reactos/ntoskrnl/io/iomgr/iowork.c
Hermès Bélusca-Maïto b819608ed8 Create a branch for console restructuration work.
svn path=/branches/condrv_restructure/; revision=63104
2014-05-02 14:13:40 +00:00

94 lines
2.3 KiB
C

/*
* PROJECT: ReactOS Kernel
* LICENSE: GPL - See COPYING in the top level directory
* FILE: ntoskrnl/io/iowork.c
* PURPOSE: I/O Wrappers for the Executive Work Item Functions
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
* Robert Dickenson (odin@pnc.com.au)
*/
/* INCLUDES ******************************************************************/
#include <ntoskrnl.h>
#define NDEBUG
#include <debug.h>
/* PRIVATE FUNCTIONS *********************************************************/
VOID
NTAPI
IopWorkItemCallback(IN PVOID Parameter)
{
PIO_WORKITEM IoWorkItem = (PIO_WORKITEM)Parameter;
PDEVICE_OBJECT DeviceObject = IoWorkItem->DeviceObject;
PAGED_CODE();
/* Call the work routine */
IoWorkItem->WorkerRoutine(DeviceObject, IoWorkItem->Context);
/* Dereference the device object */
ObDereferenceObject(DeviceObject);
}
/* PUBLIC FUNCTIONS **********************************************************/
/*
* @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);
}
/*
* @implemented
*/
VOID
NTAPI
IoFreeWorkItem(IN PIO_WORKITEM IoWorkItem)
{
/* Free the work item */
ExFreePool(IoWorkItem);
}
/*
* @implemented
*/
PIO_WORKITEM
NTAPI
IoAllocateWorkItem(IN PDEVICE_OBJECT DeviceObject)
{
PIO_WORKITEM IoWorkItem;
/* Allocate the work item */
IoWorkItem = ExAllocatePoolWithTag(NonPagedPool,
sizeof(IO_WORKITEM),
TAG_IOWI);
if (!IoWorkItem) return NULL;
/* Initialize it */
IoWorkItem->DeviceObject = DeviceObject;
ExInitializeWorkItem(&IoWorkItem->Item, IopWorkItemCallback, IoWorkItem);
/* Return it */
return IoWorkItem;
}
/* EOF */