jeco.dmm.sim2.lib.allocator
Class Allocator

java.lang.Object
  jeco.dmm.sim2.lib.allocator.Allocator

Direct Known Subclasses:

SegregatedFreeList

public abstract class Allocator
extends java.lang.Object

Author:

jlrisco

Field Summary

protected boolean	allowCoalescing
protected boolean	allowSplitting
protected java.util.ArrayList<FreeList>	freeLists
protected long	maxSizeInB Max memory block size managed by this allocator (sizeInB <= maxSizeInB).
protected Metrics	metrics
protected long	minSizeInB Min memory block size managed by this allocator (minSizeInB < sizeInB).

Constructor Summary

Allocator(long minSizeInB, long maxSizeInB, boolean allowSplitting, boolean allowCoalescing)

Method Summary

void	add(FreeList freeList)
boolean	canManage(long sizeInB)
java.util.ArrayList<FreeList>	getFreeLists()
long	getMaxSizeInB()
long	getMinSizeInB()
boolean	isAllowCoalescing()
boolean	isAllowSplitting()
abstract Block	malloc(long sizeInB, Block hottest) Typical malloc allocation.
void	setMaxSizeInB(long maxSizeInB)
void	setMetrics(Metrics metrics)
void	setMinSizeInB(long minSizeInB)
abstract void	setup(FreeList.DATA_STRUCTURE dataStructure, FreeList.ALLOCATION_MECHANISM allocationMechanism, FreeList.ALLOCATION_POLICY allocationPolicy)

Methods inherited from class java.lang.Object

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

Field Detail

metrics

protected Metrics metrics

minSizeInB

protected long minSizeInB

Min memory block size managed by this allocator (minSizeInB < sizeInB).

maxSizeInB

protected long maxSizeInB

Max memory block size managed by this allocator (sizeInB <= maxSizeInB).

freeLists

protected java.util.ArrayList<FreeList> freeLists

allowSplitting

protected boolean allowSplitting

allowCoalescing

protected boolean allowCoalescing

Constructor Detail

Allocator

public Allocator(long minSizeInB,
                 long maxSizeInB,
                 boolean allowSplitting,
                 boolean allowCoalescing)

Method Detail

setMetrics

public void setMetrics(Metrics metrics)

getMinSizeInB

public long getMinSizeInB()

setMinSizeInB

public void setMinSizeInB(long minSizeInB)

getMaxSizeInB

public long getMaxSizeInB()

setMaxSizeInB

public void setMaxSizeInB(long maxSizeInB)

getFreeLists

public java.util.ArrayList<FreeList> getFreeLists()

isAllowSplitting

public boolean isAllowSplitting()

isAllowCoalescing

public boolean isAllowCoalescing()

add

public void add(FreeList freeList)

canManage

public boolean canManage(long sizeInB)

setup

public abstract void setup(FreeList.DATA_STRUCTURE dataStructure,
                           FreeList.ALLOCATION_MECHANISM allocationMechanism,
                           FreeList.ALLOCATION_POLICY allocationPolicy)

malloc

public abstract Block malloc(long sizeInB,
                             Block hottest)

Typical malloc allocation.

Parameters:

sizeInB - sizeInB Size in bytes

hottest - For reliability purposes, the hottest block

Returns:

The block created