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     struct terminate_thread_request *req = get_req_buffer();
 340
 341      /* send the exit code to the server */
 342     req->handle    = GetCurrentThread();
 343     req->exit_code = code;
 344     server_call( REQ_TERMINATE_THREAD );
 345     if (req->last)
 346     {
 347         MODULE_DllProcessDetach( TRUE, (LPVOID)1 );
 348         TASK_KillTask( 0 );
 349         exit( code );
 350     }
 351     else
 352     {
 353         MODULE_DllThreadDetach( NULL );
 354         SYSDEPS_ExitThread( code );
 355     }
 356 }
 357
 358
 359 /***********************************************************************
 360  * GetCurrentThread [KERNEL32.200]  Gets pseudohandle for current thread
 361  *
 362  * RETURNS
 363  *    Pseudohandle for the current thread
 364  */
 365 HANDLE WINAPI GetCurrentThread(void)
 366 {
 367     return CURRENT_THREAD_PSEUDOHANDLE;
 368 }
 369
 370
 371 /**********************************************************************
 372  * SetLastErrorEx [USER32.485]  Sets the last-error code.
 373  *
 374  * RETURNS
 375  *    None.
 376  */
 377 void WINAPI SetLastErrorEx(
 378     DWORD error, /* [in] Per-thread error code */
 379     DWORD type)  /* [in] Error type */
 380 {
 381     TRACE("(0x%08lx, 0x%08lx)\n", error,type);
 382     switch(type) {
 383         case 0:
 384             break;
 385         case SLE_ERROR:
 386         case SLE_MINORERROR:
 387         case SLE_WARNING:
 388             /* Fall through for now */
 389         default:
 390             FIXME("(error=%08lx, type=%08lx): Unhandled type\n", error,type);
 391             break;
 392     }
 393     SetLastError( error );
 394 }
 395
 396
 397 /**********************************************************************
 398  * TlsAlloc [KERNEL32.530]  Allocates a TLS index.
 399  *
 400  * Allocates a thread local storage index
 401  *
 402  * RETURNS
 403  *    Success: TLS Index
 404  *    Failure: 0xFFFFFFFF
 405  */
 406 DWORD WINAPI TlsAlloc( void )
 407 {
 408     PDB *process = PROCESS_Current();
 409     DWORD i, mask, ret = 0;
 410     DWORD *bits = process->tls_bits;
 411     EnterCriticalSection( &process->crit_section );
 412     if (*bits == 0xffffffff)
 413     {
 414         bits++;
 415         ret = 32;
 416         if (*bits == 0xffffffff)
 417         {
 418             LeaveCriticalSection( &process->crit_section );
 419             SetLastError( ERROR_NO_MORE_ITEMS );
 420             return 0xffffffff;
 421         }
 422     }
 423     for (i = 0, mask = 1; i < 32; i++, mask <<= 1) if (!(*bits & mask)) break;
 424     *bits |= mask;
 425     LeaveCriticalSection( &process->crit_section );
 426     return ret + i;
 427 }
 428
 429
 430 /**********************************************************************
 431  * TlsFree [KERNEL32.531]  Releases a TLS index.
 432  *
 433  * Releases a thread local storage index, making it available for reuse
 434  *
 435  * RETURNS
 436  *    Success: TRUE
 437  *    Failure: FALSE
 438  */
 439 BOOL WINAPI TlsFree(
 440     DWORD index) /* [in] TLS Index to free */
 441 {
 442     PDB *process = PROCESS_Current();
 443     DWORD mask;
 444     DWORD *bits = process->tls_bits;
 445     if (index >= 64)
 446     {
 447         SetLastError( ERROR_INVALID_PARAMETER );
 448         return FALSE;
 449     }
 450     EnterCriticalSection( &process->crit_section );
 451     if (index >= 32) bits++;
 452     mask = (1 << (index & 31));
 453     if (!(*bits & mask))  /* already free? */
 454     {
 455         LeaveCriticalSection( &process->crit_section );
 456         SetLastError( ERROR_INVALID_PARAMETER );
 457         return FALSE;
 458     }
 459     *bits &= ~mask;
 460     NtCurrentTeb()->tls_array[index] = 0;
 461     /* FIXME: should zero all other thread values */
 462     LeaveCriticalSection( &process->crit_section );
 463     return TRUE;
 464 }
 465
 466
 467 /**********************************************************************
 468  * TlsGetValue [KERNEL32.532]  Gets value in a thread's TLS slot
 469  *
 470  * RETURNS
 471  *    Success: Value stored in calling thread's TLS slot for index
 472  *    Failure: 0 and GetLastError returns NO_ERROR
 473  */
 474 LPVOID WINAPI TlsGetValue(
 475     DWORD index) /* [in] TLS index to retrieve value for */
 476 {
 477     if (index >= 64)
 478     {
 479         SetLastError( ERROR_INVALID_PARAMETER );
 480         return NULL;
 481     }
 482     SetLastError( ERROR_SUCCESS );
 483     return NtCurrentTeb()->tls_array[index];
 484 }
 485
 486
 487 /**********************************************************************
 488  * TlsSetValue [KERNEL32.533]  Stores a value in the thread's TLS slot.
 489  *
 490  * RETURNS
 491  *    Success: TRUE
 492  *    Failure: FALSE
 493  */
 494 BOOL WINAPI TlsSetValue(
 495     DWORD index,  /* [in] TLS index to set value for */
 496     LPVOID value) /* [in] Value to be stored */
 497 {
 498     if (index >= 64)
 499     {
 500         SetLastError( ERROR_INVALID_PARAMETER );
 501         return FALSE;
 502     }
 503     NtCurrentTeb()->tls_array[index] = value;
 504     return TRUE;
 505 }
 506
 507
 508 /***********************************************************************
 509  * SetThreadContext [KERNEL32.670]  Sets context of thread.
 510  *
 511  * RETURNS
 512  *    Success: TRUE
 513  *    Failure: FALSE
 514  */
 515 BOOL WINAPI SetThreadContext( HANDLE handle,           /* [in]  Handle to thread with context */
 516                               const CONTEXT *context ) /* [in] Address of context structure */
 517 {
 518     struct set_thread_context_request *req = get_req_buffer();
 519     req->handle = handle;
 520     req->flags = context->ContextFlags;
 521     memcpy( &req->context, context, sizeof(*context) );
 522     return !server_call( REQ_SET_THREAD_CONTEXT );
 523 }
 524
 525
 526 /***********************************************************************
 527  * GetThreadContext [KERNEL32.294]  Retrieves context of thread.
 528  *
 529  * RETURNS
 530  *    Success: TRUE
 531  *    Failure: FALSE
 532  */
 533 BOOL WINAPI GetThreadContext( HANDLE handle,     /* [in]  Handle to thread with context */
 534                               CONTEXT *context ) /* [out] Address of context structure */
 535 {
 536     struct get_thread_context_request *req = get_req_buffer();
 537     req->handle = handle;
 538     req->flags = context->ContextFlags;
 539     memcpy( &req->context, context, sizeof(*context) );
 540     if (server_call( REQ_GET_THREAD_CONTEXT )) return FALSE;
 541     memcpy( context, &req->context, sizeof(*context) );
 542     return TRUE;
 543 }
 544
 545
 546 /**********************************************************************
 547  * GetThreadPriority [KERNEL32.296]  Returns priority for thread.
 548  *
 549  * RETURNS
 550  *    Success: Thread's priority level.
 551  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 552  */
 553 INT WINAPI GetThreadPriority(
 554     HANDLE hthread) /* [in] Handle to thread */
 555 {
 556     INT ret = THREAD_PRIORITY_ERROR_RETURN;
 557     struct get_thread_info_request *req = get_req_buffer();
 558     req->handle = hthread;
 559     if (!server_call( REQ_GET_THREAD_INFO )) ret = req->priority;
 560     return ret;
 561 }
 562
 563
 564 /**********************************************************************
 565  * SetThreadPriority [KERNEL32.514]  Sets priority for thread.
 566  *
 567  * RETURNS
 568  *    Success: TRUE
 569  *    Failure: FALSE
 570  */
 571 BOOL WINAPI SetThreadPriority(
 572     HANDLE hthread, /* [in] Handle to thread */
 573     INT priority)   /* [in] Thread priority level */
 574 {
 575     struct set_thread_info_request *req = get_req_buffer();
 576     req->handle   = hthread;
 577     req->priority = priority;
 578     req->mask     = SET_THREAD_INFO_PRIORITY;
 579     return !server_call( REQ_SET_THREAD_INFO );
 580 }
 581
 582
 583 /**********************************************************************
 584  *           SetThreadAffinityMask   (KERNEL32.669)
 585  */
 586 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 587 {
 588     struct set_thread_info_request *req = get_req_buffer();
 589     req->handle   = hThread;
 590     req->affinity = dwThreadAffinityMask;
 591     req->mask     = SET_THREAD_INFO_AFFINITY;
 592     if (server_call( REQ_SET_THREAD_INFO )) return 0;
 593     return 1;  /* FIXME: should return previous value */
 594 }
 595
 596
 597 /**********************************************************************
 598  * TerminateThread [KERNEL32.685]  Terminates a thread
 599  *
 600  * RETURNS
 601  *    Success: TRUE
 602  *    Failure: FALSE
 603  */
 604 BOOL WINAPI TerminateThread(
 605     HANDLE handle, /* [in] Handle to thread */
 606     DWORD exitcode)  /* [in] Exit code for thread */
 607 {
 608     BOOL ret;
 609     struct terminate_thread_request *req = get_req_buffer();
 610     req->handle    = handle;
 611     req->exit_code = exitcode;
 612     if ((ret = !server_call( REQ_TERMINATE_THREAD )) && req->self)
 613     {
 614         if (req->last) exit( exitcode );
 615         else SYSDEPS_ExitThread( exitcode );
 616     }
 617     return ret;
 618 }
 619
 620
 621 /**********************************************************************
 622  * GetExitCodeThread [KERNEL32.???]  Gets termination status of thread.
 623  *
 624  * RETURNS
 625  *    Success: TRUE
 626  *    Failure: FALSE
 627  */
 628 BOOL WINAPI GetExitCodeThread(
 629     HANDLE hthread, /* [in]  Handle to thread */
 630     LPDWORD exitcode) /* [out] Address to receive termination status */
 631 {
 632     BOOL ret = FALSE;
 633     struct get_thread_info_request *req = get_req_buffer();
 634     req->handle = hthread;
 635     if (!server_call( REQ_GET_THREAD_INFO ))
 636     {
 637         if (exitcode) *exitcode = req->exit_code;
 638         ret = TRUE;
 639     }
 640     return ret;
 641 }
 642
 643
 644 /**********************************************************************
 645  * ResumeThread [KERNEL32.587]  Resumes a thread.
 646  *
 647  * Decrements a thread's suspend count.  When count is zero, the
 648  * execution of the thread is resumed.
 649  *
 650  * RETURNS
 651  *    Success: Previous suspend count
 652  *    Failure: 0xFFFFFFFF
 653  *    Already running: 0
 654  */
 655 DWORD WINAPI ResumeThread(
 656     HANDLE hthread) /* [in] Identifies thread to restart */
 657 {
 658     DWORD ret = 0xffffffff;
 659     struct resume_thread_request *req = get_req_buffer();
 660     req->handle = hthread;
 661     if (!server_call( REQ_RESUME_THREAD )) ret = req->count;
 662     return ret;
 663 }
 664
 665
 666 /**********************************************************************
 667  * SuspendThread [KERNEL32.681]  Suspends a thread.
 668  *
 669  * RETURNS
 670  *    Success: Previous suspend count
 671  *    Failure: 0xFFFFFFFF
 672  */
 673 DWORD WINAPI SuspendThread(
 674     HANDLE hthread) /* [in] Handle to the thread */
 675 {
 676     DWORD ret = 0xffffffff;
 677     struct suspend_thread_request *req = get_req_buffer();
 678     req->handle = hthread;
 679     if (!server_call( REQ_SUSPEND_THREAD )) ret = req->count;
 680     return ret;
 681 }
 682
 683
 684 /***********************************************************************
 685  *              QueueUserAPC  (KERNEL32.566)
 686  */
 687 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 688 {
 689     struct queue_apc_request *req = get_req_buffer();
 690     req->handle = hthread;
 691     req->func   = func;
 692     req->param  = (void *)data;
 693     return !server_call( REQ_QUEUE_APC );
 694 }
 695
 696
 697 /**********************************************************************
 698  * GetThreadTimes [KERNEL32.???]  Obtains timing information.
 699  *
 700  * NOTES
 701  *    What are the fields where these values are stored?
 702  *
 703  * RETURNS
 704  *    Success: TRUE
 705  *    Failure: FALSE
 706  */
 707 BOOL WINAPI GetThreadTimes(
 708     HANDLE thread,         /* [in]  Specifies the thread of interest */
 709     LPFILETIME creationtime, /* [out] When the thread was created */
 710     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 711     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 712     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 713 {
 714     FIXME("(0x%08x): stub\n",thread);
 715     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 716     return FALSE;
 717 }
 718
 719
 720 /**********************************************************************
 721  * AttachThreadInput [KERNEL32.8]  Attaches input of 1 thread to other
 722  *
 723  * Attaches the input processing mechanism of one thread to that of
 724  * another thread.
 725  *
 726  * RETURNS
 727  *    Success: TRUE
 728  *    Failure: FALSE
 729  *
 730  * TODO:
 731  *    1. Reset the Key State (currenly per thread key state is not maintained)
 732  */
 733 BOOL WINAPI AttachThreadInput(
 734     DWORD idAttach,   /* [in] Thread to attach */
 735     DWORD idAttachTo, /* [in] Thread to attach to */
 736     BOOL fAttach)   /* [in] Attach or detach */
 737 {
 738     MESSAGEQUEUE *pSrcMsgQ = 0, *pTgtMsgQ = 0;
 739     BOOL16 bRet = 0;
 740
 741     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 742
 743     /* A thread cannot attach to itself */
 744     if ( idAttach == idAttachTo )
 745         goto CLEANUP;
 746
 747     /* According to the docs this method should fail if a
 748      * "Journal record" hook is installed. (attaches all input queues together)
 749      */
 750     if ( HOOK_IsHooked( WH_JOURNALRECORD ) )
 751         goto CLEANUP;
 752
 753     /* Retrieve message queues corresponding to the thread id's */
 754     pTgtMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttach ) );
 755     pSrcMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttachTo ) );
 756
 757     /* Ensure we have message queues and that Src and Tgt threads
 758      * are not system threads.
 759      */
 760     if ( !pSrcMsgQ || !pTgtMsgQ || !pSrcMsgQ->pQData || !pTgtMsgQ->pQData )
 761         goto CLEANUP;
 762
 763     if (fAttach)   /* Attach threads */
 764     {
 765         /* Only attach if currently detached  */
 766         if ( pTgtMsgQ->pQData != pSrcMsgQ->pQData )
 767         {
 768             /* First release the target threads perQData */
 769             PERQDATA_Release( pTgtMsgQ->pQData );
 770
 771             /* Share a reference to the source threads perQDATA */
 772             PERQDATA_Addref( pSrcMsgQ->pQData );
 773             pTgtMsgQ->pQData = pSrcMsgQ->pQData;
 774         }
 775     }
 776     else    /* Detach threads */
 777     {
 778         /* Only detach if currently attached */
 779         if ( pTgtMsgQ->pQData == pSrcMsgQ->pQData )
 780         {
 781             /* First release the target threads perQData */
 782             PERQDATA_Release( pTgtMsgQ->pQData );
 783
 784             /* Give the target thread its own private perQDATA once more */
 785             pTgtMsgQ->pQData = PERQDATA_CreateInstance();
 786         }
 787     }
 788
 789     /* TODO: Reset the Key State */
 790
 791     bRet = 1;      /* Success */
 792
 793 CLEANUP:
 794
 795     /* Unlock the queues before returning */
 796     if ( pSrcMsgQ )
 797         QUEUE_Unlock( pSrcMsgQ );
 798     if ( pTgtMsgQ )
 799         QUEUE_Unlock( pTgtMsgQ );
 800
 801     return bRet;
 802 }
 803
 804 /**********************************************************************
 805  * VWin32_BoostThreadGroup [KERNEL.535]
 806  */
 807 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 808 {
 809     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 810 }
 811
 812 /**********************************************************************
 813  * VWin32_BoostThreadStatic [KERNEL.536]
 814  */
 815 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 816 {
 817     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 818 }
 819
 820 /**********************************************************************
 821  * SetThreadLocale [KERNEL32.671]  Sets the calling threads current locale.
 822  *
 823  * RETURNS
 824  *    Success: TRUE
 825  *    Failure: FALSE
 826  *
 827  * NOTES
 828  *  Implemented in NT only (3.1 and above according to MS
 829  */
 830 BOOL WINAPI SetThreadLocale(
 831     LCID lcid)     /* [in] Locale identifier */
 832 {
 833     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 834     return FALSE;
 835 }
 836
 837
 838 #ifdef __i386__
 839
 840 /* void WINAPI SetLastError( DWORD error ); */
 841 __ASM_GLOBAL_FUNC( SetLastError,
 842                    "movl 4(%esp),%eax\n\t"
 843                    ".byte 0x64\n\t"
 844                    "movl %eax,0x60\n\t"
 845                    "ret $4" );
 846
 847 /* DWORD WINAPI GetLastError(void); */
 848 __ASM_GLOBAL_FUNC( GetLastError, ".byte 0x64\n\tmovl 0x60,%eax\n\tret" );
 849
 850 /* DWORD WINAPI GetCurrentThreadId(void) */
 851 __ASM_GLOBAL_FUNC( GetCurrentThreadId, ".byte 0x64\n\tmovl 0x24,%eax\n\tret" );
 852
 853 #else  /* __i386__ */
 854
 855 /**********************************************************************
 856  * SetLastError [KERNEL.147] [KERNEL32.497]  Sets the last-error code.
 857  */
 858 void WINAPI SetLastError( DWORD error ) /* [in] Per-thread error code */
 859 {
 860     NtCurrentTeb()->last_error = error;
 861 }
 862
 863 /**********************************************************************
 864  * GetLastError [KERNEL.148] [KERNEL32.227]  Returns last-error code.
 865  */
 866 DWORD WINAPI GetLastError(void)
 867 {
 868     return NtCurrentTeb()->last_error;
 869 }
 870
 871 /***********************************************************************
 872  * GetCurrentThreadId [KERNEL32.201]  Returns thread identifier.
 873  */
 874 DWORD WINAPI GetCurrentThreadId(void)
 875 {
 876     return (DWORD)NtCurrentTeb()->tid;
 877 }
 878
 879 #endif  /* __i386__ */