public static void main(String[] args) throws java.io.IOException {
if (args.length < 1) {
System.err.println("Usage java TestHarness <input file> <R1> <R2> ...");
System.exit(-1);
}
// get the name of the input file
String inputFile = args[0];
// now get the resources
int numOfResources = args.length - 1;
// the initial number of resources
int[] initialResources = new int[numOfResources];
// the resources involved in the transaction
int[] resources = new int[numOfResources];
for (int i = 0; i < numOfResources; i++)
initialResources[i] = Integer.parseInt(args[i + 1].trim());
// create the bank
Bank theBank = new BankImpl(initialResources);
int[] maxDemand = new int[numOfResources];
// read initial values for maximum array
String line;
try {
BufferedReader inFile = new BufferedReader(new FileReader(inputFile));
int threadNum = 0;
int resourceNum = 0;
for (int i = 0; i < Customer.COUNT; i++) {
line = inFile.readLine();
StringTokenizer tokens = new StringTokenizer(line, ",");
while (tokens.hasMoreTokens()) {
int amt = Integer.parseInt(tokens.nextToken().trim());
maxDemand[resourceNum++] = amt;
}
theBank.addCustomer(threadNum, maxDemand);
++threadNum;
resourceNum = 0;
}
} catch (FileNotFoundException fnfe) {
throw new Error("Unable to find file " + inputFile);
} catch (IOException ioe) {
throw new Error("Error processing " + inputFile);
}
// now loop reading requests
BufferedReader cl = new BufferedReader(new InputStreamReader(System.in));
int[] requests = new int[numOfResources];
String requestLine;
while ((requestLine = cl.readLine()) != null) {
if (requestLine.equals("")) continue;
if (requestLine.equals("*"))
// output the state
theBank.getState();
else {
// we know that we are reading N items on the command line
// [RQ || RL] <customer number> <resource #1> <#2> <#3>
StringTokenizer tokens = new StringTokenizer(requestLine);
// get transaction type - request (RQ) or release (RL)
String trans = tokens.nextToken().trim();
// get the customer number making the tranaction
int custNum = Integer.parseInt(tokens.nextToken().trim());
// get the resources involved in the transaction
for (int i = 0; i < numOfResources; i++) {
resources[i] = Integer.parseInt(tokens.nextToken().trim());
System.out.println("*" + resources[i] + "*");
}
// now check the transaction type
if (trans.equals("RQ")) { // request
if (theBank.requestResources(custNum, resources)) System.out.println("Approved");
else System.out.println("Denied");
} else if (trans.equals("RL")) // release
theBank.releaseResources(custNum, resources);
else // illegal request
System.err.println("Must be either 'RQ' or 'RL'");
}
}
}
