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