Enum Class MemorySeal

java.lang.Object

java.lang.Enum<MemorySeal>

org.newsclub.net.unix.memory.MemorySeal

All Implemented Interfaces:

Serializable, Comparable<MemorySeal>, Constable

public enum MemorySeal
extends Enum<MemorySeal>

Specific "memory seal" operations.

Author:

Christian Kohlschütter

See Also:

• SharedMemory.addSeals(java.util.Set)

Nested Class Summary

Nested classes/interfaces inherited from class Enum

Enum.EnumDesc<E>

Enum Constant Summary

Enum Constants

Enum Constant	Description
PREVENT_FUTURE_WRITE	Prevents writing to the memory area in question, except for shared writable mappings that were created prior to the seal being set.
PREVENT_GROW	Prevents growing the memory area in question.
PREVENT_SEAL	Prevents any further modifications to the set of seals.
PREVENT_SHRINK	Prevents shrinking the memory area in question.
PREVENT_WRITE	Prevents writing to the memory area in question.

Method Summary

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

Methods inherited from class Enum

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

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

PREVENT_SEAL

public static final MemorySeal PREVENT_SEAL

Prevents any further modifications to the set of seals.

PREVENT_SHRINK

public static final MemorySeal PREVENT_SHRINK

Prevents shrinking the memory area in question.

PREVENT_GROW

public static final MemorySeal PREVENT_GROW

Prevents growing the memory area in question.

PREVENT_WRITE

public static final MemorySeal PREVENT_WRITE

Prevents writing to the memory area in question.

PREVENT_FUTURE_WRITE

public static final MemorySeal PREVENT_FUTURE_WRITE

Prevents writing to the memory area in question, except for shared writable mappings that were created prior to the seal being set. This is available on Linux since version 5.1, and on NetBSD since version 11.

Method Details

values

public static MemorySeal[] 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 MemorySeal 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