scheduler/thread.c

   1 /*
   2  * Win32 threads
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  */
   6
   7 #include "config.h"
   8
   9 #include <assert.h>
  10 #include <fcntl.h>
  11 #include <sys/types.h>
  12 #ifdef HAVE_SYS_MMAN_H
  13 #include <sys/mman.h>
  14 #endif
  15 #include <unistd.h>
  16 #include "wine/winbase16.h"
  17 #include "thread.h"
  18 #include "process.h"
  19 #include "task.h"
  20 #include "module.h"
  21 #include "global.h"
  22 #include "winerror.h"
  23 #include "heap.h"
  24 #include "selectors.h"
  25 #include "winnt.h"
  26 #include "server.h"
  27 #include "services.h"
  28 #include "stackframe.h"
  29 #include "builtin16.h"
  30 #include "debugtools.h"
  31 #include "winnls.h"
  32
  33 DEFAULT_DEBUG_CHANNEL(thread);
  34
  35 /* TEB of the initial thread */
  36 static TEB initial_teb;
  37
  38 /***********************************************************************
  39  *           THREAD_IsWin16
  40  */
  41 BOOL THREAD_IsWin16( TEB *teb )
  42 {
  43     return !teb || !(teb->tibflags & TEBF_WIN32);
  44 }
  45
  46 /***********************************************************************
  47  *           THREAD_IdToTEB
  48  *
  49  * Convert a thread id to a TEB, making sure it is valid.
  50  */
  51 TEB *THREAD_IdToTEB( DWORD id )
  52 {
  53     TEB *ret = NULL;
  54
  55     if (!id || id == GetCurrentThreadId()) return NtCurrentTeb();
  56
  57     SERVER_START_REQ
  58     {
  59         struct get_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
  60         req->handle = -1;
  61         req->tid_in = (void *)id;
  62         if (!server_call_noerr( REQ_GET_THREAD_INFO )) ret = req->teb;
  63     }
  64     SERVER_END_REQ;
  65
  66     if (!ret)
  67     {
  68         /* Allow task handles to be used; convert to main thread */
  69         if ( IsTask16( id ) )
  70         {
  71             TDB *pTask = (TDB *)GlobalLock16( id );
  72             if (pTask) return pTask->teb;
  73         }
  74         SetLastError( ERROR_INVALID_PARAMETER );
  75     }
  76     return ret;
  77 }
  78
  79
  80 /***********************************************************************
  81  *           THREAD_InitTEB
  82  *
  83  * Initialization of a newly created TEB.
  84  */
  85 static BOOL THREAD_InitTEB( TEB *teb )
  86 {
  87     teb->except    = (void *)~0UL;
  88     teb->self      = teb;
  89     teb->tibflags  = TEBF_WIN32;
  90     teb->tls_ptr   = teb->tls_array;
  91     teb->exit_code = STILL_ACTIVE;
  92     teb->socket    = -1;
  93     teb->stack_top = (void *)~0UL;
  94     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
  95     teb->StaticUnicodeString.Buffer = (PWSTR)teb->StaticUnicodeBuffer;
  96     teb->teb_sel = SELECTOR_AllocBlock( teb, 0x1000, WINE_LDT_FLAGS_DATA|WINE_LDT_FLAGS_32BIT );
  97     return (teb->teb_sel != 0);
  98 }
  99
 100
 101 /***********************************************************************
 102  *           THREAD_FreeTEB
 103  *
 104  * Free data structures associated with a thread.
 105  * Must be called from the context of another thread.
 106  */
 107 static void CALLBACK THREAD_FreeTEB( TEB *teb )
 108 {
 109     TRACE("(%p) called\n", teb );
 110     if (teb->cleanup) SERVICE_Delete( teb->cleanup );
 111
 112     /* Free the associated memory */
 113
 114     if (teb->socket != -1) close( teb->socket );
 115     if (teb->stack_sel) FreeSelector16( teb->stack_sel );
 116     FreeSelector16( teb->teb_sel );
 117     if (teb->buffer) munmap( (void *)teb->buffer,
 118                              (char *)(teb->buffer_info+1) - (char *)teb->buffer );
 119     if (teb->debug_info) HeapFree( GetProcessHeap(), 0, teb->debug_info );
 120     VirtualFree( teb->stack_base, 0, MEM_RELEASE );
 121 }
 122
 123
 124 /***********************************************************************
 125  *           THREAD_InitStack
 126  *
 127  * Allocate the stack of a thread.
 128  */
 129 TEB *THREAD_InitStack( TEB *teb, DWORD stack_size, BOOL alloc_stack16 )
 130 {
 131     DWORD old_prot, total_size;
 132     DWORD page_size = VIRTUAL_GetPageSize();
 133     void *base;
 134
 135     /* Allocate the stack */
 136
 137     if (stack_size >= 16*1024*1024)
 138         WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024);
 139
 140     /* if size is smaller than default, get stack size from parent */
 141     if (stack_size < 1024 * 1024)
 142     {
 143         if (teb)
 144             stack_size = 1024 * 1024;  /* no parent */
 145         else
 146             stack_size = ((char *)NtCurrentTeb()->stack_top - (char *)NtCurrentTeb()->stack_base
 147                           - SIGNAL_STACK_SIZE - 3 * page_size);
 148     }
 149
 150     /* FIXME: some Wine functions use a lot of stack, so we add 64Kb here */
 151     stack_size += 64 * 1024;
 152
 153     /* Memory layout in allocated block:
 154      *
 155      *   size                 contents
 156      * 1 page              NOACCESS guard page
 157      * SIGNAL_STACK_SIZE   signal stack
 158      * 1 page              NOACCESS guard page
 159      * 1 page              PAGE_GUARD guard page
 160      * stack_size          normal stack
 161      * 64Kb                16-bit stack (optional)
 162      * 1 page              TEB (except for initial thread)
 163      */
 164
 165     stack_size = (stack_size + (page_size - 1)) & ~(page_size - 1);
 166     total_size = stack_size + SIGNAL_STACK_SIZE + 3 * page_size;
 167     if (alloc_stack16) total_size += 0x10000;
 168     if (!teb) total_size += page_size;
 169
 170     if (!(base = VirtualAlloc( NULL, total_size, MEM_COMMIT, PAGE_EXECUTE_READWRITE )))
 171         return NULL;
 172
 173     if (!teb)
 174     {
 175         teb = (TEB *)((char *)base + total_size - page_size);
 176         if (!THREAD_InitTEB( teb ))
 177         {
 178             VirtualFree( base, 0, MEM_RELEASE );
 179             return NULL;
 180         }
 181     }
 182
 183     teb->stack_low    = base;
 184     teb->stack_base   = base;
 185     teb->signal_stack = (char *)base + page_size;
 186     teb->stack_top    = (char *)base + 3 * page_size + SIGNAL_STACK_SIZE + stack_size;
 187
 188     /* Setup guard pages */
 189
 190     VirtualProtect( base, 1, PAGE_NOACCESS, &old_prot );
 191     VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE, 1, PAGE_NOACCESS, &old_prot );
 192     VirtualProtect( (char *)teb->signal_stack + SIGNAL_STACK_SIZE + page_size, 1,
 193                     PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_prot );
 194
 195     /* Allocate the 16-bit stack selector */
 196
 197     if (alloc_stack16)
 198     {
 199         teb->stack_sel = SELECTOR_AllocBlock( teb->stack_top, 0x10000, WINE_LDT_FLAGS_DATA );
 200         if (!teb->stack_sel) goto error;
 201         teb->cur_stack = PTR_SEG_OFF_TO_SEGPTR( teb->stack_sel,
 202                                                 0x10000 - sizeof(STACK16FRAME) );
 203     }
 204     return teb;
 205
 206 error:
 207     THREAD_FreeTEB( teb );
 208     return NULL;
 209 }
 210
 211
 212 /***********************************************************************
 213  *           THREAD_Init
 214  *
 215  * Setup the initial thread.
 216  *
 217  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 218  */
 219 void THREAD_Init(void)
 220 {
 221     if (!initial_teb.self)  /* do it only once */
 222     {
 223         THREAD_InitTEB( &initial_teb );
 224         assert( initial_teb.teb_sel );
 225         initial_teb.process = &current_process;
 226         SYSDEPS_SetCurThread( &initial_teb );
 227     }
 228 }
 229
 230 DECL_GLOBAL_CONSTRUCTOR(thread_init) { THREAD_Init(); }
 231
 232 /***********************************************************************
 233  *           THREAD_Create
 234  *
 235  */
 236 TEB *THREAD_Create( int fd, DWORD stack_size, BOOL alloc_stack16 )
 237 {
 238     TEB *teb;
 239
 240     if ((teb = THREAD_InitStack( NULL, stack_size, alloc_stack16 )))
 241     {
 242         teb->tibflags = (current_process.flags & PDB32_WIN16_PROC) ? 0 : TEBF_WIN32;
 243         teb->process  = &current_process;
 244         teb->socket   = fd;
 245         fcntl( fd, F_SETFD, 1 ); /* set close on exec flag */
 246         TRACE("(%p) succeeded\n", teb);
 247     }
 248     return teb;
 249 }
 250
 251
 252 /***********************************************************************
 253  *           THREAD_Start
 254  *
 255  * Start execution of a newly created thread. Does not return.
 256  */
 257 static void THREAD_Start(void)
 258 {
 259     HANDLE cleanup_object;
 260     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)NtCurrentTeb()->entry_point;
 261
 262     /* install cleanup handler */
 263     if (DuplicateHandle( GetCurrentProcess(), GetCurrentThread(),
 264                          GetCurrentProcess(), &cleanup_object,
 265                          0, FALSE, DUPLICATE_SAME_ACCESS ))
 266         NtCurrentTeb()->cleanup = SERVICE_AddObject( cleanup_object, (PAPCFUNC)THREAD_FreeTEB,
 267                                                      (ULONG_PTR)NtCurrentTeb() );
 268
 269     PROCESS_CallUserSignalProc( USIG_THREAD_INIT, 0 );
 270     PE_InitTls();
 271     MODULE_DllThreadAttach( NULL );
 272     ExitThread( func( NtCurrentTeb()->entry_arg ) );
 273 }
 274
 275
 276 /***********************************************************************
 277  *           CreateThread   (KERNEL32.63)
 278  */
 279 HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, DWORD stack,
 280                             LPTHREAD_START_ROUTINE start, LPVOID param,
 281                             DWORD flags, LPDWORD id )
 282 {
 283     int socket, handle = -1;
 284     TEB *teb;
 285     void *tid = 0;
 286
 287     SERVER_START_REQ
 288     {
 289         struct new_thread_request *req = server_alloc_req( sizeof(*req), 0 );
 290
 291         req->suspend = ((flags & CREATE_SUSPENDED) != 0);
 292         req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
 293         if (!server_call_fd( REQ_NEW_THREAD, -1, &socket ))
 294         {
 295             handle = req->handle;
 296             tid = req->tid;
 297         }
 298     }
 299     SERVER_END_REQ;
 300     if (handle == -1) return 0;
 301
 302     if (!(teb = THREAD_Create( socket, stack, TRUE )))
 303     {
 304         close( socket );
 305         return 0;
 306     }
 307     teb->tibflags   |= TEBF_WIN32;
 308     teb->entry_point = start;
 309     teb->entry_arg   = param;
 310     teb->startup     = THREAD_Start;
 311     teb->htask16     = GetCurrentTask();
 312     if (id) *id = (DWORD)tid;
 313     if (SYSDEPS_SpawnThread( teb ) == -1)
 314     {
 315         CloseHandle( handle );
 316         THREAD_FreeTEB( teb );
 317         return 0;
 318     }
 319     return handle;
 320 }
 321
 322 /***********************************************************************
 323  *           CreateThread16   (KERNEL.441)
 324  */
 325 static DWORD CALLBACK THREAD_StartThread16( LPVOID threadArgs )
 326 {
 327     FARPROC16 start = ((FARPROC16 *)threadArgs)[0];
 328     DWORD     param = ((DWORD *)threadArgs)[1];
 329     HeapFree( GetProcessHeap(), 0, threadArgs );
 330
 331     ((LPDWORD)CURRENT_STACK16)[-1] = param;
 332     return wine_call_to_16_long( start, sizeof(DWORD) );
 333 }
 334 HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
 335                               FARPROC16 start, SEGPTR param,
 336                               DWORD flags, LPDWORD id )
 337 {
 338     DWORD *threadArgs = HeapAlloc( GetProcessHeap(), 0, 2*sizeof(DWORD) );
 339     if (!threadArgs) return INVALID_HANDLE_VALUE;
 340     threadArgs[0] = (DWORD)start;
 341     threadArgs[1] = (DWORD)param;
 342
 343     return CreateThread( sa, stack, THREAD_StartThread16, threadArgs, flags, id );
 344 }
 345
 346
 347 /***********************************************************************
 348  * ExitThread [KERNEL32.215]  Ends a thread
 349  *
 350  * RETURNS
 351  *    None
 352  */
 353 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 354 {
 355     BOOL last;
 356     SERVER_START_REQ
 357     {
 358         struct terminate_thread_request *req = server_alloc_req( sizeof(*req), 0 );
 359
 360         /* send the exit code to the server */
 361         req->handle    = GetCurrentThread();
 362         req->exit_code = code;
 363         server_call( REQ_TERMINATE_THREAD );
 364         last = req->last;
 365     }
 366     SERVER_END_REQ;
 367
 368     if (last)
 369     {
 370         MODULE_DllProcessDetach( TRUE, (LPVOID)1 );
 371         exit( code );
 372     }
 373     else
 374     {
 375         MODULE_DllThreadDetach( NULL );
 376         if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask();
 377         SYSDEPS_ExitThread( code );
 378     }
 379 }
 380
 381
 382 /**********************************************************************
 383  * TlsAlloc [KERNEL32.530]  Allocates a TLS index.
 384  *
 385  * Allocates a thread local storage index
 386  *
 387  * RETURNS
 388  *    Success: TLS Index
 389  *    Failure: 0xFFFFFFFF
 390  */
 391 DWORD WINAPI TlsAlloc( void )
 392 {
 393     DWORD i, mask, ret = 0;
 394     DWORD *bits = current_process.tls_bits;
 395     EnterCriticalSection( &current_process.crit_section );
 396     if (*bits == 0xffffffff)
 397     {
 398         bits++;
 399         ret = 32;
 400         if (*bits == 0xffffffff)
 401         {
 402             LeaveCriticalSection( &current_process.crit_section );
 403             SetLastError( ERROR_NO_MORE_ITEMS );
 404             return 0xffffffff;
 405         }
 406     }
 407     for (i = 0, mask = 1; i < 32; i++, mask <<= 1) if (!(*bits & mask)) break;
 408     *bits |= mask;
 409     LeaveCriticalSection( &current_process.crit_section );
 410     return ret + i;
 411 }
 412
 413
 414 /**********************************************************************
 415  * TlsFree [KERNEL32.531]  Releases a TLS index.
 416  *
 417  * Releases a thread local storage index, making it available for reuse
 418  *
 419  * RETURNS
 420  *    Success: TRUE
 421  *    Failure: FALSE
 422  */
 423 BOOL WINAPI TlsFree(
 424     DWORD index) /* [in] TLS Index to free */
 425 {
 426     DWORD mask;
 427     DWORD *bits = current_process.tls_bits;
 428     if (index >= 64)
 429     {
 430         SetLastError( ERROR_INVALID_PARAMETER );
 431         return FALSE;
 432     }
 433     EnterCriticalSection( &current_process.crit_section );
 434     if (index >= 32) bits++;
 435     mask = (1 << (index & 31));
 436     if (!(*bits & mask))  /* already free? */
 437     {
 438         LeaveCriticalSection( &current_process.crit_section );
 439         SetLastError( ERROR_INVALID_PARAMETER );
 440         return FALSE;
 441     }
 442     *bits &= ~mask;
 443     NtCurrentTeb()->tls_array[index] = 0;
 444     /* FIXME: should zero all other thread values */
 445     LeaveCriticalSection( &current_process.crit_section );
 446     return TRUE;
 447 }
 448
 449
 450 /**********************************************************************
 451  * TlsGetValue [KERNEL32.532]  Gets value in a thread's TLS slot
 452  *
 453  * RETURNS
 454  *    Success: Value stored in calling thread's TLS slot for index
 455  *    Failure: 0 and GetLastError returns NO_ERROR
 456  */
 457 LPVOID WINAPI TlsGetValue(
 458     DWORD index) /* [in] TLS index to retrieve value for */
 459 {
 460     if (index >= 64)
 461     {
 462         SetLastError( ERROR_INVALID_PARAMETER );
 463         return NULL;
 464     }
 465     SetLastError( ERROR_SUCCESS );
 466     return NtCurrentTeb()->tls_array[index];
 467 }
 468
 469
 470 /**********************************************************************
 471  * TlsSetValue [KERNEL32.533]  Stores a value in the thread's TLS slot.
 472  *
 473  * RETURNS
 474  *    Success: TRUE
 475  *    Failure: FALSE
 476  */
 477 BOOL WINAPI TlsSetValue(
 478     DWORD index,  /* [in] TLS index to set value for */
 479     LPVOID value) /* [in] Value to be stored */
 480 {
 481     if (index >= 64)
 482     {
 483         SetLastError( ERROR_INVALID_PARAMETER );
 484         return FALSE;
 485     }
 486     NtCurrentTeb()->tls_array[index] = value;
 487     return TRUE;
 488 }
 489
 490
 491 /***********************************************************************
 492  * SetThreadContext [KERNEL32.670]  Sets context of thread.
 493  *
 494  * RETURNS
 495  *    Success: TRUE
 496  *    Failure: FALSE
 497  */
 498 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 499                               const CONTEXT *context ) /* [in] Address of context structure */
 500 {
 501     BOOL ret;
 502     SERVER_START_REQ
 503     {
 504         struct set_thread_context_request *req = server_alloc_req( sizeof(*req),
 505                                                                    sizeof(*context) );
 506         req->handle = handle;
 507         req->flags = context->ContextFlags;
 508         memcpy( server_data_ptr(req), context, sizeof(*context) );
 509         ret = !server_call( REQ_SET_THREAD_CONTEXT );
 510     }
 511     SERVER_END_REQ;
 512     return ret;
 513 }
 514
 515
 516 /***********************************************************************
 517  * GetThreadContext [KERNEL32.294]  Retrieves context of thread.
 518  *
 519  * RETURNS
 520  *    Success: TRUE
 521  *    Failure: FALSE
 522  */
 523 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 524                               CONTEXT *context ) /* [out] Address of context structure */
 525 {
 526     BOOL ret;
 527     SERVER_START_REQ
 528     {
 529         struct get_thread_context_request *req = server_alloc_req( sizeof(*req),
 530                                                                    sizeof(*context) );
 531         req->handle = handle;
 532         req->flags = context->ContextFlags;
 533         memcpy( server_data_ptr(req), context, sizeof(*context) );
 534         if ((ret = !server_call( REQ_GET_THREAD_CONTEXT )))
 535             memcpy( context, server_data_ptr(req), sizeof(*context) );
 536     }
 537     SERVER_END_REQ;
 538     return ret;
 539 }
 540
 541
 542 /**********************************************************************
 543  * GetThreadPriority [KERNEL32.296]  Returns priority for thread.
 544  *
 545  * RETURNS
 546  *    Success: Thread's priority level.
 547  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 548  */
 549 INT WINAPI GetThreadPriority(
 550     HANDLE hthread) /* [in] Handle to thread */
 551 {
 552     INT ret = THREAD_PRIORITY_ERROR_RETURN;
 553     SERVER_START_REQ
 554     {
 555         struct get_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
 556         req->handle = hthread;
 557         req->tid_in = 0;
 558         if (!server_call( REQ_GET_THREAD_INFO )) ret = req->priority;
 559     }
 560     SERVER_END_REQ;
 561     return ret;
 562 }
 563
 564
 565 /**********************************************************************
 566  * SetThreadPriority [KERNEL32.514]  Sets priority for thread.
 567  *
 568  * RETURNS
 569  *    Success: TRUE
 570  *    Failure: FALSE
 571  */
 572 BOOL WINAPI SetThreadPriority(
 573     HANDLE hthread, /* [in] Handle to thread */
 574     INT priority)   /* [in] Thread priority level */
 575 {
 576     BOOL ret;
 577     SERVER_START_REQ
 578     {
 579         struct set_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
 580         req->handle   = hthread;
 581         req->priority = priority;
 582         req->mask     = SET_THREAD_INFO_PRIORITY;
 583         ret = !server_call( REQ_SET_THREAD_INFO );
 584     }
 585     SERVER_END_REQ;
 586     return ret;
 587 }
 588
 589
 590 /**********************************************************************
 591  * GetThreadPriorityBoost [KERNEL32.877]  Returns priority boost for thread.
 592  *
 593  * Always reports that priority boost is disabled.
 594  *
 595  * RETURNS
 596  *    Success: TRUE.
 597  *    Failure: FALSE
 598  */
 599 BOOL WINAPI GetThreadPriorityBoost(
 600     HANDLE hthread, /* [in] Handle to thread */
 601     PBOOL pstate)   /* [out] pointer to var that receives the boost state */
 602 {
 603     if (pstate) *pstate = FALSE;
 604     return NO_ERROR;
 605 }
 606
 607
 608 /**********************************************************************
 609  * SetThreadPriorityBoost [KERNEL32.893]  Sets priority boost for thread.
 610  *
 611  * Priority boost is not implemented. Thsi function always returns
 612  * FALSE and sets last error to ERROR_CALL_NOT_IMPLEMENTED
 613  *
 614  * RETURNS
 615  *    Always returns FALSE to indicate a failure
 616  */
 617 BOOL WINAPI SetThreadPriorityBoost(
 618     HANDLE hthread, /* [in] Handle to thread */
 619     BOOL disable)   /* [in] TRUE to disable priority boost */
 620 {
 621     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 622     return FALSE;
 623 }
 624
 625
 626 /**********************************************************************
 627  *           SetThreadAffinityMask   (KERNEL32.669)
 628  */
 629 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 630 {
 631     DWORD ret;
 632     SERVER_START_REQ
 633     {
 634         struct set_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
 635         req->handle   = hThread;
 636         req->affinity = dwThreadAffinityMask;
 637         req->mask     = SET_THREAD_INFO_AFFINITY;
 638         ret = !server_call( REQ_SET_THREAD_INFO );
 639         /* FIXME: should return previous value */
 640     }
 641     SERVER_END_REQ;
 642     return ret;
 643 }
 644
 645
 646 /**********************************************************************
 647  * TerminateThread [KERNEL32.685]  Terminates a thread
 648  *
 649  * RETURNS
 650  *    Success: TRUE
 651  *    Failure: FALSE
 652  */
 653 BOOL WINAPI TerminateThread( HANDLE handle,    /* [in] Handle to thread */
 654                              DWORD exit_code)  /* [in] Exit code for thread */
 655 {
 656     NTSTATUS status = NtTerminateThread( handle, exit_code );
 657     if (status) SetLastError( RtlNtStatusToDosError(status) );
 658     return !status;
 659 }
 660
 661
 662 /**********************************************************************
 663  * GetExitCodeThread [KERNEL32.???]  Gets termination status of thread.
 664  *
 665  * RETURNS
 666  *    Success: TRUE
 667  *    Failure: FALSE
 668  */
 669 BOOL WINAPI GetExitCodeThread(
 670     HANDLE hthread, /* [in]  Handle to thread */
 671     LPDWORD exitcode) /* [out] Address to receive termination status */
 672 {
 673     BOOL ret;
 674     SERVER_START_REQ
 675     {
 676         struct get_thread_info_request *req = server_alloc_req( sizeof(*req), 0 );
 677         req->handle = hthread;
 678         req->tid_in = 0;
 679         ret = !server_call( REQ_GET_THREAD_INFO );
 680         if (ret && exitcode) *exitcode = req->exit_code;
 681     }
 682     SERVER_END_REQ;
 683     return ret;
 684 }
 685
 686
 687 /**********************************************************************
 688  * ResumeThread [KERNEL32.587]  Resumes a thread.
 689  *
 690  * Decrements a thread's suspend count.  When count is zero, the
 691  * execution of the thread is resumed.
 692  *
 693  * RETURNS
 694  *    Success: Previous suspend count
 695  *    Failure: 0xFFFFFFFF
 696  *    Already running: 0
 697  */
 698 DWORD WINAPI ResumeThread(
 699     HANDLE hthread) /* [in] Identifies thread to restart */
 700 {
 701     DWORD ret = 0xffffffff;
 702     SERVER_START_REQ
 703     {
 704         struct resume_thread_request *req = server_alloc_req( sizeof(*req), 0 );
 705         req->handle = hthread;
 706         if (!server_call( REQ_RESUME_THREAD )) ret = req->count;
 707     }
 708     SERVER_END_REQ;
 709     return ret;
 710 }
 711
 712
 713 /**********************************************************************
 714  * SuspendThread [KERNEL32.681]  Suspends a thread.
 715  *
 716  * RETURNS
 717  *    Success: Previous suspend count
 718  *    Failure: 0xFFFFFFFF
 719  */
 720 DWORD WINAPI SuspendThread(
 721     HANDLE hthread) /* [in] Handle to the thread */
 722 {
 723     DWORD ret = 0xffffffff;
 724     SERVER_START_REQ
 725     {
 726         struct suspend_thread_request *req = server_alloc_req( sizeof(*req), 0 );
 727         req->handle = hthread;
 728         if (!server_call( REQ_SUSPEND_THREAD )) ret = req->count;
 729     }
 730     SERVER_END_REQ;
 731     return ret;
 732 }
 733
 734
 735 /***********************************************************************
 736  *              QueueUserAPC  (KERNEL32.566)
 737  */
 738 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 739 {
 740     DWORD ret;
 741     SERVER_START_REQ
 742     {
 743         struct queue_apc_request *req = server_alloc_req( sizeof(*req), 0 );
 744         req->handle = hthread;
 745         req->func   = func;
 746         req->param  = (void *)data;
 747         ret = !server_call( REQ_QUEUE_APC );
 748     }
 749     SERVER_END_REQ;
 750     return ret;
 751 }
 752
 753
 754 /**********************************************************************
 755  * GetThreadTimes [KERNEL32.???]  Obtains timing information.
 756  *
 757  * NOTES
 758  *    What are the fields where these values are stored?
 759  *
 760  * RETURNS
 761  *    Success: TRUE
 762  *    Failure: FALSE
 763  */
 764 BOOL WINAPI GetThreadTimes(
 765     HANDLE thread,         /* [in]  Specifies the thread of interest */
 766     LPFILETIME creationtime, /* [out] When the thread was created */
 767     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 768     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 769     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 770 {
 771     FIXME("(0x%08x): stub\n",thread);
 772     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 773     return FALSE;
 774 }
 775
 776
 777 /**********************************************************************
 778  * VWin32_BoostThreadGroup [KERNEL.535]
 779  */
 780 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 781 {
 782     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 783 }
 784
 785 /**********************************************************************
 786  * VWin32_BoostThreadStatic [KERNEL.536]
 787  */
 788 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 789 {
 790     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 791 }
 792
 793
 794 /***********************************************************************
 795  *           GetThreadLocale    (KERNEL32.295)
 796  */
 797 LCID WINAPI GetThreadLocale(void)
 798 {
 799     LCID ret = NtCurrentTeb()->CurrentLocale;
 800     if (!ret) NtCurrentTeb()->CurrentLocale = ret = GetUserDefaultLCID();
 801     return ret;
 802 }
 803
 804
 805 /**********************************************************************
 806  * SetThreadLocale [KERNEL32.671]  Sets the calling threads current locale.
 807  *
 808  * RETURNS
 809  *    Success: TRUE
 810  *    Failure: FALSE
 811  *
 812  * FIXME
 813  *  check if lcid is a valid cp
 814  */
 815 BOOL WINAPI SetThreadLocale(
 816     LCID lcid)     /* [in] Locale identifier */
 817 {
 818     switch (lcid)
 819     {
 820       case LOCALE_SYSTEM_DEFAULT:
 821         lcid = GetSystemDefaultLCID();
 822         break;
 823       case LOCALE_USER_DEFAULT:
 824       case LOCALE_NEUTRAL:
 825         lcid = GetUserDefaultLCID();
 826         break;
 827     }
 828     NtCurrentTeb()->CurrentLocale = lcid;
 829     return TRUE;
 830 }
 831
 832
 833 /***********************************************************************
 834  * GetCurrentThread [KERNEL32.200]  Gets pseudohandle for current thread
 835  *
 836  * RETURNS
 837  *    Pseudohandle for the current thread
 838  */
 839 #undef GetCurrentThread
 840 HANDLE WINAPI GetCurrentThread(void)
 841 {
 842     return 0xfffffffe;
 843 }
 844
 845
 846 /***********************************************************************
 847  * ProcessIdToSessionId   (KERNEL32)
 848  * This function is available on Terminal Server 4SP4 and Windows 2000
 849  */
 850 BOOL WINAPI ProcessIdToSessionId( DWORD procid, DWORD *sessionid_ptr )
 851 {
 852         /* According to MSDN, if the calling process is not in a terminal
 853          * services environment, then the sessionid returned is zero.
 854          */
 855         *sessionid_ptr = 0;
 856         return TRUE;
 857 }
 858
 859
 860 #ifdef __i386__
 861
 862 /* void WINAPI SetLastError( DWORD error ); */
 863 __ASM_GLOBAL_FUNC( SetLastError,
 864                    "movl 4(%esp),%eax\n\t"
 865                    ".byte 0x64\n\t"
 866                    "movl %eax,0x60\n\t"
 867                    "ret $4" );
 868
 869 /* DWORD WINAPI GetLastError(void); */
 870 __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
 871
 872 /* DWORD WINAPI GetCurrentProcessId(void) */
 873 __ASM_GLOBAL_FUNC( GetCurrentProcessId, ".byte 0x64\n\tmovl 0x20,%eax\n\tret" );
 874
 875 /* DWORD WINAPI GetCurrentThreadId(void) */
 876 __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
 877
 878 #else  /* __i386__ */
 879
 880 /**********************************************************************
 881  * SetLastError [KERNEL.147] [KERNEL32.497]  Sets the last-error code.
 882  */
 883 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 884 {
 885     NtCurrentTeb()->last_error = error;
 886 }
 887
 888 /**********************************************************************
 889  * GetLastError [KERNEL.148] [KERNEL32.227]  Returns last-error code.
 890  */
 891 DWORD WINAPI GetLastError(void)
 892 {
 893     return NtCurrentTeb()->last_error;
 894 }
 895
 896 /***********************************************************************
 897  * GetCurrentProcessId [KERNEL32.199]  Returns process identifier.
 898  */
 899 DWORD WINAPI GetCurrentProcessId(void)
 900 {
 901     return (DWORD)NtCurrentTeb()->pid;
 902 }
 903
 904 /***********************************************************************
 905  * GetCurrentThreadId [KERNEL32.201]  Returns thread identifier.
 906  */
 907 DWORD WINAPI GetCurrentThreadId(void)
 908 {
 909     return (DWORD)NtCurrentTeb()->tid;
 910 }
 911
 912 #endif  /* __i386__ */