */
 308 typedef struct {
 309   RTL_RWLOCK *lock;
 310 } *wine_rwlock;
 311
 312 typedef struct _wine_cleanup {
 313   void (*routine)(void *);
 314   void *arg;
 315 } *wine_cleanup;
 316
 317 void __pthread_initialize(void)
 318 {
 319 }
 320
 321 struct pthread_thread_init {
 322          void* (*start_routine)(void*);
 323          void* arg;
 324 };
 325
 326 static DWORD CALLBACK pthread_thread_start(LPVOID data)
 327 {
 328   struct pthread_thread_init init = *(struct pthread_thread_init*)data;
 329   HeapFree(GetProcessHeap(),0,data);
 330   return (DWORD)init.start_routine(init.arg);
 331 }
 332
 333 int pthread_create(pthread_t* thread, const pthread_attr_t* attr, void*
 334         (*start_routine)(void *), void* arg)
 335 {
 336   HANDLE hThread;
 337   struct pthread_thread_init* idata = HeapAlloc(GetProcessHeap(), 0,
 338                 sizeof(struct pthread_thread_init));
 339
 340   idata->start_routine = start_routine;
 341   idata->arg = arg;
 342   hThread = CreateThread( NULL, 0, pthread_thread_start, idata, 0,
 343                           (LPDWORD)thread);
 344
 345   if(hThread)
 346     CloseHandle(hThread);
 347   else
 348   {
 349     HeapFree(GetProcessHeap(),0,idata); /* free idata struct on failure */
 350     return EAGAIN;
 351   }
 352
 353   return 0;
 354 }
 355
 356 int pthread_cancel(pthread_t thread)
 357 {
 358   HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, FALSE, (DWORD)thread);
 359
 360   if(!TerminateThread(hThread, 0))
 361   {
 362     CloseHandle(hThread);
 363     return EINVAL;      /* return error */
 364   }
 365
 366   CloseHandle(hThread);
 367
 368   return 0;             /* return success */
 369 }
 370
 371 int pthread_join(pthread_t thread, void **value_ptr)
 372 {
 373   HANDLE hThread = OpenThread(THREAD_ALL_ACCESS, FALSE, (DWORD)thread);
 374
 375   WaitForSingleObject(hThread, INFINITE);
 376   if(!GetExitCodeThread(hThread, (LPDWORD)value_ptr))
 377   {
 378     CloseHandle(hThread);
 379     return EINVAL; /* FIXME: make this more correctly match */
 380   }                /* windows errors */
 381
 382   CloseHandle(hThread);
 383   return 0;
 384 }
 385
 386 /*FIXME: not sure what to do with this one... */
 387 int pthread_detach(pthread_t thread)
 388 {
 389   P_OUTPUT("FIXME:pthread_detach\n");
 390   return 0;
 391 }
 392
 393 /* FIXME: we have no equivalents in win32 for the policys */
 394 /* so just keep this as a stub */
 395 int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy)
 396 {
 397   P_OUTPUT("FIXME:pthread_attr_setschedpolicy\n");
 398   return 0;
 399 }
 400
 401 /* FIXME: no win32 equivalent for scope */
 402 int pthread_attr_setscope(pthread_attr_t *attr, int scope)
 403 {
 404   P_OUTPUT("FIXME:pthread_attr_setscope\n");
 405   return 0; /* return success */
 406 }
 407
 408 /* FIXME: no win32 equivalent for schedule param */
 409 int pthread_attr_setschedparam(pthread_attr_t *attr,
 410     const struct sched_param *param)
 411 {
 412   P_OUTPUT("FIXME:pthread_attr_setschedparam\n");
 413   return 0; /* return success */
 414 }
 415
 416 int __pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
 417 {
 418   static pthread_once_t the_once = PTHREAD_ONCE_INIT;
 419   LONG once_now;
 420
 421   memcpy(&once_now,&the_once,sizeof(once_now));
 422   if (InterlockedCompareExchange((LONG*)once_control, once_now+1, once_now) == once_now)
 423     (*init_routine)();
 424   return 0;
 425 }
 426 strong_alias(__pthread_once, pthread_once);
 427
 428 void __pthread_kill_other_threads_np(void)
 429 {
 430     /* we don't need to do anything here */
 431 }
 432 strong_alias(__pthread_kill_other_threads_np, pthread_kill_other_threads_np);
 433
 434 /***** atfork *****/
 435
 436 #define MAX_ATFORK 8  /* libc doesn't need that many anyway */
 437
 438 static CRITICAL_SECTION atfork_section;
 439 static CRITICAL_SECTION_DEBUG critsect_debug =
 440 {
 441     0, 0, &atfork_section,
 442     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
 443       0, 0, { 0, (DWORD)(__FILE__ ": atfork_section") }
 444 };
 445 static CRITICAL_SECTION atfork_section = { &critsect_debug, -1, 0, 0, 0, 0 };
 446
 447 typedef void (*atfork_handler)();
 448 static atfork_handler atfork_prepare[MAX_ATFORK];
 449 static atfork_handler atfork_parent[MAX_ATFORK];
 450 static atfork_handler atfork_child[MAX_ATFORK];
 451 static int atfork_count;
 452
 453 int __pthread_atfork(void (*prepare)(void),
 454                      void (*parent)(void),
 455                      void (*child)(void))
 456 {
 457     if (init_done) RtlEnterCriticalSection( &atfork_section );
 458     assert( atfork_count < MAX_ATFORK );
 459     atfork_prepare[atfork_count] = prepare;
 460     atfork_parent[atfork_count] = parent;
 461     atfork_child[atfork_count] = child;
 462     atfork_count++;
 463     if (init_done) RtlLeaveCriticalSection( &atfork_section );
 464     return 0;
 465 }
 466 strong_alias(__pthread_atfork, pthread_atfork);
 467
 468 pid_t __fork(void)
 469 {
 470     pid_t pid;
 471     int i;
 472
 473     if (!libc_fork)
 474     {
 475         libc_fork = dlsym( RTLD_NEXT, "fork" );
 476         assert( libc_fork );
 477     }
 478     RtlEnterCriticalSection( &atfork_section );
 479     /* prepare handlers are called in reverse insertion order */
 480     for (i = atfork_count - 1; i >= 0; i--) if (atfork_prepare[i]) atfork_prepare[i]();
 481     if (!(pid = libc_fork()))
 482     {
 483         RtlInitializeCriticalSection( &atfork_section );
 484         for (i = 0; i < atfork_count; i++) if (atfork_child[i]) atfork_child[i]();
 485     }
 486     else
 487     {
 488         for (i = 0; i < atfork_count; i++) if (atfork_parent[i]) atfork_parent[i]();
 489         RtlLeaveCriticalSection( &atfork_section );
 490     }
 491     return pid;
 492 }
 493 strong_alias(__fork, fork);
 494
 495 /***** MUTEXES *****/
 496
 497 int __pthread_mutex_init(pthread_mutex_t *mutex,
 498                         const pthread_mutexattr_t *mutexattr)
 499 {
 500   /* glibc has a tendency to initialize mutexes very often, even
 501      in situations where they are not really used later on.
 502
 503      As for us, initializing a mutex is very expensive, we postpone
 504      the real initialization until the time the mutex is first used. */
 505
 506   ((wine_mutex)mutex)->critsect = NULL;
 507   return 0;
 508 }
 509 strong_alias(__pthread_mutex_init, pthread_mutex_init);
 510
 511 static void mutex_real_init( pthread_mutex_t *mutex )
 512 {
 513   CRITICAL_SECTION *critsect = HeapAlloc(GetProcessHeap(), 0, sizeof(CRITICAL_SECTION));
 514   RtlInitializeCriticalSection(critsect);
 515
 516   if (InterlockedCompareExchangePointer((void**)&(((wine_mutex)mutex)->critsect),critsect,NULL) != NULL) {
 517     /* too late, some other thread already did it */
 518     RtlDeleteCriticalSection(critsect);
 519     HeapFree(GetProcessHeap(), 0, critsect);
 520   }
 521 }
 522
 523 int __pthread_mutex_lock(pthread_mutex_t *mutex)
 524 {
 525   if (!init_done) return 0;
 526   if (!((wine_mutex)mutex)->critsect)
 527     mutex_real_init( mutex );
 528
 529   RtlEnterCriticalSection(((wine_mutex)mutex)->critsect);
 530   return 0;
 531 }
 532 strong_alias(__pthread_mutex_lock, pthread_mutex_lock);
 533
 534 int __pthread_mutex_trylock(pthread_mutex_t *mutex)
 535 {
 536   if (!init_done) return 0;
 537   if (!((wine_mutex)mutex)->critsect)
 538     mutex_real_init( mutex );
 539
 540   if (!RtlTryEnterCriticalSection(((wine_mutex)mutex)->critsect)) {
 541     errno = EBUSY;
 542     return -1;
 543   }
 544   return 0;
 545 }
 546 strong_alias(__pthread_mutex_trylock, pthread_mutex_trylock);
 547
 548 int __pthread_mutex_unlock(pthread_mutex_t *mutex)
 549 {
 550   if (!((wine_mutex)mutex)->critsect) return 0;
 551   RtlLeaveCriticalSection(((wine_mutex)mutex)->critsect);
 552   return 0;
 553 }
 554 strong_alias(__pthread_mutex_unlock, pthread_mutex_unlock);
 555
 556 int __pthread_mutex_destroy(pthread_mutex_t *mutex)
 557 {
 558   if (!((wine_mutex)mutex)->critsect) return 0;
 559   if (((wine_mutex)mutex)->critsect->RecursionCount) {
 560 #if 0 /* there seems to be a bug in libc6 that makes this a bad idea */
 561     return EBUSY;
 562 #else
 563     while (((wine_mutex)mutex)->critsect->RecursionCount)
 564       RtlLeaveCriticalSection(((wine_mutex)mutex)->critsect);
 565 #endif
 566   }
 567   RtlDeleteCriticalSection(((wine_mutex)mutex)->critsect);
 568   HeapFree(GetProcessHeap(), 0, ((wine_mutex)mutex)->critsect);
 569   ((wine_mutex)mutex)->critsect = NULL;
 570   return 0;
 571 }
 572 strong_alias(__pthread_mutex_destroy, pthread_mutex_destroy);
 573
 574
 575 /***** MUTEX ATTRIBUTES *****/
 576 /* just dummies, since critical sections are always recursive */
 577
 578 int __pthread_mutexattr_init(pthread_mutexattr_t *attr)
 579 {
 580   return 0;
 581 }
 582 strong_alias(__pthread_mutexattr_init, pthread_mutexattr_init);
 583
 584 int __pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
 585 {
 586   return 0;
 587 }
 588 strong_alias(__pthread_mutexattr_destroy, pthread_mutexattr_destroy);
 589
 590 int __pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind)
 591 {
 592   return 0;
 593 }
 594 strong_alias(__pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np);
 595
 596 int __pthread_mutexattr_getkind_np(pthread_mutexattr_t *attr, int *kind)
 597 {
 598   *kind = PTHREAD_MUTEX_RECURSIVE;
 599   return 0;
 600 }
 601 strong_alias(__pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np);
 602
 603 int __pthread_mutexattr_settype(pthread_mutexattr_t *attr, int kind)
 604 {
 605   return 0;
 606 }
 607 strong_alias(__pthread_mutexattr_settype, pthread_mutexattr_settype);
 608
 609 int __pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *kind)
 610 {
 611   *kind = PTHREAD_MUTEX_RECURSIVE;
 612   return 0;
 613 }
 614 strong_alias(__pthread_mutexattr_gettype, pthread_mutexattr_gettype);
 615
 616
 617 /***** THREAD-SPECIFIC VARIABLES (KEYS) *****/
 618
 619 int __pthread_key_create(pthread_key_t *key, void (*destr_function)(void *))
 620 {
 621   static LONG keycnt = FIRST_KEY;
 622   *key = InterlockedExchangeAdd(&keycnt, 1);
 623   return 0;
 624 }
 625 strong_alias(__pthread_key_create, pthread_key_create);
 626
 627 int __pthread_key_delete(pthread_key_t key)
 628 {
 629   return 0;
 630 }
 631 strong_alias(__pthread_key_delete, pthread_key_delete);
 632
 633 int __pthread_setspecific(pthread_key_t key, const void *pointer)
 634 {
 635     pthread_descr descr = __pthread_thread_self();
 636     descr->key_data[key] = pointer;
 637     return 0;
 638 }
 639 strong_alias(__pthread_setspecific, pthread_setspecific);
 640
 641 void *__pthread_getspecific(pthread_key_t key)
 642 {
 643     pthread_descr descr = __pthread_thread_self();
 644     return (void *)descr->key_data[key];
 645 }
 646 strong_alias(__pthread_getspecific, pthread_getspecific);
 647
 648 /* these are not exported, they are only used in the pthread_functions structure */
 649
 650 static int pthread_internal_tsd_set( int key, const void *pointer )
 651 {
 652     pthread_descr descr = __pthread_thread_self();
 653     descr->tsd_data[key] = pointer;
 654     return 0;
 655 }
 656
 657 static void *pthread_internal_tsd_get( int key )
 658 {
 659     pthread_descr descr = __pthread_thread_self();
 660     return (void *)descr->tsd_data[key];
 661 }
 662
 663 static void ** __attribute__((const)) pthread_internal_tsd_address( int key )
 664 {
 665     pthread_descr descr = __pthread_thread_self();
 666     return (void **)&descr->tsd_data[key];
 667 }
 668
 669 /***** "EXCEPTION" FRAMES *****/
 670 /* not implemented right now */
 671
 672 void _pthread_cleanup_push(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
 673 {
 674   ((wine_cleanup)buffer)->routine = routine;
 675   ((wine_cleanup)buffer)->arg = arg;
 676 }
 677
 678 void _pthread_cleanup_pop(struct _pthread_cleanup_buffer *buffer, int execute)
 679 {
 680   if (execute) (*(((wine_cleanup)buffer)->routine))(((wine_cleanup)buffer)->arg);
 681 }
 682
 683 void _pthread_cleanup_push_defer(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
 684 {
 685   _pthread_cleanup_push(buffer, routine, arg);
 686 }
 687
 688 void _pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer *buffer, int execute)
 689 {
 690   _pthread_cleanup_pop(buffer, execute);
 691 }
 692
 693 void __pthread_cleanup_upto(jmp_buf target, char *frame)
 694 {
 695     /* FIXME */
 696 }
 697
 698 /***** CONDITIONS *****/
 699 /* not implemented right now */
 700
 701 int __pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *cond_attr)
 702 {
 703   P_OUTPUT("FIXME:pthread_cond_init\n");
 704   return 0;
 705 }
 706 strong_alias(__pthread_cond_init, pthread_cond_init);
 707
 708 int __pthread_cond_destroy(pthread_cond_t *cond)
 709 {
 710   P_OUTPUT("FIXME:pthread_cond_destroy\n");
 711   return 0;
 712 }
 713 strong_alias(__pthread_cond_destroy, pthread_cond_destroy);
 714
 715 int __pthread_cond_signal(pthread_cond_t *cond)
 716 {
 717   P_OUTPUT("FIXME:pthread_cond_signal\n");
 718   return 0;
 719 }
 720 strong_alias(__pthread_cond_signal, pthread_cond_signal);
 721
 722 int __pthread_cond_broadcast(pthread_cond_t *cond)
 723 {
 724   P_OUTPUT("FIXME:pthread_cond_broadcast\n");
 725   return 0;
 726 }
 727 strong_alias(__pthread_cond_broadcast, pthread_cond_broadcast);
 728
 729 int __pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 730 {
 731   P_OUTPUT("FIXME:pthread_cond_wait\n");
 732   return 0;
 733 }
 734 strong_alias(__pthread_cond_wait, pthread_cond_wait);
 735
 736 int __pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime)
 737 {
 738   P_OUTPUT("FIXME:pthread_cond_timedwait\n");
 739   return 0;
 740 }
 741 strong_alias(__pthread_cond_timedwait, pthread_cond_timedwait);
 742
 743 /**** CONDITION ATTRIBUTES *****/
 744 /* not implemented right now */
 745
 746 int pthread_condattr_init(pthread_condattr_t *attr)
 747 {
 748   return 0;
 749 }
 750
 751 int pthread_condattr_destroy(pthread_condattr_t *attr)
 752 {
 753   return 0;
 754 }
 755
 756 #if (__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 2)
 757 /***** READ-WRITE LOCKS *****/
 758
 759 static void rwlock_real_init(pthread_rwlock_t *rwlock)
 760 {
 761   RTL_RWLOCK *lock = HeapAlloc(GetProcessHeap(), 0, sizeof(RTL_RWLOCK));
 762   RtlInitializeResource(lock);
 763
 764   if (InterlockedCompareExchangePointer((void**)&(((wine_rwlock)rwlock)->lock),lock,NULL) != NULL) {
 765     /* too late, some other thread already did it */
 766     RtlDeleteResource(lock);
 767     HeapFree(GetProcessHeap(), 0, lock);
 768   }
 769 }
 770
 771 int __pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *rwlock_attr)
 772 {
 773   ((wine_rwlock)rwlock)->lock = NULL;
 774   return 0;
 775 }
 776 strong_alias(__pthread_rwlock_init, pthread_rwlock_init);
 777
 778 int __pthread_rwlock_destroy(pthread_rwlock_t *rwlock)
 779 {
 780   if (!((wine_rwlock)rwlock)->lock) return 0;
 781   RtlDeleteResource(((wine_rwlock)rwlock)->lock);
 782   HeapFree(GetProcessHeap(), 0, ((wine_rwlock)rwlock)->lock);
 783   return 0;
 784 }
 785 strong_alias(__pthread_rwlock_destroy, pthread_rwlock_destroy);
 786
 787 int __pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
 788 {
 789   if (!init_done) return 0;
 790   if (!((wine_rwlock)rwlock)->lock)
 791     rwlock_real_init( rwlock );
 792
 793   while(TRUE)
 794     if (RtlAcquireResourceShared(((wine_rwlock)rwlock)->lock, TRUE))
 795       return 0;
 796 }
 797 strong_alias(__pthread_rwlock_rdlock, pthread_rwlock_rdlock);
 798
 799 int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
 800 {
 801   if (!init_done) return 0;
 802   if (!((wine_rwlock)rwlock)->lock)
 803     rwlock_real_init( rwlock );
 804
 805   if (!RtlAcquireResourceShared(((wine_rwlock)rwlock)->lock, FALSE)) {
 806     errno = EBUSY;
 807     return -1;
 808   }
 809   return 0;
 810 }
 811 strong_alias(__pthread_rwlock_tryrdlock, pthread_rwlock_tryrdlock);
 812
 813 int __pthread_rwlock_wrlock(pthread_rwlock_t *rwlock)
 814 {
 815   if (!init_done) return 0;
 816   if (!((wine_rwlock)rwlock)->lock)
 817     rwlock_real_init( rwlock );
 818
 819   while(TRUE)
 820     if (RtlAcquireResourceExclusive(((wine_rwlock)rwlock)->lock, TRUE))
 821       return 0;
 822 }
 823 strong_alias(__pthread_rwlock_wrlock, pthread_rwlock_wrlock);
 824
 825 int __pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock)
 826 {
 827   if (!init_done) return 0;
 828   if (!((wine_rwlock)rwlock)->lock)
 829     rwlock_real_init( rwlock );
 830
 831   if (!RtlAcquireResourceExclusive(((wine_rwlock)rwlock)->lock, FALSE)) {
 832     errno = EBUSY;
 833     return -1;
 834   }
 835   return 0;
 836 }
 837 strong_alias(__pthread_rwlock_trywrlock, pthread_rwlock_trywrlock);
 838
 839 int __pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
 840 {
 841   if (!((wine_rwlock)rwlock)->lock) return 0;
 842   RtlReleaseResource( ((wine_rwlock)rwlock)->lock );
 843   return 0;
 844 }
 845 strong_alias(__pthread_rwlock_unlock, pthread_rwlock_unlock);
 846
 847 /**** READ-WRITE LOCK ATTRIBUTES *****/
 848 /* not implemented right now */
 849
 850 int pthread_rwlockattr_init(pthread_rwlockattr_t *attr)
 851 {
 852   return 0;
 853 }
 854
 855 int __pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
 856 {
 857   return 0;
 858 }
 859 strong_alias(__pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
 860
 861 int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t *attr, int *pref)
 862 {
 863   *pref = 0;
 864   return 0;
 865 }
 866
 867 int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *attr, int pref)
 868 {
 869   return 0;
 870 }
 871 #endif /* glibc 2.2 */
 872
 873 /***** MISC *****/
 874
 875 pthread_t pthread_self(void)
 876 {
 877   return (pthread_t)GetCurrentThreadId();
 878 }
 879
 880 int pthread_equal(pthread_t thread1, pthread_t thread2)
 881 {
 882   return (DWORD)thread1 == (DWORD)thread2;
 883 }
 884
 885 void __pthread_do_exit(void *retval, char *currentframe)
 886 {
 887   /* FIXME: pthread cleanup */
 888   ExitThread((DWORD)retval);
 889 }
 890
 891 void __pthread_exit(void *retval)
 892 {
 893     __pthread_do_exit( retval, NULL );
 894 }
 895 strong_alias(__pthread_exit, pthread_exit);
 896
 897 int pthread_setcanceltype(int type, int *oldtype)
 898 {
 899   if (oldtype) *oldtype = PTHREAD_CANCEL_ASYNCHRONOUS;
 900   return 0;
 901 }
 902
 903 /***** ANTI-OVERRIDES *****/
 904 /* pthreads tries to override these, point them back to libc */
 905
 906 int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact)
 907 {
 908     if (!libc_sigaction)
 909     {
 910         libc_sigaction = dlsym( RTLD_NEXT, "sigaction" );
 911         assert( libc_sigaction );
 912     }
 913     return libc_sigaction(signum, act, oldact);
 914 }
 915
 916 static struct pthread_functions wine_pthread_functions =
 917 {
 918     NULL,                          /* ptr_pthread_fork */
 919     NULL, /* FIXME */              /* ptr_pthread_attr_destroy */
 920     NULL, /* FIXME */              /* ptr___pthread_attr_init_2_0 */
 921     NULL, /* FIXME */              /* ptr___pthread_attr_init_2_1 */
 922     NULL, /* FIXME */              /* ptr_pthread_attr_getdetachstate */
 923     NULL, /* FIXME */              /* ptr_pthread_attr_setdetachstate */
 924     NULL, /* FIXME */              /* ptr_pthread_attr_getinheritsched */
 925     NULL, /* FIXME */              /* ptr_pthread_attr_setinheritsched */
 926     NULL, /* FIXME */              /* ptr_pthread_attr_getschedparam */
 927     pthread_attr_setschedparam,    /* ptr_pthread_attr_setschedparam */
 928     NULL, /* FIXME */              /* ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *); */
 929     NULL, /* FIXME */              /* ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int); */
 930     NULL, /* FIXME */              /* ptr_pthread_attr_getscope) (const pthread_attr_t *, int *); */
 931     NULL, /* FIXME */              /* ptr_pthread_attr_setscope) (pthread_attr_t *, int); */
 932     pthread_condattr_destroy,      /* ptr_pthread_condattr_destroy */
 933     pthread_condattr_init,         /* ptr_pthread_condattr_init */
 934     __pthread_cond_broadcast,      /* ptr___pthread_cond_broadcast */
 935     __pthread_cond_destroy,        /* ptr___pthread_cond_destroy */
 936     __pthread_cond_init,           /* ptr___pthread_cond_init */
 937     __pthread_cond_signal,         /* ptr___pthread_cond_signal */
 938     __pthread_cond_wait,           /* ptr___pthread_cond_wait */
 939     pthread_equal,                 /* ptr_pthread_equal */
 940     __pthread_exit,                /* ptr___pthread_exit */
 941     NULL, /* FIXME */              /* ptr_pthread_getschedparam */
 942     NULL, /* FIXME */              /* ptr_pthread_setschedparam */
 943     __pthread_mutex_destroy,       /* ptr_pthread_mutex_destroy */
 944     __pthread_mutex_init,          /* ptr_pthread_mutex_init */
 945     __pthread_mutex_lock,          /* ptr_pthread_mutex_lock */
 946     __pthread_mutex_trylock,       /* ptr_pthread_mutex_trylock */
 947     __pthread_mutex_unlock,        /* ptr_pthread_mutex_unlock */
 948     pthread_self,                  /* ptr_pthread_self */
 949     NULL, /* FIXME */              /* ptr_pthread_setcancelstate */
 950     pthread_setcanceltype,         /* ptr_pthread_setcanceltype */
 951     __pthread_do_exit,             /* ptr_pthread_do_exit */
 952     __pthread_cleanup_upto,        /* ptr_pthread_cleanup_upto */
 953     __pthread_thread_self,         /* ptr_pthread_thread_self */
 954     pthread_internal_tsd_set,      /* ptr_pthread_internal_tsd_set */
 955     pthread_internal_tsd_get,      /* ptr_pthread_internal_tsd_get */
 956     pthread_internal_tsd_address,  /* ptr_pthread_internal_tsd_address */
 957     NULL,                          /* ptr_pthread_sigaction */
 958     NULL,                          /* ptr_pthread_sigwait */
 959     NULL                           /* ptr_pthread_raise */
 960 };
 961
 962 #endif /* __GLIBC__ || __FREEBSD__ */
 963
 964 #else  /* HAVE_NPTL */
 965
 966 void PTHREAD_init_done(void)
 967 {
 968 }
 969
 970 #endif  /* HAVE_NPTL */