NTSTATUS
Ext2QueueRequest (IN PEXT2_IRP_CONTEXT IrpContext)
{
ASSERT(IrpContext);
ASSERT((IrpContext->Identifier.Type == EXT2ICX) &&
(IrpContext->Identifier.Size == sizeof(EXT2_IRP_CONTEXT)));
/* set the flags of "can wait" and "queued" */
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT);
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_REQUEUED);
/* make sure the buffer is kept valid in system context */
Ext2LockIrp(IrpContext, IrpContext->Irp);
/* initialize workite*/
ExInitializeWorkItem(
&IrpContext->WorkQueueItem,
Ext2DeQueueRequest,
IrpContext );
/* dispatch it */
ExQueueWorkItem(&IrpContext->WorkQueueItem, CriticalWorkQueue);
return STATUS_PENDING;
}
VOID
CmpDoQueueLateUnloadWorker(IN PCMHIVE CmHive)
{
PWORK_QUEUE_ITEM WorkItem;
CM_PAGED_CODE();
ASSERT( CmHive->RootKcb != NULL );
//
// NB: Hive lock has higher precedence; We don't need the kcb lock as we are only checking the refcount
//
CmLockHive(CmHive);
if( (CmHive->RootKcb->RefCount == 1) && (CmHive->UnloadWorkItem == NULL) ) {
//
// the only reference on the rookcb is the one that we artificially created
// queue a work item to late unload the hive
//
WorkItem = ExAllocatePool(NonPagedPool, sizeof(WORK_QUEUE_ITEM));
if( InterlockedCompareExchangePointer(&(CmHive->UnloadWorkItem),WorkItem,NULL) == NULL ) {
ExInitializeWorkItem(CmHive->UnloadWorkItem,
CmpLateUnloadHiveWorker,
CmHive);
ExQueueWorkItem(CmHive->UnloadWorkItem, DelayedWorkQueue);
} else {
ExFreePool(WorkItem);
}
}
CmUnlockHive(CmHive);
}
VOID
ExpCheckSystemInformation (
PVOID Context,
PVOID InformationClass,
PVOID Argument2
)
/*++
Routine Description:
Callback function invoked when something in the system information
may have changed.
Arguments:
Context - Where invoked from.
InformationClass - which class for the given context was set
(ignored for now)
Argument2
Return Value:
--*/
{
ExQueueWorkItem (&ExpCheckSystemInfoWorkItem, DelayedWorkQueue);
}
NTSTATUS
DeviceArrivalCompletion(PDEVICE_OBJECT DeviceObject, PIRP Irp, PVOID Context)
{
PHUB_DEVICE_EXTENSION DeviceExtension;
LONG i;
PWORKITEMDATA WorkItemData;
DeviceExtension = (PHUB_DEVICE_EXTENSION)((PDEVICE_OBJECT)Context)->DeviceExtension;
for (i=0; i < DeviceExtension->UsbExtHubInfo.NumberOfPorts; i++)
DPRINT1("Port %x DeviceExtension->PortStatus %x\n",i+1, DeviceExtension->PortStatus[i]);
IoFreeIrp(Irp);
WorkItemData = ExAllocatePool(NonPagedPool, sizeof(WORKITEMDATA));
if (!WorkItemData)
{
DPRINT1("Failed to allocate memory\n");
return STATUS_NO_MEMORY;
}
RtlZeroMemory(WorkItemData, sizeof(WORKITEMDATA));
WorkItemData->Context = Context;
ExInitializeWorkItem(&WorkItemData->WorkItem, (PWORKER_THREAD_ROUTINE)WorkerThread, (PVOID)WorkItemData);
ExQueueWorkItem(&WorkItemData->WorkItem, DelayedWorkQueue);
return STATUS_MORE_PROCESSING_REQUIRED;
}
/*
@implemented
*/
KSDDKAPI
NTSTATUS
NTAPI
KsQueueWorkItem(
IN PKSWORKER Worker,
IN PWORK_QUEUE_ITEM WorkItem)
{
PKSIWORKER KsWorker;
KIRQL OldIrql;
/* check for all parameters */
if (!Worker || !WorkItem)
return STATUS_INVALID_PARAMETER;
/* get ks worker implementation */
KsWorker = (PKSIWORKER)Worker;
/* lock the work queue */
KeAcquireSpinLock(&KsWorker->Lock, &OldIrql);
/* insert work item to list */
InsertTailList(&KsWorker->QueuedWorkItems, &WorkItem->List);
/* increment active count */
InterlockedIncrement(&KsWorker->QueuedWorkItemCount);
/* is this the first work item */
if (KsWorker->QueuedWorkItemCount == 1)
{
/* clear event */
KeClearEvent(&KsWorker->Event);
/* it is, queue it */
ExQueueWorkItem(&KsWorker->WorkItem, KsWorker->Type);
}
/* release lock */
KeReleaseSpinLock(&KsWorker->Lock, OldIrql);
return STATUS_SUCCESS;
}
VOID
NTAPI
CcScheduleReadAhead(IN PFILE_OBJECT FileObject,
IN PLARGE_INTEGER FileOffset,
IN ULONG Length)
{
PWORK_QUEUE_WITH_READ_AHEAD WorkItem;
DPRINT("Schedule read ahead %08x%08x:%x %wZ\n",
FileOffset->HighPart,
FileOffset->LowPart,
Length,
&FileObject->FileName);
WorkItem = ExAllocatePool(NonPagedPool, sizeof(*WorkItem));
if (!WorkItem) KeBugCheck(0);
ObReferenceObject(FileObject);
WorkItem->FileObject = FileObject;
WorkItem->FileOffset = *FileOffset;
WorkItem->Length = Length;
ExInitializeWorkItem(((PWORK_QUEUE_ITEM)WorkItem),
(PWORKER_THREAD_ROUTINE)CcpReadAhead,
WorkItem);
ExQueueWorkItem((PWORK_QUEUE_ITEM)WorkItem, DelayedWorkQueue);
DPRINT("Done\n");
}
VOID
FFSQueueCloseRequest(
IN PFFS_IRP_CONTEXT IrpContext)
{
PAGED_CODE();
ASSERT(IrpContext);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
if (!IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_DELAY_CLOSE))
{
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_DELAY_CLOSE);
IrpContext->Fcb = (PFFS_FCB)IrpContext->FileObject->FsContext;
IrpContext->Ccb = (PFFS_CCB)IrpContext->FileObject->FsContext2;
IrpContext->FileObject = NULL;
}
// IsSynchronous means we can block (so we don't requeue it)
IrpContext->IsSynchronous = TRUE;
ExInitializeWorkItem(
&IrpContext->WorkQueueItem,
FFSDeQueueCloseRequest,
IrpContext);
ExQueueWorkItem(&IrpContext->WorkQueueItem, CriticalWorkQueue);
}
VOID
Ext2QueueCloseRequest (IN PEXT2_IRP_CONTEXT IrpContext)
{
ASSERT(IrpContext);
ASSERT((IrpContext->Identifier.Type == EXT2ICX) &&
(IrpContext->Identifier.Size == sizeof(EXT2_IRP_CONTEXT)));
if (IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_DELAY_CLOSE)) {
if (IsFlagOn(IrpContext->Flags, IRP_CONTEXT_FLAG_FILE_BUSY)) {
Ext2Sleep(500); /* 0.5 sec*/
} else {
Ext2Sleep(50); /* 0.05 sec*/
}
} else {
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT);
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_DELAY_CLOSE);
IrpContext->Fcb = (PEXT2_FCB) IrpContext->FileObject->FsContext;
IrpContext->Ccb = (PEXT2_CCB) IrpContext->FileObject->FsContext2;
}
ExInitializeWorkItem(
&IrpContext->WorkQueueItem,
Ext2DeQueueCloseRequest,
IrpContext);
ExQueueWorkItem(&IrpContext->WorkQueueItem, DelayedWorkQueue);
}
NTSTATUS
FFSQueueRequest(
IN PFFS_IRP_CONTEXT IrpContext)
{
ASSERT(IrpContext);
ASSERT((IrpContext->Identifier.Type == FFSICX) &&
(IrpContext->Identifier.Size == sizeof(FFS_IRP_CONTEXT)));
// IsSynchronous means we can block (so we don't requeue it)
IrpContext->IsSynchronous = TRUE;
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_REQUEUED);
IoMarkIrpPending(IrpContext->Irp);
ExInitializeWorkItem(
&IrpContext->WorkQueueItem,
FFSDeQueueRequest,
IrpContext);
ExQueueWorkItem(&IrpContext->WorkQueueItem, CriticalWorkQueue);
return STATUS_PENDING;
}
/*
* @implemented
*/
VOID
NTAPI
IoWriteErrorLogEntry(IN PVOID ElEntry)
{
PERROR_LOG_ENTRY LogEntry;
KIRQL Irql;
/* Get the main header */
LogEntry = (PERROR_LOG_ENTRY)((ULONG_PTR)ElEntry -
sizeof(ERROR_LOG_ENTRY));
/* Get time stamp */
KeQuerySystemTime(&LogEntry->TimeStamp);
/* Acquire the lock and insert this write in the list */
KeAcquireSpinLock(&IopLogListLock, &Irql);
InsertHeadList(&IopErrorLogListHead, &LogEntry->ListEntry);
/* Check if the worker is running */
if (!IopLogWorkerRunning)
{
#if 0
/* It's not, initialize it and queue it */
ExInitializeWorkItem(&IopErrorLogWorkItem,
IopLogWorker,
&IopErrorLogWorkItem);
ExQueueWorkItem(&IopErrorLogWorkItem, DelayedWorkQueue);
IopLogWorkerRunning = TRUE;
#endif
}
/* Release the lock and return */
KeReleaseSpinLock(&IopLogListLock, Irql);
}
BOOLEAN
CmpClaimGlobalQuota(
IN ULONG Size
)
/*++
Routine Description:
If CmpGlobalQuotaUsed + Size >= CmpGlobalQuotaAllowed, return
false. Otherwise, increment CmpGlobalQuotaUsed, in effect claiming
the requested GlobalQuota.
Arguments:
Size - number of bytes of GlobalQuota caller wants to claim
Return Value:
TRUE - Claim succeeded, and has been counted in Used GQ
FALSE - Claim failed, nothing counted in GQ.
--*/
{
LONG available;
PWORK_QUEUE_ITEM WorkItem;
//
// compute available space, then see if size <. This prevents overflows.
// Note that this must be signed. Since quota is not enforced until logon,
// it is possible for the available bytes to be negative.
//
available = (LONG)CmpGlobalQuotaAllowed - (LONG)CmpGlobalQuotaUsed;
if ((LONG)Size < available) {
CmpGlobalQuotaUsed += Size;
if ((CmpGlobalQuotaUsed > CmpGlobalQuotaWarning) &&
(!CmpQuotaWarningPopupDisplayed) &&
(ExReadyForErrors)) {
//
// Queue work item to display popup
//
WorkItem = ExAllocatePool(NonPagedPool, sizeof(WORK_QUEUE_ITEM));
if (WorkItem != NULL) {
CmpQuotaWarningPopupDisplayed = TRUE;
ExInitializeWorkItem(WorkItem,
CmpQuotaWarningWorker,
WorkItem);
ExQueueWorkItem(WorkItem, DelayedWorkQueue);
}
}
return TRUE;
} else {
return FALSE;
}
}
/*
* @implemented
*/
VOID
PostOnlineNotification(IN PDEVICE_EXTENSION DeviceExtension,
IN PUNICODE_STRING SymbolicName)
{
KIRQL OldIrql;
PONLINE_NOTIFICATION_WORK_ITEM WorkItem;
/* Allocate a notification work item */
WorkItem = AllocatePool(sizeof(ONLINE_NOTIFICATION_WORK_ITEM));
if (!WorkItem)
{
return;
}
WorkItem->List.Flink = NULL;
WorkItem->DeviceExtension = DeviceExtension;
WorkItem->WorkerRoutine = SendOnlineNotificationWorker;
WorkItem->Parameter = WorkItem;
WorkItem->SymbolicName.Length = SymbolicName->Length;
WorkItem->SymbolicName.MaximumLength = SymbolicName->Length + sizeof(WCHAR);
WorkItem->SymbolicName.Buffer = AllocatePool(WorkItem->SymbolicName.MaximumLength);
if (!WorkItem->SymbolicName.Buffer)
{
FreePool(WorkItem);
return;
}
RtlCopyMemory(WorkItem->SymbolicName.Buffer, SymbolicName->Buffer, SymbolicName->Length);
WorkItem->SymbolicName.Buffer[SymbolicName->Length / sizeof(WCHAR)] = UNICODE_NULL;
KeAcquireSpinLock(&(DeviceExtension->WorkerLock), &OldIrql);
DeviceExtension->OnlineNotificationCount++;
/* If no worker are active */
if (DeviceExtension->OnlineNotificationWorkerActive == 0)
{
/* Queue that one for execution */
DeviceExtension->OnlineNotificationWorkerActive = 1;
ExQueueWorkItem((PWORK_QUEUE_ITEM)WorkItem, DelayedWorkQueue);
}
else
{
/* Otherwise, just put it in the queue list */
InsertTailList(&(DeviceExtension->OnlineNotificationListHead), &(WorkItem->List));
}
KeReleaseSpinLock(&(DeviceExtension->WorkerLock), OldIrql);
return;
}
VOID
NTAPI
CmpLazyFlushDpcRoutine(IN PKDPC Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2)
{
/* Check if we should queue the lazy flush worker */
if ((!CmpLazyFlushPending) && (!CmpHoldLazyFlush))
{
CmpLazyFlushPending = TRUE;
ExQueueWorkItem(&CmpLazyWorkItem, DelayedWorkQueue);
}
}
VOID
NTAPI
IopLogDpcRoutine(IN PKDPC Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2)
{
/* If we have a DPC, free it */
if (Dpc) ExFreePool(Dpc);
/* Initialize and queue the work item */
ExInitializeWorkItem(&IopErrorLogWorkItem, IopLogWorker, NULL);
ExQueueWorkItem(&IopErrorLogWorkItem, DelayedWorkQueue);
}
VOID
NTAPI
CmpLazyFlushDpcRoutine(IN PKDPC Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2)
{
/* Check if we should queue the lazy flush worker */
DPRINT("Flush pending: %s, Holding lazy flush: %s.\n", CmpLazyFlushPending ? "yes" : "no", CmpHoldLazyFlush ? "yes" : "no");
if ((!CmpLazyFlushPending) && (!CmpHoldLazyFlush))
{
CmpLazyFlushPending = TRUE;
ExQueueWorkItem(&CmpLazyWorkItem, DelayedWorkQueue);
}
}
VOID
Ext2FloppyFlushDpc (
IN PKDPC Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2
)
{
PEXT2_FLPFLUSH_CONTEXT Context;
Context = (PEXT2_FLPFLUSH_CONTEXT) DeferredContext;
DEBUG(DL_FLP, ("Ext2FloppyFlushDpc is to be started...\n"));
ExQueueWorkItem(&Context->Item, CriticalWorkQueue);
}
NOT PAGEABLE -- MsReadTimeoutHandler
#endif
VOID
MsReadTimeoutHandler (
IN PKDPC Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2
)
/*++
Routine Description:
This routine is handles read timeouts. It is called as a DPC whenever
a read timer expires.
*** Non-Pageable ***
Arguments:
Dpc - A pointer to the DPC object.
DeferredContext - A pointer to the data queue entry associated with
this timer.
SystemArgument1, SystemArgument2 - Unused.
Return Value:
None.
--*/
{
PWORK_CONTEXT workContext;
Dpc, SystemArgument1, SystemArgument2; // prevent warnings
//
// Enqueue this packet to an ex worker thread.
//
workContext = DeferredContext;
ExQueueWorkItem( &workContext->WorkItem, CriticalWorkQueue );
}
/*
* @implemented
*/
VOID
NTAPI
SendOnlineNotificationWorker(IN PVOID Parameter)
{
KIRQL OldIrql;
PLIST_ENTRY Head;
PDEVICE_EXTENSION DeviceExtension;
PONLINE_NOTIFICATION_WORK_ITEM WorkItem;
PONLINE_NOTIFICATION_WORK_ITEM NewWorkItem;
WorkItem = (PONLINE_NOTIFICATION_WORK_ITEM)Parameter;
DeviceExtension = WorkItem->DeviceExtension;
/* First, send the notification */
SendOnlineNotification(&(WorkItem->SymbolicName));
KeAcquireSpinLock(&(DeviceExtension->WorkerLock), &OldIrql);
/* If there are no notifications running any longer, reset event */
if (--DeviceExtension->OnlineNotificationCount == 0)
{
KeSetEvent(&(DeviceExtension->OnlineNotificationEvent), 0, FALSE);
}
/* If there are still notifications in queue */
if (!IsListEmpty(&(DeviceExtension->OnlineNotificationListHead)))
{
/* Queue a new one for execution */
Head = RemoveHeadList(&(DeviceExtension->OnlineNotificationListHead));
NewWorkItem = CONTAINING_RECORD(Head, ONLINE_NOTIFICATION_WORK_ITEM, List);
KeReleaseSpinLock(&(DeviceExtension->WorkerLock), OldIrql);
NewWorkItem->List.Blink = NULL;
NewWorkItem->List.Flink = NULL;
ExQueueWorkItem((PWORK_QUEUE_ITEM)NewWorkItem, DelayedWorkQueue);
}
else
{
/* Mark it's over */
DeviceExtension->OnlineNotificationWorkerActive = 0;
KeReleaseSpinLock(&(DeviceExtension->WorkerLock), OldIrql);
}
FreePool(WorkItem->SymbolicName.Buffer);
FreePool(WorkItem);
return;
}
VOID
CmpRaiseSelfHealWarningWorker(
IN PVOID Arg
)
{
PVOID ErrorParameters;
ULONG ErrorResponse;
PCM_SELF_HEAL_WORK_ITEM_PARAMETER Param;
Param = (PCM_SELF_HEAL_WORK_ITEM_PARAMETER)Arg;
ErrorParameters = &(Param->HiveName);
ExRaiseHardError(
STATUS_REGISTRY_HIVE_RECOVERED,
1,
1,
(PULONG_PTR)&ErrorParameters,
OptionOk,
&ErrorResponse
);
//
// free what we have allocated
//
ExFreePool(Param->WorkItem);
ExFreePool(Param);
//
// see if there are other self heal warnings to be posted.
//
LOCK_SELF_HEAL_QUEUE();
CmpSelfHealWorkerActive = FALSE;
if( IsListEmpty(&CmpSelfHealQueueListHead) == FALSE ) {
//
// remove head and queue it.
//
Param = (PCM_SELF_HEAL_WORK_ITEM_PARAMETER)RemoveHeadList(&CmpSelfHealQueueListHead);
Param = CONTAINING_RECORD(
Param,
CM_SELF_HEAL_WORK_ITEM_PARAMETER,
SelfHealQueueListEntry
);
ExQueueWorkItem(Param->WorkItem, DelayedWorkQueue);
CmpSelfHealWorkerActive = TRUE;
}
UNLOCK_SELF_HEAL_QUEUE();
}
NTSTATUS dc_probe_mount(dev_hook *hook, PIRP irp)
{
mount_ctx *mnt;
if ( (mnt = mm_pool_alloc(sizeof(mount_ctx))) == NULL ) {
return dc_release_irp(hook, irp, STATUS_INSUFFICIENT_RESOURCES);
}
IoMarkIrpPending(irp);
mnt->irp = irp;
mnt->hook = hook;
ExInitializeWorkItem(&mnt->wrk_item, mount_item_proc, mnt);
ExQueueWorkItem(&mnt->wrk_item, DelayedWorkQueue);
return STATUS_PENDING;
}
VOID
IopErrorLogDpc(
IN struct _KDPC *Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2
)
/*++
Routine Description:
This routine queues a work request to the worker thread to process logged
errors. It is called by a timer DPC when the error log port cannot be
connected. The DPC structure itself is freed by this routine.
Arguments:
Dpc - Supplies a pointer to the DPC structure. This structure is freed by
this routine.
DeferredContext - Unused.
SystemArgument1 - Unused.
SystemArgument2 - Unused.
Return Value:
None
--*/
{
//
// Free the DPC structure if there is one.
//
if (Dpc != NULL) {
ExFreePool(Dpc);
}
ExInitializeWorkItem( &IopErrorLogWorkItem, IopErrorLogThread, NULL );
ExQueueWorkItem( &IopErrorLogWorkItem, DelayedWorkQueue );
}
NTSTATUS
USBSTOR_QueueWorkItem(
PIRP_CONTEXT Context,
PIRP Irp)
{
PERRORHANDLER_WORKITEM_DATA ErrorHandlerWorkItemData;
//
// Allocate Work Item Data
//
ErrorHandlerWorkItemData = ExAllocatePoolWithTag(NonPagedPool, sizeof(ERRORHANDLER_WORKITEM_DATA), USB_STOR_TAG);
if (!ErrorHandlerWorkItemData)
{
//
// no memory
//
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// error handling started
//
Context->FDODeviceExtension->SrbErrorHandlingActive = TRUE;
//
// srb error handling finished
//
Context->FDODeviceExtension->TimerWorkQueueEnabled = FALSE;
//
// Initialize and queue the work item to handle the error
//
ExInitializeWorkItem(&ErrorHandlerWorkItemData->WorkQueueItem,
ErrorHandlerWorkItemRoutine,
ErrorHandlerWorkItemData);
ErrorHandlerWorkItemData->DeviceObject = Context->FDODeviceExtension->FunctionalDeviceObject;
ErrorHandlerWorkItemData->Context = Context;
ErrorHandlerWorkItemData->Irp = Irp;
ErrorHandlerWorkItemData->DeviceObject = Context->FDODeviceExtension->FunctionalDeviceObject;
DPRINT1("Queuing WorkItemROutine\n");
ExQueueWorkItem(&ErrorHandlerWorkItemData->WorkQueueItem, DelayedWorkQueue);
return STATUS_MORE_PROCESSING_REQUIRED;
}
VOID
NTAPI
FatQueueRequest(IN PFAT_IRP_CONTEXT IrpContext,
IN PFAT_OPERATION_HANDLER OperationHandler)
{
/* Save the worker routine. */
IrpContext->QueuedOperationHandler = OperationHandler;
/* Indicate if top level IRP was set. */
if (IoGetTopLevelIrp() == IrpContext->Irp)
SetFlag(IrpContext->Flags, IRPCONTEXT_TOPLEVEL);
/* Initialize work item. */
ExInitializeWorkItem(&IrpContext->WorkQueueItem,
FatDequeueRequest,
IrpContext);
ExQueueWorkItem(&IrpContext->WorkQueueItem,
DelayedWorkQueue);
}
void dc_unmount_async(dev_hook *hook)
{
mount_ctx *mnt;
DbgMsg("dc_unmount_async at IRQL %d\n", KeGetCurrentIrql());
if (mnt = mm_pool_alloc(sizeof(mount_ctx)))
{
mnt->hook = hook; dc_reference_hook(hook);
if (KeGetCurrentIrql() != PASSIVE_LEVEL)
{
ExInitializeWorkItem(&mnt->wrk_item, unmount_item_proc, mnt);
ExQueueWorkItem(&mnt->wrk_item, DelayedWorkQueue);
} else {
unmount_item_proc(mnt);
}
}
}
VOID
FFSFloppyFlushDpc(
IN PKDPC Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2)
{
PFFS_FLPFLUSH_CONTEXT Context;
Context = (PFFS_FLPFLUSH_CONTEXT)DeferredContext;
FFSPrint((DBG_USER, "FFSFloppyFlushDpc is to be started...\n"));
ExInitializeWorkItem(&Context->Item,
FFSFloppyFlush,
Context);
ExQueueWorkItem(&Context->Item, CriticalWorkQueue);
}
/*
* @implemented
*/
VOID
NTAPI
IoQueueWorkItem(IN PIO_WORKITEM IoWorkItem,
IN PIO_WORKITEM_ROUTINE WorkerRoutine,
IN WORK_QUEUE_TYPE QueueType,
IN PVOID Context)
{
/* Make sure we're called at DISPATCH or lower */
ASSERT_IRQL_LESS_OR_EQUAL(DISPATCH_LEVEL);
/* Reference the device object */
ObReferenceObject(IoWorkItem->DeviceObject);
/* Setup the work item */
IoWorkItem->WorkerRoutine = WorkerRoutine;
IoWorkItem->Context = Context;
/* Queue the work item */
ExQueueWorkItem(&IoWorkItem->Item, QueueType);
}
VOID APCInjectRoutine(PKAPC pkaApc, PKNORMAL_ROUTINE*, PVOID*, PVOID*, PVOID*)
{
WI_INJECT wiiItem;
ExFreePool(pkaApc);
wiiItem.pktThread = KeGetCurrentThread();
wiiItem.pepProcess = IoGetCurrentProcess();
wiiItem.hProcessID = PsGetCurrentProcessId();
KeInitializeEvent(&wiiItem.keEvent, NotificationEvent, FALSE);
ExInitializeWorkItem(&wiiItem.qiItem, InjectorWorkItem, &wiiItem);
ExQueueWorkItem(&wiiItem.qiItem, DelayedWorkQueue);
//was KernelMode not work do UserMode and work
KeWaitForSingleObject(&wiiItem.keEvent, Executive, UserMode, TRUE, 0);
return;
}
VOID
CmpDelayCloseDpcRoutine(
IN PKDPC Dpc,
IN PVOID DeferredContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2
)
/*++
Routine Description:
This is the DPC routine triggered by the delayclose timer.
is queue a work item to an executive worker thread.
Arguments:
Dpc - Supplies a pointer to the DPC object.
DeferredContext - not used
SystemArgument1 - not used
SystemArgument2 - not used
Return Value:
None.
--*/
{
UNREFERENCED_PARAMETER (Dpc);
UNREFERENCED_PARAMETER (DeferredContext);
UNREFERENCED_PARAMETER (SystemArgument1);
UNREFERENCED_PARAMETER (SystemArgument2);
ASSERT(CmpDelayCloseWorkItemActive);
ExQueueWorkItem(&CmpDelayCloseWorkItem, DelayedWorkQueue);
}
VOID
CcPostWorkQueue(
IN PWORK_QUEUE_ENTRY WorkItem,
IN PLIST_ENTRY WorkQueue)
{
KIRQL OldIrql;
PWORK_QUEUE_ITEM ThreadToSpawn;
/* First of all, insert the item in the queue */
OldIrql = KeAcquireQueuedSpinLock(LockQueueWorkQueueLock);
InsertTailList(WorkQueue, &WorkItem->WorkQueueLinks);
/* Now, define whether we have to spawn a new work thread
* We will spawn a new one if:
* - There's no throttle in action
* - There's still at least one idle thread
*/
ThreadToSpawn = NULL;
if (!CcQueueThrottle && !IsListEmpty(&CcIdleWorkerThreadList))
{
PLIST_ENTRY ListEntry;
/* Get the idle thread */
ListEntry = RemoveHeadList(&CcIdleWorkerThreadList);
ThreadToSpawn = CONTAINING_RECORD(ListEntry, WORK_QUEUE_ITEM, List);
/* We're going to have one more! */
CcNumberActiveWorkerThreads += 1;
}
KeReleaseQueuedSpinLock(LockQueueWorkQueueLock, OldIrql);
/* If we have a thread to spawn, do it! */
if (ThreadToSpawn != NULL)
{
/* We NULLify it to be consistent with initialization */
ThreadToSpawn->List.Flink = NULL;
ExQueueWorkItem(ThreadToSpawn, CriticalWorkQueue);
}
}
NTSTATUS dc_power_irp(dev_hook *hook, PIRP irp)
{
pw_irp_ctx *pwc;
if (KeGetCurrentIrql() == PASSIVE_LEVEL) {
return dc_process_power_irp(hook, irp);
}
if ( (pwc = mm_alloc(sizeof(pw_irp_ctx), 0)) == NULL )
{
PoStartNextPowerIrp(irp);
return dc_release_irp(hook, irp, STATUS_INSUFFICIENT_RESOURCES);
}
pwc->hook = hook;
pwc->irp = irp;
IoMarkIrpPending(irp);
ExInitializeWorkItem(&pwc->wrk_item, dc_power_irp_worker, pwc);
ExQueueWorkItem(&pwc->wrk_item, DelayedWorkQueue);
return STATUS_PENDING;
}