com.bea.jvm
Interface MemorySystem

All Superinterfaces:

Describable, JVMComponent

public interface MemorySystem

extends JVMComponent

Interface to the JVM memory system.

Author:

Calle Wilund

, Marcus Hirt

Method Summary

GarbageCollector	getGarbageCollector() Returns the GarbageCollector currently used by the JVM.
long	getMaxHeapSize() Returns the maximum size the heap may grow to, in bytes.
long	getTotalHeapSize() Returns the size of the heap that the JVM has allocated, in bytes.
long	getUsedHeapSize() Returns the committed heap size of the JVM in bytes.

Methods inherited from interface com.bea.jvm.Describable

getDescription

Method Detail

getMaxHeapSize

public long getMaxHeapSize()
                    throws NotAvailableException

Returns the maximum size the heap may grow to, in bytes. This is normally the same as the size specified with the -mx flag.

Returns:

the maximum heap size of the JVM (-mx) in bytes.

Throws:

NotAvailableException - if this functionality isn't available in this JVM.

getTotalHeapSize

public long getTotalHeapSize()
                      throws NotAvailableException

Returns the size of the heap that the JVM has allocated, in bytes.

Returns:

the allocated heap size of the JVM in bytes.

Throws:

NotAvailableException - if this functionality isn't available in this JVM.

getUsedHeapSize

public long getUsedHeapSize()
                     throws NotAvailableException

Returns the committed heap size of the JVM in bytes.

Returns:

the committed heap size of JVM in bytes.

Throws:

NotAvailableException - if this functionality isn't available in this JVM.

getGarbageCollector

public GarbageCollector getGarbageCollector()
                                     throws NotAvailableException

Returns the GarbageCollector currently used by the JVM.

Returns:

the garbage collector used by the memory system.

Throws:

NotAvailableException - if this functionality isn't available in this JVM.

See Also:

GarbageCollector