pt.ua.concurrent

Enum RWEx.Priority

java.lang.Object

java.lang.Enum<RWEx.Priority>

pt.ua.concurrent.RWEx.Priority

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<RWEx.Priority>

Enclosing class:

RWEx

public static enum RWEx.Priority
extends java.lang.Enum<RWEx.Priority>

Locking priority choices:
WRITER: priority to writers (a waiting writer prevents new readers from getting the lock);
READERS: priority to readers (a waiting reader prevents new writers from getting the lock);
TIME_OF_ARRIVAL: priority ordered by decreasing waiting time (not yet implemented!).

Enum Constant Summary

Enum Constants

Enum Constant and Description
READERS
TIME_OF_ARRIVAL
WRITER

Method Summary

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

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

WRITER

public static final RWEx.Priority WRITER

READERS

public static final RWEx.Priority READERS

TIME_OF_ARRIVAL

public static final RWEx.Priority TIME_OF_ARRIVAL

Method Detail

values

public static RWEx.Priority[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (RWEx.Priority c : RWEx.Priority.values())
    System.out.println(c);

Returns:

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

valueOf

public static RWEx.Priority valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null