dlls/kernel32/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 <sys/types.h>
  28 #ifdef HAVE_UNISTD_H
  29 # include <unistd.h>
  30 #endif
  31
  32 #include "ntstatus.h"
  33 #define WIN32_NO_STATUS
  34 #include "windef.h"
  35 #include "winbase.h"
  36 #include "winerror.h"
  37 #include "winternl.h"
  38 #include "wine/exception.h"
  39 #include "wine/library.h"
  40 #include "wine/server.h"
  41 #include "wine/debug.h"
  42
  43 #include "kernel_private.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  46
  47
  48 /***********************************************************************
  49  *           CreateThread   (KERNEL32.@)
  50  */
  51 HANDLE WINAPI DECLSPEC_HOTPATCH CreateThread( SECURITY_ATTRIBUTES *sa, SIZE_T stack, LPTHREAD_START_ROUTINE start,
  52                                               LPVOID param, DWORD flags, LPDWORD id )
  53 {
  54      return CreateRemoteThread( GetCurrentProcess(),
  55                                 sa, stack, start, param, flags, id );
  56 }
  57
  58
  59 /***************************************************************************
  60  *                  CreateRemoteThread   (KERNEL32.@)
  61  *
  62  * Creates a thread that runs in the address space of another process
  63  *
  64  * PARAMS
  65  *
  66  * RETURNS
  67  *   Success: Handle to the new thread.
  68  *   Failure: NULL. Use GetLastError() to find the error cause.
  69  *
  70  * BUGS
  71  *   Improper memory allocation: there's no ability to free new_thread_info
  72  *   in other process.
  73  *   Bad start address for RtlCreateUserThread because the library
  74  *   may be loaded at different address in other process.
  75  */
  76 HANDLE WINAPI CreateRemoteThread( HANDLE hProcess, SECURITY_ATTRIBUTES *sa, SIZE_T stack,
  77                                   LPTHREAD_START_ROUTINE start, LPVOID param,
  78                                   DWORD flags, LPDWORD id )
  79 {
  80     HANDLE handle;
  81     CLIENT_ID client_id;
  82     NTSTATUS status;
  83     SIZE_T stack_reserve = 0, stack_commit = 0;
  84
  85     if (flags & STACK_SIZE_PARAM_IS_A_RESERVATION) stack_reserve = stack;
  86     else stack_commit = stack;
  87
  88     status = RtlCreateUserThread( hProcess, NULL, TRUE,
  89                                   NULL, stack_reserve, stack_commit,
  90                                   (PRTL_THREAD_START_ROUTINE)start, param, &handle, &client_id );
  91     if (status == STATUS_SUCCESS)
  92     {
  93         if (id) *id = HandleToULong(client_id.UniqueThread);
  94         if (sa && (sa->nLength >= sizeof(*sa)) && sa->bInheritHandle)
  95             SetHandleInformation( handle, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT );
  96         if (!(flags & CREATE_SUSPENDED))
  97         {
  98             ULONG ret;
  99             if (NtResumeThread( handle, &ret ))
 100             {
 101                 NtClose( handle );
 102                 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 103                 handle = 0;
 104             }
 105         }
 106     }
 107     else
 108     {
 109         SetLastError( RtlNtStatusToDosError(status) );
 110         handle = 0;
 111     }
 112     return handle;
 113 }
 114
 115
 116 /***********************************************************************
 117  * OpenThread  [KERNEL32.@]   Retrieves a handle to a thread from its thread id
 118  */
 119 HANDLE WINAPI OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId )
 120 {
 121     NTSTATUS status;
 122     HANDLE handle;
 123     OBJECT_ATTRIBUTES attr;
 124     CLIENT_ID cid;
 125
 126     attr.Length = sizeof(attr);
 127     attr.RootDirectory = 0;
 128     attr.Attributes = bInheritHandle ? OBJ_INHERIT : 0;
 129     attr.ObjectName = NULL;
 130     attr.SecurityDescriptor = NULL;
 131     attr.SecurityQualityOfService = NULL;
 132
 133     cid.UniqueProcess = 0; /* FIXME */
 134     cid.UniqueThread = ULongToHandle(dwThreadId);
 135     status = NtOpenThread( &handle, dwDesiredAccess, &attr, &cid );
 136     if (status)
 137     {
 138         SetLastError( RtlNtStatusToDosError(status) );
 139         handle = 0;
 140     }
 141     return handle;
 142 }
 143
 144
 145 /***********************************************************************
 146  * ExitThread [KERNEL32.@]  Ends a thread
 147  *
 148  * RETURNS
 149  *    None
 150  */
 151 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 152 {
 153     RtlExitUserThread( code );
 154 }
 155
 156
 157 /**********************************************************************
 158  * TerminateThread [KERNEL32.@]  Terminates a thread
 159  *
 160  * RETURNS
 161  *    Success: TRUE
 162  *    Failure: FALSE
 163  */
 164 BOOL WINAPI TerminateThread( HANDLE handle,    /* [in] Handle to thread */
 165                              DWORD exit_code)  /* [in] Exit code for thread */
 166 {
 167     NTSTATUS status = NtTerminateThread( handle, exit_code );
 168     if (status) SetLastError( RtlNtStatusToDosError(status) );
 169     return !status;
 170 }
 171
 172
 173 /***********************************************************************
 174  *           FreeLibraryAndExitThread (KERNEL32.@)
 175  */
 176 void WINAPI FreeLibraryAndExitThread(HINSTANCE hLibModule, DWORD dwExitCode)
 177 {
 178     FreeLibrary(hLibModule);
 179     ExitThread(dwExitCode);
 180 }
 181
 182
 183 /**********************************************************************
 184  *              GetExitCodeThread (KERNEL32.@)
 185  *
 186  * Gets termination status of thread.
 187  *
 188  * RETURNS
 189  *    Success: TRUE
 190  *    Failure: FALSE
 191  */
 192 BOOL WINAPI GetExitCodeThread(
 193     HANDLE hthread, /* [in]  Handle to thread */
 194     LPDWORD exitcode) /* [out] Address to receive termination status */
 195 {
 196     THREAD_BASIC_INFORMATION info;
 197     NTSTATUS status = NtQueryInformationThread( hthread, ThreadBasicInformation,
 198                                                 &info, sizeof(info), NULL );
 199
 200     if (status)
 201     {
 202         SetLastError( RtlNtStatusToDosError(status) );
 203         return FALSE;
 204     }
 205     if (exitcode) *exitcode = info.ExitStatus;
 206     return TRUE;
 207 }
 208
 209
 210 /***********************************************************************
 211  * SetThreadContext [KERNEL32.@]  Sets context of thread.
 212  *
 213  * RETURNS
 214  *    Success: TRUE
 215  *    Failure: FALSE
 216  */
 217 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 218                               const CONTEXT *context ) /* [in] Address of context structure */
 219 {
 220     NTSTATUS status = NtSetContextThread( handle, context );
 221     if (status) SetLastError( RtlNtStatusToDosError(status) );
 222     return !status;
 223 }
 224
 225
 226 /***********************************************************************
 227  * GetThreadContext [KERNEL32.@]  Retrieves context of thread.
 228  *
 229  * RETURNS
 230  *    Success: TRUE
 231  *    Failure: FALSE
 232  */
 233 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 234                               CONTEXT *context ) /* [out] Address of context structure */
 235 {
 236     NTSTATUS status = NtGetContextThread( handle, context );
 237     if (status) SetLastError( RtlNtStatusToDosError(status) );
 238     return !status;
 239 }
 240
 241
 242 /**********************************************************************
 243  * SuspendThread [KERNEL32.@]  Suspends a thread.
 244  *
 245  * RETURNS
 246  *    Success: Previous suspend count
 247  *    Failure: 0xFFFFFFFF
 248  */
 249 DWORD WINAPI SuspendThread( HANDLE hthread ) /* [in] Handle to the thread */
 250 {
 251     DWORD ret;
 252     NTSTATUS status = NtSuspendThread( hthread, &ret );
 253
 254     if (status)
 255     {
 256         ret = ~0U;
 257         SetLastError( RtlNtStatusToDosError(status) );
 258     }
 259     return ret;
 260 }
 261
 262
 263 /**********************************************************************
 264  * ResumeThread [KERNEL32.@]  Resumes a thread.
 265  *
 266  * Decrements a thread's suspend count.  When count is zero, the
 267  * execution of the thread is resumed.
 268  *
 269  * RETURNS
 270  *    Success: Previous suspend count
 271  *    Failure: 0xFFFFFFFF
 272  *    Already running: 0
 273  */
 274 DWORD WINAPI ResumeThread( HANDLE hthread ) /* [in] Identifies thread to restart */
 275 {
 276     DWORD ret;
 277     NTSTATUS status = NtResumeThread( hthread, &ret );
 278
 279     if (status)
 280     {
 281         ret = ~0U;
 282         SetLastError( RtlNtStatusToDosError(status) );
 283     }
 284     return ret;
 285 }
 286
 287
 288 /**********************************************************************
 289  * GetThreadPriority [KERNEL32.@]  Returns priority for thread.
 290  *
 291  * RETURNS
 292  *    Success: Thread's priority level.
 293  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 294  */
 295 INT WINAPI GetThreadPriority(
 296     HANDLE hthread) /* [in] Handle to thread */
 297 {
 298     THREAD_BASIC_INFORMATION info;
 299     NTSTATUS status = NtQueryInformationThread( hthread, ThreadBasicInformation,
 300                                                 &info, sizeof(info), NULL );
 301
 302     if (status)
 303     {
 304         SetLastError( RtlNtStatusToDosError(status) );
 305         return THREAD_PRIORITY_ERROR_RETURN;
 306     }
 307     return info.Priority;
 308 }
 309
 310
 311 /**********************************************************************
 312  * SetThreadPriority [KERNEL32.@]  Sets priority for thread.
 313  *
 314  * RETURNS
 315  *    Success: TRUE
 316  *    Failure: FALSE
 317  */
 318 BOOL WINAPI SetThreadPriority(
 319     HANDLE hthread, /* [in] Handle to thread */
 320     INT priority)   /* [in] Thread priority level */
 321 {
 322     DWORD       prio = priority;
 323     NTSTATUS    status;
 324
 325     status = NtSetInformationThread(hthread, ThreadBasePriority,
 326                                     &prio, sizeof(prio));
 327
 328     if (status)
 329     {
 330         SetLastError( RtlNtStatusToDosError(status) );
 331         return FALSE;
 332     }
 333
 334     return TRUE;
 335 }
 336
 337
 338 /**********************************************************************
 339  * GetThreadPriorityBoost [KERNEL32.@]  Returns priority boost for thread.
 340  *
 341  * Always reports that priority boost is disabled.
 342  *
 343  * RETURNS
 344  *    Success: TRUE.
 345  *    Failure: FALSE
 346  */
 347 BOOL WINAPI GetThreadPriorityBoost(
 348     HANDLE hthread, /* [in] Handle to thread */
 349     PBOOL pstate)   /* [out] pointer to var that receives the boost state */
 350 {
 351     if (pstate) *pstate = FALSE;
 352     return TRUE;
 353 }
 354
 355
 356 /**********************************************************************
 357  * SetThreadPriorityBoost [KERNEL32.@]  Sets priority boost for thread.
 358  *
 359  * Priority boost is not implemented, but we return TRUE
 360  * anyway because some games crash otherwise.
 361  */
 362 BOOL WINAPI SetThreadPriorityBoost(
 363     HANDLE hthread, /* [in] Handle to thread */
 364     BOOL disable)   /* [in] TRUE to disable priority boost */
 365 {
 366     return TRUE;
 367 }
 368
 369
 370 /**********************************************************************
 371  *           SetThreadStackGuarantee   (KERNEL32.@)
 372  */
 373 BOOL WINAPI SetThreadStackGuarantee(PULONG stacksize)
 374 {
 375     static int once;
 376     if (once++ == 0)
 377         FIXME("(%p): stub\n", stacksize);
 378     return TRUE;
 379 }
 380
 381 /**********************************************************************
 382  *           SetThreadAffinityMask   (KERNEL32.@)
 383  */
 384 DWORD_PTR WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD_PTR dwThreadAffinityMask )
 385 {
 386     NTSTATUS                    status;
 387     THREAD_BASIC_INFORMATION    tbi;
 388
 389     status = NtQueryInformationThread( hThread, ThreadBasicInformation,
 390                                        &tbi, sizeof(tbi), NULL );
 391     if (status)
 392     {
 393         SetLastError( RtlNtStatusToDosError(status) );
 394         return 0;
 395     }
 396     status = NtSetInformationThread( hThread, ThreadAffinityMask,
 397                                      &dwThreadAffinityMask,
 398                                      sizeof(dwThreadAffinityMask));
 399     if (status)
 400     {
 401         SetLastError( RtlNtStatusToDosError(status) );
 402         return 0;
 403     }
 404     return tbi.AffinityMask;
 405 }
 406
 407
 408 /**********************************************************************
 409  * SetThreadIdealProcessor [KERNEL32.@]  Sets preferred processor for thread.
 410  *
 411  * RETURNS
 412  *    Success: Value of last call to SetThreadIdealProcessor
 413  *    Failure: -1
 414  */
 415 DWORD WINAPI SetThreadIdealProcessor(
 416     HANDLE hThread,          /* [in] Specifies the thread of interest */
 417     DWORD dwIdealProcessor)  /* [in] Specifies the new preferred processor */
 418 {
 419     FIXME("(%p): stub\n",hThread);
 420     if (dwIdealProcessor > MAXIMUM_PROCESSORS)
 421     {
 422         SetLastError(ERROR_INVALID_PARAMETER);
 423         return ~0u;
 424     }
 425     return 0;
 426 }
 427
 428
 429 /***********************************************************************
 430  *           GetThreadSelectorEntry   (KERNEL32.@)
 431  */
 432 BOOL WINAPI GetThreadSelectorEntry( HANDLE hthread, DWORD sel, LPLDT_ENTRY ldtent )
 433 {
 434     THREAD_DESCRIPTOR_INFORMATION tdi;
 435     NTSTATUS status;
 436
 437     tdi.Selector = sel;
 438     status = NtQueryInformationThread( hthread, ThreadDescriptorTableEntry, &tdi, sizeof(tdi), NULL);
 439     if (status)
 440     {
 441         SetLastError( RtlNtStatusToDosError(status) );
 442         return FALSE;
 443     }
 444     *ldtent = tdi.Entry;
 445     return TRUE;
 446 }
 447
 448
 449 /* callback for QueueUserAPC */
 450 static void CALLBACK call_user_apc( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3 )
 451 {
 452     PAPCFUNC func = (PAPCFUNC)arg1;
 453     func( arg2 );
 454 }
 455
 456 /***********************************************************************
 457  *              QueueUserAPC  (KERNEL32.@)
 458  */
 459 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 460 {
 461     NTSTATUS status = NtQueueApcThread( hthread, call_user_apc, (ULONG_PTR)func, data, 0 );
 462
 463     if (status) SetLastError( RtlNtStatusToDosError(status) );
 464     return !status;
 465 }
 466
 467 /***********************************************************************
 468  *              QueueUserWorkItem  (KERNEL32.@)
 469  */
 470 BOOL WINAPI QueueUserWorkItem( LPTHREAD_START_ROUTINE Function, PVOID Context, ULONG Flags )
 471 {
 472     NTSTATUS status;
 473
 474     TRACE("(%p,%p,0x%08x)\n", Function, Context, Flags);
 475
 476     status = RtlQueueWorkItem( Function, Context, Flags );
 477
 478     if (status) SetLastError( RtlNtStatusToDosError(status) );
 479     return !status;
 480 }
 481
 482 /**********************************************************************
 483  * GetThreadTimes [KERNEL32.@]  Obtains timing information.
 484  *
 485  * RETURNS
 486  *    Success: TRUE
 487  *    Failure: FALSE
 488  */
 489 BOOL WINAPI GetThreadTimes(
 490     HANDLE thread,         /* [in]  Specifies the thread of interest */
 491     LPFILETIME creationtime, /* [out] When the thread was created */
 492     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 493     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 494     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 495 {
 496     KERNEL_USER_TIMES   kusrt;
 497     NTSTATUS            status;
 498
 499     status = NtQueryInformationThread(thread, ThreadTimes, &kusrt,
 500                                       sizeof(kusrt), NULL);
 501     if (status)
 502     {
 503         SetLastError( RtlNtStatusToDosError(status) );
 504         return FALSE;
 505     }
 506     if (creationtime)
 507     {
 508         creationtime->dwLowDateTime = kusrt.CreateTime.u.LowPart;
 509         creationtime->dwHighDateTime = kusrt.CreateTime.u.HighPart;
 510     }
 511     if (exittime)
 512     {
 513         exittime->dwLowDateTime = kusrt.ExitTime.u.LowPart;
 514         exittime->dwHighDateTime = kusrt.ExitTime.u.HighPart;
 515     }
 516     if (kerneltime)
 517     {
 518         kerneltime->dwLowDateTime = kusrt.KernelTime.u.LowPart;
 519         kerneltime->dwHighDateTime = kusrt.KernelTime.u.HighPart;
 520     }
 521     if (usertime)
 522     {
 523         usertime->dwLowDateTime = kusrt.UserTime.u.LowPart;
 524         usertime->dwHighDateTime = kusrt.UserTime.u.HighPart;
 525     }
 526
 527     return TRUE;
 528 }
 529
 530 /**********************************************************************
 531  * GetThreadId [KERNEL32.@]
 532  *
 533  * Retrieve the identifier of a thread.
 534  *
 535  * PARAMS
 536  *  Thread [I] The thread to retrieve the identifier of.
 537  *
 538  * RETURNS
 539  *    Success: Identifier of the target thread.
 540  *    Failure: 0
 541  */
 542 DWORD WINAPI GetThreadId(HANDLE Thread)
 543 {
 544     THREAD_BASIC_INFORMATION tbi;
 545     NTSTATUS status;
 546
 547     TRACE("(%p)\n", Thread);
 548
 549     status = NtQueryInformationThread(Thread, ThreadBasicInformation, &tbi,
 550                                       sizeof(tbi), NULL);
 551     if (status)
 552     {
 553         SetLastError( RtlNtStatusToDosError(status) );
 554         return 0;
 555     }
 556
 557     return HandleToULong(tbi.ClientId.UniqueThread);
 558 }
 559
 560
 561 /***********************************************************************
 562  * GetCurrentThread [KERNEL32.@]  Gets pseudohandle for current thread
 563  *
 564  * RETURNS
 565  *    Pseudohandle for the current thread
 566  */
 567 #undef GetCurrentThread
 568 HANDLE WINAPI GetCurrentThread(void)
 569 {
 570     return (HANDLE)~(ULONG_PTR)1;
 571 }
 572
 573
 574 #ifdef __i386__
 575
 576 /***********************************************************************
 577  *              SetLastError (KERNEL32.@)
 578  */
 579 /* void WINAPI SetLastError( DWORD error ); */
 580 __ASM_STDCALL_FUNC( SetLastError, 4,
 581                    "movl 4(%esp),%eax\n\t"
 582                    ".byte 0x64\n\t"
 583                    "movl %eax,0x34\n\t"
 584                    "ret $4" )
 585
 586 /***********************************************************************
 587  *              GetLastError (KERNEL32.@)
 588  */
 589 /* DWORD WINAPI GetLastError(void); */
 590 __ASM_STDCALL_FUNC( GetLastError, 0, ".byte 0x64\n\tmovl 0x34,%eax\n\tret" )
 591
 592 /***********************************************************************
 593  *              GetCurrentProcessId (KERNEL32.@)
 594  */
 595 /* DWORD WINAPI GetCurrentProcessId(void) */
 596 __ASM_STDCALL_FUNC( GetCurrentProcessId, 0, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" )
 597
 598 /***********************************************************************
 599  *              GetCurrentThreadId (KERNEL32.@)
 600  */
 601 /* DWORD WINAPI GetCurrentThreadId(void) */
 602 __ASM_STDCALL_FUNC( GetCurrentThreadId, 0, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" )
 603
 604 /***********************************************************************
 605  *              GetProcessHeap (KERNEL32.@)
 606  */
 607 /* HANDLE WINAPI GetProcessHeap(void) */
 608 __ASM_STDCALL_FUNC( GetProcessHeap, 0, ".byte 0x64\n\tmovl 0x30,%eax\n\tmovl 0x18(%eax),%eax\n\tret");
 609
 610 #elif defined(__x86_64__)
 611
 612 /***********************************************************************
 613  *              SetLastError (KERNEL32.@)
 614  */
 615 /* void WINAPI SetLastError( DWORD error ); */
 616 __ASM_STDCALL_FUNC( SetLastError, 8, ".byte 0x65\n\tmovl %ecx,0x68\n\tret" );
 617
 618 /***********************************************************************
 619  *              GetLastError (KERNEL32.@)
 620  */
 621 /* DWORD WINAPI GetLastError(void); */
 622 __ASM_STDCALL_FUNC( GetLastError, 0, ".byte 0x65\n\tmovl 0x68,%eax\n\tret" );
 623
 624 /***********************************************************************
 625  *              GetCurrentProcessId (KERNEL32.@)
 626  */
 627 /* DWORD WINAPI GetCurrentProcessId(void) */
 628 __ASM_STDCALL_FUNC( GetCurrentProcessId, 0, ".byte 0x65\n\tmovl 0x40,%eax\n\tret" );
 629
 630 /***********************************************************************
 631  *              GetCurrentThreadId (KERNEL32.@)
 632  */
 633 /* DWORD WINAPI GetCurrentThreadId(void) */
 634 __ASM_STDCALL_FUNC( GetCurrentThreadId, 0, ".byte 0x65\n\tmovl 0x48,%eax\n\tret" );
 635
 636 /***********************************************************************
 637  *              GetProcessHeap (KERNEL32.@)
 638  */
 639 /* HANDLE WINAPI GetProcessHeap(void) */
 640 __ASM_STDCALL_FUNC( GetProcessHeap, 0, ".byte 0x65\n\tmovq 0x60,%rax\n\tmovq 0x30(%rax),%rax\n\tret");
 641
 642 #else  /* __x86_64__ */
 643
 644 /**********************************************************************
 645  *              SetLastError (KERNEL32.@)
 646  *
 647  * Sets the last-error code.
 648  *
 649  * RETURNS
 650  * Nothing.
 651  */
 652 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 653 {
 654     NtCurrentTeb()->LastErrorValue = error;
 655 }
 656
 657 /**********************************************************************
 658  *              GetLastError (KERNEL32.@)
 659  *
 660  * Get the last-error code.
 661  *
 662  * RETURNS
 663  *  last-error code.
 664  */
 665 DWORD WINAPI GetLastError(void)
 666 {
 667     return NtCurrentTeb()->LastErrorValue;
 668 }
 669
 670 /***********************************************************************
 671  *              GetCurrentProcessId (KERNEL32.@)
 672  *
 673  * Get the current process identifier.
 674  *
 675  * RETURNS
 676  *  current process identifier
 677  */
 678 DWORD WINAPI GetCurrentProcessId(void)
 679 {
 680     return HandleToULong(NtCurrentTeb()->ClientId.UniqueProcess);
 681 }
 682
 683 /***********************************************************************
 684  *              GetCurrentThreadId (KERNEL32.@)
 685  *
 686  * Get the current thread identifier.
 687  *
 688  * RETURNS
 689  *  current thread identifier
 690  */
 691 DWORD WINAPI GetCurrentThreadId(void)
 692 {
 693     return HandleToULong(NtCurrentTeb()->ClientId.UniqueThread);
 694 }
 695
 696 /***********************************************************************
 697  *           GetProcessHeap    (KERNEL32.@)
 698  */
 699 HANDLE WINAPI GetProcessHeap(void)
 700 {
 701     return NtCurrentTeb()->Peb->ProcessHeap;
 702 }
 703
 704 #endif  /* __i386__ */
 705
 706 /*************************************************************************
 707  *              rtlmode_to_win32mode
 708  */
 709 static DWORD rtlmode_to_win32mode( DWORD rtlmode )
 710 {
 711     DWORD win32mode = 0;
 712
 713     if (rtlmode & 0x10)
 714         win32mode |= SEM_FAILCRITICALERRORS;
 715     if (rtlmode & 0x20)
 716         win32mode |= SEM_NOGPFAULTERRORBOX;
 717     if (rtlmode & 0x40)
 718         win32mode |= SEM_NOOPENFILEERRORBOX;
 719
 720     return win32mode;
 721 }
 722
 723 /***********************************************************************
 724  *              SetThreadErrorMode (KERNEL32.@)
 725  *
 726  * Set the thread local error mode.
 727  *
 728  * PARAMS
 729  *  mode    [I] The new error mode, a bitwise or of SEM_FAILCRITICALERRORS,
 730  *              SEM_NOGPFAULTERRORBOX and SEM_NOOPENFILEERRORBOX.
 731  *  oldmode [O] Destination of the old error mode (may be NULL)
 732  *
 733  * RETURNS
 734  *  Success: TRUE
 735  *  Failure: FALSE, check GetLastError
 736  */
 737 BOOL WINAPI SetThreadErrorMode( DWORD mode, LPDWORD oldmode )
 738 {
 739     NTSTATUS status;
 740     DWORD tmp = 0;
 741
 742     if (mode & ~(SEM_FAILCRITICALERRORS |
 743                  SEM_NOGPFAULTERRORBOX |
 744                  SEM_NOOPENFILEERRORBOX))
 745     {
 746         SetLastError( ERROR_INVALID_PARAMETER );
 747         return FALSE;
 748     }
 749
 750     if (mode & SEM_FAILCRITICALERRORS)
 751         tmp |= 0x10;
 752     if (mode & SEM_NOGPFAULTERRORBOX)
 753         tmp |= 0x20;
 754     if (mode & SEM_NOOPENFILEERRORBOX)
 755         tmp |= 0x40;
 756
 757     status = RtlSetThreadErrorMode( tmp, oldmode );
 758     if (status)
 759     {
 760         SetLastError( RtlNtStatusToDosError(status) );
 761         return FALSE;
 762     }
 763
 764     if (oldmode)
 765         *oldmode = rtlmode_to_win32mode(*oldmode);
 766
 767     return TRUE;
 768 }
 769
 770 /***********************************************************************
 771  *              GetThreadErrorMode (KERNEL32.@)
 772  *
 773  * Get the thread local error mode.
 774  *
 775  * PARAMS
 776  *  None.
 777  *
 778  * RETURNS
 779  *  The current thread local error mode.
 780  */
 781 DWORD WINAPI GetThreadErrorMode( void )
 782 {
 783     return rtlmode_to_win32mode( RtlGetThreadErrorMode() );
 784 }
 785
 786 /***********************************************************************
 787  *              GetThreadUILanguage (KERNEL32.@)
 788  *
 789  * Get the current thread's language identifier.
 790  *
 791  * PARAMS
 792  *  None.
 793  *
 794  * RETURNS
 795  *  The current thread's language identifier.
 796  */
 797 LANGID WINAPI GetThreadUILanguage( void )
 798 {
 799     LANGID lang;
 800     NtQueryDefaultUILanguage( &lang );
 801     FIXME(": stub, returning default language.\n");
 802     return lang;
 803 }
 804
 805 /***********************************************************************
 806  *              GetThreadIOPendingFlag (KERNEL32.@)
 807  */
 808 BOOL WINAPI GetThreadIOPendingFlag( HANDLE thread, PBOOL io_pending )
 809 {
 810     FIXME("%p, %p\n", thread, io_pending);
 811     *io_pending = FALSE;
 812     return TRUE;
 813 }
 814
 815 /***********************************************************************
 816  *              SetThreadPreferredUILanguages (KERNEL32.@)
 817  */
 818 BOOL WINAPI SetThreadPreferredUILanguages( DWORD flags, PCZZWSTR buffer, PULONG count )
 819 {
 820     FIXME( "%u, %p, %p\n", flags, buffer, count );
 821     return TRUE;
 822 }
 823
 824 /***********************************************************************
 825  *              GetThreadPreferredUILanguages (KERNEL32.@)
 826  */
 827 BOOL WINAPI GetThreadPreferredUILanguages( DWORD flags, PULONG count, PCZZWSTR buffer, PULONG buffersize )
 828 {
 829     FIXME( "%u, %p, %p %p\n", flags, count, buffer, buffersize );
 830     *count = 0;
 831     *buffersize = 0;
 832     return TRUE;
 833 }