Class P3

Object
  P3

public class P3
extends Object

The Project 3 main class.
CS 537, Spring 2007, Project 3.

Field Summary

private static int	brewerCount Number of Brewers.
private static Brewer[]	brewers Brewers.
private static Thread[]	brewerThreads Brewer threads.
private static Random	rand Random number generator.
private static long	startTime Startup time (used to support the time() method.
private static Supplier	supplier The unique supplier.
private static boolean	verbose Flag to control debugging output.
private static int	VERSION Source version number.
private static Warehouse	warehouse The unique Warehouse.

Constructor Summary

P3()

Method Summary

static int	brewers() Returns the number of Brewers in the system.
static void	debug(Object message) If the debugging flag is on, prints a message, preceded by the name of the current thread.
static void	debug(String format, Object... args) If the debugging flag is on, prints a message, preceded by the name of the current thread.
static int	expo(int mean) Generates an exponentially distributed random number.
static Warehouse	getWarehouse() Returns the unique Warehouse instance.
static void	main(String[] args) Main program for project 3.
static int	randInt(int max) Utility to generate a random non-negative integer less than max.
static int	randInt(int min, int max) Utility to generate a random integer between min and max (inclusive).
static void	setVerbose(boolean on) Turns debugging output on or off.
static int	time() Handy procedure for timing.
private static void	usage() Prints a usage message and terminates.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VERSION

private static final int VERSION

Source version number.

See Also:

Constant Field Values

brewerCount

private static int brewerCount

Number of Brewers.

warehouse

private static Warehouse warehouse

The unique Warehouse.

brewers

private static Brewer[] brewers

Brewers.

brewerThreads

private static Thread[] brewerThreads

Brewer threads.

supplier

private static Supplier supplier

The unique supplier.

startTime

private static long startTime

Startup time (used to support the time() method.

verbose

private static boolean verbose

Flag to control debugging output.

rand

private static Random rand

Random number generator.

Constructor Detail

P3

public P3()

Method Detail

setVerbose

public static void setVerbose(boolean on)

Turns debugging output on or off.

Parameters:

on - if true, turn debugging on; otherwise turn it off.

getWarehouse

public static Warehouse getWarehouse()

Returns the unique Warehouse instance.

Returns:

the warehouse.

debug

public static void debug(Object message)

If the debugging flag is on, prints a message, preceded by the name of the current thread. If it is off, does nothing.

Parameters:

message - the message to print.

debug

public static void debug(String format,
                         Object... args)

If the debugging flag is on, prints a message, preceded by the name of the current thread. If it is off, does nothing.

Parameters:

format - a printf-like format for the message

args - arguments to the printf

time

public static int time()

Handy procedure for timing.

Returns:

the elapsed time since startup, in milliseconds.

brewers

public static int brewers()

Returns the number of Brewers in the system.

Returns:

the number of Brewers.

randInt

public static int randInt(int max)

Utility to generate a random non-negative integer less than max.

Parameters:

max - integer one greater than the largest possible result.

Returns:

a non-negative integer strictly less than max.

randInt

public static int randInt(int min,
                          int max)

Utility to generate a random integer between min and max (inclusive).

Parameters:

min - the smallest possible result.

max - the largest possible result.

Returns:

an integer between min and max, inclusive.

expo

public static int expo(int mean)

Generates an exponentially distributed random number.

Parameters:

mean - the mean of the distribution.

Returns:

the next sample value.

usage

private static void usage()

Prints a usage message and terminates.

main

public static void main(String[] args)

Main program for project 3.

Parameters:

args - the command-line arguments.