DpcLib.c

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#include <Uefi.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Protocol/Dpc.h>
 
//
// Pointer to the DPC Protocol
//
EFI_DPC_PROTOCOL  *mDpc;
 
EFI_STATUS
EFIAPI
DpcLibConstructor (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS  Status;
 
  //
  // Locate the EFI_DPC_PROTOCOL in the handle database
  //
  Status = gBS->LocateProtocol (&gEfiDpcProtocolGuid, NULL, (VOID **)&mDpc);
  ASSERT_EFI_ERROR (Status);
 
  return Status;
}
 
EFI_STATUS
EFIAPI
QueueDpc (
  IN EFI_TPL            DpcTpl,
  IN EFI_DPC_PROCEDURE  DpcProcedure,
  IN VOID               *DpcContext    OPTIONAL
  )
{
  //
  // Call the EFI_DPC_PROTOCOL to queue the DPC
  //
  return mDpc->QueueDpc (mDpc, DpcTpl, DpcProcedure, DpcContext);
}
 
EFI_STATUS
EFIAPI
DispatchDpc (
  VOID
  )
{
  //
  // Call the EFI_DPC_PROTOCOL to dispatch previously queued DPCs
  //
  return mDpc->DispatchDpc (mDpc);
}