Package org.apache.ignite.internal.util

Class GridStripedLock

java.lang.Object

org.apache.ignite.internal.util.GridStripedLock

public class GridStripedLock
extends Object

This is an utility class for 'splitting' locking of some int- or long-keyed resources. Map int and long values to some number of locks, and supply convenience methods to obtain and release these locks using key values.

Constructor Summary

Constructors

Constructor	Description
GridStripedLock(int concurrencyLevel)	Creates new instance with the given concurrency level (number of locks).

Method Summary

Modifier and Type	Method	Description
int	concurrencyLevel()	Gets concurrency level.
Lock	getLock(int key)	Returns Lock object for the given key.
Lock	getLock(long key)	Returns Lock object for the given key.
Lock	getLock(@Nullable Object o)	Returns lock for object.
void	lock(int key)	Locks given key.
void	lock(long key)	Locks given key.
void	lock(@Nullable Object o)	Locks an object.
String	toString()
void	unlock(int key)	Unlocks given key.
void	unlock(long key)	Unlocks given key.
void	unlock(@Nullable Object o)	Unlocks an object.

Methods inherited from class java.lang.Object

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

Constructor Detail

GridStripedLock

public GridStripedLock(int concurrencyLevel)

Creates new instance with the given concurrency level (number of locks).

Parameters:

concurrencyLevel - Concurrency level.

Method Detail

concurrencyLevel

public int concurrencyLevel()

Gets concurrency level.

Returns:

Concurrency level.

getLock

public Lock getLock(int key)

Returns Lock object for the given key.

Parameters:

key - Key.

Returns:

Lock.

getLock

public Lock getLock(long key)

Returns Lock object for the given key.

Parameters:

key - Key.

Returns:

Lock.

getLock

public Lock getLock(@Nullable
                    @Nullable Object o)

Returns lock for object.

Parameters:

o - Object.

Returns:

Lock.

lock

public void lock(int key)

Locks given key.

Parameters:

key - Key.

unlock

public void unlock(int key)

Unlocks given key.

Parameters:

key - Key.

lock

public void lock(long key)

Locks given key.

Parameters:

key - Key.

unlock

public void unlock(long key)

Unlocks given key.

Parameters:

key - Key.

lock

public void lock(@Nullable
                 @Nullable Object o)

Locks an object.

Parameters:

o - Object.

unlock

public void unlock(@Nullable
                   @Nullable Object o)

Unlocks an object.

Parameters:

o - Object.

toString

public String toString()

Overrides:

toString in class Object