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comparison src/treecms/tree/util/LockableReference.java @ 23:77a894c0b919

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author shoshi
date Thu, 09 Jun 2011 01:03:48 +0900
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children 68021f7091e1
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22:fa784faafc78 23:77a894c0b919
1 package treecms.tree.util;
2
3 import java.util.concurrent.locks.ReentrantLock;
4
5 public class LockableReference<V>
6 {
7 private volatile V m_ref;
8 private volatile ReentrantLock m_lock;
9
10 public LockableReference(V _ref)
11 {
12 m_ref = _ref;
13 m_lock = new ReentrantLock();
14 }
15
16 public V get()
17 {
18 m_lock.lock();
19 V ref = m_ref;
20 m_lock.unlock();
21 return ref;
22 }
23
24 public void put(V _ref)
25 {
26 m_lock.lock();
27 m_ref = _ref;
28 m_lock.unlock();
29 }
30
31 public void lock()
32 {
33 m_lock.lock();
34 }
35
36 public void unlock()
37 {
38 m_lock.unlock();
39 }
40 }