Mercurial > hg > blitz_condensed
view src/org/dancres/blitz/disk/Syncable.java @ 34:6f68e94c1fb8 default tip
Add CondensedStats monitoring utility, equivalent to vmstat
author | Dominic Cleal <dominic-cleal@cdo2.com> |
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date | Thu, 05 Aug 2010 11:07:25 +0100 |
parents | 3dc0c5604566 |
children |
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package org.dancres.blitz.disk; /** Those involved in storage management should implement this interface and register with Disk. This facilitates, checkpointing and clean shutdown of Blitz. */ public interface Syncable { /** When called, the instance should synchronize all "dirtied" state to disk - i.e. if no further operations were carried out and the JVM was stopped, recovery wouldn't be necessary because the disk contains an accurate copy of the memory state at the point when sync() was invoked. */ public void sync() throws Exception; /** When called, the instance should close and release any files it is currently using. */ public void close() throws Exception; }