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 "thread.h"
  42 #include "module.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      return CreateRemoteThread( GetCurrentProcess(),
 125                                 sa, stack, start, param, flags, id );
 126 }
 127
 128
 129 /***************************************************************************
 130  *                  CreateRemoteThread   (KERNEL32.@)
 131  *
 132  * Creates a thread that runs in the address space of another process
 133  *
 134  * PARAMS
 135  *
 136  * RETURNS
 137  *   Success: Handle to the new thread.
 138  *   Failure: NULL. Use GetLastError() to find the error cause.
 139  *
 140  * BUGS
 141  *   Improper memory allocation: there's no ability to free new_thread_info
 142  *   in other process.
 143  *   Bad start address for RtlCreateUserThread because the library
 144  *   may be loaded at different address in other process.
 145  */
 146 HANDLE WINAPI CreateRemoteThread( HANDLE hProcess, SECURITY_ATTRIBUTES *sa, SIZE_T stack,
 147                                   LPTHREAD_START_ROUTINE start, LPVOID param,
 148                                   DWORD flags, LPDWORD id )
 149 {
 150     HANDLE handle;
 151     CLIENT_ID client_id;
 152     NTSTATUS status;
 153     SIZE_T stack_reserve = 0, stack_commit = 0;
 154     struct new_thread_info *info;
 155
 156     if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*info) )))
 157     {
 158         SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 159         return 0;
 160     }
 161     info->func = start;
 162     info->arg  = param;
 163
 164     if (flags & STACK_SIZE_PARAM_IS_A_RESERVATION) stack_reserve = stack;
 165     else stack_commit = stack;
 166
 167     status = RtlCreateUserThread( hProcess, NULL, TRUE,
 168                                   NULL, stack_reserve, stack_commit,
 169                                   THREAD_Start, info, &handle, &client_id );
 170     if (status == STATUS_SUCCESS)
 171     {
 172         if (id) *id = (DWORD)client_id.UniqueThread;
 173         if (sa && (sa->nLength >= sizeof(*sa)) && sa->bInheritHandle)
 174             SetHandleInformation( handle, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT );
 175         if (!(flags & CREATE_SUSPENDED))
 176         {
 177             ULONG ret;
 178             if (NtResumeThread( handle, &ret ))
 179             {
 180                 NtClose( handle );
 181                 RtlFreeHeap( GetProcessHeap(), 0, info );
 182                 SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 183                 handle = 0;
 184             }
 185         }
 186     }
 187     else
 188     {
 189         RtlFreeHeap( GetProcessHeap(), 0, info );
 190         SetLastError( RtlNtStatusToDosError(status) );
 191         handle = 0;
 192     }
 193     return handle;
 194 }
 195
 196
 197 /***********************************************************************
 198  * OpenThread  [KERNEL32.@]   Retrieves a handle to a thread from its thread id
 199  */
 200 HANDLE WINAPI OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId )
 201 {
 202     HANDLE ret = 0;
 203     SERVER_START_REQ( open_thread )
 204     {
 205         req->tid     = dwThreadId;
 206         req->access  = dwDesiredAccess;
 207         req->inherit = bInheritHandle;
 208         if (!wine_server_call_err( req )) ret = reply->handle;
 209     }
 210     SERVER_END_REQ;
 211     return ret;
 212 }
 213
 214
 215 /***********************************************************************
 216  * ExitThread [KERNEL32.@]  Ends a thread
 217  *
 218  * RETURNS
 219  *    None
 220  */
 221 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 222 {
 223     BOOL last;
 224     SERVER_START_REQ( terminate_thread )
 225     {
 226         /* send the exit code to the server */
 227         req->handle    = GetCurrentThread();
 228         req->exit_code = code;
 229         wine_server_call( req );
 230         last = reply->last;
 231     }
 232     SERVER_END_REQ;
 233
 234     if (last)
 235     {
 236         LdrShutdownProcess();
 237         exit( code );
 238     }
 239     else
 240     {
 241         struct wine_pthread_thread_info info;
 242         sigset_t block_set;
 243         ULONG size;
 244
 245         LdrShutdownThread();
 246         RtlAcquirePebLock();
 247         RemoveEntryList( &NtCurrentTeb()->TlsLinks );
 248         RtlReleasePebLock();
 249
 250         info.stack_base  = NtCurrentTeb()->DeallocationStack;
 251         info.teb_base    = NtCurrentTeb();
 252         info.teb_sel     = wine_get_fs();
 253         info.exit_status = code;
 254
 255         size = 0;
 256         NtFreeVirtualMemory( GetCurrentProcess(), &info.stack_base, &size, MEM_RELEASE | MEM_SYSTEM );
 257         info.stack_size = size;
 258
 259         size = 0;
 260         NtFreeVirtualMemory( GetCurrentProcess(), &info.teb_base, &size, MEM_RELEASE | MEM_SYSTEM );
 261         info.teb_size = size;
 262
 263         /* block the async signals */
 264         sigemptyset( &block_set );
 265         sigaddset( &block_set, SIGALRM );
 266         sigaddset( &block_set, SIGIO );
 267         sigaddset( &block_set, SIGINT );
 268         sigaddset( &block_set, SIGHUP );
 269         sigaddset( &block_set, SIGUSR1 );
 270         sigaddset( &block_set, SIGUSR2 );
 271         sigaddset( &block_set, SIGTERM );
 272         sigprocmask( SIG_BLOCK, &block_set, NULL );
 273
 274         close( NtCurrentTeb()->wait_fd[0] );
 275         close( NtCurrentTeb()->wait_fd[1] );
 276         close( NtCurrentTeb()->reply_fd );
 277         close( NtCurrentTeb()->request_fd );
 278
 279         wine_pthread_exit_thread( &info );
 280     }
 281 }
 282
 283
 284 /**********************************************************************
 285  * TerminateThread [KERNEL32.@]  Terminates a thread
 286  *
 287  * RETURNS
 288  *    Success: TRUE
 289  *    Failure: FALSE
 290  */
 291 BOOL WINAPI TerminateThread( HANDLE handle,    /* [in] Handle to thread */
 292                              DWORD exit_code)  /* [in] Exit code for thread */
 293 {
 294     NTSTATUS status = NtTerminateThread( handle, exit_code );
 295     if (status) SetLastError( RtlNtStatusToDosError(status) );
 296     return !status;
 297 }
 298
 299
 300 /***********************************************************************
 301  *           FreeLibraryAndExitThread (KERNEL32.@)
 302  */
 303 void WINAPI FreeLibraryAndExitThread(HINSTANCE hLibModule, DWORD dwExitCode)
 304 {
 305     FreeLibrary(hLibModule);
 306     ExitThread(dwExitCode);
 307 }
 308
 309
 310 /**********************************************************************
 311  *              GetExitCodeThread (KERNEL32.@)
 312  *
 313  * Gets termination status of thread.
 314  *
 315  * RETURNS
 316  *    Success: TRUE
 317  *    Failure: FALSE
 318  */
 319 BOOL WINAPI GetExitCodeThread(
 320     HANDLE hthread, /* [in]  Handle to thread */
 321     LPDWORD exitcode) /* [out] Address to receive termination status */
 322 {
 323     THREAD_BASIC_INFORMATION info;
 324     NTSTATUS status = NtQueryInformationThread( hthread, ThreadBasicInformation,
 325                                                 &info, sizeof(info), NULL );
 326
 327     if (status)
 328     {
 329         SetLastError( RtlNtStatusToDosError(status) );
 330         return FALSE;
 331     }
 332     if (exitcode) *exitcode = info.ExitStatus;
 333     return TRUE;
 334 }
 335
 336
 337 /***********************************************************************
 338  * SetThreadContext [KERNEL32.@]  Sets context of thread.
 339  *
 340  * RETURNS
 341  *    Success: TRUE
 342  *    Failure: FALSE
 343  */
 344 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 345                               const CONTEXT *context ) /* [in] Address of context structure */
 346 {
 347     NTSTATUS status = NtSetContextThread( handle, context );
 348     if (status) SetLastError( RtlNtStatusToDosError(status) );
 349     return !status;
 350 }
 351
 352
 353 /***********************************************************************
 354  * GetThreadContext [KERNEL32.@]  Retrieves context of thread.
 355  *
 356  * RETURNS
 357  *    Success: TRUE
 358  *    Failure: FALSE
 359  */
 360 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 361                               CONTEXT *context ) /* [out] Address of context structure */
 362 {
 363     NTSTATUS status = NtGetContextThread( handle, context );
 364     if (status) SetLastError( RtlNtStatusToDosError(status) );
 365     return !status;
 366 }
 367
 368
 369 /**********************************************************************
 370  * SuspendThread [KERNEL32.@]  Suspends a thread.
 371  *
 372  * RETURNS
 373  *    Success: Previous suspend count
 374  *    Failure: 0xFFFFFFFF
 375  */
 376 DWORD WINAPI SuspendThread( HANDLE hthread ) /* [in] Handle to the thread */
 377 {
 378     DWORD ret;
 379     NTSTATUS status = NtSuspendThread( hthread, &ret );
 380
 381     if (status)
 382     {
 383         ret = ~0U;
 384         SetLastError( RtlNtStatusToDosError(status) );
 385     }
 386     return ret;
 387 }
 388
 389
 390 /**********************************************************************
 391  * ResumeThread [KERNEL32.@]  Resumes a thread.
 392  *
 393  * Decrements a thread's suspend count.  When count is zero, the
 394  * execution of the thread is resumed.
 395  *
 396  * RETURNS
 397  *    Success: Previous suspend count
 398  *    Failure: 0xFFFFFFFF
 399  *    Already running: 0
 400  */
 401 DWORD WINAPI ResumeThread( HANDLE hthread ) /* [in] Identifies thread to restart */
 402 {
 403     DWORD ret;
 404     NTSTATUS status = NtResumeThread( hthread, &ret );
 405
 406     if (status)
 407     {
 408         ret = ~0U;
 409         SetLastError( RtlNtStatusToDosError(status) );
 410     }
 411     return ret;
 412 }
 413
 414
 415 /**********************************************************************
 416  * GetThreadPriority [KERNEL32.@]  Returns priority for thread.
 417  *
 418  * RETURNS
 419  *    Success: Thread's priority level.
 420  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 421  */
 422 INT WINAPI GetThreadPriority(
 423     HANDLE hthread) /* [in] Handle to thread */
 424 {
 425     THREAD_BASIC_INFORMATION info;
 426     NTSTATUS status = NtQueryInformationThread( hthread, ThreadBasicInformation,
 427                                                 &info, sizeof(info), NULL );
 428
 429     if (status)
 430     {
 431         SetLastError( RtlNtStatusToDosError(status) );
 432         return THREAD_PRIORITY_ERROR_RETURN;
 433     }
 434     return info.Priority;
 435 }
 436
 437
 438 /**********************************************************************
 439  * SetThreadPriority [KERNEL32.@]  Sets priority for thread.
 440  *
 441  * RETURNS
 442  *    Success: TRUE
 443  *    Failure: FALSE
 444  */
 445 BOOL WINAPI SetThreadPriority(
 446     HANDLE hthread, /* [in] Handle to thread */
 447     INT priority)   /* [in] Thread priority level */
 448 {
 449     BOOL ret;
 450     SERVER_START_REQ( set_thread_info )
 451     {
 452         req->handle   = hthread;
 453         req->priority = priority;
 454         req->mask     = SET_THREAD_INFO_PRIORITY;
 455         ret = !wine_server_call_err( req );
 456     }
 457     SERVER_END_REQ;
 458     return ret;
 459 }
 460
 461
 462 /**********************************************************************
 463  * GetThreadPriorityBoost [KERNEL32.@]  Returns priority boost for thread.
 464  *
 465  * Always reports that priority boost is disabled.
 466  *
 467  * RETURNS
 468  *    Success: TRUE.
 469  *    Failure: FALSE
 470  */
 471 BOOL WINAPI GetThreadPriorityBoost(
 472     HANDLE hthread, /* [in] Handle to thread */
 473     PBOOL pstate)   /* [out] pointer to var that receives the boost state */
 474 {
 475     if (pstate) *pstate = FALSE;
 476     return NO_ERROR;
 477 }
 478
 479
 480 /**********************************************************************
 481  * SetThreadPriorityBoost [KERNEL32.@]  Sets priority boost for thread.
 482  *
 483  * Priority boost is not implemented. Thsi function always returns
 484  * FALSE and sets last error to ERROR_CALL_NOT_IMPLEMENTED
 485  *
 486  * RETURNS
 487  *    Always returns FALSE to indicate a failure
 488  */
 489 BOOL WINAPI SetThreadPriorityBoost(
 490     HANDLE hthread, /* [in] Handle to thread */
 491     BOOL disable)   /* [in] TRUE to disable priority boost */
 492 {
 493     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 494     return FALSE;
 495 }
 496
 497
 498 /**********************************************************************
 499  *           SetThreadAffinityMask   (KERNEL32.@)
 500  */
 501 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 502 {
 503     DWORD ret;
 504     SERVER_START_REQ( set_thread_info )
 505     {
 506         req->handle   = hThread;
 507         req->affinity = dwThreadAffinityMask;
 508         req->mask     = SET_THREAD_INFO_AFFINITY;
 509         ret = !wine_server_call_err( req );
 510         /* FIXME: should return previous value */
 511     }
 512     SERVER_END_REQ;
 513     return ret;
 514 }
 515
 516
 517 /**********************************************************************
 518  * SetThreadIdealProcessor [KERNEL32.@]  Obtains timing information.
 519  *
 520  * RETURNS
 521  *    Success: Value of last call to SetThreadIdealProcessor
 522  *    Failure: -1
 523  */
 524 DWORD WINAPI SetThreadIdealProcessor(
 525     HANDLE hThread,          /* [in] Specifies the thread of interest */
 526     DWORD dwIdealProcessor)  /* [in] Specifies the new preferred processor */
 527 {
 528     FIXME("(%p): stub\n",hThread);
 529     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 530     return -1L;
 531 }
 532
 533
 534 /* callback for QueueUserAPC */
 535 static void CALLBACK call_user_apc( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3 )
 536 {
 537     PAPCFUNC func = (PAPCFUNC)arg1;
 538     func( arg2 );
 539 }
 540
 541 /***********************************************************************
 542  *              QueueUserAPC  (KERNEL32.@)
 543  */
 544 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 545 {
 546     NTSTATUS status = NtQueueApcThread( hthread, call_user_apc, (ULONG_PTR)func, data, 0 );
 547
 548     if (status) SetLastError( RtlNtStatusToDosError(status) );
 549     return !status;
 550 }
 551
 552 /***********************************************************************
 553  *              QueueUserWorkItem  (KERNEL32.@)
 554  */
 555 BOOL WINAPI QueueUserWorkItem( LPTHREAD_START_ROUTINE Function, PVOID Context, ULONG Flags )
 556 {
 557     FIXME("(%p,%p,0x%08lx): stub\n", Function, Context, Flags);
 558     return FALSE;
 559 }
 560
 561 /**********************************************************************
 562  * GetThreadTimes [KERNEL32.@]  Obtains timing information.
 563  *
 564  * RETURNS
 565  *    Success: TRUE
 566  *    Failure: FALSE
 567  */
 568 BOOL WINAPI GetThreadTimes(
 569     HANDLE thread,         /* [in]  Specifies the thread of interest */
 570     LPFILETIME creationtime, /* [out] When the thread was created */
 571     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 572     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 573     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 574 {
 575     BOOL ret = TRUE;
 576
 577     if (creationtime || exittime)
 578     {
 579         /* We need to do a server call to get the creation time or exit time */
 580         /* This works on any thread */
 581
 582         SERVER_START_REQ( get_thread_info )
 583         {
 584             req->handle = thread;
 585             req->tid_in = 0;
 586             if ((ret = !wine_server_call_err( req )))
 587             {
 588                 if (creationtime)
 589                     RtlSecondsSince1970ToTime( reply->creation_time, (LARGE_INTEGER*)creationtime );
 590                 if (exittime)
 591                     RtlSecondsSince1970ToTime( reply->exit_time, (LARGE_INTEGER*)exittime );
 592             }
 593         }
 594         SERVER_END_REQ;
 595     }
 596     if (ret && (kerneltime || usertime))
 597     {
 598         /* We call times(2) for kernel time or user time */
 599         /* We can only (portably) do this for the current thread */
 600         if (thread == GetCurrentThread())
 601         {
 602             ULONGLONG time;
 603             struct tms time_buf;
 604             long clocks_per_sec = sysconf(_SC_CLK_TCK);
 605
 606             times(&time_buf);
 607             if (kerneltime)
 608             {
 609                 time = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 610                 kerneltime->dwHighDateTime = time >> 32;
 611                 kerneltime->dwLowDateTime = (DWORD)time;
 612             }
 613             if (usertime)
 614             {
 615                 time = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 616                 usertime->dwHighDateTime = time >> 32;
 617                 usertime->dwLowDateTime = (DWORD)time;
 618             }
 619         }
 620         else
 621         {
 622             if (kerneltime) kerneltime->dwHighDateTime = kerneltime->dwLowDateTime = 0;
 623             if (usertime) usertime->dwHighDateTime = usertime->dwLowDateTime = 0;
 624             FIXME("Cannot get kerneltime or usertime of other threads\n");
 625         }
 626     }
 627     return ret;
 628 }
 629
 630
 631 /**********************************************************************
 632  * VWin32_BoostThreadGroup [KERNEL.535]
 633  */
 634 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 635 {
 636     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 637 }
 638
 639
 640 /**********************************************************************
 641  * VWin32_BoostThreadStatic [KERNEL.536]
 642  */
 643 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 644 {
 645     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 646 }
 647
 648
 649 /***********************************************************************
 650  * GetCurrentThread [KERNEL32.@]  Gets pseudohandle for current thread
 651  *
 652  * RETURNS
 653  *    Pseudohandle for the current thread
 654  */
 655 #undef GetCurrentThread
 656 HANDLE WINAPI GetCurrentThread(void)
 657 {
 658     return (HANDLE)0xfffffffe;
 659 }
 660
 661
 662 #ifdef __i386__
 663
 664 /***********************************************************************
 665  *              SetLastError (KERNEL.147)
 666  *              SetLastError (KERNEL32.@)
 667  */
 668 /* void WINAPI SetLastError( DWORD error ); */
 669 __ASM_GLOBAL_FUNC( SetLastError,
 670                    "movl 4(%esp),%eax\n\t"
 671                    ".byte 0x64\n\t"
 672                    "movl %eax,0x34\n\t"
 673                    "ret $4" )
 674
 675 /***********************************************************************
 676  *              GetLastError (KERNEL.148)
 677  *              GetLastError (KERNEL32.@)
 678  */
 679 /* DWORD WINAPI GetLastError(void); */
 680 __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x34,%eax\n\tret" )
 681
 682 /***********************************************************************
 683  *              GetCurrentProcessId (KERNEL.471)
 684  *              GetCurrentProcessId (KERNEL32.@)
 685  */
 686 /* DWORD WINAPI GetCurrentProcessId(void) */
 687 __ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" )
 688
 689 /***********************************************************************
 690  *              GetCurrentThreadId (KERNEL.462)
 691  *              GetCurrentThreadId (KERNEL32.@)
 692  */
 693 /* DWORD WINAPI GetCurrentThreadId(void) */
 694 __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" )
 695
 696 #else  /* __i386__ */
 697
 698 /**********************************************************************
 699  *              SetLastError (KERNEL.147)
 700  *              SetLastError (KERNEL32.@)
 701  *
 702  * Sets the last-error code.
 703  */
 704 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 705 {
 706     NtCurrentTeb()->LastErrorValue = error;
 707 }
 708
 709 /**********************************************************************
 710  *              GetLastError (KERNEL.148)
 711  *              GetLastError (KERNEL32.@)
 712  *
 713  * Returns last-error code.
 714  */
 715 DWORD WINAPI GetLastError(void)
 716 {
 717     return NtCurrentTeb()->LastErrorValue;
 718 }
 719
 720 /***********************************************************************
 721  *              GetCurrentProcessId (KERNEL.471)
 722  *              GetCurrentProcessId (KERNEL32.@)
 723  *
 724  * Returns process identifier.
 725  */
 726 DWORD WINAPI GetCurrentProcessId(void)
 727 {
 728     return (DWORD)NtCurrentTeb()->ClientId.UniqueProcess;
 729 }
 730
 731 /***********************************************************************
 732  *              GetCurrentThreadId (KERNEL.462)
 733  *              GetCurrentThreadId (KERNEL32.@)
 734  *
 735  * Returns thread identifier.
 736  */
 737 DWORD WINAPI GetCurrentThreadId(void)
 738 {
 739     return (DWORD)NtCurrentTeb()->ClientId.UniqueThread;
 740 }
 741
 742 #endif  /* __i386__ */