Package org.apache.sysds.runtime.controlprogram.caching

Enum Class CacheableData.CacheStatus

java.lang.Object

java.lang.Enum<CacheableData.CacheStatus>

org.apache.sysds.runtime.controlprogram.caching.CacheableData.CacheStatus

All Implemented Interfaces:

Serializable, Comparable<CacheableData.CacheStatus>, Constable

Enclosing class:

CacheableData<T extends CacheBlock<?>>

public static enum CacheableData.CacheStatus
extends Enum<CacheableData.CacheStatus>

Defines all possible cache status types for a data blob. An object of class CacheableData can be in one of the following five status types: EMPTY: Either there is no data blob at all, or the data blob resides in a specified import file and has never been downloaded yet. READ: The data blob is in main memory; one or more threads are referencing and reading it (shared "read-only" lock). This status uses a counter. Eviction is NOT allowed. MODIFY: The data blob is in main memory; exactly one thread is referencing and modifying it (exclusive "write" lock). Eviction is NOT allowed. CACHED: The data blob is in main memory, and nobody is using nor referencing it. There is always an persistent recovery object for it

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
CACHED
CACHED_NOWRITE
EMPTY
MODIFY
READ

Method Summary

Modifier and Type	Method	Description
static CacheableData.CacheStatus	valueOf(String name)	Returns the enum constant of this class with the specified name.
static CacheableData.CacheStatus[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

compareTo, describeConstable, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

EMPTY

public static final CacheableData.CacheStatus EMPTY

READ

public static final CacheableData.CacheStatus READ

MODIFY

public static final CacheableData.CacheStatus MODIFY

CACHED

public static final CacheableData.CacheStatus CACHED

CACHED_NOWRITE

public static final CacheableData.CacheStatus CACHED_NOWRITE

Method Details

values

public static CacheableData.CacheStatus[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static CacheableData.CacheStatus valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null