ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

root/jsr166/jsr166/src/main/java/util/concurrent/FairSemaphore.java

Comparing jsr166/src/main/java/util/concurrent/FairSemaphore.java (file contents):
Revision 1.3 by dl, Tue Jun 24 14:34:48 2003 UTC vs.
Revision 1.4 by dl, Tue Jul 8 00:46:33 2003 UTC

#	Line 5 | Line 5
5		*/
6
7		package java.util.concurrent;
8	+	import java.util.concurrent.locks.*;
9
10		/**
11		* A semaphore guaranteeing that threads invoking any of the {@link
#	Line 30 | Line 31 | package java.util.concurrent;
31		public class FairSemaphore extends Semaphore {
32
33		/*
34	<	* This differs from Semaphore only in that it uses a
35	<	* FairReentrantLock.  Because the FairReentrantLock guarantees
36	<	* FIFO queuing, we don't need to do anything fancy to prevent
34	>	* This differs from Semaphore only in that it uses a Fair
35	>	* ReentrantLock.  Because the Fair ReentrantLock guarantees FIFO
36	>	* queuing, we don't need to do anything fancy to prevent
37		* overtaking etc.  for the multiple-permit methods. The only
38		* minor downside is that multi-permit acquires will sometimes
39		* repeatedly wake up finding that they must re-wait. A custom
#	Line 46 | Line 47 | public class FairSemaphore extends Semap
47		* @param permits the initial number of permits available
48		*/
49		public FairSemaphore(long permits) {
50	<	super(permits, new FairReentrantLock());
50	>	super(permits, new ReentrantLock(true));
51		}
52
53		/**

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines