152 lines
3.4 KiB
C++
152 lines
3.4 KiB
C++
/**
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* PROJECT: ExectOS
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* COPYRIGHT: See COPYING.md in the top level directory
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* FILE: xtoskrnl/ke/dpc.cc
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* DESCRIPTION: Deferred Procedure Call (DPC) support
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include <xtos.hh>
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/**
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* Initializes Deferred Procedure Call (DPC) object.
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*
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* @param Dpc
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* Supplies a pointer to the DPC being initialized.
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*
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* @param DpcRoutine
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* Supplies a pointer to the DPC routine being called on object removal.
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*
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* @param DpcContext
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* Supplies a pointer to memory area containing context data for DPC routine.
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*
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* @return This routine does not return any value.
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*
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* @since NT 3.5
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*/
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XTAPI
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VOID
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KE::Dpc::InitializeDpc(IN PKDPC Dpc,
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IN PKDEFERRED_ROUTINE DpcRoutine,
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IN PVOID DpcContext)
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{
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/* Initialize DPC */
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Dpc->Type = DpcObject;
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Dpc->Number = 0;
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Dpc->Importance = MediumImportance;
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/* Initialize DPC routine and context data */
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Dpc->DeferredContext = DpcContext;
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Dpc->DeferredRoutine = DpcRoutine;
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Dpc->DpcData = NULL;
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}
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/**
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* Initializes Deferred Procedure Call (DPC) object.
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*
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* @param Dpc
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* Supplies a pointer to the DPC being initialized.
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*
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* @param DpcRoutine
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* Supplies a pointer to the DPC routine being called on object removal.
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*
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* @param DpcContext
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* Supplies a pointer to memory area containing context data for DPC routine.
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*
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* @return This routine does not return any value.
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*
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* @since NT 5.2
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*/
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XTAPI
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VOID
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KE::Dpc::InitializeThreadedDpc(IN PKDPC Dpc,
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IN PKDEFERRED_ROUTINE DpcRoutine,
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IN PVOID DpcContext)
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{
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/* Initialize threaded DPC */
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Dpc->Type = ThreadedDpcObject;
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Dpc->Number = 0;
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Dpc->Importance = MediumImportance;
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/* Initialize DPC routine and context data */
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Dpc->DeferredContext = DpcContext;
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Dpc->DeferredRoutine = DpcRoutine;
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Dpc->DpcData = NULL;
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}
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/**
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* Sets the target processor number for DPC.
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*
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* @param Dpc
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* Supplies a pointer to the DPC object.
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*
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* @param Number
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* Supplies the target processor number.
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*
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* @return This routine does not return any value.
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*
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* @since NT 4.0
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*/
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XTAPI
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VOID
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KE::Dpc::SetTargetProcessor(IN PKDPC Dpc,
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IN CCHAR Number)
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{
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Dpc->Number = MAXIMUM_PROCESSORS + Number;
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}
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/**
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* Decrements the DPC call barier.
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*
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* @param SystemArgument
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* Supplies an address of the DPC call barrier.
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*
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* @return This routine does not return any value.
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*
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* @since NT 5.2
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*/
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XTAPI
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VOID
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KE::Dpc::SignalCallDone(IN PVOID SystemArgument)
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{
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RTL::Atomic::Decrement32((PLONG)SystemArgument);
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}
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/**
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* Decrements the DPC call reverse barier.
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*
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* @param SystemArgument
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* Supplies an address of the DPC call barrier.
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*
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* @return This routine returns TRUE if just one processor is waiting on the barrier, FALSE if more.
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*
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* @since NT 5.2
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*/
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XTAPI
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BOOLEAN
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KE::Dpc::SignalCallSynchronize(IN PVOID SystemArgument)
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{
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UNIMPLEMENTED;
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/* SMP not yet implemented, return TRUE */
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return TRUE;
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}
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/**
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* Retires the expired DPC objects found in the DPC list.
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*
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* @param Prcb
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* Supplies apointer to the Prcessor Control Block (PRCB).
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTFASTCALL
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VOID
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KE::Dpc::RetireList(IN PKPROCESSOR_CONTROL_BLOCK Prcb)
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{
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UNIMPLEMENTED;
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}
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