dlls/ntdll/sync.c

   1 /*
   2  *      Process synchronisation
   3  *
   4  * Copyright 1996, 1997, 1998 Marcus Meissner
   5  * Copyright 1997, 1999 Alexandre Julliard
   6  * Copyright 1999, 2000 Juergen Schmied
   7  * Copyright 2003 Eric Pouech
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include "config.h"
  25
  26 #include <assert.h>
  27 #include <errno.h>
  28 #include <signal.h>
  29 #ifdef HAVE_SYS_TIME_H
  30 # include <sys/time.h>
  31 #endif
  32 #ifdef HAVE_POLL_H
  33 #include <poll.h>
  34 #endif
  35 #ifdef HAVE_SYS_POLL_H
  36 # include <sys/poll.h>
  37 #endif
  38 #ifdef HAVE_UNISTD_H
  39 # include <unistd.h>
  40 #endif
  41 #ifdef HAVE_SCHED_H
  42 # include <sched.h>
  43 #endif
  44 #include <string.h>
  45 #include <stdarg.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <time.h>
  49
  50 #define NONAMELESSUNION
  51 #define NONAMELESSSTRUCT
  52
  53 #include "ntstatus.h"
  54 #define WIN32_NO_STATUS
  55 #include "windef.h"
  56 #include "winternl.h"
  57 #include "wine/server.h"
  58 #include "wine/debug.h"
  59 #include "ntdll_misc.h"
  60
  61 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
  62
  63 /* creates a struct security_descriptor and contained information in one contiguous piece of memory */
  64 NTSTATUS NTDLL_create_struct_sd(PSECURITY_DESCRIPTOR nt_sd, struct security_descriptor **server_sd,
  65                                 data_size_t *server_sd_len)
  66 {
  67     unsigned int len;
  68     PSID owner, group;
  69     ACL *dacl, *sacl;
  70     BOOLEAN owner_present, group_present, dacl_present, sacl_present;
  71     BOOLEAN defaulted;
  72     NTSTATUS status;
  73     unsigned char *ptr;
  74
  75     if (!nt_sd)
  76     {
  77         *server_sd = NULL;
  78         *server_sd_len = 0;
  79         return STATUS_SUCCESS;
  80     }
  81
  82     len = sizeof(struct security_descriptor);
  83
  84     status = RtlGetOwnerSecurityDescriptor(nt_sd, &owner, &owner_present);
  85     if (status != STATUS_SUCCESS) return status;
  86     status = RtlGetGroupSecurityDescriptor(nt_sd, &group, &group_present);
  87     if (status != STATUS_SUCCESS) return status;
  88     status = RtlGetSaclSecurityDescriptor(nt_sd, &sacl_present, &sacl, &defaulted);
  89     if (status != STATUS_SUCCESS) return status;
  90     status = RtlGetDaclSecurityDescriptor(nt_sd, &dacl_present, &dacl, &defaulted);
  91     if (status != STATUS_SUCCESS) return status;
  92
  93     if (owner_present)
  94         len += RtlLengthSid(owner);
  95     if (group_present)
  96         len += RtlLengthSid(group);
  97     if (sacl_present && sacl)
  98         len += sacl->AclSize;
  99     if (dacl_present && dacl)
 100         len += dacl->AclSize;
 101
 102     /* fix alignment for the Unicode name that follows the structure */
 103     len = (len + sizeof(WCHAR) - 1) & ~(sizeof(WCHAR) - 1);
 104     *server_sd = RtlAllocateHeap(GetProcessHeap(), 0, len);
 105     if (!*server_sd) return STATUS_NO_MEMORY;
 106
 107     (*server_sd)->control = ((SECURITY_DESCRIPTOR *)nt_sd)->Control & ~SE_SELF_RELATIVE;
 108     (*server_sd)->owner_len = owner_present ? RtlLengthSid(owner) : 0;
 109     (*server_sd)->group_len = group_present ? RtlLengthSid(group) : 0;
 110     (*server_sd)->sacl_len = (sacl_present && sacl) ? sacl->AclSize : 0;
 111     (*server_sd)->dacl_len = (dacl_present && dacl) ? dacl->AclSize : 0;
 112
 113     ptr = (unsigned char *)(*server_sd + 1);
 114     memcpy(ptr, owner, (*server_sd)->owner_len);
 115     ptr += (*server_sd)->owner_len;
 116     memcpy(ptr, group, (*server_sd)->group_len);
 117     ptr += (*server_sd)->group_len;
 118     memcpy(ptr, sacl, (*server_sd)->sacl_len);
 119     ptr += (*server_sd)->sacl_len;
 120     memcpy(ptr, dacl, (*server_sd)->dacl_len);
 121
 122     *server_sd_len = len;
 123
 124     return STATUS_SUCCESS;
 125 }
 126
 127 /* frees a struct security_descriptor allocated by NTDLL_create_struct_sd */
 128 void NTDLL_free_struct_sd(struct security_descriptor *server_sd)
 129 {
 130     RtlFreeHeap(GetProcessHeap(), 0, server_sd);
 131 }
 132
 133 /*
 134  *      Semaphores
 135  */
 136
 137 /******************************************************************************
 138  *  NtCreateSemaphore (NTDLL.@)
 139  */
 140 NTSTATUS WINAPI NtCreateSemaphore( OUT PHANDLE SemaphoreHandle,
 141                                    IN ACCESS_MASK access,
 142                                    IN const OBJECT_ATTRIBUTES *attr OPTIONAL,
 143                                    IN LONG InitialCount,
 144                                    IN LONG MaximumCount )
 145 {
 146     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 147     NTSTATUS ret;
 148     struct object_attributes objattr;
 149     struct security_descriptor *sd = NULL;
 150
 151     if (MaximumCount <= 0 || InitialCount < 0 || InitialCount > MaximumCount)
 152         return STATUS_INVALID_PARAMETER;
 153     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 154
 155     objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 156     objattr.sd_len = 0;
 157     objattr.name_len = len;
 158     if (attr)
 159     {
 160         ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
 161         if (ret != STATUS_SUCCESS) return ret;
 162     }
 163
 164     SERVER_START_REQ( create_semaphore )
 165     {
 166         req->access  = access;
 167         req->attributes = (attr) ? attr->Attributes : 0;
 168         req->initial = InitialCount;
 169         req->max     = MaximumCount;
 170         wine_server_add_data( req, &objattr, sizeof(objattr) );
 171         if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
 172         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 173         ret = wine_server_call( req );
 174         *SemaphoreHandle = wine_server_ptr_handle( reply->handle );
 175     }
 176     SERVER_END_REQ;
 177
 178     NTDLL_free_struct_sd( sd );
 179
 180     return ret;
 181 }
 182
 183 /******************************************************************************
 184  *  NtOpenSemaphore (NTDLL.@)
 185  */
 186 NTSTATUS WINAPI NtOpenSemaphore( OUT PHANDLE SemaphoreHandle,
 187                                  IN ACCESS_MASK access,
 188                                  IN const OBJECT_ATTRIBUTES *attr )
 189 {
 190     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 191     NTSTATUS ret;
 192
 193     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 194
 195     SERVER_START_REQ( open_semaphore )
 196     {
 197         req->access  = access;
 198         req->attributes = (attr) ? attr->Attributes : 0;
 199         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 200         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 201         ret = wine_server_call( req );
 202         *SemaphoreHandle = wine_server_ptr_handle( reply->handle );
 203     }
 204     SERVER_END_REQ;
 205     return ret;
 206 }
 207
 208 /******************************************************************************
 209  *  NtQuerySemaphore (NTDLL.@)
 210  */
 211 NTSTATUS WINAPI NtQuerySemaphore(
 212         HANDLE SemaphoreHandle,
 213         SEMAPHORE_INFORMATION_CLASS SemaphoreInformationClass,
 214         PVOID SemaphoreInformation,
 215         ULONG Length,
 216         PULONG ReturnLength)
 217 {
 218         FIXME("(%p,%d,%p,0x%08x,%p) stub!\n",
 219         SemaphoreHandle, SemaphoreInformationClass, SemaphoreInformation, Length, ReturnLength);
 220         return STATUS_SUCCESS;
 221 }
 222
 223 /******************************************************************************
 224  *  NtReleaseSemaphore (NTDLL.@)
 225  */
 226 NTSTATUS WINAPI NtReleaseSemaphore( HANDLE handle, ULONG count, PULONG previous )
 227 {
 228     NTSTATUS ret;
 229     SERVER_START_REQ( release_semaphore )
 230     {
 231         req->handle = wine_server_obj_handle( handle );
 232         req->count  = count;
 233         if (!(ret = wine_server_call( req )))
 234         {
 235             if (previous) *previous = reply->prev_count;
 236         }
 237     }
 238     SERVER_END_REQ;
 239     return ret;
 240 }
 241
 242 /*
 243  *      Events
 244  */
 245
 246 /**************************************************************************
 247  * NtCreateEvent (NTDLL.@)
 248  * ZwCreateEvent (NTDLL.@)
 249  */
 250 NTSTATUS WINAPI NtCreateEvent( PHANDLE EventHandle, ACCESS_MASK DesiredAccess,
 251                                const OBJECT_ATTRIBUTES *attr, EVENT_TYPE type, BOOLEAN InitialState)
 252 {
 253     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 254     NTSTATUS ret;
 255     struct security_descriptor *sd = NULL;
 256     struct object_attributes objattr;
 257
 258     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 259
 260     objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 261     objattr.sd_len = 0;
 262     objattr.name_len = len;
 263     if (attr)
 264     {
 265         ret = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
 266         if (ret != STATUS_SUCCESS) return ret;
 267     }
 268
 269     SERVER_START_REQ( create_event )
 270     {
 271         req->access = DesiredAccess;
 272         req->attributes = (attr) ? attr->Attributes : 0;
 273         req->manual_reset = (type == NotificationEvent);
 274         req->initial_state = InitialState;
 275         wine_server_add_data( req, &objattr, sizeof(objattr) );
 276         if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
 277         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 278         ret = wine_server_call( req );
 279         *EventHandle = wine_server_ptr_handle( reply->handle );
 280     }
 281     SERVER_END_REQ;
 282
 283     NTDLL_free_struct_sd( sd );
 284
 285     return ret;
 286 }
 287
 288 /******************************************************************************
 289  *  NtOpenEvent (NTDLL.@)
 290  *  ZwOpenEvent (NTDLL.@)
 291  */
 292 NTSTATUS WINAPI NtOpenEvent(
 293         OUT PHANDLE EventHandle,
 294         IN ACCESS_MASK DesiredAccess,
 295         IN const OBJECT_ATTRIBUTES *attr )
 296 {
 297     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 298     NTSTATUS ret;
 299
 300     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 301
 302     SERVER_START_REQ( open_event )
 303     {
 304         req->access  = DesiredAccess;
 305         req->attributes = (attr) ? attr->Attributes : 0;
 306         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 307         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 308         ret = wine_server_call( req );
 309         *EventHandle = wine_server_ptr_handle( reply->handle );
 310     }
 311     SERVER_END_REQ;
 312     return ret;
 313 }
 314
 315
 316 /******************************************************************************
 317  *  NtSetEvent (NTDLL.@)
 318  *  ZwSetEvent (NTDLL.@)
 319  */
 320 NTSTATUS WINAPI NtSetEvent( HANDLE handle, PULONG NumberOfThreadsReleased )
 321 {
 322     NTSTATUS ret;
 323
 324     /* FIXME: set NumberOfThreadsReleased */
 325
 326     SERVER_START_REQ( event_op )
 327     {
 328         req->handle = wine_server_obj_handle( handle );
 329         req->op     = SET_EVENT;
 330         ret = wine_server_call( req );
 331     }
 332     SERVER_END_REQ;
 333     return ret;
 334 }
 335
 336 /******************************************************************************
 337  *  NtResetEvent (NTDLL.@)
 338  */
 339 NTSTATUS WINAPI NtResetEvent( HANDLE handle, PULONG NumberOfThreadsReleased )
 340 {
 341     NTSTATUS ret;
 342
 343     /* resetting an event can't release any thread... */
 344     if (NumberOfThreadsReleased) *NumberOfThreadsReleased = 0;
 345
 346     SERVER_START_REQ( event_op )
 347     {
 348         req->handle = wine_server_obj_handle( handle );
 349         req->op     = RESET_EVENT;
 350         ret = wine_server_call( req );
 351     }
 352     SERVER_END_REQ;
 353     return ret;
 354 }
 355
 356 /******************************************************************************
 357  *  NtClearEvent (NTDLL.@)
 358  *
 359  * FIXME
 360  *   same as NtResetEvent ???
 361  */
 362 NTSTATUS WINAPI NtClearEvent ( HANDLE handle )
 363 {
 364     return NtResetEvent( handle, NULL );
 365 }
 366
 367 /******************************************************************************
 368  *  NtPulseEvent (NTDLL.@)
 369  *
 370  * FIXME
 371  *   PulseCount
 372  */
 373 NTSTATUS WINAPI NtPulseEvent( HANDLE handle, PULONG PulseCount )
 374 {
 375     NTSTATUS ret;
 376
 377     if (PulseCount)
 378       FIXME("(%p,%d)\n", handle, *PulseCount);
 379
 380     SERVER_START_REQ( event_op )
 381     {
 382         req->handle = wine_server_obj_handle( handle );
 383         req->op     = PULSE_EVENT;
 384         ret = wine_server_call( req );
 385     }
 386     SERVER_END_REQ;
 387     return ret;
 388 }
 389
 390 /******************************************************************************
 391  *  NtQueryEvent (NTDLL.@)
 392  */
 393 NTSTATUS WINAPI NtQueryEvent (
 394         IN  HANDLE EventHandle,
 395         IN  EVENT_INFORMATION_CLASS EventInformationClass,
 396         OUT PVOID EventInformation,
 397         IN  ULONG EventInformationLength,
 398         OUT PULONG  ReturnLength)
 399 {
 400         FIXME("(%p)\n", EventHandle);
 401         return STATUS_NOT_IMPLEMENTED;
 402 }
 403
 404 /*
 405  *      Mutants (known as Mutexes in Kernel32)
 406  */
 407
 408 /******************************************************************************
 409  *              NtCreateMutant                          [NTDLL.@]
 410  *              ZwCreateMutant                          [NTDLL.@]
 411  */
 412 NTSTATUS WINAPI NtCreateMutant(OUT HANDLE* MutantHandle,
 413                                IN ACCESS_MASK access,
 414                                IN const OBJECT_ATTRIBUTES* attr OPTIONAL,
 415                                IN BOOLEAN InitialOwner)
 416 {
 417     NTSTATUS status;
 418     DWORD len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 419     struct security_descriptor *sd = NULL;
 420     struct object_attributes objattr;
 421
 422     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 423
 424     objattr.rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 425     objattr.sd_len = 0;
 426     objattr.name_len = len;
 427     if (attr)
 428     {
 429         status = NTDLL_create_struct_sd( attr->SecurityDescriptor, &sd, &objattr.sd_len );
 430         if (status != STATUS_SUCCESS) return status;
 431     }
 432
 433     SERVER_START_REQ( create_mutex )
 434     {
 435         req->access  = access;
 436         req->attributes = (attr) ? attr->Attributes : 0;
 437         req->owned   = InitialOwner;
 438         wine_server_add_data( req, &objattr, sizeof(objattr) );
 439         if (objattr.sd_len) wine_server_add_data( req, sd, objattr.sd_len );
 440         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 441         status = wine_server_call( req );
 442         *MutantHandle = wine_server_ptr_handle( reply->handle );
 443     }
 444     SERVER_END_REQ;
 445
 446     NTDLL_free_struct_sd( sd );
 447
 448     return status;
 449 }
 450
 451 /**************************************************************************
 452  *              NtOpenMutant                            [NTDLL.@]
 453  *              ZwOpenMutant                            [NTDLL.@]
 454  */
 455 NTSTATUS WINAPI NtOpenMutant(OUT HANDLE* MutantHandle,
 456                              IN ACCESS_MASK access,
 457                              IN const OBJECT_ATTRIBUTES* attr )
 458 {
 459     NTSTATUS    status;
 460     DWORD       len = attr && attr->ObjectName ? attr->ObjectName->Length : 0;
 461
 462     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 463
 464     SERVER_START_REQ( open_mutex )
 465     {
 466         req->access  = access;
 467         req->attributes = (attr) ? attr->Attributes : 0;
 468         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 469         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 470         status = wine_server_call( req );
 471         *MutantHandle = wine_server_ptr_handle( reply->handle );
 472     }
 473     SERVER_END_REQ;
 474     return status;
 475 }
 476
 477 /**************************************************************************
 478  *              NtReleaseMutant                         [NTDLL.@]
 479  *              ZwReleaseMutant                         [NTDLL.@]
 480  */
 481 NTSTATUS WINAPI NtReleaseMutant( IN HANDLE handle, OUT PLONG prev_count OPTIONAL)
 482 {
 483     NTSTATUS    status;
 484
 485     SERVER_START_REQ( release_mutex )
 486     {
 487         req->handle = wine_server_obj_handle( handle );
 488         status = wine_server_call( req );
 489         if (prev_count) *prev_count = reply->prev_count;
 490     }
 491     SERVER_END_REQ;
 492     return status;
 493 }
 494
 495 /******************************************************************
 496  *              NtQueryMutant                   [NTDLL.@]
 497  *              ZwQueryMutant                   [NTDLL.@]
 498  */
 499 NTSTATUS WINAPI NtQueryMutant(IN HANDLE handle,
 500                               IN MUTANT_INFORMATION_CLASS MutantInformationClass,
 501                               OUT PVOID MutantInformation,
 502                               IN ULONG MutantInformationLength,
 503                               OUT PULONG ResultLength OPTIONAL )
 504 {
 505     FIXME("(%p %u %p %u %p): stub!\n",
 506           handle, MutantInformationClass, MutantInformation, MutantInformationLength, ResultLength);
 507     return STATUS_NOT_IMPLEMENTED;
 508 }
 509
 510 /*
 511  *      Jobs
 512  */
 513
 514 /******************************************************************************
 515  *              NtCreateJobObject   [NTDLL.@]
 516  *              ZwCreateJobObject   [NTDLL.@]
 517  */
 518 NTSTATUS WINAPI NtCreateJobObject( PHANDLE handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
 519 {
 520     FIXME( "stub: %p %x %s\n", handle, access, attr ? debugstr_us(attr->ObjectName) : "" );
 521     *handle = (HANDLE)0xdead;
 522     return STATUS_SUCCESS;
 523 }
 524
 525 /******************************************************************************
 526  *              NtOpenJobObject   [NTDLL.@]
 527  *              ZwOpenJobObject   [NTDLL.@]
 528  */
 529 NTSTATUS WINAPI NtOpenJobObject( PHANDLE handle, ACCESS_MASK access, const OBJECT_ATTRIBUTES *attr )
 530 {
 531     FIXME( "stub: %p %x %s\n", handle, access, attr ? debugstr_us(attr->ObjectName) : "" );
 532     return STATUS_NOT_IMPLEMENTED;
 533 }
 534
 535 /******************************************************************************
 536  *              NtTerminateJobObject   [NTDLL.@]
 537  *              ZwTerminateJobObject   [NTDLL.@]
 538  */
 539 NTSTATUS WINAPI NtTerminateJobObject( HANDLE handle, NTSTATUS status )
 540 {
 541     FIXME( "stub: %p %x\n", handle, status );
 542     return STATUS_SUCCESS;
 543 }
 544
 545 /******************************************************************************
 546  *              NtQueryInformationJobObject   [NTDLL.@]
 547  *              ZwQueryInformationJobObject   [NTDLL.@]
 548  */
 549 NTSTATUS WINAPI NtQueryInformationJobObject( HANDLE handle, JOBOBJECTINFOCLASS class, PVOID info,
 550                                              ULONG len, PULONG ret_len )
 551 {
 552     FIXME( "stub: %p %u %p %u %p\n", handle, class, info, len, ret_len );
 553     return STATUS_NOT_IMPLEMENTED;
 554 }
 555
 556 /******************************************************************************
 557  *              NtSetInformationJobObject   [NTDLL.@]
 558  *              ZwSetInformationJobObject   [NTDLL.@]
 559  */
 560 NTSTATUS WINAPI NtSetInformationJobObject( HANDLE handle, JOBOBJECTINFOCLASS class, PVOID info, ULONG len )
 561 {
 562     FIXME( "stub: %p %u %p %u\n", handle, class, info, len );
 563     return STATUS_SUCCESS;
 564 }
 565
 566 /******************************************************************************
 567  *              NtIsProcessInJob   [NTDLL.@]
 568  *              ZwIsProcessInJob   [NTDLL.@]
 569  */
 570 NTSTATUS WINAPI NtIsProcessInJob( HANDLE process, HANDLE job )
 571 {
 572     FIXME( "stub: %p %p\n", process, job );
 573     return STATUS_PROCESS_NOT_IN_JOB;
 574 }
 575
 576 /******************************************************************************
 577  *              NtAssignProcessToJobObject   [NTDLL.@]
 578  *              ZwAssignProcessToJobObject   [NTDLL.@]
 579  */
 580 NTSTATUS WINAPI NtAssignProcessToJobObject( HANDLE job, HANDLE process )
 581 {
 582     FIXME( "stub: %p %p\n", job, process );
 583     return STATUS_SUCCESS;
 584 }
 585
 586 /*
 587  *      Timers
 588  */
 589
 590 /**************************************************************************
 591  *              NtCreateTimer                           [NTDLL.@]
 592  *              ZwCreateTimer                           [NTDLL.@]
 593  */
 594 NTSTATUS WINAPI NtCreateTimer(OUT HANDLE *handle,
 595                               IN ACCESS_MASK access,
 596                               IN const OBJECT_ATTRIBUTES *attr OPTIONAL,
 597                               IN TIMER_TYPE timer_type)
 598 {
 599     DWORD       len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
 600     NTSTATUS    status;
 601
 602     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 603
 604     if (timer_type != NotificationTimer && timer_type != SynchronizationTimer)
 605         return STATUS_INVALID_PARAMETER;
 606
 607     SERVER_START_REQ( create_timer )
 608     {
 609         req->access  = access;
 610         req->attributes = (attr) ? attr->Attributes : 0;
 611         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 612         req->manual  = (timer_type == NotificationTimer) ? TRUE : FALSE;
 613         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 614         status = wine_server_call( req );
 615         *handle = wine_server_ptr_handle( reply->handle );
 616     }
 617     SERVER_END_REQ;
 618     return status;
 619
 620 }
 621
 622 /**************************************************************************
 623  *              NtOpenTimer                             [NTDLL.@]
 624  *              ZwOpenTimer                             [NTDLL.@]
 625  */
 626 NTSTATUS WINAPI NtOpenTimer(OUT PHANDLE handle,
 627                             IN ACCESS_MASK access,
 628                             IN const OBJECT_ATTRIBUTES* attr )
 629 {
 630     DWORD       len = (attr && attr->ObjectName) ? attr->ObjectName->Length : 0;
 631     NTSTATUS    status;
 632
 633     if (len >= MAX_PATH * sizeof(WCHAR)) return STATUS_NAME_TOO_LONG;
 634
 635     SERVER_START_REQ( open_timer )
 636     {
 637         req->access  = access;
 638         req->attributes = (attr) ? attr->Attributes : 0;
 639         req->rootdir = wine_server_obj_handle( attr ? attr->RootDirectory : 0 );
 640         if (len) wine_server_add_data( req, attr->ObjectName->Buffer, len );
 641         status = wine_server_call( req );
 642         *handle = wine_server_ptr_handle( reply->handle );
 643     }
 644     SERVER_END_REQ;
 645     return status;
 646 }
 647
 648 /**************************************************************************
 649  *              NtSetTimer                              [NTDLL.@]
 650  *              ZwSetTimer                              [NTDLL.@]
 651  */
 652 NTSTATUS WINAPI NtSetTimer(IN HANDLE handle,
 653                            IN const LARGE_INTEGER* when,
 654                            IN PTIMER_APC_ROUTINE callback,
 655                            IN PVOID callback_arg,
 656                            IN BOOLEAN resume,
 657                            IN ULONG period OPTIONAL,
 658                            OUT PBOOLEAN state OPTIONAL)
 659 {
 660     NTSTATUS    status = STATUS_SUCCESS;
 661
 662     TRACE("(%p,%p,%p,%p,%08x,0x%08x,%p) stub\n",
 663           handle, when, callback, callback_arg, resume, period, state);
 664
 665     SERVER_START_REQ( set_timer )
 666     {
 667         req->handle   = wine_server_obj_handle( handle );
 668         req->period   = period;
 669         req->expire   = when->QuadPart;
 670         req->callback = wine_server_client_ptr( callback );
 671         req->arg      = wine_server_client_ptr( callback_arg );
 672         status = wine_server_call( req );
 673         if (state) *state = reply->signaled;
 674     }
 675     SERVER_END_REQ;
 676
 677     /* set error but can still succeed */
 678     if (resume && status == STATUS_SUCCESS) return STATUS_TIMER_RESUME_IGNORED;
 679     return status;
 680 }
 681
 682 /**************************************************************************
 683  *              NtCancelTimer                           [NTDLL.@]
 684  *              ZwCancelTimer                           [NTDLL.@]
 685  */
 686 NTSTATUS WINAPI NtCancelTimer(IN HANDLE handle, OUT BOOLEAN* state)
 687 {
 688     NTSTATUS    status;
 689
 690     SERVER_START_REQ( cancel_timer )
 691     {
 692         req->handle = wine_server_obj_handle( handle );
 693         status = wine_server_call( req );
 694         if (state) *state = reply->signaled;
 695     }
 696     SERVER_END_REQ;
 697     return status;
 698 }
 699
 700 /******************************************************************************
 701  *  NtQueryTimer (NTDLL.@)
 702  *
 703  * Retrieves information about a timer.
 704  *
 705  * PARAMS
 706  *  TimerHandle           [I] The timer to retrieve information about.
 707  *  TimerInformationClass [I] The type of information to retrieve.
 708  *  TimerInformation      [O] Pointer to buffer to store information in.
 709  *  Length                [I] The length of the buffer pointed to by TimerInformation.
 710  *  ReturnLength          [O] Optional. The size of buffer actually used.
 711  *
 712  * RETURNS
 713  *  Success: STATUS_SUCCESS
 714  *  Failure: STATUS_INFO_LENGTH_MISMATCH, if Length doesn't match the required data
 715  *           size for the class specified.
 716  *           STATUS_INVALID_INFO_CLASS, if an invalid TimerInformationClass was specified.
 717  *           STATUS_ACCESS_DENIED, if TimerHandle does not have TIMER_QUERY_STATE access
 718  *           to the timer.
 719  */
 720 NTSTATUS WINAPI NtQueryTimer(
 721     HANDLE TimerHandle,
 722     TIMER_INFORMATION_CLASS TimerInformationClass,
 723     PVOID TimerInformation,
 724     ULONG Length,
 725     PULONG ReturnLength)
 726 {
 727     TIMER_BASIC_INFORMATION * basic_info = TimerInformation;
 728     NTSTATUS status;
 729     LARGE_INTEGER now;
 730
 731     TRACE("(%p,%d,%p,0x%08x,%p)\n", TimerHandle, TimerInformationClass,
 732        TimerInformation, Length, ReturnLength);
 733
 734     switch (TimerInformationClass)
 735     {
 736     case TimerBasicInformation:
 737         if (Length < sizeof(TIMER_BASIC_INFORMATION))
 738             return STATUS_INFO_LENGTH_MISMATCH;
 739
 740         SERVER_START_REQ(get_timer_info)
 741         {
 742             req->handle = wine_server_obj_handle( TimerHandle );
 743             status = wine_server_call(req);
 744
 745             /* convert server time to absolute NTDLL time */
 746             basic_info->RemainingTime.QuadPart = reply->when;
 747             basic_info->TimerState = reply->signaled;
 748         }
 749         SERVER_END_REQ;
 750
 751         /* convert from absolute into relative time */
 752         NtQuerySystemTime(&now);
 753         if (now.QuadPart > basic_info->RemainingTime.QuadPart)
 754             basic_info->RemainingTime.QuadPart = 0;
 755         else
 756             basic_info->RemainingTime.QuadPart -= now.QuadPart;
 757
 758         if (ReturnLength) *ReturnLength = sizeof(TIMER_BASIC_INFORMATION);
 759
 760         return status;
 761     }
 762
 763     FIXME("Unhandled class %d\n", TimerInformationClass);
 764     return STATUS_INVALID_INFO_CLASS;
 765 }
 766
 767
 768 /******************************************************************************
 769  * NtQueryTimerResolution [NTDLL.@]
 770  */
 771 NTSTATUS WINAPI NtQueryTimerResolution(OUT ULONG* min_resolution,
 772                                        OUT ULONG* max_resolution,
 773                                        OUT ULONG* current_resolution)
 774 {
 775     FIXME("(%p,%p,%p), stub!\n",
 776           min_resolution, max_resolution, current_resolution);
 777
 778     return STATUS_NOT_IMPLEMENTED;
 779 }
 780
 781 /******************************************************************************
 782  * NtSetTimerResolution [NTDLL.@]
 783  */
 784 NTSTATUS WINAPI NtSetTimerResolution(IN ULONG resolution,
 785                                      IN BOOLEAN set_resolution,
 786                                      OUT ULONG* current_resolution )
 787 {
 788     FIXME("(%u,%u,%p), stub!\n",
 789           resolution, set_resolution, current_resolution);
 790
 791     return STATUS_NOT_IMPLEMENTED;
 792 }
 793
 794
 795 /***********************************************************************
 796  *              wait_reply
 797  *
 798  * Wait for a reply on the waiting pipe of the current thread.
 799  */
 800 static int wait_reply( void *cookie )
 801 {
 802     int signaled;
 803     struct wake_up_reply reply;
 804     for (;;)
 805     {
 806         int ret;
 807         ret = read( ntdll_get_thread_data()->wait_fd[0], &reply, sizeof(reply) );
 808         if (ret == sizeof(reply))
 809         {
 810             if (!reply.cookie) break;  /* thread got killed */
 811             if (wine_server_get_ptr(reply.cookie) == cookie) return reply.signaled;
 812             /* we stole another reply, wait for the real one */
 813             signaled = wait_reply( cookie );
 814             /* and now put the wrong one back in the pipe */
 815             for (;;)
 816             {
 817                 ret = write( ntdll_get_thread_data()->wait_fd[1], &reply, sizeof(reply) );
 818                 if (ret == sizeof(reply)) break;
 819                 if (ret >= 0) server_protocol_error( "partial wakeup write %d\n", ret );
 820                 if (errno == EINTR) continue;
 821                 server_protocol_perror("wakeup write");
 822             }
 823             return signaled;
 824         }
 825         if (ret >= 0) server_protocol_error( "partial wakeup read %d\n", ret );
 826         if (errno == EINTR) continue;
 827         server_protocol_perror("wakeup read");
 828     }
 829     /* the server closed the connection; time to die... */
 830     abort_thread(0);
 831 }
 832
 833
 834 /***********************************************************************
 835  *              invoke_apc
 836  *
 837  * Invoke a single APC. Return TRUE if a user APC has been run.
 838  */
 839 static BOOL invoke_apc( const apc_call_t *call, apc_result_t *result )
 840 {
 841     BOOL user_apc = FALSE;
 842     SIZE_T size;
 843     void *addr;
 844
 845     memset( result, 0, sizeof(*result) );
 846
 847     switch (call->type)
 848     {
 849     case APC_NONE:
 850         break;
 851     case APC_USER:
 852     {
 853         void (WINAPI *func)(ULONG_PTR,ULONG_PTR,ULONG_PTR) = wine_server_get_ptr( call->user.func );
 854         func( call->user.args[0], call->user.args[1], call->user.args[2] );
 855         user_apc = TRUE;
 856         break;
 857     }
 858     case APC_TIMER:
 859     {
 860         void (WINAPI *func)(void*, unsigned int, unsigned int) = wine_server_get_ptr( call->timer.func );
 861         func( wine_server_get_ptr( call->timer.arg ),
 862               (DWORD)call->timer.time, (DWORD)(call->timer.time >> 32) );
 863         user_apc = TRUE;
 864         break;
 865     }
 866     case APC_ASYNC_IO:
 867     {
 868         void *apc = NULL;
 869         IO_STATUS_BLOCK *iosb = wine_server_get_ptr( call->async_io.sb );
 870         NTSTATUS (*func)(void *, IO_STATUS_BLOCK *, NTSTATUS, void **) = wine_server_get_ptr( call->async_io.func );
 871         result->type = call->type;
 872         result->async_io.status = func( wine_server_get_ptr( call->async_io.user ),
 873                                         iosb, call->async_io.status, &apc );
 874         if (result->async_io.status != STATUS_PENDING)
 875         {
 876             result->async_io.total = iosb->Information;
 877             result->async_io.apc   = wine_server_client_ptr( apc );
 878         }
 879         break;
 880     }
 881     case APC_VIRTUAL_ALLOC:
 882         result->type = call->type;
 883         addr = wine_server_get_ptr( call->virtual_alloc.addr );
 884         size = call->virtual_alloc.size;
 885         if ((ULONG_PTR)addr == call->virtual_alloc.addr && size == call->virtual_alloc.size)
 886         {
 887             result->virtual_alloc.status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr,
 888                                                                     call->virtual_alloc.zero_bits, &size,
 889                                                                     call->virtual_alloc.op_type,
 890                                                                     call->virtual_alloc.prot );
 891             result->virtual_alloc.addr = wine_server_client_ptr( addr );
 892             result->virtual_alloc.size = size;
 893         }
 894         else result->virtual_alloc.status = STATUS_WORKING_SET_LIMIT_RANGE;
 895         break;
 896     case APC_VIRTUAL_FREE:
 897         result->type = call->type;
 898         addr = wine_server_get_ptr( call->virtual_free.addr );
 899         size = call->virtual_free.size;
 900         if ((ULONG_PTR)addr == call->virtual_free.addr && size == call->virtual_free.size)
 901         {
 902             result->virtual_free.status = NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size,
 903                                                                call->virtual_free.op_type );
 904             result->virtual_free.addr = wine_server_client_ptr( addr );
 905             result->virtual_free.size = size;
 906         }
 907         else result->virtual_free.status = STATUS_INVALID_PARAMETER;
 908         break;
 909     case APC_VIRTUAL_QUERY:
 910     {
 911         MEMORY_BASIC_INFORMATION info;
 912         result->type = call->type;
 913         addr = wine_server_get_ptr( call->virtual_query.addr );
 914         if ((ULONG_PTR)addr == call->virtual_query.addr)
 915             result->virtual_query.status = NtQueryVirtualMemory( NtCurrentProcess(),
 916                                                                  addr, MemoryBasicInformation, &info,
 917                                                                  sizeof(info), NULL );
 918         else
 919             result->virtual_query.status = STATUS_WORKING_SET_LIMIT_RANGE;
 920
 921         if (result->virtual_query.status == STATUS_SUCCESS)
 922         {
 923             result->virtual_query.base       = wine_server_client_ptr( info.BaseAddress );
 924             result->virtual_query.alloc_base = wine_server_client_ptr( info.AllocationBase );
 925             result->virtual_query.size       = info.RegionSize;
 926             result->virtual_query.prot       = info.Protect;
 927             result->virtual_query.alloc_prot = info.AllocationProtect;
 928             result->virtual_query.state      = info.State >> 12;
 929             result->virtual_query.alloc_type = info.Type >> 16;
 930         }
 931         break;
 932     }
 933     case APC_VIRTUAL_PROTECT:
 934         result->type = call->type;
 935         addr = wine_server_get_ptr( call->virtual_protect.addr );
 936         size = call->virtual_protect.size;
 937         if ((ULONG_PTR)addr == call->virtual_protect.addr && size == call->virtual_protect.size)
 938         {
 939             result->virtual_protect.status = NtProtectVirtualMemory( NtCurrentProcess(), &addr, &size,
 940                                                                      call->virtual_protect.prot,
 941                                                                      &result->virtual_protect.prot );
 942             result->virtual_protect.addr = wine_server_client_ptr( addr );
 943             result->virtual_protect.size = size;
 944         }
 945         else result->virtual_protect.status = STATUS_INVALID_PARAMETER;
 946         break;
 947     case APC_VIRTUAL_FLUSH:
 948         result->type = call->type;
 949         addr = wine_server_get_ptr( call->virtual_flush.addr );
 950         size = call->virtual_flush.size;
 951         if ((ULONG_PTR)addr == call->virtual_flush.addr && size == call->virtual_flush.size)
 952         {
 953             result->virtual_flush.status = NtFlushVirtualMemory( NtCurrentProcess(),
 954                                                                  (const void **)&addr, &size, 0 );
 955             result->virtual_flush.addr = wine_server_client_ptr( addr );
 956             result->virtual_flush.size = size;
 957         }
 958         else result->virtual_flush.status = STATUS_INVALID_PARAMETER;
 959         break;
 960     case APC_VIRTUAL_LOCK:
 961         result->type = call->type;
 962         addr = wine_server_get_ptr( call->virtual_lock.addr );
 963         size = call->virtual_lock.size;
 964         if ((ULONG_PTR)addr == call->virtual_lock.addr && size == call->virtual_lock.size)
 965         {
 966             result->virtual_lock.status = NtLockVirtualMemory( NtCurrentProcess(), &addr, &size, 0 );
 967             result->virtual_lock.addr = wine_server_client_ptr( addr );
 968             result->virtual_lock.size = size;
 969         }
 970         else result->virtual_lock.status = STATUS_INVALID_PARAMETER;
 971         break;
 972     case APC_VIRTUAL_UNLOCK:
 973         result->type = call->type;
 974         addr = wine_server_get_ptr( call->virtual_unlock.addr );
 975         size = call->virtual_unlock.size;
 976         if ((ULONG_PTR)addr == call->virtual_unlock.addr && size == call->virtual_unlock.size)
 977         {
 978             result->virtual_unlock.status = NtUnlockVirtualMemory( NtCurrentProcess(), &addr, &size, 0 );
 979             result->virtual_unlock.addr = wine_server_client_ptr( addr );
 980             result->virtual_unlock.size = size;
 981         }
 982         else result->virtual_unlock.status = STATUS_INVALID_PARAMETER;
 983         break;
 984     case APC_MAP_VIEW:
 985         result->type = call->type;
 986         addr = wine_server_get_ptr( call->map_view.addr );
 987         size = call->map_view.size;
 988         if ((ULONG_PTR)addr == call->map_view.addr && size == call->map_view.size)
 989         {
 990             LARGE_INTEGER offset;
 991             offset.QuadPart = call->map_view.offset;
 992             result->map_view.status = NtMapViewOfSection( wine_server_ptr_handle(call->map_view.handle),
 993                                                           NtCurrentProcess(), &addr,
 994                                                           call->map_view.zero_bits, 0,
 995                                                           &offset, &size, ViewShare,
 996                                                           call->map_view.alloc_type, call->map_view.prot );
 997             result->map_view.addr = wine_server_client_ptr( addr );
 998             result->map_view.size = size;
 999         }
1000         else result->map_view.status = STATUS_INVALID_PARAMETER;
1001         NtClose( wine_server_ptr_handle(call->map_view.handle) );
1002         break;
1003     case APC_UNMAP_VIEW:
1004         result->type = call->type;
1005         addr = wine_server_get_ptr( call->unmap_view.addr );
1006         if ((ULONG_PTR)addr == call->unmap_view.addr)
1007             result->unmap_view.status = NtUnmapViewOfSection( NtCurrentProcess(), addr );
1008         else
1009             result->unmap_view.status = STATUS_INVALID_PARAMETER;
1010         break;
1011     case APC_CREATE_THREAD:
1012     {
1013         CLIENT_ID id;
1014         HANDLE handle;
1015         SIZE_T reserve = call->create_thread.reserve;
1016         SIZE_T commit = call->create_thread.commit;
1017         void *func = wine_server_get_ptr( call->create_thread.func );
1018         void *arg  = wine_server_get_ptr( call->create_thread.arg );
1019
1020         result->type = call->type;
1021         if (reserve == call->create_thread.reserve && commit == call->create_thread.commit &&
1022             (ULONG_PTR)func == call->create_thread.func && (ULONG_PTR)arg == call->create_thread.arg)
1023         {
1024             result->create_thread.status = RtlCreateUserThread( NtCurrentProcess(), NULL,
1025                                                                 call->create_thread.suspend, NULL,
1026                                                                 reserve, commit, func, arg, &handle, &id );
1027             result->create_thread.handle = wine_server_obj_handle( handle );
1028             result->create_thread.tid = HandleToULong(id.UniqueThread);
1029         }
1030         else result->create_thread.status = STATUS_INVALID_PARAMETER;
1031         break;
1032     }
1033     default:
1034         server_protocol_error( "get_apc_request: bad type %d\n", call->type );
1035         break;
1036     }
1037     return user_apc;
1038 }
1039
1040 /***********************************************************************
1041  *           NTDLL_queue_process_apc
1042  */
1043 NTSTATUS NTDLL_queue_process_apc( HANDLE process, const apc_call_t *call, apc_result_t *result )
1044 {
1045     for (;;)
1046     {
1047         NTSTATUS ret;
1048         HANDLE handle = 0;
1049         BOOL self = FALSE;
1050
1051         SERVER_START_REQ( queue_apc )
1052         {
1053             req->handle = wine_server_obj_handle( process );
1054             req->call = *call;
1055             if (!(ret = wine_server_call( req )))
1056             {
1057                 handle = wine_server_ptr_handle( reply->handle );
1058                 self = reply->self;
1059             }
1060         }
1061         SERVER_END_REQ;
1062         if (ret != STATUS_SUCCESS) return ret;
1063
1064         if (self)
1065         {
1066             invoke_apc( call, result );
1067         }
1068         else
1069         {
1070             NtWaitForSingleObject( handle, FALSE, NULL );
1071
1072             SERVER_START_REQ( get_apc_result )
1073             {
1074                 req->handle = wine_server_obj_handle( handle );
1075                 if (!(ret = wine_server_call( req ))) *result = reply->result;
1076             }
1077             SERVER_END_REQ;
1078
1079             if (!ret && result->type == APC_NONE) continue;  /* APC didn't run, try again */
1080             if (ret) NtClose( handle );
1081         }
1082         return ret;
1083     }
1084 }
1085
1086
1087 /***********************************************************************
1088  *              NTDLL_wait_for_multiple_objects
1089  *
1090  * Implementation of NtWaitForMultipleObjects
1091  */
1092 NTSTATUS NTDLL_wait_for_multiple_objects( UINT count, const HANDLE *handles, UINT flags,
1093                                           const LARGE_INTEGER *timeout, HANDLE signal_object )
1094 {
1095     NTSTATUS ret;
1096     int i, cookie;
1097     BOOL user_apc = FALSE;
1098     obj_handle_t obj_handles[MAXIMUM_WAIT_OBJECTS];
1099     obj_handle_t apc_handle = 0;
1100     apc_call_t call;
1101     apc_result_t result;
1102     timeout_t abs_timeout = timeout ? timeout->QuadPart : TIMEOUT_INFINITE;
1103
1104     memset( &result, 0, sizeof(result) );
1105     for (i = 0; i < count; i++) obj_handles[i] = wine_server_obj_handle( handles[i] );
1106
1107     for (;;)
1108     {
1109         SERVER_START_REQ( select )
1110         {
1111             req->flags    = flags;
1112             req->cookie   = wine_server_client_ptr( &cookie );
1113             req->signal   = wine_server_obj_handle( signal_object );
1114             req->prev_apc = apc_handle;
1115             req->timeout  = abs_timeout;
1116             wine_server_add_data( req, &result, sizeof(result) );
1117             wine_server_add_data( req, obj_handles, count * sizeof(*obj_handles) );
1118             ret = wine_server_call( req );
1119             abs_timeout = reply->timeout;
1120             apc_handle  = reply->apc_handle;
1121             call        = reply->call;
1122         }
1123         SERVER_END_REQ;
1124         if (ret == STATUS_PENDING) ret = wait_reply( &cookie );
1125         if (ret != STATUS_USER_APC) break;
1126         if (invoke_apc( &call, &result ))
1127         {
1128             /* if we ran a user apc we have to check once more if an object got signaled,
1129              * but we don't want to wait */
1130             abs_timeout = 0;
1131             user_apc = TRUE;
1132         }
1133         signal_object = 0;  /* don't signal it multiple times */
1134     }
1135
1136     if (ret == STATUS_TIMEOUT && user_apc) ret = STATUS_USER_APC;
1137
1138     /* A test on Windows 2000 shows that Windows always yields during
1139        a wait, but a wait that is hit by an event gets a priority
1140        boost as well.  This seems to model that behavior the closest.  */
1141     if (ret == STATUS_TIMEOUT) NtYieldExecution();
1142
1143     return ret;
1144 }
1145
1146
1147 /* wait operations */
1148
1149 /******************************************************************
1150  *              NtWaitForMultipleObjects (NTDLL.@)
1151  */
1152 NTSTATUS WINAPI NtWaitForMultipleObjects( DWORD count, const HANDLE *handles,
1153                                           BOOLEAN wait_all, BOOLEAN alertable,
1154                                           const LARGE_INTEGER *timeout )
1155 {
1156     UINT flags = SELECT_INTERRUPTIBLE;
1157
1158     if (!count || count > MAXIMUM_WAIT_OBJECTS) return STATUS_INVALID_PARAMETER_1;
1159
1160     if (wait_all) flags |= SELECT_ALL;
1161     if (alertable) flags |= SELECT_ALERTABLE;
1162     return NTDLL_wait_for_multiple_objects( count, handles, flags, timeout, 0 );
1163 }
1164
1165
1166 /******************************************************************
1167  *              NtWaitForSingleObject (NTDLL.@)
1168  */
1169 NTSTATUS WINAPI NtWaitForSingleObject(HANDLE handle, BOOLEAN alertable, const LARGE_INTEGER *timeout )
1170 {
1171     return NtWaitForMultipleObjects( 1, &handle, FALSE, alertable, timeout );
1172 }
1173
1174
1175 /******************************************************************
1176  *              NtSignalAndWaitForSingleObject (NTDLL.@)
1177  */
1178 NTSTATUS WINAPI NtSignalAndWaitForSingleObject( HANDLE hSignalObject, HANDLE hWaitObject,
1179                                                 BOOLEAN alertable, const LARGE_INTEGER *timeout )
1180 {
1181     UINT flags = SELECT_INTERRUPTIBLE;
1182
1183     if (!hSignalObject) return STATUS_INVALID_HANDLE;
1184     if (alertable) flags |= SELECT_ALERTABLE;
1185     return NTDLL_wait_for_multiple_objects( 1, &hWaitObject, flags, timeout, hSignalObject );
1186 }
1187
1188
1189 /******************************************************************
1190  *              NtYieldExecution (NTDLL.@)
1191  */
1192 NTSTATUS WINAPI NtYieldExecution(void)
1193 {
1194 #ifdef HAVE_SCHED_YIELD
1195     sched_yield();
1196     return STATUS_SUCCESS;
1197 #else
1198     return STATUS_NO_YIELD_PERFORMED;
1199 #endif
1200 }
1201
1202
1203 /******************************************************************
1204  *              NtDelayExecution (NTDLL.@)
1205  */
1206 NTSTATUS WINAPI NtDelayExecution( BOOLEAN alertable, const LARGE_INTEGER *timeout )
1207 {
1208     /* if alertable, we need to query the server */
1209     if (alertable)
1210         return NTDLL_wait_for_multiple_objects( 0, NULL, SELECT_INTERRUPTIBLE | SELECT_ALERTABLE,
1211                                                 timeout, 0 );
1212
1213     if (!timeout || timeout->QuadPart == TIMEOUT_INFINITE)  /* sleep forever */
1214     {
1215         for (;;) select( 0, NULL, NULL, NULL, NULL );
1216     }
1217     else
1218     {
1219         LARGE_INTEGER now;
1220         timeout_t when, diff;
1221
1222         if ((when = timeout->QuadPart) < 0)
1223         {
1224             NtQuerySystemTime( &now );
1225             when = now.QuadPart - when;
1226         }
1227
1228         /* Note that we yield after establishing the desired timeout */
1229         NtYieldExecution();
1230         if (!when) return STATUS_SUCCESS;
1231
1232         for (;;)
1233         {
1234             struct timeval tv;
1235             NtQuerySystemTime( &now );
1236             diff = (when - now.QuadPart + 9) / 10;
1237             if (diff <= 0) break;
1238             tv.tv_sec  = diff / 1000000;
1239             tv.tv_usec = diff % 1000000;
1240             if (select( 0, NULL, NULL, NULL, &tv ) != -1) break;
1241         }
1242     }
1243     return STATUS_SUCCESS;
1244 }
1245
1246 /******************************************************************
1247  *              NtCreateIoCompletion (NTDLL.@)
1248  *              ZwCreateIoCompletion (NTDLL.@)
1249  *
1250  * Creates I/O completion object.
1251  *
1252  * PARAMS
1253  *      CompletionPort            [O] created completion object handle will be placed there
1254  *      DesiredAccess             [I] desired access to a handle (combination of IO_COMPLETION_*)
1255  *      ObjectAttributes          [I] completion object attributes
1256  *      NumberOfConcurrentThreads [I] desired number of concurrent active worker threads
1257  *
1258  */
1259 NTSTATUS WINAPI NtCreateIoCompletion( PHANDLE CompletionPort, ACCESS_MASK DesiredAccess,
1260                                       POBJECT_ATTRIBUTES ObjectAttributes, ULONG NumberOfConcurrentThreads )
1261 {
1262     NTSTATUS status;
1263
1264     TRACE("(%p, %x, %p, %d)\n", CompletionPort, DesiredAccess,
1265           ObjectAttributes, NumberOfConcurrentThreads);
1266
1267     if (!CompletionPort)
1268         return STATUS_INVALID_PARAMETER;
1269
1270     SERVER_START_REQ( create_completion )
1271     {
1272         req->access     = DesiredAccess;
1273         req->attributes = ObjectAttributes ? ObjectAttributes->Attributes : 0;
1274         req->rootdir    = wine_server_obj_handle( ObjectAttributes ? ObjectAttributes->RootDirectory : 0 );
1275         req->concurrent = NumberOfConcurrentThreads;
1276         if (ObjectAttributes && ObjectAttributes->ObjectName)
1277             wine_server_add_data( req, ObjectAttributes->ObjectName->Buffer,
1278                                        ObjectAttributes->ObjectName->Length );
1279         if (!(status = wine_server_call( req )))
1280             *CompletionPort = wine_server_ptr_handle( reply->handle );
1281     }
1282     SERVER_END_REQ;
1283     return status;
1284 }
1285
1286 /******************************************************************
1287  *              NtSetIoCompletion (NTDLL.@)
1288  *              ZwSetIoCompletion (NTDLL.@)
1289  *
1290  * Inserts completion message into queue
1291  *
1292  * PARAMS
1293  *      CompletionPort           [I] HANDLE to completion object
1294  *      CompletionKey            [I] completion key
1295  *      CompletionValue          [I] completion value (usually pointer to OVERLAPPED)
1296  *      Status                   [I] operation status
1297  *      NumberOfBytesTransferred [I] number of bytes transferred
1298  */
1299 NTSTATUS WINAPI NtSetIoCompletion( HANDLE CompletionPort, ULONG_PTR CompletionKey,
1300                                    ULONG_PTR CompletionValue, NTSTATUS Status,
1301                                    ULONG NumberOfBytesTransferred )
1302 {
1303     NTSTATUS status;
1304
1305     TRACE("(%p, %lx, %lx, %x, %d)\n", CompletionPort, CompletionKey,
1306           CompletionValue, Status, NumberOfBytesTransferred);
1307
1308     SERVER_START_REQ( add_completion )
1309     {
1310         req->handle      = wine_server_obj_handle( CompletionPort );
1311         req->ckey        = CompletionKey;
1312         req->cvalue      = CompletionValue;
1313         req->status      = Status;
1314         req->information = NumberOfBytesTransferred;
1315         status = wine_server_call( req );
1316     }
1317     SERVER_END_REQ;
1318     return status;
1319 }
1320
1321 /******************************************************************
1322  *              NtRemoveIoCompletion (NTDLL.@)
1323  *              ZwRemoveIoCompletion (NTDLL.@)
1324  *
1325  * (Wait for and) retrieve first completion message from completion object's queue
1326  *
1327  * PARAMS
1328  *      CompletionPort  [I] HANDLE to I/O completion object
1329  *      CompletionKey   [O] completion key
1330  *      CompletionValue [O] Completion value given in NtSetIoCompletion or in async operation
1331  *      iosb            [O] IO_STATUS_BLOCK of completed asynchronous operation
1332  *      WaitTime        [I] optional wait time in NTDLL format
1333  *
1334  */
1335 NTSTATUS WINAPI NtRemoveIoCompletion( HANDLE CompletionPort, PULONG_PTR CompletionKey,
1336                                       PULONG_PTR CompletionValue, PIO_STATUS_BLOCK iosb,
1337                                       PLARGE_INTEGER WaitTime )
1338 {
1339     NTSTATUS status;
1340
1341     TRACE("(%p, %p, %p, %p, %p)\n", CompletionPort, CompletionKey,
1342           CompletionValue, iosb, WaitTime);
1343
1344     for(;;)
1345     {
1346         SERVER_START_REQ( remove_completion )
1347         {
1348             req->handle = wine_server_obj_handle( CompletionPort );
1349             if (!(status = wine_server_call( req )))
1350             {
1351                 *CompletionKey    = reply->ckey;
1352                 *CompletionValue  = reply->cvalue;
1353                 iosb->Information = reply->information;
1354                 iosb->u.Status    = reply->status;
1355             }
1356         }
1357         SERVER_END_REQ;
1358         if (status != STATUS_PENDING) break;
1359
1360         status = NtWaitForSingleObject( CompletionPort, FALSE, WaitTime );
1361         if (status != WAIT_OBJECT_0) break;
1362     }
1363     return status;
1364 }
1365
1366 /******************************************************************
1367  *              NtOpenIoCompletion (NTDLL.@)
1368  *              ZwOpenIoCompletion (NTDLL.@)
1369  *
1370  * Opens I/O completion object
1371  *
1372  * PARAMS
1373  *      CompletionPort     [O] completion object handle will be placed there
1374  *      DesiredAccess      [I] desired access to a handle (combination of IO_COMPLETION_*)
1375  *      ObjectAttributes   [I] completion object name
1376  *
1377  */
1378 NTSTATUS WINAPI NtOpenIoCompletion( PHANDLE CompletionPort, ACCESS_MASK DesiredAccess,
1379                                     POBJECT_ATTRIBUTES ObjectAttributes )
1380 {
1381     NTSTATUS status;
1382
1383     TRACE("(%p, 0x%x, %p)\n", CompletionPort, DesiredAccess, ObjectAttributes);
1384
1385     if (!CompletionPort || !ObjectAttributes || !ObjectAttributes->ObjectName)
1386         return STATUS_INVALID_PARAMETER;
1387
1388     SERVER_START_REQ( open_completion )
1389     {
1390         req->access     = DesiredAccess;
1391         req->rootdir    = wine_server_obj_handle( ObjectAttributes->RootDirectory );
1392         wine_server_add_data( req, ObjectAttributes->ObjectName->Buffer,
1393                                    ObjectAttributes->ObjectName->Length );
1394         if (!(status = wine_server_call( req )))
1395             *CompletionPort = wine_server_ptr_handle( reply->handle );
1396     }
1397     SERVER_END_REQ;
1398     return status;
1399 }
1400
1401 /******************************************************************
1402  *              NtQueryIoCompletion (NTDLL.@)
1403  *              ZwQueryIoCompletion (NTDLL.@)
1404  *
1405  * Requests information about given I/O completion object
1406  *
1407  * PARAMS
1408  *      CompletionPort        [I] HANDLE to completion port to request
1409  *      InformationClass      [I] information class
1410  *      CompletionInformation [O] user-provided buffer for data
1411  *      BufferLength          [I] buffer length
1412  *      RequiredLength        [O] required buffer length
1413  *
1414  */
1415 NTSTATUS WINAPI NtQueryIoCompletion( HANDLE CompletionPort, IO_COMPLETION_INFORMATION_CLASS InformationClass,
1416                                      PVOID CompletionInformation, ULONG BufferLength, PULONG RequiredLength )
1417 {
1418     NTSTATUS status;
1419
1420     TRACE("(%p, %d, %p, 0x%x, %p)\n", CompletionPort, InformationClass, CompletionInformation,
1421           BufferLength, RequiredLength);
1422
1423     if (!CompletionInformation) return STATUS_INVALID_PARAMETER;
1424     switch( InformationClass )
1425     {
1426         case IoCompletionBasicInformation:
1427             {
1428                 ULONG *info = CompletionInformation;
1429
1430                 if (RequiredLength) *RequiredLength = sizeof(*info);
1431                 if (BufferLength != sizeof(*info))
1432                     status = STATUS_INFO_LENGTH_MISMATCH;
1433                 else
1434                 {
1435                     SERVER_START_REQ( query_completion )
1436                     {
1437                         req->handle = wine_server_obj_handle( CompletionPort );
1438                         if (!(status = wine_server_call( req )))
1439                             *info = reply->depth;
1440                     }
1441                     SERVER_END_REQ;
1442                 }
1443             }
1444             break;
1445         default:
1446             status = STATUS_INVALID_PARAMETER;
1447             break;
1448     }
1449     return status;
1450 }
1451
1452 NTSTATUS NTDLL_AddCompletion( HANDLE hFile, ULONG_PTR CompletionValue,
1453                               NTSTATUS CompletionStatus, ULONG Information )
1454 {
1455     NTSTATUS status;
1456
1457     SERVER_START_REQ( add_fd_completion )
1458     {
1459         req->handle      = wine_server_obj_handle( hFile );
1460         req->cvalue      = CompletionValue;
1461         req->status      = CompletionStatus;
1462         req->information = Information;
1463         status = wine_server_call( req );
1464     }
1465     SERVER_END_REQ;
1466     return status;
1467 }