nachos.kernel.devices.test
Class NetworkTest

java.lang.Object
  extended by nachos.kernel.devices.test.NetworkTest

public class NetworkTest
extends java.lang.Object

Class for testing the nachos network. Two (or more) copies of nachos must be running, with machine ID's 0, 1, ... For example, with three copies of Nachos,
./run -d n -m 0 -nt 3 & ./run -d n -m 1 -nt 3 & ./run -d n -m 2 -nt 3 &
All the copies of nachos should be started at approximately the same time (before the 5 second delay in the first machine's Network constructor finishes); otherwise, messages may be lost. So, it's convenient to use a single command-line to start all the copies of nachos, as shown above. On the other hand, it's easier to see what's going on if you run each nachos in a separate terminal window (on the same computer). When using the network, nachos never terminates automatically, because it doesn't know whether it might receive another message. It will terminate only if a user program calls Halt or if you kill it externally (e.g., using the Unix or cygwin "kill" command, or using Windows's Task Manager).


Field Summary
private static byte me
          network address of this nachos machine.
private static byte numMach
          number of nachos machines in the network, including this one.
 
Constructor Summary
NetworkTest()
           
 
Method Summary
static void start(java.lang.String[] args)
          Entry point for the Network test.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

numMach

private static byte numMach
number of nachos machines in the network, including this one.


me

private static byte me
network address of this nachos machine.

Constructor Detail

NetworkTest

public NetworkTest()
Method Detail

start

public static void start(java.lang.String[] args)
Entry point for the Network test. If "-nt" is included in the command-line arguments, then run the network test; otherwise, do nothing. The network test sends a greeting to each other machine, and receives a greeting from each other machine.

Parameters:
args - Array containing command-line arguments