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package configuration;
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import generic.Misc;
public class Configuration {
public static int ALU_count;
public static int ALU_latency;
public static int ALU_reciprocal_of_throughput;
public static int multiplier_count;
public static int multiplier_latency;
public static int multiplier_reciprocal_of_throughput;
public static int divider_count;
public static int divider_latency;
public static int divider_reciprocal_of_throughput;
public static int L1i_numberOfLines;
public static int L1i_latency;
public static int L1i_associativity;
public static String L1i_replacementPolicy;
public static int L1d_numberOfLines;
public static int L1d_latency;
public static int L1d_associativity;
public static String L1d_replacementPolicy;
public static int L2_numberOfLines;
public static int L2_latency;
public static int L2_associativity;
public static String L2_replacementPolicy;
public static int mainMemoryLatency;
public static void parseConfiguratioFile(String configFileName)
{
Document doc = null;
try
{
File file = new File(configFileName);
DocumentBuilderFactory DBFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder DBuilder = DBFactory.newDocumentBuilder();
doc = DBuilder.parse(file);
doc.getDocumentElement().normalize();
}
catch(Exception e)
{
e.printStackTrace();
Misc.printErrorAndExit("Error in reading config file : " + e);
}
NodeList nodeLst = doc.getElementsByTagName("ALU");
Element elmnt = (Element) nodeLst.item(0);
ALU_count = Integer.parseInt(getImmediateString("Count", elmnt));
ALU_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
ALU_reciprocal_of_throughput = Integer.parseInt(getImmediateString("ReciprocalOfThroughput", elmnt));
nodeLst = doc.getElementsByTagName("Multiplier");
elmnt = (Element) nodeLst.item(0);
multiplier_count = Integer.parseInt(getImmediateString("Count", elmnt));
multiplier_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
multiplier_reciprocal_of_throughput = Integer.parseInt(getImmediateString("ReciprocalOfThroughput", elmnt));
nodeLst = doc.getElementsByTagName("Divider");
elmnt = (Element) nodeLst.item(0);
divider_count = Integer.parseInt(getImmediateString("Count", elmnt));
divider_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
divider_reciprocal_of_throughput = Integer.parseInt(getImmediateString("ReciprocalOfThroughput", elmnt));
nodeLst = doc.getElementsByTagName("L1iCache");
elmnt = (Element) nodeLst.item(0);
L1i_numberOfLines = Integer.parseInt(getImmediateString("NumberOfLines", elmnt));
L1i_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
L1i_associativity = Integer.parseInt(getImmediateString("Associativity", elmnt));
L1i_replacementPolicy = getImmediateString("ReplacementPolicy", elmnt);
nodeLst = doc.getElementsByTagName("L1dCache");
elmnt = (Element) nodeLst.item(0);
L1d_numberOfLines = Integer.parseInt(getImmediateString("NumberOfLines", elmnt));
L1d_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
L1d_associativity = Integer.parseInt(getImmediateString("Associativity", elmnt));
L1d_replacementPolicy = getImmediateString("ReplacementPolicy", elmnt);
nodeLst = doc.getElementsByTagName("L2Cache");
elmnt = (Element) nodeLst.item(0);
L2_numberOfLines = Integer.parseInt(getImmediateString("NumberOfLines", elmnt));
L2_latency = Integer.parseInt(getImmediateString("Latency", elmnt));
L2_associativity = Integer.parseInt(getImmediateString("Associativity", elmnt));
L2_replacementPolicy = getImmediateString("ReplacementPolicy", elmnt);
nodeLst = doc.getElementsByTagName("Configuration");
elmnt = (Element) nodeLst.item(0);
mainMemoryLatency = Integer.parseInt(getImmediateString("MainMemoryLatency", elmnt));
}
private static String getImmediateString(String tagName, Element parent) // Get the immediate string value of a particular tag name under a particular parent tag
{
NodeList nodeLst = parent.getElementsByTagName(tagName);
if (nodeLst.item(0) == null)
{
Misc.printErrorAndExit("XML Configuration error : Item \"" + tagName + "\" not found inside the \"" + parent.getTagName() + "\" tag in the configuration file!!");
}
Element NodeElmnt = (Element) nodeLst.item(0);
NodeList resultNode = NodeElmnt.getChildNodes();
return ((Node) resultNode.item(0)).getNodeValue();
}
}