scheduler/thread.c

   1 /*
   2  * Win32 threads
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8
   9 #include <assert.h>
  10 #include <fcntl.h>
  11 #include <sys/types.h>
  12 #ifdef HAVE_SYS_MMAN_H
  13 #include <sys/mman.h>
  14 #endif
  15 #include <unistd.h>
  16 #include "wine/winbase16.h"
  17 #include "wine/port.h"
  18 #include "thread.h"
  19 #include "task.h"
  20 #include "module.h"
  21 #include "winerror.h"
  22 #include "heap.h"
  23 #include "selectors.h"
  24 #include "winnt.h"
  25 #include "server.h"
  26 #include "services.h"
  27 #include "stackframe.h"
  28 #include "builtin16.h"
  29 #include "debugtools.h"
  30 #include "winnls.h"
  31
  32 DEFAULT_DEBUG_CHANNEL(thread);
  33
  34 /* TEB of the initial thread */
  35 static TEB initial_teb;
  36
  37 extern struct _PDB current_process;
  38
  39 /***********************************************************************
  40  *           THREAD_IsWin16
  41  */
  42 BOOL THREAD_IsWin16( TEB *teb )
  43 {
  44     return !teb || !(teb->tibflags & TEBF_WIN32);
  45 }
  46
  47 /***********************************************************************
  48  *           THREAD_IdToTEB
  49  *
  50  * Convert a thread id to a TEB, making sure it is valid.
  51  */
  52 TEB *THREAD_IdToTEB( DWORD id )
  53 {
  54     TEB *ret = NULL;
  55
  56     if (!id || id == GetCurrentThreadId()) return NtCurrentTeb();
  57
  58     SERVER_START_REQ( get_thread_info )
  59     {
  60         req->handle = 0;
  61         req->tid_in = (void *)id;
  62         if (!SERVER_CALL()) ret = req->teb;
  63     }
  64     SERVER_END_REQ;
  65
  66     if (!ret)
  67     {
  68         /* Allow task handles to be used; convert to main thread */
  69         if ( IsTask16( id ) )
  70         {
  71             TDB *pTask = (TDB *)GlobalLock16( id );
  72             if (pTask) return pTask->teb;
  73         }
  74         SetLastError( ERROR_INVALID_PARAMETER );
  75     }
  76     return ret;
  77 }
  78
  79
  80 /***********************************************************************
  81  *           THREAD_InitTEB
  82  *
  83  * Initialization of a newly created TEB.
  84  */
  85 static BOOL THREAD_InitTEB( TEB *teb )
  86 {
  87     teb->except    = (void *)~0UL;
  88     teb->self      = teb;
  89     teb->tibflags  = TEBF_WIN32;
  90     teb->tls_ptr   = teb->tls_array;
  91     teb->exit_code = STILL_ACTIVE;
  92     teb->socket    = -1;
  93     teb->request_fd = -1;
  94     teb->reply_fd   = -1;
  95     teb->wait_fd    = -1;
  96     teb->stack_top  = (void *)~0UL;
  97     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
  98     teb->StaticUnicodeString.Buffer = (PWSTR)teb->StaticUnicodeBuffer;
  99     teb->teb_sel = SELECTOR_AllocBlock( teb, 0x1000, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
 100     return (teb->teb_sel != 0);
 101 }
 102
 103
 104 /***********************************************************************
 105  *           THREAD_FreeTEB
 106  *
 107  * Free data structures associated with a thread.
 108  * Must be called from the context of another thread.
 109  */
 110 static void CALLBACK THREAD_FreeTEB( TEB *teb )
 111 {
 112     TRACE("(%p) called\n", teb );
 113     if (teb->cleanup) SERVICE_Delete( teb->cleanup );
 114
 115     /* Free the associated memory */
 116
 117     if (teb->socket != -1) close( teb->socket );
 118     close( teb->request_fd );
 119     close( teb->reply_fd );
 120     close( teb->wait_fd );
 121     if (teb->stack_sel) FreeSelector16( teb->stack_sel );
 122     FreeSelector16( teb->teb_sel );
 123     if (teb->buffer) munmap( (void *)teb->buffer, teb->buffer_size );
 124     if (teb->debug_info) HeapFree( GetProcessHeap(), 0, teb->debug_info );
 125     VirtualFree( teb->stack_base, 0, MEM_RELEASE );
 126 }
 127
 128
 129 /***********************************************************************
 130  *           THREAD_InitStack
 131  *
 132  * Allocate the stack of a thread.
 133  */
 134 TEB *THREAD_InitStack( TEB *teb, DWORD stack_size )
 135 {
 136     DWORD old_prot, total_size;
 137     DWORD page_size = getpagesize();
 138     void *base;
 139
 140     /* Allocate the stack */
 141
 142     if (stack_size >= 16*1024*1024)
 143         WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024);
 144
 145     /* if size is smaller than default, get stack size from parent */
 146     if (stack_size < 1024 * 1024)
 147     {
 148         if (teb)
 149             stack_size = 1024 * 1024;  /* no parent */
 150         else
 151             stack_size = ((char *)NtCurrentTeb()->stack_top - (char *)NtCurrentTeb()->stack_base
 152                           - SIGNAL_STACK_SIZE - 3 * page_size);
 153     }
 154
 155     /* FIXME: some Wine functions use a lot of stack, so we add 64Kb here */
 156     stack_size += 64 * 1024;
 157
 158     /* Memory layout in allocated block:
 159      *
 160      *   size                 contents
 161      * 1 page              NOACCESS guard page
 162      * SIGNAL_STACK_SIZE   signal stack
 163      * 1 page              NOACCESS guard page
 164      * 1 page              PAGE_GUARD guard page
 165      * stack_size          normal stack
 166      * 64Kb                16-bit stack (optional)
 167      * 1 page              TEB (except for initial thread)
 168      */
 169
 170     stack_size = (stack_size + (page_size - 1)) & ~(page_size - 1);
 171     total_size = stack_size + SIGNAL_STACK_SIZE + 3 * page_size;
 172     total_size += 0x10000; /* 16-bit stack */
 173     if (!teb) total_size += page_size;
 174
 175     if (!(base = VirtualAlloc( NULL, total_size, MEM_COMMIT, PAGE_EXECUTE_READWRITE )))
 176         return NULL;
 177
 178     if (!teb)
 179     {
 180         teb = (TEB *)((char *)base + total_size - page_size);
 181         if (!THREAD_InitTEB( teb ))
 182         {
 183             VirtualFree( base, 0, MEM_RELEASE );
 184             return NULL;
 185         }
 186     }
 187
 188     teb->stack_low    = base;
 189     teb->stack_base   = base;
 190     teb->signal_stack = (char *)base + page_size;
 191     teb->stack_top    = (char *)base + 3 * page_size + SIGNAL_STACK_SIZE + stack_size;
 192
 193     /* Setup guard pages */
 194
 195     VirtualProtect( base, 1, PAGE_NOACCESS, &old_prot );
 196     VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE, 1, PAGE_NOACCESS, &old_prot );
 197     VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE + page_size, 1,
 198                     PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_prot );
 199
 200     /* Allocate the 16-bit stack selector */
 201
 202     teb->stack_sel = SELECTOR_AllocBlock( teb->stack_top, 0x10000, WINE_LDT_FLAGS_DATA );
 203     if (!teb->stack_sel) goto error;
 204     teb->cur_stack = MAKESEGPTR( teb->stack_sel, 0x10000 - sizeof(STACK16FRAME) );
 205
 206     return teb;
 207
 208 error:
 209     THREAD_FreeTEB( teb );
 210     return NULL;
 211 }
 212
 213
 214 /***********************************************************************
 215  *           thread_errno_location
 216  *
 217  * Get the per-thread errno location.
 218  */
 219 static int *thread_errno_location(void)
 220 {
 221     return &NtCurrentTeb()->thread_errno;
 222 }
 223
 224 /***********************************************************************
 225  *           thread_h_errno_location
 226  *
 227  * Get the per-thread h_errno location.
 228  */
 229 static int *thread_h_errno_location(void)
 230 {
 231     return &NtCurrentTeb()->thread_h_errno;
 232 }
 233
 234 /***********************************************************************
 235  *           THREAD_Init
 236  *
 237  * Setup the initial thread.
 238  *
 239  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 240  */
 241 void THREAD_Init(void)
 242 {
 243     if (!initial_teb.self)  /* do it only once */
 244     {
 245         THREAD_InitTEB( &initial_teb );
 246         assert( initial_teb.teb_sel );
 247         initial_teb.process = &current_process;
 248         SYSDEPS_SetCurThread( &initial_teb );
 249         wine_errno_location = thread_errno_location;
 250         wine_h_errno_location = thread_h_errno_location;
 251     }
 252 }
 253
 254 DECL_GLOBAL_CONSTRUCTOR(thread_init) { THREAD_Init(); }
 255
 256
 257 /***********************************************************************
 258  *           THREAD_Start
 259  *
 260  * Start execution of a newly created thread. Does not return.
 261  */
 262 static void THREAD_Start(void)
 263 {
 264     HANDLE cleanup_object;
 265     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)NtCurrentTeb()->entry_point;
 266
 267     /* install cleanup handler */
 268     if (DuplicateHandle( GetCurrentProcess(), GetCurrentThread(),
 269                          GetCurrentProcess(), &cleanup_object,
 270                          0, FALSE, DUPLICATE_SAME_ACCESS ))
 271         NtCurrentTeb()->cleanup = SERVICE_AddObject( cleanup_object, (PAPCFUNC)THREAD_FreeTEB,
 272                                                      (ULONG_PTR)NtCurrentTeb() );
 273
 274     PROCESS_CallUserSignalProc( USIG_THREAD_INIT, 0 );
 275     PE_InitTls();
 276     MODULE_DllThreadAttach( NULL );
 277     ExitThread( func( NtCurrentTeb()->entry_arg ) );
 278 }
 279
 280
 281 /***********************************************************************
 282  *           CreateThread   (KERNEL32.@)
 283  */
 284 HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, DWORD stack,
 285                             LPTHREAD_START_ROUTINE start, LPVOID param,
 286                             DWORD flags, LPDWORD id )
 287 {
 288     int socket = -1;
 289     HANDLE handle = 0;
 290     TEB *teb;
 291     void *tid = 0;
 292
 293     SERVER_START_REQ( new_thread )
 294     {
 295         req->suspend = ((flags & CREATE_SUSPENDED) != 0);
 296         req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
 297         if (!SERVER_CALL_ERR())
 298         {
 299             handle = req->handle;
 300             tid = req->tid;
 301             socket = wine_server_recv_fd( handle, 0 );
 302         }
 303     }
 304     SERVER_END_REQ;
 305     if (!handle) return 0;
 306
 307     if (!(teb = THREAD_InitStack( NULL, stack )))
 308     {
 309         close( socket );
 310         return 0;
 311     }
 312
 313     teb->process     = NtCurrentTeb()->process;
 314     teb->socket      = socket;
 315     teb->entry_point = start;
 316     teb->entry_arg   = param;
 317     teb->startup     = THREAD_Start;
 318     teb->htask16     = GetCurrentTask();
 319     fcntl( socket, F_SETFD, 1 ); /* set close on exec flag */
 320
 321     if (id) *id = (DWORD)tid;
 322     if (SYSDEPS_SpawnThread( teb ) == -1)
 323     {
 324         CloseHandle( handle );
 325         THREAD_FreeTEB( teb );
 326         return 0;
 327     }
 328     return handle;
 329 }
 330
 331 /***********************************************************************
 332  *           CreateThread16   (KERNEL.441)
 333  */
 334 static DWORD CALLBACK THREAD_StartThread16( LPVOID threadArgs )
 335 {
 336     FARPROC16 start = ((FARPROC16 *)threadArgs)[0];
 337     DWORD     param = ((DWORD *)threadArgs)[1];
 338     HeapFree( GetProcessHeap(), 0, threadArgs );
 339
 340     ((LPDWORD)CURRENT_STACK16)[-1] = param;
 341     return wine_call_to_16_long( start, sizeof(DWORD) );
 342 }
 343 HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
 344                               FARPROC16 start, SEGPTR param,
 345                               DWORD flags, LPDWORD id )
 346 {
 347     DWORD *threadArgs = HeapAlloc( GetProcessHeap(), 0, 2*sizeof(DWORD) );
 348     if (!threadArgs) return INVALID_HANDLE_VALUE;
 349     threadArgs[0] = (DWORD)start;
 350     threadArgs[1] = (DWORD)param;
 351
 352     return CreateThread( sa, stack, THREAD_StartThread16, threadArgs, flags, id );
 353 }
 354
 355
 356 /***********************************************************************
 357  * ExitThread [KERNEL32.215]  Ends a thread
 358  *
 359  * RETURNS
 360  *    None
 361  */
 362 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 363 {
 364     BOOL last;
 365     SERVER_START_REQ( terminate_thread )
 366     {
 367         /* send the exit code to the server */
 368         req->handle    = GetCurrentThread();
 369         req->exit_code = code;
 370         SERVER_CALL();
 371         last = req->last;
 372     }
 373     SERVER_END_REQ;
 374
 375     if (last)
 376     {
 377         MODULE_DllProcessDetach( TRUE, (LPVOID)1 );
 378         exit( code );
 379     }
 380     else
 381     {
 382         MODULE_DllThreadDetach( NULL );
 383         if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask();
 384         SYSDEPS_ExitThread( code );
 385     }
 386 }
 387
 388
 389 /***********************************************************************
 390  * SetThreadContext [KERNEL32.670]  Sets context of thread.
 391  *
 392  * RETURNS
 393  *    Success: TRUE
 394  *    Failure: FALSE
 395  */
 396 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 397                               const CONTEXT *context ) /* [in] Address of context structure */
 398 {
 399     BOOL ret;
 400     SERVER_START_VAR_REQ( set_thread_context, sizeof(*context) )
 401     {
 402         req->handle = handle;
 403         req->flags = context->ContextFlags;
 404         memcpy( server_data_ptr(req), context, sizeof(*context) );
 405         ret = !SERVER_CALL_ERR();
 406     }
 407     SERVER_END_VAR_REQ;
 408     return ret;
 409 }
 410
 411
 412 /***********************************************************************
 413  * GetThreadContext [KERNEL32.@]  Retrieves context of thread.
 414  *
 415  * RETURNS
 416  *    Success: TRUE
 417  *    Failure: FALSE
 418  */
 419 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 420                               CONTEXT *context ) /* [out] Address of context structure */
 421 {
 422     BOOL ret;
 423     SERVER_START_VAR_REQ( get_thread_context, sizeof(*context) )
 424     {
 425         req->handle = handle;
 426         req->flags = context->ContextFlags;
 427         memcpy( server_data_ptr(req), context, sizeof(*context) );
 428         if ((ret = !SERVER_CALL_ERR()))
 429             memcpy( context, server_data_ptr(req), sizeof(*context) );
 430     }
 431     SERVER_END_VAR_REQ;
 432     return ret;
 433 }
 434
 435
 436 /**********************************************************************
 437  * GetThreadPriority [KERNEL32.@]  Returns priority for thread.
 438  *
 439  * RETURNS
 440  *    Success: Thread's priority level.
 441  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 442  */
 443 INT WINAPI GetThreadPriority(
 444     HANDLE hthread) /* [in] Handle to thread */
 445 {
 446     INT ret = THREAD_PRIORITY_ERROR_RETURN;
 447     SERVER_START_REQ( get_thread_info )
 448     {
 449         req->handle = hthread;
 450         req->tid_in = 0;
 451         if (!SERVER_CALL_ERR()) ret = req->priority;
 452     }
 453     SERVER_END_REQ;
 454     return ret;
 455 }
 456
 457
 458 /**********************************************************************
 459  * SetThreadPriority [KERNEL32.@]  Sets priority for thread.
 460  *
 461  * RETURNS
 462  *    Success: TRUE
 463  *    Failure: FALSE
 464  */
 465 BOOL WINAPI SetThreadPriority(
 466     HANDLE hthread, /* [in] Handle to thread */
 467     INT priority)   /* [in] Thread priority level */
 468 {
 469     BOOL ret;
 470     SERVER_START_REQ( set_thread_info )
 471     {
 472         req->handle   = hthread;
 473         req->priority = priority;
 474         req->mask     = SET_THREAD_INFO_PRIORITY;
 475         ret = !SERVER_CALL_ERR();
 476     }
 477     SERVER_END_REQ;
 478     return ret;
 479 }
 480
 481
 482 /**********************************************************************
 483  * GetThreadPriorityBoost [KERNEL32.877]  Returns priority boost for thread.
 484  *
 485  * Always reports that priority boost is disabled.
 486  *
 487  * RETURNS
 488  *    Success: TRUE.
 489  *    Failure: FALSE
 490  */
 491 BOOL WINAPI GetThreadPriorityBoost(
 492     HANDLE hthread, /* [in] Handle to thread */
 493     PBOOL pstate)   /* [out] pointer to var that receives the boost state */
 494 {
 495     if (pstate) *pstate = FALSE;
 496     return NO_ERROR;
 497 }
 498
 499
 500 /**********************************************************************
 501  * SetThreadPriorityBoost [KERNEL32.893]  Sets priority boost for thread.
 502  *
 503  * Priority boost is not implemented. Thsi function always returns
 504  * FALSE and sets last error to ERROR_CALL_NOT_IMPLEMENTED
 505  *
 506  * RETURNS
 507  *    Always returns FALSE to indicate a failure
 508  */
 509 BOOL WINAPI SetThreadPriorityBoost(
 510     HANDLE hthread, /* [in] Handle to thread */
 511     BOOL disable)   /* [in] TRUE to disable priority boost */
 512 {
 513     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 514     return FALSE;
 515 }
 516
 517
 518 /**********************************************************************
 519  *           SetThreadAffinityMask   (KERNEL32.669)
 520  */
 521 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 522 {
 523     DWORD ret;
 524     SERVER_START_REQ( set_thread_info )
 525     {
 526         req->handle   = hThread;
 527         req->affinity = dwThreadAffinityMask;
 528         req->mask     = SET_THREAD_INFO_AFFINITY;
 529         ret = !SERVER_CALL_ERR();
 530         /* FIXME: should return previous value */
 531     }
 532     SERVER_END_REQ;
 533     return ret;
 534 }
 535
 536
 537 /**********************************************************************
 538  * TerminateThread [KERNEL32.685]  Terminates a thread
 539  *
 540  * RETURNS
 541  *    Success: TRUE
 542  *    Failure: FALSE
 543  */
 544 BOOL WINAPI TerminateThread( HANDLE handle,    /* [in] Handle to thread */
 545                              DWORD exit_code)  /* [in] Exit code for thread */
 546 {
 547     NTSTATUS status = NtTerminateThread( handle, exit_code );
 548     if (status) SetLastError( RtlNtStatusToDosError(status) );
 549     return !status;
 550 }
 551
 552
 553 /**********************************************************************
 554  *              GetExitCodeThread (KERNEL32.@)
 555  *              GetExitCodeThread (WIN32S16.13)
 556  *
 557  * Gets termination status of thread.
 558  *
 559  * RETURNS
 560  *    Success: TRUE
 561  *    Failure: FALSE
 562  */
 563 BOOL WINAPI GetExitCodeThread(
 564     HANDLE hthread, /* [in]  Handle to thread */
 565     LPDWORD exitcode) /* [out] Address to receive termination status */
 566 {
 567     BOOL ret;
 568     SERVER_START_REQ( get_thread_info )
 569     {
 570         req->handle = hthread;
 571         req->tid_in = 0;
 572         ret = !SERVER_CALL_ERR();
 573         if (ret && exitcode) *exitcode = req->exit_code;
 574     }
 575     SERVER_END_REQ;
 576     return ret;
 577 }
 578
 579
 580 /**********************************************************************
 581  * ResumeThread [KERNEL32.587]  Resumes a thread.
 582  *
 583  * Decrements a thread's suspend count.  When count is zero, the
 584  * execution of the thread is resumed.
 585  *
 586  * RETURNS
 587  *    Success: Previous suspend count
 588  *    Failure: 0xFFFFFFFF
 589  *    Already running: 0
 590  */
 591 DWORD WINAPI ResumeThread(
 592     HANDLE hthread) /* [in] Identifies thread to restart */
 593 {
 594     DWORD ret = 0xffffffff;
 595     SERVER_START_REQ( resume_thread )
 596     {
 597         req->handle = hthread;
 598         if (!SERVER_CALL_ERR()) ret = req->count;
 599     }
 600     SERVER_END_REQ;
 601     return ret;
 602 }
 603
 604
 605 /**********************************************************************
 606  * SuspendThread [KERNEL32.681]  Suspends a thread.
 607  *
 608  * RETURNS
 609  *    Success: Previous suspend count
 610  *    Failure: 0xFFFFFFFF
 611  */
 612 DWORD WINAPI SuspendThread(
 613     HANDLE hthread) /* [in] Handle to the thread */
 614 {
 615     DWORD ret = 0xffffffff;
 616     SERVER_START_REQ( suspend_thread )
 617     {
 618         req->handle = hthread;
 619         if (!SERVER_CALL_ERR()) ret = req->count;
 620     }
 621     SERVER_END_REQ;
 622     return ret;
 623 }
 624
 625
 626 /***********************************************************************
 627  *              QueueUserAPC  (KERNEL32.566)
 628  */
 629 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 630 {
 631     DWORD ret;
 632     SERVER_START_REQ( queue_apc )
 633     {
 634         req->handle = hthread;
 635         req->user   = 1;
 636         req->func   = func;
 637         req->param  = (void *)data;
 638         ret = !SERVER_CALL_ERR();
 639     }
 640     SERVER_END_REQ;
 641     return ret;
 642 }
 643
 644
 645 /**********************************************************************
 646  * GetThreadTimes [KERNEL32.@]  Obtains timing information.
 647  *
 648  * NOTES
 649  *    What are the fields where these values are stored?
 650  *
 651  * RETURNS
 652  *    Success: TRUE
 653  *    Failure: FALSE
 654  */
 655 BOOL WINAPI GetThreadTimes(
 656     HANDLE thread,         /* [in]  Specifies the thread of interest */
 657     LPFILETIME creationtime, /* [out] When the thread was created */
 658     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 659     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 660     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 661 {
 662     FIXME("(0x%08x): stub\n",thread);
 663     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 664     return FALSE;
 665 }
 666
 667
 668 /**********************************************************************
 669  * VWin32_BoostThreadGroup [KERNEL.535]
 670  */
 671 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 672 {
 673     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 674 }
 675
 676 /**********************************************************************
 677  * VWin32_BoostThreadStatic [KERNEL.536]
 678  */
 679 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 680 {
 681     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 682 }
 683
 684
 685 /***********************************************************************
 686  *           GetThreadLocale    (KERNEL32.@)
 687  */
 688 LCID WINAPI GetThreadLocale(void)
 689 {
 690     LCID ret = NtCurrentTeb()->CurrentLocale;
 691     if (!ret) NtCurrentTeb()->CurrentLocale = ret = GetUserDefaultLCID();
 692     return ret;
 693 }
 694
 695
 696 /**********************************************************************
 697  * SetThreadLocale [KERNEL32.671]  Sets the calling threads current locale.
 698  *
 699  * RETURNS
 700  *    Success: TRUE
 701  *    Failure: FALSE
 702  *
 703  * FIXME
 704  *  check if lcid is a valid cp
 705  */
 706 BOOL WINAPI SetThreadLocale(
 707     LCID lcid)     /* [in] Locale identifier */
 708 {
 709     switch (lcid)
 710     {
 711       case LOCALE_SYSTEM_DEFAULT:
 712         lcid = GetSystemDefaultLCID();
 713         break;
 714       case LOCALE_USER_DEFAULT:
 715       case LOCALE_NEUTRAL:
 716         lcid = GetUserDefaultLCID();
 717         break;
 718     }
 719     NtCurrentTeb()->CurrentLocale = lcid;
 720     return TRUE;
 721 }
 722
 723
 724 /***********************************************************************
 725  * GetCurrentThread [KERNEL32.@]  Gets pseudohandle for current thread
 726  *
 727  * RETURNS
 728  *    Pseudohandle for the current thread
 729  */
 730 #undef GetCurrentThread
 731 HANDLE WINAPI GetCurrentThread(void)
 732 {
 733     return 0xfffffffe;
 734 }
 735
 736
 737 /***********************************************************************
 738  * ProcessIdToSessionId   (KERNEL32.@)
 739  * This function is available on Terminal Server 4SP4 and Windows 2000
 740  */
 741 BOOL WINAPI ProcessIdToSessionId( DWORD procid, DWORD *sessionid_ptr )
 742 {
 743         /* According to MSDN, if the calling process is not in a terminal
 744          * services environment, then the sessionid returned is zero.
 745          */
 746         *sessionid_ptr = 0;
 747         return TRUE;
 748 }
 749
 750
 751 #ifdef __i386__
 752
 753 /* void WINAPI SetLastError( DWORD error ); */
 754 __ASM_GLOBAL_FUNC( SetLastError,
 755                    "movl 4(%esp),%eax\n\t"
 756                    ".byte 0x64\n\t"
 757                    "movl %eax,0x60\n\t"
 758                    "ret $4" );
 759
 760 /* DWORD WINAPI GetLastError(void); */
 761 __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
 762
 763 /* DWORD WINAPI GetCurrentProcessId(void) */
 764 __ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" );
 765
 766 /* DWORD WINAPI GetCurrentThreadId(void) */
 767 __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
 768
 769 #else  /* __i386__ */
 770
 771 /**********************************************************************
 772  *              SetLastError (KERNEL.147)
 773  *              SetLastError (KERNEL32.@)
 774  *
 775  * Sets the last-error code.
 776  */
 777 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 778 {
 779     NtCurrentTeb()->last_error = error;
 780 }
 781
 782 /**********************************************************************
 783  *              GetLastError (KERNEL.10)
 784  *              GetLastError (KERNEL32.@)
 785  *              GetLastError (WIN32S16.10)
 786  *
 787  * Returns last-error code.
 788  */
 789 DWORD WINAPI GetLastError(void)
 790 {
 791     return NtCurrentTeb()->last_error;
 792 }
 793
 794 /***********************************************************************
 795  *              GetCurrentProcessId (KERNEL.471)
 796  *              GetCurrentProcessId (KERNEL32.@)
 797  *
 798  * Returns process identifier.
 799  */
 800 DWORD WINAPI GetCurrentProcessId(void)
 801 {
 802     return (DWORD)NtCurrentTeb()->pid;
 803 }
 804
 805 /***********************************************************************
 806  *              GetCurrentThreadId (KERNEL.462)
 807  *              GetCurrentThreadId (KERNEL32.@)
 808  *
 809  * Returns thread identifier.
 810  */
 811 DWORD WINAPI GetCurrentThreadId(void)
 812 {
 813     return (DWORD)NtCurrentTeb()->tid;
 814 }
 815
 816 #endif  /* __i386__ */