ReactOS  0.4.15-dev-2991-g632fa1c
work.c
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1 /*
2  * COPYRIGHT: See COPYING in the top level directory
3  * PROJECT: ReactOS Kernel
4  * FILE: ntoskrnl/ex/work.c
5  * PURPOSE: Manage system work queues and worker threads
6  * PROGRAMMER: Alex Ionescu (alex@relsoft.net)
7  */
8 
9 /* INCLUDES ******************************************************************/
10 
11 #include <ntoskrnl.h>
12 #define NDEBUG
13 #include <debug.h>
14 
15 /* DATA **********************************************************************/
16 
17 /* Number of worker threads for each Queue */
18 #define EX_HYPERCRITICAL_WORK_THREADS 1
19 #define EX_DELAYED_WORK_THREADS 3
20 #define EX_CRITICAL_WORK_THREADS 5
21 
22 /* Magic flag for dynamic worker threads */
23 #define EX_DYNAMIC_WORK_THREAD 0x80000000
24 
25 /* Worker thread priority increments (added to base priority) */
26 #define EX_HYPERCRITICAL_QUEUE_PRIORITY_INCREMENT 7
27 #define EX_CRITICAL_QUEUE_PRIORITY_INCREMENT 5
28 #define EX_DELAYED_QUEUE_PRIORITY_INCREMENT 4
29 
30 /* The actual worker queue array */
32 
33 /* Accounting of the total threads and registry hacked threads */
38 
39 /* Future support for stack swapping worker threads */
43 
44 /* The worker balance set manager events */
47 
48 /* Thread pointers for future worker thread shutdown support */
51 
52 /* PRIVATE FUNCTIONS *********************************************************/
53 
54 /*++
55  * @name ExpWorkerThreadEntryPoint
56  *
57  * The ExpWorkerThreadEntryPoint routine is the entrypoint for any new
58  * worker thread created by teh system.
59  *
60  * @param Context
61  * Contains the work queue type masked with a flag specifing whether the
62  * thread is dynamic or not.
63  *
64  * @return None.
65  *
66  * @remarks A dynamic thread can timeout after 10 minutes of waiting on a queue
67  * while a static thread will never timeout.
68  *
69  * Worker threads must return at IRQL == PASSIVE_LEVEL, must not have
70  * active impersonation info, and must not have disabled APCs.
71  *
72  * NB: We will re-enable APCs for broken threads but all other cases
73  * will generate a bugcheck.
74  *
75  *--*/
76 VOID
77 NTAPI
79 {
81  PLIST_ENTRY QueueEntry;
82  WORK_QUEUE_TYPE WorkQueueType;
85  PLARGE_INTEGER TimeoutPointer = NULL;
87  KPROCESSOR_MODE WaitMode;
88  EX_QUEUE_WORKER_INFO OldValue, NewValue;
89 
90  /* Check if this is a dyamic thread */
92  {
93  /* It is, which means we will eventually time out after 10 minutes */
94  Timeout.QuadPart = Int32x32To64(10, -10000000 * 60);
95  TimeoutPointer = &Timeout;
96  }
97 
98  /* Get Queue Type and Worker Queue */
99  WorkQueueType = (WORK_QUEUE_TYPE)((ULONG_PTR)Context &
101  WorkQueue = &ExWorkerQueue[WorkQueueType];
102 
103  /* Select the wait mode */
104  WaitMode = (UCHAR)WorkQueue->Info.WaitMode;
105 
106  /* Nobody should have initialized this yet, do it now */
108  if (WaitMode == UserMode) Thread->ExWorkerCanWaitUser = TRUE;
109 
110  /* If we shouldn't swap, disable that feature */
112 
113  /* Set the worker flags */
114  do
115  {
116  /* Check if the queue is being disabled */
117  if (WorkQueue->Info.QueueDisabled)
118  {
119  /* Re-enable stack swapping and kill us */
122  }
123 
124  /* Increase the worker count */
125  OldValue = WorkQueue->Info;
126  NewValue = OldValue;
127  NewValue.WorkerCount++;
128  }
130  *(PLONG)&NewValue,
131  *(PLONG)&OldValue) != *(PLONG)&OldValue);
132 
133  /* Success, you are now officially a worker thread! */
135 
136  /* Loop forever */
137 ProcessLoop:
138  for (;;)
139  {
140  /* Wait for something to happen on the queue */
141  QueueEntry = KeRemoveQueue(&WorkQueue->WorkerQueue,
142  WaitMode,
143  TimeoutPointer);
144 
145  /* Check if we timed out and quit this loop in that case */
146  if ((NTSTATUS)(ULONG_PTR)QueueEntry == STATUS_TIMEOUT) break;
147 
148  /* Increment Processed Work Items */
149  InterlockedIncrement((PLONG)&WorkQueue->WorkItemsProcessed);
150 
151  /* Get the Work Item */
153 
154  /* Make sure nobody is trying to play smart with us */
155  ASSERT((ULONG_PTR)WorkItem->WorkerRoutine > MmUserProbeAddress);
156 
157  /* Call the Worker Routine */
158  WorkItem->WorkerRoutine(WorkItem->Parameter);
159 
160  /* Make sure APCs are not disabled */
161  if (Thread->Tcb.CombinedApcDisable != 0)
162  {
163  /* We're nice and do it behind your back */
164  DPRINT1("Warning: Broken Worker Thread: %p %p %p came back "
165  "with APCs disabled!\n",
166  WorkItem->WorkerRoutine,
167  WorkItem->Parameter,
168  WorkItem);
171  }
172 
173  /* Make sure it returned at right IRQL */
175  {
176  /* It didn't, bugcheck! */
177  KeBugCheckEx(WORKER_THREAD_RETURNED_AT_BAD_IRQL,
178  (ULONG_PTR)WorkItem->WorkerRoutine,
180  (ULONG_PTR)WorkItem->Parameter,
182  }
183 
184  /* Make sure it returned with Impersionation Disabled */
186  {
187  /* It didn't, bugcheck! */
188  KeBugCheckEx(IMPERSONATING_WORKER_THREAD,
189  (ULONG_PTR)WorkItem->WorkerRoutine,
190  (ULONG_PTR)WorkItem->Parameter,
192  0);
193  }
194  }
195 
196  /* This is a dynamic thread. Terminate it unless IRPs are pending */
197  if (!IsListEmpty(&Thread->IrpList)) goto ProcessLoop;
198 
199  /* Don't terminate it if the queue is disabled either */
200  if (WorkQueue->Info.QueueDisabled) goto ProcessLoop;
201 
202  /* Set the worker flags */
203  do
204  {
205  /* Decrease the worker count */
206  OldValue = WorkQueue->Info;
207  NewValue = OldValue;
208  NewValue.WorkerCount--;
209  }
211  *(PLONG)&NewValue,
212  *(PLONG)&OldValue) != *(PLONG)&OldValue);
213 
214  /* Decrement dynamic thread count */
215  InterlockedDecrement(&WorkQueue->DynamicThreadCount);
216 
217  /* We're not a worker thread anymore */
219 
220  /* Re-enable the stack swap */
222  return;
223 }
224 
225 /*++
226  * @name ExpCreateWorkerThread
227  *
228  * The ExpCreateWorkerThread routine creates a new worker thread for the
229  * specified queue.
230  *
231  * @param QueueType
232  * Type of the queue to use for this thread. Valid values are:
233  * - DelayedWorkQueue
234  * - CriticalWorkQueue
235  * - HyperCriticalWorkQueue
236  *
237  * @param Dynamic
238  * Specifies whether or not this thread is a dynamic thread.
239  *
240  * @return None.
241  *
242  * @remarks HyperCritical work threads run at priority 7; Critical work threads
243  * run at priority 5, and delayed work threads run at priority 4.
244  *
245  * This, worker threads cannot pre-empty a normal user-mode thread.
246  *
247  *--*/
248 VOID
249 NTAPI
251  IN BOOLEAN Dynamic)
252 {
254  HANDLE hThread;
255  ULONG Context;
258 
259  /* Check if this is going to be a dynamic thread */
260  Context = WorkQueueType;
261 
262  /* Add the dynamic mask */
263  if (Dynamic) Context |= EX_DYNAMIC_WORK_THREAD;
264 
265  /* Create the System Thread */
268  NULL,
269  NULL,
270  NULL,
273  if (!NT_SUCCESS(Status))
274  {
275  /* Well... */
276  DPRINT1("Failed to create worker thread: 0x%08x\n", Status);
277  return;
278  }
279 
280  /* If the thread is dynamic */
281  if (Dynamic)
282  {
283  /* Increase the count */
284  InterlockedIncrement(&ExWorkerQueue[WorkQueueType].DynamicThreadCount);
285  }
286 
287  /* Set the priority */
288  if (WorkQueueType == DelayedWorkQueue)
289  {
290  /* Priority == 4 */
292  }
293  else if (WorkQueueType == CriticalWorkQueue)
294  {
295  /* Priority == 5 */
297  }
298  else
299  {
300  /* Priority == 7 */
302  }
303 
304  /* Get the Thread */
307  PsThreadType,
308  KernelMode,
309  (PVOID*)&Thread,
310  NULL);
311 
312  /* Set the Priority */
314 
315  /* Dereference and close handle */
318 }
319 
320 /*++
321  * @name ExpDetectWorkerThreadDeadlock
322  *
323  * The ExpDetectWorkerThreadDeadlock routine checks every queue and creates
324  * a dynamic thread if the queue seems to be deadlocked.
325  *
326  * @param None
327  *
328  * @return None.
329  *
330  * @remarks The algorithm for deciding if a new thread must be created is based
331  * on whether the queue has processed no new items in the last second,
332  * and new items are still enqueued.
333  *
334  *--*/
335 VOID
336 NTAPI
338 {
339  ULONG i;
341 
342  /* Loop the 3 queues */
343  for (i = 0; i < MaximumWorkQueue; i++)
344  {
345  /* Get the queue */
346  Queue = &ExWorkerQueue[i];
347  ASSERT(Queue->DynamicThreadCount <= 16);
348 
349  /* Check if stuff is on the queue that still is unprocessed */
350  if ((Queue->QueueDepthLastPass) &&
351  (Queue->WorkItemsProcessed == Queue->WorkItemsProcessedLastPass) &&
352  (Queue->DynamicThreadCount < 16))
353  {
354  /* Stuff is still on the queue and nobody did anything about it */
355  DPRINT1("EX: Work Queue Deadlock detected: %lu\n", i);
357  DPRINT1("Dynamic threads queued %d\n", Queue->DynamicThreadCount);
358  }
359 
360  /* Update our data */
361  Queue->WorkItemsProcessedLastPass = Queue->WorkItemsProcessed;
362  Queue->QueueDepthLastPass = KeReadStateQueue(&Queue->WorkerQueue);
363  }
364 }
365 
366 /*++
367  * @name ExpCheckDynamicThreadCount
368  *
369  * The ExpCheckDynamicThreadCount routine checks every queue and creates
370  * a dynamic thread if the queue requires one.
371  *
372  * @param None
373  *
374  * @return None.
375  *
376  * @remarks The algorithm for deciding if a new thread must be created is
377  * documented in the ExQueueWorkItem routine.
378  *
379  *--*/
380 VOID
381 NTAPI
383 {
384  ULONG i;
386 
387  /* Loop the 3 queues */
388  for (i = 0; i < MaximumWorkQueue; i++)
389  {
390  /* Get the queue */
391  Queue = &ExWorkerQueue[i];
392 
393  /* Check if still need a new thread. See ExQueueWorkItem */
394  if ((Queue->Info.MakeThreadsAsNecessary) &&
395  (!IsListEmpty(&Queue->WorkerQueue.EntryListHead)) &&
396  (Queue->WorkerQueue.CurrentCount <
397  Queue->WorkerQueue.MaximumCount) &&
398  (Queue->DynamicThreadCount < 16))
399  {
400  /* Create a new thread */
401  DPRINT1("EX: Creating new dynamic thread as requested\n");
403  }
404  }
405 }
406 
407 /*++
408  * @name ExpWorkerThreadBalanceManager
409  *
410  * The ExpWorkerThreadBalanceManager routine is the entrypoint for the
411  * worker thread balance set manager.
412  *
413  * @param Context
414  * Unused.
415  *
416  * @return None.
417  *
418  * @remarks The worker thread balance set manager listens every second, but can
419  * also be woken up by an event when a new thread is needed, or by the
420  * special shutdown event. This thread runs at priority 7.
421  *
422  * This routine must run at IRQL == PASSIVE_LEVEL.
423  *
424  *--*/
425 VOID
426 NTAPI
428 {
429  KTIMER Timer;
432  PVOID WaitEvents[3];
433  PAGED_CODE();
435 
436  /* Raise our priority above all other worker threads */
439 
440  /* Setup the timer */
442  Timeout.QuadPart = Int32x32To64(-1, 10000000);
443 
444  /* We'll wait on the periodic timer and also the emergency event */
445  WaitEvents[0] = &Timer;
446  WaitEvents[1] = &ExpThreadSetManagerEvent;
447  WaitEvents[2] = &ExpThreadSetManagerShutdownEvent;
448 
449  /* Start wait loop */
450  for (;;)
451  {
452  /* Wait for the timer */
455  WaitEvents,
456  WaitAny,
457  Executive,
458  KernelMode,
459  FALSE,
460  NULL,
461  NULL);
462  if (Status == 0)
463  {
464  /* Our timer expired. Check for deadlocks */
466  }
467  else if (Status == 1)
468  {
469  /* Someone notified us, verify if we should create a new thread */
471  }
472  else if (Status == 2)
473  {
474  /* We are shutting down. Cancel the timer */
475  DPRINT1("System shutdown\n");
477 
478  /* Make sure we have a final thread */
480 
481  /* Wait for it */
483  Executive,
484  KernelMode,
485  FALSE,
486  NULL);
487 
488  /* Dereference it and kill us */
491  }
492 
493  /*
494  * If WinDBG wants to attach or kill a user-mode process, and/or
495  * page-in an address region, queue a debugger worker thread.
496  */
498  {
502  }
503  }
504 }
505 
506 /*++
507  * @name ExpInitializeWorkerThreads
508  *
509  * The ExpInitializeWorkerThreads routine initializes worker thread and
510  * work queue support.
511  *
512  * @param None.
513  *
514  * @return None.
515  *
516  * @remarks This routine is only called once during system initialization.
517  *
518  *--*/
519 CODE_SEG("INIT")
520 VOID
521 NTAPI
523 {
524  ULONG WorkQueueType;
525  ULONG CriticalThreads, DelayedThreads;
526  HANDLE ThreadHandle;
528  ULONG i;
530 
531  /* Setup the stack swap support */
535 
536  /* Set the number of critical and delayed threads. We shouldn't hardcode */
537  DelayedThreads = EX_DELAYED_WORK_THREADS;
538  CriticalThreads = EX_CRITICAL_WORK_THREADS;
539 
540  /* Protect against greedy registry modifications */
545 
546  /* Calculate final count */
547  DelayedThreads += ExpAdditionalDelayedWorkerThreads;
548  CriticalThreads += ExpAdditionalCriticalWorkerThreads;
549 
550  /* Initialize the Array */
551  for (WorkQueueType = 0; WorkQueueType < MaximumWorkQueue; WorkQueueType++)
552  {
553  /* Clear the structure and initialize the queue */
554  RtlZeroMemory(&ExWorkerQueue[WorkQueueType], sizeof(EX_WORK_QUEUE));
555  KeInitializeQueue(&ExWorkerQueue[WorkQueueType].WorkerQueue, 0);
556  }
557 
558  /* Dynamic threads are only used for the critical queue */
560 
561  /* Initialize the balance set manager events */
565  FALSE);
566 
567  /* Create the built-in worker threads for the critical queue */
568  for (i = 0; i < CriticalThreads; i++)
569  {
570  /* Create the thread */
573  }
574 
575  /* Create the built-in worker threads for the delayed queue */
576  for (i = 0; i < DelayedThreads; i++)
577  {
578  /* Create the thread */
581  }
582 
583  /* Create the built-in worker thread for the hypercritical queue */
585 
586  /* Create the balance set manager thread */
587  Status = PsCreateSystemThread(&ThreadHandle,
589  NULL,
590  0,
591  NULL,
593  NULL);
594  if (!NT_SUCCESS(Status))
595  {
596  KeBugCheckEx(PHASE1_INITIALIZATION_FAILED, Status, 0, 0, 0);
597  }
598 
599  /* Get a pointer to it for the shutdown process */
600  ObReferenceObjectByHandle(ThreadHandle,
602  NULL,
603  KernelMode,
604  (PVOID*)&Thread,
605  NULL);
607 
608  /* Close the handle and return */
609  ObCloseHandle(ThreadHandle, KernelMode);
610 }
611 
612 VOID
613 NTAPI
615  OUT PKNORMAL_ROUTINE *NormalRoutine,
616  IN OUT PVOID *NormalContext,
619 {
620  PBOOLEAN AllowSwap;
622 
623  /* Make sure it's an active worker */
624  if (PsGetCurrentThread()->ActiveExWorker)
625  {
626  /* Read the setting from the context flag */
627  AllowSwap = (PBOOLEAN)NormalContext;
628  KeSetKernelStackSwapEnable(*AllowSwap);
629  }
630 
631  /* Let caller know that we're done */
632  KeSetEvent(Event, 0, FALSE);
633 }
634 
635 VOID
636 NTAPI
638 {
639  KEVENT Event;
640  PETHREAD CurrentThread = PsGetCurrentThread(), Thread;
642  KAPC Apc;
643  PAGED_CODE();
644 
645  /* Initialize an event so we know when we're done */
647 
648  /* Lock this routine */
650 
651  /* New threads cannot swap anymore */
652  ExpWorkersCanSwap = AllowSwap;
653 
654  /* Loop all threads in the system process */
656  while (Thread)
657  {
658  /* Skip threads with explicit permission to do this */
659  if (Thread->ExWorkerCanWaitUser) goto Next;
660 
661  /* Check if we reached ourselves */
662  if (Thread == CurrentThread)
663  {
664  /* Do it inline */
665  KeSetKernelStackSwapEnable(AllowSwap);
666  }
667  else
668  {
669  /* Queue an APC */
670  KeInitializeApc(&Apc,
671  &Thread->Tcb,
674  NULL,
675  NULL,
676  KernelMode,
677  &AllowSwap);
678  if (KeInsertQueueApc(&Apc, &Event, NULL, 3))
679  {
680  /* Wait for the APC to run */
683  }
684  }
685 
686  /* Next thread */
687 Next:
689  }
690 
691  /* Release the lock */
693 }
694 
695 /* PUBLIC FUNCTIONS **********************************************************/
696 
697 /*++
698  * @name ExQueueWorkItem
699  * @implemented NT4
700  *
701  * The ExQueueWorkItem routine acquires rundown protection for
702  * the specified descriptor.
703  *
704  * @param WorkItem
705  * Pointer to an initialized Work Queue Item structure. This structure
706  * must be located in nonpaged pool memory.
707  *
708  * @param QueueType
709  * Type of the queue to use for this item. Can be one of the following:
710  * - DelayedWorkQueue
711  * - CriticalWorkQueue
712  * - HyperCriticalWorkQueue
713  *
714  * @return None.
715  *
716  * @remarks This routine is obsolete. Use IoQueueWorkItem instead.
717  *
718  * Callers of this routine must be running at IRQL <= DISPATCH_LEVEL.
719  *
720  *--*/
721 VOID
722 NTAPI
725 {
728  ASSERT(WorkItem->List.Flink == NULL);
729 
730  /* Don't try to trick us */
731  if ((ULONG_PTR)WorkItem->WorkerRoutine < MmUserProbeAddress)
732  {
733  /* Bugcheck the system */
734  KeBugCheckEx(WORKER_INVALID,
735  1,
737  (ULONG_PTR)WorkItem->WorkerRoutine,
738  0);
739  }
740 
741  /* Insert the Queue */
742  KeInsertQueue(&WorkQueue->WorkerQueue, &WorkItem->List);
743  ASSERT(!WorkQueue->Info.QueueDisabled);
744 
745  /*
746  * Check if we need a new thread. Our decision is as follows:
747  * - This queue type must support Dynamic Threads (duh!)
748  * - It actually has to have unprocessed items
749  * - We have CPUs which could be handling another thread
750  * - We haven't abused our usage of dynamic threads.
751  */
752  if ((WorkQueue->Info.MakeThreadsAsNecessary) &&
753  (!IsListEmpty(&WorkQueue->WorkerQueue.EntryListHead)) &&
754  (WorkQueue->WorkerQueue.CurrentCount <
755  WorkQueue->WorkerQueue.MaximumCount) &&
756  (WorkQueue->DynamicThreadCount < 16))
757  {
758  /* Let the balance manager know about it */
759  DPRINT1("Requesting a new thread. CurrentCount: %lu. MaxCount: %lu\n",
760  WorkQueue->WorkerQueue.CurrentCount,
761  WorkQueue->WorkerQueue.MaximumCount);
763  }
764 }
765 
766 /* EOF */
ULONG MmUserProbeAddress
Definition: init.c:50
#define KeGetCurrentIrql()
Definition: env_spec_w32.h:706
VOID NTAPI KeInitializeApc(IN PKAPC Apc, IN PKTHREAD Thread, IN KAPC_ENVIRONMENT TargetEnvironment, IN PKKERNEL_ROUTINE KernelRoutine, IN PKRUNDOWN_ROUTINE RundownRoutine OPTIONAL, IN PKNORMAL_ROUTINE NormalRoutine, IN KPROCESSOR_MODE Mode, IN PVOID Context)
Definition: apc.c:651
#define EX_DYNAMIC_WORK_THREAD
Definition: work.c:23
#define IN
Definition: typedefs.h:39
#define THREAD_ALL_ACCESS
Definition: nt_native.h:1339
struct _KEVENT * PKEVENT
VOID NTAPI ExQueueWorkItem(IN PWORK_QUEUE_ITEM WorkItem, IN WORK_QUEUE_TYPE QueueType)
Definition: work.c:723
BOOLEAN NTAPI KeSetTimer(IN OUT PKTIMER Timer, IN LARGE_INTEGER DueTime, IN PKDPC Dpc OPTIONAL)
Definition: timerobj.c:281
VOID NTAPI ExSwapinWorkerThreads(IN BOOLEAN AllowSwap)
Definition: work.c:637
VOID NTAPI ExpCreateWorkerThread(WORK_QUEUE_TYPE WorkQueueType, IN BOOLEAN Dynamic)
Definition: work.c:250
#define PsGetCurrentThread()
Definition: env_spec_w32.h:81
ULONG CombinedApcDisable
Definition: ketypes.h:1815
#define TRUE
Definition: types.h:120
#define UNREFERENCED_PARAMETER(P)
Definition: ntbasedef.h:317
KEVENT ExpThreadSetManagerShutdownEvent
Definition: work.c:46
_Must_inspect_result_ _In_ WDFDEVICE _In_ PIRP _In_ WDFQUEUE Queue
Definition: wdfdevice.h:2221
#define THREAD_SET_INFORMATION
Definition: nt_native.h:1337
LONG NTSTATUS
Definition: precomp.h:26
KTHREAD Tcb
Definition: pstypes.h:1103
#define InterlockedCompareExchange
Definition: interlocked.h:104
LONG NTAPI KeSetBasePriorityThread(IN PKTHREAD Thread, IN LONG Increment)
Definition: thrdobj.c:1184
PETHREAD ExpWorkerThreadBalanceManagerPtr
Definition: work.c:49
VOID NTAPI ExpWorkerThreadEntryPoint(IN PVOID Context)
Definition: work.c:78
LONG NTAPI KeSetEvent(IN PKEVENT Event, IN KPRIORITY Increment, IN BOOLEAN Wait)
Definition: eventobj.c:159
NTSTATUS NTAPI KeWaitForSingleObject(IN PVOID Object, IN KWAIT_REASON WaitReason, IN KPROCESSOR_MODE WaitMode, IN BOOLEAN Alertable, IN PLARGE_INTEGER Timeout OPTIONAL)
Definition: wait.c:416
_Must_inspect_result_ FORCEINLINE BOOLEAN IsListEmpty(_In_ const LIST_ENTRY *ListHead)
Definition: rtlfuncs.h:57
VOID FASTCALL ExReleaseFastMutex(IN PFAST_MUTEX FastMutex)
Definition: fmutex.c:31
LONG KPRIORITY
Definition: compat.h:662
uint32_t ULONG_PTR
Definition: typedefs.h:65
#define STATUS_TIMEOUT
Definition: ntstatus.h:81
NTSTATUS NTAPI ObReferenceObjectByHandle(IN HANDLE Handle, IN ACCESS_MASK DesiredAccess, IN POBJECT_TYPE ObjectType, IN KPROCESSOR_MODE AccessMode, OUT PVOID *Object, OUT POBJECT_HANDLE_INFORMATION HandleInformation OPTIONAL)
Definition: obref.c:494
NTSTATUS(* NTAPI)(IN PFILE_FULL_EA_INFORMATION EaBuffer, IN ULONG EaLength, OUT PULONG ErrorOffset)
Definition: IoEaTest.cpp:117
#define FALSE
Definition: types.h:117
PEPROCESS PsInitialSystemProcess
Definition: psmgr.c:50
VOID NTAPI ExpDetectWorkerThreadDeadlock(VOID)
Definition: work.c:337
LIST_ENTRY WorkQueue
Definition: workqueue.c:20
#define EX_CRITICAL_WORK_THREADS
Definition: work.c:20
ULONG ActiveExWorker
Definition: pstypes.h:1200
_In_ PVOID _In_ ULONG Event
Definition: iotypes.h:467
unsigned char BOOLEAN
LONG NTAPI KeReadStateQueue(IN PKQUEUE Queue)
Definition: queue.c:226
VOID NTAPI KeInitializeTimer(OUT PKTIMER Timer)
Definition: timerobj.c:233
VOID NTAPI ExpInitializeWorkerThreads(VOID)
Definition: work.c:522
PFLT_MESSAGE_WAITER_QUEUE CONTAINING_RECORD(Csq, DEVICE_EXTENSION, IrpQueue)) -> WaiterQ.mLock) _IRQL_raises_(DISPATCH_LEVEL) VOID NTAPI FltpAcquireMessageWaiterLock(_In_ PIO_CSQ Csq, _Out_ PKIRQL Irql)
Definition: Messaging.c:560
#define UlongToPtr(u)
Definition: config.h:106
PETHREAD ExpLastWorkerThread
Definition: work.c:50
Status
Definition: gdiplustypes.h:24
FAST_MUTEX
Definition: extypes.h:17
_In_opt_ PVOID _In_opt_ PVOID SystemArgument1
Definition: ketypes.h:675
WORK_QUEUE_ITEM ExpDebuggerWorkItem
Definition: dbgctrl.c:20
BOOLEAN NTAPI KeCancelTimer(IN OUT PKTIMER Timer)
Definition: timerobj.c:206
#define ExInitializeWorkItem(Item, Routine, Context)
Definition: exfuncs.h:265
VOID NTAPI ExpSetSwappingKernelApc(IN PKAPC Apc, OUT PKNORMAL_ROUTINE *NormalRoutine, IN OUT PVOID *NormalContext, IN OUT PVOID *SystemArgument1, IN OUT PVOID *SystemArgument2)
Definition: work.c:614
#define ASSERT(a)
Definition: mode.c:44
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
LIST_ENTRY ExpWorkerListHead
Definition: work.c:41
FORCEINLINE VOID ExInitializeFastMutex(_Out_ PFAST_MUTEX FastMutex)
Definition: exfuncs.h:274
#define ObDereferenceObject
Definition: obfuncs.h:203
_In_opt_ PFILE_OBJECT _In_opt_ PETHREAD Thread
Definition: fltkernel.h:2652
CCHAR KPROCESSOR_MODE
Definition: ketypes.h:7
NTSTATUS NTAPI KeWaitForMultipleObjects(IN ULONG Count, IN PVOID Object[], IN WAIT_TYPE WaitType, IN KWAIT_REASON WaitReason, IN KPROCESSOR_MODE WaitMode, IN BOOLEAN Alertable, IN PLARGE_INTEGER Timeout OPTIONAL, OUT PKWAIT_BLOCK WaitBlockArray OPTIONAL)
Definition: wait.c:586
ULONG ActiveImpersonationInfo
Definition: pstypes.h:1181
PETHREAD NTAPI PsGetNextProcessThread(IN PEPROCESS Process, IN PETHREAD Thread OPTIONAL)
Definition: process.c:75
enum _WORK_QUEUE_TYPE WORK_QUEUE_TYPE
_In_ WDFINTERRUPT _In_ WDF_INTERRUPT_POLICY _In_ WDF_INTERRUPT_PRIORITY Priority
Definition: wdfinterrupt.h:651
unsigned char UCHAR
Definition: xmlstorage.h:181
char * PBOOLEAN
Definition: retypes.h:11
NTSTATUS NTAPI ObCloseHandle(IN HANDLE Handle, IN KPROCESSOR_MODE AccessMode)
Definition: obhandle.c:3375
POBJECT_TYPE PsThreadType
Definition: thread.c:20
#define InterlockedDecrement
Definition: armddk.h:52
PLIST_ENTRY NTAPI KeRemoveQueue(IN PKQUEUE Queue, IN KPROCESSOR_MODE WaitMode, IN PLARGE_INTEGER Timeout OPTIONAL)
Definition: queue.c:238
_Must_inspect_result_ _In_ WDFCMRESLIST List
Definition: wdfresource.h:550
#define EX_HYPERCRITICAL_QUEUE_PRIORITY_INCREMENT
Definition: work.c:26
Definition: ketypes.h:535
Definition: typedefs.h:119
#define PASSIVE_LEVEL
Definition: env_spec_w32.h:693
VOID NTAPI ExpCheckDynamicThreadCount(VOID)
Definition: work.c:382
#define EX_DELAYED_QUEUE_PRIORITY_INCREMENT
Definition: work.c:28
_Must_inspect_result_ _In_ PWDF_TIMER_CONFIG _In_ PWDF_OBJECT_ATTRIBUTES _Out_ WDFTIMER * Timer
Definition: wdftimer.h:153
KEVENT ExpThreadSetManagerEvent
Definition: work.c:45
_In_opt_ PVOID _In_opt_ PVOID _In_opt_ PVOID SystemArgument2
Definition: ketypes.h:675
FAST_MUTEX ExpWorkerSwapinMutex
Definition: work.c:42
VOID NTAPI ExpDebuggerWorker(IN PVOID Context)
Definition: dbgctrl.c:52
#define EX_CRITICAL_QUEUE_PRIORITY_INCREMENT
Definition: work.c:27
static ULONG Timeout
Definition: ping.c:61
#define KeInitializeEvent(pEvt, foo, foo2)
Definition: env_spec_w32.h:477
#define InterlockedIncrement
Definition: armddk.h:53
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
VOID FASTCALL ExAcquireFastMutex(IN PFAST_MUTEX FastMutex)
Definition: fmutex.c:23
EX_WORK_QUEUE ExWorkerQueue[MaximumWorkQueue]
Definition: work.c:31
#define EX_DELAYED_WORK_THREADS
Definition: work.c:19
#define InitializeListHead(ListHead)
Definition: env_spec_w32.h:944
LONG NTAPI KeInsertQueue(IN PKQUEUE Queue, IN PLIST_ENTRY Entry)
Definition: queue.c:198
NTSTATUS NTAPI PsTerminateSystemThread(IN NTSTATUS ExitStatus)
Definition: kill.c:1144
NTSTATUS NTAPI PsCreateSystemThread(OUT PHANDLE ThreadHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes, IN HANDLE ProcessHandle, IN PCLIENT_ID ClientId, IN PKSTART_ROUTINE StartRoutine, IN PVOID StartContext)
Definition: thread.c:602
ULONG ExDelayedWorkerThreads
Definition: work.c:35
#define min(a, b)
Definition: monoChain.cc:55
#define NULL
Definition: types.h:112
HANDLE hThread
Definition: wizard.c:28
BOOLEAN NTAPI KeInsertQueueApc(IN PKAPC Apc, IN PVOID SystemArgument1, IN PVOID SystemArgument2, IN KPRIORITY PriorityBoost)
Definition: apc.c:735
ULONG MakeThreadsAsNecessary
Definition: extypes.h:400
#define DPRINT1
Definition: precomp.h:8
VOID NTAPI KeInitializeQueue(IN PKQUEUE Queue, IN ULONG Count OPTIONAL)
Definition: queue.c:148
ULONG ExpAdditionalCriticalWorkerThreads
Definition: work.c:36
_Must_inspect_result_ _In_ PLARGE_INTEGER _In_ PLARGE_INTEGER _In_ ULONG _In_ PFILE_OBJECT _In_ PVOID Process
Definition: fsrtlfuncs.h:219
struct tagContext Context
Definition: acpixf.h:1034
WINKD_WORKER_STATE ExpDebuggerWork
Definition: dbgctrl.c:25
#define OUT
Definition: typedefs.h:40
unsigned int ULONG
Definition: retypes.h:1
ULONG ExCriticalWorkerThreads
Definition: work.c:34
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
BOOLEAN ExpWorkersCanSwap
Definition: work.c:40
ULONG ExWorkerCanWaitUser
Definition: pstypes.h:1201
VOID(NTAPI * PKNORMAL_ROUTINE)(IN PVOID NormalContext OPTIONAL, IN PVOID SystemArgument1 OPTIONAL, IN PVOID SystemArgument2 OPTIONAL)
Definition: ketypes.h:674
_Must_inspect_result_ _In_ PWDF_WORKITEM_CONFIG _In_ PWDF_OBJECT_ATTRIBUTES _Out_ WDFWORKITEM * WorkItem
Definition: wdfworkitem.h:110
#define KeGetCurrentThread
Definition: hal.h:55
VOID NTAPI KeClearEvent(IN PKEVENT Event)
Definition: eventobj.c:22
signed int * PLONG
Definition: retypes.h:5
static CODE_SEG("PAGE")
Definition: isapnp.c:1482
LIST_ENTRY IrpList
Definition: pstypes.h:1144
EX_QUEUE_WORKER_INFO Info
Definition: extypes.h:412
ULONG ExpAdditionalDelayedWorkerThreads
Definition: work.c:37
#define Int32x32To64(a, b)
VOID NTAPI KeBugCheckEx(_In_ ULONG BugCheckCode, _In_ ULONG_PTR BugCheckParameter1, _In_ ULONG_PTR BugCheckParameter2, _In_ ULONG_PTR BugCheckParameter3, _In_ ULONG_PTR BugCheckParameter4)
Definition: rtlcompat.c:108
VOID NTAPI ExpWorkerThreadBalanceManager(IN PVOID Context)
Definition: work.c:427
_Must_inspect_result_ _In_ PFLT_CALLBACK_DATA _In_ PFLT_DEFERRED_IO_WORKITEM_ROUTINE _In_ WORK_QUEUE_TYPE QueueType
Definition: fltkernel.h:1976
#define STATUS_SYSTEM_SHUTDOWN
Definition: ntstatus.h:855
BOOLEAN NTAPI KeSetKernelStackSwapEnable(IN BOOLEAN Enable)
Definition: thrdobj.c:997
#define PAGED_CODE()