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DPC stands for Deferred Procedure Call.

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Filip Navara 2005-07-17 12:24:15 +00:00
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@ -33,7 +33,7 @@ DPCs
It is a design goal not to spend too much time in ISRs, for this reason It is a design goal not to spend too much time in ISRs, for this reason
ISRs should postpone most processing till it can run at a lower IRQL. The ISRs should postpone most processing till it can run at a lower IRQL. The
mechanism for this is a Delayed Procedure Call (DPC). When a DPC object is mechanism for this is a Deferred Procedure Call (DPC). When a DPC object is
created, it is associated with a function. The DPC object can then be inserted created, it is associated with a function. The DPC object can then be inserted
in the DPC queue from an ISR. If the IRQL on return from the ISR is less than in the DPC queue from an ISR. If the IRQL on return from the ISR is less than
DISPATCH_LEVEL the DPC queue will be drained, otherwise this will happen when DISPATCH_LEVEL the DPC queue will be drained, otherwise this will happen when