git.oblomov.eu Git - wine/blob - 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_entries( teb->stack_sel, 1 );
 124     wine_ldt_free_fs( teb->teb_sel );
 125     VirtualFree( teb->stack_base, 0, MEM_RELEASE );
 126 }
 127
 128
 129 /***********************************************************************
 130  *           THREAD_InitStack
 131  *
 132  * Allocate the stack of a thread.
 133  */
 134 TEB *THREAD_InitStack( TEB *teb, DWORD stack_size )
 135 {
 136     DWORD old_prot, total_size;
 137     DWORD page_size = getpagesize();
 138     void *base;
 139
 140     /* Allocate the stack */
 141
 142     if (stack_size >= 16*1024*1024)
 143         WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024);
 144
 145     /* if size is smaller than default, get stack size from parent */
 146     if (stack_size < 1024 * 1024)
 147     {
 148         if (teb)
 149             stack_size = 1024 * 1024;  /* no parent */
 150         else
 151             stack_size = ((char *)NtCurrentTeb()->stack_top - (char *)NtCurrentTeb()->stack_base
 152                           - SIGNAL_STACK_SIZE - 3 * page_size);
 153     }
 154
 155     /* FIXME: some Wine functions use a lot of stack, so we add 64Kb here */
 156     stack_size += 64 * 1024;
 157
 158     /* Memory layout in allocated block:
 159      *
 160      *   size                 contents
 161      * 1 page              NOACCESS guard page
 162      * SIGNAL_STACK_SIZE   signal stack
 163      * 1 page              NOACCESS guard page
 164      * 1 page              PAGE_GUARD guard page
 165      * stack_size          normal stack
 166      * 64Kb                16-bit stack (optional)
 167      * 1 page              TEB (except for initial thread)
 168      * 1 page              debug info (except for initial thread)
 169      */
 170
 171     stack_size = (stack_size + (page_size - 1)) & ~(page_size - 1);
 172     total_size = stack_size + SIGNAL_STACK_SIZE + 3 * page_size;
 173     total_size += 0x10000; /* 16-bit stack */
 174     if (!teb) total_size += 2 * page_size;
 175
 176     if (!(base = VirtualAlloc( NULL, total_size, MEM_COMMIT, PAGE_EXECUTE_READWRITE )))
 177         return NULL;
 178
 179     if (!teb)
 180     {
 181         teb = (TEB *)((char *)base + total_size - 2 * page_size);
 182         if (!THREAD_InitTEB( teb )) goto error;
 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
 198     /* Allocate the 16-bit stack selector */
 199
 200     teb->stack_sel = SELECTOR_AllocBlock( teb->stack_top, 0x10000, WINE_LDT_FLAGS_DATA );
 201     if (!teb->stack_sel) goto error;
 202     teb->cur_stack = MAKESEGPTR( teb->stack_sel, 0x10000 - sizeof(STACK16FRAME) );
 203
 204     return teb;
 205
 206 error:
 207     wine_ldt_free_fs( teb->teb_sel );
 208     VirtualFree( base, 0, MEM_RELEASE );
 209     return NULL;
 210 }
 211
 212
 213 /***********************************************************************
 214  *           THREAD_Init
 215  *
 216  * Setup the initial thread.
 217  *
 218  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 219  */
 220 void THREAD_Init(void)
 221 {
 222     if (!initial_teb.self)  /* do it only once */
 223     {
 224         THREAD_InitTEB( &initial_teb );
 225         assert( initial_teb.teb_sel );
 226         initial_teb.process = &current_process;
 227         SYSDEPS_SetCurThread( &initial_teb );
 228         SYSDEPS_InitErrno();
 229     }
 230 }
 231
 232 DECL_GLOBAL_CONSTRUCTOR(thread_init) { THREAD_Init(); }
 233
 234
 235 /***********************************************************************
 236  *           THREAD_Start
 237  *
 238  * Start execution of a newly created thread. Does not return.
 239  */
 240 static void THREAD_Start(void)
 241 {
 242     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)NtCurrentTeb()->entry_point;
 243
 244     if (TRACE_ON(relay))
 245         DPRINTF("%04lx:Starting thread (entryproc=%p)\n", GetCurrentThreadId(), func );
 246
 247     PROCESS_CallUserSignalProc( USIG_THREAD_INIT, 0 );
 248     MODULE_DllThreadAttach( NULL );
 249     ExitThread( func( NtCurrentTeb()->entry_arg ) );
 250 }
 251
 252
 253 /***********************************************************************
 254  *           CreateThread   (KERNEL32.@)
 255  */
 256 HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, SIZE_T stack,
 257                             LPTHREAD_START_ROUTINE start, LPVOID param,
 258                             DWORD flags, LPDWORD id )
 259 {
 260     HANDLE handle = 0;
 261     TEB *teb;
 262     DWORD tid = 0;
 263     int request_pipe[2];
 264
 265     if (pipe( request_pipe ) == -1)
 266     {
 267         SetLastError( ERROR_TOO_MANY_OPEN_FILES );
 268         return 0;
 269     }
 270     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 271     wine_server_send_fd( request_pipe[0] );
 272
 273     SERVER_START_REQ( new_thread )
 274     {
 275         req->suspend    = ((flags & CREATE_SUSPENDED) != 0);
 276         req->inherit    = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
 277         req->request_fd = request_pipe[0];
 278         if (!wine_server_call_err( req ))
 279         {
 280             handle = reply->handle;
 281             tid = reply->tid;
 282         }
 283         close( request_pipe[0] );
 284     }
 285     SERVER_END_REQ;
 286
 287     if (!handle || !(teb = THREAD_InitStack( NULL, stack )))
 288     {
 289         close( request_pipe[1] );
 290         return 0;
 291     }
 292
 293     teb->process     = NtCurrentTeb()->process;
 294     teb->tid         = tid;
 295     teb->request_fd  = request_pipe[1];
 296     teb->entry_point = start;
 297     teb->entry_arg   = param;
 298     teb->startup     = THREAD_Start;
 299     teb->htask16     = GetCurrentTask();
 300
 301     if (id) *id = tid;
 302     if (SYSDEPS_SpawnThread( teb ) == -1)
 303     {
 304         CloseHandle( handle );
 305         close( request_pipe[1] );
 306         THREAD_FreeTEB( teb );
 307         return 0;
 308     }
 309     return handle;
 310 }
 311
 312 /***********************************************************************
 313  * ExitThread [KERNEL32.@]  Ends a thread
 314  *
 315  * RETURNS
 316  *    None
 317  */
 318 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 319 {
 320     BOOL last;
 321     SERVER_START_REQ( terminate_thread )
 322     {
 323         /* send the exit code to the server */
 324         req->handle    = GetCurrentThread();
 325         req->exit_code = code;
 326         wine_server_call( req );
 327         last = reply->last;
 328     }
 329     SERVER_END_REQ;
 330
 331     if (last)
 332     {
 333         LdrShutdownProcess();
 334         exit( code );
 335     }
 336     else
 337     {
 338         LdrShutdownThread();
 339         if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask();
 340         SYSDEPS_ExitThread( code );
 341     }
 342 }
 343
 344 /***********************************************************************
 345  * OpenThread Retrieves a handle to a thread from its thread id
 346  *
 347  * RETURNS
 348  *    None
 349  */
 350 HANDLE WINAPI OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId )
 351 {
 352     HANDLE ret = 0;
 353     SERVER_START_REQ( open_thread )
 354     {
 355         req->tid     = dwThreadId;
 356         req->access  = dwDesiredAccess;
 357         req->inherit = bInheritHandle;
 358         if (!wine_server_call_err( req )) ret = reply->handle;
 359     }
 360     SERVER_END_REQ;
 361     return ret;
 362 }
 363
 364 /***********************************************************************
 365  * SetThreadContext [KERNEL32.@]  Sets context of thread.
 366  *
 367  * RETURNS
 368  *    Success: TRUE
 369  *    Failure: FALSE
 370  */
 371 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 372                               const CONTEXT *context ) /* [in] Address of context structure */
 373 {
 374     BOOL ret;
 375     SERVER_START_REQ( set_thread_context )
 376     {
 377         req->handle = handle;
 378         req->flags = context->ContextFlags;
 379         wine_server_add_data( req, context, sizeof(*context) );
 380         ret = !wine_server_call_err( req );
 381     }
 382     SERVER_END_REQ;
 383     return ret;
 384 }
 385
 386
 387 /***********************************************************************
 388  * GetThreadContext [KERNEL32.@]  Retrieves context of thread.
 389  *
 390  * RETURNS
 391  *    Success: TRUE
 392  *    Failure: FALSE
 393  */
 394 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 395                               CONTEXT *context ) /* [out] Address of context structure */
 396 {
 397     BOOL ret;
 398     SERVER_START_REQ( get_thread_context )
 399     {
 400         req->handle = handle;
 401         req->flags = context->ContextFlags;
 402         wine_server_add_data( req, context, sizeof(*context) );
 403         wine_server_set_reply( req, context, sizeof(*context) );
 404         ret = !wine_server_call_err( req );
 405     }
 406     SERVER_END_REQ;
 407     return ret;
 408 }
 409
 410
 411 /**********************************************************************
 412  * GetThreadPriority [KERNEL32.@]  Returns priority for thread.
 413  *
 414  * RETURNS
 415  *    Success: Thread's priority level.
 416  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 417  */
 418 INT WINAPI GetThreadPriority(
 419     HANDLE hthread) /* [in] Handle to thread */
 420 {
 421     INT ret = THREAD_PRIORITY_ERROR_RETURN;
 422     SERVER_START_REQ( get_thread_info )
 423     {
 424         req->handle = hthread;
 425         req->tid_in = 0;
 426         if (!wine_server_call_err( req )) ret = reply->priority;
 427     }
 428     SERVER_END_REQ;
 429     return ret;
 430 }
 431
 432
 433 /**********************************************************************
 434  * SetThreadPriority [KERNEL32.@]  Sets priority for thread.
 435  *
 436  * RETURNS
 437  *    Success: TRUE
 438  *    Failure: FALSE
 439  */
 440 BOOL WINAPI SetThreadPriority(
 441     HANDLE hthread, /* [in] Handle to thread */
 442     INT priority)   /* [in] Thread priority level */
 443 {
 444     BOOL ret;
 445     SERVER_START_REQ( set_thread_info )
 446     {
 447         req->handle   = hthread;
 448         req->priority = priority;
 449         req->mask     = SET_THREAD_INFO_PRIORITY;
 450         ret = !wine_server_call_err( req );
 451     }
 452     SERVER_END_REQ;
 453     return ret;
 454 }
 455
 456
 457 /**********************************************************************
 458  * GetThreadPriorityBoost [KERNEL32.@]  Returns priority boost for thread.
 459  *
 460  * Always reports that priority boost is disabled.
 461  *
 462  * RETURNS
 463  *    Success: TRUE.
 464  *    Failure: FALSE
 465  */
 466 BOOL WINAPI GetThreadPriorityBoost(
 467     HANDLE hthread, /* [in] Handle to thread */
 468     PBOOL pstate)   /* [out] pointer to var that receives the boost state */
 469 {
 470     if (pstate) *pstate = FALSE;
 471     return NO_ERROR;
 472 }
 473
 474
 475 /**********************************************************************
 476  * SetThreadPriorityBoost [KERNEL32.@]  Sets priority boost for thread.
 477  *
 478  * Priority boost is not implemented. Thsi function always returns
 479  * FALSE and sets last error to ERROR_CALL_NOT_IMPLEMENTED
 480  *
 481  * RETURNS
 482  *    Always returns FALSE to indicate a failure
 483  */
 484 BOOL WINAPI SetThreadPriorityBoost(
 485     HANDLE hthread, /* [in] Handle to thread */
 486     BOOL disable)   /* [in] TRUE to disable priority boost */
 487 {
 488     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 489     return FALSE;
 490 }
 491
 492
 493 /**********************************************************************
 494  *           SetThreadAffinityMask   (KERNEL32.@)
 495  */
 496 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 497 {
 498     DWORD ret;
 499     SERVER_START_REQ( set_thread_info )
 500     {
 501         req->handle   = hThread;
 502         req->affinity = dwThreadAffinityMask;
 503         req->mask     = SET_THREAD_INFO_AFFINITY;
 504         ret = !wine_server_call_err( req );
 505         /* FIXME: should return previous value */
 506     }
 507     SERVER_END_REQ;
 508     return ret;
 509 }
 510
 511 /**********************************************************************
 512  * SetThreadIdealProcessor [KERNEL32.@]  Obtains timing information.
 513  *
 514  * RETURNS
 515  *    Success: Value of last call to SetThreadIdealProcessor
 516  *    Failure: -1
 517  */
 518 DWORD WINAPI SetThreadIdealProcessor(
 519     HANDLE hThread,          /* [in] Specifies the thread of interest */
 520     DWORD dwIdealProcessor)  /* [in] Specifies the new preferred processor */
 521 {
 522     FIXME("(%p): stub\n",hThread);
 523     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 524     return -1L;
 525 }
 526
 527 /**********************************************************************
 528  * TerminateThread [KERNEL32.@]  Terminates a thread
 529  *
 530  * RETURNS
 531  *    Success: TRUE
 532  *    Failure: FALSE
 533  */
 534 BOOL WINAPI TerminateThread( HANDLE handle,    /* [in] Handle to thread */
 535                              DWORD exit_code)  /* [in] Exit code for thread */
 536 {
 537     NTSTATUS status = NtTerminateThread( handle, exit_code );
 538     if (status) SetLastError( RtlNtStatusToDosError(status) );
 539     return !status;
 540 }
 541
 542
 543 /**********************************************************************
 544  *              GetExitCodeThread (KERNEL32.@)
 545  *
 546  * Gets termination status of thread.
 547  *
 548  * RETURNS
 549  *    Success: TRUE
 550  *    Failure: FALSE
 551  */
 552 BOOL WINAPI GetExitCodeThread(
 553     HANDLE hthread, /* [in]  Handle to thread */
 554     LPDWORD exitcode) /* [out] Address to receive termination status */
 555 {
 556     BOOL ret;
 557     SERVER_START_REQ( get_thread_info )
 558     {
 559         req->handle = hthread;
 560         req->tid_in = 0;
 561         ret = !wine_server_call_err( req );
 562         if (ret && exitcode) *exitcode = reply->exit_code;
 563     }
 564     SERVER_END_REQ;
 565     return ret;
 566 }
 567
 568
 569 /**********************************************************************
 570  * ResumeThread [KERNEL32.@]  Resumes a thread.
 571  *
 572  * Decrements a thread's suspend count.  When count is zero, the
 573  * execution of the thread is resumed.
 574  *
 575  * RETURNS
 576  *    Success: Previous suspend count
 577  *    Failure: 0xFFFFFFFF
 578  *    Already running: 0
 579  */
 580 DWORD WINAPI ResumeThread(
 581     HANDLE hthread) /* [in] Identifies thread to restart */
 582 {
 583     DWORD ret = 0xffffffff;
 584     SERVER_START_REQ( resume_thread )
 585     {
 586         req->handle = hthread;
 587         if (!wine_server_call_err( req )) ret = reply->count;
 588     }
 589     SERVER_END_REQ;
 590     return ret;
 591 }
 592
 593
 594 /**********************************************************************
 595  * SuspendThread [KERNEL32.@]  Suspends a thread.
 596  *
 597  * RETURNS
 598  *    Success: Previous suspend count
 599  *    Failure: 0xFFFFFFFF
 600  */
 601 DWORD WINAPI SuspendThread(
 602     HANDLE hthread) /* [in] Handle to the thread */
 603 {
 604     DWORD ret = 0xffffffff;
 605     SERVER_START_REQ( suspend_thread )
 606     {
 607         req->handle = hthread;
 608         if (!wine_server_call_err( req )) ret = reply->count;
 609     }
 610     SERVER_END_REQ;
 611     return ret;
 612 }
 613
 614
 615 /***********************************************************************
 616  *              QueueUserAPC  (KERNEL32.@)
 617  */
 618 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 619 {
 620     DWORD ret;
 621     SERVER_START_REQ( queue_apc )
 622     {
 623         req->handle = hthread;
 624         req->user   = 1;
 625         req->func   = func;
 626         req->param  = (void *)data;
 627         ret = !wine_server_call_err( req );
 628     }
 629     SERVER_END_REQ;
 630     return ret;
 631 }
 632
 633
 634 /**********************************************************************
 635  * GetThreadTimes [KERNEL32.@]  Obtains timing information.
 636  *
 637  * RETURNS
 638  *    Success: TRUE
 639  *    Failure: FALSE
 640  */
 641 BOOL WINAPI GetThreadTimes(
 642     HANDLE thread,         /* [in]  Specifies the thread of interest */
 643     LPFILETIME creationtime, /* [out] When the thread was created */
 644     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 645     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 646     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 647 {
 648     BOOL ret = TRUE;
 649
 650     if (creationtime || exittime)
 651     {
 652         /* We need to do a server call to get the creation time or exit time */
 653         /* This works on any thread */
 654
 655         SERVER_START_REQ( get_thread_info )
 656         {
 657             req->handle = thread;
 658             req->tid_in = 0;
 659             if ((ret = !wine_server_call_err( req )))
 660             {
 661                 if (creationtime)
 662                     RtlSecondsSince1970ToTime( reply->creation_time, (LARGE_INTEGER*)creationtime );
 663                 if (exittime)
 664                     RtlSecondsSince1970ToTime( reply->exit_time, (LARGE_INTEGER*)exittime );
 665             }
 666         }
 667         SERVER_END_REQ;
 668     }
 669     if (ret && (kerneltime || usertime))
 670     {
 671         /* We call times(2) for kernel time or user time */
 672         /* We can only (portably) do this for the current thread */
 673         if (thread == GetCurrentThread())
 674         {
 675             ULONGLONG time;
 676             struct tms time_buf;
 677             long clocks_per_sec = sysconf(_SC_CLK_TCK);
 678
 679             times(&time_buf);
 680             if (kerneltime)
 681             {
 682                 time = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 683                 kerneltime->dwHighDateTime = time >> 32;
 684                 kerneltime->dwLowDateTime = (DWORD)time;
 685             }
 686             if (usertime)
 687             {
 688                 time = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 689                 usertime->dwHighDateTime = time >> 32;
 690                 usertime->dwLowDateTime = (DWORD)time;
 691             }
 692         }
 693         else
 694         {
 695             if (kerneltime) kerneltime->dwHighDateTime = kerneltime->dwLowDateTime = 0;
 696             if (usertime) usertime->dwHighDateTime = usertime->dwLowDateTime = 0;
 697             FIXME("Cannot get kerneltime or usertime of other threads\n");
 698         }
 699     }
 700     return ret;
 701 }
 702
 703
 704 /**********************************************************************
 705  * VWin32_BoostThreadGroup [KERNEL.535]
 706  */
 707 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 708 {
 709     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 710 }
 711
 712 /**********************************************************************
 713  * VWin32_BoostThreadStatic [KERNEL.536]
 714  */
 715 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 716 {
 717     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 718 }
 719
 720
 721 /***********************************************************************
 722  * GetCurrentThread [KERNEL32.@]  Gets pseudohandle for current thread
 723  *
 724  * RETURNS
 725  *    Pseudohandle for the current thread
 726  */
 727 #undef GetCurrentThread
 728 HANDLE WINAPI GetCurrentThread(void)
 729 {
 730     return (HANDLE)0xfffffffe;
 731 }
 732
 733
 734 /***********************************************************************
 735  * ProcessIdToSessionId   (KERNEL32.@)
 736  * This function is available on Terminal Server 4SP4 and Windows 2000
 737  */
 738 BOOL WINAPI ProcessIdToSessionId( DWORD procid, DWORD *sessionid_ptr )
 739 {
 740         /* According to MSDN, if the calling process is not in a terminal
 741          * services environment, then the sessionid returned is zero.
 742          */
 743         *sessionid_ptr = 0;
 744         return TRUE;
 745 }
 746
 747 /***********************************************************************
 748  * SetThreadExecutionState (KERNEL32.@)
 749  *
 750  * Informs the system that activity is taking place for
 751  * power management purposes.
 752  */
 753 EXECUTION_STATE WINAPI SetThreadExecutionState(EXECUTION_STATE flags)
 754 {
 755     static EXECUTION_STATE current =
 756             ES_SYSTEM_REQUIRED|ES_DISPLAY_REQUIRED|ES_USER_PRESENT;
 757     EXECUTION_STATE old = current;
 758
 759     if (!(current & ES_CONTINUOUS) || (flags & ES_CONTINUOUS))
 760         current = flags;
 761     FIXME("(0x%lx): stub, harmless (power management).\n", flags);
 762     return old;
 763 }
 764
 765
 766 #ifdef __i386__
 767
 768 /***********************************************************************
 769  *              SetLastError (KERNEL.147)
 770  *              SetLastError (KERNEL32.@)
 771  */
 772 /* void WINAPI SetLastError( DWORD error ); */
 773 __ASM_GLOBAL_FUNC( SetLastError,
 774                    "movl 4(%esp),%eax\n\t"
 775                    ".byte 0x64\n\t"
 776                    "movl %eax,0x60\n\t"
 777                    "ret $4" );
 778
 779 /***********************************************************************
 780  *              GetLastError (KERNEL.148)
 781  *              GetLastError (KERNEL32.@)
 782  */
 783 /* DWORD WINAPI GetLastError(void); */
 784 __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
 785
 786 /***********************************************************************
 787  *              GetCurrentProcessId (KERNEL.471)
 788  *              GetCurrentProcessId (KERNEL32.@)
 789  */
 790 /* DWORD WINAPI GetCurrentProcessId(void) */
 791 __ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" );
 792
 793 /***********************************************************************
 794  *              GetCurrentThreadId (KERNEL.462)
 795  *              GetCurrentThreadId (KERNEL32.@)
 796  */
 797 /* DWORD WINAPI GetCurrentThreadId(void) */
 798 __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
 799
 800 #else  /* __i386__ */
 801
 802 /**********************************************************************
 803  *              SetLastError (KERNEL.147)
 804  *              SetLastError (KERNEL32.@)
 805  *
 806  * Sets the last-error code.
 807  */
 808 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 809 {
 810     NtCurrentTeb()->last_error = error;
 811 }
 812
 813 /**********************************************************************
 814  *              GetLastError (KERNEL.148)
 815  *              GetLastError (KERNEL32.@)
 816  *
 817  * Returns last-error code.
 818  */
 819 DWORD WINAPI GetLastError(void)
 820 {
 821     return NtCurrentTeb()->last_error;
 822 }
 823
 824 /***********************************************************************
 825  *              GetCurrentProcessId (KERNEL.471)
 826  *              GetCurrentProcessId (KERNEL32.@)
 827  *
 828  * Returns process identifier.
 829  */
 830 DWORD WINAPI GetCurrentProcessId(void)
 831 {
 832     return (DWORD)NtCurrentTeb()->pid;
 833 }
 834
 835 /***********************************************************************
 836  *              GetCurrentThreadId (KERNEL.462)
 837  *              GetCurrentThreadId (KERNEL32.@)
 838  *
 839  * Returns thread identifier.
 840  */
 841 DWORD WINAPI GetCurrentThreadId(void)
 842 {
 843     return NtCurrentTeb()->tid;
 844 }
 845
 846 #endif  /* __i386__ */