scheduler/thread.c

   1 /*
   2  * Win32 threads
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  */
   6
   7 #include <assert.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/socket.h>
  11 #include <unistd.h>
  12 #include "wine/winbase16.h"
  13 #include "thread.h"
  14 #include "process.h"
  15 #include "task.h"
  16 #include "module.h"
  17 #include "user.h"
  18 #include "winerror.h"
  19 #include "heap.h"
  20 #include "selectors.h"
  21 #include "winnt.h"
  22 #include "server.h"
  23 #include "services.h"
  24 #include "stackframe.h"
  25 #include "debugtools.h"
  26 #include "queue.h"
  27 #include "hook.h"
  28
  29 DEFAULT_DEBUG_CHANNEL(thread)
  30
  31 /* THDB of the initial thread */
  32 static THDB initial_thdb;
  33
  34 /* Global thread list (FIXME: not thread-safe) */
  35 THDB *THREAD_First = &initial_thdb;
  36
  37 /***********************************************************************
  38  *           THREAD_IsWin16
  39  */
  40 BOOL THREAD_IsWin16( THDB *thdb )
  41 {
  42     return !thdb || !(thdb->teb.flags & TEBF_WIN32);
  43 }
  44
  45 /***********************************************************************
  46  *           THREAD_IdToTHDB
  47  *
  48  * Convert a thread id to a THDB, making sure it is valid.
  49  */
  50 THDB *THREAD_IdToTHDB( DWORD id )
  51 {
  52     THDB *thdb = THREAD_First;
  53
  54     if (!id) return THREAD_Current();
  55     while (thdb)
  56     {
  57         if ((DWORD)thdb->teb.tid == id) return thdb;
  58         thdb = thdb->next;
  59     }
  60     /* Allow task handles to be used; convert to main thread */
  61     if ( IsTask16( id ) )
  62     {
  63         TDB *pTask = (TDB *)GlobalLock16( id );
  64         if (pTask) return pTask->thdb;
  65     }
  66     SetLastError( ERROR_INVALID_PARAMETER );
  67     return NULL;
  68 }
  69
  70
  71 /***********************************************************************
  72  *           THREAD_InitTHDB
  73  *
  74  * Initialization of a newly created THDB.
  75  */
  76 static BOOL THREAD_InitTHDB( THDB *thdb, DWORD stack_size, BOOL alloc_stack16,
  77                              LPSECURITY_ATTRIBUTES sa )
  78 {
  79     DWORD old_prot;
  80
  81     /* Allocate the stack */
  82
  83     /* FIXME:
  84      * If stacksize smaller than 1 MB, allocate 1MB
  85      * (one program wanted only 10 kB, which is recommendable, but some WINE
  86      *  functions, noteably in the files subdir, push HUGE structures and
  87      *  arrays on the stack. They probably shouldn't.)
  88      * If stacksize larger than 16 MB, warn the user. (We could shrink the stack
  89      * but this could give more or less unexplainable crashes.)
  90      */
  91     if (stack_size<1024*1024)
  92         stack_size = 1024 * 1024;
  93     if (stack_size >= 16*1024*1024)
  94         WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024);
  95     thdb->stack_base = VirtualAlloc(NULL, stack_size + SIGNAL_STACK_SIZE +
  96                                     (alloc_stack16 ? 0x10000 : 0),
  97                                     MEM_COMMIT, PAGE_EXECUTE_READWRITE );
  98     if (!thdb->stack_base) goto error;
  99     /* Set a guard page at the bottom of the stack */
 100     VirtualProtect( thdb->stack_base, 1, PAGE_EXECUTE_READWRITE | PAGE_GUARD,
 101                     &old_prot );
 102     thdb->teb.stack_top   = (char *)thdb->stack_base + stack_size;
 103     thdb->teb.stack_low   = thdb->stack_base;
 104     thdb->signal_stack    = thdb->teb.stack_top;  /* start of signal stack */
 105
 106     /* Allocate the 16-bit stack selector */
 107
 108     if (alloc_stack16)
 109     {
 110         thdb->teb.stack_sel = SELECTOR_AllocBlock( thdb->teb.stack_top,
 111                                                    0x10000, SEGMENT_DATA,
 112                                                    FALSE, FALSE );
 113         if (!thdb->teb.stack_sel) goto error;
 114         thdb->cur_stack = PTR_SEG_OFF_TO_SEGPTR( thdb->teb.stack_sel,
 115                                                  0x10000 - sizeof(STACK16FRAME) );
 116         thdb->signal_stack = (char *)thdb->signal_stack + 0x10000;
 117     }
 118
 119     /* Create the thread event */
 120
 121     if (!(thdb->event = CreateEventA( NULL, FALSE, FALSE, NULL ))) goto error;
 122     thdb->event = ConvertToGlobalHandle( thdb->event );
 123     return TRUE;
 124
 125 error:
 126     if (thdb->event) CloseHandle( thdb->event );
 127     if (thdb->teb.stack_sel) SELECTOR_FreeBlock( thdb->teb.stack_sel, 1 );
 128     if (thdb->stack_base) VirtualFree( thdb->stack_base, 0, MEM_RELEASE );
 129     return FALSE;
 130 }
 131
 132
 133 /***********************************************************************
 134  *           THREAD_FreeTHDB
 135  *
 136  * Free data structures associated with a thread.
 137  * Must be called from the context of another thread.
 138  */
 139 void CALLBACK THREAD_FreeTHDB( ULONG_PTR arg )
 140 {
 141     THDB *thdb = (THDB *)arg;
 142     THDB **pptr = &THREAD_First;
 143
 144     TRACE("(%p) called\n", thdb );
 145     SERVICE_Delete( thdb->cleanup );
 146
 147     PROCESS_CallUserSignalProc( USIG_THREAD_EXIT, 0 );
 148
 149     CloseHandle( thdb->event );
 150     while (*pptr && (*pptr != thdb)) pptr = &(*pptr)->next;
 151     if (*pptr) *pptr = thdb->next;
 152
 153     /* Free the associated memory */
 154
 155     if (thdb->teb.stack_sel) SELECTOR_FreeBlock( thdb->teb.stack_sel, 1 );
 156     SELECTOR_FreeBlock( thdb->teb_sel, 1 );
 157     close( thdb->socket );
 158     VirtualFree( thdb->stack_base, 0, MEM_RELEASE );
 159     HeapFree( SystemHeap, HEAP_NO_SERIALIZE, thdb );
 160 }
 161
 162
 163 /***********************************************************************
 164  *           THREAD_CreateInitialThread
 165  *
 166  * Create the initial thread.
 167  */
 168 THDB *THREAD_CreateInitialThread( PDB *pdb, int server_fd )
 169 {
 170     initial_thdb.process         = pdb;
 171     initial_thdb.teb.except      = (void *)-1;
 172     initial_thdb.teb.self        = &initial_thdb.teb;
 173     initial_thdb.teb.flags       = /* TEBF_WIN32 */ 0;
 174     initial_thdb.teb.tls_ptr     = initial_thdb.tls_array;
 175     initial_thdb.teb.process     = pdb;
 176     initial_thdb.exit_code       = 0x103; /* STILL_ACTIVE */
 177     initial_thdb.socket          = server_fd;
 178
 179     /* Allocate the TEB selector (%fs register) */
 180
 181     if (!(initial_thdb.teb_sel = SELECTOR_AllocBlock( &initial_thdb.teb, 0x1000,
 182                                                       SEGMENT_DATA, TRUE, FALSE )))
 183     {
 184         MESSAGE("Could not allocate fs register for initial thread\n" );
 185         return NULL;
 186     }
 187     SYSDEPS_SetCurThread( &initial_thdb );
 188
 189     /* Now proceed with normal initialization */
 190
 191     if (CLIENT_InitThread()) return NULL;
 192     if (!THREAD_InitTHDB( &initial_thdb, 0, TRUE, NULL )) return NULL;
 193     return &initial_thdb;
 194 }
 195
 196
 197 /***********************************************************************
 198  *           THREAD_Create
 199  */
 200 THDB *THREAD_Create( PDB *pdb, DWORD flags, DWORD stack_size, BOOL alloc_stack16,
 201                      LPSECURITY_ATTRIBUTES sa, int *server_handle )
 202 {
 203     struct new_thread_request request;
 204     struct new_thread_reply reply = { NULL, -1 };
 205     int fd[2];
 206
 207     THDB *thdb = HeapAlloc( SystemHeap, HEAP_ZERO_MEMORY, sizeof(THDB) );
 208     if (!thdb) return NULL;
 209     thdb->process         = pdb;
 210     thdb->teb.except      = (void *)-1;
 211     thdb->teb.htask16     = pdb->task;
 212     thdb->teb.self        = &thdb->teb;
 213     thdb->teb.flags       = (pdb->flags & PDB32_WIN16_PROC)? 0 : TEBF_WIN32;
 214     thdb->teb.tls_ptr     = thdb->tls_array;
 215     thdb->teb.process     = pdb;
 216     thdb->exit_code       = 0x103; /* STILL_ACTIVE */
 217     thdb->flags           = flags;
 218     thdb->socket          = -1;
 219
 220     /* Allocate the TEB selector (%fs register) */
 221
 222     thdb->teb_sel = SELECTOR_AllocBlock( &thdb->teb, 0x1000, SEGMENT_DATA,
 223                                          TRUE, FALSE );
 224     if (!thdb->teb_sel) goto error;
 225
 226     /* Create the socket pair for server communication */
 227
 228     if (socketpair( AF_UNIX, SOCK_STREAM, 0, fd ) == -1)
 229     {
 230         SetLastError( ERROR_TOO_MANY_OPEN_FILES );  /* FIXME */
 231         goto error;
 232     }
 233     thdb->socket = fd[0];
 234     fcntl( fd[0], F_SETFD, 1 ); /* set close on exec flag */
 235
 236     /* Create the thread on the server side */
 237
 238     request.pid     = thdb->process->server_pid;
 239     request.suspend = ((thdb->flags & CREATE_SUSPENDED) != 0);
 240     request.inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
 241     CLIENT_SendRequest( REQ_NEW_THREAD, fd[1], 1, &request, sizeof(request) );
 242     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL )) goto error;
 243     thdb->teb.tid = reply.tid;
 244     *server_handle = reply.handle;
 245
 246     /* Do the rest of the initialization */
 247
 248     if (!THREAD_InitTHDB( thdb, stack_size, alloc_stack16, sa )) goto error;
 249     thdb->next = THREAD_First;
 250     THREAD_First = thdb;
 251
 252     /* Install cleanup handler */
 253
 254     thdb->cleanup = SERVICE_AddObject( *server_handle,
 255                                        THREAD_FreeTHDB, (ULONG_PTR)thdb );
 256     return thdb;
 257
 258 error:
 259     if (reply.handle != -1) CloseHandle( reply.handle );
 260     if (thdb->teb_sel) SELECTOR_FreeBlock( thdb->teb_sel, 1 );
 261     HeapFree( SystemHeap, 0, thdb );
 262     if (thdb->socket != -1) close( thdb->socket );
 263     return NULL;
 264 }
 265
 266
 267 /***********************************************************************
 268  *           THREAD_Start
 269  *
 270  * Start execution of a newly created thread. Does not return.
 271  */
 272 static void THREAD_Start(void)
 273 {
 274     THDB *thdb = THREAD_Current();
 275     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)thdb->entry_point;
 276     PROCESS_CallUserSignalProc( USIG_THREAD_INIT, 0 );
 277     PE_InitTls();
 278     MODULE_DllThreadAttach( NULL );
 279
 280     if (thdb->process->flags & PDB32_DEBUGGED) DEBUG_SendCreateThreadEvent( func );
 281
 282     ExitThread( func( thdb->entry_arg ) );
 283 }
 284
 285
 286 /***********************************************************************
 287  *           CreateThread   (KERNEL32.63)
 288  */
 289 HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, DWORD stack,
 290                             LPTHREAD_START_ROUTINE start, LPVOID param,
 291                             DWORD flags, LPDWORD id )
 292 {
 293     int handle = -1;
 294     THDB *thread = THREAD_Create( PROCESS_Current(), flags, stack, TRUE, sa, &handle );
 295     if (!thread) return INVALID_HANDLE_VALUE;
 296     thread->teb.flags  |= TEBF_WIN32;
 297     thread->entry_point = start;
 298     thread->entry_arg   = param;
 299     thread->startup     = THREAD_Start;
 300     if (SYSDEPS_SpawnThread( thread ) == -1)
 301     {
 302         CloseHandle( handle );
 303         return INVALID_HANDLE_VALUE;
 304     }
 305     if (id) *id = (DWORD)thread->teb.tid;
 306     return handle;
 307 }
 308
 309
 310 /***********************************************************************
 311  * ExitThread [KERNEL32.215]  Ends a thread
 312  *
 313  * RETURNS
 314  *    None
 315  */
 316 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 317 {
 318     MODULE_DllThreadDetach( NULL );
 319     TerminateThread( GetCurrentThread(), code );
 320 }
 321
 322
 323 /***********************************************************************
 324  * GetCurrentThread [KERNEL32.200]  Gets pseudohandle for current thread
 325  *
 326  * RETURNS
 327  *    Pseudohandle for the current thread
 328  */
 329 HANDLE WINAPI GetCurrentThread(void)
 330 {
 331     return CURRENT_THREAD_PSEUDOHANDLE;
 332 }
 333
 334
 335 /***********************************************************************
 336  * GetCurrentThreadId [KERNEL32.201]  Returns thread identifier.
 337  *
 338  * RETURNS
 339  *    Thread identifier of calling thread
 340  */
 341 DWORD WINAPI GetCurrentThreadId(void)
 342 {
 343     return (DWORD)CURRENT()->tid;
 344 }
 345
 346
 347 /**********************************************************************
 348  * GetLastError [KERNEL.148] [KERNEL32.227]  Returns last-error code.
 349  *
 350  * RETURNS
 351  *     Calling thread's last error code value.
 352  */
 353 DWORD WINAPI GetLastError(void)
 354 {
 355     THDB *thread = THREAD_Current();
 356     DWORD ret = thread->last_error;
 357     TRACE("0x%lx\n",ret);
 358     return ret;
 359 }
 360
 361
 362 /**********************************************************************
 363  * SetLastError [KERNEL.147] [KERNEL32.497]  Sets the last-error code.
 364  *
 365  * RETURNS
 366  *    None.
 367  */
 368 void WINAPI SetLastError(
 369     DWORD error) /* [in] Per-thread error code */
 370 {
 371     THDB *thread = THREAD_Current();
 372     TRACE("%p error=0x%lx\n",thread,error);
 373     thread->last_error = error;
 374 }
 375
 376
 377 /**********************************************************************
 378  * SetLastErrorEx [USER32.485]  Sets the last-error code.
 379  *
 380  * RETURNS
 381  *    None.
 382  */
 383 void WINAPI SetLastErrorEx(
 384     DWORD error, /* [in] Per-thread error code */
 385     DWORD type)  /* [in] Error type */
 386 {
 387     TRACE("(0x%08lx, 0x%08lx)\n", error,type);
 388     switch(type) {
 389         case 0:
 390             break;
 391         case SLE_ERROR:
 392         case SLE_MINORERROR:
 393         case SLE_WARNING:
 394             /* Fall through for now */
 395         default:
 396             FIXME("(error=%08lx, type=%08lx): Unhandled type\n", error,type);
 397             break;
 398     }
 399     SetLastError( error );
 400 }
 401
 402
 403 /**********************************************************************
 404  * TlsAlloc [KERNEL32.530]  Allocates a TLS index.
 405  *
 406  * Allocates a thread local storage index
 407  *
 408  * RETURNS
 409  *    Success: TLS Index
 410  *    Failure: 0xFFFFFFFF
 411  */
 412 DWORD WINAPI TlsAlloc( void )
 413 {
 414     THDB *thread = THREAD_Current();
 415     DWORD i, mask, ret = 0;
 416     DWORD *bits = thread->process->tls_bits;
 417     EnterCriticalSection( &thread->process->crit_section );
 418     if (*bits == 0xffffffff)
 419     {
 420         bits++;
 421         ret = 32;
 422         if (*bits == 0xffffffff)
 423         {
 424             LeaveCriticalSection( &thread->process->crit_section );
 425             SetLastError( ERROR_NO_MORE_ITEMS );
 426             return 0xffffffff;
 427         }
 428     }
 429     for (i = 0, mask = 1; i < 32; i++, mask <<= 1) if (!(*bits & mask)) break;
 430     *bits |= mask;
 431     LeaveCriticalSection( &thread->process->crit_section );
 432     return ret + i;
 433 }
 434
 435
 436 /**********************************************************************
 437  * TlsFree [KERNEL32.531]  Releases a TLS index.
 438  *
 439  * Releases a thread local storage index, making it available for reuse
 440  *
 441  * RETURNS
 442  *    Success: TRUE
 443  *    Failure: FALSE
 444  */
 445 BOOL WINAPI TlsFree(
 446     DWORD index) /* [in] TLS Index to free */
 447 {
 448     DWORD mask;
 449     THDB *thread = THREAD_Current();
 450     DWORD *bits = thread->process->tls_bits;
 451     if (index >= 64)
 452     {
 453         SetLastError( ERROR_INVALID_PARAMETER );
 454         return FALSE;
 455     }
 456     EnterCriticalSection( &thread->process->crit_section );
 457     if (index >= 32) bits++;
 458     mask = (1 << (index & 31));
 459     if (!(*bits & mask))  /* already free? */
 460     {
 461         LeaveCriticalSection( &thread->process->crit_section );
 462         SetLastError( ERROR_INVALID_PARAMETER );
 463         return FALSE;
 464     }
 465     *bits &= ~mask;
 466     thread->tls_array[index] = 0;
 467     /* FIXME: should zero all other thread values */
 468     LeaveCriticalSection( &thread->process->crit_section );
 469     return TRUE;
 470 }
 471
 472
 473 /**********************************************************************
 474  * TlsGetValue [KERNEL32.532]  Gets value in a thread's TLS slot
 475  *
 476  * RETURNS
 477  *    Success: Value stored in calling thread's TLS slot for index
 478  *    Failure: 0 and GetLastError returns NO_ERROR
 479  */
 480 LPVOID WINAPI TlsGetValue(
 481     DWORD index) /* [in] TLS index to retrieve value for */
 482 {
 483     THDB *thread = THREAD_Current();
 484     if (index >= 64)
 485     {
 486         SetLastError( ERROR_INVALID_PARAMETER );
 487         return NULL;
 488     }
 489     SetLastError( ERROR_SUCCESS );
 490     return thread->tls_array[index];
 491 }
 492
 493
 494 /**********************************************************************
 495  * TlsSetValue [KERNEL32.533]  Stores a value in the thread's TLS slot.
 496  *
 497  * RETURNS
 498  *    Success: TRUE
 499  *    Failure: FALSE
 500  */
 501 BOOL WINAPI TlsSetValue(
 502     DWORD index,  /* [in] TLS index to set value for */
 503     LPVOID value) /* [in] Value to be stored */
 504 {
 505     THDB *thread = THREAD_Current();
 506     if (index >= 64)
 507     {
 508         SetLastError( ERROR_INVALID_PARAMETER );
 509         return FALSE;
 510     }
 511     thread->tls_array[index] = value;
 512     return TRUE;
 513 }
 514
 515
 516 /***********************************************************************
 517  * SetThreadContext [KERNEL32.670]  Sets context of thread.
 518  *
 519  * RETURNS
 520  *    Success: TRUE
 521  *    Failure: FALSE
 522  */
 523 BOOL WINAPI SetThreadContext(
 524     HANDLE handle,  /* [in]  Handle to thread with context */
 525     CONTEXT *context) /* [out] Address of context structure */
 526 {
 527     FIXME("not implemented\n" );
 528     return TRUE;
 529 }
 530
 531 /***********************************************************************
 532  * GetThreadContext [KERNEL32.294]  Retrieves context of thread.
 533  *
 534  * RETURNS
 535  *    Success: TRUE
 536  *    Failure: FALSE
 537  */
 538 BOOL WINAPI GetThreadContext(
 539     HANDLE handle,  /* [in]  Handle to thread with context */
 540     CONTEXT *context) /* [out] Address of context structure */
 541 {
 542     WORD cs, ds;
 543
 544     FIXME("returning dummy info\n" );
 545
 546     /* make up some plausible values for segment registers */
 547     GET_CS(cs);
 548     GET_DS(ds);
 549     context->SegCs   = cs;
 550     context->SegDs   = ds;
 551     context->SegEs   = ds;
 552     context->SegGs   = ds;
 553     context->SegSs   = ds;
 554     context->SegFs   = ds;
 555     return TRUE;
 556 }
 557
 558
 559 /**********************************************************************
 560  * GetThreadPriority [KERNEL32.296]  Returns priority for thread.
 561  *
 562  * RETURNS
 563  *    Success: Thread's priority level.
 564  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 565  */
 566 INT WINAPI GetThreadPriority(
 567     HANDLE hthread) /* [in] Handle to thread */
 568 {
 569     struct get_thread_info_request req;
 570     struct get_thread_info_reply reply;
 571     req.handle = hthread;
 572     CLIENT_SendRequest( REQ_GET_THREAD_INFO, -1, 1, &req, sizeof(req) );
 573     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL ))
 574         return THREAD_PRIORITY_ERROR_RETURN;
 575     return reply.priority;
 576 }
 577
 578
 579 /**********************************************************************
 580  * SetThreadPriority [KERNEL32.514]  Sets priority for thread.
 581  *
 582  * RETURNS
 583  *    Success: TRUE
 584  *    Failure: FALSE
 585  */
 586 BOOL WINAPI SetThreadPriority(
 587     HANDLE hthread, /* [in] Handle to thread */
 588     INT priority)   /* [in] Thread priority level */
 589 {
 590     struct set_thread_info_request req;
 591     req.handle   = hthread;
 592     req.priority = priority;
 593     req.mask     = SET_THREAD_INFO_PRIORITY;
 594     CLIENT_SendRequest( REQ_SET_THREAD_INFO, -1, 1, &req, sizeof(req) );
 595     return !CLIENT_WaitReply( NULL, NULL, 0 );
 596 }
 597
 598
 599 /**********************************************************************
 600  *           SetThreadAffinityMask   (KERNEL32.669)
 601  */
 602 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 603 {
 604     struct set_thread_info_request req;
 605     req.handle   = hThread;
 606     req.affinity = dwThreadAffinityMask;
 607     req.mask     = SET_THREAD_INFO_AFFINITY;
 608     CLIENT_SendRequest( REQ_SET_THREAD_INFO, -1, 1, &req, sizeof(req) );
 609     if (CLIENT_WaitReply( NULL, NULL, 0 )) return 0;
 610     return 1;  /* FIXME: should return previous value */
 611 }
 612
 613
 614 /**********************************************************************
 615  * TerminateThread [KERNEL32.685]  Terminates a thread
 616  *
 617  * RETURNS
 618  *    Success: TRUE
 619  *    Failure: FALSE
 620  */
 621 BOOL WINAPI TerminateThread(
 622     HANDLE handle, /* [in] Handle to thread */
 623     DWORD exitcode)  /* [in] Exit code for thread */
 624 {
 625     struct terminate_thread_request req;
 626     req.handle    = handle;
 627     req.exit_code = exitcode;
 628     CLIENT_SendRequest( REQ_TERMINATE_THREAD, -1, 1, &req, sizeof(req) );
 629     return !CLIENT_WaitReply( NULL, NULL, 0 );
 630 }
 631
 632
 633 /**********************************************************************
 634  * GetExitCodeThread [KERNEL32.???]  Gets termination status of thread.
 635  *
 636  * RETURNS
 637  *    Success: TRUE
 638  *    Failure: FALSE
 639  */
 640 BOOL WINAPI GetExitCodeThread(
 641     HANDLE hthread, /* [in]  Handle to thread */
 642     LPDWORD exitcode) /* [out] Address to receive termination status */
 643 {
 644     struct get_thread_info_request req;
 645     struct get_thread_info_reply reply;
 646     req.handle = hthread;
 647     CLIENT_SendRequest( REQ_GET_THREAD_INFO, -1, 1, &req, sizeof(req) );
 648     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL )) return FALSE;
 649     if (exitcode) *exitcode = reply.exit_code;
 650     return TRUE;
 651 }
 652
 653
 654 /**********************************************************************
 655  * ResumeThread [KERNEL32.587]  Resumes a thread.
 656  *
 657  * Decrements a thread's suspend count.  When count is zero, the
 658  * execution of the thread is resumed.
 659  *
 660  * RETURNS
 661  *    Success: Previous suspend count
 662  *    Failure: 0xFFFFFFFF
 663  *    Already running: 0
 664  */
 665 DWORD WINAPI ResumeThread(
 666     HANDLE hthread) /* [in] Identifies thread to restart */
 667 {
 668     struct resume_thread_request req;
 669     struct resume_thread_reply reply;
 670     req.handle = hthread;
 671     CLIENT_SendRequest( REQ_RESUME_THREAD, -1, 1, &req, sizeof(req) );
 672     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL )) return 0xffffffff;
 673     return reply.count;
 674 }
 675
 676
 677 /**********************************************************************
 678  * SuspendThread [KERNEL32.681]  Suspends a thread.
 679  *
 680  * RETURNS
 681  *    Success: Previous suspend count
 682  *    Failure: 0xFFFFFFFF
 683  */
 684 DWORD WINAPI SuspendThread(
 685     HANDLE hthread) /* [in] Handle to the thread */
 686 {
 687     struct suspend_thread_request req;
 688     struct suspend_thread_reply reply;
 689     req.handle = hthread;
 690     CLIENT_SendRequest( REQ_SUSPEND_THREAD, -1, 1, &req, sizeof(req) );
 691     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL )) return 0xffffffff;
 692     return reply.count;
 693 }
 694
 695
 696 /***********************************************************************
 697  *              QueueUserAPC  (KERNEL32.566)
 698  */
 699 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 700 {
 701     struct queue_apc_request req;
 702     req.handle = hthread;
 703     req.func   = func;
 704     req.param  = (void *)data;
 705     CLIENT_SendRequest( REQ_QUEUE_APC, -1, 1, &req, sizeof(req) );
 706     return !CLIENT_WaitReply( NULL, NULL, 0 );
 707 }
 708
 709
 710 /**********************************************************************
 711  * GetThreadTimes [KERNEL32.???]  Obtains timing information.
 712  *
 713  * NOTES
 714  *    What are the fields where these values are stored?
 715  *
 716  * RETURNS
 717  *    Success: TRUE
 718  *    Failure: FALSE
 719  */
 720 BOOL WINAPI GetThreadTimes(
 721     HANDLE thread,         /* [in]  Specifies the thread of interest */
 722     LPFILETIME creationtime, /* [out] When the thread was created */
 723     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 724     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 725     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 726 {
 727     FIXME("(0x%08x): stub\n",thread);
 728     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 729     return FALSE;
 730 }
 731
 732
 733 /**********************************************************************
 734  * AttachThreadInput [KERNEL32.8]  Attaches input of 1 thread to other
 735  *
 736  * Attaches the input processing mechanism of one thread to that of
 737  * another thread.
 738  *
 739  * RETURNS
 740  *    Success: TRUE
 741  *    Failure: FALSE
 742  *
 743  * TODO:
 744  *    1. Reset the Key State (currenly per thread key state is not maintained)
 745  */
 746 BOOL WINAPI AttachThreadInput(
 747     DWORD idAttach,   /* [in] Thread to attach */
 748     DWORD idAttachTo, /* [in] Thread to attach to */
 749     BOOL fAttach)   /* [in] Attach or detach */
 750 {
 751     MESSAGEQUEUE *pSrcMsgQ = 0, *pTgtMsgQ = 0;
 752     BOOL16 bRet = 0;
 753
 754     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 755
 756     /* A thread cannot attach to itself */
 757     if ( idAttach == idAttachTo )
 758         goto CLEANUP;
 759
 760     /* According to the docs this method should fail if a
 761      * "Journal record" hook is installed. (attaches all input queues together)
 762      */
 763     if ( HOOK_IsHooked( WH_JOURNALRECORD ) )
 764         goto CLEANUP;
 765
 766     /* Retrieve message queues corresponding to the thread id's */
 767     pTgtMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttach ) );
 768     pSrcMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttachTo ) );
 769
 770     /* Ensure we have message queues and that Src and Tgt threads
 771      * are not system threads.
 772      */
 773     if ( !pSrcMsgQ || !pTgtMsgQ || !pSrcMsgQ->pQData || !pTgtMsgQ->pQData )
 774         goto CLEANUP;
 775
 776     if (fAttach)   /* Attach threads */
 777     {
 778         /* Only attach if currently detached  */
 779         if ( pTgtMsgQ->pQData != pSrcMsgQ->pQData )
 780         {
 781             /* First release the target threads perQData */
 782             PERQDATA_Release( pTgtMsgQ->pQData );
 783
 784             /* Share a reference to the source threads perQDATA */
 785             PERQDATA_Addref( pSrcMsgQ->pQData );
 786             pTgtMsgQ->pQData = pSrcMsgQ->pQData;
 787         }
 788     }
 789     else    /* Detach threads */
 790     {
 791         /* Only detach if currently attached */
 792         if ( pTgtMsgQ->pQData == pSrcMsgQ->pQData )
 793         {
 794             /* First release the target threads perQData */
 795             PERQDATA_Release( pTgtMsgQ->pQData );
 796
 797             /* Give the target thread its own private perQDATA once more */
 798             pTgtMsgQ->pQData = PERQDATA_CreateInstance();
 799         }
 800     }
 801
 802     /* TODO: Reset the Key State */
 803
 804     bRet = 1;      /* Success */
 805
 806 CLEANUP:
 807
 808     /* Unlock the queues before returning */
 809     if ( pSrcMsgQ )
 810         QUEUE_Unlock( pSrcMsgQ );
 811     if ( pTgtMsgQ )
 812         QUEUE_Unlock( pTgtMsgQ );
 813
 814     return bRet;
 815 }
 816
 817 /**********************************************************************
 818  * VWin32_BoostThreadGroup [KERNEL.535]
 819  */
 820 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 821 {
 822     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 823 }
 824
 825 /**********************************************************************
 826  * VWin32_BoostThreadStatic [KERNEL.536]
 827  */
 828 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 829 {
 830     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 831 }
 832
 833 /**********************************************************************
 834  * SetThreadLocale [KERNEL32.671]  Sets the calling threads current locale.
 835  *
 836  * RETURNS
 837  *    Success: TRUE
 838  *    Failure: FALSE
 839  *
 840  * NOTES
 841  *  Implemented in NT only (3.1 and above according to MS
 842  */
 843 BOOL WINAPI SetThreadLocale(
 844     LCID lcid)     /* [in] Locale identifier */
 845 {
 846     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 847     return FALSE;
 848 }