org.apache.tomcat.util.collections
Class Queue

java.lang.Object
  org.apache.tomcat.util.collections.Queue

public class Queue

extends java.lang.Object

A simple FIFO queue class which causes the calling thread to wait if the queue is empty and notifies threads that are waiting when it is not empty.

Author:

Anil V (akv@eng.sun.com)

Constructor Summary

Queue()

Method Summary

java.lang.Object	get() Get the first object out of the queue.
boolean	isEmpty() Is the queue empty?
java.lang.Object	peek() Peek to see if something is available.
java.lang.Object	pull() Pull the first object out of the queue.
void	put(java.lang.Object object) Put the object into the queue.
int	size() How many elements are there in this queue?
void	stop() Break the pull(), allowing the calling thread to exit

Methods inherited from class java.lang.Object

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

Constructor Detail

Queue

public Queue()

Method Detail

put

public void put(java.lang.Object object)

Put the object into the queue.

Parameters:

object - the object to be appended to the queue.

stop

public void stop()

Break the pull(), allowing the calling thread to exit

pull

public java.lang.Object pull()

Pull the first object out of the queue. Wait if the queue is empty.

get

public java.lang.Object get()

Get the first object out of the queue. Return null if the queue is empty.

peek

public java.lang.Object peek()

Peek to see if something is available.

isEmpty

public boolean isEmpty()

Is the queue empty?

size

public int size()

How many elements are there in this queue?