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 #ifndef __i386__
  32 THDB *pCurrentThread;
  33 #endif
  34
  35 /* Is threading code initialized? */
  36 BOOL THREAD_InitDone = FALSE;
  37
  38 /* THDB of the initial thread */
  39 static THDB initial_thdb;
  40
  41 /* Global thread list (FIXME: not thread-safe) */
  42 THDB *THREAD_First = &initial_thdb;
  43
  44 /***********************************************************************
  45  *           THREAD_Current
  46  *
  47  * Return the current thread THDB pointer.
  48  */
  49 THDB *THREAD_Current(void)
  50 {
  51     if (!THREAD_InitDone) return NULL;
  52     return (THDB *)((char *)NtCurrentTeb() - (int)&((THDB *)0)->teb);
  53 }
  54
  55 /***********************************************************************
  56  *           THREAD_IsWin16
  57  */
  58 BOOL THREAD_IsWin16( THDB *thdb )
  59 {
  60     return !thdb || !(thdb->teb.flags & TEBF_WIN32);
  61 }
  62
  63 /***********************************************************************
  64  *           THREAD_IdToTHDB
  65  *
  66  * Convert a thread id to a THDB, making sure it is valid.
  67  */
  68 THDB *THREAD_IdToTHDB( DWORD id )
  69 {
  70     THDB *thdb = THREAD_First;
  71
  72     if (!id) return THREAD_Current();
  73     while (thdb)
  74     {
  75         if ((DWORD)thdb->server_tid == id) return thdb;
  76         thdb = thdb->next;
  77     }
  78     /* Allow task handles to be used; convert to main thread */
  79     if ( IsTask16( id ) )
  80     {
  81         TDB *pTask = (TDB *)GlobalLock16( id );
  82         if (pTask) return pTask->thdb;
  83     }
  84     SetLastError( ERROR_INVALID_PARAMETER );
  85     return NULL;
  86 }
  87
  88
  89 /***********************************************************************
  90  *           THREAD_InitTHDB
  91  *
  92  * Initialization of a newly created THDB.
  93  */
  94 static BOOL THREAD_InitTHDB( THDB *thdb, DWORD stack_size, BOOL alloc_stack16,
  95                              LPSECURITY_ATTRIBUTES sa )
  96 {
  97     DWORD old_prot;
  98
  99     /* Allocate the stack */
 100
 101     /* FIXME:
 102      * If stacksize smaller than 1 MB, allocate 1MB
 103      * (one program wanted only 10 kB, which is recommendable, but some WINE
 104      *  functions, noteably in the files subdir, push HUGE structures and
 105      *  arrays on the stack. They probably shouldn't.)
 106      * If stacksize larger than 16 MB, warn the user. (We could shrink the stack
 107      * but this could give more or less unexplainable crashes.)
 108      */
 109     if (stack_size<1024*1024)
 110         stack_size = 1024 * 1024;
 111     if (stack_size >= 16*1024*1024)
 112         WARN("Thread stack size is %ld MB.\n",stack_size/1024/1024);
 113     thdb->stack_base = VirtualAlloc(NULL, stack_size + SIGNAL_STACK_SIZE +
 114                                     (alloc_stack16 ? 0x10000 : 0),
 115                                     MEM_COMMIT, PAGE_EXECUTE_READWRITE );
 116     if (!thdb->stack_base) goto error;
 117     /* Set a guard page at the bottom of the stack */
 118     VirtualProtect( thdb->stack_base, 1, PAGE_EXECUTE_READWRITE | PAGE_GUARD,
 119                     &old_prot );
 120     thdb->teb.stack_top   = (char *)thdb->stack_base + stack_size;
 121     thdb->teb.stack_low   = thdb->stack_base;
 122     thdb->signal_stack    = thdb->teb.stack_top;  /* start of signal stack */
 123
 124     /* Allocate the 16-bit stack selector */
 125
 126     if (alloc_stack16)
 127     {
 128         thdb->teb.stack_sel = SELECTOR_AllocBlock( thdb->teb.stack_top,
 129                                                    0x10000, SEGMENT_DATA,
 130                                                    FALSE, FALSE );
 131         if (!thdb->teb.stack_sel) goto error;
 132         thdb->cur_stack = PTR_SEG_OFF_TO_SEGPTR( thdb->teb.stack_sel,
 133                                                  0x10000 - sizeof(STACK16FRAME) );
 134         thdb->signal_stack = (char *)thdb->signal_stack + 0x10000;
 135     }
 136
 137     /* Create the thread event */
 138
 139     if (!(thdb->event = CreateEventA( NULL, FALSE, FALSE, NULL ))) goto error;
 140     thdb->event = ConvertToGlobalHandle( thdb->event );
 141     return TRUE;
 142
 143 error:
 144     if (thdb->event) CloseHandle( thdb->event );
 145     if (thdb->teb.stack_sel) SELECTOR_FreeBlock( thdb->teb.stack_sel, 1 );
 146     if (thdb->stack_base) VirtualFree( thdb->stack_base, 0, MEM_RELEASE );
 147     return FALSE;
 148 }
 149
 150
 151 /***********************************************************************
 152  *           THREAD_FreeTHDB
 153  *
 154  * Free data structures associated with a thread.
 155  * Must be called from the context of another thread.
 156  */
 157 void CALLBACK THREAD_FreeTHDB( ULONG_PTR arg )
 158 {
 159     THDB *thdb = (THDB *)arg;
 160     THDB **pptr = &THREAD_First;
 161
 162     TRACE("(%p) called\n", thdb );
 163     SERVICE_Delete( thdb->cleanup );
 164
 165     PROCESS_CallUserSignalProc( USIG_THREAD_EXIT, 0, 0 );
 166
 167     CloseHandle( thdb->event );
 168     while (*pptr && (*pptr != thdb)) pptr = &(*pptr)->next;
 169     if (*pptr) *pptr = thdb->next;
 170
 171     /* Free the associated memory */
 172
 173     if (thdb->teb.stack_sel) SELECTOR_FreeBlock( thdb->teb.stack_sel, 1 );
 174     SELECTOR_FreeBlock( thdb->teb_sel, 1 );
 175     close( thdb->socket );
 176     VirtualFree( thdb->stack_base, 0, MEM_RELEASE );
 177     HeapFree( SystemHeap, HEAP_NO_SERIALIZE, thdb );
 178 }
 179
 180
 181 /***********************************************************************
 182  *           THREAD_CreateInitialThread
 183  *
 184  * Create the initial thread.
 185  */
 186 THDB *THREAD_CreateInitialThread( PDB *pdb, int server_fd )
 187 {
 188     initial_thdb.process         = pdb;
 189     initial_thdb.teb.except      = (void *)-1;
 190     initial_thdb.teb.self        = &initial_thdb.teb;
 191     initial_thdb.teb.flags       = /* TEBF_WIN32 */ 0;
 192     initial_thdb.teb.tls_ptr     = initial_thdb.tls_array;
 193     initial_thdb.teb.process     = pdb;
 194     initial_thdb.exit_code       = 0x103; /* STILL_ACTIVE */
 195     initial_thdb.socket          = server_fd;
 196
 197     /* Allocate the TEB selector (%fs register) */
 198
 199     if (!(initial_thdb.teb_sel = SELECTOR_AllocBlock( &initial_thdb.teb, 0x1000,
 200                                                       SEGMENT_DATA, TRUE, FALSE )))
 201     {
 202         MESSAGE("Could not allocate fs register for initial thread\n" );
 203         return NULL;
 204     }
 205     SET_CUR_THREAD( &initial_thdb );
 206     THREAD_InitDone = TRUE;
 207
 208     /* Now proceed with normal initialization */
 209
 210     if (CLIENT_InitThread()) return NULL;
 211     if (!THREAD_InitTHDB( &initial_thdb, 0, TRUE, NULL )) return NULL;
 212     return &initial_thdb;
 213 }
 214
 215
 216 /***********************************************************************
 217  *           THREAD_Create
 218  */
 219 THDB *THREAD_Create( PDB *pdb, DWORD flags, DWORD stack_size, BOOL alloc_stack16,
 220                      LPSECURITY_ATTRIBUTES sa, int *server_handle )
 221 {
 222     struct new_thread_request request;
 223     struct new_thread_reply reply = { NULL, -1 };
 224     int fd[2];
 225
 226     THDB *thdb = HeapAlloc( SystemHeap, HEAP_ZERO_MEMORY, sizeof(THDB) );
 227     if (!thdb) return NULL;
 228     thdb->process         = pdb;
 229     thdb->teb.except      = (void *)-1;
 230     thdb->teb.htask16     = pdb->task;
 231     thdb->teb.self        = &thdb->teb;
 232     thdb->teb.flags       = (pdb->flags & PDB32_WIN16_PROC)? 0 : TEBF_WIN32;
 233     thdb->teb.tls_ptr     = thdb->tls_array;
 234     thdb->teb.process     = pdb;
 235     thdb->exit_code       = 0x103; /* STILL_ACTIVE */
 236     thdb->flags           = flags;
 237     thdb->socket          = -1;
 238
 239     /* Allocate the TEB selector (%fs register) */
 240
 241     thdb->teb_sel = SELECTOR_AllocBlock( &thdb->teb, 0x1000, SEGMENT_DATA,
 242                                          TRUE, FALSE );
 243     if (!thdb->teb_sel) goto error;
 244
 245     /* Create the socket pair for server communication */
 246
 247     if (socketpair( AF_UNIX, SOCK_STREAM, 0, fd ) == -1)
 248     {
 249         SetLastError( ERROR_TOO_MANY_OPEN_FILES );  /* FIXME */
 250         goto error;
 251     }
 252     thdb->socket = fd[0];
 253     fcntl( fd[0], F_SETFD, 1 ); /* set close on exec flag */
 254
 255     /* Create the thread on the server side */
 256
 257     request.pid     = thdb->process->server_pid;
 258     request.suspend = ((thdb->flags & CREATE_SUSPENDED) != 0);
 259     request.inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
 260     CLIENT_SendRequest( REQ_NEW_THREAD, fd[1], 1, &request, sizeof(request) );
 261     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL )) goto error;
 262     thdb->server_tid = reply.tid;
 263     *server_handle = reply.handle;
 264
 265     /* Do the rest of the initialization */
 266
 267     if (!THREAD_InitTHDB( thdb, stack_size, alloc_stack16, sa )) goto error;
 268     thdb->next = THREAD_First;
 269     THREAD_First = thdb;
 270
 271     /* Install cleanup handler */
 272
 273     thdb->cleanup = SERVICE_AddObject( *server_handle,
 274                                        THREAD_FreeTHDB, (ULONG_PTR)thdb );
 275     return thdb;
 276
 277 error:
 278     if (reply.handle != -1) CloseHandle( reply.handle );
 279     if (thdb->teb_sel) SELECTOR_FreeBlock( thdb->teb_sel, 1 );
 280     HeapFree( SystemHeap, 0, thdb );
 281     if (thdb->socket != -1) close( thdb->socket );
 282     return NULL;
 283 }
 284
 285
 286 /***********************************************************************
 287  *           THREAD_Start
 288  *
 289  * Start execution of a newly created thread. Does not return.
 290  */
 291 static void THREAD_Start(void)
 292 {
 293     THDB *thdb = THREAD_Current();
 294     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)thdb->entry_point;
 295     PROCESS_CallUserSignalProc( USIG_THREAD_INIT, 0, 0 );
 296     PE_InitTls();
 297     MODULE_DllThreadAttach( NULL );
 298
 299     if (thdb->process->flags & PDB32_DEBUGGED) DEBUG_SendCreateThreadEvent( func );
 300
 301     ExitThread( func( thdb->entry_arg ) );
 302 }
 303
 304
 305 /***********************************************************************
 306  *           CreateThread   (KERNEL32.63)
 307  */
 308 HANDLE WINAPI CreateThread( SECURITY_ATTRIBUTES *sa, DWORD stack,
 309                             LPTHREAD_START_ROUTINE start, LPVOID param,
 310                             DWORD flags, LPDWORD id )
 311 {
 312     int handle = -1;
 313     THDB *thread = THREAD_Create( PROCESS_Current(), flags, stack, TRUE, sa, &handle );
 314     if (!thread) return INVALID_HANDLE_VALUE;
 315     thread->teb.flags  |= TEBF_WIN32;
 316     thread->entry_point = start;
 317     thread->entry_arg   = param;
 318     thread->startup     = THREAD_Start;
 319     if (SYSDEPS_SpawnThread( thread ) == -1)
 320     {
 321         CloseHandle( handle );
 322         return INVALID_HANDLE_VALUE;
 323     }
 324     if (id) *id = (DWORD)thread->server_tid;
 325     return handle;
 326 }
 327
 328
 329 /***********************************************************************
 330  * ExitThread [KERNEL32.215]  Ends a thread
 331  *
 332  * RETURNS
 333  *    None
 334  */
 335 void WINAPI ExitThread( DWORD code ) /* [in] Exit code for this thread */
 336 {
 337     MODULE_DllThreadDetach( NULL );
 338     TerminateThread( GetCurrentThread(), code );
 339 }
 340
 341
 342 /***********************************************************************
 343  * GetCurrentThread [KERNEL32.200]  Gets pseudohandle for current thread
 344  *
 345  * RETURNS
 346  *    Pseudohandle for the current thread
 347  */
 348 HANDLE WINAPI GetCurrentThread(void)
 349 {
 350     return CURRENT_THREAD_PSEUDOHANDLE;
 351 }
 352
 353
 354 /***********************************************************************
 355  * GetCurrentThreadId [KERNEL32.201]  Returns thread identifier.
 356  *
 357  * RETURNS
 358  *    Thread identifier of calling thread
 359  */
 360 DWORD WINAPI GetCurrentThreadId(void)
 361 {
 362     THDB *thdb = THREAD_Current();
 363     assert( thdb );
 364     assert( thdb->server_tid );
 365     return (DWORD)thdb->server_tid;
 366 }
 367
 368
 369 /**********************************************************************
 370  * GetLastError [KERNEL.148] [KERNEL32.227]  Returns last-error code.
 371  *
 372  * RETURNS
 373  *     Calling thread's last error code value.
 374  */
 375 DWORD WINAPI GetLastError(void)
 376 {
 377     THDB *thread = THREAD_Current();
 378     DWORD ret = thread->last_error;
 379     TRACE("0x%lx\n",ret);
 380     return ret;
 381 }
 382
 383
 384 /**********************************************************************
 385  * SetLastError [KERNEL.147] [KERNEL32.497]  Sets the last-error code.
 386  *
 387  * RETURNS
 388  *    None.
 389  */
 390 void WINAPI SetLastError(
 391     DWORD error) /* [in] Per-thread error code */
 392 {
 393     THDB *thread = THREAD_Current();
 394     /* This one must work before we have a thread (FIXME) */
 395
 396     TRACE("%p error=0x%lx\n",thread,error);
 397
 398     if (thread)
 399       thread->last_error = error;
 400 }
 401
 402
 403 /**********************************************************************
 404  * SetLastErrorEx [USER32.485]  Sets the last-error code.
 405  *
 406  * RETURNS
 407  *    None.
 408  */
 409 void WINAPI SetLastErrorEx(
 410     DWORD error, /* [in] Per-thread error code */
 411     DWORD type)  /* [in] Error type */
 412 {
 413     TRACE("(0x%08lx, 0x%08lx)\n", error,type);
 414     switch(type) {
 415         case 0:
 416             break;
 417         case SLE_ERROR:
 418         case SLE_MINORERROR:
 419         case SLE_WARNING:
 420             /* Fall through for now */
 421         default:
 422             FIXME("(error=%08lx, type=%08lx): Unhandled type\n", error,type);
 423             break;
 424     }
 425     SetLastError( error );
 426 }
 427
 428
 429 /**********************************************************************
 430  * TlsAlloc [KERNEL32.530]  Allocates a TLS index.
 431  *
 432  * Allocates a thread local storage index
 433  *
 434  * RETURNS
 435  *    Success: TLS Index
 436  *    Failure: 0xFFFFFFFF
 437  */
 438 DWORD WINAPI TlsAlloc( void )
 439 {
 440     THDB *thread = THREAD_Current();
 441     DWORD i, mask, ret = 0;
 442     DWORD *bits = thread->process->tls_bits;
 443     EnterCriticalSection( &thread->process->crit_section );
 444     if (*bits == 0xffffffff)
 445     {
 446         bits++;
 447         ret = 32;
 448         if (*bits == 0xffffffff)
 449         {
 450             LeaveCriticalSection( &thread->process->crit_section );
 451             SetLastError( ERROR_NO_MORE_ITEMS );
 452             return 0xffffffff;
 453         }
 454     }
 455     for (i = 0, mask = 1; i < 32; i++, mask <<= 1) if (!(*bits & mask)) break;
 456     *bits |= mask;
 457     LeaveCriticalSection( &thread->process->crit_section );
 458     return ret + i;
 459 }
 460
 461
 462 /**********************************************************************
 463  * TlsFree [KERNEL32.531]  Releases a TLS index.
 464  *
 465  * Releases a thread local storage index, making it available for reuse
 466  *
 467  * RETURNS
 468  *    Success: TRUE
 469  *    Failure: FALSE
 470  */
 471 BOOL WINAPI TlsFree(
 472     DWORD index) /* [in] TLS Index to free */
 473 {
 474     DWORD mask;
 475     THDB *thread = THREAD_Current();
 476     DWORD *bits = thread->process->tls_bits;
 477     if (index >= 64)
 478     {
 479         SetLastError( ERROR_INVALID_PARAMETER );
 480         return FALSE;
 481     }
 482     EnterCriticalSection( &thread->process->crit_section );
 483     if (index >= 32) bits++;
 484     mask = (1 << (index & 31));
 485     if (!(*bits & mask))  /* already free? */
 486     {
 487         LeaveCriticalSection( &thread->process->crit_section );
 488         SetLastError( ERROR_INVALID_PARAMETER );
 489         return FALSE;
 490     }
 491     *bits &= ~mask;
 492     thread->tls_array[index] = 0;
 493     /* FIXME: should zero all other thread values */
 494     LeaveCriticalSection( &thread->process->crit_section );
 495     return TRUE;
 496 }
 497
 498
 499 /**********************************************************************
 500  * TlsGetValue [KERNEL32.532]  Gets value in a thread's TLS slot
 501  *
 502  * RETURNS
 503  *    Success: Value stored in calling thread's TLS slot for index
 504  *    Failure: 0 and GetLastError returns NO_ERROR
 505  */
 506 LPVOID WINAPI TlsGetValue(
 507     DWORD index) /* [in] TLS index to retrieve value for */
 508 {
 509     THDB *thread = THREAD_Current();
 510     if (index >= 64)
 511     {
 512         SetLastError( ERROR_INVALID_PARAMETER );
 513         return NULL;
 514     }
 515     SetLastError( ERROR_SUCCESS );
 516     return thread->tls_array[index];
 517 }
 518
 519
 520 /**********************************************************************
 521  * TlsSetValue [KERNEL32.533]  Stores a value in the thread's TLS slot.
 522  *
 523  * RETURNS
 524  *    Success: TRUE
 525  *    Failure: FALSE
 526  */
 527 BOOL WINAPI TlsSetValue(
 528     DWORD index,  /* [in] TLS index to set value for */
 529     LPVOID value) /* [in] Value to be stored */
 530 {
 531     THDB *thread = THREAD_Current();
 532     if (index >= 64)
 533     {
 534         SetLastError( ERROR_INVALID_PARAMETER );
 535         return FALSE;
 536     }
 537     thread->tls_array[index] = value;
 538     return TRUE;
 539 }
 540
 541
 542 /***********************************************************************
 543  * SetThreadContext [KERNEL32.670]  Sets context of thread.
 544  *
 545  * RETURNS
 546  *    Success: TRUE
 547  *    Failure: FALSE
 548  */
 549 BOOL WINAPI SetThreadContext(
 550     HANDLE handle,  /* [in]  Handle to thread with context */
 551     CONTEXT *context) /* [out] Address of context structure */
 552 {
 553     FIXME("not implemented\n" );
 554     return TRUE;
 555 }
 556
 557 /***********************************************************************
 558  * GetThreadContext [KERNEL32.294]  Retrieves context of thread.
 559  *
 560  * RETURNS
 561  *    Success: TRUE
 562  *    Failure: FALSE
 563  */
 564 BOOL WINAPI GetThreadContext(
 565     HANDLE handle,  /* [in]  Handle to thread with context */
 566     CONTEXT *context) /* [out] Address of context structure */
 567 {
 568     WORD cs, ds;
 569
 570     FIXME("returning dummy info\n" );
 571
 572     /* make up some plausible values for segment registers */
 573     GET_CS(cs);
 574     GET_DS(ds);
 575     context->SegCs   = cs;
 576     context->SegDs   = ds;
 577     context->SegEs   = ds;
 578     context->SegGs   = ds;
 579     context->SegSs   = ds;
 580     context->SegFs   = ds;
 581     return TRUE;
 582 }
 583
 584
 585 /**********************************************************************
 586  * GetThreadPriority [KERNEL32.296]  Returns priority for thread.
 587  *
 588  * RETURNS
 589  *    Success: Thread's priority level.
 590  *    Failure: THREAD_PRIORITY_ERROR_RETURN
 591  */
 592 INT WINAPI GetThreadPriority(
 593     HANDLE hthread) /* [in] Handle to thread */
 594 {
 595     struct get_thread_info_request req;
 596     struct get_thread_info_reply reply;
 597     req.handle = hthread;
 598     CLIENT_SendRequest( REQ_GET_THREAD_INFO, -1, 1, &req, sizeof(req) );
 599     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL ))
 600         return THREAD_PRIORITY_ERROR_RETURN;
 601     return reply.priority;
 602 }
 603
 604
 605 /**********************************************************************
 606  * SetThreadPriority [KERNEL32.514]  Sets priority for thread.
 607  *
 608  * RETURNS
 609  *    Success: TRUE
 610  *    Failure: FALSE
 611  */
 612 BOOL WINAPI SetThreadPriority(
 613     HANDLE hthread, /* [in] Handle to thread */
 614     INT priority)   /* [in] Thread priority level */
 615 {
 616     struct set_thread_info_request req;
 617     req.handle   = hthread;
 618     req.priority = priority;
 619     req.mask     = SET_THREAD_INFO_PRIORITY;
 620     CLIENT_SendRequest( REQ_SET_THREAD_INFO, -1, 1, &req, sizeof(req) );
 621     return !CLIENT_WaitReply( NULL, NULL, 0 );
 622 }
 623
 624
 625 /**********************************************************************
 626  *           SetThreadAffinityMask   (KERNEL32.669)
 627  */
 628 DWORD WINAPI SetThreadAffinityMask( HANDLE hThread, DWORD dwThreadAffinityMask )
 629 {
 630     struct set_thread_info_request req;
 631     req.handle   = hThread;
 632     req.affinity = dwThreadAffinityMask;
 633     req.mask     = SET_THREAD_INFO_AFFINITY;
 634     CLIENT_SendRequest( REQ_SET_THREAD_INFO, -1, 1, &req, sizeof(req) );
 635     if (CLIENT_WaitReply( NULL, NULL, 0 )) return 0;
 636     return 1;  /* FIXME: should return previous value */
 637 }
 638
 639
 640 /**********************************************************************
 641  * TerminateThread [KERNEL32.685]  Terminates a thread
 642  *
 643  * RETURNS
 644  *    Success: TRUE
 645  *    Failure: FALSE
 646  */
 647 BOOL WINAPI TerminateThread(
 648     HANDLE handle, /* [in] Handle to thread */
 649     DWORD exitcode)  /* [in] Exit code for thread */
 650 {
 651     struct terminate_thread_request req;
 652     req.handle    = handle;
 653     req.exit_code = exitcode;
 654     CLIENT_SendRequest( REQ_TERMINATE_THREAD, -1, 1, &req, sizeof(req) );
 655     return !CLIENT_WaitReply( NULL, NULL, 0 );
 656 }
 657
 658
 659 /**********************************************************************
 660  * GetExitCodeThread [KERNEL32.???]  Gets termination status of thread.
 661  *
 662  * RETURNS
 663  *    Success: TRUE
 664  *    Failure: FALSE
 665  */
 666 BOOL WINAPI GetExitCodeThread(
 667     HANDLE hthread, /* [in]  Handle to thread */
 668     LPDWORD exitcode) /* [out] Address to receive termination status */
 669 {
 670     struct get_thread_info_request req;
 671     struct get_thread_info_reply reply;
 672     req.handle = hthread;
 673     CLIENT_SendRequest( REQ_GET_THREAD_INFO, -1, 1, &req, sizeof(req) );
 674     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL )) return FALSE;
 675     if (exitcode) *exitcode = reply.exit_code;
 676     return TRUE;
 677 }
 678
 679
 680 /**********************************************************************
 681  * ResumeThread [KERNEL32.587]  Resumes a thread.
 682  *
 683  * Decrements a thread's suspend count.  When count is zero, the
 684  * execution of the thread is resumed.
 685  *
 686  * RETURNS
 687  *    Success: Previous suspend count
 688  *    Failure: 0xFFFFFFFF
 689  *    Already running: 0
 690  */
 691 DWORD WINAPI ResumeThread(
 692     HANDLE hthread) /* [in] Identifies thread to restart */
 693 {
 694     struct resume_thread_request req;
 695     struct resume_thread_reply reply;
 696     req.handle = hthread;
 697     CLIENT_SendRequest( REQ_RESUME_THREAD, -1, 1, &req, sizeof(req) );
 698     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL )) return 0xffffffff;
 699     return reply.count;
 700 }
 701
 702
 703 /**********************************************************************
 704  * SuspendThread [KERNEL32.681]  Suspends a thread.
 705  *
 706  * RETURNS
 707  *    Success: Previous suspend count
 708  *    Failure: 0xFFFFFFFF
 709  */
 710 DWORD WINAPI SuspendThread(
 711     HANDLE hthread) /* [in] Handle to the thread */
 712 {
 713     struct suspend_thread_request req;
 714     struct suspend_thread_reply reply;
 715     req.handle = hthread;
 716     CLIENT_SendRequest( REQ_SUSPEND_THREAD, -1, 1, &req, sizeof(req) );
 717     if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL )) return 0xffffffff;
 718     return reply.count;
 719 }
 720
 721
 722 /***********************************************************************
 723  *              QueueUserAPC  (KERNEL32.566)
 724  */
 725 DWORD WINAPI QueueUserAPC( PAPCFUNC func, HANDLE hthread, ULONG_PTR data )
 726 {
 727     struct queue_apc_request req;
 728     req.handle = hthread;
 729     req.func   = func;
 730     req.param  = (void *)data;
 731     CLIENT_SendRequest( REQ_QUEUE_APC, -1, 1, &req, sizeof(req) );
 732     return !CLIENT_WaitReply( NULL, NULL, 0 );
 733 }
 734
 735
 736 /**********************************************************************
 737  * GetThreadTimes [KERNEL32.???]  Obtains timing information.
 738  *
 739  * NOTES
 740  *    What are the fields where these values are stored?
 741  *
 742  * RETURNS
 743  *    Success: TRUE
 744  *    Failure: FALSE
 745  */
 746 BOOL WINAPI GetThreadTimes(
 747     HANDLE thread,         /* [in]  Specifies the thread of interest */
 748     LPFILETIME creationtime, /* [out] When the thread was created */
 749     LPFILETIME exittime,     /* [out] When the thread was destroyed */
 750     LPFILETIME kerneltime,   /* [out] Time thread spent in kernel mode */
 751     LPFILETIME usertime)     /* [out] Time thread spent in user mode */
 752 {
 753     FIXME("(0x%08x): stub\n",thread);
 754     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 755     return FALSE;
 756 }
 757
 758
 759 /**********************************************************************
 760  * AttachThreadInput [KERNEL32.8]  Attaches input of 1 thread to other
 761  *
 762  * Attaches the input processing mechanism of one thread to that of
 763  * another thread.
 764  *
 765  * RETURNS
 766  *    Success: TRUE
 767  *    Failure: FALSE
 768  *
 769  * TODO:
 770  *    1. Reset the Key State (currenly per thread key state is not maintained)
 771  */
 772 BOOL WINAPI AttachThreadInput(
 773     DWORD idAttach,   /* [in] Thread to attach */
 774     DWORD idAttachTo, /* [in] Thread to attach to */
 775     BOOL fAttach)   /* [in] Attach or detach */
 776 {
 777     MESSAGEQUEUE *pSrcMsgQ = 0, *pTgtMsgQ = 0;
 778     BOOL16 bRet = 0;
 779
 780     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 781
 782     /* A thread cannot attach to itself */
 783     if ( idAttach == idAttachTo )
 784         goto CLEANUP;
 785
 786     /* According to the docs this method should fail if a
 787      * "Journal record" hook is installed. (attaches all input queues together)
 788      */
 789     if ( HOOK_IsHooked( WH_JOURNALRECORD ) )
 790         goto CLEANUP;
 791
 792     /* Retrieve message queues corresponding to the thread id's */
 793     pTgtMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttach ) );
 794     pSrcMsgQ = (MESSAGEQUEUE *)QUEUE_Lock( GetThreadQueue16( idAttachTo ) );
 795
 796     /* Ensure we have message queues and that Src and Tgt threads
 797      * are not system threads.
 798      */
 799     if ( !pSrcMsgQ || !pTgtMsgQ || !pSrcMsgQ->pQData || !pTgtMsgQ->pQData )
 800         goto CLEANUP;
 801
 802     if (fAttach)   /* Attach threads */
 803     {
 804         /* Only attach if currently detached  */
 805         if ( pTgtMsgQ->pQData != pSrcMsgQ->pQData )
 806         {
 807             /* First release the target threads perQData */
 808             PERQDATA_Release( pTgtMsgQ->pQData );
 809
 810             /* Share a reference to the source threads perQDATA */
 811             PERQDATA_Addref( pSrcMsgQ->pQData );
 812             pTgtMsgQ->pQData = pSrcMsgQ->pQData;
 813         }
 814     }
 815     else    /* Detach threads */
 816     {
 817         /* Only detach if currently attached */
 818         if ( pTgtMsgQ->pQData == pSrcMsgQ->pQData )
 819         {
 820             /* First release the target threads perQData */
 821             PERQDATA_Release( pTgtMsgQ->pQData );
 822
 823             /* Give the target thread its own private perQDATA once more */
 824             pTgtMsgQ->pQData = PERQDATA_CreateInstance();
 825         }
 826     }
 827
 828     /* TODO: Reset the Key State */
 829
 830     bRet = 1;      /* Success */
 831
 832 CLEANUP:
 833
 834     /* Unlock the queues before returning */
 835     if ( pSrcMsgQ )
 836         QUEUE_Unlock( pSrcMsgQ );
 837     if ( pTgtMsgQ )
 838         QUEUE_Unlock( pTgtMsgQ );
 839
 840     return bRet;
 841 }
 842
 843 /**********************************************************************
 844  * VWin32_BoostThreadGroup [KERNEL.535]
 845  */
 846 VOID WINAPI VWin32_BoostThreadGroup( DWORD threadId, INT boost )
 847 {
 848     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 849 }
 850
 851 /**********************************************************************
 852  * VWin32_BoostThreadStatic [KERNEL.536]
 853  */
 854 VOID WINAPI VWin32_BoostThreadStatic( DWORD threadId, INT boost )
 855 {
 856     FIXME("(0x%08lx,%d): stub\n", threadId, boost);
 857 }
 858
 859 /**********************************************************************
 860  * SetThreadLocale [KERNEL32.671]  Sets the calling threads current locale.
 861  *
 862  * RETURNS
 863  *    Success: TRUE
 864  *    Failure: FALSE
 865  *
 866  * NOTES
 867  *  Implemented in NT only (3.1 and above according to MS
 868  */
 869 BOOL WINAPI SetThreadLocale(
 870     LCID lcid)     /* [in] Locale identifier */
 871 {
 872     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 873     return FALSE;
 874 }