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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
SimpleLock.java | - | 0% | 0% | 0% |
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1 | /* | |
2 | * JBoss, the OpenSource J2EE webOS | |
3 | * | |
4 | * Distributable under LGPL license. | |
5 | * See terms of license at gnu.org. | |
6 | */ | |
7 | package org.jboss.cache.lock; | |
8 | ||
9 | import java.util.concurrent.locks.Lock; | |
10 | ||
11 | /** | |
12 | * Simple lock that does not differentiate read and write lock. All locks are obtained FIFO. | |
13 | * This class is used as a delegate for LockStrategy | |
14 | * is transaction isolation level. | |
15 | * | |
16 | * @author <a href="mailto:bwang00@sourceforge.net">Ben Wang</a> July 15, 2003 | |
17 | * @version $Revision: 1.4 $ | |
18 | */ | |
19 | public class SimpleLock | |
20 | { | |
21 | // Log log=LogFactory.getLog(getClass()); | |
22 | private SemaphoreLock sem_; | |
23 | ||
24 | 0 | public SimpleLock() |
25 | { | |
26 | 0 | sem_ = new SemaphoreLock(1); |
27 | } | |
28 | ||
29 | /** | |
30 | * @see org.jboss.cache.lock.LockStrategy#readLock() | |
31 | */ | |
32 | 0 | public Lock readLock() |
33 | { | |
34 | 0 | return sem_; |
35 | } | |
36 | ||
37 | /** | |
38 | * @see org.jboss.cache.lock.LockStrategy#upgradeLockAttempt(long) | |
39 | */ | |
40 | 0 | public Lock upgradeLockAttempt(long msecs) |
41 | { | |
42 | 0 | return sem_; |
43 | } | |
44 | ||
45 | /** | |
46 | * @see org.jboss.cache.lock.LockStrategy#writeLock() | |
47 | */ | |
48 | 0 | public Lock writeLock() |
49 | { | |
50 | 0 | return sem_; |
51 | } | |
52 | } |
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