org.glassfish.virtualization.spi
Interface VirtualMachineInfo

All Superinterfaces:

StaticVirtualMachineInfo

public interface VirtualMachineInfo
extends StaticVirtualMachineInfo

Returns the virtual machine information

Author:

Jerome Dochez

Method Summary

long	cpuTime() Returns the CPU used by this virtual machine
Machine.State	getState() Returns the machine's state
long	maxMemory() Returns the maximum memory allocated to this virtual machine.
long	memory() Returns the current memory used by this virtual machine
void	registerMemoryListener(MemoryListener ml, long delay, TimeUnit unit) Registers a memory changes listener
void	unregisterMemoryListener(MemoryListener ml) Un-registers a memory changes listener

Methods inherited from interface org.glassfish.virtualization.spi.StaticVirtualMachineInfo

nbVirtCpu

Method Detail

maxMemory

long maxMemory()
               throws VirtException

Returns the maximum memory allocated to this virtual machine.

Returns:

the virtual machine maximum memory.

Throws:

VirtException

memory

long memory()
            throws VirtException

Returns the current memory used by this virtual machine

Specified by:

memory in interface StaticVirtualMachineInfo

Returns:

the virtual machine current memory usage

Throws:

VirtException

cpuTime

long cpuTime()
             throws VirtException

Returns the CPU used by this virtual machine

Returns:

the CPU time used by this VM.

Throws:

VirtException

getState

Machine.State getState()
                       throws VirtException

Returns the machine's state

Returns:

the machine's state

Throws:

VirtException - if the machine's state cannot be obtained

registerMemoryListener

void registerMemoryListener(MemoryListener ml,
                            long delay,
                            TimeUnit unit)

Registers a memory changes listener

Parameters:

ml - the memory listener instance

delay - notification interval for memory changes polling.

unit - the time unit to express delay

unregisterMemoryListener

void unregisterMemoryListener(MemoryListener ml)

Un-registers a memory changes listener

Parameters:

ml, - the listener to un-register.