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 "user.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 "queue.h"
  32 #include "hook.h"
  33
  34 DEFAULT_DEBUG_CHANNEL(thread)
  35
  36 /* TEB of the initial thread */
  37 static TEB initial_teb;
  38
  39 /* Global thread list (FIXME: not thread-safe) */
  40 TEB *THREAD_First = &initial_teb;
  41
  42 /***********************************************************************
  43  *           THREAD_IsWin16
  44  */
  45 BOOL THREAD_IsWin16( TEB *teb )
  46 {
  47     return !teb || !(teb->tibflags & TEBF_WIN32);
  48 }
  49
  50 /***********************************************************************
  51  *           THREAD_IdToTEB
  52  *
  53  * Convert a thread id to a TEB, making sure it is valid.
  54  */
  55 TEB *THREAD_IdToTEB( DWORD id )
  56 {
  57     TEB *teb = THREAD_First;
  58
  59     if (!id) return NtCurrentTeb();
  60     while (teb)
  61     {
  62         if ((DWORD)teb->tid == id) return teb;
  63         teb = teb->next;
  64     }
  65     /* Allow task handles to be used; convert to main thread */
  66     if ( IsTask16( id ) )
  67     {
  68         TDB *pTask = (TDB *)GlobalLock16( id );
  69         if (pTask) return pTask->teb;
  70     }
  71     SetLastError( ERROR_INVALID_PARAMETER );
  72     return NULL;
  73 }
  74
  75
  76 /***********************************************************************
  77  *           THREAD_InitTEB
  78  *
  79  * Initialization of a newly created TEB.
  80  */
  81 static BOOL THREAD_InitTEB( TEB *teb, DWORD stack_size, BOOL alloc_stack16,
  82                             LPSECURITY_ATTRIBUTES sa )
  83 {
  84     DWORD old_prot;
  85
  86     /* Allocate the stack */
  87
  88     /* FIXME:
  89      * If stacksize smaller than 1 MB, allocate 1MB
  90      * (one program wanted only 10 kB, which is recommendable, but some WINE
  91      *  functions, noteably in the files subdir, push HUGE structures and
  92      *  arrays on the stack. They probably shouldn't.)
  93      * If stacksize larger than 16 MB, warn the user. (We could shrink the stack
  94      * but this could give more or less unexplainable crashes.)
  95      */
  96     if (stack_size<1024*1024)
  97         stack_size = 1024 * 1024;
  98     if (stack_size >= 16*1024*1024)
  99         WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024);
 100     teb->stack_base = VirtualAlloc(NULL, stack_size + SIGNAL_STACK_SIZE +
 101                                    (alloc_stack16 ? 0x10000 : 0),
 102                                    MEM_COMMIT, PAGE_EXECUTE_READWRITE );
 103     if (!teb->stack_base) goto error;
 104     /* Set a guard page at the bottom of the stack */
 105     VirtualProtect( teb->stack_base, 1, PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_prot );
 106     teb->stack_top    = (char *)teb->stack_base + stack_size;
 107     teb->stack_low    = teb->stack_base;
 108     teb->signal_stack = teb->stack_top;  /* start of signal stack */
 109
 110     /* Allocate the 16-bit stack selector */
 111
 112     if (alloc_stack16)
 113     {
 114         teb->stack_sel = SELECTOR_AllocBlock( teb->stack_top, 0x10000, SEGMENT_DATA,
 115                                               FALSE, FALSE );
 116         if (!teb->stack_sel) goto error;
 117         teb->cur_stack = PTR_SEG_OFF_TO_SEGPTR( teb->stack_sel,
 118                                                 0x10000 - sizeof(STACK16FRAME) );
 119         teb->signal_stack = (char *)teb->signal_stack + 0x10000;
 120     }
 121
 122     /* StaticUnicodeString */
 123
 124     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 125     teb->StaticUnicodeString.Buffer = (PWSTR)teb->StaticUnicodeBuffer;
 126
 127     return TRUE;
 128
 129 error:
 130     if (teb->stack_sel) SELECTOR_FreeBlock( teb->stack_sel, 1 );
 131     if (teb->stack_base) VirtualFree( teb->stack_base, 0, MEM_RELEASE );
 132     return FALSE;
 133 }
 134
 135
 136 /***********************************************************************
 137  *           THREAD_FreeTEB
 138  *
 139  * Free data structures associated with a thread.
 140  * Must be called from the context of another thread.
 141  */
 142 void CALLBACK THREAD_FreeTEB( ULONG_PTR arg )
 143 {
 144     TEB *teb = (TEB *)arg;
 145     TEB **pptr = &THREAD_First;
 146
 147     TRACE("(%p) called\n", teb );
 148     SERVICE_Delete( teb->cleanup );
 149
 150     PROCESS_CallUserSignalProc( USIG_THREAD_EXIT, (DWORD)teb->tid, 0 );
 151
 152     while (*pptr && (*pptr != teb)) pptr = &(*pptr)->next;
 153     if (*pptr) *pptr = teb->next;
 154
 155     /* Free the associated memory */
 156
 157     if (teb->stack_sel) SELECTOR_FreeBlock( teb->stack_sel, 1 );
 158     SELECTOR_FreeBlock( teb->teb_sel, 1 );
 159     close( teb->socket );
 160     if (teb->buffer) munmap( teb->buffer, teb->buffer_size );
 161     if (teb->debug_info) HeapFree( GetProcessHeap(), 0, teb->debug_info );
 162     VirtualFree( teb->stack_base, 0, MEM_RELEASE );
 163     VirtualFree( teb, 0, MEM_FREE );
 164 }
 165
 166
 167 /***********************************************************************
 168  *           THREAD_CreateInitialThread
 169  *
 170  * Create the initial thread.
 171  */
 172 TEB *THREAD_CreateInitialThread( PDB *pdb, int server_fd )
 173 {
 174     initial_teb.except      = (void *)-1;
 175     initial_teb.self        = &initial_teb;
 176     initial_teb.tibflags    = (pdb->flags & PDB32_WIN16_PROC)? 0 : TEBF_WIN32;
 177     initial_teb.tls_ptr     = initial_teb.tls_array;
 178     initial_teb.process     = pdb;
 179     initial_teb.exit_code   = STILL_ACTIVE;
 180     initial_teb.socket      = server_fd;
 181
 182     /* Allocate the TEB selector (%fs register) */
 183
 184     if (!(initial_teb.teb_sel = SELECTOR_AllocBlock( &initial_teb, 0x1000,
 185                                                      SEGMENT_DATA, TRUE, FALSE )))
 186     {
 187         MESSAGE("Could not allocate fs register for initial thread\n" );
 188         return NULL;
 189     }
 190     SYSDEPS_SetCurThread( &initial_teb );
 191
 192     /* Now proceed with normal initialization */
 193
 194     if (CLIENT_InitThread()) return NULL;
 195     if (!THREAD_InitTEB( &initial_teb, 0, TRUE, NULL )) return NULL;
 196     return &initial_teb;
 197 }
 198
 199
 200 /***********************************************************************
 201  *           THREAD_Create
 202  *
 203  * NOTES:
 204  *      Native NT dlls are using the space left on the allocated page
 205  *      the first allocated TEB on NT is at 0x7ffde000, since we can't
 206  *      allocate in this area and don't support a granularity of 4kb
 207  *      yet we leave it to VirtualAlloc to choose an address.
 208  */
 209 TEB *THREAD_Create( PDB *pdb, int fd, DWORD flags, DWORD stack_size, BOOL alloc_stack16,
 210                     LPSECURITY_ATTRIBUTES sa, int *server_handle )
 211 {
 212     struct new_thread_request *req = get_req_buffer();
 213     HANDLE cleanup_object;
 214
 215     TEB *teb = VirtualAlloc(0, 0x1000, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
 216     if (!teb) return NULL;
 217     teb->except      = (void *)-1;
 218     teb->htask16     = pdb->task;
 219     teb->self        = teb;
 220     teb->tibflags    = (pdb->flags & PDB32_WIN16_PROC)? 0 : TEBF_WIN32;
 221     teb->tls_ptr     = teb->tls_array;
 222     teb->process     = pdb;
 223     teb->exit_code   = STILL_ACTIVE;
 224     teb->socket      = fd;
 225
 226     /* Allocate the TEB selector (%fs register) */
 227
 228     *server_handle = -1;
 229     teb->teb_sel = SELECTOR_AllocBlock( teb, 0x1000, SEGMENT_DATA, TRUE, FALSE );
 230     if (!teb->teb_sel) goto error;
 231
 232     /* Create the thread on the server side */
 233
 234     if (teb->socket == -1)
 235     {
 236         req->suspend = ((flags & CREATE_SUSPENDED) != 0);
 237         req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
 238         if (server_call_fd( REQ_NEW_THREAD, -1, &teb->socket )) goto error;
 239         teb->tid = req->tid;
 240         *server_handle = req->handle;
 241         fcntl( teb->socket, F_SETFD, 1 ); /* set close on exec flag */
 242     }
 243
 244     /* Do the rest of the initialization */
 245
 246     if (!THREAD_InitTEB( teb, stack_size, alloc_stack16, sa )) goto error;
 247     teb->next = THREAD_First;
 248     THREAD_First = teb;
 249
 250     /* Install cleanup handler */
 251     if ( !DuplicateHandle( GetCurrentProcess(), *server_handle,
 252                            GetCurrentProcess(), &cleanup_object,
 253                            0, FALSE, DUPLICATE_SAME_ACCESS ) ) goto error;
 254     teb->cleanup = SERVICE_AddObject( cleanup_object, THREAD_FreeTEB, (ULONG_PTR)teb );
 255
 256     TRACE("(%p) succeeded\n", teb);
 257     return teb;
 258
 259 error:
 260     if (*server_handle != -1) CloseHandle( *server_handle );
 261     if (teb->teb_sel) SELECTOR_FreeBlock( teb->teb_sel, 1 );
 262     if (teb->socket != -1) close( teb->socket );
 263     VirtualFree( teb, 0, MEM_FREE );
 264     return NULL;
 265 }
 266
 267
 268 /***********************************************************************
 269  *           THREAD_Start
 270  *
 271  * Start execution of a newly created thread. Does not return.
 272  */
 273 static void THREAD_Start(void)
 274 {
 275     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)NtCurrentTeb()->entry_point;
 276     PROCESS_CallUserSignalProc( USIG_THREAD_INIT, (DWORD)NtCurrentTeb()->tid, 0 );
 277     PE_InitTls();
 278     MODULE_DllThreadAttach( NULL );
 279     ExitThread( func( NtCurrentTeb()->entry_arg ) );
 280 }
 281
 282
 283 /***********************************************************************
 284  *           CreateThread   (KERNEL32.63)
 285  */
 286 HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, DWORD stack,
 287                             LPTHREAD_START_ROUTINE start, LPVOID param,
 288                             DWORD flags, LPDWORD id )
 289 {
 290     int handle = -1;
 291     TEB *teb = THREAD_Create( PROCESS_Current(), -1, flags, stack, TRUE, sa, &handle );
 292     if (!teb) return 0;
 293     teb->tibflags   |= TEBF_WIN32;
 294     teb->entry_point = start;
 295     teb->entry_arg   = param;
 296     teb->startup     = THREAD_Start;
 297     if (SYSDEPS_SpawnThread( teb ) == -1)
 298     {
 299         CloseHandle( handle );
 300         return 0;
 301     }
 302     if (id) *id = (DWORD)teb->tid;
 303     return handle;
 304 }
 305
 306 /***********************************************************************
 307  *           CreateThread16   (KERNEL.441)
 308  */
 309 static DWORD CALLBACK THREAD_StartThread16( LPVOID threadArgs )
 310 {
 311     FARPROC16 start = ((FARPROC16 *)threadArgs)[0];
 312     DWORD     param = ((DWORD *)threadArgs)[1];
 313     HeapFree( GetProcessHeap(), 0, threadArgs );
 314
 315     ((LPDWORD)CURRENT_STACK16)[-1] = param;
 316     return CallTo16Long( start, sizeof(DWORD) );
 317 }
 318 HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
 319                               FARPROC16 start, SEGPTR param,
 320                               DWORD flags, LPDWORD id )
 321 {
 322     DWORD *threadArgs = HeapAlloc( GetProcessHeap(), 0, 2*sizeof(DWORD) );
 323     if (!threadArgs) return INVALID_HANDLE_VALUE;
 324     threadArgs[0] = (DWORD)start;
 325     threadArgs[1] = (DWORD)param;
 326
 327     return CreateThread( sa, stack, THREAD_StartThread16, threadArgs, flags, id );
 328 }
 329
 330
 331 /***********************************************************************
 332  * ExitThread [KERNEL32.215]  Ends a thread
 333  *
 334  * RETURNS
 335  *    None
 336  */
 337 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 338 {
 339     MODULE_DllThreadDetach( NULL );
 340     TerminateThread( GetCurrentThread(), code );
 341 }
 342
 343
 344 /***********************************************************************
 345  * GetCurrentThread [KERNEL32.200]  Gets pseudohandle for current thread
 346  *
 347  * RETURNS
 348  *    Pseudohandle for the current thread
 349  */
 350 HANDLE WINAPI GetCurrentThread(void)
 351 {
 352     return CURRENT_THREAD_PSEUDOHANDLE;
 353 }
 354
 355
 356 /**********************************************************************
 357  * SetLastErrorEx [USER32.485]  Sets the last-error code.
 358  *
 359  * RETURNS
 360  *    None.
 361  */
 362 void WINAPI SetLastErrorEx(
 363     DWORD error, /* [in] Per-thread error code */
 364     DWORD type)  /* [in] Error type */
 365 {
 366     TRACE("(0x%08lx, 0x%08lx)\n", error,type);
 367     switch(type) {
 368         case 0:
 369             break;
 370         case SLE_ERROR:
 371         case SLE_MINORERROR:
 372         case SLE_WARNING:
 373             /* Fall through for now */
 374         default:
 375             FIXME("(error=%08lx, type=%08lx): Unhandled type\n", error,type);
 376             break;
 377     }
 378     SetLastError( error );
 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     PDB *process = PROCESS_Current();
 394     DWORD i, mask, ret = 0;
 395     DWORD *bits = process->tls_bits;
 396     EnterCriticalSection( &process->crit_section );
 397     if (*bits == 0xffffffff)
 398     {
 399         bits++;
 400         ret = 32;
 401         if (*bits == 0xffffffff)
 402         {
 403             LeaveCriticalSection( &process->crit_section );
 404             SetLastError( ERROR_NO_MORE_ITEMS );
 405             return 0xffffffff;
 406         }
 407     }
 408     for (i = 0, mask = 1; i < 32; i++, mask <<= 1) if (!(*bits & mask)) break;
 409     *bits |= mask;
 410     LeaveCriticalSection( &process->crit_section );
 411     return ret + i;
 412 }
 413
 414
 415 /**********************************************************************
 416  * TlsFree [KERNEL32.531]  Releases a TLS index.
 417  *
 418  * Releases a thread local storage index, making it available for reuse
 419  *
 420  * RETURNS
 421  *    Success: TRUE
 422  *    Failure: FALSE
 423  */
 424 BOOL WINAPI TlsFree(
 425     DWORD index) /* [in] TLS Index to free */
 426 {
 427     PDB *process = PROCESS_Current();
 428     DWORD mask;
 429     DWORD *bits = process->tls_bits;
 430     if (index >= 64)
 431     {
 432         SetLastError( ERROR_INVALID_PARAMETER );
 433         return FALSE;
 434     }
 435     EnterCriticalSection( &process->crit_section );
 436     if (index >= 32) bits++;
 437     mask = (1 << (index & 31));
 438     if (!(*bits & mask))  /* already free? */
 439     {
 440         LeaveCriticalSection( &process->crit_section );
 441         SetLastError( ERROR_INVALID_PARAMETER );
 442         return FALSE;
 443     }
 444     *bits &= ~mask;
 445     NtCurrentTeb()->tls_array[index] = 0;
 446     /* FIXME: should zero all other thread values */
 447     LeaveCriticalSection( &process->crit_section );
 448     return TRUE;
 449 }
 450
 451
 452 /**********************************************************************
 453  * TlsGetValue [KERNEL32.532]  Gets value in a thread's TLS slot
 454  *
 455  * RETURNS
 456  *    Success: Value stored in calling thread's TLS slot for index
 457  *    Failure: 0 and GetLastError returns NO_ERROR
 458  */
 459 LPVOID WINAPI TlsGetValue(
 460     DWORD index) /* [in] TLS index to retrieve value for */
 461 {
 462     if (index >= 64)
 463     {
 464         SetLastError( ERROR_INVALID_PARAMETER );
 465         return NULL;
 466     }
 467     SetLastError( ERROR_SUCCESS );
 468     return NtCurrentTeb()->tls_array[index];
 469 }
 470
 471
 472 /**********************************************************************
 473  * TlsSetValue [KERNEL32.533]  Stores a value in the thread's TLS slot.
 474  *
 475  * RETURNS
 476  *    Success: TRUE
 477  *    Failure: FALSE
 478  */
 479 BOOL WINAPI TlsSetValue(
 480     DWORD index,  /* [in] TLS index to set value for */
 481     LPVOID value) /* [in] Value to be stored */
 482 {
 483     if (index >= 64)
 484     {
 485         SetLastError( ERROR_INVALID_PARAMETER );
 486         return FALSE;
 487     }
 488     NtCurrentTeb()->tls_array[index] = value;
 489     return TRUE;
 490 }
 491
 492
 493 /***********************************************************************
 494  * SetThreadContext [KERNEL32.670]  Sets context of thread.
 495  *
 496  * RETURNS
 497  *    Success: TRUE
 498  *    Failure: FALSE
 499  */
 500 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 501                               const CONTEXT *context ) /* [in] Address of context structure */
 502 {
 503     struct set_thread_context_request *req = get_req_buffer();
 504     req->handle = handle;
 505     req->flags = context->ContextFlags;
 506     memcpy( &req->context, context, sizeof(*context) );
 507     return !server_call( REQ_SET_THREAD_CONTEXT );
 508 }
 509
 510
 511 /***********************************************************************
 512  * GetThreadContext [KERNEL32.294]  Retrieves context of thread.
 513  *
 514  * RETURNS
 515  *    Success: TRUE
 516  *    Failure: FALSE
 517  */
 518 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 519                               CONTEXT *context ) /* [out] Address of context structure */
 520 {
 521     struct get_thread_context_request *req = get_req_buffer();
 522     req->handle = handle;
 523     req->flags = context->ContextFlags;
 524     memcpy( &req->context, context, sizeof(*context) );
 525     if (server_call( REQ_GET_THREAD_CONTEXT )) return FALSE;
 526     memcpy( context, &req->context, sizeof(*context) );
 527     return TRUE;
 528 }
 529
 530
 531 /**********************************************************************
 532  * GetThreadPriority [KERNEL32.296]  Returns priority for thread.
 533  *
 534  * RETURNS
 535  *    Success: Thread's priority level.
 536  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 537  */
 538 INT WINAPI GetThreadPriority(
 539     HANDLE hthread) /* [in] Handle to thread */
 540 {
 541     INT ret = THREAD_PRIORITY_ERROR_RETURN;
 542     struct get_thread_info_request *req = get_req_buffer();
 543     req->handle = hthread;
 544     if (!server_call( REQ_GET_THREAD_INFO )) ret = req->priority;
 545     return ret;
 546 }
 547
 548
 549 /**********************************************************************
 550  * SetThreadPriority [KERNEL32.514]  Sets priority for thread.
 551  *
 552  * RETURNS
 553  *    Success: TRUE
 554  *    Failure: FALSE
 555  */
 556 BOOL WINAPI SetThreadPriority(
 557     HANDLE hthread, /* [in] Handle to thread */
 558     INT priority)   /* [in] Thread priority level */
 559 {
 560     struct set_thread_info_request *req = get_req_buffer();
 561     req->handle   = hthread;
 562     req->priority = priority;
 563     req->mask     = SET_THREAD_INFO_PRIORITY;
 564     return !server_call( REQ_SET_THREAD_INFO );
 565 }
 566
 567
 568 /**********************************************************************
 569  *           SetThreadAffinityMask   (KERNEL32.669)
 570  */
 571 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 572 {
 573     struct set_thread_info_request *req = get_req_buffer();
 574     req->handle   = hThread;
 575     req->affinity = dwThreadAffinityMask;
 576     req->mask     = SET_THREAD_INFO_AFFINITY;
 577     if (server_call( REQ_SET_THREAD_INFO )) return 0;
 578     return 1;  /* FIXME: should return previous value */
 579 }
 580
 581
 582 /**********************************************************************
 583  * TerminateThread [KERNEL32.685]  Terminates a thread
 584  *
 585  * RETURNS
 586  *    Success: TRUE
 587  *    Failure: FALSE
 588  */
 589 BOOL WINAPI TerminateThread(
 590     HANDLE handle, /* [in] Handle to thread */
 591     DWORD exitcode)  /* [in] Exit code for thread */
 592 {
 593     struct terminate_thread_request *req = get_req_buffer();
 594     req->handle    = handle;
 595     req->exit_code = exitcode;
 596     return !server_call( REQ_TERMINATE_THREAD );
 597 }
 598
 599
 600 /**********************************************************************
 601  * GetExitCodeThread [KERNEL32.???]  Gets termination status of thread.
 602  *
 603  * RETURNS
 604  *    Success: TRUE
 605  *    Failure: FALSE
 606  */
 607 BOOL WINAPI GetExitCodeThread(
 608     HANDLE hthread, /* [in]  Handle to thread */
 609     LPDWORD exitcode) /* [out] Address to receive termination status */
 610 {
 611     BOOL ret = FALSE;
 612     struct get_thread_info_request *req = get_req_buffer();
 613     req->handle = hthread;
 614     if (!server_call( REQ_GET_THREAD_INFO ))
 615     {
 616         if (exitcode) *exitcode = req->exit_code;
 617         ret = TRUE;
 618     }
 619     return ret;
 620 }
 621
 622
 623 /**********************************************************************
 624  * ResumeThread [KERNEL32.587]  Resumes a thread.
 625  *
 626  * Decrements a thread's suspend count.  When count is zero, the
 627  * execution of the thread is resumed.
 628  *
 629  * RETURNS
 630  *    Success: Previous suspend count
 631  *    Failure: 0xFFFFFFFF
 632  *    Already running: 0
 633  */
 634 DWORD WINAPI ResumeThread(
 635     HANDLE hthread) /* [in] Identifies thread to restart */
 636 {
 637     DWORD ret = 0xffffffff;
 638     struct resume_thread_request *req = get_req_buffer();
 639     req->handle = hthread;
 640     if (!server_call( REQ_RESUME_THREAD )) ret = req->count;
 641     return ret;
 642 }
 643
 644
 645 /**********************************************************************
 646  * SuspendThread [KERNEL32.681]  Suspends a thread.
 647  *
 648  * RETURNS
 649  *    Success: Previous suspend count
 650  *    Failure: 0xFFFFFFFF
 651  */
 652 DWORD WINAPI SuspendThread(
 653     HANDLE hthread) /* [in] Handle to the thread */
 654 {
 655     DWORD ret = 0xffffffff;
 656     struct suspend_thread_request *req = get_req_buffer();
 657     req->handle = hthread;
 658     if (!server_call( REQ_SUSPEND_THREAD )) ret = req->count;
 659     return ret;
 660 }
 661
 662
 663 /***********************************************************************
 664  *              QueueUserAPC  (KERNEL32.566)
 665  */
 666 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 667 {
 668     struct queue_apc_request *req = get_req_buffer();
 669     req->handle = hthread;
 670     req->func   = func;
 671     req->param  = (void *)data;
 672     return !server_call( REQ_QUEUE_APC );
 673 }
 674
 675
 676 /**********************************************************************
 677  * GetThreadTimes [KERNEL32.???]  Obtains timing information.
 678  *
 679  * NOTES
 680  *    What are the fields where these values are stored?
 681  *
 682  * RETURNS
 683  *    Success: TRUE
 684  *    Failure: FALSE
 685  */
 686 BOOL WINAPI GetThreadTimes(
 687     HANDLE thread,         /* [in]  Specifies the thread of interest */
 688     LPFILETIME creationtime, /* [out] When the thread was created */
 689     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 690     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 691     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 692 {
 693     FIXME("(0x%08x): stub\n",thread);
 694     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 695     return FALSE;
 696 }
 697
 698
 699 /**********************************************************************
 700  * AttachThreadInput [KERNEL32.8]  Attaches input of 1 thread to other
 701  *
 702  * Attaches the input processing mechanism of one thread to that of
 703  * another thread.
 704  *
 705  * RETURNS
 706  *    Success: TRUE
 707  *    Failure: FALSE
 708  *
 709  * TODO:
 710  *    1. Reset the Key State (currenly per thread key state is not maintained)
 711  */
 712 BOOL WINAPI AttachThreadInput(
 713     DWORD idAttach,   /* [in] Thread to attach */
 714     DWORD idAttachTo, /* [in] Thread to attach to */
 715     BOOL fAttach)   /* [in] Attach or detach */
 716 {
 717     MESSAGEQUEUE *pSrcMsgQ = 0, *pTgtMsgQ = 0;
 718     BOOL16 bRet = 0;
 719
 720     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 721
 722     /* A thread cannot attach to itself */
 723     if ( idAttach == idAttachTo )
 724         goto CLEANUP;
 725
 726     /* According to the docs this method should fail if a
 727      * "Journal record" hook is installed. (attaches all input queues together)
 728      */
 729     if ( HOOK_IsHooked( WH_JOURNALRECORD ) )
 730         goto CLEANUP;
 731
 732     /* Retrieve message queues corresponding to the thread id's */
 733     pTgtMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttach ) );
 734     pSrcMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttachTo ) );
 735
 736     /* Ensure we have message queues and that Src and Tgt threads
 737      * are not system threads.
 738      */
 739     if ( !pSrcMsgQ || !pTgtMsgQ || !pSrcMsgQ->pQData || !pTgtMsgQ->pQData )
 740         goto CLEANUP;
 741
 742     if (fAttach)   /* Attach threads */
 743     {
 744         /* Only attach if currently detached  */
 745         if ( pTgtMsgQ->pQData != pSrcMsgQ->pQData )
 746         {
 747             /* First release the target threads perQData */
 748             PERQDATA_Release( pTgtMsgQ->pQData );
 749
 750             /* Share a reference to the source threads perQDATA */
 751             PERQDATA_Addref( pSrcMsgQ->pQData );
 752             pTgtMsgQ->pQData = pSrcMsgQ->pQData;
 753         }
 754     }
 755     else    /* Detach threads */
 756     {
 757         /* Only detach if currently attached */
 758         if ( pTgtMsgQ->pQData == pSrcMsgQ->pQData )
 759         {
 760             /* First release the target threads perQData */
 761             PERQDATA_Release( pTgtMsgQ->pQData );
 762
 763             /* Give the target thread its own private perQDATA once more */
 764             pTgtMsgQ->pQData = PERQDATA_CreateInstance();
 765         }
 766     }
 767
 768     /* TODO: Reset the Key State */
 769
 770     bRet = 1;      /* Success */
 771
 772 CLEANUP:
 773
 774     /* Unlock the queues before returning */
 775     if ( pSrcMsgQ )
 776         QUEUE_Unlock( pSrcMsgQ );
 777     if ( pTgtMsgQ )
 778         QUEUE_Unlock( pTgtMsgQ );
 779
 780     return bRet;
 781 }
 782
 783 /**********************************************************************
 784  * VWin32_BoostThreadGroup [KERNEL.535]
 785  */
 786 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 787 {
 788     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 789 }
 790
 791 /**********************************************************************
 792  * VWin32_BoostThreadStatic [KERNEL.536]
 793  */
 794 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 795 {
 796     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 797 }
 798
 799 /**********************************************************************
 800  * SetThreadLocale [KERNEL32.671]  Sets the calling threads current locale.
 801  *
 802  * RETURNS
 803  *    Success: TRUE
 804  *    Failure: FALSE
 805  *
 806  * NOTES
 807  *  Implemented in NT only (3.1 and above according to MS
 808  */
 809 BOOL WINAPI SetThreadLocale(
 810     LCID lcid)     /* [in] Locale identifier */
 811 {
 812     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 813     return FALSE;
 814 }
 815
 816
 817 #ifdef __i386__
 818
 819 /* void WINAPI SetLastError( DWORD error ); */
 820 __ASM_GLOBAL_FUNC( SetLastError,
 821                    "movl 4(%esp),%eax\n\t"
 822                    ".byte 0x64\n\t"
 823                    "movl %eax,0x60\n\t"
 824                    "ret $4" );
 825
 826 /* DWORD WINAPI GetLastError(void); */
 827 __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
 828
 829 /* DWORD WINAPI GetCurrentThreadId(void) */
 830 __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
 831
 832 #else  /* __i386__ */
 833
 834 /**********************************************************************
 835  * SetLastError [KERNEL.147] [KERNEL32.497]  Sets the last-error code.
 836  */
 837 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 838 {
 839     NtCurrentTeb()->last_error = error;
 840 }
 841
 842 /**********************************************************************
 843  * GetLastError [KERNEL.148] [KERNEL32.227]  Returns last-error code.
 844  */
 845 DWORD WINAPI GetLastError(void)
 846 {
 847     return NtCurrentTeb()->last_error;
 848 }
 849
 850 /***********************************************************************
 851  * GetCurrentThreadId [KERNEL32.201]  Returns thread identifier.
 852  */
 853 DWORD WINAPI GetCurrentThreadId(void)
 854 {
 855     return (DWORD)NtCurrentTeb()->tid;
 856 }
 857
 858 #endif  /* __i386__ */