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 = SELECTOR_AllocBlock( teb, 0x1000, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
 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     FreeSelector16( teb->stack_sel );
 124     FreeSelector16( 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     FreeSelector16( teb->teb_sel );
 208     VirtualFree( base, 0, MEM_RELEASE );
 209     return NULL;
 210 }
 211
 212
 213 /***********************************************************************
 214  *           thread_errno_location
 215  *
 216  * Get the per-thread errno location.
 217  */
 218 static int *thread_errno_location(void)
 219 {
 220     return &NtCurrentTeb()->thread_errno;
 221 }
 222
 223 /***********************************************************************
 224  *           thread_h_errno_location
 225  *
 226  * Get the per-thread h_errno location.
 227  */
 228 static int *thread_h_errno_location(void)
 229 {
 230     return &NtCurrentTeb()->thread_h_errno;
 231 }
 232
 233 /***********************************************************************
 234  *           THREAD_Init
 235  *
 236  * Setup the initial thread.
 237  *
 238  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 239  */
 240 void THREAD_Init(void)
 241 {
 242     if (!initial_teb.self)  /* do it only once */
 243     {
 244         THREAD_InitTEB( &initial_teb );
 245         assert( initial_teb.teb_sel );
 246         initial_teb.process = &current_process;
 247         SYSDEPS_SetCurThread( &initial_teb );
 248         wine_errno_location = thread_errno_location;
 249         wine_h_errno_location = thread_h_errno_location;
 250     }
 251 }
 252
 253 DECL_GLOBAL_CONSTRUCTOR(thread_init) { THREAD_Init(); }
 254
 255
 256 /***********************************************************************
 257  *           THREAD_Start
 258  *
 259  * Start execution of a newly created thread. Does not return.
 260  */
 261 static void THREAD_Start(void)
 262 {
 263     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)NtCurrentTeb()->entry_point;
 264
 265     if (TRACE_ON(relay))
 266         DPRINTF("%08lx:Starting thread (entryproc=%p)\n", GetCurrentThreadId(), func );
 267
 268     PROCESS_CallUserSignalProc( USIG_THREAD_INIT, 0 );
 269     MODULE_DllThreadAttach( NULL );
 270     ExitThread( func( NtCurrentTeb()->entry_arg ) );
 271 }
 272
 273
 274 /***********************************************************************
 275  *           CreateThread   (KERNEL32.@)
 276  */
 277 HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, SIZE_T stack,
 278                             LPTHREAD_START_ROUTINE start, LPVOID param,
 279                             DWORD flags, LPDWORD id )
 280 {
 281     HANDLE handle = 0;
 282     TEB *teb;
 283     DWORD tid = 0;
 284     int request_pipe[2];
 285
 286     if (pipe( request_pipe ) == -1)
 287     {
 288         SetLastError( ERROR_TOO_MANY_OPEN_FILES );
 289         return 0;
 290     }
 291     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 292     wine_server_send_fd( request_pipe[0] );
 293
 294     SERVER_START_REQ( new_thread )
 295     {
 296         req->suspend    = ((flags & CREATE_SUSPENDED) != 0);
 297         req->inherit    = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
 298         req->request_fd = request_pipe[0];
 299         if (!wine_server_call_err( req ))
 300         {
 301             handle = reply->handle;
 302             tid = reply->tid;
 303         }
 304         close( request_pipe[0] );
 305     }
 306     SERVER_END_REQ;
 307
 308     if (!handle || !(teb = THREAD_InitStack( NULL, stack )))
 309     {
 310         close( request_pipe[1] );
 311         return 0;
 312     }
 313
 314     teb->process     = NtCurrentTeb()->process;
 315     teb->tid         = tid;
 316     teb->request_fd  = request_pipe[1];
 317     teb->entry_point = start;
 318     teb->entry_arg   = param;
 319     teb->startup     = THREAD_Start;
 320     teb->htask16     = GetCurrentTask();
 321
 322     if (id) *id = tid;
 323     if (SYSDEPS_SpawnThread( teb ) == -1)
 324     {
 325         CloseHandle( handle );
 326         close( request_pipe[1] );
 327         THREAD_FreeTEB( teb );
 328         return 0;
 329     }
 330     return handle;
 331 }
 332
 333 /***********************************************************************
 334  *           CreateThread16   (KERNEL.441)
 335  */
 336 static DWORD CALLBACK THREAD_StartThread16( LPVOID threadArgs )
 337 {
 338     FARPROC16 start = ((FARPROC16 *)threadArgs)[0];
 339     DWORD     param = ((DWORD *)threadArgs)[1];
 340     HeapFree( GetProcessHeap(), 0, threadArgs );
 341
 342     ((LPDWORD)CURRENT_STACK16)[-1] = param;
 343     return wine_call_to_16( start, sizeof(DWORD) );
 344 }
 345 HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
 346                               FARPROC16 start, SEGPTR param,
 347                               DWORD flags, LPDWORD id )
 348 {
 349     DWORD *threadArgs = HeapAlloc( GetProcessHeap(), 0, 2*sizeof(DWORD) );
 350     if (!threadArgs) return INVALID_HANDLE_VALUE;
 351     threadArgs[0] = (DWORD)start;
 352     threadArgs[1] = (DWORD)param;
 353
 354     return CreateThread( sa, stack, THREAD_StartThread16, threadArgs, flags, id );
 355 }
 356
 357
 358 /***********************************************************************
 359  * ExitThread [KERNEL32.@]  Ends a thread
 360  *
 361  * RETURNS
 362  *    None
 363  */
 364 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 365 {
 366     BOOL last;
 367     SERVER_START_REQ( terminate_thread )
 368     {
 369         /* send the exit code to the server */
 370         req->handle    = GetCurrentThread();
 371         req->exit_code = code;
 372         wine_server_call( req );
 373         last = reply->last;
 374     }
 375     SERVER_END_REQ;
 376
 377     if (last)
 378     {
 379         MODULE_DllProcessDetach( TRUE, (LPVOID)1 );
 380         exit( code );
 381     }
 382     else
 383     {
 384         MODULE_DllThreadDetach( NULL );
 385         if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask();
 386         SYSDEPS_ExitThread( code );
 387     }
 388 }
 389
 390 /***********************************************************************
 391  * OpenThread Retrieves a handle to a thread from its thread id
 392  *
 393  * RETURNS
 394  *    None
 395  */
 396 HANDLE WINAPI OpenThread( DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId )
 397 {
 398     HANDLE ret = 0;
 399     SERVER_START_REQ( open_thread )
 400     {
 401         req->tid     = dwThreadId;
 402         req->access  = dwDesiredAccess;
 403         req->inherit = bInheritHandle;
 404         if (!wine_server_call_err( req )) ret = reply->handle;
 405     }
 406     SERVER_END_REQ;
 407     return ret;
 408 }
 409
 410 /***********************************************************************
 411  * SetThreadContext [KERNEL32.@]  Sets context of thread.
 412  *
 413  * RETURNS
 414  *    Success: TRUE
 415  *    Failure: FALSE
 416  */
 417 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 418                               const CONTEXT *context ) /* [in] Address of context structure */
 419 {
 420     BOOL ret;
 421     SERVER_START_REQ( set_thread_context )
 422     {
 423         req->handle = handle;
 424         req->flags = context->ContextFlags;
 425         wine_server_add_data( req, context, sizeof(*context) );
 426         ret = !wine_server_call_err( req );
 427     }
 428     SERVER_END_REQ;
 429     return ret;
 430 }
 431
 432
 433 /***********************************************************************
 434  * GetThreadContext [KERNEL32.@]  Retrieves context of thread.
 435  *
 436  * RETURNS
 437  *    Success: TRUE
 438  *    Failure: FALSE
 439  */
 440 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 441                               CONTEXT *context ) /* [out] Address of context structure */
 442 {
 443     BOOL ret;
 444     SERVER_START_REQ( get_thread_context )
 445     {
 446         req->handle = handle;
 447         req->flags = context->ContextFlags;
 448         wine_server_add_data( req, context, sizeof(*context) );
 449         wine_server_set_reply( req, context, sizeof(*context) );
 450         ret = !wine_server_call_err( req );
 451     }
 452     SERVER_END_REQ;
 453     return ret;
 454 }
 455
 456
 457 /**********************************************************************
 458  * GetThreadPriority [KERNEL32.@]  Returns priority for thread.
 459  *
 460  * RETURNS
 461  *    Success: Thread's priority level.
 462  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 463  */
 464 INT WINAPI GetThreadPriority(
 465     HANDLE hthread) /* [in] Handle to thread */
 466 {
 467     INT ret = THREAD_PRIORITY_ERROR_RETURN;
 468     SERVER_START_REQ( get_thread_info )
 469     {
 470         req->handle = hthread;
 471         req->tid_in = 0;
 472         if (!wine_server_call_err( req )) ret = reply->priority;
 473     }
 474     SERVER_END_REQ;
 475     return ret;
 476 }
 477
 478
 479 /**********************************************************************
 480  * SetThreadPriority [KERNEL32.@]  Sets priority for thread.
 481  *
 482  * RETURNS
 483  *    Success: TRUE
 484  *    Failure: FALSE
 485  */
 486 BOOL WINAPI SetThreadPriority(
 487     HANDLE hthread, /* [in] Handle to thread */
 488     INT priority)   /* [in] Thread priority level */
 489 {
 490     BOOL ret;
 491     SERVER_START_REQ( set_thread_info )
 492     {
 493         req->handle   = hthread;
 494         req->priority = priority;
 495         req->mask     = SET_THREAD_INFO_PRIORITY;
 496         ret = !wine_server_call_err( req );
 497     }
 498     SERVER_END_REQ;
 499     return ret;
 500 }
 501
 502
 503 /**********************************************************************
 504  * GetThreadPriorityBoost [KERNEL32.@]  Returns priority boost for thread.
 505  *
 506  * Always reports that priority boost is disabled.
 507  *
 508  * RETURNS
 509  *    Success: TRUE.
 510  *    Failure: FALSE
 511  */
 512 BOOL WINAPI GetThreadPriorityBoost(
 513     HANDLE hthread, /* [in] Handle to thread */
 514     PBOOL pstate)   /* [out] pointer to var that receives the boost state */
 515 {
 516     if (pstate) *pstate = FALSE;
 517     return NO_ERROR;
 518 }
 519
 520
 521 /**********************************************************************
 522  * SetThreadPriorityBoost [KERNEL32.@]  Sets priority boost for thread.
 523  *
 524  * Priority boost is not implemented. Thsi function always returns
 525  * FALSE and sets last error to ERROR_CALL_NOT_IMPLEMENTED
 526  *
 527  * RETURNS
 528  *    Always returns FALSE to indicate a failure
 529  */
 530 BOOL WINAPI SetThreadPriorityBoost(
 531     HANDLE hthread, /* [in] Handle to thread */
 532     BOOL disable)   /* [in] TRUE to disable priority boost */
 533 {
 534     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 535     return FALSE;
 536 }
 537
 538
 539 /**********************************************************************
 540  *           SetThreadAffinityMask   (KERNEL32.@)
 541  */
 542 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 543 {
 544     DWORD ret;
 545     SERVER_START_REQ( set_thread_info )
 546     {
 547         req->handle   = hThread;
 548         req->affinity = dwThreadAffinityMask;
 549         req->mask     = SET_THREAD_INFO_AFFINITY;
 550         ret = !wine_server_call_err( req );
 551         /* FIXME: should return previous value */
 552     }
 553     SERVER_END_REQ;
 554     return ret;
 555 }
 556
 557 /**********************************************************************
 558  * SetThreadIdealProcessor [KERNEL32.@]  Obtains timing information.
 559  *
 560  * RETURNS
 561  *    Success: Value of last call to SetThreadIdealProcessor
 562  *    Failure: -1
 563  */
 564 DWORD WINAPI SetThreadIdealProcessor(
 565     HANDLE hThread,          /* [in] Specifies the thread of interest */
 566     DWORD dwIdealProcessor)  /* [in] Specifies the new preferred processor */
 567 {
 568     FIXME("(0x%p): stub\n",hThread);
 569     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 570     return -1L;
 571 }
 572
 573 /**********************************************************************
 574  * TerminateThread [KERNEL32.@]  Terminates a thread
 575  *
 576  * RETURNS
 577  *    Success: TRUE
 578  *    Failure: FALSE
 579  */
 580 BOOL WINAPI TerminateThread( HANDLE handle,    /* [in] Handle to thread */
 581                              DWORD exit_code)  /* [in] Exit code for thread */
 582 {
 583     NTSTATUS status = NtTerminateThread( handle, exit_code );
 584     if (status) SetLastError( RtlNtStatusToDosError(status) );
 585     return !status;
 586 }
 587
 588
 589 /**********************************************************************
 590  *              GetExitCodeThread (KERNEL32.@)
 591  *
 592  * Gets termination status of thread.
 593  *
 594  * RETURNS
 595  *    Success: TRUE
 596  *    Failure: FALSE
 597  */
 598 BOOL WINAPI GetExitCodeThread(
 599     HANDLE hthread, /* [in]  Handle to thread */
 600     LPDWORD exitcode) /* [out] Address to receive termination status */
 601 {
 602     BOOL ret;
 603     SERVER_START_REQ( get_thread_info )
 604     {
 605         req->handle = hthread;
 606         req->tid_in = 0;
 607         ret = !wine_server_call_err( req );
 608         if (ret && exitcode) *exitcode = reply->exit_code;
 609     }
 610     SERVER_END_REQ;
 611     return ret;
 612 }
 613
 614
 615 /**********************************************************************
 616  * ResumeThread [KERNEL32.@]  Resumes a thread.
 617  *
 618  * Decrements a thread's suspend count.  When count is zero, the
 619  * execution of the thread is resumed.
 620  *
 621  * RETURNS
 622  *    Success: Previous suspend count
 623  *    Failure: 0xFFFFFFFF
 624  *    Already running: 0
 625  */
 626 DWORD WINAPI ResumeThread(
 627     HANDLE hthread) /* [in] Identifies thread to restart */
 628 {
 629     DWORD ret = 0xffffffff;
 630     SERVER_START_REQ( resume_thread )
 631     {
 632         req->handle = hthread;
 633         if (!wine_server_call_err( req )) ret = reply->count;
 634     }
 635     SERVER_END_REQ;
 636     return ret;
 637 }
 638
 639
 640 /**********************************************************************
 641  * SuspendThread [KERNEL32.@]  Suspends a thread.
 642  *
 643  * RETURNS
 644  *    Success: Previous suspend count
 645  *    Failure: 0xFFFFFFFF
 646  */
 647 DWORD WINAPI SuspendThread(
 648     HANDLE hthread) /* [in] Handle to the thread */
 649 {
 650     DWORD ret = 0xffffffff;
 651     SERVER_START_REQ( suspend_thread )
 652     {
 653         req->handle = hthread;
 654         if (!wine_server_call_err( req )) ret = reply->count;
 655     }
 656     SERVER_END_REQ;
 657     return ret;
 658 }
 659
 660
 661 /***********************************************************************
 662  *              QueueUserAPC  (KERNEL32.@)
 663  */
 664 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 665 {
 666     DWORD ret;
 667     SERVER_START_REQ( queue_apc )
 668     {
 669         req->handle = hthread;
 670         req->user   = 1;
 671         req->func   = func;
 672         req->param  = (void *)data;
 673         ret = !wine_server_call_err( req );
 674     }
 675     SERVER_END_REQ;
 676     return ret;
 677 }
 678
 679
 680 /**********************************************************************
 681  * GetThreadTimes [KERNEL32.@]  Obtains timing information.
 682  *
 683  * RETURNS
 684  *    Success: TRUE
 685  *    Failure: FALSE
 686  */
 687 BOOL WINAPI GetThreadTimes(
 688     HANDLE thread,         /* [in]  Specifies the thread of interest */
 689     LPFILETIME creationtime, /* [out] When the thread was created */
 690     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 691     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 692     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 693 {
 694     BOOL ret = TRUE;
 695
 696     if (creationtime || exittime)
 697     {
 698         /* We need to do a server call to get the creation time or exit time */
 699         /* This works on any thread */
 700
 701         SERVER_START_REQ( get_thread_info )
 702         {
 703             req->handle = thread;
 704             req->tid_in = 0;
 705             if ((ret = !wine_server_call_err( req )))
 706             {
 707                 if (creationtime)
 708                     RtlSecondsSince1970ToTime( reply->creation_time, (LARGE_INTEGER*)creationtime );
 709                 if (exittime)
 710                     RtlSecondsSince1970ToTime( reply->exit_time, (LARGE_INTEGER*)exittime );
 711             }
 712         }
 713         SERVER_END_REQ;
 714     }
 715     if (ret && (kerneltime || usertime))
 716     {
 717         /* We call times(2) for kernel time or user time */
 718         /* We can only (portably) do this for the current thread */
 719         if (thread == GetCurrentThread())
 720         {
 721             ULONGLONG time;
 722             struct tms time_buf;
 723             long clocks_per_sec = sysconf(_SC_CLK_TCK);
 724
 725             times(&time_buf);
 726             if (kerneltime)
 727             {
 728                 time = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 729                 kerneltime->dwHighDateTime = time >> 32;
 730                 kerneltime->dwLowDateTime = (DWORD)time;
 731             }
 732             if (usertime)
 733             {
 734                 time = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 735                 usertime->dwHighDateTime = time >> 32;
 736                 usertime->dwLowDateTime = (DWORD)time;
 737             }
 738         }
 739         else
 740         {
 741             if (kerneltime) kerneltime->dwHighDateTime = kerneltime->dwLowDateTime = 0;
 742             if (usertime) usertime->dwHighDateTime = usertime->dwLowDateTime = 0;
 743             FIXME("Cannot get kerneltime or usertime of other threads\n");
 744         }
 745     }
 746     return ret;
 747 }
 748
 749
 750 /**********************************************************************
 751  * VWin32_BoostThreadGroup [KERNEL.535]
 752  */
 753 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 754 {
 755     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 756 }
 757
 758 /**********************************************************************
 759  * VWin32_BoostThreadStatic [KERNEL.536]
 760  */
 761 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 762 {
 763     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 764 }
 765
 766
 767 /***********************************************************************
 768  * GetCurrentThread [KERNEL32.@]  Gets pseudohandle for current thread
 769  *
 770  * RETURNS
 771  *    Pseudohandle for the current thread
 772  */
 773 #undef GetCurrentThread
 774 HANDLE WINAPI GetCurrentThread(void)
 775 {
 776     return (HANDLE)0xfffffffe;
 777 }
 778
 779
 780 /***********************************************************************
 781  * ProcessIdToSessionId   (KERNEL32.@)
 782  * This function is available on Terminal Server 4SP4 and Windows 2000
 783  */
 784 BOOL WINAPI ProcessIdToSessionId( DWORD procid, DWORD *sessionid_ptr )
 785 {
 786         /* According to MSDN, if the calling process is not in a terminal
 787          * services environment, then the sessionid returned is zero.
 788          */
 789         *sessionid_ptr = 0;
 790         return TRUE;
 791 }
 792
 793 /***********************************************************************
 794  * SetThreadExecutionState (KERNEL32.@)
 795  *
 796  * Informs the system that activity is taking place for
 797  * power management purposes.
 798  */
 799 EXECUTION_STATE WINAPI SetThreadExecutionState(EXECUTION_STATE flags)
 800 {
 801     static EXECUTION_STATE current =
 802             ES_SYSTEM_REQUIRED|ES_DISPLAY_REQUIRED|ES_USER_PRESENT;
 803     EXECUTION_STATE old = current;
 804
 805     if (!(current & ES_CONTINUOUS) || (flags & ES_CONTINUOUS))
 806         current = flags;
 807     FIXME("(0x%lx): stub, harmless (power management).\n", flags);
 808     return old;
 809 }
 810
 811
 812 #ifdef __i386__
 813
 814 /***********************************************************************
 815  *              SetLastError (KERNEL.147)
 816  *              SetLastError (KERNEL32.@)
 817  */
 818 /* void WINAPI SetLastError( DWORD error ); */
 819 __ASM_GLOBAL_FUNC( SetLastError,
 820                    "movl 4(%esp),%eax\n\t"
 821                    ".byte 0x64\n\t"
 822                    "movl %eax,0x60\n\t"
 823                    "ret $4" );
 824
 825 /***********************************************************************
 826  *              GetLastError (KERNEL.148)
 827  *              GetLastError (KERNEL32.@)
 828  */
 829 /* DWORD WINAPI GetLastError(void); */
 830 __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
 831
 832 /***********************************************************************
 833  *              GetCurrentProcessId (KERNEL.471)
 834  *              GetCurrentProcessId (KERNEL32.@)
 835  */
 836 /* DWORD WINAPI GetCurrentProcessId(void) */
 837 __ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" );
 838
 839 /***********************************************************************
 840  *              GetCurrentThreadId (KERNEL.462)
 841  *              GetCurrentThreadId (KERNEL32.@)
 842  */
 843 /* DWORD WINAPI GetCurrentThreadId(void) */
 844 __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
 845
 846 #else  /* __i386__ */
 847
 848 /**********************************************************************
 849  *              SetLastError (KERNEL.147)
 850  *              SetLastError (KERNEL32.@)
 851  *
 852  * Sets the last-error code.
 853  */
 854 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 855 {
 856     NtCurrentTeb()->last_error = error;
 857 }
 858
 859 /**********************************************************************
 860  *              GetLastError (KERNEL.148)
 861  *              GetLastError (KERNEL32.@)
 862  *
 863  * Returns last-error code.
 864  */
 865 DWORD WINAPI GetLastError(void)
 866 {
 867     return NtCurrentTeb()->last_error;
 868 }
 869
 870 /***********************************************************************
 871  *              GetCurrentProcessId (KERNEL.471)
 872  *              GetCurrentProcessId (KERNEL32.@)
 873  *
 874  * Returns process identifier.
 875  */
 876 DWORD WINAPI GetCurrentProcessId(void)
 877 {
 878     return (DWORD)NtCurrentTeb()->pid;
 879 }
 880
 881 /***********************************************************************
 882  *              GetCurrentThreadId (KERNEL.462)
 883  *              GetCurrentThreadId (KERNEL32.@)
 884  *
 885  * Returns thread identifier.
 886  */
 887 DWORD WINAPI GetCurrentThreadId(void)
 888 {
 889     return (DWORD)NtCurrentTeb()->tid;
 890 }
 891
 892 #endif  /* __i386__ */