Win32_DMAChannel - WMI sample in Perl

The foundations for Manageability in Windows 7/2008/Vista/XP/2000 and Millennium Edition/'98 are Windows Management Instrumentation (WMI; formerly WBEM) and WMI extensions for Windows Driver Model (WDM).

ActiveXperts Network Monitor provides the ability to build monitor check routines based on WMI. ActiveXperts has collected more than a hundred WMI samples. You can use these samples as a base for new check routines you can write yourself.

On this site, you can find many WMI samples.


Win32_DMAChannel

Description

The Win32_DMAChannel WMI class represents a direct memory access (DMA) channel on a Windows computer system. DMA is a method of moving data from a device to memory (or vice versa) without the help of the microprocessor. The system board uses a DMA controller to handle a fixed number of channels, each of which can be used by one (and only one) device at a time.

Example(s)

use strict;
use Win32::OLE('in');

use constant wbemFlagReturnImmediately => 0x10;
use constant wbemFlagForwardOnly => 0x20;

my @computers = ("DELL17");
foreach my $computer (@computers) {
   print "\n";
   print "==========================================\n";
   print "Computer: $computer\n";
   print "==========================================\n";

   my $objWMIService = Win32::OLE->GetObject("winmgmts:\\\\$computer\\root\\CIMV2") or die "WMI connection failed.\n";
   my $colItems = $objWMIService->ExecQuery("SELECT * FROM Win32_DMAChannel", "WQL",
                  wbemFlagReturnImmediately | wbemFlagForwardOnly);

   foreach my $objItem (in $colItems) {
      print "AddressSize: $objItem->{AddressSize}\n";
      print "Availability: $objItem->{Availability}\n";
      print "BurstMode: $objItem->{BurstMode}\n";
      print "ByteMode: $objItem->{ByteMode}\n";
      print "Caption: $objItem->{Caption}\n";
      print "ChannelTiming: $objItem->{ChannelTiming}\n";
      print "CreationClassName: $objItem->{CreationClassName}\n";
      print "CSCreationClassName: $objItem->{CSCreationClassName}\n";
      print "CSName: $objItem->{CSName}\n";
      print "Description: $objItem->{Description}\n";
      print "DMAChannel: $objItem->{DMAChannel}\n";
      print "InstallDate: $objItem->{InstallDate}\n";
      print "MaxTransferSize: $objItem->{MaxTransferSize}\n";
      print "Name: $objItem->{Name}\n";
      print "Port: $objItem->{Port}\n";
      print "Status: $objItem->{Status}\n";
      print "TransferWidths: " . join(",", (in $objItem->{TransferWidths})) . "\n";
      print "TypeCTiming: $objItem->{TypeCTiming}\n";
      print "WordMode: $objItem->{WordMode}\n";
      print "\n";
   }
}sub WMIDateStringToDate(strDate)
{
   return "blah";
}