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sys: util: FSP_SYNCHRONOUS_WORK_ITEM

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This commit is contained in:
Bill Zissimopoulos 2015-12-23 23:04:20 -08:00
parent 4a33885b01
commit db1dc6fc91
2 changed files with 49 additions and 0 deletions
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12
src/sys/driver.h
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@ -274,6 +274,18 @@ VOID FspFreeExternal(PVOID Pointer)
/* utility: GUIDs */ /* utility: GUIDs */
NTSTATUS FspCreateGuid(GUID *Guid); NTSTATUS FspCreateGuid(GUID *Guid);
/* utility: synchronous work queue */
typedef struct
{
KEVENT Event;
PWORKER_THREAD_ROUTINE Routine;
PVOID Context;
WORK_QUEUE_ITEM WorkQueueItem;
} FSP_SYNCHRONOUS_WORK_ITEM;
VOID FspInitializeSynchronousWorkItem(FSP_SYNCHRONOUS_WORK_ITEM *SynchronousWorkItem,
PWORKER_THREAD_ROUTINE Routine, PVOID Context);
VOID FspExecuteSynchronousWorkItem(FSP_SYNCHRONOUS_WORK_ITEM *SynchronousWorkItem);
/* utility: delayed work queue */ /* utility: delayed work queue */
typedef struct typedef struct
{ {

37
src/sys/util.c
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@ -7,6 +7,10 @@
#include <sys/driver.h> #include <sys/driver.h>
NTSTATUS FspCreateGuid(GUID *Guid); NTSTATUS FspCreateGuid(GUID *Guid);
VOID FspInitializeSynchronousWorkItem(FSP_SYNCHRONOUS_WORK_ITEM *SynchronousWorkItem,
PWORKER_THREAD_ROUTINE Routine, PVOID Context);
VOID FspExecuteSynchronousWorkItem(FSP_SYNCHRONOUS_WORK_ITEM *SynchronousWorkItem);
static WORKER_THREAD_ROUTINE FspExecuteSynchronousWorkItemRoutine;
VOID FspInitializeDelayedWorkItem(FSP_DELAYED_WORK_ITEM *DelayedWorkItem, VOID FspInitializeDelayedWorkItem(FSP_DELAYED_WORK_ITEM *DelayedWorkItem,
PWORKER_THREAD_ROUTINE Routine, PVOID Context); PWORKER_THREAD_ROUTINE Routine, PVOID Context);
VOID FspQueueDelayedWorkItem(FSP_DELAYED_WORK_ITEM *DelayedWorkItem, LARGE_INTEGER Delay); VOID FspQueueDelayedWorkItem(FSP_DELAYED_WORK_ITEM *DelayedWorkItem, LARGE_INTEGER Delay);
@ -14,6 +18,9 @@ static KDEFERRED_ROUTINE FspQueueDelayedWorkItemDPC;
#ifdef ALLOC_PRAGMA #ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, FspCreateGuid) #pragma alloc_text(PAGE, FspCreateGuid)
#pragma alloc_text(PAGE, FspInitializeSynchronousWorkItem)
#pragma alloc_text(PAGE, FspExecuteSynchronousWorkItem)
#pragma alloc_text(PAGE, FspExecuteSynchronousWorkItemRoutine)
#pragma alloc_text(PAGE, FspInitializeDelayedWorkItem) #pragma alloc_text(PAGE, FspInitializeDelayedWorkItem)
#pragma alloc_text(PAGE, FspQueueDelayedWorkItem) #pragma alloc_text(PAGE, FspQueueDelayedWorkItem)
#endif #endif
@ -33,6 +40,36 @@ NTSTATUS FspCreateGuid(GUID *Guid)
return Result; return Result;
} }
VOID FspInitializeSynchronousWorkItem(FSP_SYNCHRONOUS_WORK_ITEM *SynchronousWorkItem,
PWORKER_THREAD_ROUTINE Routine, PVOID Context)
{
PAGED_CODE();
KeInitializeEvent(&SynchronousWorkItem->Event, NotificationEvent, FALSE);
SynchronousWorkItem->Routine = Routine;
SynchronousWorkItem->Context = Context;
ExInitializeWorkItem(&SynchronousWorkItem->WorkQueueItem,
FspExecuteSynchronousWorkItemRoutine, SynchronousWorkItem);
}
VOID FspExecuteSynchronousWorkItem(FSP_SYNCHRONOUS_WORK_ITEM *SynchronousWorkItem)
{
PAGED_CODE();
ExQueueWorkItem(&SynchronousWorkItem->WorkQueueItem, DelayedWorkQueue);
NTSTATUS Result;
Result = KeWaitForSingleObject(&SynchronousWorkItem->Event, Executive, KernelMode, FALSE, 0);
ASSERT(STATUS_SUCCESS == Result);
}
static VOID FspExecuteSynchronousWorkItemRoutine(PVOID Context)
{
PAGED_CODE();
FSP_SYNCHRONOUS_WORK_ITEM *SynchronousWorkItem = Context;
SynchronousWorkItem->Routine(SynchronousWorkItem->Context);
KeSetEvent(&SynchronousWorkItem->Event, 1, FALSE);
}
VOID FspInitializeDelayedWorkItem(FSP_DELAYED_WORK_ITEM *DelayedWorkItem, VOID FspInitializeDelayedWorkItem(FSP_DELAYED_WORK_ITEM *DelayedWorkItem,
PWORKER_THREAD_ROUTINE Routine, PVOID Context) PWORKER_THREAD_ROUTINE Routine, PVOID Context)
{ {