loader/kthread.c

   1 /*
   2  * pthread emulation based on kernel threads
   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 struct _pthread_cleanup_buffer;
  29
  30 #include <assert.h>
  31 #include <errno.h>
  32 #include <stdlib.h>
  33 #include <signal.h>
  34 #include <setjmp.h>
  35 #ifdef HAVE_UNISTD_H
  36 # include <unistd.h>
  37 #endif
  38 #include <string.h>
  39 #include <sys/types.h>
  40 #ifdef HAVE_SYS_SOCKET_H
  41 # include <sys/socket.h>
  42 #endif
  43 #ifdef HAVE_SYS_MMAN_H
  44 #include <sys/mman.h>
  45 #endif
  46 #ifdef HAVE_NETINET_IN_H
  47 # include <netinet/in.h>
  48 #endif
  49 #ifdef HAVE_ARPA_NAMESER_H
  50 # include <arpa/nameser.h>
  51 #endif
  52 #ifdef HAVE_RESOLV_H
  53 # include <resolv.h>
  54 #endif
  55 #ifdef HAVE_VALGRIND_MEMCHECK_H
  56 #include <valgrind/memcheck.h>
  57 #endif
  58 #ifdef HAVE_SYS_SYSCALL_H
  59 # include <sys/syscall.h>
  60 #endif
  61 #ifdef HAVE_SCHED_H
  62 #include <sched.h>
  63 #endif
  64
  65 #include "wine/library.h"
  66 #include "wine/pthread.h"
  67
  68 #define P_OUTPUT(stuff) write(2,stuff,strlen(stuff))
  69
  70 #define PSTR(str) __ASM_NAME(#str)
  71
  72 static struct wine_pthread_callbacks funcs;
  73
  74 /* thread descriptor */
  75
  76 #define FIRST_KEY 0
  77 #define MAX_KEYS 16 /* libc6 doesn't use that many, but... */
  78 #define MAX_TSD  16
  79
  80 struct pthread_descr_struct
  81 {
  82     char               dummy[2048];
  83     int                thread_errno;
  84     int                thread_h_errno;
  85     int                cancel_state;
  86     int                cancel_type;
  87     struct __res_state res_state;
  88     const void        *key_data[MAX_KEYS];  /* for normal pthread keys */
  89     const void        *tsd_data[MAX_TSD];   /* for libc internal tsd variables */
  90 };
  91
  92 typedef struct pthread_descr_struct *pthread_descr;
  93
  94 static struct pthread_descr_struct initial_descr;
  95
  96 pthread_descr __pthread_thread_self(void)
  97 {
  98     struct pthread_descr_struct *descr;
  99     if (!funcs.ptr_get_thread_data) return &initial_descr;
 100     descr = funcs.ptr_get_thread_data();
 101     if (!descr) return &initial_descr;
 102     return descr;
 103 }
 104
 105 static int (*libc_uselocale)(int set);
 106 static int *libc_multiple_threads;
 107
 108 /***********************************************************************
 109  *           __errno_location/__error/__errno/___errno/__thr_errno
 110  *
 111  * Get the per-thread errno location.
 112  */
 113 int *__errno_location(void)                            /* Linux */
 114 {
 115     pthread_descr descr = __pthread_thread_self();
 116     return &descr->thread_errno;
 117 }
 118 int *__error(void)     { return __errno_location(); }  /* FreeBSD */
 119 int *__errno(void)     { return __errno_location(); }  /* NetBSD */
 120 int *___errno(void)    { return __errno_location(); }  /* Solaris */
 121 int *__thr_errno(void) { return __errno_location(); }  /* UnixWare */
 122
 123 /***********************************************************************
 124  *           __h_errno_location
 125  *
 126  * Get the per-thread h_errno location.
 127  */
 128 int *__h_errno_location(void)
 129 {
 130     pthread_descr descr = __pthread_thread_self();
 131     return &descr->thread_h_errno;
 132 }
 133
 134 struct __res_state *__res_state(void)
 135 {
 136     pthread_descr descr = __pthread_thread_self();
 137     return &descr->res_state;
 138 }
 139
 140 static inline void writejump( const char *symbol, void *dest )
 141 {
 142 #if defined(__GLIBC__) && defined(__i386__)
 143     unsigned char *addr = wine_dlsym( RTLD_NEXT, symbol, NULL, 0 );
 144
 145     if (!addr) return;
 146
 147     /* write a relative jump at the function address */
 148     mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC|PROT_WRITE);
 149     addr[0] = 0xe9;
 150     *(int *)(addr+1) = (unsigned char *)dest - (addr + 5);
 151     mprotect((void*)((unsigned int)addr & ~(getpagesize()-1)), 5, PROT_READ|PROT_EXEC);
 152
 153 # ifdef HAVE_VALGRIND_MEMCHECK_H
 154     VALGRIND_DISCARD_TRANSLATIONS( addr, 5 );
 155 # endif
 156 #endif  /* __GLIBC__ && __i386__ */
 157 }
 158
 159 /* temporary stacks used on thread exit */
 160 #define TEMP_STACK_SIZE 1024
 161 #define NB_TEMP_STACKS  8
 162 static char temp_stacks[NB_TEMP_STACKS][TEMP_STACK_SIZE];
 163 static int next_temp_stack;  /* next temp stack to use */
 164
 165 /***********************************************************************
 166  *           get_temp_stack
 167  *
 168  * Get a temporary stack address to run the thread exit code on.
 169  */
 170 inline static char *get_temp_stack(void)
 171 {
 172     unsigned int next = interlocked_xchg_add( &next_temp_stack, 1 );
 173     return temp_stacks[next % NB_TEMP_STACKS] + TEMP_STACK_SIZE;
 174 }
 175
 176
 177 /***********************************************************************
 178  *           cleanup_thread
 179  *
 180  * Cleanup the remains of a thread. Runs on a temporary stack.
 181  */
 182 static void cleanup_thread( void *ptr )
 183 {
 184     /* copy the info structure since it is on the stack we will free */
 185     struct wine_pthread_thread_info info = *(struct wine_pthread_thread_info *)ptr;
 186     wine_ldt_free_fs( info.teb_sel );
 187     if (info.stack_size) munmap( info.stack_base, info.stack_size );
 188     if (info.teb_size) munmap( info.teb_base, info.teb_size );
 189     _exit( info.exit_status );
 190 }
 191
 192
 193 /***********************************************************************
 194  *           init_process
 195  *
 196  * Initialization for a newly created process.
 197  */
 198 static void init_process( const struct wine_pthread_callbacks *callbacks, size_t size )
 199 {
 200     memcpy( &funcs, callbacks, min( size, sizeof(funcs) ));
 201     funcs.ptr_set_thread_data( &initial_descr );
 202 }
 203
 204
 205 /***********************************************************************
 206  *           init_thread
 207  *
 208  * Initialization for a newly created thread.
 209  */
 210 static void init_thread( struct wine_pthread_thread_info *info )
 211 {
 212     struct pthread_descr_struct *descr;
 213
 214     if (funcs.ptr_set_thread_data)
 215     {
 216         descr = calloc( 1, sizeof(*descr) );
 217         funcs.ptr_set_thread_data( descr );
 218         if (libc_multiple_threads) *libc_multiple_threads = 1;
 219     }
 220     else  /* first thread */
 221     {
 222         descr = &initial_descr;
 223         writejump( "__errno_location", __errno_location );
 224         writejump( "__h_errno_location", __h_errno_location );
 225         writejump( "__res_state", __res_state );
 226     }
 227     descr->cancel_state = PTHREAD_CANCEL_ENABLE;
 228     descr->cancel_type  = PTHREAD_CANCEL_ASYNCHRONOUS;
 229     if (libc_uselocale) libc_uselocale( -1 /*LC_GLOBAL_LOCALE*/ );
 230 }
 231
 232
 233 /***********************************************************************
 234  *           create_thread
 235  */
 236 static int create_thread( struct wine_pthread_thread_info *info )
 237 {
 238     if (!info->stack_base)
 239     {
 240         info->stack_base = wine_anon_mmap( NULL, info->stack_size,
 241                                            PROT_READ | PROT_WRITE | PROT_EXEC, 0 );
 242         if (info->stack_base == (void *)-1) return -1;
 243     }
 244 #ifdef HAVE_CLONE
 245     if (clone( (int (*)(void *))info->entry, (char *)info->stack_base + info->stack_size,
 246                CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, info ) < 0)
 247         return -1;
 248     return 0;
 249 #elif defined(HAVE_RFORK)
 250     {
 251         void **sp = (void **)((char *)info->stack_base + info->stack_size);
 252         *--sp = info;
 253         *--sp = 0;
 254         *--sp = info->entry;
 255         __asm__ __volatile__(
 256             "pushl %2;\n\t"             /* flags */
 257             "pushl $0;\n\t"             /* 0 ? */
 258             "movl %1,%%eax;\n\t"        /* SYS_rfork */
 259             ".byte 0x9a; .long 0; .word 7;\n\t" /* lcall 7:0... FreeBSD syscall */
 260             "cmpl $0, %%edx;\n\t"
 261             "je 1f;\n\t"
 262             "movl %0,%%esp;\n\t"        /* child -> new thread */
 263             "ret;\n"
 264             "1:\n\t"                    /* parent -> caller thread */
 265             "addl $8,%%esp" :
 266             : "r" (sp), "r" (SYS_rfork), "r" (RFPROC | RFMEM | RFTHREAD)
 267             : "eax", "edx");
 268         return 0;
 269     }
 270 #endif
 271     return -1;
 272 }
 273
 274
 275 /***********************************************************************
 276  *           init_current_teb
 277  *
 278  * Set the current TEB for a new thread.
 279  */
 280 static void init_current_teb( struct wine_pthread_thread_info *info )
 281 {
 282     /* On the i386, the current thread is in the %fs register */
 283     LDT_ENTRY fs_entry;
 284
 285     wine_ldt_set_base( &fs_entry, info->teb_base );
 286     wine_ldt_set_limit( &fs_entry, info->teb_size - 1 );
 287     wine_ldt_set_flags( &fs_entry, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
 288     wine_ldt_init_fs( info->teb_sel, &fs_entry );
 289
 290     /* set pid and tid */
 291     info->pid = getpid();
 292     info->tid = -1;
 293 }
 294
 295
 296 /***********************************************************************
 297  *           get_current_teb
 298  */
 299 static void *get_current_teb(void)
 300 {
 301     void *ret;
 302     __asm__( ".byte 0x64\n\tmovl 0x18,%0" : "=r" (ret) );
 303     return ret;
 304 }
 305
 306
 307 /***********************************************************************
 308  *           exit_thread
 309  */
 310 static void DECLSPEC_NORETURN exit_thread( struct wine_pthread_thread_info *info )
 311 {
 312     wine_switch_to_stack( cleanup_thread, info, get_temp_stack() );
 313 }
 314
 315
 316 /***********************************************************************
 317  *           abort_thread
 318  */
 319 static void DECLSPEC_NORETURN abort_thread( long status )
 320 {
 321     _exit( status );
 322 }
 323
 324
 325 /***********************************************************************
 326  *           pthread_functions
 327  */
 328 const struct wine_pthread_functions pthread_functions =
 329 {
 330     init_process,
 331     init_thread,
 332     create_thread,
 333     init_current_teb,
 334     get_current_teb,
 335     exit_thread,
 336     abort_thread,
 337     sigprocmask
 338 };
 339
 340
 341 /* Currently this probably works only for glibc2,
 342  * which checks for the presence of double-underscore-prepended
 343  * pthread primitives, and use them if available.
 344  * If they are not available, the libc defaults to
 345  * non-threadsafe operation (not good). */
 346
 347 #if defined(HAVE_PTHREAD_H) && (defined(__GLIBC__) || defined(__FreeBSD__))
 348
 349 /* adapt as necessary (a construct like this is used in glibc sources) */
 350 #define strong_alias(orig, alias) \
 351  asm(".globl " PSTR(alias) "\n" \
 352      "\t.set " PSTR(alias) "," PSTR(orig))
 353
 354 struct fork_block;
 355
 356 /* pthread functions redirection */
 357
 358 struct pthread_functions
 359 {
 360   pid_t (*ptr_pthread_fork) (struct fork_block *);
 361   int (*ptr_pthread_attr_destroy) (pthread_attr_t *);
 362   int (*ptr___pthread_attr_init_2_0) (pthread_attr_t *);
 363   int (*ptr___pthread_attr_init_2_1) (pthread_attr_t *);
 364   int (*ptr_pthread_attr_getdetachstate) (const pthread_attr_t *, int *);
 365   int (*ptr_pthread_attr_setdetachstate) (pthread_attr_t *, int);
 366   int (*ptr_pthread_attr_getinheritsched) (const pthread_attr_t *, int *);
 367   int (*ptr_pthread_attr_setinheritsched) (pthread_attr_t *, int);
 368   int (*ptr_pthread_attr_getschedparam) (const pthread_attr_t *, struct sched_param *);
 369   int (*ptr_pthread_attr_setschedparam) (pthread_attr_t *, const struct sched_param *);
 370   int (*ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *);
 371   int (*ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int);
 372   int (*ptr_pthread_attr_getscope) (const pthread_attr_t *, int *);
 373   int (*ptr_pthread_attr_setscope) (pthread_attr_t *, int);
 374   int (*ptr_pthread_condattr_destroy) (pthread_condattr_t *);
 375   int (*ptr_pthread_condattr_init) (pthread_condattr_t *);
 376   int (*ptr___pthread_cond_broadcast) (pthread_cond_t *);
 377   int (*ptr___pthread_cond_destroy) (pthread_cond_t *);
 378   int (*ptr___pthread_cond_init) (pthread_cond_t *, const pthread_condattr_t *);
 379   int (*ptr___pthread_cond_signal) (pthread_cond_t *);
 380   int (*ptr___pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *);
 381   int (*ptr_pthread_equal) (pthread_t, pthread_t);
 382   void (*ptr___pthread_exit) (void *);
 383   int (*ptr_pthread_getschedparam) (pthread_t, int *, struct sched_param *);
 384   int (*ptr_pthread_setschedparam) (pthread_t, int, const struct sched_param *);
 385   int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *);
 386   int (*ptr_pthread_mutex_init) (pthread_mutex_t *, const pthread_mutexattr_t *);
 387   int (*ptr_pthread_mutex_lock) (pthread_mutex_t *);
 388   int (*ptr_pthread_mutex_trylock) (pthread_mutex_t *);
 389   int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *);
 390   pthread_t (*ptr_pthread_self) (void);
 391   int (*ptr_pthread_setcancelstate) (int, int *);
 392   int (*ptr_pthread_setcanceltype) (int, int *);
 393   void (*ptr_pthread_do_exit) (void *retval, char *currentframe);
 394   void (*ptr_pthread_cleanup_upto) (jmp_buf target, char *targetframe);
 395   pthread_descr (*ptr_pthread_thread_self) (void);
 396   int (*ptr_pthread_internal_tsd_set) (int key, const void *pointer);
 397   void * (*ptr_pthread_internal_tsd_get) (int key);
 398   void ** __attribute__ ((__const__)) (*ptr_pthread_internal_tsd_address) (int key);
 399   int (*ptr_pthread_sigaction) (int sig, const struct sigaction * act, struct sigaction *oact);
 400   int (*ptr_pthread_sigwait) (const sigset_t *set, int *sig);
 401   int (*ptr_pthread_raise) (int sig);
 402   int (*ptr___pthread_cond_timedwait) (pthread_cond_t *, pthread_mutex_t *, const struct timespec *);
 403   void (*ptr__pthread_cleanup_push) (struct _pthread_cleanup_buffer * buffer, void (*routine)(void *), void * arg);
 404   void (*ptr__pthread_cleanup_pop) (struct _pthread_cleanup_buffer * buffer, int execute);
 405 };
 406
 407 static pid_t (*libc_fork)(void);
 408 static int (*libc_sigaction)(int signum, const struct sigaction *act, struct sigaction *oldact);
 409 static int *(*libc_pthread_init)( const struct pthread_functions *funcs );
 410
 411 static struct pthread_functions libc_pthread_functions;
 412
 413 strong_alias(__pthread_thread_self, pthread_thread_self);
 414
 415 /* redefine this to prevent libpthread from overriding our function pointers */
 416 int *__libc_pthread_init( const struct pthread_functions *funcs )
 417 {
 418     return libc_multiple_threads;
 419 }
 420
 421 typedef struct _wine_cleanup {
 422   void (*routine)(void *);
 423   void *arg;
 424 } *wine_cleanup;
 425
 426 int pthread_create(pthread_t* thread, const pthread_attr_t* attr, void*
 427         (*start_routine)(void *), void* arg)
 428 {
 429     assert( funcs.ptr_pthread_create );
 430     return funcs.ptr_pthread_create( thread, attr, start_routine, arg );
 431 }
 432
 433 int pthread_cancel(pthread_t thread)
 434 {
 435     assert( funcs.ptr_pthread_cancel );
 436     return funcs.ptr_pthread_cancel( thread );
 437 }
 438
 439 int pthread_join(pthread_t thread, void **value_ptr)
 440 {
 441     assert( funcs.ptr_pthread_join );
 442     return funcs.ptr_pthread_join( thread, value_ptr );
 443 }
 444
 445 int pthread_detach(pthread_t thread)
 446 {
 447     assert( funcs.ptr_pthread_detach );
 448     return funcs.ptr_pthread_detach( thread );
 449 }
 450
 451 /* FIXME: we have no equivalents in win32 for the policys */
 452 /* so just keep this as a stub */
 453 int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy)
 454 {
 455   P_OUTPUT("FIXME:pthread_attr_setschedpolicy\n");
 456   return 0;
 457 }
 458
 459 /* FIXME: no win32 equivalent for scope */
 460 int pthread_attr_setscope(pthread_attr_t *attr, int scope)
 461 {
 462   P_OUTPUT("FIXME:pthread_attr_setscope\n");
 463   return 0; /* return success */
 464 }
 465
 466 /* FIXME: no win32 equivalent for schedule param */
 467 int pthread_attr_setschedparam(pthread_attr_t *attr,
 468     const struct sched_param *param)
 469 {
 470   P_OUTPUT("FIXME:pthread_attr_setschedparam\n");
 471   return 0; /* return success */
 472 }
 473
 474 /* FIXME */
 475 int pthread_attr_setstack(pthread_attr_t *attr, void *addr, size_t size)
 476 {
 477   return 0; /* return success */
 478 }
 479
 480 int __pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
 481 {
 482     static pthread_once_t the_once = PTHREAD_ONCE_INIT;
 483     int once_now;
 484
 485     memcpy(&once_now,&the_once,sizeof(once_now));
 486     if (interlocked_cmpxchg((int*)once_control, once_now+1, once_now) == once_now)
 487         (*init_routine)();
 488     return 0;
 489 }
 490 strong_alias(__pthread_once, pthread_once);
 491
 492 void __pthread_kill_other_threads_np(void)
 493 {
 494     /* we don't need to do anything here */
 495 }
 496 strong_alias(__pthread_kill_other_threads_np, pthread_kill_other_threads_np);
 497
 498 /***** atfork *****/
 499
 500 #define MAX_ATFORK 8  /* libc doesn't need that many anyway */
 501
 502 static pthread_mutex_t atfork_mutex = PTHREAD_MUTEX_INITIALIZER;
 503
 504 typedef void (*atfork_handler)(void);
 505 static atfork_handler atfork_prepare[MAX_ATFORK];
 506 static atfork_handler atfork_parent[MAX_ATFORK];
 507 static atfork_handler atfork_child[MAX_ATFORK];
 508 static int atfork_count;
 509
 510 int __pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void))
 511 {
 512     pthread_mutex_lock( &atfork_mutex );
 513     assert( atfork_count < MAX_ATFORK );
 514     atfork_prepare[atfork_count] = prepare;
 515     atfork_parent[atfork_count] = parent;
 516     atfork_child[atfork_count] = child;
 517     atfork_count++;
 518     pthread_mutex_unlock( &atfork_mutex );
 519     return 0;
 520 }
 521 strong_alias(__pthread_atfork, pthread_atfork);
 522
 523 pid_t __fork(void)
 524 {
 525     pid_t pid;
 526     int i;
 527
 528     if (!libc_fork)
 529     {
 530         libc_fork = wine_dlsym( RTLD_NEXT, "fork", NULL, 0 );
 531         assert( libc_fork );
 532     }
 533     pthread_mutex_lock( &atfork_mutex );
 534     /* prepare handlers are called in reverse insertion order */
 535     for (i = atfork_count - 1; i >= 0; i--) if (atfork_prepare[i]) atfork_prepare[i]();
 536     if (!(pid = libc_fork()))
 537     {
 538         pthread_mutex_init( &atfork_mutex, NULL );
 539         for (i = 0; i < atfork_count; i++) if (atfork_child[i]) atfork_child[i]();
 540     }
 541     else
 542     {
 543         for (i = 0; i < atfork_count; i++) if (atfork_parent[i]) atfork_parent[i]();
 544         pthread_mutex_unlock( &atfork_mutex );
 545     }
 546     return pid;
 547 }
 548 strong_alias(__fork, fork);
 549
 550 /***** MUTEXES *****/
 551
 552 int __pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr)
 553 {
 554     if (!funcs.ptr_pthread_mutex_init) return 0;
 555     return funcs.ptr_pthread_mutex_init( mutex, mutexattr );
 556 }
 557 strong_alias(__pthread_mutex_init, pthread_mutex_init);
 558
 559 int __pthread_mutex_lock(pthread_mutex_t *mutex)
 560 {
 561     if (!funcs.ptr_pthread_mutex_lock) return 0;
 562     return funcs.ptr_pthread_mutex_lock( mutex );
 563 }
 564 strong_alias(__pthread_mutex_lock, pthread_mutex_lock);
 565
 566 int __pthread_mutex_trylock(pthread_mutex_t *mutex)
 567 {
 568     if (!funcs.ptr_pthread_mutex_trylock) return 0;
 569     return funcs.ptr_pthread_mutex_trylock( mutex );
 570 }
 571 strong_alias(__pthread_mutex_trylock, pthread_mutex_trylock);
 572
 573 int __pthread_mutex_unlock(pthread_mutex_t *mutex)
 574 {
 575     if (!funcs.ptr_pthread_mutex_unlock) return 0;
 576     return funcs.ptr_pthread_mutex_unlock( mutex );
 577 }
 578 strong_alias(__pthread_mutex_unlock, pthread_mutex_unlock);
 579
 580 int __pthread_mutex_destroy(pthread_mutex_t *mutex)
 581 {
 582     if (!funcs.ptr_pthread_mutex_destroy) return 0;
 583     return funcs.ptr_pthread_mutex_destroy( mutex );
 584 }
 585 strong_alias(__pthread_mutex_destroy, pthread_mutex_destroy);
 586
 587
 588 /***** MUTEX ATTRIBUTES *****/
 589 /* just dummies, since critical sections are always recursive */
 590
 591 int __pthread_mutexattr_init(pthread_mutexattr_t *attr)
 592 {
 593   return 0;
 594 }
 595 strong_alias(__pthread_mutexattr_init, pthread_mutexattr_init);
 596
 597 int __pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
 598 {
 599   return 0;
 600 }
 601 strong_alias(__pthread_mutexattr_destroy, pthread_mutexattr_destroy);
 602
 603 int __pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind)
 604 {
 605   return 0;
 606 }
 607 strong_alias(__pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np);
 608
 609 int __pthread_mutexattr_getkind_np(pthread_mutexattr_t *attr, int *kind)
 610 {
 611   *kind = PTHREAD_MUTEX_RECURSIVE;
 612   return 0;
 613 }
 614 strong_alias(__pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np);
 615
 616 int __pthread_mutexattr_settype(pthread_mutexattr_t *attr, int kind)
 617 {
 618   return 0;
 619 }
 620 strong_alias(__pthread_mutexattr_settype, pthread_mutexattr_settype);
 621
 622 int __pthread_mutexattr_gettype(const pthread_mutexattr_t *attr, int *kind)
 623 {
 624   *kind = PTHREAD_MUTEX_RECURSIVE;
 625   return 0;
 626 }
 627 strong_alias(__pthread_mutexattr_gettype, pthread_mutexattr_gettype);
 628
 629
 630 /***** THREAD-SPECIFIC VARIABLES (KEYS) *****/
 631
 632 int __pthread_key_create(pthread_key_t *key, void (*destr_function)(void *))
 633 {
 634     static int keycnt = FIRST_KEY;
 635     *key = interlocked_xchg_add(&keycnt, 1);
 636     return 0;
 637 }
 638 strong_alias(__pthread_key_create, pthread_key_create);
 639
 640 int __pthread_key_delete(pthread_key_t key)
 641 {
 642   return 0;
 643 }
 644 strong_alias(__pthread_key_delete, pthread_key_delete);
 645
 646 int __pthread_setspecific(pthread_key_t key, const void *pointer)
 647 {
 648     pthread_descr descr = __pthread_thread_self();
 649     descr->key_data[key] = pointer;
 650     return 0;
 651 }
 652 strong_alias(__pthread_setspecific, pthread_setspecific);
 653
 654 void *__pthread_getspecific(pthread_key_t key)
 655 {
 656     pthread_descr descr = __pthread_thread_self();
 657     return (void *)descr->key_data[key];
 658 }
 659 strong_alias(__pthread_getspecific, pthread_getspecific);
 660
 661 static int pthread_internal_tsd_set( int key, const void *pointer )
 662 {
 663     pthread_descr descr = __pthread_thread_self();
 664     descr->tsd_data[key] = pointer;
 665     return 0;
 666 }
 667 int (*__libc_internal_tsd_set)(int, const void *) = pthread_internal_tsd_set;
 668
 669 static void *pthread_internal_tsd_get( int key )
 670 {
 671     pthread_descr descr = __pthread_thread_self();
 672     return (void *)descr->tsd_data[key];
 673 }
 674 void* (*__libc_internal_tsd_get)(int) = pthread_internal_tsd_get;
 675
 676 static void ** __attribute__((const)) pthread_internal_tsd_address( int key )
 677 {
 678     pthread_descr descr = __pthread_thread_self();
 679     return (void **)&descr->tsd_data[key];
 680 }
 681 void** (*__libc_internal_tsd_address)(int) = pthread_internal_tsd_address;
 682
 683 /***** "EXCEPTION" FRAMES *****/
 684 /* not implemented right now */
 685
 686 void _pthread_cleanup_push(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
 687 {
 688   ((wine_cleanup)buffer)->routine = routine;
 689   ((wine_cleanup)buffer)->arg = arg;
 690 }
 691
 692 void _pthread_cleanup_pop(struct _pthread_cleanup_buffer *buffer, int execute)
 693 {
 694   if (execute) (*(((wine_cleanup)buffer)->routine))(((wine_cleanup)buffer)->arg);
 695 }
 696
 697 void _pthread_cleanup_push_defer(struct _pthread_cleanup_buffer *buffer, void (*routine)(void *), void *arg)
 698 {
 699   _pthread_cleanup_push(buffer, routine, arg);
 700 }
 701
 702 void _pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer *buffer, int execute)
 703 {
 704   _pthread_cleanup_pop(buffer, execute);
 705 }
 706
 707 void __pthread_cleanup_upto(jmp_buf target, char *frame)
 708 {
 709     /* FIXME */
 710 }
 711
 712 /***** CONDITIONS *****/
 713
 714 int __pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *cond_attr)
 715 {
 716     if (!funcs.ptr_pthread_cond_init) return 0;
 717     return funcs.ptr_pthread_cond_init(cond, cond_attr);
 718 }
 719 strong_alias(__pthread_cond_init, pthread_cond_init);
 720
 721 int __pthread_cond_destroy(pthread_cond_t *cond)
 722 {
 723     if (!funcs.ptr_pthread_cond_destroy) return 0;
 724     return funcs.ptr_pthread_cond_destroy(cond);
 725 }
 726 strong_alias(__pthread_cond_destroy, pthread_cond_destroy);
 727
 728 int __pthread_cond_signal(pthread_cond_t *cond)
 729 {
 730     if (!funcs.ptr_pthread_cond_signal) return 0;
 731     return funcs.ptr_pthread_cond_signal(cond);
 732 }
 733 strong_alias(__pthread_cond_signal, pthread_cond_signal);
 734
 735 int __pthread_cond_broadcast(pthread_cond_t *cond)
 736 {
 737     if (!funcs.ptr_pthread_cond_broadcast) return 0;
 738     return funcs.ptr_pthread_cond_broadcast(cond);
 739 }
 740 strong_alias(__pthread_cond_broadcast, pthread_cond_broadcast);
 741
 742 int __pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
 743 {
 744     if (!funcs.ptr_pthread_cond_wait) return 0;
 745     return funcs.ptr_pthread_cond_wait(cond, mutex);
 746 }
 747 strong_alias(__pthread_cond_wait, pthread_cond_wait);
 748
 749 int __pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime)
 750 {
 751     if (!funcs.ptr_pthread_cond_timedwait) return 0;
 752     return funcs.ptr_pthread_cond_timedwait(cond, mutex, abstime);
 753 }
 754 strong_alias(__pthread_cond_timedwait, pthread_cond_timedwait);
 755
 756 /**** CONDITION ATTRIBUTES *****/
 757 /* not implemented right now */
 758
 759 int pthread_condattr_init(pthread_condattr_t *attr)
 760 {
 761   return 0;
 762 }
 763
 764 int pthread_condattr_destroy(pthread_condattr_t *attr)
 765 {
 766   return 0;
 767 }
 768
 769 /***** READ-WRITE LOCKS *****/
 770
 771 int __pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *rwlock_attr)
 772 {
 773     assert( funcs.ptr_pthread_rwlock_init );
 774     return funcs.ptr_pthread_rwlock_init( rwlock, rwlock_attr );
 775 }
 776 strong_alias(__pthread_rwlock_init, pthread_rwlock_init);
 777
 778 int __pthread_rwlock_destroy(pthread_rwlock_t *rwlock)
 779 {
 780     assert( funcs.ptr_pthread_rwlock_destroy );
 781     return funcs.ptr_pthread_rwlock_destroy( rwlock );
 782 }
 783 strong_alias(__pthread_rwlock_destroy, pthread_rwlock_destroy);
 784
 785 int __pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
 786 {
 787     if (!funcs.ptr_pthread_rwlock_rdlock) return 0;
 788     return funcs.ptr_pthread_rwlock_rdlock( rwlock );
 789 }
 790 strong_alias(__pthread_rwlock_rdlock, pthread_rwlock_rdlock);
 791
 792 int __pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
 793 {
 794     assert( funcs.ptr_pthread_rwlock_tryrdlock );
 795     return funcs.ptr_pthread_rwlock_tryrdlock( rwlock );
 796 }
 797 strong_alias(__pthread_rwlock_tryrdlock, pthread_rwlock_tryrdlock);
 798
 799 int __pthread_rwlock_wrlock(pthread_rwlock_t *rwlock)
 800 {
 801     assert( funcs.ptr_pthread_rwlock_wrlock );
 802     return funcs.ptr_pthread_rwlock_wrlock( rwlock );
 803 }
 804 strong_alias(__pthread_rwlock_wrlock, pthread_rwlock_wrlock);
 805
 806 int __pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock)
 807 {
 808     assert( funcs.ptr_pthread_rwlock_trywrlock );
 809     return funcs.ptr_pthread_rwlock_trywrlock( rwlock );
 810 }
 811 strong_alias(__pthread_rwlock_trywrlock, pthread_rwlock_trywrlock);
 812
 813 int __pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
 814 {
 815     if (!funcs.ptr_pthread_rwlock_unlock) return 0;
 816     return funcs.ptr_pthread_rwlock_unlock( rwlock );
 817 }
 818 strong_alias(__pthread_rwlock_unlock, pthread_rwlock_unlock);
 819
 820 /**** READ-WRITE LOCK ATTRIBUTES *****/
 821 /* not implemented right now */
 822
 823 int pthread_rwlockattr_init(pthread_rwlockattr_t *attr)
 824 {
 825   return 0;
 826 }
 827
 828 int __pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
 829 {
 830   return 0;
 831 }
 832 strong_alias(__pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
 833
 834 int pthread_rwlockattr_getkind_np(const pthread_rwlockattr_t *attr, int *pref)
 835 {
 836   *pref = 0;
 837   return 0;
 838 }
 839
 840 int pthread_rwlockattr_setkind_np(pthread_rwlockattr_t *attr, int pref)
 841 {
 842   return 0;
 843 }
 844
 845 /***** MISC *****/
 846
 847 pthread_t pthread_self(void)
 848 {
 849     assert( funcs.ptr_pthread_self );
 850     return funcs.ptr_pthread_self();
 851 }
 852
 853 int pthread_equal(pthread_t thread1, pthread_t thread2)
 854 {
 855     assert( funcs.ptr_pthread_equal );
 856     return funcs.ptr_pthread_equal( thread1, thread2 );
 857 }
 858
 859 void __pthread_do_exit(void *retval, char *currentframe)
 860 {
 861     assert( funcs.ptr_pthread_exit );
 862     return funcs.ptr_pthread_exit( retval, currentframe );
 863 }
 864
 865 void __pthread_exit(void *retval)
 866 {
 867     __pthread_do_exit( retval, NULL );
 868 }
 869 strong_alias(__pthread_exit, pthread_exit);
 870
 871 int pthread_setcancelstate(int state, int *oldstate)
 872 {
 873     pthread_descr descr = __pthread_thread_self();
 874     if (oldstate) *oldstate = descr->cancel_state;
 875     descr->cancel_state = state;
 876     return 0;
 877 }
 878
 879 int pthread_setcanceltype(int type, int *oldtype)
 880 {
 881     pthread_descr descr = __pthread_thread_self();
 882     if (oldtype) *oldtype = descr->cancel_type;
 883     descr->cancel_type = type;
 884     return 0;
 885 }
 886
 887 /***** ANTI-OVERRIDES *****/
 888 /* pthreads tries to override these, point them back to libc */
 889
 890 int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact)
 891 {
 892     if (!libc_sigaction)
 893     {
 894         libc_sigaction = wine_dlsym( RTLD_NEXT, "sigaction", NULL, 0 );
 895         assert( libc_sigaction );
 896     }
 897     return libc_sigaction(signum, act, oldact);
 898 }
 899
 900 void __pthread_initialize(void)
 901 {
 902     static int done;
 903
 904     if (!done)
 905     {
 906         done = 1;
 907         libc_fork = wine_dlsym( RTLD_NEXT, "fork", NULL, 0 );
 908         libc_sigaction = wine_dlsym( RTLD_NEXT, "sigaction", NULL, 0 );
 909         libc_uselocale = wine_dlsym( RTLD_DEFAULT, "uselocale", NULL, 0 );
 910         libc_pthread_init = wine_dlsym( RTLD_NEXT, "__libc_pthread_init", NULL, 0 );
 911         if (libc_pthread_init) libc_multiple_threads = libc_pthread_init( &libc_pthread_functions );
 912     }
 913 }
 914
 915 #ifdef __GNUC__
 916 static void init(void) __attribute__((constructor));
 917 static void init(void)
 918 {
 919     __pthread_initialize();
 920 }
 921 #endif
 922
 923 static struct pthread_functions libc_pthread_functions =
 924 {
 925     NULL,                          /* ptr_pthread_fork */
 926     NULL, /* FIXME */              /* ptr_pthread_attr_destroy */
 927     NULL, /* FIXME */              /* ptr___pthread_attr_init_2_0 */
 928     NULL, /* FIXME */              /* ptr___pthread_attr_init_2_1 */
 929     NULL, /* FIXME */              /* ptr_pthread_attr_getdetachstate */
 930     NULL, /* FIXME */              /* ptr_pthread_attr_setdetachstate */
 931     NULL, /* FIXME */              /* ptr_pthread_attr_getinheritsched */
 932     NULL, /* FIXME */              /* ptr_pthread_attr_setinheritsched */
 933     NULL, /* FIXME */              /* ptr_pthread_attr_getschedparam */
 934     pthread_attr_setschedparam,    /* ptr_pthread_attr_setschedparam */
 935     NULL, /* FIXME */              /* ptr_pthread_attr_getschedpolicy */
 936     NULL, /* FIXME */              /* ptr_pthread_attr_setschedpolicy */
 937     NULL, /* FIXME */              /* ptr_pthread_attr_getscope */
 938     NULL, /* FIXME */              /* ptr_pthread_attr_setscope */
 939     pthread_condattr_destroy,      /* ptr_pthread_condattr_destroy */
 940     pthread_condattr_init,         /* ptr_pthread_condattr_init */
 941     __pthread_cond_broadcast,      /* ptr___pthread_cond_broadcast */
 942     __pthread_cond_destroy,        /* ptr___pthread_cond_destroy */
 943     __pthread_cond_init,           /* ptr___pthread_cond_init */
 944     __pthread_cond_signal,         /* ptr___pthread_cond_signal */
 945     __pthread_cond_wait,           /* ptr___pthread_cond_wait */
 946     pthread_equal,                 /* ptr_pthread_equal */
 947     __pthread_exit,                /* ptr___pthread_exit */
 948     NULL, /* FIXME */              /* ptr_pthread_getschedparam */
 949     NULL, /* FIXME */              /* ptr_pthread_setschedparam */
 950     __pthread_mutex_destroy,       /* ptr_pthread_mutex_destroy */
 951     __pthread_mutex_init,          /* ptr_pthread_mutex_init */
 952     __pthread_mutex_lock,          /* ptr_pthread_mutex_lock */
 953     __pthread_mutex_trylock,       /* ptr_pthread_mutex_trylock */
 954     __pthread_mutex_unlock,        /* ptr_pthread_mutex_unlock */
 955     pthread_self,                  /* ptr_pthread_self */
 956     pthread_setcancelstate,        /* ptr_pthread_setcancelstate */
 957     pthread_setcanceltype,         /* ptr_pthread_setcanceltype */
 958     __pthread_do_exit,             /* ptr_pthread_do_exit */
 959     __pthread_cleanup_upto,        /* ptr_pthread_cleanup_upto */
 960     __pthread_thread_self,         /* ptr_pthread_thread_self */
 961     pthread_internal_tsd_set,      /* ptr_pthread_internal_tsd_set */
 962     pthread_internal_tsd_get,      /* ptr_pthread_internal_tsd_get */
 963     pthread_internal_tsd_address,  /* ptr_pthread_internal_tsd_address */
 964     NULL,                          /* ptr_pthread_sigaction */
 965     NULL,                          /* ptr_pthread_sigwait */
 966     NULL,                          /* ptr_pthread_raise */
 967     __pthread_cond_timedwait,      /* ptr___pthread_cond_timedwait */
 968     _pthread_cleanup_push,         /* ptr__pthread_cleanup_push */
 969     _pthread_cleanup_pop           /* ptr__pthread_cleanup_pop */
 970 };
 971
 972 #endif /* HAVE_PTHREAD_H && (__GLIBC__ || __FREEBSD__) */