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1
5 package com.terracotta.session.util;
6
7 import com.tc.object.bytecode.Manager;
8 import com.tc.object.bytecode.ManagerUtil;
9
10 public class Lock {
11
12 private final Timer unlockTimer;
13 private final Timer lockTimer;
14 private final String  lockId;
15
16 private boolean isLocked = false;
17 private final int lockType;
18
19 public Lock(final String lockId) {
21 this(lockId, Manager.LOCK_TYPE_WRITE);
22 }
23
24 public Lock(final String lockId, final int lockType) {
25 if (lockType != Manager.LOCK_TYPE_SYNCHRONOUS_WRITE && lockType != Manager.LOCK_TYPE_WRITE) { throw new AssertionError (
26 "Trying to set lockType to "
27 + lockType
28 + " -- must be either write or synchronous-write"); }
29
30 this.lockType = lockType;
31 Assert.pre(lockId != null && lockId.length() > 0);
32 this.lockId = lockId;
33 lockTimer = new Timer(false);
34 unlockTimer = new Timer(false);
35 }
36
37 public void commitLock() {
38 unlockTimer.start();
39 ManagerUtil.commitLock(lockId);
40 isLocked = false;
41 unlockTimer.stop();
42 }
43
44 public void getWriteLock() {
45 lockTimer.start();
46 ManagerUtil.beginLock(lockId, lockType);
47 isLocked = true;
48 lockTimer.stop();
49 }
50
51 public boolean tryWriteLock() {
52 lockTimer.start();
53 isLocked = ManagerUtil.tryBeginLock(lockId, lockType);
54 lockTimer.stop();
55 return isLocked;
56 }
57
58 public Timer getLockTimer() {
59 return lockTimer;
60 }
61
62 public Timer getUnlockTimer() {
63 return unlockTimer;
64 }
65
66 public String getLockId() {
67 return lockId;
68 }
69
70 public boolean isLocked() {
71 return isLocked;
72 }
73 }
74 |
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