Interface GarbageCollectorMXBean

All Superinterfaces:

GarbageCollectorMXBean, GarbageCollectorMXBean, MemoryManagerMXBean, PlatformManagedObject

All Known Implementing Classes:

ExtendedGarbageCollectorMXBeanImpl

public interface GarbageCollectorMXBean
extends GarbageCollectorMXBean

The OpenJ9 extension interface for managing and monitoring the virtual machine's garbage collection functionality.

Since:

1.5

Method Summary

Modifier and Type	Method	Description
long	getLastCollectionEndTime()	Returns the end time in milliseconds of the last garbage collection that was carried out by this collector.
long	getLastCollectionStartTime()	Returns the start time in milliseconds of the last garbage collection that was carried out by this collector.
long	getMemoryUsed()	Returns the amount of heap memory used by objects that are managed by the collector corresponding to this bean object.
long	getTotalCompacts()	Returns the cumulative total number of compacts that was performed by garbage collector corresponding to this bean object.
long	getTotalMemoryFreed()	Returns the cumulative total amount of memory freed, in bytes, by the garbage collector corresponding to this bean object.

Methods declared in interface com.sun.management.GarbageCollectorMXBean

getLastGcInfo

Methods declared in interface java.lang.management.GarbageCollectorMXBean

getCollectionCount, getCollectionTime

Methods declared in interface java.lang.management.MemoryManagerMXBean

getMemoryPoolNames, getName, isValid

Methods declared in interface java.lang.management.PlatformManagedObject

getObjectName

Method Details

getLastCollectionStartTime

long getLastCollectionStartTime()

Returns the start time in milliseconds of the last garbage collection that was carried out by this collector.

Returns:

the start time of the most recent collection

getLastCollectionEndTime

long getLastCollectionEndTime()

Returns the end time in milliseconds of the last garbage collection that was carried out by this collector.

Returns:

the end time of the most recent collection

getMemoryUsed

long getMemoryUsed()

Returns the amount of heap memory used by objects that are managed by the collector corresponding to this bean object.

Returns:

memory used in bytes

getTotalMemoryFreed

long getTotalMemoryFreed()

Returns the cumulative total amount of memory freed, in bytes, by the garbage collector corresponding to this bean object.

Returns:

memory freed in bytes

getTotalCompacts

long getTotalCompacts()

Returns the cumulative total number of compacts that was performed by garbage collector corresponding to this bean object.

Returns:

number of compacts performed