dlls/kernel/thread.c

   1 /*
   2  * Win32 threads
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <fcntl.h>
  26 #include <stdarg.h>
  27 #include <signal.h>
  28 #include <sys/types.h>
  29 #ifdef HAVE_SYS_TIMES_H
  30 #include <sys/times.h>
  31 #endif
  32 #ifdef HAVE_UNISTD_H
  33 # include <unistd.h>
  34 #endif
  35
  36 #include "ntstatus.h"
  37 #include "windef.h"
  38 #include "winbase.h"
  39 #include "winerror.h"
  40 #include "winnls.h"
  41 #include "module.h"
  42 #include "thread.h"
  43 #include "wine/winbase16.h"
  44 #include "wine/exception.h"
  45 #include "wine/library.h"
  46 #include "wine/pthread.h"
  47 #include "wine/server.h"
  48 #include "wine/debug.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  51 WINE_DECLARE_DEBUG_CHANNEL(relay);
  52
  53
  54 /***********************************************************************
  55  *           THREAD_InitStack
  56  *
  57  * Allocate the stack of a thread.
  58  */
  59 TEB *THREAD_InitStack( TEB *teb, DWORD stack_size )
  60 {
  61     DWORD old_prot;
  62     DWORD page_size = getpagesize();
  63     void *base;
  64
  65     stack_size = (stack_size + (page_size - 1)) & ~(page_size - 1);
  66     if (stack_size < 1024 * 1024) stack_size = 1024 * 1024;  /* Xlib needs a large stack */
  67
  68     if (!(base = VirtualAlloc( NULL, stack_size, MEM_COMMIT, PAGE_EXECUTE_READWRITE )))
  69         return NULL;
  70
  71     teb->DeallocationStack = base;
  72     teb->Tib.StackBase     = (char *)base + stack_size;
  73     teb->Tib.StackLimit    = base;  /* note: limit is lower than base since the stack grows down */
  74
  75     /* Setup guard pages */
  76
  77     VirtualProtect( base, 1, PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_prot );
  78     return teb;
  79 }
  80
  81
  82 struct new_thread_info
  83 {
  84     LPTHREAD_START_ROUTINE func;
  85     void                  *arg;
  86 };
  87
  88 /***********************************************************************
  89  *           THREAD_Start
  90  *
  91  * Start execution of a newly created thread. Does not return.
  92  */
  93 static void CALLBACK THREAD_Start( void *ptr )
  94 {
  95     struct new_thread_info *info = ptr;
  96     LPTHREAD_START_ROUTINE func = info->func;
  97     void *arg = info->arg;
  98
  99     RtlFreeHeap( GetProcessHeap(), 0, info );
 100
 101     if (TRACE_ON(relay))
 102         DPRINTF("%04lx:Starting thread (entryproc=%p)\n", GetCurrentThreadId(), func );
 103
 104     __TRY
 105     {
 106         MODULE_DllThreadAttach( NULL );
 107         ExitThread( func( arg ) );
 108     }
 109     __EXCEPT(UnhandledExceptionFilter)
 110     {
 111         TerminateThread( GetCurrentThread(), GetExceptionCode() );
 112     }
 113     __ENDTRY
 114 }
 115
 116
 117 /***********************************************************************
 118  *           CreateThread   (KERNEL32.@)
 119  */
 120 HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, SIZE_T stack,
 121                             LPTHREAD_START_ROUTINE start, LPVOID param,
 122                             DWORD flags, LPDWORD id )
 123 {
 124     HANDLE handle;
 125     CLIENT_ID client_id;
 126     NTSTATUS status;
 127     SIZE_T stack_reserve = 0, stack_commit = 0;
 128     struct new_thread_info *info;
 129
 130     if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*info) )))
 131     {
 132         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 133         return 0;
 134     }
 135     info->func = start;
 136     info->arg  = param;
 137
 138     if (flags & STACK_SIZE_PARAM_IS_A_RESERVATION) stack_reserve = stack;
 139     else stack_commit = stack;
 140
 141     status = RtlCreateUserThread( GetCurrentProcess(), NULL, (flags & CREATE_SUSPENDED) != 0,
 142                                   NULL, stack_reserve, stack_commit,
 143                                   THREAD_Start, info, &handle, &client_id );
 144     if (status == STATUS_SUCCESS)
 145     {
 146         if (id) *id = (DWORD)client_id.UniqueThread;
 147         if (sa && (sa->nLength >= sizeof(*sa)) && sa->bInheritHandle)
 148             SetHandleInformation( handle, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT );
 149     }
 150     else
 151     {
 152         RtlFreeHeap( GetProcessHeap(), 0, info );
 153         SetLastError( RtlNtStatusToDosError(status) );
 154         handle = 0;
 155     }
 156     return handle;
 157 }
 158
 159
 160 /***********************************************************************
 161  * OpenThread  [KERNEL32.@]   Retrieves a handle to a thread from its thread id
 162  */
 163 HANDLE WINAPI OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId )
 164 {
 165     HANDLE ret = 0;
 166     SERVER_START_REQ( open_thread )
 167     {
 168         req->tid     = dwThreadId;
 169         req->access  = dwDesiredAccess;
 170         req->inherit = bInheritHandle;
 171         if (!wine_server_call_err( req )) ret = reply->handle;
 172     }
 173     SERVER_END_REQ;
 174     return ret;
 175 }
 176
 177
 178 /***********************************************************************
 179  * ExitThread [KERNEL32.@]  Ends a thread
 180  *
 181  * RETURNS
 182  *    None
 183  */
 184 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 185 {
 186     BOOL last;
 187     SERVER_START_REQ( terminate_thread )
 188     {
 189         /* send the exit code to the server */
 190         req->handle    = GetCurrentThread();
 191         req->exit_code = code;
 192         wine_server_call( req );
 193         last = reply->last;
 194     }
 195     SERVER_END_REQ;
 196
 197     if (last)
 198     {
 199         LdrShutdownProcess();
 200         exit( code );
 201     }
 202     else
 203     {
 204         struct wine_pthread_thread_info info;
 205         sigset_t block_set;
 206         ULONG size;
 207
 208         LdrShutdownThread();
 209         RtlAcquirePebLock();
 210         RemoveEntryList( &NtCurrentTeb()->TlsLinks );
 211         RtlReleasePebLock();
 212
 213         info.stack_base  = NtCurrentTeb()->DeallocationStack;
 214         info.teb_base    = NtCurrentTeb();
 215         info.teb_sel     = wine_get_fs();
 216         info.exit_status = code;
 217
 218         size = 0;
 219         NtFreeVirtualMemory( GetCurrentProcess(), &info.stack_base, &size, MEM_RELEASE | MEM_SYSTEM );
 220         info.stack_size = size;
 221
 222         size = 0;
 223         NtFreeVirtualMemory( GetCurrentProcess(), &info.teb_base, &size, MEM_RELEASE | MEM_SYSTEM );
 224         info.teb_size = size;
 225
 226         /* block the async signals */
 227         sigemptyset( &block_set );
 228         sigaddset( &block_set, SIGALRM );
 229         sigaddset( &block_set, SIGIO );
 230         sigaddset( &block_set, SIGINT );
 231         sigaddset( &block_set, SIGHUP );
 232         sigaddset( &block_set, SIGUSR1 );
 233         sigaddset( &block_set, SIGUSR2 );
 234         sigaddset( &block_set, SIGTERM );
 235         sigprocmask( SIG_BLOCK, &block_set, NULL );
 236
 237         close( NtCurrentTeb()->wait_fd[0] );
 238         close( NtCurrentTeb()->wait_fd[1] );
 239         close( NtCurrentTeb()->reply_fd );
 240         close( NtCurrentTeb()->request_fd );
 241
 242         wine_pthread_exit_thread( &info );
 243     }
 244 }
 245
 246
 247 /**********************************************************************
 248  * TerminateThread [KERNEL32.@]  Terminates a thread
 249  *
 250  * RETURNS
 251  *    Success: TRUE
 252  *    Failure: FALSE
 253  */
 254 BOOL WINAPI TerminateThread( HANDLE handle,    /* [in] Handle to thread */
 255                              DWORD exit_code)  /* [in] Exit code for thread */
 256 {
 257     NTSTATUS status = NtTerminateThread( handle, exit_code );
 258     if (status) SetLastError( RtlNtStatusToDosError(status) );
 259     return !status;
 260 }
 261
 262
 263 /***********************************************************************
 264  *           FreeLibraryAndExitThread (KERNEL32.@)
 265  */
 266 void WINAPI FreeLibraryAndExitThread(HINSTANCE hLibModule, DWORD dwExitCode)
 267 {
 268     FreeLibrary(hLibModule);
 269     ExitThread(dwExitCode);
 270 }
 271
 272
 273 /**********************************************************************
 274  *              GetExitCodeThread (KERNEL32.@)
 275  *
 276  * Gets termination status of thread.
 277  *
 278  * RETURNS
 279  *    Success: TRUE
 280  *    Failure: FALSE
 281  */
 282 BOOL WINAPI GetExitCodeThread(
 283     HANDLE hthread, /* [in]  Handle to thread */
 284     LPDWORD exitcode) /* [out] Address to receive termination status */
 285 {
 286     THREAD_BASIC_INFORMATION info;
 287     NTSTATUS status = NtQueryInformationThread( hthread, ThreadBasicInformation,
 288                                                 &info, sizeof(info), NULL );
 289
 290     if (status)
 291     {
 292         SetLastError( RtlNtStatusToDosError(status) );
 293         return FALSE;
 294     }
 295     if (exitcode) *exitcode = info.ExitStatus;
 296     return TRUE;
 297 }
 298
 299
 300 /***********************************************************************
 301  * SetThreadContext [KERNEL32.@]  Sets context of thread.
 302  *
 303  * RETURNS
 304  *    Success: TRUE
 305  *    Failure: FALSE
 306  */
 307 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 308                               const CONTEXT *context ) /* [in] Address of context structure */
 309 {
 310     NTSTATUS status = NtSetContextThread( handle, context );
 311     if (status) SetLastError( RtlNtStatusToDosError(status) );
 312     return !status;
 313 }
 314
 315
 316 /***********************************************************************
 317  * GetThreadContext [KERNEL32.@]  Retrieves context of thread.
 318  *
 319  * RETURNS
 320  *    Success: TRUE
 321  *    Failure: FALSE
 322  */
 323 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 324                               CONTEXT *context ) /* [out] Address of context structure */
 325 {
 326     NTSTATUS status = NtGetContextThread( handle, context );
 327     if (status) SetLastError( RtlNtStatusToDosError(status) );
 328     return !status;
 329 }
 330
 331
 332 /**********************************************************************
 333  * SuspendThread [KERNEL32.@]  Suspends a thread.
 334  *
 335  * RETURNS
 336  *    Success: Previous suspend count
 337  *    Failure: 0xFFFFFFFF
 338  */
 339 DWORD WINAPI SuspendThread( HANDLE hthread ) /* [in] Handle to the thread */
 340 {
 341     DWORD ret;
 342     NTSTATUS status = NtSuspendThread( hthread, &ret );
 343
 344     if (status)
 345     {
 346         ret = ~0U;
 347         SetLastError( RtlNtStatusToDosError(status) );
 348     }
 349     return ret;
 350 }
 351
 352
 353 /**********************************************************************
 354  * ResumeThread [KERNEL32.@]  Resumes a thread.
 355  *
 356  * Decrements a thread's suspend count.  When count is zero, the
 357  * execution of the thread is resumed.
 358  *
 359  * RETURNS
 360  *    Success: Previous suspend count
 361  *    Failure: 0xFFFFFFFF
 362  *    Already running: 0
 363  */
 364 DWORD WINAPI ResumeThread( HANDLE hthread ) /* [in] Identifies thread to restart */
 365 {
 366     DWORD ret;
 367     NTSTATUS status = NtResumeThread( hthread, &ret );
 368
 369     if (status)
 370     {
 371         ret = ~0U;
 372         SetLastError( RtlNtStatusToDosError(status) );
 373     }
 374     return ret;
 375 }
 376
 377
 378 /**********************************************************************
 379  * GetThreadPriority [KERNEL32.@]  Returns priority for thread.
 380  *
 381  * RETURNS
 382  *    Success: Thread's priority level.
 383  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 384  */
 385 INT WINAPI GetThreadPriority(
 386     HANDLE hthread) /* [in] Handle to thread */
 387 {
 388     THREAD_BASIC_INFORMATION info;
 389     NTSTATUS status = NtQueryInformationThread( hthread, ThreadBasicInformation,
 390                                                 &info, sizeof(info), NULL );
 391
 392     if (status)
 393     {
 394         SetLastError( RtlNtStatusToDosError(status) );
 395         return THREAD_PRIORITY_ERROR_RETURN;
 396     }
 397     return info.Priority;
 398 }
 399
 400
 401 /**********************************************************************
 402  * SetThreadPriority [KERNEL32.@]  Sets priority for thread.
 403  *
 404  * RETURNS
 405  *    Success: TRUE
 406  *    Failure: FALSE
 407  */
 408 BOOL WINAPI SetThreadPriority(
 409     HANDLE hthread, /* [in] Handle to thread */
 410     INT priority)   /* [in] Thread priority level */
 411 {
 412     BOOL ret;
 413     SERVER_START_REQ( set_thread_info )
 414     {
 415         req->handle   = hthread;
 416         req->priority = priority;
 417         req->mask     = SET_THREAD_INFO_PRIORITY;
 418         ret = !wine_server_call_err( req );
 419     }
 420     SERVER_END_REQ;
 421     return ret;
 422 }
 423
 424
 425 /**********************************************************************
 426  * GetThreadPriorityBoost [KERNEL32.@]  Returns priority boost for thread.
 427  *
 428  * Always reports that priority boost is disabled.
 429  *
 430  * RETURNS
 431  *    Success: TRUE.
 432  *    Failure: FALSE
 433  */
 434 BOOL WINAPI GetThreadPriorityBoost(
 435     HANDLE hthread, /* [in] Handle to thread */
 436     PBOOL pstate)   /* [out] pointer to var that receives the boost state */
 437 {
 438     if (pstate) *pstate = FALSE;
 439     return NO_ERROR;
 440 }
 441
 442
 443 /**********************************************************************
 444  * SetThreadPriorityBoost [KERNEL32.@]  Sets priority boost for thread.
 445  *
 446  * Priority boost is not implemented. Thsi function always returns
 447  * FALSE and sets last error to ERROR_CALL_NOT_IMPLEMENTED
 448  *
 449  * RETURNS
 450  *    Always returns FALSE to indicate a failure
 451  */
 452 BOOL WINAPI SetThreadPriorityBoost(
 453     HANDLE hthread, /* [in] Handle to thread */
 454     BOOL disable)   /* [in] TRUE to disable priority boost */
 455 {
 456     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 457     return FALSE;
 458 }
 459
 460
 461 /**********************************************************************
 462  *           SetThreadAffinityMask   (KERNEL32.@)
 463  */
 464 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 465 {
 466     DWORD ret;
 467     SERVER_START_REQ( set_thread_info )
 468     {
 469         req->handle   = hThread;
 470         req->affinity = dwThreadAffinityMask;
 471         req->mask     = SET_THREAD_INFO_AFFINITY;
 472         ret = !wine_server_call_err( req );
 473         /* FIXME: should return previous value */
 474     }
 475     SERVER_END_REQ;
 476     return ret;
 477 }
 478
 479
 480 /**********************************************************************
 481  * SetThreadIdealProcessor [KERNEL32.@]  Obtains timing information.
 482  *
 483  * RETURNS
 484  *    Success: Value of last call to SetThreadIdealProcessor
 485  *    Failure: -1
 486  */
 487 DWORD WINAPI SetThreadIdealProcessor(
 488     HANDLE hThread,          /* [in] Specifies the thread of interest */
 489     DWORD dwIdealProcessor)  /* [in] Specifies the new preferred processor */
 490 {
 491     FIXME("(%p): stub\n",hThread);
 492     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 493     return -1L;
 494 }
 495
 496
 497 /* callback for QueueUserAPC */
 498 static void CALLBACK call_user_apc( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3 )
 499 {
 500     PAPCFUNC func = (PAPCFUNC)arg1;
 501     func( arg2 );
 502 }
 503
 504 /***********************************************************************
 505  *              QueueUserAPC  (KERNEL32.@)
 506  */
 507 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 508 {
 509     NTSTATUS status = NtQueueApcThread( hthread, call_user_apc, (ULONG_PTR)func, data, 0 );
 510
 511     if (status) SetLastError( RtlNtStatusToDosError(status) );
 512     return !status;
 513 }
 514
 515
 516 /**********************************************************************
 517  * GetThreadTimes [KERNEL32.@]  Obtains timing information.
 518  *
 519  * RETURNS
 520  *    Success: TRUE
 521  *    Failure: FALSE
 522  */
 523 BOOL WINAPI GetThreadTimes(
 524     HANDLE thread,         /* [in]  Specifies the thread of interest */
 525     LPFILETIME creationtime, /* [out] When the thread was created */
 526     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 527     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 528     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 529 {
 530     BOOL ret = TRUE;
 531
 532     if (creationtime || exittime)
 533     {
 534         /* We need to do a server call to get the creation time or exit time */
 535         /* This works on any thread */
 536
 537         SERVER_START_REQ( get_thread_info )
 538         {
 539             req->handle = thread;
 540             req->tid_in = 0;
 541             if ((ret = !wine_server_call_err( req )))
 542             {
 543                 if (creationtime)
 544                     RtlSecondsSince1970ToTime( reply->creation_time, (LARGE_INTEGER*)creationtime );
 545                 if (exittime)
 546                     RtlSecondsSince1970ToTime( reply->exit_time, (LARGE_INTEGER*)exittime );
 547             }
 548         }
 549         SERVER_END_REQ;
 550     }
 551     if (ret && (kerneltime || usertime))
 552     {
 553         /* We call times(2) for kernel time or user time */
 554         /* We can only (portably) do this for the current thread */
 555         if (thread == GetCurrentThread())
 556         {
 557             ULONGLONG time;
 558             struct tms time_buf;
 559             long clocks_per_sec = sysconf(_SC_CLK_TCK);
 560
 561             times(&time_buf);
 562             if (kerneltime)
 563             {
 564                 time = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 565                 kerneltime->dwHighDateTime = time >> 32;
 566                 kerneltime->dwLowDateTime = (DWORD)time;
 567             }
 568             if (usertime)
 569             {
 570                 time = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 571                 usertime->dwHighDateTime = time >> 32;
 572                 usertime->dwLowDateTime = (DWORD)time;
 573             }
 574         }
 575         else
 576         {
 577             if (kerneltime) kerneltime->dwHighDateTime = kerneltime->dwLowDateTime = 0;
 578             if (usertime) usertime->dwHighDateTime = usertime->dwLowDateTime = 0;
 579             FIXME("Cannot get kerneltime or usertime of other threads\n");
 580         }
 581     }
 582     return ret;
 583 }
 584
 585
 586 /**********************************************************************
 587  * VWin32_BoostThreadGroup [KERNEL.535]
 588  */
 589 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 590 {
 591     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 592 }
 593
 594
 595 /**********************************************************************
 596  * VWin32_BoostThreadStatic [KERNEL.536]
 597  */
 598 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 599 {
 600     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 601 }
 602
 603
 604 /***********************************************************************
 605  * GetCurrentThread [KERNEL32.@]  Gets pseudohandle for current thread
 606  *
 607  * RETURNS
 608  *    Pseudohandle for the current thread
 609  */
 610 #undef GetCurrentThread
 611 HANDLE WINAPI GetCurrentThread(void)
 612 {
 613     return (HANDLE)0xfffffffe;
 614 }
 615
 616
 617 #ifdef __i386__
 618
 619 /***********************************************************************
 620  *              SetLastError (KERNEL.147)
 621  *              SetLastError (KERNEL32.@)
 622  */
 623 /* void WINAPI SetLastError( DWORD error ); */
 624 __ASM_GLOBAL_FUNC( SetLastError,
 625                    "movl 4(%esp),%eax\n\t"
 626                    ".byte 0x64\n\t"
 627                    "movl %eax,0x34\n\t"
 628                    "ret $4" );
 629
 630 /***********************************************************************
 631  *              GetLastError (KERNEL.148)
 632  *              GetLastError (KERNEL32.@)
 633  */
 634 /* DWORD WINAPI GetLastError(void); */
 635 __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x34,%eax\n\tret" );
 636
 637 /***********************************************************************
 638  *              GetCurrentProcessId (KERNEL.471)
 639  *              GetCurrentProcessId (KERNEL32.@)
 640  */
 641 /* DWORD WINAPI GetCurrentProcessId(void) */
 642 __ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" );
 643
 644 /***********************************************************************
 645  *              GetCurrentThreadId (KERNEL.462)
 646  *              GetCurrentThreadId (KERNEL32.@)
 647  */
 648 /* DWORD WINAPI GetCurrentThreadId(void) */
 649 __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
 650
 651 #else  /* __i386__ */
 652
 653 /**********************************************************************
 654  *              SetLastError (KERNEL.147)
 655  *              SetLastError (KERNEL32.@)
 656  *
 657  * Sets the last-error code.
 658  */
 659 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 660 {
 661     NtCurrentTeb()->LastErrorValue = error;
 662 }
 663
 664 /**********************************************************************
 665  *              GetLastError (KERNEL.148)
 666  *              GetLastError (KERNEL32.@)
 667  *
 668  * Returns last-error code.
 669  */
 670 DWORD WINAPI GetLastError(void)
 671 {
 672     return NtCurrentTeb()->LastErrorValue;
 673 }
 674
 675 /***********************************************************************
 676  *              GetCurrentProcessId (KERNEL.471)
 677  *              GetCurrentProcessId (KERNEL32.@)
 678  *
 679  * Returns process identifier.
 680  */
 681 DWORD WINAPI GetCurrentProcessId(void)
 682 {
 683     return (DWORD)NtCurrentTeb()->ClientId.UniqueProcess;
 684 }
 685
 686 /***********************************************************************
 687  *              GetCurrentThreadId (KERNEL.462)
 688  *              GetCurrentThreadId (KERNEL32.@)
 689  *
 690  * Returns thread identifier.
 691  */
 692 DWORD WINAPI GetCurrentThreadId(void)
 693 {
 694     return (DWORD)NtCurrentTeb()->ClientId.UniqueThread;
 695 }
 696
 697 #endif  /* __i386__ */