koch

Class MCache

java.lang.Object

koch.MCache

public class MCache
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
MCache()

Method Summary

Modifier and Type	Method and Description
void	closeCache() Closes the cache.
static void	cycleTask() Task to , create a cache, put something in the cache, and bounce the VM.
java.lang.Object	getItem(java.lang.String id) Fetched the cached value with id "id".
void	putItem(java.lang.String id, java.lang.Object obj) Puts the item known as id into the cache.
void	setUpRegion() Creates cache regions (maps, basically) with the correct attributes for the job at hand.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MCache

public MCache()

Method Detail

getItem

public java.lang.Object getItem(java.lang.String id)

Fetched the cached value with id "id". After fetching, unload the value from the in-VM cache map (leaving it in shared memory). We're taking this unusual step because we don't anticipate needing the object again soon and thus can free VM memory that otherwise continue to be occupied by the object.

putItem

public void putItem(java.lang.String id,
                    java.lang.Object obj)

Puts the item known as id into the cache. Since we don't expect the loading VM to need this object again soon (perhaps ever) in the Koch application, we immediately unload it from the local VM map to save space.

setUpRegion

public void setUpRegion()

Creates cache regions (maps, basically) with the correct attributes for the job at hand. For the Koch experiments, regions will be replicated, meaning that an object added to any one cache will automatically be distributed to all other caches, remote or local.

closeCache

public void closeCache()

Closes the cache.

cycleTask

public static void cycleTask()

Task to , create a cache, put something in the cache, and bounce the VM. Intended for use in a single-threaded client VM, since it closes the cache each time around.