git.oblomov.eu Git - wine/blob - dlls/ntdll/thread.c

   1 /*
   2  * NT threads support
   3  *
   4  * Copyright 1996, 2003 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <stdarg.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_SYS_SYSCALL_H
  34 #include <sys/syscall.h>
  35 #endif
  36
  37 #define NONAMELESSUNION
  38 #include "ntstatus.h"
  39 #define WIN32_NO_STATUS
  40 #include "winternl.h"
  41 #include "wine/library.h"
  42 #include "wine/server.h"
  43 #include "wine/debug.h"
  44 #include "ntdll_misc.h"
  45 #include "ddk/wdm.h"
  46 #include "wine/exception.h"
  47
  48 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  49 WINE_DECLARE_DEBUG_CHANNEL(relay);
  50
  51 struct _KUSER_SHARED_DATA *user_shared_data = NULL;
  52
  53 PUNHANDLED_EXCEPTION_FILTER unhandled_exception_filter = NULL;
  54
  55 /* info passed to a starting thread */
  56 struct startup_info
  57 {
  58     TEB                            *teb;
  59     PRTL_THREAD_START_ROUTINE       entry_point;
  60     void                           *entry_arg;
  61 };
  62
  63 static PEB *peb;
  64 static PEB_LDR_DATA ldr;
  65 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
  66 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
  67 static RTL_BITMAP tls_bitmap;
  68 static RTL_BITMAP tls_expansion_bitmap;
  69 static RTL_BITMAP fls_bitmap;
  70 static LIST_ENTRY tls_links;
  71 static int nb_threads = 1;
  72
  73 /***********************************************************************
  74  *           get_unicode_string
  75  *
  76  * Copy a unicode string from the startup info.
  77  */
  78 static inline void get_unicode_string( UNICODE_STRING *str, WCHAR **src, WCHAR **dst, UINT len )
  79 {
  80     str->Buffer = *dst;
  81     str->Length = len;
  82     str->MaximumLength = len + sizeof(WCHAR);
  83     memcpy( str->Buffer, *src, len );
  84     str->Buffer[len / sizeof(WCHAR)] = 0;
  85     *src += len / sizeof(WCHAR);
  86     *dst += len / sizeof(WCHAR) + 1;
  87 }
  88
  89 /***********************************************************************
  90  *           init_user_process_params
  91  *
  92  * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
  93  */
  94 static NTSTATUS init_user_process_params( SIZE_T data_size, HANDLE *exe_file )
  95 {
  96     void *ptr;
  97     WCHAR *src, *dst;
  98     SIZE_T info_size, env_size, size, alloc_size;
  99     NTSTATUS status;
 100     startup_info_t *info;
 101     RTL_USER_PROCESS_PARAMETERS *params = NULL;
 102
 103     if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, data_size )))
 104         return STATUS_NO_MEMORY;
 105
 106     SERVER_START_REQ( get_startup_info )
 107     {
 108         wine_server_set_reply( req, info, data_size );
 109         if (!(status = wine_server_call( req )))
 110         {
 111             data_size = wine_server_reply_size( reply );
 112             info_size = reply->info_size;
 113             env_size  = data_size - info_size;
 114             *exe_file = wine_server_ptr_handle( reply->exe_file );
 115         }
 116     }
 117     SERVER_END_REQ;
 118     if (status != STATUS_SUCCESS) goto done;
 119
 120     size = sizeof(*params);
 121     size += MAX_NT_PATH_LENGTH * sizeof(WCHAR);
 122     size += info->dllpath_len + sizeof(WCHAR);
 123     size += info->imagepath_len + sizeof(WCHAR);
 124     size += info->cmdline_len + sizeof(WCHAR);
 125     size += info->title_len + sizeof(WCHAR);
 126     size += info->desktop_len + sizeof(WCHAR);
 127     size += info->shellinfo_len + sizeof(WCHAR);
 128     size += info->runtime_len + sizeof(WCHAR);
 129
 130     alloc_size = size;
 131     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &alloc_size,
 132                                       MEM_COMMIT, PAGE_READWRITE );
 133     if (status != STATUS_SUCCESS) goto done;
 134
 135     NtCurrentTeb()->Peb->ProcessParameters = params;
 136     params->AllocationSize  = alloc_size;
 137     params->Size            = size;
 138     params->Flags           = PROCESS_PARAMS_FLAG_NORMALIZED;
 139     params->DebugFlags      = info->debug_flags;
 140     params->ConsoleHandle   = wine_server_ptr_handle( info->console );
 141     params->ConsoleFlags    = info->console_flags;
 142     params->hStdInput       = wine_server_ptr_handle( info->hstdin );
 143     params->hStdOutput      = wine_server_ptr_handle( info->hstdout );
 144     params->hStdError       = wine_server_ptr_handle( info->hstderr );
 145     params->dwX             = info->x;
 146     params->dwY             = info->y;
 147     params->dwXSize         = info->xsize;
 148     params->dwYSize         = info->ysize;
 149     params->dwXCountChars   = info->xchars;
 150     params->dwYCountChars   = info->ychars;
 151     params->dwFillAttribute = info->attribute;
 152     params->dwFlags         = info->flags;
 153     params->wShowWindow     = info->show;
 154
 155     src = (WCHAR *)(info + 1);
 156     dst = (WCHAR *)(params + 1);
 157
 158     /* current directory needs more space */
 159     get_unicode_string( &params->CurrentDirectory.DosPath, &src, &dst, info->curdir_len );
 160     params->CurrentDirectory.DosPath.MaximumLength = MAX_NT_PATH_LENGTH * sizeof(WCHAR);
 161     dst = (WCHAR *)(params + 1) + MAX_NT_PATH_LENGTH;
 162
 163     get_unicode_string( &params->DllPath, &src, &dst, info->dllpath_len );
 164     get_unicode_string( &params->ImagePathName, &src, &dst, info->imagepath_len );
 165     get_unicode_string( &params->CommandLine, &src, &dst, info->cmdline_len );
 166     get_unicode_string( &params->WindowTitle, &src, &dst, info->title_len );
 167     get_unicode_string( &params->Desktop, &src, &dst, info->desktop_len );
 168     get_unicode_string( &params->ShellInfo, &src, &dst, info->shellinfo_len );
 169
 170     /* runtime info isn't a real string */
 171     params->RuntimeInfo.Buffer = dst;
 172     params->RuntimeInfo.Length = params->RuntimeInfo.MaximumLength = info->runtime_len;
 173     memcpy( dst, src, info->runtime_len );
 174
 175     /* environment needs to be a separate memory block */
 176     ptr = NULL;
 177     alloc_size = max( 1, env_size );
 178     status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &alloc_size,
 179                                       MEM_COMMIT, PAGE_READWRITE );
 180     if (status != STATUS_SUCCESS) goto done;
 181     memcpy( ptr, (char *)info + info_size, env_size );
 182     params->Environment = ptr;
 183
 184 done:
 185     RtlFreeHeap( GetProcessHeap(), 0, info );
 186     return status;
 187 }
 188
 189 /***********************************************************************
 190  *           thread_init
 191  *
 192  * Setup the initial thread.
 193  *
 194  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 195  */
 196 HANDLE thread_init(void)
 197 {
 198     TEB *teb;
 199     void *addr;
 200     SIZE_T size, info_size;
 201     HANDLE exe_file = 0;
 202     LARGE_INTEGER now;
 203     struct ntdll_thread_data *thread_data;
 204     static struct debug_info debug_info;  /* debug info for initial thread */
 205
 206     virtual_init();
 207
 208     /* reserve space for shared user data */
 209
 210     addr = (void *)0x7ffe0000;
 211     size = 0x10000;
 212     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
 213     user_shared_data = addr;
 214
 215     /* allocate and initialize the PEB */
 216
 217     addr = NULL;
 218     size = sizeof(*peb);
 219     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 1, &size,
 220                              MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 221     peb = addr;
 222
 223     peb->ProcessParameters  = &params;
 224     peb->TlsBitmap          = &tls_bitmap;
 225     peb->TlsExpansionBitmap = &tls_expansion_bitmap;
 226     peb->FlsBitmap          = &fls_bitmap;
 227     peb->LdrData            = &ldr;
 228     params.CurrentDirectory.DosPath.Buffer = current_dir;
 229     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 230     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 231     ldr.Length = sizeof(ldr);
 232     RtlInitializeBitMap( &tls_bitmap, peb->TlsBitmapBits, sizeof(peb->TlsBitmapBits) * 8 );
 233     RtlInitializeBitMap( &tls_expansion_bitmap, peb->TlsExpansionBitmapBits,
 234                          sizeof(peb->TlsExpansionBitmapBits) * 8 );
 235     RtlInitializeBitMap( &fls_bitmap, peb->FlsBitmapBits, sizeof(peb->FlsBitmapBits) * 8 );
 236     InitializeListHead( &peb->FlsListHead );
 237     InitializeListHead( &ldr.InLoadOrderModuleList );
 238     InitializeListHead( &ldr.InMemoryOrderModuleList );
 239     InitializeListHead( &ldr.InInitializationOrderModuleList );
 240     InitializeListHead( &tls_links );
 241
 242     /* allocate and initialize the initial TEB */
 243
 244     signal_alloc_thread( &teb );
 245     teb->Peb = peb;
 246     teb->Tib.StackBase = (void *)~0UL;
 247     teb->StaticUnicodeString.Buffer = teb->StaticUnicodeBuffer;
 248     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 249
 250     thread_data = (struct ntdll_thread_data *)teb->SpareBytes1;
 251     thread_data->request_fd = -1;
 252     thread_data->reply_fd   = -1;
 253     thread_data->wait_fd[0] = -1;
 254     thread_data->wait_fd[1] = -1;
 255     thread_data->debug_info = &debug_info;
 256     InsertHeadList( &tls_links, &teb->TlsLinks );
 257
 258     signal_init_thread( teb );
 259     virtual_init_threading();
 260
 261     debug_info.str_pos = debug_info.strings;
 262     debug_info.out_pos = debug_info.output;
 263     debug_init();
 264
 265     /* setup the server connection */
 266     server_init_process();
 267     info_size = server_init_thread( peb );
 268
 269     /* create the process heap */
 270     if (!(peb->ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 271     {
 272         MESSAGE( "wine: failed to create the process heap\n" );
 273         exit(1);
 274     }
 275
 276     /* allocate user parameters */
 277     if (info_size)
 278     {
 279         init_user_process_params( info_size, &exe_file );
 280     }
 281     else
 282     {
 283         if (isatty(0) || isatty(1) || isatty(2))
 284             params.ConsoleHandle = (HANDLE)2; /* see kernel32/kernel_private.h */
 285         if (!isatty(0))
 286             wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 287         if (!isatty(1))
 288             wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 289         if (!isatty(2))
 290             wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 291     }
 292
 293     /* initialize time values in user_shared_data */
 294     NtQuerySystemTime( &now );
 295     user_shared_data->SystemTime.LowPart = now.u.LowPart;
 296     user_shared_data->SystemTime.High1Time = user_shared_data->SystemTime.High2Time = now.u.HighPart;
 297     user_shared_data->u.TickCountQuad = (now.QuadPart - server_start_time) / 10000;
 298     user_shared_data->u.TickCount.High2Time = user_shared_data->u.TickCount.High1Time;
 299     user_shared_data->TickCountLowDeprecated = user_shared_data->u.TickCount.LowPart;
 300     user_shared_data->TickCountMultiplier = 1 << 24;
 301
 302     fill_cpu_info();
 303
 304     return exe_file;
 305 }
 306
 307
 308 /***********************************************************************
 309  *           terminate_thread
 310  */
 311 void terminate_thread( int status )
 312 {
 313     pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
 314     if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) _exit( status );
 315
 316     close( ntdll_get_thread_data()->wait_fd[0] );
 317     close( ntdll_get_thread_data()->wait_fd[1] );
 318     close( ntdll_get_thread_data()->reply_fd );
 319     close( ntdll_get_thread_data()->request_fd );
 320     pthread_exit( UIntToPtr(status) );
 321 }
 322
 323
 324 /***********************************************************************
 325  *           exit_thread
 326  */
 327 void exit_thread( int status )
 328 {
 329     static void *prev_teb;
 330     TEB *teb;
 331
 332     if (status)  /* send the exit code to the server (0 is already the default) */
 333     {
 334         SERVER_START_REQ( terminate_thread )
 335         {
 336             req->handle    = wine_server_obj_handle( GetCurrentThread() );
 337             req->exit_code = status;
 338             wine_server_call( req );
 339         }
 340         SERVER_END_REQ;
 341     }
 342
 343     if (interlocked_xchg_add( &nb_threads, -1 ) <= 1)
 344     {
 345         LdrShutdownProcess();
 346         exit( status );
 347     }
 348
 349     LdrShutdownThread();
 350     RtlAcquirePebLock();
 351     RemoveEntryList( &NtCurrentTeb()->TlsLinks );
 352     RtlReleasePebLock();
 353     RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->FlsSlots );
 354     RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->TlsExpansionSlots );
 355
 356     pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
 357
 358     if ((teb = interlocked_xchg_ptr( &prev_teb, NtCurrentTeb() )))
 359     {
 360         struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SpareBytes1;
 361
 362         if (thread_data->pthread_id)
 363         {
 364             pthread_join( thread_data->pthread_id, NULL );
 365             signal_free_thread( teb );
 366         }
 367     }
 368
 369     close( ntdll_get_thread_data()->wait_fd[0] );
 370     close( ntdll_get_thread_data()->wait_fd[1] );
 371     close( ntdll_get_thread_data()->reply_fd );
 372     close( ntdll_get_thread_data()->request_fd );
 373     pthread_exit( UIntToPtr(status) );
 374 }
 375
 376
 377 /***********************************************************************
 378  *           start_thread
 379  *
 380  * Startup routine for a newly created thread.
 381  */
 382 static void start_thread( struct startup_info *info )
 383 {
 384     TEB *teb = info->teb;
 385     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SpareBytes1;
 386     PRTL_THREAD_START_ROUTINE func = info->entry_point;
 387     void *arg = info->entry_arg;
 388     struct debug_info debug_info;
 389
 390     debug_info.str_pos = debug_info.strings;
 391     debug_info.out_pos = debug_info.output;
 392     thread_data->debug_info = &debug_info;
 393     thread_data->pthread_id = pthread_self();
 394
 395     signal_init_thread( teb );
 396     server_init_thread( func );
 397     pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
 398
 399     RtlAcquirePebLock();
 400     InsertHeadList( &tls_links, &teb->TlsLinks );
 401     RtlReleasePebLock();
 402
 403     MODULE_DllThreadAttach( NULL );
 404
 405     if (TRACE_ON(relay))
 406         DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), func, arg );
 407
 408     call_thread_entry_point( (LPTHREAD_START_ROUTINE)func, arg );
 409 }
 410
 411
 412 /***********************************************************************
 413  *              RtlCreateUserThread   (NTDLL.@)
 414  */
 415 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 416                                      BOOLEAN suspended, PVOID stack_addr,
 417                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 418                                      PRTL_THREAD_START_ROUTINE start, void *param,
 419                                      HANDLE *handle_ptr, CLIENT_ID *id )
 420 {
 421     sigset_t sigset;
 422     pthread_t pthread_id;
 423     pthread_attr_t attr;
 424     struct ntdll_thread_data *thread_data;
 425     struct startup_info *info = NULL;
 426     HANDLE handle = 0;
 427     TEB *teb = NULL;
 428     DWORD tid = 0;
 429     int request_pipe[2];
 430     NTSTATUS status;
 431
 432     if (process != NtCurrentProcess())
 433     {
 434         apc_call_t call;
 435         apc_result_t result;
 436
 437         memset( &call, 0, sizeof(call) );
 438
 439         call.create_thread.type    = APC_CREATE_THREAD;
 440         call.create_thread.func    = wine_server_client_ptr( start );
 441         call.create_thread.arg     = wine_server_client_ptr( param );
 442         call.create_thread.reserve = stack_reserve;
 443         call.create_thread.commit  = stack_commit;
 444         call.create_thread.suspend = suspended;
 445         status = NTDLL_queue_process_apc( process, &call, &result );
 446         if (status != STATUS_SUCCESS) return status;
 447
 448         if (result.create_thread.status == STATUS_SUCCESS)
 449         {
 450             if (id) id->UniqueThread = ULongToHandle(result.create_thread.tid);
 451             if (handle_ptr) *handle_ptr = wine_server_ptr_handle( result.create_thread.handle );
 452             else NtClose( wine_server_ptr_handle( result.create_thread.handle ));
 453         }
 454         return result.create_thread.status;
 455     }
 456
 457     if (server_pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 458     wine_server_send_fd( request_pipe[0] );
 459
 460     SERVER_START_REQ( new_thread )
 461     {
 462         req->access     = THREAD_ALL_ACCESS;
 463         req->attributes = 0;  /* FIXME */
 464         req->suspend    = suspended;
 465         req->request_fd = request_pipe[0];
 466         if (!(status = wine_server_call( req )))
 467         {
 468             handle = wine_server_ptr_handle( reply->handle );
 469             tid = reply->tid;
 470         }
 471         close( request_pipe[0] );
 472     }
 473     SERVER_END_REQ;
 474
 475     if (status)
 476     {
 477         close( request_pipe[1] );
 478         return status;
 479     }
 480
 481     pthread_sigmask( SIG_BLOCK, &server_block_set, &sigset );
 482
 483     if ((status = signal_alloc_thread( &teb ))) goto error;
 484
 485     teb->Peb = NtCurrentTeb()->Peb;
 486     teb->ClientId.UniqueProcess = ULongToHandle(GetCurrentProcessId());
 487     teb->ClientId.UniqueThread  = ULongToHandle(tid);
 488     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
 489     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 490
 491     info = (struct startup_info *)(teb + 1);
 492     info->teb         = teb;
 493     info->entry_point = start;
 494     info->entry_arg   = param;
 495
 496     thread_data = (struct ntdll_thread_data *)teb->SpareBytes1;
 497     thread_data->request_fd  = request_pipe[1];
 498     thread_data->reply_fd    = -1;
 499     thread_data->wait_fd[0]  = -1;
 500     thread_data->wait_fd[1]  = -1;
 501
 502     if ((status = virtual_alloc_thread_stack( teb, stack_reserve, stack_commit ))) goto error;
 503
 504     pthread_attr_init( &attr );
 505     pthread_attr_setstack( &attr, teb->DeallocationStack,
 506                            (char *)teb->Tib.StackBase - (char *)teb->DeallocationStack );
 507     pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); /* force creating a kernel thread */
 508     interlocked_xchg_add( &nb_threads, 1 );
 509     if (pthread_create( &pthread_id, &attr, (void * (*)(void *))start_thread, info ))
 510     {
 511         interlocked_xchg_add( &nb_threads, -1 );
 512         pthread_attr_destroy( &attr );
 513         status = STATUS_NO_MEMORY;
 514         goto error;
 515     }
 516     pthread_attr_destroy( &attr );
 517     pthread_sigmask( SIG_SETMASK, &sigset, NULL );
 518
 519     if (id) id->UniqueThread = ULongToHandle(tid);
 520     if (handle_ptr) *handle_ptr = handle;
 521     else NtClose( handle );
 522
 523     return STATUS_SUCCESS;
 524
 525 error:
 526     if (teb) signal_free_thread( teb );
 527     if (handle) NtClose( handle );
 528     pthread_sigmask( SIG_SETMASK, &sigset, NULL );
 529     close( request_pipe[1] );
 530     return status;
 531 }
 532
 533
 534 /******************************************************************************
 535  *              RtlGetNtGlobalFlags   (NTDLL.@)
 536  */
 537 ULONG WINAPI RtlGetNtGlobalFlags(void)
 538 {
 539     if (!peb) return 0;  /* init not done yet */
 540     return peb->NtGlobalFlag;
 541 }
 542
 543
 544 /***********************************************************************
 545  *              NtOpenThread   (NTDLL.@)
 546  *              ZwOpenThread   (NTDLL.@)
 547  */
 548 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 549                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 550 {
 551     NTSTATUS ret;
 552
 553     SERVER_START_REQ( open_thread )
 554     {
 555         req->tid        = HandleToULong(id->UniqueThread);
 556         req->access     = access;
 557         req->attributes = attr ? attr->Attributes : 0;
 558         ret = wine_server_call( req );
 559         *handle = wine_server_ptr_handle( reply->handle );
 560     }
 561     SERVER_END_REQ;
 562     return ret;
 563 }
 564
 565
 566 /******************************************************************************
 567  *              NtSuspendThread   (NTDLL.@)
 568  *              ZwSuspendThread   (NTDLL.@)
 569  */
 570 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 571 {
 572     NTSTATUS ret;
 573
 574     SERVER_START_REQ( suspend_thread )
 575     {
 576         req->handle = wine_server_obj_handle( handle );
 577         if (!(ret = wine_server_call( req ))) *count = reply->count;
 578     }
 579     SERVER_END_REQ;
 580     return ret;
 581 }
 582
 583
 584 /******************************************************************************
 585  *              NtResumeThread   (NTDLL.@)
 586  *              ZwResumeThread   (NTDLL.@)
 587  */
 588 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 589 {
 590     NTSTATUS ret;
 591
 592     SERVER_START_REQ( resume_thread )
 593     {
 594         req->handle = wine_server_obj_handle( handle );
 595         if (!(ret = wine_server_call( req ))) *count = reply->count;
 596     }
 597     SERVER_END_REQ;
 598     return ret;
 599 }
 600
 601
 602 /******************************************************************************
 603  *              NtAlertResumeThread   (NTDLL.@)
 604  *              ZwAlertResumeThread   (NTDLL.@)
 605  */
 606 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 607 {
 608     FIXME( "stub: should alert thread %p\n", handle );
 609     return NtResumeThread( handle, count );
 610 }
 611
 612
 613 /******************************************************************************
 614  *              NtAlertThread   (NTDLL.@)
 615  *              ZwAlertThread   (NTDLL.@)
 616  */
 617 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 618 {
 619     FIXME( "stub: %p\n", handle );
 620     return STATUS_NOT_IMPLEMENTED;
 621 }
 622
 623
 624 /******************************************************************************
 625  *              NtTerminateThread  (NTDLL.@)
 626  *              ZwTerminateThread  (NTDLL.@)
 627  */
 628 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 629 {
 630     NTSTATUS ret;
 631     BOOL self;
 632
 633     SERVER_START_REQ( terminate_thread )
 634     {
 635         req->handle    = wine_server_obj_handle( handle );
 636         req->exit_code = exit_code;
 637         ret = wine_server_call( req );
 638         self = !ret && reply->self;
 639     }
 640     SERVER_END_REQ;
 641
 642     if (self) abort_thread( exit_code );
 643     return ret;
 644 }
 645
 646
 647 /******************************************************************************
 648  *              NtQueueApcThread  (NTDLL.@)
 649  */
 650 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 651                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 652 {
 653     NTSTATUS ret;
 654     SERVER_START_REQ( queue_apc )
 655     {
 656         req->handle = wine_server_obj_handle( handle );
 657         if (func)
 658         {
 659             req->call.type         = APC_USER;
 660             req->call.user.func    = wine_server_client_ptr( func );
 661             req->call.user.args[0] = arg1;
 662             req->call.user.args[1] = arg2;
 663             req->call.user.args[2] = arg3;
 664         }
 665         else req->call.type = APC_NONE;  /* wake up only */
 666         ret = wine_server_call( req );
 667     }
 668     SERVER_END_REQ;
 669     return ret;
 670 }
 671
 672
 673 /***********************************************************************
 674  *              NtSetContextThread  (NTDLL.@)
 675  *              ZwSetContextThread  (NTDLL.@)
 676  */
 677 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 678 {
 679     NTSTATUS ret;
 680     DWORD dummy, i;
 681     BOOL self = FALSE;
 682
 683 #ifdef __i386__
 684     /* on i386 debug registers always require a server call */
 685     self = (handle == GetCurrentThread());
 686     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 687     {
 688         self = (ntdll_get_thread_data()->dr0 == context->Dr0 &&
 689                 ntdll_get_thread_data()->dr1 == context->Dr1 &&
 690                 ntdll_get_thread_data()->dr2 == context->Dr2 &&
 691                 ntdll_get_thread_data()->dr3 == context->Dr3 &&
 692                 ntdll_get_thread_data()->dr6 == context->Dr6 &&
 693                 ntdll_get_thread_data()->dr7 == context->Dr7);
 694     }
 695 #endif
 696
 697     if (!self)
 698     {
 699         context_t server_context;
 700
 701         context_to_server( &server_context, context );
 702
 703         SERVER_START_REQ( set_thread_context )
 704         {
 705             req->handle  = wine_server_obj_handle( handle );
 706             req->suspend = 1;
 707             wine_server_add_data( req, &server_context, sizeof(server_context) );
 708             ret = wine_server_call( req );
 709             self = reply->self;
 710         }
 711         SERVER_END_REQ;
 712
 713         if (ret == STATUS_PENDING)
 714         {
 715             for (i = 0; i < 100; i++)
 716             {
 717                 SERVER_START_REQ( set_thread_context )
 718                 {
 719                     req->handle  = wine_server_obj_handle( handle );
 720                     req->suspend = 0;
 721                     wine_server_add_data( req, &server_context, sizeof(server_context) );
 722                     ret = wine_server_call( req );
 723                 }
 724                 SERVER_END_REQ;
 725                 if (ret == STATUS_PENDING)
 726                 {
 727                     LARGE_INTEGER timeout;
 728                     timeout.QuadPart = -10000;
 729                     NtDelayExecution( FALSE, &timeout );
 730                 }
 731                 else break;
 732             }
 733             NtResumeThread( handle, &dummy );
 734             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 735         }
 736
 737         if (ret) return ret;
 738     }
 739
 740     if (self) set_cpu_context( context );
 741     return STATUS_SUCCESS;
 742 }
 743
 744
 745 /* convert CPU-specific flags to generic server flags */
 746 static inline unsigned int get_server_context_flags( DWORD flags )
 747 {
 748     unsigned int ret = 0;
 749
 750     flags &= 0x3f;  /* mask CPU id flags */
 751     if (flags & CONTEXT_CONTROL) ret |= SERVER_CTX_CONTROL;
 752     if (flags & CONTEXT_INTEGER) ret |= SERVER_CTX_INTEGER;
 753 #ifdef CONTEXT_SEGMENTS
 754     if (flags & CONTEXT_SEGMENTS) ret |= SERVER_CTX_SEGMENTS;
 755 #endif
 756 #ifdef CONTEXT_FLOATING_POINT
 757     if (flags & CONTEXT_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT;
 758 #endif
 759 #ifdef CONTEXT_DEBUG_REGISTERS
 760     if (flags & CONTEXT_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS;
 761 #endif
 762 #ifdef CONTEXT_EXTENDED_REGISTERS
 763     if (flags & CONTEXT_EXTENDED_REGISTERS) ret |= SERVER_CTX_EXTENDED_REGISTERS;
 764 #endif
 765     return ret;
 766 }
 767
 768 /***********************************************************************
 769  *              NtGetContextThread  (NTDLL.@)
 770  *              ZwGetContextThread  (NTDLL.@)
 771  */
 772 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
 773 {
 774     NTSTATUS ret;
 775     DWORD dummy, i;
 776     DWORD needed_flags = context->ContextFlags;
 777     BOOL self = (handle == GetCurrentThread());
 778
 779 #ifdef __i386__
 780     /* on i386 debug registers always require a server call */
 781     if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
 782 #endif
 783
 784     if (!self)
 785     {
 786         unsigned int server_flags = get_server_context_flags( context->ContextFlags );
 787         context_t server_context;
 788
 789         SERVER_START_REQ( get_thread_context )
 790         {
 791             req->handle  = wine_server_obj_handle( handle );
 792             req->flags   = server_flags;
 793             req->suspend = 1;
 794             wine_server_set_reply( req, &server_context, sizeof(server_context) );
 795             ret = wine_server_call( req );
 796             self = reply->self;
 797         }
 798         SERVER_END_REQ;
 799
 800         if (ret == STATUS_PENDING)
 801         {
 802             for (i = 0; i < 100; i++)
 803             {
 804                 SERVER_START_REQ( get_thread_context )
 805                 {
 806                     req->handle  = wine_server_obj_handle( handle );
 807                     req->flags   = server_flags;
 808                     req->suspend = 0;
 809                     wine_server_set_reply( req, &server_context, sizeof(server_context) );
 810                     ret = wine_server_call( req );
 811                 }
 812                 SERVER_END_REQ;
 813                 if (ret == STATUS_PENDING)
 814                 {
 815                     LARGE_INTEGER timeout;
 816                     timeout.QuadPart = -10000;
 817                     NtDelayExecution( FALSE, &timeout );
 818                 }
 819                 else break;
 820             }
 821             NtResumeThread( handle, &dummy );
 822             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 823         }
 824         if (!ret) ret = context_from_server( context, &server_context );
 825         if (ret) return ret;
 826         needed_flags &= ~context->ContextFlags;
 827     }
 828
 829     if (self)
 830     {
 831         if (needed_flags)
 832         {
 833             CONTEXT ctx;
 834             RtlCaptureContext( &ctx );
 835             copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
 836             context->ContextFlags |= ctx.ContextFlags & needed_flags;
 837         }
 838 #ifdef __i386__
 839         /* update the cached version of the debug registers */
 840         if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
 841         {
 842             ntdll_get_thread_data()->dr0 = context->Dr0;
 843             ntdll_get_thread_data()->dr1 = context->Dr1;
 844             ntdll_get_thread_data()->dr2 = context->Dr2;
 845             ntdll_get_thread_data()->dr3 = context->Dr3;
 846             ntdll_get_thread_data()->dr6 = context->Dr6;
 847             ntdll_get_thread_data()->dr7 = context->Dr7;
 848         }
 849 #endif
 850     }
 851     return STATUS_SUCCESS;
 852 }
 853
 854
 855 /******************************************************************************
 856  *              NtQueryInformationThread  (NTDLL.@)
 857  *              ZwQueryInformationThread  (NTDLL.@)
 858  */
 859 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
 860                                           void *data, ULONG length, ULONG *ret_len )
 861 {
 862     NTSTATUS status;
 863
 864     switch(class)
 865     {
 866     case ThreadBasicInformation:
 867         {
 868             THREAD_BASIC_INFORMATION info;
 869             const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
 870
 871             SERVER_START_REQ( get_thread_info )
 872             {
 873                 req->handle = wine_server_obj_handle( handle );
 874                 req->tid_in = 0;
 875                 if (!(status = wine_server_call( req )))
 876                 {
 877                     info.ExitStatus             = reply->exit_code;
 878                     info.TebBaseAddress         = wine_server_get_ptr( reply->teb );
 879                     info.ClientId.UniqueProcess = ULongToHandle(reply->pid);
 880                     info.ClientId.UniqueThread  = ULongToHandle(reply->tid);
 881                     info.AffinityMask           = reply->affinity & affinity_mask;
 882                     info.Priority               = reply->priority;
 883                     info.BasePriority           = reply->priority;  /* FIXME */
 884                 }
 885             }
 886             SERVER_END_REQ;
 887             if (status == STATUS_SUCCESS)
 888             {
 889                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
 890                 if (ret_len) *ret_len = min( length, sizeof(info) );
 891             }
 892         }
 893         return status;
 894     case ThreadAffinityMask:
 895         {
 896             const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
 897             ULONG_PTR affinity = 0;
 898
 899             SERVER_START_REQ( get_thread_info )
 900             {
 901                 req->handle = wine_server_obj_handle( handle );
 902                 req->tid_in = 0;
 903                 if (!(status = wine_server_call( req )))
 904                     affinity = reply->affinity & affinity_mask;
 905             }
 906             SERVER_END_REQ;
 907             if (status == STATUS_SUCCESS)
 908             {
 909                 if (data) memcpy( data, &affinity, min( length, sizeof(affinity) ));
 910                 if (ret_len) *ret_len = min( length, sizeof(affinity) );
 911             }
 912         }
 913         return status;
 914     case ThreadTimes:
 915         {
 916             KERNEL_USER_TIMES   kusrt;
 917             /* We need to do a server call to get the creation time or exit time */
 918             /* This works on any thread */
 919             SERVER_START_REQ( get_thread_info )
 920             {
 921                 req->handle = wine_server_obj_handle( handle );
 922                 req->tid_in = 0;
 923                 status = wine_server_call( req );
 924                 if (status == STATUS_SUCCESS)
 925                 {
 926                     kusrt.CreateTime.QuadPart = reply->creation_time;
 927                     kusrt.ExitTime.QuadPart = reply->exit_time;
 928                 }
 929             }
 930             SERVER_END_REQ;
 931             if (status == STATUS_SUCCESS)
 932             {
 933                 /* We call times(2) for kernel time or user time */
 934                 /* We can only (portably) do this for the current thread */
 935                 if (handle == GetCurrentThread())
 936                 {
 937                     struct tms time_buf;
 938                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
 939
 940                     times(&time_buf);
 941                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 942                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 943                 }
 944                 else
 945                 {
 946                     static BOOL reported = FALSE;
 947
 948                     kusrt.KernelTime.QuadPart = 0;
 949                     kusrt.UserTime.QuadPart = 0;
 950                     if (reported)
 951                         TRACE("Cannot get kerneltime or usertime of other threads\n");
 952                     else
 953                     {
 954                         FIXME("Cannot get kerneltime or usertime of other threads\n");
 955                         reported = TRUE;
 956                     }
 957                 }
 958                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
 959                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
 960             }
 961         }
 962         return status;
 963     case ThreadDescriptorTableEntry:
 964         {
 965 #ifdef __i386__
 966             THREAD_DESCRIPTOR_INFORMATION*      tdi = data;
 967             if (length < sizeof(*tdi))
 968                 status = STATUS_INFO_LENGTH_MISMATCH;
 969             else if (!(tdi->Selector & 4))  /* GDT selector */
 970             {
 971                 unsigned sel = tdi->Selector & ~3;  /* ignore RPL */
 972                 status = STATUS_SUCCESS;
 973                 if (!sel)  /* null selector */
 974                     memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
 975                 else
 976                 {
 977                     tdi->Entry.BaseLow                   = 0;
 978                     tdi->Entry.HighWord.Bits.BaseMid     = 0;
 979                     tdi->Entry.HighWord.Bits.BaseHi      = 0;
 980                     tdi->Entry.LimitLow                  = 0xffff;
 981                     tdi->Entry.HighWord.Bits.LimitHi     = 0xf;
 982                     tdi->Entry.HighWord.Bits.Dpl         = 3;
 983                     tdi->Entry.HighWord.Bits.Sys         = 0;
 984                     tdi->Entry.HighWord.Bits.Pres        = 1;
 985                     tdi->Entry.HighWord.Bits.Granularity = 1;
 986                     tdi->Entry.HighWord.Bits.Default_Big = 1;
 987                     tdi->Entry.HighWord.Bits.Type        = 0x12;
 988                     /* it has to be one of the system GDT selectors */
 989                     if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
 990                     {
 991                         if (sel == (wine_get_cs() & ~3))
 992                             tdi->Entry.HighWord.Bits.Type |= 8;  /* code segment */
 993                         else status = STATUS_ACCESS_DENIED;
 994                     }
 995                 }
 996             }
 997             else
 998             {
 999                 SERVER_START_REQ( get_selector_entry )
1000                 {
1001                     req->handle = wine_server_obj_handle( handle );
1002                     req->entry = tdi->Selector >> 3;
1003                     status = wine_server_call( req );
1004                     if (!status)
1005                     {
1006                         if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1007                             status = STATUS_ACCESS_VIOLATION;
1008                         else
1009                         {
1010                             wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1011                             wine_ldt_set_limit( &tdi->Entry, reply->limit );
1012                             wine_ldt_set_flags( &tdi->Entry, reply->flags );
1013                         }
1014                     }
1015                 }
1016                 SERVER_END_REQ;
1017             }
1018             if (status == STATUS_SUCCESS && ret_len)
1019                 /* yes, that's a bit strange, but it's the way it is */
1020                 *ret_len = sizeof(LDT_ENTRY);
1021 #else
1022             status = STATUS_NOT_IMPLEMENTED;
1023 #endif
1024             return status;
1025         }
1026     case ThreadAmILastThread:
1027         {
1028             SERVER_START_REQ(get_thread_info)
1029             {
1030                 req->handle = wine_server_obj_handle( handle );
1031                 req->tid_in = 0;
1032                 status = wine_server_call( req );
1033                 if (status == STATUS_SUCCESS)
1034                 {
1035                     BOOLEAN last = reply->last;
1036                     if (data) memcpy( data, &last, min( length, sizeof(last) ));
1037                     if (ret_len) *ret_len = min( length, sizeof(last) );
1038                 }
1039             }
1040             SERVER_END_REQ;
1041             return status;
1042         }
1043     case ThreadPriority:
1044     case ThreadBasePriority:
1045     case ThreadImpersonationToken:
1046     case ThreadEnableAlignmentFaultFixup:
1047     case ThreadEventPair_Reusable:
1048     case ThreadQuerySetWin32StartAddress:
1049     case ThreadZeroTlsCell:
1050     case ThreadPerformanceCount:
1051     case ThreadIdealProcessor:
1052     case ThreadPriorityBoost:
1053     case ThreadSetTlsArrayAddress:
1054     case ThreadIsIoPending:
1055     default:
1056         FIXME( "info class %d not supported yet\n", class );
1057         return STATUS_NOT_IMPLEMENTED;
1058     }
1059 }
1060
1061
1062 /******************************************************************************
1063  *              NtSetInformationThread  (NTDLL.@)
1064  *              ZwSetInformationThread  (NTDLL.@)
1065  */
1066 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1067                                         LPCVOID data, ULONG length )
1068 {
1069     NTSTATUS status;
1070     switch(class)
1071     {
1072     case ThreadZeroTlsCell:
1073         if (handle == GetCurrentThread())
1074         {
1075             LIST_ENTRY *entry;
1076             DWORD index;
1077
1078             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1079             index = *(const DWORD *)data;
1080             if (index < TLS_MINIMUM_AVAILABLE)
1081             {
1082                 RtlAcquirePebLock();
1083                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1084                 {
1085                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1086                     teb->TlsSlots[index] = 0;
1087                 }
1088                 RtlReleasePebLock();
1089             }
1090             else
1091             {
1092                 index -= TLS_MINIMUM_AVAILABLE;
1093                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1094                     return STATUS_INVALID_PARAMETER;
1095                 RtlAcquirePebLock();
1096                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1097                 {
1098                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1099                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1100                 }
1101                 RtlReleasePebLock();
1102             }
1103             return STATUS_SUCCESS;
1104         }
1105         FIXME( "ZeroTlsCell not supported on other threads\n" );
1106         return STATUS_NOT_IMPLEMENTED;
1107
1108     case ThreadImpersonationToken:
1109         {
1110             const HANDLE *phToken = data;
1111             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1112             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1113             SERVER_START_REQ( set_thread_info )
1114             {
1115                 req->handle   = wine_server_obj_handle( handle );
1116                 req->token    = wine_server_obj_handle( *phToken );
1117                 req->mask     = SET_THREAD_INFO_TOKEN;
1118                 status = wine_server_call( req );
1119             }
1120             SERVER_END_REQ;
1121         }
1122         return status;
1123     case ThreadBasePriority:
1124         {
1125             const DWORD *pprio = data;
1126             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1127             SERVER_START_REQ( set_thread_info )
1128             {
1129                 req->handle   = wine_server_obj_handle( handle );
1130                 req->priority = *pprio;
1131                 req->mask     = SET_THREAD_INFO_PRIORITY;
1132                 status = wine_server_call( req );
1133             }
1134             SERVER_END_REQ;
1135         }
1136         return status;
1137     case ThreadAffinityMask:
1138         {
1139             const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1140             ULONG_PTR req_aff;
1141
1142             if (length != sizeof(ULONG_PTR)) return STATUS_INVALID_PARAMETER;
1143             req_aff = *(const ULONG_PTR *)data;
1144             if ((ULONG)req_aff == ~0u) req_aff = affinity_mask;
1145             else if (req_aff & ~affinity_mask) return STATUS_INVALID_PARAMETER;
1146             else if (!req_aff) return STATUS_INVALID_PARAMETER;
1147             SERVER_START_REQ( set_thread_info )
1148             {
1149                 req->handle   = wine_server_obj_handle( handle );
1150                 req->affinity = req_aff;
1151                 req->mask     = SET_THREAD_INFO_AFFINITY;
1152                 status = wine_server_call( req );
1153             }
1154             SERVER_END_REQ;
1155         }
1156         return status;
1157     case ThreadHideFromDebugger:
1158         /* pretend the call succeeded to satisfy some code protectors */
1159         return STATUS_SUCCESS;
1160
1161     case ThreadBasicInformation:
1162     case ThreadTimes:
1163     case ThreadPriority:
1164     case ThreadDescriptorTableEntry:
1165     case ThreadEnableAlignmentFaultFixup:
1166     case ThreadEventPair_Reusable:
1167     case ThreadQuerySetWin32StartAddress:
1168     case ThreadPerformanceCount:
1169     case ThreadAmILastThread:
1170     case ThreadIdealProcessor:
1171     case ThreadPriorityBoost:
1172     case ThreadSetTlsArrayAddress:
1173     case ThreadIsIoPending:
1174     default:
1175         FIXME( "info class %d not supported yet\n", class );
1176         return STATUS_NOT_IMPLEMENTED;
1177     }
1178 }
1179
1180 /******************************************************************************
1181  * NtGetCurrentProcessorNumber (NTDLL.@)
1182  *
1183  * Return the processor, on which the thread is running
1184  *
1185  */
1186 ULONG WINAPI NtGetCurrentProcessorNumber(void)
1187 {
1188     ULONG processor;
1189
1190 #if defined(__linux__) && defined(__NR_getcpu)
1191     int res = syscall(__NR_getcpu, &processor, NULL, NULL);
1192     if (res != -1) return processor;
1193 #endif
1194
1195     if (NtCurrentTeb()->Peb->NumberOfProcessors > 1)
1196     {
1197         ULONG_PTR thread_mask, processor_mask;
1198         NTSTATUS status;
1199
1200         status = NtQueryInformationThread(GetCurrentThread(), ThreadAffinityMask,
1201                                           &thread_mask, sizeof(thread_mask), NULL);
1202         if (status == STATUS_SUCCESS)
1203         {
1204             for (processor = 0; processor < NtCurrentTeb()->Peb->NumberOfProcessors; processor++)
1205             {
1206                 processor_mask = (1 << processor);
1207                 if (thread_mask & processor_mask)
1208                 {
1209                     if (thread_mask != processor_mask)
1210                         FIXME("need multicore support (%d processors)\n",
1211                               NtCurrentTeb()->Peb->NumberOfProcessors);
1212                     return processor;
1213                 }
1214             }
1215         }
1216     }
1217
1218     /* fallback to the first processor */
1219     return 0;
1220 }