| MemoryUsage | java.lang.management |
A MemoryUsage object represents a snapshot of memory
usage for a specified type or pool of memory. Memory usage is
measured as four long values, each of which
represents a number of bytes. getInit(
) returns the initial amount of
memory that the Java VM requests from the operating system.
getUsed( ) returns the actual number of
bytes used. getCommitted( ) returns the number of
bytes that the operating system has committed to the Java VM for this
pool. These bytes may not all be in use, but they are not available
to other processes running on the system. getMax(
) returns the maximum amount of
memory that the Java VM requests for this pool. getMax(
) returns -1 if there is no defined
maximum value. public class MemoryUsage {
// Public Constructors
public MemoryUsage (long init , long used , long committed , long max );
// Public Class Methods
public static MemoryUsage from (javax.management.openmbean.CompositeData cd );
// Public Instance Methods
public long getCommitted ( );
public long getInit ( );
public long getMax ( );
public long getUsed ( );
// Public Methods Overriding Object
public String toString ( );
}
Passed To
MemoryNotificationInfo.MemoryNotificationInfo( ) Returned By
MemoryMXBean.{getHeapMemoryUsage( ),
getNonHeapMemoryUsage( )},
MemoryNotificationInfo.getUsage( ),
MemoryPoolMXBean.{getCollectionUsage( ),
getPeakUsage( ), getUsage( )} |