com.neeve.util

Enum UtlPool.LockingStrategy

java.lang.Object

java.lang.Enum<UtlPool.LockingStrategy>

com.neeve.util.UtlPool.LockingStrategy

All Implemented Interfaces:

Serializable, Comparable<UtlPool.LockingStrategy>

Enclosing class:

UtlPool<T extends UtlPool.Item<T>>

public static enum UtlPool.LockingStrategy
extends Enum<UtlPool.LockingStrategy>

Enumerates the possible locking strategies for threaded pools.

Enum Constant Summary

Enum Constants

Enum Constant and Description
Lock This strateggy uses a ReentrantLock.
Mutex This strategy uses a synchronized block on a mutex.
Spinning This is a lock free strategy that uses spin locking.

Method Summary

Methods

Modifier and Type	Method and Description
static UtlPool.LockingStrategy	valueOf(String name) Returns the enum constant of this type with the specified name.
static UtlPool.LockingStrategy[]	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

Spinning

public static final UtlPool.LockingStrategy Spinning

This is a lock free strategy that uses spin locking.

This strategy is zero garbage and highly efficient, but may consume more cpu resources. This is the default stategy when the thread cpu affinitization is enabled. (see UtlConstants.THREAD_ENABLECPUAFFINITYMASKS_PROPNAME

Mutex

public static final UtlPool.LockingStrategy Mutex

This strategy uses a synchronized block on a mutex.

This strategy is generaly slower than Spinning or Lock but is zero garbage. This is the default stategy when the thread cpu affinitization is enabled. (see UtlConstants.THREAD_ENABLECPUAFFINITYMASKS_PROPNAME

Lock

public static final UtlPool.LockingStrategy Lock

This strateggy uses a ReentrantLock.

This stategy is more efficient than using Mutex, especially under higher contention, but is not garbage free.

Method Detail

values

public static UtlPool.LockingStrategy[] 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 (UtlPool.LockingStrategy c : UtlPool.LockingStrategy.values())
    System.out.println(c);

Returns:

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

valueOf

public static UtlPool.LockingStrategy valueOf(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:

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

NullPointerException - if the argument is null