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ntdll: Refactor test_NtQueryDirectoryFile to be table driven, check DIRECTORY attribute.
[wine.git] / dlls / ntdll / thread.c
blobdab1c1de222ab9192332685241b7d9e9ea2a427f
1 /*
2 * NT threads support
3 *
4 * Copyright 1996, 2003 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <assert.h>
25 #include <stdarg.h>
26 #include <sys/types.h>
27 #ifdef HAVE_SYS_MMAN_H
28 #include <sys/mman.h>
29 #endif
30 #ifdef HAVE_SYS_TIMES_H
31 #include <sys/times.h>
32 #endif
33
34 #define NONAMELESSUNION
35 #include "ntstatus.h"
36 #define WIN32_NO_STATUS
37 #include "winternl.h"
38 #include "wine/library.h"
39 #include "wine/server.h"
40 #include "wine/debug.h"
41 #include "ntdll_misc.h"
42 #include "ddk/wdm.h"
43 #include "wine/exception.h"
44
45 WINE_DEFAULT_DEBUG_CHANNEL(thread);
46 WINE_DECLARE_DEBUG_CHANNEL(relay);
47
48 struct _KUSER_SHARED_DATA *user_shared_data = NULL;
49
50 PUNHANDLED_EXCEPTION_FILTER unhandled_exception_filter = NULL;
51
52 /* info passed to a starting thread */
53 struct startup_info
54 {
55 TEB *teb;
56 PRTL_THREAD_START_ROUTINE entry_point;
57 void *entry_arg;
58 };
59
60 static PEB_LDR_DATA ldr;
61 static RTL_USER_PROCESS_PARAMETERS params; /* default parameters if no parent */
62 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
63 static RTL_BITMAP tls_bitmap;
64 static RTL_BITMAP tls_expansion_bitmap;
65 static RTL_BITMAP fls_bitmap;
66 static LIST_ENTRY tls_links;
67 static size_t sigstack_total_size;
68 static ULONG sigstack_zero_bits;
69 static int nb_threads = 1;
70
71 static RTL_CRITICAL_SECTION ldt_section;
72 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
73 {
74 0, 0, &ldt_section,
75 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
76 0, 0, { (DWORD_PTR)(__FILE__ ": ldt_section") }
77 };
78 static RTL_CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
79 static sigset_t ldt_sigset;
80
81 /***********************************************************************
82 * locking for LDT routines
83 */
84 static void ldt_lock(void)
85 {
86 sigset_t sigset;
87
88 pthread_sigmask( SIG_BLOCK, &server_block_set, &sigset );
89 RtlEnterCriticalSection( &ldt_section );
90 if (ldt_section.RecursionCount == 1) ldt_sigset = sigset;
91 }
92
93 static void ldt_unlock(void)
94 {
95 if (ldt_section.RecursionCount == 1)
96 {
97 sigset_t sigset = ldt_sigset;
98 RtlLeaveCriticalSection( &ldt_section );
99 pthread_sigmask( SIG_SETMASK, &sigset, NULL );
100 }
101 else RtlLeaveCriticalSection( &ldt_section );
102 }
103
104
105 /***********************************************************************
106 * init_teb
107 */
108 static inline NTSTATUS init_teb( TEB *teb )
109 {
110 struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
111
112 teb->Tib.ExceptionList = (void *)~0UL;
113 teb->Tib.StackBase = (void *)~0UL;
114 teb->Tib.Self = &teb->Tib;
115 teb->StaticUnicodeString.Buffer = teb->StaticUnicodeBuffer;
116 teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
117
118 if (!(thread_data->fs = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
119 thread_data->request_fd = -1;
120 thread_data->reply_fd = -1;
121 thread_data->wait_fd[0] = -1;
122 thread_data->wait_fd[1] = -1;
123
124 return STATUS_SUCCESS;
125 }
126
127
128 /***********************************************************************
129 * get_unicode_string
130 *
131 * Copy a unicode string from the startup info.
132 */
133 static inline void get_unicode_string( UNICODE_STRING *str, WCHAR **src, WCHAR **dst, UINT len )
134 {
135 str->Buffer = *dst;
136 str->Length = len;
137 str->MaximumLength = len + sizeof(WCHAR);
138 memcpy( str->Buffer, *src, len );
139 str->Buffer[len / sizeof(WCHAR)] = 0;
140 *src += len / sizeof(WCHAR);
141 *dst += len / sizeof(WCHAR) + 1;
142 }
143
144 /***********************************************************************
145 * init_user_process_params
146 *
147 * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
148 */
149 static NTSTATUS init_user_process_params( SIZE_T data_size, HANDLE *exe_file )
150 {
151 void *ptr;
152 WCHAR *src, *dst;
153 SIZE_T info_size, env_size, size, alloc_size;
154 NTSTATUS status;
155 startup_info_t *info;
156 RTL_USER_PROCESS_PARAMETERS *params = NULL;
157
158 if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, data_size )))
159 return STATUS_NO_MEMORY;
160
161 SERVER_START_REQ( get_startup_info )
162 {
163 wine_server_set_reply( req, info, data_size );
164 if (!(status = wine_server_call( req )))
165 {
166 data_size = wine_server_reply_size( reply );
167 info_size = reply->info_size;
168 env_size = data_size - info_size;
169 *exe_file = wine_server_ptr_handle( reply->exe_file );
170 }
171 }
172 SERVER_END_REQ;
173 if (status != STATUS_SUCCESS) goto done;
174
175 size = sizeof(*params);
176 size += MAX_NT_PATH_LENGTH * sizeof(WCHAR);
177 size += info->dllpath_len + sizeof(WCHAR);
178 size += info->imagepath_len + sizeof(WCHAR);
179 size += info->cmdline_len + sizeof(WCHAR);
180 size += info->title_len + sizeof(WCHAR);
181 size += info->desktop_len + sizeof(WCHAR);
182 size += info->shellinfo_len + sizeof(WCHAR);
183 size += info->runtime_len + sizeof(WCHAR);
184
185 alloc_size = size;
186 status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &alloc_size,
187 MEM_COMMIT, PAGE_READWRITE );
188 if (status != STATUS_SUCCESS) goto done;
189
190 NtCurrentTeb()->Peb->ProcessParameters = params;
191 params->AllocationSize = alloc_size;
192 params->Size = size;
193 params->Flags = PROCESS_PARAMS_FLAG_NORMALIZED;
194 params->DebugFlags = info->debug_flags;
195 params->ConsoleHandle = wine_server_ptr_handle( info->console );
196 params->ConsoleFlags = info->console_flags;
197 params->hStdInput = wine_server_ptr_handle( info->hstdin );
198 params->hStdOutput = wine_server_ptr_handle( info->hstdout );
199 params->hStdError = wine_server_ptr_handle( info->hstderr );
200 params->dwX = info->x;
201 params->dwY = info->y;
202 params->dwXSize = info->xsize;
203 params->dwYSize = info->ysize;
204 params->dwXCountChars = info->xchars;
205 params->dwYCountChars = info->ychars;
206 params->dwFillAttribute = info->attribute;
207 params->dwFlags = info->flags;
208 params->wShowWindow = info->show;
209
210 src = (WCHAR *)(info + 1);
211 dst = (WCHAR *)(params + 1);
212
213 /* current directory needs more space */
214 get_unicode_string( &params->CurrentDirectory.DosPath, &src, &dst, info->curdir_len );
215 params->CurrentDirectory.DosPath.MaximumLength = MAX_NT_PATH_LENGTH * sizeof(WCHAR);
216 dst = (WCHAR *)(params + 1) + MAX_NT_PATH_LENGTH;
217
218 get_unicode_string( &params->DllPath, &src, &dst, info->dllpath_len );
219 get_unicode_string( &params->ImagePathName, &src, &dst, info->imagepath_len );
220 get_unicode_string( &params->CommandLine, &src, &dst, info->cmdline_len );
221 get_unicode_string( &params->WindowTitle, &src, &dst, info->title_len );
222 get_unicode_string( &params->Desktop, &src, &dst, info->desktop_len );
223 get_unicode_string( &params->ShellInfo, &src, &dst, info->shellinfo_len );
224
225 /* runtime info isn't a real string */
226 params->RuntimeInfo.Buffer = dst;
227 params->RuntimeInfo.Length = params->RuntimeInfo.MaximumLength = info->runtime_len;
228 memcpy( dst, src, info->runtime_len );
229
230 /* environment needs to be a separate memory block */
231 ptr = NULL;
232 alloc_size = max( 1, env_size );
233 status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &alloc_size,
234 MEM_COMMIT, PAGE_READWRITE );
235 if (status != STATUS_SUCCESS) goto done;
236 memcpy( ptr, (char *)info + info_size, env_size );
237 params->Environment = ptr;
238
239 done:
240 RtlFreeHeap( GetProcessHeap(), 0, info );
241 return status;
242 }
243
244
245 /***********************************************************************
246 * thread_init
247 *
248 * Setup the initial thread.
249 *
250 * NOTES: The first allocated TEB on NT is at 0x7ffde000.
251 */
252 HANDLE thread_init(void)
253 {
254 PEB *peb;
255 TEB *teb;
256 void *addr;
257 SIZE_T size, info_size;
258 HANDLE exe_file = 0;
259 LARGE_INTEGER now;
260 struct ntdll_thread_data *thread_data;
261 static struct debug_info debug_info; /* debug info for initial thread */
262
263 virtual_init();
264
265 /* reserve space for shared user data */
266
267 addr = (void *)0x7ffe0000;
268 size = 0x10000;
269 NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
270 user_shared_data = addr;
271
272 /* allocate and initialize the PEB */
273
274 addr = NULL;
275 size = sizeof(*peb);
276 NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 1, &size,
277 MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
278 peb = addr;
279
280 peb->ProcessParameters = &params;
281 peb->TlsBitmap = &tls_bitmap;
282 peb->TlsExpansionBitmap = &tls_expansion_bitmap;
283 peb->FlsBitmap = &fls_bitmap;
284 peb->LdrData = &ldr;
285 params.CurrentDirectory.DosPath.Buffer = current_dir;
286 params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
287 params.wShowWindow = 1; /* SW_SHOWNORMAL */
288 RtlInitializeBitMap( &tls_bitmap, peb->TlsBitmapBits, sizeof(peb->TlsBitmapBits) * 8 );
289 RtlInitializeBitMap( &tls_expansion_bitmap, peb->TlsExpansionBitmapBits,
290 sizeof(peb->TlsExpansionBitmapBits) * 8 );
291 RtlInitializeBitMap( &fls_bitmap, peb->FlsBitmapBits, sizeof(peb->FlsBitmapBits) * 8 );
292 InitializeListHead( &peb->FlsListHead );
293 InitializeListHead( &ldr.InLoadOrderModuleList );
294 InitializeListHead( &ldr.InMemoryOrderModuleList );
295 InitializeListHead( &ldr.InInitializationOrderModuleList );
296 InitializeListHead( &tls_links );
297
298 /* allocate and initialize the initial TEB */
299
300 sigstack_total_size = get_signal_stack_total_size();
301 while (1U << sigstack_zero_bits < sigstack_total_size) sigstack_zero_bits++;
302 assert( 1U << sigstack_zero_bits == sigstack_total_size ); /* must be a power of 2 */
303 assert( sigstack_total_size >= sizeof(TEB) + sizeof(struct startup_info) );
304
305 addr = NULL;
306 size = sigstack_total_size;
307 NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
308 &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
309 teb = addr;
310 teb->Peb = peb;
311 init_teb( teb );
312 thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
313 thread_data->debug_info = &debug_info;
314 InsertHeadList( &tls_links, &teb->TlsLinks );
315
316 signal_init_thread( teb );
317 virtual_init_threading();
318
319 debug_info.str_pos = debug_info.strings;
320 debug_info.out_pos = debug_info.output;
321 debug_init();
322
323 /* setup the server connection */
324 server_init_process();
325 info_size = server_init_thread( peb );
326
327 /* create the process heap */
328 if (!(peb->ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
329 {
330 MESSAGE( "wine: failed to create the process heap\n" );
331 exit(1);
332 }
333
334 /* allocate user parameters */
335 if (info_size)
336 {
337 init_user_process_params( info_size, &exe_file );
338 }
339 else
340 {
341 /* This is wine specific: we have no parent (we're started from unix)
342 * so, create a simple console with bare handles to unix stdio
343 */
344 wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE, OBJ_INHERIT, &params.hStdInput );
345 wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
346 wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
347 }
348
349 /* initialize LDT locking */
350 wine_ldt_init_locking( ldt_lock, ldt_unlock );
351
352 /* initialize time values in user_shared_data */
353 NtQuerySystemTime( &now );
354 user_shared_data->SystemTime.LowPart = now.u.LowPart;
355 user_shared_data->SystemTime.High1Time = user_shared_data->SystemTime.High2Time = now.u.HighPart;
356 user_shared_data->u.TickCountQuad = (now.QuadPart - server_start_time) / 10000;
357 user_shared_data->u.TickCount.High2Time = user_shared_data->u.TickCount.High1Time;
358 user_shared_data->TickCountLowDeprecated = user_shared_data->u.TickCount.LowPart;
359 user_shared_data->TickCountMultiplier = 1 << 24;
360
361 fill_cpu_info();
362
363 return exe_file;
364 }
365
366
367 /***********************************************************************
368 * terminate_thread
369 */
370 void terminate_thread( int status )
371 {
372 pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
373 if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) _exit( status );
374
375 close( ntdll_get_thread_data()->wait_fd[0] );
376 close( ntdll_get_thread_data()->wait_fd[1] );
377 close( ntdll_get_thread_data()->reply_fd );
378 close( ntdll_get_thread_data()->request_fd );
379 pthread_exit( UIntToPtr(status) );
380 }
381
382
383 /***********************************************************************
384 * exit_thread
385 */
386 void exit_thread( int status )
387 {
388 static void *prev_teb;
389 TEB *teb;
390
391 if (status) /* send the exit code to the server (0 is already the default) */
392 {
393 SERVER_START_REQ( terminate_thread )
394 {
395 req->handle = wine_server_obj_handle( GetCurrentThread() );
396 req->exit_code = status;
397 wine_server_call( req );
398 }
399 SERVER_END_REQ;
400 }
401
402 if (interlocked_xchg_add( &nb_threads, -1 ) <= 1)
403 {
404 LdrShutdownProcess();
405 exit( status );
406 }
407
408 LdrShutdownThread();
409 RtlAcquirePebLock();
410 RemoveEntryList( &NtCurrentTeb()->TlsLinks );
411 RtlReleasePebLock();
412 RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->FlsSlots );
413 RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->TlsExpansionSlots );
414
415 pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
416
417 if ((teb = interlocked_xchg_ptr( &prev_teb, NtCurrentTeb() )))
418 {
419 struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
420 SIZE_T size;
421
422 pthread_join( thread_data->pthread_id, NULL );
423 wine_ldt_free_fs( thread_data->fs );
424 size = 0;
425 NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
426 size = 0;
427 NtFreeVirtualMemory( GetCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
428 }
429
430 close( ntdll_get_thread_data()->wait_fd[0] );
431 close( ntdll_get_thread_data()->wait_fd[1] );
432 close( ntdll_get_thread_data()->reply_fd );
433 close( ntdll_get_thread_data()->request_fd );
434 pthread_exit( UIntToPtr(status) );
435 }
436
437
438 /***********************************************************************
439 * start_thread
440 *
441 * Startup routine for a newly created thread.
442 */
443 static void start_thread( struct startup_info *info )
444 {
445 TEB *teb = info->teb;
446 struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
447 PRTL_THREAD_START_ROUTINE func = info->entry_point;
448 void *arg = info->entry_arg;
449 struct debug_info debug_info;
450
451 debug_info.str_pos = debug_info.strings;
452 debug_info.out_pos = debug_info.output;
453 thread_data->debug_info = &debug_info;
454 thread_data->pthread_id = pthread_self();
455
456 signal_init_thread( teb );
457 server_init_thread( func );
458 pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
459
460 RtlAcquirePebLock();
461 InsertHeadList( &tls_links, &teb->TlsLinks );
462 RtlReleasePebLock();
463
464 MODULE_DllThreadAttach( NULL );
465
466 if (TRACE_ON(relay))
467 DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), func, arg );
468
469 call_thread_entry_point( (LPTHREAD_START_ROUTINE)func, arg );
470 }
471
472
473 /***********************************************************************
474 * RtlCreateUserThread (NTDLL.@)
475 */
476 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
477 BOOLEAN suspended, PVOID stack_addr,
478 SIZE_T stack_reserve, SIZE_T stack_commit,
479 PRTL_THREAD_START_ROUTINE start, void *param,
480 HANDLE *handle_ptr, CLIENT_ID *id )
481 {
482 sigset_t sigset;
483 pthread_t pthread_id;
484 pthread_attr_t attr;
485 struct ntdll_thread_data *thread_data = NULL;
486 struct ntdll_thread_regs *thread_regs;
487 struct startup_info *info = NULL;
488 void *addr = NULL;
489 HANDLE handle = 0;
490 TEB *teb;
491 DWORD tid = 0;
492 int request_pipe[2];
493 NTSTATUS status;
494 SIZE_T size;
495
496 if (process != NtCurrentProcess())
497 {
498 apc_call_t call;
499 apc_result_t result;
500
501 memset( &call, 0, sizeof(call) );
502
503 call.create_thread.type = APC_CREATE_THREAD;
504 call.create_thread.func = wine_server_client_ptr( start );
505 call.create_thread.arg = wine_server_client_ptr( param );
506 call.create_thread.reserve = stack_reserve;
507 call.create_thread.commit = stack_commit;
508 call.create_thread.suspend = suspended;
509 status = NTDLL_queue_process_apc( process, &call, &result );
510 if (status != STATUS_SUCCESS) return status;
511
512 if (result.create_thread.status == STATUS_SUCCESS)
513 {
514 if (id) id->UniqueThread = ULongToHandle(result.create_thread.tid);
515 if (handle_ptr) *handle_ptr = wine_server_ptr_handle( result.create_thread.handle );
516 else NtClose( wine_server_ptr_handle( result.create_thread.handle ));
517 }
518 return result.create_thread.status;
519 }
520
521 if (server_pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
522 wine_server_send_fd( request_pipe[0] );
523
524 SERVER_START_REQ( new_thread )
525 {
526 req->access = THREAD_ALL_ACCESS;
527 req->attributes = 0; /* FIXME */
528 req->suspend = suspended;
529 req->request_fd = request_pipe[0];
530 if (!(status = wine_server_call( req )))
531 {
532 handle = wine_server_ptr_handle( reply->handle );
533 tid = reply->tid;
534 }
535 close( request_pipe[0] );
536 }
537 SERVER_END_REQ;
538
539 if (status)
540 {
541 close( request_pipe[1] );
542 return status;
543 }
544
545 pthread_sigmask( SIG_BLOCK, &server_block_set, &sigset );
546
547 addr = NULL;
548 size = sigstack_total_size;
549 if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
550 &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
551 goto error;
552 teb = addr;
553 teb->Peb = NtCurrentTeb()->Peb;
554 info = (struct startup_info *)(teb + 1);
555 info->teb = teb;
556 info->entry_point = start;
557 info->entry_arg = param;
558
559 if ((status = init_teb( teb ))) goto error;
560
561 teb->ClientId.UniqueProcess = ULongToHandle(GetCurrentProcessId());
562 teb->ClientId.UniqueThread = ULongToHandle(tid);
563
564 thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
565 thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
566 thread_data->request_fd = request_pipe[1];
567
568 /* inherit debug registers from parent thread */
569 thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
570 thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
571 thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
572 thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
573 thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
574 thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
575
576 if ((status = virtual_alloc_thread_stack( teb, stack_reserve, stack_commit ))) goto error;
577
578 pthread_attr_init( &attr );
579 pthread_attr_setstack( &attr, teb->DeallocationStack,
580 (char *)teb->Tib.StackBase - (char *)teb->DeallocationStack );
581 pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); /* force creating a kernel thread */
582 interlocked_xchg_add( &nb_threads, 1 );
583 if (pthread_create( &pthread_id, &attr, (void * (*)(void *))start_thread, info ))
584 {
585 interlocked_xchg_add( &nb_threads, -1 );
586 pthread_attr_destroy( &attr );
587 size = 0;
588 NtFreeVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
589 status = STATUS_NO_MEMORY;
590 goto error;
591 }
592 pthread_attr_destroy( &attr );
593 pthread_sigmask( SIG_SETMASK, &sigset, NULL );
594
595 if (id) id->UniqueThread = ULongToHandle(tid);
596 if (handle_ptr) *handle_ptr = handle;
597 else NtClose( handle );
598
599 return STATUS_SUCCESS;
600
601 error:
602 if (thread_data) wine_ldt_free_fs( thread_data->fs );
603 if (addr)
604 {
605 size = 0;
606 NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
607 }
608 if (handle) NtClose( handle );
609 pthread_sigmask( SIG_SETMASK, &sigset, NULL );
610 close( request_pipe[1] );
611 return status;
612 }
613
614
615 /***********************************************************************
616 * NtOpenThread (NTDLL.@)
617 * ZwOpenThread (NTDLL.@)
618 */
619 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
620 const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
621 {
622 NTSTATUS ret;
623
624 SERVER_START_REQ( open_thread )
625 {
626 req->tid = HandleToULong(id->UniqueThread);
627 req->access = access;
628 req->attributes = attr ? attr->Attributes : 0;
629 ret = wine_server_call( req );
630 *handle = wine_server_ptr_handle( reply->handle );
631 }
632 SERVER_END_REQ;
633 return ret;
634 }
635
636
637 /******************************************************************************
638 * NtSuspendThread (NTDLL.@)
639 * ZwSuspendThread (NTDLL.@)
640 */
641 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
642 {
643 NTSTATUS ret;
644
645 SERVER_START_REQ( suspend_thread )
646 {
647 req->handle = wine_server_obj_handle( handle );
648 if (!(ret = wine_server_call( req ))) *count = reply->count;
649 }
650 SERVER_END_REQ;
651 return ret;
652 }
653
654
655 /******************************************************************************
656 * NtResumeThread (NTDLL.@)
657 * ZwResumeThread (NTDLL.@)
658 */
659 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
660 {
661 NTSTATUS ret;
662
663 SERVER_START_REQ( resume_thread )
664 {
665 req->handle = wine_server_obj_handle( handle );
666 if (!(ret = wine_server_call( req ))) *count = reply->count;
667 }
668 SERVER_END_REQ;
669 return ret;
670 }
671
672
673 /******************************************************************************
674 * NtAlertResumeThread (NTDLL.@)
675 * ZwAlertResumeThread (NTDLL.@)
676 */
677 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
678 {
679 FIXME( "stub: should alert thread %p\n", handle );
680 return NtResumeThread( handle, count );
681 }
682
683
684 /******************************************************************************
685 * NtAlertThread (NTDLL.@)
686 * ZwAlertThread (NTDLL.@)
687 */
688 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
689 {
690 FIXME( "stub: %p\n", handle );
691 return STATUS_NOT_IMPLEMENTED;
692 }
693
694
695 /******************************************************************************
696 * NtTerminateThread (NTDLL.@)
697 * ZwTerminateThread (NTDLL.@)
698 */
699 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
700 {
701 NTSTATUS ret;
702 BOOL self;
703
704 SERVER_START_REQ( terminate_thread )
705 {
706 req->handle = wine_server_obj_handle( handle );
707 req->exit_code = exit_code;
708 ret = wine_server_call( req );
709 self = !ret && reply->self;
710 }
711 SERVER_END_REQ;
712
713 if (self) abort_thread( exit_code );
714 return ret;
715 }
716
717
718 /******************************************************************************
719 * NtQueueApcThread (NTDLL.@)
720 */
721 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
722 ULONG_PTR arg2, ULONG_PTR arg3 )
723 {
724 NTSTATUS ret;
725 SERVER_START_REQ( queue_apc )
726 {
727 req->handle = wine_server_obj_handle( handle );
728 if (func)
729 {
730 req->call.type = APC_USER;
731 req->call.user.func = wine_server_client_ptr( func );
732 req->call.user.args[0] = arg1;
733 req->call.user.args[1] = arg2;
734 req->call.user.args[2] = arg3;
735 }
736 else req->call.type = APC_NONE; /* wake up only */
737 ret = wine_server_call( req );
738 }
739 SERVER_END_REQ;
740 return ret;
741 }
742
743
744 /***********************************************************************
745 * NtSetContextThread (NTDLL.@)
746 * ZwSetContextThread (NTDLL.@)
747 */
748 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
749 {
750 NTSTATUS ret;
751 DWORD dummy, i;
752 BOOL self = FALSE;
753
754 #ifdef __i386__
755 /* on i386 debug registers always require a server call */
756 self = (handle == GetCurrentThread());
757 if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
758 {
759 struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
760 self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
761 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
762 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
763 }
764 #endif
765
766 if (!self)
767 {
768 context_t server_context;
769
770 context_to_server( &server_context, context );
771
772 SERVER_START_REQ( set_thread_context )
773 {
774 req->handle = wine_server_obj_handle( handle );
775 req->suspend = 0;
776 wine_server_add_data( req, &server_context, sizeof(server_context) );
777 ret = wine_server_call( req );
778 self = reply->self;
779 }
780 SERVER_END_REQ;
781
782 if (ret == STATUS_PENDING)
783 {
784 if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
785 {
786 for (i = 0; i < 100; i++)
787 {
788 SERVER_START_REQ( set_thread_context )
789 {
790 req->handle = wine_server_obj_handle( handle );
791 req->suspend = 0;
792 wine_server_add_data( req, &server_context, sizeof(server_context) );
793 ret = wine_server_call( req );
794 }
795 SERVER_END_REQ;
796 if (ret == STATUS_PENDING)
797 {
798 LARGE_INTEGER timeout;
799 timeout.QuadPart = -10000;
800 NtDelayExecution( FALSE, &timeout );
801 }
802 else break;
803 }
804 NtResumeThread( handle, &dummy );
805 }
806 if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
807 }
808
809 if (ret) return ret;
810 }
811
812 if (self) set_cpu_context( context );
813 return STATUS_SUCCESS;
814 }
815
816
817 /* convert CPU-specific flags to generic server flags */
818 static inline unsigned int get_server_context_flags( DWORD flags )
819 {
820 unsigned int ret = 0;
821
822 flags &= 0x3f; /* mask CPU id flags */
823 if (flags & CONTEXT_CONTROL) ret |= SERVER_CTX_CONTROL;
824 if (flags & CONTEXT_INTEGER) ret |= SERVER_CTX_INTEGER;
825 #ifdef CONTEXT_SEGMENTS
826 if (flags & CONTEXT_SEGMENTS) ret |= SERVER_CTX_SEGMENTS;
827 #endif
828 #ifdef CONTEXT_FLOATING_POINT
829 if (flags & CONTEXT_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT;
830 #endif
831 #ifdef CONTEXT_DEBUG_REGISTERS
832 if (flags & CONTEXT_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS;
833 #endif
834 #ifdef CONTEXT_EXTENDED_REGISTERS
835 if (flags & CONTEXT_EXTENDED_REGISTERS) ret |= SERVER_CTX_EXTENDED_REGISTERS;
836 #endif
837 return ret;
838 }
839
840 /***********************************************************************
841 * NtGetContextThread (NTDLL.@)
842 * ZwGetContextThread (NTDLL.@)
843 */
844 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
845 {
846 NTSTATUS ret;
847 DWORD dummy, i;
848 DWORD needed_flags = context->ContextFlags;
849 BOOL self = (handle == GetCurrentThread());
850
851 #ifdef __i386__
852 /* on i386 debug registers always require a server call */
853 if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
854 #endif
855
856 if (!self)
857 {
858 unsigned int server_flags = get_server_context_flags( context->ContextFlags );
859 context_t server_context;
860
861 SERVER_START_REQ( get_thread_context )
862 {
863 req->handle = wine_server_obj_handle( handle );
864 req->flags = server_flags;
865 req->suspend = 0;
866 wine_server_set_reply( req, &server_context, sizeof(server_context) );
867 ret = wine_server_call( req );
868 self = reply->self;
869 }
870 SERVER_END_REQ;
871
872 if (ret == STATUS_PENDING)
873 {
874 if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
875 {
876 for (i = 0; i < 100; i++)
877 {
878 SERVER_START_REQ( get_thread_context )
879 {
880 req->handle = wine_server_obj_handle( handle );
881 req->flags = server_flags;
882 req->suspend = 0;
883 wine_server_set_reply( req, &server_context, sizeof(server_context) );
884 ret = wine_server_call( req );
885 }
886 SERVER_END_REQ;
887 if (ret == STATUS_PENDING)
888 {
889 LARGE_INTEGER timeout;
890 timeout.QuadPart = -10000;
891 NtDelayExecution( FALSE, &timeout );
892 }
893 else break;
894 }
895 NtResumeThread( handle, &dummy );
896 }
897 if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
898 }
899 if (!ret) ret = context_from_server( context, &server_context );
900 if (ret) return ret;
901 needed_flags &= ~context->ContextFlags;
902 }
903
904 if (self)
905 {
906 if (needed_flags)
907 {
908 CONTEXT ctx;
909 RtlCaptureContext( &ctx );
910 copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
911 context->ContextFlags |= ctx.ContextFlags & needed_flags;
912 }
913 #ifdef __i386__
914 /* update the cached version of the debug registers */
915 if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
916 {
917 struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
918 regs->dr0 = context->Dr0;
919 regs->dr1 = context->Dr1;
920 regs->dr2 = context->Dr2;
921 regs->dr3 = context->Dr3;
922 regs->dr6 = context->Dr6;
923 regs->dr7 = context->Dr7;
924 }
925 #endif
926 }
927 return STATUS_SUCCESS;
928 }
929
930
931 /******************************************************************************
932 * NtQueryInformationThread (NTDLL.@)
933 * ZwQueryInformationThread (NTDLL.@)
934 */
935 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
936 void *data, ULONG length, ULONG *ret_len )
937 {
938 NTSTATUS status;
939
940 switch(class)
941 {
942 case ThreadBasicInformation:
943 {
944 THREAD_BASIC_INFORMATION info;
945 const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
946
947 SERVER_START_REQ( get_thread_info )
948 {
949 req->handle = wine_server_obj_handle( handle );
950 req->tid_in = 0;
951 if (!(status = wine_server_call( req )))
952 {
953 info.ExitStatus = reply->exit_code;
954 info.TebBaseAddress = wine_server_get_ptr( reply->teb );
955 info.ClientId.UniqueProcess = ULongToHandle(reply->pid);
956 info.ClientId.UniqueThread = ULongToHandle(reply->tid);
957 info.AffinityMask = reply->affinity & affinity_mask;
958 info.Priority = reply->priority;
959 info.BasePriority = reply->priority; /* FIXME */
960 }
961 }
962 SERVER_END_REQ;
963 if (status == STATUS_SUCCESS)
964 {
965 if (data) memcpy( data, &info, min( length, sizeof(info) ));
966 if (ret_len) *ret_len = min( length, sizeof(info) );
967 }
968 }
969 return status;
970 case ThreadAffinityMask:
971 {
972 const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
973 ULONG_PTR affinity = 0;
974
975 SERVER_START_REQ( get_thread_info )
976 {
977 req->handle = wine_server_obj_handle( handle );
978 req->tid_in = 0;
979 if (!(status = wine_server_call( req )))
980 affinity = reply->affinity & affinity_mask;
981 }
982 SERVER_END_REQ;
983 if (status == STATUS_SUCCESS)
984 {
985 if (data) memcpy( data, &affinity, min( length, sizeof(affinity) ));
986 if (ret_len) *ret_len = min( length, sizeof(affinity) );
987 }
988 }
989 return status;
990 case ThreadTimes:
991 {
992 KERNEL_USER_TIMES kusrt;
993 /* We need to do a server call to get the creation time or exit time */
994 /* This works on any thread */
995 SERVER_START_REQ( get_thread_info )
996 {
997 req->handle = wine_server_obj_handle( handle );
998 req->tid_in = 0;
999 status = wine_server_call( req );
1000 if (status == STATUS_SUCCESS)
1001 {
1002 kusrt.CreateTime.QuadPart = reply->creation_time;
1003 kusrt.ExitTime.QuadPart = reply->exit_time;
1004 }
1005 }
1006 SERVER_END_REQ;
1007 if (status == STATUS_SUCCESS)
1008 {
1009 /* We call times(2) for kernel time or user time */
1010 /* We can only (portably) do this for the current thread */
1011 if (handle == GetCurrentThread())
1012 {
1013 struct tms time_buf;
1014 long clocks_per_sec = sysconf(_SC_CLK_TCK);
1015
1016 times(&time_buf);
1017 kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
1018 kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
1019 }
1020 else
1021 {
1022 static BOOL reported = FALSE;
1023
1024 kusrt.KernelTime.QuadPart = 0;
1025 kusrt.UserTime.QuadPart = 0;
1026 if (reported)
1027 TRACE("Cannot get kerneltime or usertime of other threads\n");
1028 else
1029 {
1030 FIXME("Cannot get kerneltime or usertime of other threads\n");
1031 reported = TRUE;
1032 }
1033 }
1034 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1035 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1036 }
1037 }
1038 return status;
1039 case ThreadDescriptorTableEntry:
1040 {
1041 #ifdef __i386__
1042 THREAD_DESCRIPTOR_INFORMATION* tdi = data;
1043 if (length < sizeof(*tdi))
1044 status = STATUS_INFO_LENGTH_MISMATCH;
1045 else if (!(tdi->Selector & 4)) /* GDT selector */
1046 {
1047 unsigned sel = tdi->Selector & ~3; /* ignore RPL */
1048 status = STATUS_SUCCESS;
1049 if (!sel) /* null selector */
1050 memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
1051 else
1052 {
1053 tdi->Entry.BaseLow = 0;
1054 tdi->Entry.HighWord.Bits.BaseMid = 0;
1055 tdi->Entry.HighWord.Bits.BaseHi = 0;
1056 tdi->Entry.LimitLow = 0xffff;
1057 tdi->Entry.HighWord.Bits.LimitHi = 0xf;
1058 tdi->Entry.HighWord.Bits.Dpl = 3;
1059 tdi->Entry.HighWord.Bits.Sys = 0;
1060 tdi->Entry.HighWord.Bits.Pres = 1;
1061 tdi->Entry.HighWord.Bits.Granularity = 1;
1062 tdi->Entry.HighWord.Bits.Default_Big = 1;
1063 tdi->Entry.HighWord.Bits.Type = 0x12;
1064 /* it has to be one of the system GDT selectors */
1065 if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
1066 {
1067 if (sel == (wine_get_cs() & ~3))
1068 tdi->Entry.HighWord.Bits.Type |= 8; /* code segment */
1069 else status = STATUS_ACCESS_DENIED;
1070 }
1071 }
1072 }
1073 else
1074 {
1075 SERVER_START_REQ( get_selector_entry )
1076 {
1077 req->handle = wine_server_obj_handle( handle );
1078 req->entry = tdi->Selector >> 3;
1079 status = wine_server_call( req );
1080 if (!status)
1081 {
1082 if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1083 status = STATUS_ACCESS_VIOLATION;
1084 else
1085 {
1086 wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1087 wine_ldt_set_limit( &tdi->Entry, reply->limit );
1088 wine_ldt_set_flags( &tdi->Entry, reply->flags );
1089 }
1090 }
1091 }
1092 SERVER_END_REQ;
1093 }
1094 if (status == STATUS_SUCCESS && ret_len)
1095 /* yes, that's a bit strange, but it's the way it is */
1096 *ret_len = sizeof(LDT_ENTRY);
1097 #else
1098 status = STATUS_NOT_IMPLEMENTED;
1099 #endif
1100 return status;
1101 }
1102 case ThreadAmILastThread:
1103 {
1104 SERVER_START_REQ(get_thread_info)
1105 {
1106 req->handle = wine_server_obj_handle( handle );
1107 req->tid_in = 0;
1108 status = wine_server_call( req );
1109 if (status == STATUS_SUCCESS)
1110 {
1111 BOOLEAN last = reply->last;
1112 if (data) memcpy( data, &last, min( length, sizeof(last) ));
1113 if (ret_len) *ret_len = min( length, sizeof(last) );
1114 }
1115 }
1116 SERVER_END_REQ;
1117 return status;
1118 }
1119 case ThreadPriority:
1120 case ThreadBasePriority:
1121 case ThreadImpersonationToken:
1122 case ThreadEnableAlignmentFaultFixup:
1123 case ThreadEventPair_Reusable:
1124 case ThreadQuerySetWin32StartAddress:
1125 case ThreadZeroTlsCell:
1126 case ThreadPerformanceCount:
1127 case ThreadIdealProcessor:
1128 case ThreadPriorityBoost:
1129 case ThreadSetTlsArrayAddress:
1130 case ThreadIsIoPending:
1131 default:
1132 FIXME( "info class %d not supported yet\n", class );
1133 return STATUS_NOT_IMPLEMENTED;
1134 }
1135 }
1136
1137
1138 /******************************************************************************
1139 * NtSetInformationThread (NTDLL.@)
1140 * ZwSetInformationThread (NTDLL.@)
1141 */
1142 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1143 LPCVOID data, ULONG length )
1144 {
1145 NTSTATUS status;
1146 switch(class)
1147 {
1148 case ThreadZeroTlsCell:
1149 if (handle == GetCurrentThread())
1150 {
1151 LIST_ENTRY *entry;
1152 DWORD index;
1153
1154 if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1155 index = *(const DWORD *)data;
1156 if (index < TLS_MINIMUM_AVAILABLE)
1157 {
1158 RtlAcquirePebLock();
1159 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1160 {
1161 TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1162 teb->TlsSlots[index] = 0;
1163 }
1164 RtlReleasePebLock();
1165 }
1166 else
1167 {
1168 index -= TLS_MINIMUM_AVAILABLE;
1169 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1170 return STATUS_INVALID_PARAMETER;
1171 RtlAcquirePebLock();
1172 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1173 {
1174 TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1175 if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1176 }
1177 RtlReleasePebLock();
1178 }
1179 return STATUS_SUCCESS;
1180 }
1181 FIXME( "ZeroTlsCell not supported on other threads\n" );
1182 return STATUS_NOT_IMPLEMENTED;
1183
1184 case ThreadImpersonationToken:
1185 {
1186 const HANDLE *phToken = data;
1187 if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1188 TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1189 SERVER_START_REQ( set_thread_info )
1190 {
1191 req->handle = wine_server_obj_handle( handle );
1192 req->token = wine_server_obj_handle( *phToken );
1193 req->mask = SET_THREAD_INFO_TOKEN;
1194 status = wine_server_call( req );
1195 }
1196 SERVER_END_REQ;
1197 }
1198 return status;
1199 case ThreadBasePriority:
1200 {
1201 const DWORD *pprio = data;
1202 if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1203 SERVER_START_REQ( set_thread_info )
1204 {
1205 req->handle = wine_server_obj_handle( handle );
1206 req->priority = *pprio;
1207 req->mask = SET_THREAD_INFO_PRIORITY;
1208 status = wine_server_call( req );
1209 }
1210 SERVER_END_REQ;
1211 }
1212 return status;
1213 case ThreadAffinityMask:
1214 {
1215 const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1216 const ULONG_PTR *paff = data;
1217 if (length != sizeof(ULONG_PTR)) return STATUS_INVALID_PARAMETER;
1218 if (*paff & ~affinity_mask) return STATUS_INVALID_PARAMETER;
1219 if (!*paff) return STATUS_INVALID_PARAMETER;
1220 SERVER_START_REQ( set_thread_info )
1221 {
1222 req->handle = wine_server_obj_handle( handle );
1223 req->affinity = *paff;
1224 req->mask = SET_THREAD_INFO_AFFINITY;
1225 status = wine_server_call( req );
1226 }
1227 SERVER_END_REQ;
1228 }
1229 return status;
1230 case ThreadBasicInformation:
1231 case ThreadTimes:
1232 case ThreadPriority:
1233 case ThreadDescriptorTableEntry:
1234 case ThreadEnableAlignmentFaultFixup:
1235 case ThreadEventPair_Reusable:
1236 case ThreadQuerySetWin32StartAddress:
1237 case ThreadPerformanceCount:
1238 case ThreadAmILastThread:
1239 case ThreadIdealProcessor:
1240 case ThreadPriorityBoost:
1241 case ThreadSetTlsArrayAddress:
1242 case ThreadIsIoPending:
1243 default:
1244 FIXME( "info class %d not supported yet\n", class );
1245 return STATUS_NOT_IMPLEMENTED;
1246 }
1247 }
Windows API implementation