com.aspc.remote.memory.selftest.deadlock

Class SlowMemoryHandler

java.lang.Object

com.aspc.remote.memory.selftest.deadlock.SlowMemoryHandler

All Implemented Interfaces:

MemoryHandler

public class SlowMemoryHandler
extends java.lang.Object
implements MemoryHandler

Test the wrapper classes for Trans header, record and data
THREAD MODE: SINGLE-THREADED self test unit

Since:

27 October 2002

Author:

Nigel Leck

Nested Class Summary

Nested classes/interfaces inherited from interface com.aspc.remote.memory.MemoryHandler

MemoryHandler.Cost

Constructor Summary

Constructors

Constructor and Description
SlowMemoryHandler() show memory handler

Method Summary

Modifier and Type	Method and Description
long	freeMemory(double percentage) Free memory at this level and below.
MemoryHandler.Cost	getCost() The cost level for this MemoryHandler.
long	getEstimatedSize() The estimated size of data held by this memory handler
long	getLastAccessed() The last time this memory handle was accessed
long	panicFreeMemory() Clear all memory ASAP.
long	queuedFreeMemory(double percentage) This method should implement the freeing of the method and maybe synchronized.
void	remove(java.lang.String key)
long	tidyUp() Tidy up the memory handler

Methods inherited from class java.lang.Object

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

Constructor Detail

SlowMemoryHandler

public SlowMemoryHandler()

show memory handler

Method Detail

getCost

public MemoryHandler.Cost getCost()

Description copied from interface: MemoryHandler

The cost level for this MemoryHandler.

Specified by:

getCost in interface MemoryHandler

Returns:

the cost

freeMemory

public long freeMemory(double percentage)

Description copied from interface: MemoryHandler

Free memory at this level and below.
To prevent a possible deadlock this method should not be synchronized. It should call MemoryManager.callFreeMemory which in turn calls queuedFreeMemory()

Specified by:

freeMemory in interface MemoryHandler

Parameters:

percentage - the percentage

Returns:

the amount freed.

tidyUp

public long tidyUp()

Description copied from interface: MemoryHandler

Tidy up the memory handler

Specified by:

tidyUp in interface MemoryHandler

Returns:

the amount freed

remove

public void remove(java.lang.String key)

Parameters:

key - the key to remove

panicFreeMemory

public long panicFreeMemory()

Clear all memory ASAP.

Specified by:

panicFreeMemory in interface MemoryHandler

Returns:

The estimated total number of bytes released.

queuedFreeMemory

public long queuedFreeMemory(double percentage)

Description copied from interface: MemoryHandler

This method should implement the freeing of the method and maybe synchronized.

Specified by:

queuedFreeMemory in interface MemoryHandler

Parameters:

percentage - the percentage

Returns:

the amount freed

getEstimatedSize

@CheckReturnValue
 @Nonnegative
public long getEstimatedSize()

Description copied from interface: MemoryHandler

The estimated size of data held by this memory handler

Specified by:

getEstimatedSize in interface MemoryHandler

Returns:

the estimated size

getLastAccessed

public long getLastAccessed()

Description copied from interface: MemoryHandler

The last time this memory handle was accessed

Specified by:

getLastAccessed in interface MemoryHandler

Returns:

when accessed