Package io.deephaven.engine.table.impl.util

Class RuntimeMemory.Sample

java.lang.Object

io.deephaven.engine.table.impl.util.RuntimeMemory.Sample

Enclosing class:

RuntimeMemory

public static class RuntimeMemory.Sample
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
long	freeMemory	What is the last free memory value we retrieved from the Runtime.freeMemory().
long	totalCollections	The total number of GC collections since program start.
long	totalCollectionTimeMs	The approximated total time of GC collections since program start, in milliseconds.
long	totalMemory	What is the last total memory value we retrieved from the Runtime.totalMemory().

Constructor Summary

Constructors

Constructor	Description
Sample()

Method Summary

Modifier and Type	Method	Description
String	toString()
long	usedHeapMemory()	How much heap memory is used according to this sample.

Methods inherited from class java.lang.Object

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

Field Details

freeMemory

public long freeMemory

What is the last free memory value we retrieved from the Runtime.freeMemory().

totalMemory

public long totalMemory

What is the last total memory value we retrieved from the Runtime.totalMemory().

totalCollections

public long totalCollections

The total number of GC collections since program start. The sum of GarbageCollectorMXBean.getCollectionCount().

totalCollectionTimeMs

public long totalCollectionTimeMs

The approximated total time of GC collections since program start, in milliseconds. The sum of the GarbageCollectorMXBean.getCollectionTime().

Constructor Details

Sample

public Sample()

Method Details

usedHeapMemory

public long usedHeapMemory()

How much heap memory is used according to this sample.

Returns:

the total memory minus the free memory

toString

public String toString()

Overrides:

toString in class Object