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root/i-scream/projects/cms/source/util/uk/org/iscream/cms/util/Queue.java

Comparing projects/cms/source/util/uk/org/iscream/cms/util/Queue.java (file contents):
Revision 1.15 by tdb, Thu Mar 1 01:18:09 2001 UTC vs.
Revision 1.19 by tdb, Thu Mar 22 18:23:27 2001 UTC

#	Line 1 | Line 1
1		//---PACKAGE DECLARATION---
2	<	package uk.ac.ukc.iscream.util;
2	>	package uk.org.iscream.util;
3
4		//---IMPORTS---
5		import java.util.LinkedList;
6		import java.util.NoSuchElementException;
7		import java.util.Random;
8	<	import uk.ac.ukc.iscream.util.*;
8	>	import uk.org.iscream.util.*;
9
10		/**
11		* A Queue class designed to operate in a multi-threaded environment, with
#	Line 49 | Line 49 | public class Queue {
49		*/
50		public static final int DROP = 3;
51
52	+	/**
53	+	* To allow opposite lookups.
54	+	*/
55	+	public static final String[] algorithms = {"RANDOM", "FIRST", "LAST", "DROP"};
56	+
57		//---STATIC METHODS---
58
59		//---CONSTRUCTORS---
#	Line 131 | Line 136 | public class Queue {
136		throw new InvalidQueueException("Requested queue "+queue+" does not exist");
137		}
138		// block if the queue is empty
139	<	if (((LinkedList) _lists.get(queue)).size() == 0) {
140	<	synchronized(((LinkedList) _lists.get(queue))) {
139	>	synchronized(((LinkedList) _lists.get(queue))) {
140	>	if (((LinkedList) _lists.get(queue)).size() == 0) {
141		try { ((LinkedList) _lists.get(queue)).wait(); } catch(Exception e) {}
142		}
143		}
#	Line 242 | Line 247 | public class Queue {
247		*
248		* @return An integer to be passed to the get() method.
249		*/
250	<	public int getQueue() {
250	>	public synchronized int getQueue() {
251		int pos = -1;
252		for(int i=0; i < _lists.size(); i++) {
253		if(_lists.get(i) == null) {
#	Line 266 | Line 271 | public class Queue {
271		*
272		* @param queue The integer identifier for the queue, given by getQueue().
273		*/
274	<	public void removeQueue(int queue) {
274	>	public synchronized void removeQueue(int queue) {
275		_lists.set(queue, null);
276		}
277
#	Line 327 | Line 332 | public class Queue {
332		* Overrides the {@link java.lang.Object#toString() Object.toString()}
333		* method to provide clean logging (every class should have this).
334		*
335	<	* This uses the uk.ac.ukc.iscream.util.FormatName class
335	>	* This uses the uk.org.iscream.util.FormatName class
336		* to format the toString()
337		*
338		* @return the name of this class and its CVS revision.

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