com.ibm.lang.management

Interface MemoryPoolMXBean

All Superinterfaces:

java.lang.management.MemoryPoolMXBean

public interface MemoryPoolMXBean
extends java.lang.management.MemoryPoolMXBean

The IBM-specific interface for managing and monitoring the virtual machine's memory pools.

Since:

1.5

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.management.MemoryUsage	getPreCollectionUsage() If supported by the virtual machine, returns a MemoryUsagewhich encapsulates this memory pool's memory usage before the most recent run of the garbage collector.

Methods inherited from interface java.lang.management.MemoryPoolMXBean

getCollectionUsage, getCollectionUsageThreshold, getCollectionUsageThresholdCount, getMemoryManagerNames, getName, getPeakUsage, getType, getUsage, getUsageThreshold, getUsageThresholdCount, isCollectionUsageThresholdExceeded, isCollectionUsageThresholdSupported, isUsageThresholdExceeded, isUsageThresholdSupported, isValid, resetPeakUsage, setCollectionUsageThreshold, setUsageThreshold

Method Detail

getPreCollectionUsage

java.lang.management.MemoryUsage getPreCollectionUsage()

If supported by the virtual machine, returns a MemoryUsagewhich encapsulates this memory pool's memory usage before the most recent run of the garbage collector. No garbage collection will be actually occur as a result of this method getting called.

The method will return a null if the virtual machine does not support this type of functionality.

MBeanServer access:

The return value will be mapped to a CompositeData with attributes as specified in MemoryUsage.

Returns:

a MemoryUsage containing the usage details for the memory pool just before the most recent collection occurred.