scheduler/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 <sys/types.h>
  27 #ifdef HAVE_SYS_MMAN_H
  28 #include <sys/mman.h>
  29 #endif
  30 #ifdef HAVE_SYS_TIMES_H
  31 #include <sys/times.h>
  32 #endif
  33 #ifdef HAVE_UNISTD_H
  34 # include <unistd.h>
  35 #endif
  36 #include "wine/winbase16.h"
  37 #include "thread.h"
  38 #include "task.h"
  39 #include "module.h"
  40 #include "winerror.h"
  41 #include "selectors.h"
  42 #include "winnt.h"
  43 #include "wine/server.h"
  44 #include "stackframe.h"
  45 #include "wine/debug.h"
  46 #include "winnls.h"
  47
  48 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  49 WINE_DECLARE_DEBUG_CHANNEL(relay);
  50
  51 /* TEB of the initial thread */
  52 static TEB initial_teb;
  53
  54 extern struct _PDB current_process;
  55
  56 /***********************************************************************
  57  *           THREAD_IdToTEB
  58  *
  59  * Convert a thread id to a TEB, making sure it is valid.
  60  */
  61 TEB *THREAD_IdToTEB( DWORD id )
  62 {
  63     TEB *ret = NULL;
  64
  65     if (!id || id == GetCurrentThreadId()) return NtCurrentTeb();
  66
  67     SERVER_START_REQ( get_thread_info )
  68     {
  69         req->handle = 0;
  70         req->tid_in = id;
  71         if (!wine_server_call( req )) ret = reply->teb;
  72     }
  73     SERVER_END_REQ;
  74
  75     if (!ret)
  76     {
  77         /* Allow task handles to be used; convert to main thread */
  78         if ( IsTask16( id ) )
  79         {
  80             TDB *pTask = TASK_GetPtr( id );
  81             if (pTask) return pTask->teb;
  82         }
  83         SetLastError( ERROR_INVALID_PARAMETER );
  84     }
  85     return ret;
  86 }
  87
  88
  89 /***********************************************************************
  90  *           THREAD_InitTEB
  91  *
  92  * Initialization of a newly created TEB.
  93  */
  94 static BOOL THREAD_InitTEB( TEB *teb )
  95 {
  96     teb->except    = (void *)~0UL;
  97     teb->self      = teb;
  98     teb->tibflags  = TEBF_WIN32;
  99     teb->tls_ptr   = teb->tls_array;
 100     teb->exit_code = STILL_ACTIVE;
 101     teb->request_fd = -1;
 102     teb->reply_fd   = -1;
 103     teb->wait_fd[0] = -1;
 104     teb->wait_fd[1] = -1;
 105     teb->stack_top  = (void *)~0UL;
 106     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 107     teb->StaticUnicodeString.Buffer = (PWSTR)teb->StaticUnicodeBuffer;
 108     teb->teb_sel = wine_ldt_alloc_fs();
 109     return (teb->teb_sel != 0);
 110 }
 111
 112
 113 /***********************************************************************
 114  *           THREAD_FreeTEB
 115  *
 116  * Free data structures associated with a thread.
 117  * Must be called from the context of another thread.
 118  */
 119 static void THREAD_FreeTEB( TEB *teb )
 120 {
 121     TRACE("(%p) called\n", teb );
 122     /* Free the associated memory */
 123     wine_ldt_free_fs( teb->teb_sel );
 124     VirtualFree( teb->stack_base, 0, MEM_RELEASE );
 125 }
 126
 127
 128 /***********************************************************************
 129  *           THREAD_InitStack
 130  *
 131  * Allocate the stack of a thread.
 132  */
 133 TEB *THREAD_InitStack( TEB *teb, DWORD stack_size )
 134 {
 135     DWORD old_prot, total_size;
 136     DWORD page_size = getpagesize();
 137     void *base;
 138
 139     /* Allocate the stack */
 140
 141     if (stack_size >= 16*1024*1024)
 142         WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024);
 143
 144     /* if size is smaller than default, get stack size from parent */
 145     if (stack_size < 1024 * 1024)
 146     {
 147         if (teb)
 148             stack_size = 1024 * 1024;  /* no parent */
 149         else
 150             stack_size = ((char *)NtCurrentTeb()->stack_top - (char *)NtCurrentTeb()->stack_base
 151                           - SIGNAL_STACK_SIZE - 3 * page_size);
 152     }
 153
 154     /* FIXME: some Wine functions use a lot of stack, so we add 64Kb here */
 155     stack_size += 64 * 1024;
 156
 157     /* Memory layout in allocated block:
 158      *
 159      *   size                 contents
 160      * 1 page              NOACCESS guard page
 161      * SIGNAL_STACK_SIZE   signal stack
 162      * 1 page              NOACCESS guard page
 163      * 1 page              PAGE_GUARD guard page
 164      * stack_size          normal stack
 165      * 1 page              TEB (except for initial thread)
 166      * 1 page              debug info (except for initial thread)
 167      */
 168
 169     stack_size = (stack_size + (page_size - 1)) & ~(page_size - 1);
 170     total_size = stack_size + SIGNAL_STACK_SIZE + 3 * page_size;
 171     if (!teb) total_size += 2 * page_size;
 172
 173     if (!(base = VirtualAlloc( NULL, total_size, MEM_COMMIT, PAGE_EXECUTE_READWRITE )))
 174         return NULL;
 175
 176     if (!teb)
 177     {
 178         teb = (TEB *)((char *)base + total_size - 2 * page_size);
 179         if (!THREAD_InitTEB( teb ))
 180         {
 181             VirtualFree( base, 0, MEM_RELEASE );
 182             return NULL;
 183         }
 184         teb->debug_info = (char *)teb + page_size;
 185     }
 186
 187     teb->stack_low    = base;
 188     teb->stack_base   = base;
 189     teb->signal_stack = (char *)base + page_size;
 190     teb->stack_top    = (char *)base + 3 * page_size + SIGNAL_STACK_SIZE + stack_size;
 191
 192     /* Setup guard pages */
 193
 194     VirtualProtect( base, 1, PAGE_NOACCESS, &old_prot );
 195     VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE, 1, PAGE_NOACCESS, &old_prot );
 196     VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE + page_size, 1,
 197                     PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_prot );
 198     return teb;
 199 }
 200
 201
 202 /***********************************************************************
 203  *           THREAD_Init
 204  *
 205  * Setup the initial thread.
 206  *
 207  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 208  */
 209 void THREAD_Init(void)
 210 {
 211     if (!initial_teb.self)  /* do it only once */
 212     {
 213         THREAD_InitTEB( &initial_teb );
 214         assert( initial_teb.teb_sel );
 215         initial_teb.process = &current_process;
 216         SYSDEPS_SetCurThread( &initial_teb );
 217         SYSDEPS_InitErrno();
 218     }
 219 }
 220
 221 DECL_GLOBAL_CONSTRUCTOR(thread_init) { THREAD_Init(); }
 222
 223
 224 /***********************************************************************
 225  *           THREAD_Start
 226  *
 227  * Start execution of a newly created thread. Does not return.
 228  */
 229 static void THREAD_Start(void)
 230 {
 231     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)NtCurrentTeb()->entry_point;
 232
 233     if (TRACE_ON(relay))
 234         DPRINTF("%04lx:Starting thread (entryproc=%p)\n", GetCurrentThreadId(), func );
 235
 236     PROCESS_CallUserSignalProc( USIG_THREAD_INIT, 0 );
 237     MODULE_DllThreadAttach( NULL );
 238     ExitThread( func( NtCurrentTeb()->entry_arg ) );
 239 }
 240
 241
 242 /***********************************************************************
 243  *           CreateThread   (KERNEL32.@)
 244  */
 245 HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, SIZE_T stack,
 246                             LPTHREAD_START_ROUTINE start, LPVOID param,
 247                             DWORD flags, LPDWORD id )
 248 {
 249     HANDLE handle = 0;
 250     TEB *teb;
 251     DWORD tid = 0;
 252     int request_pipe[2];
 253
 254     if (pipe( request_pipe ) == -1)
 255     {
 256         SetLastError( ERROR_TOO_MANY_OPEN_FILES );
 257         return 0;
 258     }
 259     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 260     wine_server_send_fd( request_pipe[0] );
 261
 262     SERVER_START_REQ( new_thread )
 263     {
 264         req->suspend    = ((flags & CREATE_SUSPENDED) != 0);
 265         req->inherit    = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
 266         req->request_fd = request_pipe[0];
 267         if (!wine_server_call_err( req ))
 268         {
 269             handle = reply->handle;
 270             tid = reply->tid;
 271         }
 272         close( request_pipe[0] );
 273     }
 274     SERVER_END_REQ;
 275
 276     if (!handle || !(teb = THREAD_InitStack( NULL, stack )))
 277     {
 278         close( request_pipe[1] );
 279         return 0;
 280     }
 281
 282     teb->process     = NtCurrentTeb()->process;
 283     teb->tid         = tid;
 284     teb->request_fd  = request_pipe[1];
 285     teb->entry_point = start;
 286     teb->entry_arg   = param;
 287     teb->startup     = THREAD_Start;
 288     teb->htask16     = GetCurrentTask();
 289
 290     if (id) *id = tid;
 291     if (SYSDEPS_SpawnThread( teb ) == -1)
 292     {
 293         CloseHandle( handle );
 294         close( request_pipe[1] );
 295         THREAD_FreeTEB( teb );
 296         return 0;
 297     }
 298     return handle;
 299 }
 300
 301 /***********************************************************************
 302  * ExitThread [KERNEL32.@]  Ends a thread
 303  *
 304  * RETURNS
 305  *    None
 306  */
 307 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 308 {
 309     BOOL last;
 310     SERVER_START_REQ( terminate_thread )
 311     {
 312         /* send the exit code to the server */
 313         req->handle    = GetCurrentThread();
 314         req->exit_code = code;
 315         wine_server_call( req );
 316         last = reply->last;
 317     }
 318     SERVER_END_REQ;
 319
 320     if (last)
 321     {
 322         LdrShutdownProcess();
 323         exit( code );
 324     }
 325     else
 326     {
 327         LdrShutdownThread();
 328         if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask();
 329         SYSDEPS_ExitThread( code );
 330     }
 331 }
 332
 333 /***********************************************************************
 334  * OpenThread Retrieves a handle to a thread from its thread id
 335  *
 336  * RETURNS
 337  *    None
 338  */
 339 HANDLE WINAPI OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId )
 340 {
 341     HANDLE ret = 0;
 342     SERVER_START_REQ( open_thread )
 343     {
 344         req->tid     = dwThreadId;
 345         req->access  = dwDesiredAccess;
 346         req->inherit = bInheritHandle;
 347         if (!wine_server_call_err( req )) ret = reply->handle;
 348     }
 349     SERVER_END_REQ;
 350     return ret;
 351 }
 352
 353 /***********************************************************************
 354  * SetThreadContext [KERNEL32.@]  Sets context of thread.
 355  *
 356  * RETURNS
 357  *    Success: TRUE
 358  *    Failure: FALSE
 359  */
 360 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 361                               const CONTEXT *context ) /* [in] Address of context structure */
 362 {
 363     NTSTATUS status = NtSetContextThread( handle, context );
 364     if (status) SetLastError( RtlNtStatusToDosError(status) );
 365     return !status;
 366 }
 367
 368
 369 /***********************************************************************
 370  * GetThreadContext [KERNEL32.@]  Retrieves context of thread.
 371  *
 372  * RETURNS
 373  *    Success: TRUE
 374  *    Failure: FALSE
 375  */
 376 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 377                               CONTEXT *context ) /* [out] Address of context structure */
 378 {
 379     NTSTATUS status = NtGetContextThread( handle, context );
 380     if (status) SetLastError( RtlNtStatusToDosError(status) );
 381     return !status;
 382 }
 383
 384
 385 /**********************************************************************
 386  * GetThreadPriority [KERNEL32.@]  Returns priority for thread.
 387  *
 388  * RETURNS
 389  *    Success: Thread's priority level.
 390  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 391  */
 392 INT WINAPI GetThreadPriority(
 393     HANDLE hthread) /* [in] Handle to thread */
 394 {
 395     INT ret = THREAD_PRIORITY_ERROR_RETURN;
 396     SERVER_START_REQ( get_thread_info )
 397     {
 398         req->handle = hthread;
 399         req->tid_in = 0;
 400         if (!wine_server_call_err( req )) ret = reply->priority;
 401     }
 402     SERVER_END_REQ;
 403     return ret;
 404 }
 405
 406
 407 /**********************************************************************
 408  * SetThreadPriority [KERNEL32.@]  Sets priority for thread.
 409  *
 410  * RETURNS
 411  *    Success: TRUE
 412  *    Failure: FALSE
 413  */
 414 BOOL WINAPI SetThreadPriority(
 415     HANDLE hthread, /* [in] Handle to thread */
 416     INT priority)   /* [in] Thread priority level */
 417 {
 418     BOOL ret;
 419     SERVER_START_REQ( set_thread_info )
 420     {
 421         req->handle   = hthread;
 422         req->priority = priority;
 423         req->mask     = SET_THREAD_INFO_PRIORITY;
 424         ret = !wine_server_call_err( req );
 425     }
 426     SERVER_END_REQ;
 427     return ret;
 428 }
 429
 430
 431 /**********************************************************************
 432  * GetThreadPriorityBoost [KERNEL32.@]  Returns priority boost for thread.
 433  *
 434  * Always reports that priority boost is disabled.
 435  *
 436  * RETURNS
 437  *    Success: TRUE.
 438  *    Failure: FALSE
 439  */
 440 BOOL WINAPI GetThreadPriorityBoost(
 441     HANDLE hthread, /* [in] Handle to thread */
 442     PBOOL pstate)   /* [out] pointer to var that receives the boost state */
 443 {
 444     if (pstate) *pstate = FALSE;
 445     return NO_ERROR;
 446 }
 447
 448
 449 /**********************************************************************
 450  * SetThreadPriorityBoost [KERNEL32.@]  Sets priority boost for thread.
 451  *
 452  * Priority boost is not implemented. Thsi function always returns
 453  * FALSE and sets last error to ERROR_CALL_NOT_IMPLEMENTED
 454  *
 455  * RETURNS
 456  *    Always returns FALSE to indicate a failure
 457  */
 458 BOOL WINAPI SetThreadPriorityBoost(
 459     HANDLE hthread, /* [in] Handle to thread */
 460     BOOL disable)   /* [in] TRUE to disable priority boost */
 461 {
 462     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 463     return FALSE;
 464 }
 465
 466
 467 /**********************************************************************
 468  *           SetThreadAffinityMask   (KERNEL32.@)
 469  */
 470 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 471 {
 472     DWORD ret;
 473     SERVER_START_REQ( set_thread_info )
 474     {
 475         req->handle   = hThread;
 476         req->affinity = dwThreadAffinityMask;
 477         req->mask     = SET_THREAD_INFO_AFFINITY;
 478         ret = !wine_server_call_err( req );
 479         /* FIXME: should return previous value */
 480     }
 481     SERVER_END_REQ;
 482     return ret;
 483 }
 484
 485 /**********************************************************************
 486  * SetThreadIdealProcessor [KERNEL32.@]  Obtains timing information.
 487  *
 488  * RETURNS
 489  *    Success: Value of last call to SetThreadIdealProcessor
 490  *    Failure: -1
 491  */
 492 DWORD WINAPI SetThreadIdealProcessor(
 493     HANDLE hThread,          /* [in] Specifies the thread of interest */
 494     DWORD dwIdealProcessor)  /* [in] Specifies the new preferred processor */
 495 {
 496     FIXME("(%p): stub\n",hThread);
 497     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 498     return -1L;
 499 }
 500
 501 /**********************************************************************
 502  * TerminateThread [KERNEL32.@]  Terminates a thread
 503  *
 504  * RETURNS
 505  *    Success: TRUE
 506  *    Failure: FALSE
 507  */
 508 BOOL WINAPI TerminateThread( HANDLE handle,    /* [in] Handle to thread */
 509                              DWORD exit_code)  /* [in] Exit code for thread */
 510 {
 511     NTSTATUS status = NtTerminateThread( handle, exit_code );
 512     if (status) SetLastError( RtlNtStatusToDosError(status) );
 513     return !status;
 514 }
 515
 516
 517 /**********************************************************************
 518  *              GetExitCodeThread (KERNEL32.@)
 519  *
 520  * Gets termination status of thread.
 521  *
 522  * RETURNS
 523  *    Success: TRUE
 524  *    Failure: FALSE
 525  */
 526 BOOL WINAPI GetExitCodeThread(
 527     HANDLE hthread, /* [in]  Handle to thread */
 528     LPDWORD exitcode) /* [out] Address to receive termination status */
 529 {
 530     BOOL ret;
 531     SERVER_START_REQ( get_thread_info )
 532     {
 533         req->handle = hthread;
 534         req->tid_in = 0;
 535         ret = !wine_server_call_err( req );
 536         if (ret && exitcode) *exitcode = reply->exit_code;
 537     }
 538     SERVER_END_REQ;
 539     return ret;
 540 }
 541
 542
 543 /**********************************************************************
 544  * ResumeThread [KERNEL32.@]  Resumes a thread.
 545  *
 546  * Decrements a thread's suspend count.  When count is zero, the
 547  * execution of the thread is resumed.
 548  *
 549  * RETURNS
 550  *    Success: Previous suspend count
 551  *    Failure: 0xFFFFFFFF
 552  *    Already running: 0
 553  */
 554 DWORD WINAPI ResumeThread( HANDLE hthread ) /* [in] Identifies thread to restart */
 555 {
 556     DWORD ret;
 557     NTSTATUS status = NtResumeThread( hthread, &ret );
 558
 559     if (status)
 560     {
 561         ret = ~0U;
 562         SetLastError( RtlNtStatusToDosError(status) );
 563     }
 564     return ret;
 565 }
 566
 567
 568 /**********************************************************************
 569  * SuspendThread [KERNEL32.@]  Suspends a thread.
 570  *
 571  * RETURNS
 572  *    Success: Previous suspend count
 573  *    Failure: 0xFFFFFFFF
 574  */
 575 DWORD WINAPI SuspendThread( HANDLE hthread ) /* [in] Handle to the thread */
 576 {
 577     DWORD ret;
 578     NTSTATUS status = NtSuspendThread( hthread, &ret );
 579
 580     if (status)
 581     {
 582         ret = ~0U;
 583         SetLastError( RtlNtStatusToDosError(status) );
 584     }
 585     return ret;
 586 }
 587
 588
 589 /* callback for QueueUserAPC */
 590 static void CALLBACK call_user_apc( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3 )
 591 {
 592     PAPCFUNC func = (PAPCFUNC)arg1;
 593     func( arg2 );
 594 }
 595
 596 /***********************************************************************
 597  *              QueueUserAPC  (KERNEL32.@)
 598  */
 599 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 600 {
 601     NTSTATUS status = NtQueueApcThread( hthread, call_user_apc, (ULONG_PTR)func, data, 0 );
 602
 603     if (status) SetLastError( RtlNtStatusToDosError(status) );
 604     return !status;
 605 }
 606
 607
 608 /**********************************************************************
 609  * GetThreadTimes [KERNEL32.@]  Obtains timing information.
 610  *
 611  * RETURNS
 612  *    Success: TRUE
 613  *    Failure: FALSE
 614  */
 615 BOOL WINAPI GetThreadTimes(
 616     HANDLE thread,         /* [in]  Specifies the thread of interest */
 617     LPFILETIME creationtime, /* [out] When the thread was created */
 618     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 619     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 620     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 621 {
 622     BOOL ret = TRUE;
 623
 624     if (creationtime || exittime)
 625     {
 626         /* We need to do a server call to get the creation time or exit time */
 627         /* This works on any thread */
 628
 629         SERVER_START_REQ( get_thread_info )
 630         {
 631             req->handle = thread;
 632             req->tid_in = 0;
 633             if ((ret = !wine_server_call_err( req )))
 634             {
 635                 if (creationtime)
 636                     RtlSecondsSince1970ToTime( reply->creation_time, (LARGE_INTEGER*)creationtime );
 637                 if (exittime)
 638                     RtlSecondsSince1970ToTime( reply->exit_time, (LARGE_INTEGER*)exittime );
 639             }
 640         }
 641         SERVER_END_REQ;
 642     }
 643     if (ret && (kerneltime || usertime))
 644     {
 645         /* We call times(2) for kernel time or user time */
 646         /* We can only (portably) do this for the current thread */
 647         if (thread == GetCurrentThread())
 648         {
 649             ULONGLONG time;
 650             struct tms time_buf;
 651             long clocks_per_sec = sysconf(_SC_CLK_TCK);
 652
 653             times(&time_buf);
 654             if (kerneltime)
 655             {
 656                 time = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 657                 kerneltime->dwHighDateTime = time >> 32;
 658                 kerneltime->dwLowDateTime = (DWORD)time;
 659             }
 660             if (usertime)
 661             {
 662                 time = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 663                 usertime->dwHighDateTime = time >> 32;
 664                 usertime->dwLowDateTime = (DWORD)time;
 665             }
 666         }
 667         else
 668         {
 669             if (kerneltime) kerneltime->dwHighDateTime = kerneltime->dwLowDateTime = 0;
 670             if (usertime) usertime->dwHighDateTime = usertime->dwLowDateTime = 0;
 671             FIXME("Cannot get kerneltime or usertime of other threads\n");
 672         }
 673     }
 674     return ret;
 675 }
 676
 677
 678 /**********************************************************************
 679  * VWin32_BoostThreadGroup [KERNEL.535]
 680  */
 681 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 682 {
 683     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 684 }
 685
 686 /**********************************************************************
 687  * VWin32_BoostThreadStatic [KERNEL.536]
 688  */
 689 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 690 {
 691     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 692 }
 693
 694
 695 /***********************************************************************
 696  * GetCurrentThread [KERNEL32.@]  Gets pseudohandle for current thread
 697  *
 698  * RETURNS
 699  *    Pseudohandle for the current thread
 700  */
 701 #undef GetCurrentThread
 702 HANDLE WINAPI GetCurrentThread(void)
 703 {
 704     return (HANDLE)0xfffffffe;
 705 }
 706
 707
 708 /***********************************************************************
 709  * ProcessIdToSessionId   (KERNEL32.@)
 710  * This function is available on Terminal Server 4SP4 and Windows 2000
 711  */
 712 BOOL WINAPI ProcessIdToSessionId( DWORD procid, DWORD *sessionid_ptr )
 713 {
 714         /* According to MSDN, if the calling process is not in a terminal
 715          * services environment, then the sessionid returned is zero.
 716          */
 717         *sessionid_ptr = 0;
 718         return TRUE;
 719 }
 720
 721 /***********************************************************************
 722  * SetThreadExecutionState (KERNEL32.@)
 723  *
 724  * Informs the system that activity is taking place for
 725  * power management purposes.
 726  */
 727 EXECUTION_STATE WINAPI SetThreadExecutionState(EXECUTION_STATE flags)
 728 {
 729     static EXECUTION_STATE current =
 730             ES_SYSTEM_REQUIRED|ES_DISPLAY_REQUIRED|ES_USER_PRESENT;
 731     EXECUTION_STATE old = current;
 732
 733     if (!(current & ES_CONTINUOUS) || (flags & ES_CONTINUOUS))
 734         current = flags;
 735     FIXME("(0x%lx): stub, harmless (power management).\n", flags);
 736     return old;
 737 }
 738
 739
 740 #ifdef __i386__
 741
 742 /***********************************************************************
 743  *              SetLastError (KERNEL.147)
 744  *              SetLastError (KERNEL32.@)
 745  */
 746 /* void WINAPI SetLastError( DWORD error ); */
 747 __ASM_GLOBAL_FUNC( SetLastError,
 748                    "movl 4(%esp),%eax\n\t"
 749                    ".byte 0x64\n\t"
 750                    "movl %eax,0x60\n\t"
 751                    "ret $4" );
 752
 753 /***********************************************************************
 754  *              GetLastError (KERNEL.148)
 755  *              GetLastError (KERNEL32.@)
 756  */
 757 /* DWORD WINAPI GetLastError(void); */
 758 __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
 759
 760 /***********************************************************************
 761  *              GetCurrentProcessId (KERNEL.471)
 762  *              GetCurrentProcessId (KERNEL32.@)
 763  */
 764 /* DWORD WINAPI GetCurrentProcessId(void) */
 765 __ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" );
 766
 767 /***********************************************************************
 768  *              GetCurrentThreadId (KERNEL.462)
 769  *              GetCurrentThreadId (KERNEL32.@)
 770  */
 771 /* DWORD WINAPI GetCurrentThreadId(void) */
 772 __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
 773
 774 #else  /* __i386__ */
 775
 776 /**********************************************************************
 777  *              SetLastError (KERNEL.147)
 778  *              SetLastError (KERNEL32.@)
 779  *
 780  * Sets the last-error code.
 781  */
 782 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 783 {
 784     NtCurrentTeb()->last_error = error;
 785 }
 786
 787 /**********************************************************************
 788  *              GetLastError (KERNEL.148)
 789  *              GetLastError (KERNEL32.@)
 790  *
 791  * Returns last-error code.
 792  */
 793 DWORD WINAPI GetLastError(void)
 794 {
 795     return NtCurrentTeb()->last_error;
 796 }
 797
 798 /***********************************************************************
 799  *              GetCurrentProcessId (KERNEL.471)
 800  *              GetCurrentProcessId (KERNEL32.@)
 801  *
 802  * Returns process identifier.
 803  */
 804 DWORD WINAPI GetCurrentProcessId(void)
 805 {
 806     return (DWORD)NtCurrentTeb()->pid;
 807 }
 808
 809 /***********************************************************************
 810  *              GetCurrentThreadId (KERNEL.462)
 811  *              GetCurrentThreadId (KERNEL32.@)
 812  *
 813  * Returns thread identifier.
 814  */
 815 DWORD WINAPI GetCurrentThreadId(void)
 816 {
 817     return NtCurrentTeb()->tid;
 818 }
 819
 820 #endif  /* __i386__ */