com.jrockit.memleak.value
Class HeapInfo

java.lang.Object
  com.jrockit.memleak.value.HeapInfo

All Implemented Interfaces:

IHeapInfo

Direct Known Subclasses:

HeapHistogram, JoinedTypeHeapInfo, TypeHeapInfo

public abstract class HeapInfo
extends java.lang.Object
implements IHeapInfo

Represents heap usage for a single type, including growth rate. This only includes memory used by the instances themselves. That is, objects referenced by instance fields are not included, nor are class objects and static fields.

Field Summary

protected float	growthRate
protected int	numInstances
protected long	size

Fields inherited from interface com.jrockit.memleak.IHeapInfo

EMPTY_ARRAY

Constructor Summary

protected	HeapInfo(int numInstances, long size, float growthRate, long creationMillis) Full state constructor.
	HeapInfo(long creationMillis) Minimal constructor for aggregating subclasses.

Method Summary

protected boolean	equals(HeapInfo other)
boolean	equals(java.lang.Object other)
float	getGrowthRate()
int	getNumberOfInstances()
long	getSizeOfInstances()
long	getTime()
abstract int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

numInstances

protected int numInstances

size

protected long size

growthRate

protected float growthRate

Constructor Detail

HeapInfo

protected HeapInfo(int numInstances,
                   long size,
                   float growthRate,
                   long creationMillis)

Full state constructor.

Parameters:

numInstances - the total number of instances of this type

size - the total amount of heap memory used by all instances of this type, in bytes

growthRate - the rate at which heap usage of this type increases, in bytes per second

creationMillis - timestamp for when this IHeapInfo was calculated

HeapInfo

public HeapInfo(long creationMillis)

Minimal constructor for aggregating subclasses.

Parameters:

creationMillis - timestamp for when this IHeapInfo was calculated

Method Detail

getGrowthRate

public float getGrowthRate()

Specified by:

getGrowthRate in interface IHeapInfo

Returns:

the growth rate in bytes per second.

getNumberOfInstances

public int getNumberOfInstances()

Specified by:

getNumberOfInstances in interface IHeapInfo

Returns:

the number of live instances that this IHeapInfo represents.

getSizeOfInstances

public long getSizeOfInstances()

Specified by:

getSizeOfInstances in interface IHeapInfo

Returns:

the total size in bytes that this IHeapInfo represents.

getTime

public long getTime()

Specified by:

getTime in interface IHeapInfo

Returns:

the timestamp in milliseconds for when this IHeapInfo was created.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public abstract int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

equals

protected boolean equals(HeapInfo other)

Parameters:

other - an HeapInfo

Returns:

true iff other represent a HeapInfo with the same growth rate, number of instances and size of instances.

See Also:

Object.equals(Object)