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comparison src/org/dancres/blitz/disk/Syncable.java @ 0:3dc0c5604566

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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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-1:000000000000 0:3dc0c5604566
1 package org.dancres.blitz.disk;
2
3 /**
4 Those involved in storage management should implement this interface and
5 register with Disk. This facilitates, checkpointing and clean shutdown
6 of Blitz.
7 */
8 public interface Syncable {
9 /**
10 When called, the instance should synchronize all "dirtied" state to
11 disk - i.e. if no further operations were carried out and the JVM
12 was stopped, recovery wouldn't be necessary because the disk contains
13 an accurate copy of the memory state at the point when sync() was
14 invoked.
15 */
16 public void sync() throws Exception;
17
18 /**
19 When called, the instance should close and release any files it is
20 currently using.
21 */
22 public void close() throws Exception;
23 }