Class AixGlobalMemory

java.lang.Object

oshi.hardware.common.AbstractGlobalMemory

oshi.hardware.common.platform.unix.aix.AixGlobalMemory

All Implemented Interfaces:

GlobalMemory

@ThreadSafe
public abstract class AixGlobalMemory
extends AbstractGlobalMemory

Abstract base for AIX GlobalMemory. The public AbstractGlobalMemory API translates perfstat_memory_total_t fields into bytes; getPhysicalMemory() parses the shared lscfg supplier passed in from the HAL. Subclasses provide the perfstat field accessors and the matching AixVirtualMemory.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Supplier<List<String>>	lscfg	Memoized hardware listing supplier from the owning HAL.
protected static final long	PAGESIZE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AixGlobalMemory(Supplier<List<String>> lscfg)

Method Summary

Modifier and Type	Method	Description
long	getAvailable()	The amount of physical memory currently available, in bytes.
long	getPageSize()	The number of bytes in a memory page
List<PhysicalMemory>	getPhysicalMemory()	Physical memory, such as banks of memory.
long	getTotal()	The amount of actual physical memory, in bytes.
abstract VirtualMemory	getVirtualMemory()	Constructs the matching AixVirtualMemory (JNA or FFM) for this instance.
protected abstract long	queryRealAvail()	Reads perfstat_memory_total_t.real_avail (4 KB pages) via the subclass.
protected abstract long	queryRealTotal()	Reads perfstat_memory_total_t.real_total (4 KB pages) via the subclass.

Methods inherited from class AbstractGlobalMemory

toString

Modifier and Type	Method	Description
String	toString()

Methods inherited from class Object

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

Field Details

PAGESIZE

protected static final long PAGESIZE

See Also:

• Constant Field Values

lscfg

protected final Supplier<List<String>> lscfg

Memoized hardware listing supplier from the owning HAL.

Constructor Details

AixGlobalMemory

protected AixGlobalMemory(Supplier<List<String>> lscfg)

Method Details

getAvailable

public long getAvailable()

Description copied from interface: GlobalMemory

The amount of physical memory currently available, in bytes.

Returns:

Available number of bytes.

getTotal

public long getTotal()

Description copied from interface: GlobalMemory

The amount of actual physical memory, in bytes.

Returns:

Total number of bytes.

getPageSize

public long getPageSize()

Description copied from interface: GlobalMemory

The number of bytes in a memory page

Returns:

Page size in bytes.

getPhysicalMemory

public List<PhysicalMemory> getPhysicalMemory()

Description copied from interface: GlobalMemory

Physical memory, such as banks of memory.

On Linux, requires elevated permissions. On FreeBSD and Solaris, requires installation of dmidecode.

Specified by:

getPhysicalMemory in interface GlobalMemory

Overrides:

getPhysicalMemory in class AbstractGlobalMemory

Returns:

A list of PhysicalMemory objects.

queryRealAvail

protected abstract long queryRealAvail()

Reads perfstat_memory_total_t.real_avail (4 KB pages) via the subclass.

Returns:

real_avail in pages

queryRealTotal

protected abstract long queryRealTotal()

Reads perfstat_memory_total_t.real_total (4 KB pages) via the subclass.

Returns:

real_total in pages

getVirtualMemory

public abstract VirtualMemory getVirtualMemory()

Constructs the matching AixVirtualMemory (JNA or FFM) for this instance.

Returns:

the VirtualMemory paired with this GlobalMemory implementation